JP2005210668A - Radio terminal apparatus, radio communication system, radio network, radio resource management apparatus, radio resource management system, and radio resource management method - Google Patents

Abstract

An existing terminal and a terminal having a C / U separation function can be accommodated, and resource allocation or the like can be processed independently of a control signal and user data.
A terminal 121 makes a resource allocation request including a C / U separation indicator. The resource management apparatus 201 determines that the terminal 121 has a C / U separation function based on the C / U separation indicator, and the resource centralized management apparatus allocates resources of base stations of suitable radio access schemes. Thereafter, the control signal communicates with the base station 101 of the radio access scheme a, and the user data communicates with the newly assigned base station 102 of the radio access scheme b.
[Selection] Figure 1

Description

  The present invention provides a wireless terminal device, a wireless communication system, a wireless communication device capable of connecting a control signal and user data by different wireless access, and appropriately allocating resources at the time of movement, handover, and arrival at the terminal. The present invention relates to a network, a radio resource management device, a radio resource management system, and a radio resource management method.

  In a conventional single mode (for example, W-CDMA) or dual mode terminal (for example, GSM or W-CDMA), the control signal (C: Control Data) and the user data (U: User Data) are the same. You are using a wireless access method. Therefore, it is assumed that the same radio access method is used for control signals and user data for resource allocation and handover on the network side.

  Services provided by telecommunications carriers are increasingly demanding service quality different from conventional voice call services such as movie distribution. In order to provide new services one after another while maintaining conventional service provision, providing all services by one wireless access method as in the past is approaching the limit due to limitations on transmission speed and the like. Therefore, in order to provide services to users in an optimal environment, a terminal that can support a plurality of wireless access methods (W-CDMA, WLAN, Bluetooth, etc.) and a network that allocates an optimal wireless access method for each service are required. It becomes.

  Note that, in a universal mobile telephone system (UMTS) network, a technique of assigning radio access schemes suitable for terminal control signals and user data has been disclosed (for example, see Patent Document 1 below).

Japanese translation of PCT publication No. 2002-511672

  However, the technique disclosed in Patent Document 1 treats all terminals accommodated by the network as terminals having a C / U separation function, and does not assume that terminals having different capabilities are accommodated. Currently, the network accommodates terminals having various capabilities, and includes a single-mode terminal that does not have a conventional C / U separation function and a multi-mode terminal that does not have a C / U separation function. In addition to this, a terminal having a C / U separation function expected to increase in the future must be accommodated.

  Therefore, it is necessary to consider how the network accommodates terminals having different capacities and how to handle a conventional single-type radio access system resource management device. For example, when the network tries to process all these terminals by the technique described in Patent Document 1, the processing for the conventional terminal having no C / U separation function becomes complicated, and the processing time is increased. It is expected to increase. At the same time, since the resource management apparatus on the conventional network side depends on the radio access scheme, only a single or dual (for example, GSM or W-CDMA) radio access scheme can be supported. As a result, it is impossible to allocate resources according to the resource usage status of other wireless access methods and user data, and it is impossible to deal with terminals having a C / U separation function.

  In order to replace the resource management device arranged on the network side so as to support all wireless access methods, it is necessary to make a significant function change or add an interface, which is not practical. In the future, these control signals and user data will be suitable for C / U separation for terminals with C / U separation function while distinguishing them from conventional terminals on the network side for terminals having C / U separation function. There is a demand for providing a system that can smoothly allocate resources, perform handovers, and receive incoming calls to terminals.

  By the way, when a terminal communicates with a control signal and user data independently using different radio access methods, the terminal belongs to different location registration areas for the control signal and user data. become. In this case, there arises a problem that the conventional UMTS location registration and paging method cannot be used.

  Furthermore, as a mobile communication infrastructure, it is expected that a mobile communication provider that owns only a user data transmission base station and provides a service will be realized in the near future. It is assumed that base stations for user data transmission use wireless access methods with high transmission rates, but these wireless access methods have a narrow coverage area, exist as hot spots, and have a continuous radio wave coverage area. No. When such a radio access scheme is used for a control signal, the terminal frequently goes out of service or a handover occurs. Therefore, such a radio access scheme is not suitable for use of a control signal. Also, since the base station for user data transmission handles control signals, it is difficult to reduce the size and cost of the base station itself. If these base stations can handle only user data, it is not necessary to process terminal control signals, and the base stations can be reduced in cost and spread. Therefore, the base station for user data transmission must consider how to avoid handling control signals.

  In order to solve the above-described problems caused by the prior art, the present invention can accommodate a terminal having a new C / U separation function in addition to an existing terminal having no C / U separation function. To provide a radio terminal device, a radio communication system, a radio network, a radio resource management device, a radio resource management system, and a radio resource management method capable of processing resource allocation independently of user data, handover and incoming to a terminal With the goal. Further, according to the present invention, when the network side grasps the C / U separation capability of the terminal and the control signal of the terminal having the C / U separation capability is selected, the location registration, and the paging, the base station dedicated to the user data It is an object of the present invention to provide a wireless terminal device, a wireless communication system, a wireless network, a wireless resource management device, a wireless resource management system, and a wireless resource management method that can eliminate the need to handle the communication.

  In order to solve the above-described problems and achieve the object, the wireless terminal device of the present invention has a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods. Storage means for storing information having the C / U separation function, and control means for controlling transmission of the information having the C / U separation function stored in the storage means to the network, It is characterized by providing.

  According to the wireless terminal device of the present invention, the presence / absence of the C / U separation function can be transmitted to the network for each wireless terminal device, and the network includes the wireless terminal device having the C / U separation function and the C / U. A wireless terminal device having no separation function can be easily determined, and a wireless terminal device having the same control signal and user data and a wireless terminal device having a C / U separation function are the same. It can be accommodated in the network.

  The wireless communication system according to the present invention has a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods, and belongs to control signal communication. Paging the location registration area of a control signal to which the wireless terminal belongs when receiving an incoming call to the wireless terminal, and a wireless terminal comprising location registration request means for requesting registration of the location registration area on the network side, and the user data Management means for selecting and notifying the wireless terminal of a wireless access method used for the communication based on a paging response transmitted from the wireless terminal and QoS information of the incoming call.

  According to the wireless communication system of the present invention, when an incoming call is received at the terminal, the wireless access method used for user data communication is selected based on the paging response transmitted from the wireless terminal and the QoS information of the incoming call. Will be able to.

  In addition, the wireless network according to the present invention receives information on the C / U separation function capable of communicating the control signal (C) and the user data (U) using different wireless access methods from the accommodated wireless terminal device. And a management means for selecting an optimum wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device based on the information of the C / U separation function. Features.

  According to the wireless network of the present invention, the wireless network is a wireless access method capable of communicating the user data with the wireless terminal device based on information on the C / U separation function received from the wireless terminal device. Because the most suitable wireless access method can be selected, control signals and user data can be communicated using different wireless access methods, and communication using a wireless access method having a transmission rate suitable for user data communication can be performed. .

  A radio resource management apparatus according to the present invention is a radio resource management apparatus that manages allocation of resources to accommodated radio terminal apparatuses using a plurality of radio access methods. From the radio terminal apparatus, a control signal (C) And a determination means for determining a C / U separation function of the wireless terminal device when receiving information on a C / U separation function capable of communicating with user data (U) using a different wireless access method, and the determination A wireless access method for selecting an optimum wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device when it is determined by the means that the wireless terminal device has a C / U separation function Corresponding to the wireless access method selected by the selecting means and the wireless access method selecting means, the wireless terminal device A resource reservation means for securing the resources of the base station for communication between, characterized in that it comprises a.

  According to the radio resource management apparatus of the present invention, it is possible to allocate base station resources optimal for communication with the radio terminal apparatus based on the information on the C / U separation function transmitted from the radio terminal apparatus, and The wireless access method can be selected, and wireless communication using the optimal wireless access method can always be performed with the wireless terminal device.

  The radio resource management system according to the present invention has a C / U separation function capable of communicating a control signal (C) and user data (U) using different radio access methods, and the C / U separation function. Connected to the plurality of base stations, a plurality of base stations that perform wireless communication using a control signal or user data between the wireless terminal device capable of transmitting the information to the network and the wireless terminal device, When receiving information on a C / U separation function capable of communicating a control signal transmitted by the wireless terminal device and user data using different wireless access methods, the wireless terminal is based on the information on the C / U separation function. A resource that selects an optimum wireless access method among the wireless access methods capable of communicating the user data with a device and a base station of the wireless access method Characterized in that it comprises a management device.

  According to the radio resource management system of the present invention, the resources of the base station based on the radio access scheme that is most suitable for communication with the radio terminal device among the plurality of base stations, based on the information on the C / U separation function transmitted from the radio terminal device. Wireless communication using a wireless access method that is optimal for user data communication, and control signals and user data can be connected via different base stations using different wireless access methods in the cells of multiple base stations. Can be done.

  The radio resource management method according to the present invention also provides information on a C / U separation function capable of communicating a control signal (C) and user data (U) from a radio terminal device to a network using different radio access methods. C / U separation function information transmission step to be transmitted, a signal transmission / reception step for performing wireless communication with the control signal or user data between the wireless terminal device and the network, and a request transmitted from the wireless terminal device Alternatively, the network that has received the information on the C / U separation function capable of communicating the control signal and the user data using a different wireless access method as a response is based on the information on the C / U separation function. A resource for selecting an optimal wireless access method among wireless access methods capable of communicating the user data with Characterized by comprising a management step.

  According to the radio resource management method of the present invention, it is possible to select an optimal radio access method for a radio terminal apparatus based on the information on the C / U separation function transmitted from the radio terminal apparatus, and to make radio access between control signals and user data different. It is possible to establish a communication connection by a method, and to perform wireless communication using a wireless access method that is optimal for user data communication.

  According to the present invention, it is possible to perform resource allocation and handover independently for a control signal and user data using a terminal having a C / U separation function that can communicate using a plurality of radio access methods simultaneously. The wireless access method most suitable for the control signal and user data can be used. As a result, on the wireless resource provider side, resources can be used effectively, while on the wireless terminal device user side, user data can be transmitted at high speed using a terminal having a C / U separation function in addition to existing terminals. It is possible to improve the convenience of the service.

  In addition, communication between a terminal having a C / U separation function and a base station that handles only user data can be performed, and a communication operator on the side of the network can use an access method suitable for only user data at a low cost. There is an effect that it can be realized in the base station.

  Exemplary embodiments of a radio terminal device, a radio communication system, a radio network, a radio resource management device, a radio resource management system, and a radio resource management method according to the present invention will be explained below in detail with reference to the accompanying drawings. .

(Embodiment 1)
First, a first embodiment of the present invention will be described. Embodiment 1 uses a terminal capable of separating control signals and user data, and this terminal can access a control signal and user data to a base station of a different radio access scheme, The present invention relates to a communication system, a radio network, a radio resource management device, a radio resource management system, and a radio resource management method.

(System configuration for wireless access management)
FIG. 1 is a schematic diagram showing a radio access management system according to Embodiment 1 of the present invention. An area based on a plurality of radio access schemes (hereinafter referred to as access schemes) is provided around a plurality of base stations. The cell 111 of the base station 101 based on the access method a (for example, W-CDMA) has a wide area range. In this wide cell 111, base stations 102 and 103 based on different access methods b and c (for example, W-LAN and Bluetooth) are provided, and each cell 112 and 113 has a narrow area range. In addition, the cell 114 of the base station 104 based on the access method d (for example, GSM) has a wide area range and partially overlaps the cell 111. Thus, the cells 111 and 114 of the access methods a and d have a wide area range and are suitable for transmission of control signals. The cells 112 and 113 of the access schemes b and c have a high transmission rate (transmission speed) and are suitable for user data transmission.

  Here, the wireless terminal A (121), which is a mobile phone of a mobile phone or the like, can communicate using the access methods a, b, and c. Hereinafter, the wireless terminal is referred to as a terminal. The terminal 121 has a C / U separation function for separating a control signal (control data) C and user data U. The terminal B (122) can communicate with the access method a. This terminal 122 can communicate in the conventional single mode (W-CDMA) and does not have a C / U separation function. The terminal C (123) can communicate with the access methods a and d. The terminal 123 can perform communication in the conventional dual mode (W-CDMA / GSM) and does not have a C / U separation function.

(System configuration on the network side)
FIG. 2 is a block diagram showing a network-side system in the wireless access management system according to the first embodiment. In FIG. 2, for the sake of convenience, only the configuration on the network (network) side corresponding to the three access methods a, b, and c among the access methods a to d described above is shown. On the network side, resource management apparatuses 201, 202, and 203 depending on the respective access methods a, b, and c are provided. These resource management devices 201, 202, and 203 manage resources related to wireless data communication with the terminals 121, 122, and 123 via the connected base stations 101, 102, and 103, respectively. The devices 201, 202 and 203 do not have a direct interface with each other. For this reason, it is impossible to know the resource usage status of cells of other access methods and to allocate resources.

  These resource management devices 201, 202, and 203 are connected to the resource centralized management device 210. The resource centralized management apparatus 210 collects and manages the resource usage status from each of the subordinate resource management apparatuses 201, 202, and 203. The resource centralized management apparatus 210 is not limited to a single unit as shown in the figure, and one resource centralized management apparatus 210 may be provided for each of a plurality of access method units or a predetermined number of resource management apparatuses. In this case, the plurality of resource centralized management devices 210 distribute and centrally manage resources. Moreover, the function of the resource centralized management apparatus 210 can be provided in one resource management apparatus 201 among the existing resource management apparatuses 201, 202, and 203 provided in a plurality. Although not shown, a location registration management device that manages the locations of the terminals 121, 122, and 123 and an IP router for transmitting and receiving user data to and from the terminals 121, 122, and 123 are provided on the network side. It has been. The IP router is connected to each base station 101, 102, 103.

  FIG. 3 is a block diagram illustrating an internal configuration of the resource management apparatus. FIG. 3 shows the resource management apparatus 201 that depends on the existing access method a described in FIG. The resource management apparatus 201 has an interface 301 with the corresponding base station 101 and an interface 302 with the resource central management apparatus 210. These interfaces 301 and 302 are connected to a signal analysis unit 304 via a transmission / reception unit 303. The resource allocation unit 305 receives a resource allocation request from the terminal or the resource central management apparatus 210 from the signal analysis unit 304, collates the resource usage status in the resource usage status storage unit 306, and performs resource allocation. Then, the resource usage status in the resource usage status storage unit 306 is updated.

  The resource usage status storage unit 306 updates the resource usage status of the resource centralized management apparatus 210 via the signal analysis unit 304 and the transmission / reception unit 303 at regular time intervals or when there is a change greater than a preset threshold value. . The resource utilization status can be obtained from the channel ratio, the connection during a call, and the like. Although FIG. 3 shows the configuration of the resource management device 201 depending on the access method a, the resource management devices 202 and 203 depending on the access methods b and c have the same configuration.

  FIG. 4 is a block diagram showing an internal configuration of the resource central management apparatus. The resource centralized management apparatus 210 has interfaces 401, 402, and 403 with the resource management apparatuses 201, 202, and 203 shown in FIGS. These interfaces 401, 402, and 403 are connected to a signal analysis unit 405 via a transmission / reception unit 404. Connected to the signal analysis unit 405 are a resource allocation unit 406 corresponding to each of the radio systems a, b, and c and a resource usage status storage unit 407 that stores the resource usage status of each of the access methods a, b, and c. Yes. The signal analysis unit 405 receives the updated resource usage status from each resource management apparatus 201, 202, 203 via the interfaces 401, 402, 403 and the transmission / reception unit 404 with the base station 101.

  Then, the signal analysis unit 405 updates and stores the new resource usage status according to the access methods a, b, and c received from the resource management devices 201, 202, and 203 in the resource usage status storage unit 407. The resource allocation unit 406 determines a resource to be newly allocated for each of the access methods a, b, and c in response to the resource usage status of each of the access methods a, b, and c. The determined resource is transmitted to the resource management apparatuses 201, 202, and 203 of the corresponding access methods a, b, and c via the transmission / reception unit 404 and the interfaces 401, 402, and 403. The resource newly allocated in the resource management apparatus 201 (202, 203) shown in FIG. 3 and the resource newly allocated by the resource centralized management apparatus 210 are either a method in which new allocation is sequentially used. Each method such as a method of giving priority to one, a method of switching for each period, time, or time zone can be adopted.

(Terminal configuration)
FIG. 5 is a block diagram showing an internal configuration of a terminal having a C / U separation function. The internal structure of the terminal A (121) having the C / U separation function shown in FIG. 1 is shown. As described above, the terminal 121 is capable of communication using the access methods a, b, and c, and has a C / U separation function for separating the control signal C and the user data U. Three antennas 501, 502, and 503 are provided corresponding to the three access methods a, b, and c. These antennas 501, 502, and 503 are connected to the transmission / reception unit 504, and receive and transmit radio signals corresponding to the respective access methods a, b, and c. As will be described later, the signal analysis unit 505 performs processing in each of the transmission of the terminal 121, the handover due to the movement of the terminal 121, and the incoming call to the terminal 121.

  The signal analysis unit 505 is connected to a reception level monitoring unit 506 that monitors the reception level of a radio signal and a user data resource request unit 507 that makes a resource allocation request to the network side. The reception level monitoring unit 506 monitors the reception level at regular intervals using a timer and outputs it to the signal analysis unit 505. The user data resource request unit 507 is connected to a C / U separation indicator storage unit 509 that stores a C / U separation indicator described later. In addition, the existing terminals 122 and 123 that do not have the C / U separation function are configured without the C / U separation indicator storage unit 509 described above.

(Procedure when user data resource is requested by terminal)
Next, a procedure from when the terminal 121 having the C / U separation function transmits a user data resource allocation request to when user data communication is established will be described. FIG. 6 is a sequence diagram showing a procedure when a user data resource is requested by a terminal. The terminal 121 is located in the cell 112 shown in FIG. 1, and from the state where the control signal is communicated by the access method a, the network side allocates user data resources and starts communication of the user data. It is said.

  The terminal 121 notifies the resource allocation request S601. The resource allocation request S601 includes information on C / U separation indicators, radio wave measurement reports, and requested services. This resource allocation request S601 is output to the resource management apparatus 201 via the access method a base station 101. The resource management apparatus 201 determines that the terminal 121 is a terminal having a C / U separation function based on the content of the resource allocation request S601 (S602). Then, the resource management apparatus 201 notifies the resource central management apparatus 210 of a resource allocation request S603.

  Based on this resource allocation request S603, the resource centralized management apparatus 210 selects the base station 102 of the access method b (S604). Then, the resource centralized management apparatus 210 makes a resource reservation request S605 to the resource management apparatus 202 of the access method b, and the resource management apparatus 202 notifies a resource reservation response S606 in response. Thereafter, the resource centralized management apparatus 210 notifies the resource management apparatus 201 of the access method a and the base station 101 of the access method a of resource allocation notification S607. The resource allocation notification S607 includes information such as the access method b, the cell 112, and the channel. This resource allocation notification S607 is notified from the base station 101 to the terminal 121.

  Upon receiving the resource allocation notification S607, the terminal 121 performs channel setting for user data (S608). Thereby, the terminal 121 starts communication of user data with the IP router 600 via the base station 102 of the access method b (S609). At the same time as or after the start of communication of user data, the terminal 121 responds to the resource management apparatus 201 via the base station 101 with a resource allocation response S610 corresponding to the resource allocation notification S607.

  FIG. 7 is a chart showing the message contents of the resource allocation request. Each information of the resource allocation request S601 described with reference to FIG. 6 is listed. As illustrated, the resource allocation request S601 is composed of a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), requested service information, and measurement information (Measurement Information Elements) are essential information elements. The requested service information includes QoS-related information such as user data to be transmitted (call service information, traffic class to which it belongs, bit rate request, delay request). The measurement information is a reception level result report (radio wave measurement report) of a receivable wireless access method. The resource allocation request S601 is provided with a C / U separation indicator as an option. This IE of the C / U separation indicator can be used in a terminal (terminal 121) having a C / U separation function. For example, if the value is 1, it indicates that the C / U separation function is provided, and is stored in the C / U separation indicator storage unit 509 (see FIG. 5).

  FIG. 8 is a flowchart showing the processing procedure of the terminal at the time of user data resource allocation request. The process of the terminal 121 shown in FIG. 6 is shown. The user data resource request unit 507 (see FIG. 5) of the terminal 121 selects a user data call request service and reads a C / U separation indicator from the C / U separation indicator storage unit 509. These requested services and the C / U separation indicator are entered into a user data call resource allocation request S601 (see FIG. 6) (step S801).

  Next, the signal analysis unit 505 acquires the reception level measurement status (radio wave measurement report) monitored by the reception level monitoring unit 506, instructs the transmission / reception unit 504 to transmit it together with the resource allocation request S601, and performs control. The signal is transmitted to the base station of the cell in which the signal is established (base station 101 in the example of the procedure in FIG. 6) (step S802).

  Next, the signal analysis unit 505 waits for the resource allocation notification S607 (see FIG. 6) (step S803: No loop), and when notified (step S803: Yes), the signal analysis unit 505 transmits the reception / reception unit. The user data reception setting is made for 504 (step S804). This user data is transmitted / received via a base station (base station 101 in the example of the procedure of FIG. 6) for which channel setting (S608 of FIG. 6) has been performed. As a result, the transmission / reception unit 504 becomes ready to receive user data, and the signal analysis unit 505 transmits the resource allocation response S610 (see FIG. 6) to the base station (FIG. 6) of the cell in which the control signal is established. In the example of the procedure, the data is transmitted to the base station 101) (step S805). As a result, the terminal 121 can communicate the user data S609 (see FIG. 6) (step S806), and the process ends.

  FIG. 9 is a flowchart showing a processing procedure of the resource management device when a resource allocation request for user data is made by the terminal. The process of the resource management apparatus 201 shown in FIG. 6 is shown. When the resource management apparatus 201 receives the resource allocation request S601 of the terminal 121 (step S901), the signal analysis unit 304 (see FIG. 3) determines whether there is a C / U separation indicator in the message of the resource allocation request S601. (Step S902). If there is a C / U separation indicator (step S902: Yes), the signal analysis unit 304 transmits the resource allocation request S601 of the terminal 121 to the resource centralized management apparatus 210 via the transmission / reception unit 303 (step S903). Then, it waits for a resource allocation notification S607 (see FIG. 6) from the resource central management apparatus 210 (step S904: No loop).

  When the resource allocation notification S607 is received from the resource centralized management apparatus 210 (step S904: Yes), the signal analyzing unit 304 transmits the resource allocation notification S607 to the terminal 121 via the transmission / reception unit 303 (step S905). And it waits for resource allocation response S610 from the terminal 121 (step S906: No loop). When the resource allocation response S610 is received from the terminal 121 (step S906: Yes), the process is terminated.

  If there is no C / U separation indicator in step S902 (step S902: No), the resource management apparatus 201 performs processing according to the resource allocation procedure without C / U separation as in the conventional case (step S907), The process ends.

  FIG. 10 is a flowchart showing a processing procedure of the resource centralized management apparatus when a user data resource allocation request is made by a terminal. The processing of the resource central management apparatus 210 shown in FIG. 6 is shown. When the resource central management apparatus 210 receives the resource allocation request S603 from the resource management apparatus 201 (step S1001), the signal analysis unit 405 (see FIG. 4) makes an allocation request to the resource allocation unit 406. The resource allocation unit 406 selects a suitable access method from the reception level (radio wave measurement report) of the terminal 121 and the user data call request service (step S1002). Next, the resource allocation unit 406 checks the resource usage status of the base station corresponding to the access method selected in step S1002 from the resource usage status storage unit 407, and allocates resources (step S1003).

  Next, the resource allocation unit 406 generates a message of the resource reservation request S605 and sends it to the signal analysis unit 405. The signal analysis unit 405 sends the resource securing request S605 to the resource management device 202 that is the resource securing destination regarding the user data via the transmission / reception unit 404 (step S1004). Thereafter, the process waits for a resource securing response S606 from the resource management apparatus 202 (step S1005: No loop). When a resource securing response S606 is received from the resource management device 202 (step S1005: Yes), the signal analysis unit 405 transmits a resource allocation notification S607 for the resource allocation request S601 of the terminal 121 via the transmission / reception unit 404. It transmits to the apparatus 201 (step S1006), and complete | finishes a process.

  FIG. 11 is a flowchart showing a processing procedure of another resource management device when a resource allocation request for user data is made by a terminal. The process of the resource management apparatus 202 shown in FIG. 6 is shown. When the resource management device 202 receives the resource securing request S605 from the resource centralized management device 210 (step S1101), the signal analysis unit 304 (see FIG. 3) displays the resource usage status stored in the resource usage status storage unit 306. Collate and secure resources. Then, a resource securing response S606 indicating that the resource has been secured is transmitted to the resource centralized management apparatus 210 (step S1102). Further, the secured resource is updated and stored in the resource usage status storage unit 306 (step S1103), and the process is terminated.

(Procedure when a terminal having a C / U separation function moves to another cell)
FIG. 12 is a schematic diagram illustrating a state in which a terminal having a C / U separation function has moved to another access method cell. Each configuration shown in FIG. 12 is the same as that shown in FIG. 1, but the access method d shown in FIG. 1 is omitted for convenience of explanation. Only the terminal 121 having the C / U separation function is shown. In the following description, it is assumed that the terminal 121 assigned to the access method b moves under the access method c as illustrated. The control signal link is handed over to switch the user data link from the access method b to the access method c while the link of the control signal is assigned to the access method a. The contents of this handover will be described.

  FIG. 13 is a sequence diagram illustrating a handover procedure when the terminal moves. The terminal 121 is performing user data communication with the base station 102 of the access method b (S1301). Here, when the terminal 121 assigned to the access method b moves under the access method c, the reception level of the radio wave of the channel in communication in the cell 112 of the access method a decreases. Then, the reception level monitoring unit 506 (see FIG. 5) detects that the reception level is below a preset threshold value (S1302). As a result, the terminal 121 transmits a measurement report S1303.

  The measurement report S1303 includes information such as a C / U separation indicator and a radio wave measurement report, and is transmitted to the resource management apparatus 201 via the access system a base station 101. The resource management apparatus 201 determines that the terminal 121 is a terminal having a C / U separation function based on the C / U separation indicator included in the measurement report S1303 (S1304). As a result, the resource management apparatus 201 notifies the resource central management apparatus 210 of the handover request S1305. The handover request S1305 includes information such as a C / U separation indicator, a radio wave measurement report, and a requested service.

  The resource central management apparatus 210 determines the base station to be handed over by the handover request S1305 (S1306). Here, it is determined that a handover is performed to the base station 103 of the access scheme c. As a result, the resource centralized management apparatus 210 notifies the resource management apparatus 203 of the corresponding access method c of a resource securing request S1307 related to user data. When the resource management apparatus 203 can secure the resource, the resource management apparatus 203 notifies the resource central management apparatus 210 of a resource reservation response S1308.

  Thereafter, the resource central management apparatus 210 transmits a handover response S1309 to the terminal 121 via the resource management apparatus 201 of the access method a and the base station 101. The handover response S1309 includes information such as an access scheme that secures resources, a corresponding cell, and a channel. The handover response S1309 in this case is information on the access method c and the cell 113.

  In response to the handover response S1309, the terminal 121 performs channel setting for user data (S1310). Thereafter, the terminal 121 starts user data communication with the IP router 600 via the base station 103 of the access method c (S1311). At the same time as or before or after the start of communication of this user data, the terminal 121 sends a handover end notification S1312 corresponding to the handover response S1309 via the base station 101 and the resource management device 201 that have established control signals. The central management apparatus 210 is notified. Thereafter, the resource centralized management apparatus 210 notifies the resource management apparatus 202 of the access method b that has used the previous resource, a resource release request S1313. The resource management apparatus 202 notifies the resource central management apparatus 210 of a resource release response S1314.

  FIG. 14 is a chart showing the message content of the measurement report. Each information of the measurement report S1303 described with reference to FIG. 13 is listed. As illustrated, the measurement report S1303 includes a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), and measurement information (Measurement Information Elements) are essential information elements. The measurement information is a reception level result report (radio wave measurement report) of a receivable wireless access method. The measurement report S1303 is provided with a C / U separation indicator as an option. This IE of the C / U separation indicator can be used in a terminal (terminal 121) having a C / U separation function. For example, if the value is 1, it indicates that the C / U separation function is provided, and is stored in the C / U separation indicator storage unit 509 (see FIG. 5).

  FIG. 15 is a flowchart showing the processing procedure of the terminal at the time of handover. The process of the terminal 121 shown in FIG. 13 is shown. The terminal 121 is assumed to be in a state where user data is being communicated. The terminal 121 monitors the change in the radio wave level by the reception level monitoring unit 506 (see FIG. 5). The reception level monitoring unit 506 monitors the reception level deterioration of the user data and notifies the signal analysis unit 505 together with the radio wave measurement report (step S1501). When the reception level falls below a preset threshold due to the movement of the terminal 121, a measurement report S1303 is transmitted (see FIG. 13). As a result, the resource management apparatus 201 on the network side makes a handover request S1305, and transmits a handover response S1309 to the terminal 121 after securing resources in the destination cell (cell 113 in the example of FIG. 13).

The terminal 121 waits for a handover response S1309 (step S1502: No loop). When the handover response S1309 comes (step S1502: Yes), the signal analysis unit 505 instructs the transmission / reception unit 504 to perform the user data reception setting in accordance with the received handover response S1309 (step S1503: Yes). S1503). As a result, the transmission / reception unit 504 becomes ready to receive user data, and the signal analysis unit 505 transmits the handover end notification S1312 to the base station 101 with the established control signal (step S1504). Thus, the handover process ends, and the terminal 121 communicates user data with the base station 103 of the new cell 113 that is the movement destination (step S1505), and the process ends.

  FIG. 16 is a flowchart showing a processing procedure of the resource management device at the time of handover. The process of the resource management apparatus 201 shown in FIG. 13 is shown. When the resource management apparatus 201 receives the measurement report S1303 of the terminal 121 (step S1601), the signal analysis unit 304 (see FIG. 3) checks whether the message of the measurement report S1303 includes a C / U separation indicator. Judgment is made (step S1602). If there is a C / U separation indicator (step S1602: Yes), the signal analysis unit 304 transmits a handover request S1305 to the resource central management apparatus 210 via the transmission / reception unit 303 (step S1603). Then, it waits for a handover response S1309 (see FIG. 13) from the resource central management apparatus 210 (step S1604: No loop).

  When the handover response S1309 is received from the resource central management apparatus 210 (step S1604: Yes), the signal analysis unit 304 transmits the handover response S1309 to the terminal 121 via the transmission / reception unit 303 (step S1605). Then, it waits for a handover end notification S1312 from the terminal 121 (step S1606: No loop). When the handover end notification S1312 is received from the terminal 121 (step S1606: Yes), the handover end notification S1312 is transmitted to the resource central management apparatus 210 via the transmission / reception unit 303 (step S1607), and the process is terminated. .

  If there is no C / U separation indicator in step S1602 (step S1602: No), the resource management apparatus 201 performs processing according to a handover procedure without C / U separation as in the conventional case (step S1608). The process ends.

  FIG. 17 is a flowchart showing a processing procedure of the resource central management apparatus at the time of handover. The processing of the resource central management apparatus 210 shown in FIG. 13 is shown. When the resource centralized management apparatus 210 receives the handover request S1305 from the resource management apparatus 201 (step S1701), the signal analysis unit 405 (see FIG. 4) requests the resource allocation unit 406 to perform handover processing. The resource allocation unit 406 selects a suitable access method based on the reception level (radio wave measurement report) included in the handover request S1305 and the user data call request service (step S1702). Next, the resource allocation unit 406 checks the resource usage status of the base station corresponding to the access method selected in step S1702 from the resource usage status storage unit 407, and allocates resources (step S1703).

  Next, the resource allocation unit 406 generates a message of the resource reservation request S1307 and sends it to the signal analysis unit 405. The signal analysis unit 405 sends this resource reservation request S1307 to the resource management device 203 that is a resource reservation destination for user data via the transmission / reception unit 404 (step S1704). Thereafter, the process waits for a resource securing response S1308 from the resource management apparatus 203 (step S1705: No loop). When a resource reservation response S1308 is received from the resource management device 203 (step S1705: Yes), the signal analysis unit 405 transmits a handover response S1309 to the handover request S1305 of the terminal 121 via the transmission / reception unit 404. (Step S1706).

  Thereafter, the process waits for a handover end notification S1312 from the resource management apparatus 201 (step S1707: No loop). When the handover end notification S1312 is received from the resource management apparatus 201 (step S1707: Yes), the signal analysis unit 405 transmits the terminal 121 to the resource management apparatus 202 that manages the user data cell before the handover of the terminal 121. A resource release request S1313 is issued so as to release the resource for this (step S1708). After that, it waits for a resource release response S1314 from the resource management apparatus 202 (step S1709: No loop). When a resource release response S1314 is received from the resource management device 202 (step S1709: YES), the process is terminated.

  Next, the processing procedure of the other resource management device 203 at the time of handover is the same as that shown in FIG. Although the processing of the resource management apparatus 202 is performed in FIG.

  FIG. 18 is a flowchart showing another resource management device processing procedure during handover. The process of the resource management apparatus 202 shown in FIG. 13 is shown. When the resource management device 202 receives the resource release request S1313 from the resource centralized management device 210 (step S1801), the signal analysis unit 304 (see FIG. 3) releases the corresponding resource and stores it in the resource usage status storage unit 306. The stored resource usage status is updated (step S1802). Then, a resource release response S1314 corresponding to the resource release request S1313 is transmitted to the resource central management apparatus 210 (step S1803), and the process ends.

(Procedure when receiving a call to a terminal having a C / U separation function)
FIG. 19 is a sequence diagram showing a procedure when an incoming call is received from the network side to the terminal. The network side performs an incoming request S1901, and performs paging for the corresponding terminal 121 via the resource management apparatus 201 to which the terminal 121 has been assigned. The incoming request S1901 includes information such as the ID of the terminal 121 and an incoming call request service.

  The terminal 121 that has received the paging notifies the paging response S1902. The paging response S1902 includes information such as a C / U separation indicator and a radio wave measurement report. This paging response S1902 is output to the resource management apparatus 201 via the access method a base station 101. The resource management apparatus 201 determines that the terminal 121 is a terminal having a C / U separation function based on the content of the paging response S1902 (S1903). Then, the resource management apparatus 201 notifies the resource central management apparatus 210 of a resource allocation request S1904.

  Based on this resource allocation request S1904, the resource centralized management apparatus 210 selects a base station with the optimum access method (S1905). In the example of FIG. 19, it is indicated that the base station 103 of the access scheme c is determined to be appropriate. Then, the resource centralized management apparatus 210 makes a resource reservation request S1906 to the resource management apparatus 203 of the access method c, and the resource management apparatus 203 notifies a resource reservation response S1907 in response. Thereafter, the resource centralized management apparatus 210 notifies the resource management apparatus 201 and the base station 101 of the access method a of resource allocation notification S1908. The resource allocation notification S1908 includes information such as the access method c, the cell 111, and the channel. This resource allocation notification S 1908 is notified from the base station 101 to the terminal 121.

  Upon receiving the resource allocation notification S1908, the terminal 121 performs channel setting for user data (S1909). Thereby, the terminal 121 starts communication of user data with the IP router 600 via the base station 103 of the access method c (S1910). At the same time as or before or after the start of user data communication, the terminal 121 responds to the resource management apparatus 201 with a resource allocation response S1911 corresponding to the resource allocation notification S1908.

  FIG. 20 is a chart showing the message content of the paging response. Each information of paging response S1902 demonstrated using FIG. 19 was listed. As illustrated, the paging response S1902 includes a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), and measurement information (Measurement Information Elements) are essential information elements. The measurement information is a reception level result report (radio wave measurement report) of a receivable wireless access method. In the paging response S1902, a C / U separation indicator is provided as an option. This IE of the C / U separation indicator can be used in a terminal (terminal 121) having a C / U separation function. For example, if the value is 1, it indicates that the C / U separation function is provided, and is stored in the C / U separation indicator storage unit 509 (see FIG. 5).

  FIG. 21 is a flowchart showing the processing procedure of the terminal at the time of an incoming call. The process of the terminal 121 shown in FIG. 19 is shown. When the terminal 121 receives paging (step S2101), the signal analysis unit 505 (see FIG. 5) monitors the C / U separation indicator stored in the C / U separation indicator storage unit 509 and the reception level monitoring unit 506. The reception level measurement status at the terminal is acquired (step S2102). Then, the signal analysis unit 505 instructs the transmission / reception unit 504 to transmit the C / U separation indicator and the radio wave reception report in the paging response S1902 (see FIG. 19), and establishes the cell in which the control signal is established. To the base station (base station 101 in the example of the procedure of FIG. 19) (step S2103).

  Next, the signal analysis unit 505 waits for the resource allocation notification S1908 (see FIG. 19) (step S2104: No loop), and when notified (step S2104: Yes), the transmission / reception unit 504 receives user data. Is set (step S2105). This user data is transmitted / received via a channel-set base station (base station 103 in the example of the procedure of FIG. 19). As a result, the transmission / reception unit 504 becomes ready to receive user data, and the signal analysis unit 505 transmits the resource allocation response S1911 to the base station of the cell in which the control signal is established (in the example of the procedure in FIG. 19). To the base station 101) (step S2106). As a result, the terminal 121 can transmit and receive the user data S1910 (step S2107), and the process ends.

  FIG. 22 is a flowchart showing a processing procedure of the resource management apparatus when an incoming call arrives at the terminal. The process of the resource management apparatus 201 shown in FIG. 19 is shown. When the resource management device 201 receives the incoming request S1901 to the terminal 121 (step S2201), the signal analysis unit 304 (see FIG. 3) performs paging on the terminal 121 (step S2202). Next, it is determined whether there is a C / U separation indicator in the message of the paging response S1902 coming from the terminal 121 (step S2203). If there is a C / U separation indicator (step S2203: Yes), the signal analysis unit 304 transmits a resource allocation request S1904 of the terminal 121 to the resource central management apparatus 210 via the transmission / reception unit 303 (step S2204). Then, it waits for a resource allocation notification S1908 (see FIG. 19) from the resource centralized management apparatus 210 (step S2205: No loop).

  When the resource allocation notification S1908 is received from the resource central management apparatus 210 (step S2205: Yes), the signal analysis unit 304 transmits the resource allocation notification S1908 to the terminal 121 via the transmission / reception unit 303 (step S2206). And it waits for resource allocation response S1911 from the terminal 121 (step S2207: loop of No). When a resource allocation response S1911 is received from the terminal 121 (step S2207: Yes), the process is terminated.

  If there is no C / U separation indicator in step S2203 (step S2203: No), the resource management apparatus 201 performs processing according to the resource allocation procedure without C / U separation as in the prior art (step S2208). The process ends.

  The processing procedure of the other component units arranged in FIG. 19, that is, the other resource management device 203 at the time of incoming to the terminal 121 is the same as the content shown in FIG. . Similarly, the processing procedure of the resource centralized management apparatus 210 at the time of incoming to the terminal 121 is the same as that shown in FIG.

  According to the first embodiment described above, the terminal has the presence / absence of the C / U separation function, transmits to the network side as the C / U separation indicator, and the network side also performs processing based on the C / U separation indicator Therefore, even if a terminal having a C / U separation function and a terminal having no existing C / U separation function coexist in a cell, the terminal does not have an existing C / U separation function Thus, resource allocation, handover, and incoming call to a terminal having a C / U separation function can be realized without affecting the above process.

  As described above, according to the first embodiment, an actual UMTS network accommodates terminals having various capabilities, a conventional single-mode terminal or a multi-mode terminal without a C / U separation function, and future Terminals having a C / U separation function can be used together in the same cell. In addition, since there is no need to change the function of a resource management device that has relied on the conventional wireless access method on the network side so as to support all wireless access methods, a conventional single-type wireless access method resource management device Therefore, the processing method and the processing speed for a terminal without a conventional C / U separation function in the UMTS network are not affected. Therefore, the existing radio access system-dependent resource management device function can be utilized to the maximum extent. Furthermore, the terminal having the C / U separation function can assign the control signal C and the user data U to different cells, thereby enabling efficient network operation.

(Embodiment 2)
Next, a second embodiment of the present invention will be described. Embodiment 2 of the present invention relates to a wireless terminal device and wireless communication capable of performing wireless access between a base station that handles only user data (not handle control signals) and a wireless terminal that can separate control signals and user data. The present invention relates to a system, a radio network, a radio resource management device, a radio resource management system, and a radio resource management method.

(System configuration for wireless access management)
FIG. 23 is a schematic diagram showing a radio access management system according to Embodiment 2 of the present invention. An area based on a plurality of radio access schemes (hereinafter referred to as access schemes) is provided around a plurality of base stations. The cell 2311 of the base station 2301 based on the access method 1 (for example, W-CDMA) has a wide area range. This base station 2301 handles both control signals and user data. The access scheme 3 is, for example, GSM or PDC, and the base station 2303 also handles both control signals and user data, and the area range of the cell 2313 is wide.

  The access system 2 base station 2301 described in FIG. 23 is configured to use a mobile base station (Mobile Router type). The base station 2301 is not limited to this, and a stationary base station (Access Point type) can also be used.

  The access method 2 is, for example, W-LAN, Bluetooth, or a new access method in the future, and the base station is 2302. This access method 2 has a higher transmission rate (transmission speed) than the access methods 1 and 3, the radius of the cell 2312 is narrow, it does not have a continuous radio wave coverage area, and is local (hot spot). And the like. This base station 2302 handles only user data and does not handle control signals. The base station 2302 has a function of routing an IP packet received from the wireless terminal A (2321) existing in the cell 2312.

  Here, the wireless terminal A (2321), which is a mobile phone of a mobile phone or the like, can communicate using the access methods 1, 2, and 3. Hereinafter, the wireless terminal is referred to as a terminal. The terminal A (2321) has a C / U separation function for separating the control signal (control data) C and the user data U. Note that a terminal that does not have the C / U separation function, for example, the terminal B (122) illustrated in FIG. However, the terminal B (122) cannot perform communication via the base station 2302 because the access method 2 base station does not handle the control signal. In the future, it is estimated that a method of performing communication between terminals without using the base station 2302 will appear. Such terminals can communicate with each other using the access method 2 described above.

  FIG. 24 is a block diagram showing a system on the network side of the wireless access management system according to the second embodiment. The resource management device 2400 on the network side collects the resource usage statuses of the base stations 2301, 2302, 2303 of the access methods 1, 2, 3 and can allocate the resources of the access methods 1, 2, 3 . The resource management device 2400 includes a plurality of resource management devices, and a resource management device that manages only one conventional access method, for example, the access method d (see FIG. 1), is provided. A resource central management device that can centrally manage resources may be provided.

  Each base station 2301, 2302, 2303 secures resources for terminal A (2321) and releases resources in accordance with instructions from the resource management device 2400. The base stations 2301 and 2303 of the wireless access systems 1 and 3 can handle both control signals and user data, and are connected to a resource management device 2400, a location information management device 2401, and an IP router 2402. The base station 2302 of the radio access method 2 handles only user data, is connected to the IP router 2402, and is not connected to the location information management device 2401. This base station 2302 is also connected to a resource management apparatus 2400 in order to receive instructions such as resource allocation to the terminal A (2321).

(Terminal configuration)
FIG. 25 is a block diagram showing an internal configuration of a terminal having a C / U separation function. The internal structure of terminal A (2321) having the C / U separation function shown in FIG. 23 is shown. As described above, the terminal A (2321) can communicate by the access methods 1, 2, and 3 and has a C / U separation function for separating the control signal C and the user data U. Three antennas 2501, 2502, and 2503 are provided corresponding to the three access methods a, b, and c. These antennas 2501, 2502, and 2503 are connected to the transmission / reception unit 2504, and receive and transmit radio signals corresponding to the access methods 1, 2, and 3, respectively. As will be described later, the signal analysis unit 2505 performs each process when the terminal A (2321) is transmitted, when the terminal A (2321) is handed over due to movement, and when the terminal A (2321) is received.

  The signal analysis unit 2505 is connected to a reception level monitoring unit 2506 that monitors the reception level of the radio signal and a location registration request unit 2507 that makes a location registration request to the network side. The reception level monitoring unit 2506 monitors the reception level and outputs it to the signal analysis unit 2505. The reception level monitoring unit 2506 is connected to a priority list storage unit 2508 that stores the priority order of control signals and the priority order of user data. A location registration area storage unit 2509 that stores the location registration area of the terminal A (2321) is connected to the location registration request unit 2507.

  FIG. 26A is a chart illustrating the contents of control signal priorities stored in the priority list storage unit. As illustrated, the priority list storage unit 2508 (see FIG. 25) stores the priority order of the control signals and the access method of each priority order. In the illustrated example, the access method 1 is stored so as to have a higher priority than the access method 3. Although this terminal A (2321) has communication capability for the access method 2, the base station 2302 of the access method 2 does not handle the control signal or is not suitable for transmission of the control signal. In A (2321), access method 2 is not listed in the priority order of the control signals. Thereby, the terminal A (2321) does not select the access method 2 for the control signal.

  FIG. 26B is a chart of the contents of the user data priority order stored in the priority list storage unit. As shown in the figure, the priority list storage unit 2508 (see FIG. 25) stores the priority order of user data and the access method of each priority order. In the illustrated example, the priority order is stored in the order of access method 2, access method 1, and access method 3 in descending order of priority.

  In this way, the priority order of the control signal and user data can be set and stored independently. Next, priority setting criteria will be described.

1. Examples of control signal priority setting criteria a. Security level setting (if access methods are different, authentication and encryption procedures are different. WLAN security is said to be weak)
b. Arbitrary setting by the operator (If each operator has their own wireless access method, the operator will set the operator's preferred access method according to the service at the time of incoming call, etc.)
c. Setting based on call charge level d. Setting due to terminal battery consumption difference (in the case of different access methods, the battery time of the terminal is different)
e. Setting based on the moving speed of the terminal (For a moving terminal, the wireless access method with a wide coverage area requires less control to update the location, so the access method with a wide coverage area is given priority during movement, especially during high-speed movement. Used for.)
The priority order of the control signals may be set automatically by the terminal itself or arbitrarily set by the user.

2. Example of user data priority setting criteria a. Setting by call charge level b. Settings based on differences in communication quality (for example, for the same voice or image services, etc., set based on differences in noise, delay, data loss, etc. due to different wireless access methods. For voice calls, au's CdmaOne method (There is less noise than DoCoMo's 2nd generation (PDC) system, and it cannot be heard intermittently.)
c. Setting based on the moving speed of the terminal (for a moving terminal, since a radio access method with a wide coverage area requires less handover, the radio access method with a wide cover area is preferentially used during movement, particularly during high-speed movement. )

  Since user data has various service classes (eg, voice, data, image, video, large data, small data, data that is susceptible to delay, data that may be delayed), the criteria can be set arbitrarily it can. The terminal can store such a priority list of user data. In the following description, the terminal determines which access method is used to communicate the control signal. As for user data, the network side is configured to determine which access method is used for communication. The terminal may be configured to set at least a priority order related to the control signal and select a base station to communicate with.

  If there is a wireless access method that does not handle a control signal, this wireless access method is not stored as the control signal priority order of the priority list storage unit 2508 (see FIG. 26-1), so that a wireless access method dedicated to user data can be obtained. It is possible to prevent the control signal from being selected for communication. Terminal A (2321) registers only the location registration area to which the control signal is assigned on the network side, so that the radio access method dedicated to user data does not need to handle control signals such as location registration and paging. Become. As will be described below, control signals (for example, resource allocation request, paging response, measurement report, etc.) are transmitted and received at the time of transmission / reception of terminal A (2321) and handover. Wireless access method 1 is used. By transmitting and receiving between the base station 2301 of the radio access scheme 1 for the control signal and the terminal A (2321), the base station 2302 of the radio access scheme 2 dedicated to user data can be used for outgoing / incoming calls and handovers. In addition, it is not necessary to handle the control signal, and the communication of the user data call with the terminal A (2321) can be established according to the instruction on the network side.

  FIG. 27 is a sequence diagram showing a procedure from when the terminal is turned on until the location is registered. When the terminal A (2321) is turned on, the terminal A (2321) decides to perform control signal communication with the access method 1 base station 2301. The access system 1 base station 2301 notifies the location information management device 2401 of a location registration request D1. The location information management device 2401 transmits a location registration response D2 to the base station 2301 and terminal A (2321) of the access method 1 as a response to the location registration request D1.

  FIG. 28 is a flowchart showing a terminal location registration procedure when the terminal is turned on. The process of each part of terminal A (2321) described in FIG. 25 is shown. First, when the terminal A (2321) is turned on (step S2801), the reception level monitoring unit 2506 measures the reception levels of the antennas 2501, 2502, and 2503 (step S2802). The reception level monitoring unit 2506 selects an access method that satisfies the reception condition of the control signal according to the reception level, and compares the selected result with the control signal priority stored in the priority list storage unit 2508. Then, the access method with the highest priority is determined for the control signal (step S2803).

  Next, a control signal is received by the determined access method, and signal analysis is started (step S2804). Thereafter, the location information of the base station for the selected control signal is received, and the location registration request unit 2507 collates the location registration area (step S2805). Then, the location registration request unit 2507 determines whether the location registration area is the same as the location registration area stored in the location registration area storage unit 2509 (step S2806). If the received location information is the same as the location registration area stored in the location registration area storage unit 2509 (step S2806: Yes), the terminal enters a state of being camped on the corresponding access method cell (step S2809). ), The location registration process is terminated.

  If the received location information is different from the location registration area stored in the location registration area storage unit 2509 (step S2806: No), the location registration area request unit 2507 transmits a location registration request to the base station (step S2806). S2807). Thereafter, a location registration response from the network (base station side) is received, and the location registration area stored in the location registration area storage unit 2509 is updated (step S2808). As a result, the terminal enters a “camping on” state in the corresponding access method cell (step S2809), and the location registration process ends.

  The location registration process will be described using a specific example. When the terminal A (2321) is powered on, control signal communication is performed with the access method 1 base station 2301 according to the control signal priority order (see FIG. 26-1) stored in the priority list storage unit 2508. It is decided to do. Terminal A (2321) receives the location information of this base station 2301, and collates it with the stored location registration area. If the received position information is the same as the stored position registration area, it is accommodated in the cell of this base station 2301. On the other hand, if the received position information is different from the stored location registration area as a result of collation with the stored location registration area, a location registration request is made and a new location registration area is created according to the returned location registration response. Update to the location registration area.

  Next, FIG. 29 is a sequence diagram illustrating a procedure example of updating the location registration of the terminal. When the reception level at terminal A (2321) deteriorates, a new access method for the control signal is selected, and when it is determined that the location registration area has changed, the location registration area is updated on the network side. The terminal A (2321) shown in FIG. 23 moves from the access method 1 base station 2301 to the cell of the access method 3 base station 2303 (arrow M1 in FIG. 23), and the reception level due to the access method 1 control signal deteriorates. In this case, the wireless access method 3 is selected as the control signal and the location registration is updated in the base station 2303.

  Since the terminal A (2321) moved from the access method 1 base station 2301 to the cell of the access method 3 base station 2303, the reception level of the access method 1 base station 2301 fell below a certain threshold. Terminal A (2321) selects an access method satisfying control signal communication from the reception status from the antennas (2501, 2502, 2503) of each wireless access method. In accordance with the control signal priority order stored in the priority list storage unit 2508, it is determined to perform control signal communication by the access system 3 base station 2303. The terminal A (2321) receives the location information of the base station 2303, compares it with the stored location registration area, determines that the location registration area is different, and updates the location registration on the network side. D3 is transmitted. The location registration request D3 is transmitted to the location information management apparatus 2401 via the access method 3 base station 2303. The location information management device 2401 transmits a location registration response D4 corresponding to this location registration request D3. This location registration response D4 is transmitted to the terminal A (2321) via the access system 3 base station 2303.

  FIG. 30 is a flowchart showing a terminal location registration update procedure. The process of each part of terminal A (2321) described in FIG. 25 is shown. First, the terminal A (2321) measures the reception level of each antenna 2501, 2502, 2503 by the reception level monitoring unit 2506 (step S3001). Here, when it is observed from the reception level measured by the reception level monitoring unit 2506 that the control signal of the base station of the access method being received is below a certain threshold, a new control signal is selected. Then, an access method that satisfies the reception condition is selected and collated with the priority list storage unit 2508, and the access method with the highest priority is determined for the control signal (step S3002).

  Next, a control signal is received by the determined access method, and signal analysis is started or continued (when the access method is not changed) (step S3003). Thereafter, the location information of the base station for the selected control signal is received, and the location registration request unit 2507 collates the location registration area (step S3004). Then, the location registration request unit 2507 determines whether the location registration area is the same as the location registration area stored in the location registration area storage unit 2509 (step S3005). If the received position information is the same as the position registration area stored in the position registration area storage unit 2509 (step S3005: Yes), the process ends without updating the position registration.

  When the received location information is different from the location registration area stored in the location registration area storage unit 2509 (step S3005: No), the location registration area request unit 2507 transmits a location registration request to the base station (step S3005). S3006). Thereafter, a location registration response from the network (base station side) is received, the location registration area stored in the location registration area storage unit 2509 is updated (step S3007), and the location registration process is terminated.

  The location registration process will be described using a specific example. Since the terminal A (2321) moved from the base station 2301 of the access scheme 1 to the base station 2303 of the access scheme 3, the reception level from the base station 2301 of the access scheme 1 deteriorated and fell below a predetermined threshold. Terminal A again selects the access method used for the control signal from the reception level of each wireless access method. The access method is selected in accordance with the control signal priority order (see FIG. 26A) stored in the priority list storage unit 2508. In this case, since only the access method 3 base station with the second highest priority satisfies the control signal reception condition, it is determined to perform control signal communication with the access method 3 base station 2303. Terminal A (2321) receives the location information of this base station 2303 and collates it with the stored location registration area. If the received location information is the same as the stored location registration area, the location registration area is not updated. On the other hand, if the received position information is different from the stored location registration area as a result of collation with the stored location registration area, a location registration request is made and a new location registration area is created according to the returned location registration response. Update to the location registration area.

(Procedure when user data resource is requested by terminal)
Next, a procedure from when the terminal A (2321) having the C / U separation function transmits a user data resource allocation request to when user data communication is established will be described. FIG. 31 is a sequence diagram showing a procedure when a user data resource is requested by a terminal. The terminal A (2321) is located in the cell 2312 shown in FIG. 23, and from the state where the control signal is communicated by the access method 1, the network side allocates user data resources, and the user data communication is performed. Is about to begin.

  Terminal A (2321) notifies resource allocation request D3101. The resource allocation request D3101 includes each information of a C / U separation indicator, a radio wave measurement report, and a requested service. The resource allocation request D3101 is output to the resource management apparatus 2400 via the access system 1 base station 2301. The resource management apparatus 2400 determines that the terminal A (2321) is a terminal having a C / U separation function based on the content of the resource allocation request D3101. Then, the resource management apparatus 2400 comprehensively determines from the radio wave measurement report of the terminal A (2321), the QoS characteristics of the requested service, and the resource usage status on the network side, and selects the access system 2 base station 2302 (D3102). .

  Then, the resource management device 2400 makes a resource reservation request D3103 to the access method 2 base station 2302, and the access method 2 base station 2302 secures the resource and notifies the resource management device 2400 of a resource reservation response D3104. To do. Thereafter, the resource management apparatus 2400 notifies the base station 2301 of the access method 1 of the resource allocation notification D3105. The resource allocation notification D3105 includes information on access method 2, cell 2312, channel, and the like. This resource allocation notification D3105 is notified from the base station 2301 of the access method 1 to the terminal A (2321).

  In response to the resource allocation notification D3105, the terminal A (2321) performs channel setting for user data (D3106). Thereby, the terminal A (2321) starts communication of user data with the IP router 2402 via the base station 2302 of the access method 2 (D3107). At the same time as or after the start of user data communication, the terminal A (2321) responds to the resource management apparatus 2400 via the access method 1 base station 2301 with a resource allocation response D3108 corresponding to the resource allocation notification D3105.

  As described above, when the terminal A (2321) notifies the resource allocation request D3101, the network side selects the base station 2302 of the access method 2 for user data and notifies the terminal A (2321). Even if the user data call is established, the location registration procedure for the user data call is not performed. All procedures related to resource allocation are communicated between the access method 1 base station 2301 that handles control signals and the terminal A (2321), and the access method 2 base station 2302 that handles user data is not involved.

  FIG. 32-1 is a chart showing the message contents of the resource allocation request. Each information of the resource allocation request D3101 described using FIG. 31 is listed. As shown in the figure, the resource allocation request D3101 includes a plurality of information elements (IEs: Information Elements). Message type (Message Type), UE information (UE information Elements), requested service information, and measurement information (Measurement Information Elements) are essential information elements. The requested service information includes QoS related information such as user data to be transmitted (call service information, assigned traffic class, bit rate request, delay request). The measurement information is a reception level result report (radio wave measurement report) of the receivable access method. The resource allocation request D3101 is provided with a C / U separation indicator as an option. The IE of the C / U separation indicator can be used in the terminal A (2321) having the C / U separation function. For example, a value of 1 indicates that a C / U separation function is provided.

  FIG. 32-2 is a chart showing the message contents of the resource allocation notification. Each information of the resource allocation notification D3105 described with reference to FIG. 31 is listed. As illustrated, the resource allocation notification D3105 is composed of a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), and allocated channel information (Physical channel information Elements) are essential information elements. The assigned channel information is channel information for receiving user data, and includes information such as the access method name, cell number, channel reception timing, frequency, and modulation / demodulation method of the assigned user data call use channel.

(Procedure when a terminal having a C / U separation function moves to another cell)
FIG. 33 is a schematic diagram showing a state in which a terminal having a C / U separation function has moved to another access method cell. Each configuration shown in FIG. 33 is the same as that shown in FIG. 23, but subscripts are added to the reference symbols of the cell and the base station before and after movement. In the following description, as shown in the figure, it is assumed that the terminal A (2321) assigned to the cell 2312a of the access method 2 has moved to a different cell 2312b of the same access method 2 (arrow M2 in FIG. 33). . Then, while the control signal link is assigned to the access method 1, handover is performed to switch the user data link from the access method 2 cell 2312a to the same access method 2 cell 2312b. The contents of this handover will be described.

  FIG. 34 is a sequence diagram showing a handover procedure when the terminal moves. The terminal A (2321) is performing user data communication using the access method 2 base station 2302a (D3401). Here, when the terminal A (2321) assigned to the base station 2302a of the access method 2 moves under the base station 2302b of the same access method 2, the terminal A (2321) moves into the cell 2312a of the access method 2 The radio wave condition of the user data communication channel during communication in is degraded. Then, the reception level monitoring unit 2506 (see FIG. 25) detects that the reception level is below a preset threshold value (D3402). Thereby, the terminal A (2321) transmits the measurement report D3403.

  The measurement report D3403 includes information such as a C / U separation indicator and a radio wave measurement report, and is transmitted to the resource management apparatus 2400 via the access method 1 base station 2301. Based on the C / U separation indicator included in the measurement report D3403, the resource management apparatus 2400 determines that the terminal A (2321) is a terminal having a C / U separation function, and the radio wave measurement report and communication of the terminal Judgment is made comprehensively from the QoS characteristics of the middle service and the resource usage status on the network side, and it is determined that the handover is performed to the base station 2302b of the access method 2 (D3404). As a result, the resource management apparatus 2400 notifies the access reservation 2 base station 2302b of a resource securing request D3405 regarding user data. When the resource can be secured, the base station 2302b of the access method 2 notifies the resource management device 2400 of a resource securing response D3406.

  Thereafter, the resource management apparatus 2400 transmits a handover response D3407 to the terminal A (2321) via the access system 1 base station 2301. The handover response D3407 includes information such as an access method 2 that secures resources, a corresponding cell 2302b, and a channel.

  In response to the handover response D3407, the terminal A (2321) sets the channel of user data (D3408). Thereafter, the terminal A (2321) starts communication of user data with the IP router 2402 via the base station 2302b of the access method 2 (D3409). At the same time before or after the start of user data communication, the terminal A (2321) sends a handover end notification D3410 corresponding to the handover response D3407 via the base station 2301 of the access method 1 in which the control signal is established. The resource management apparatus 2400 is notified. Thereafter, the resource management device 2400 notifies the resource release notification D3411 to the base station 2302a of the access method 2 that used the previous resource. The base station 2302a notifies the resource management apparatus 2400 of a resource release response D3412.

  As described above, the terminal A (2321) notifies the measurement report to the network side when the reception level of the user data is deteriorated. On the network side, the base station 2302 (2302a, 2302b) of the radio access scheme 2 for user data is selected and notified to the terminal A (2321). Even if the user data call is handed over, the location registration procedure for the user data call is not performed. All procedures related to handover are communicated between the access method 1 base station 2301 that handles control signals and the terminal A (2321), and the access method 2 base stations 2302 (2302a and 2302b) that handle user data are involved. Absent. In a terminal having a C / U separation function, handover of control signals and user data is performed independently. Although the user data handover procedure has been described above, the control signal handover procedure follows the RRC-connected, PMM idle state terminal handover procedure in the conventional UMTS, and thus the description thereof is omitted.

  FIG. 35 is a chart showing message contents of the measurement report. Each information of the measurement report D3403 described with reference to FIG. 34 is listed. As shown in the figure, the measurement report D3403 is composed of a plurality of information elements (IE). Message type (Message Type), UE information (UE information Elements), and measurement information (Measurement Information Elements) are essential information elements. The measurement information is a reception level result report (radio wave measurement report) of the receivable access method. The measurement report D3403 is provided with a C / U separation indicator as an option. The IE of the C / U separation indicator can be used in the terminal A (2321) having the C / U separation function. For example, a value of 1 indicates that a C / U separation function is provided.

  FIG. 36 is a chart showing the message content of the handover response. Each information of the handover response D3407 described with reference to FIG. 34 is listed. As illustrated, the handover response D3407 includes a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), and allocated channel information (Physical channel information Elements) are essential information elements. The assigned channel information is channel information for receiving user data, and includes information such as the access method name, cell number, channel reception timing, frequency, and modulation / demodulation method of the assigned user data call use channel.

(Procedure when receiving a call to a terminal having a C / U separation function)
FIG. 37 is a sequence diagram showing a procedure when an incoming call is received from the network side to the terminal. This will be described with reference to the schematic diagram of FIG. The network side issues an incoming call request D3701 from the IP router 2402 to the resource management apparatus 2400, and performs paging for the corresponding terminal A (2321). The incoming call request D3701 includes information such as the ID of the terminal A (2321) and the incoming call request service.

  The terminal A (2321) that has received the paging notifies the paging response D3702. The paging response D3702 includes information such as a C / U separation indicator and a radio wave measurement report. This paging response D 3702 is output to the resource management apparatus 2400 via the access system 1 base station 2301. The resource management device 2400 determines that the terminal A (2321) is a terminal having a C / U separation function based on the content of the paging response D3702, and determines the network side from the radio measurement report of the terminal and the QoS characteristics of the incoming call. Judging from the resource utilization situation comprehensively, it is determined that the access method 2 base station 2302 suitable for user data transmission of an incoming call is good (D3703). Then, the resource management apparatus 2400 notifies the resource reservation request D3704 to the access system 2 base station 2302. Correspondingly, the access system 2 base station 2302 notifies the resource securing response D3705. Thereafter, the resource management device 2400 notifies the access scheme 1 base station 2301 of a resource allocation notification D3706. The resource allocation notification D3706 includes information such as access method 2, cell 2312, and channel (see FIG. 32-2). This resource allocation notification D3706 is notified from the access system 1 base station 2301 to the terminal A (2321).

  In response to the resource allocation notification D3706, the terminal A (2321) performs user data channel setting (D3707). Thereby, the terminal A (2321) starts communication of user data with the IP router 2402 via the base station 2302 of the access method 2 (D3708). At the same time as or before or after the start of user data communication, the terminal A (2321) responds to the resource management apparatus 2400 with a resource allocation response D3709 corresponding to the resource allocation notification D3706.

  As described above, the position information management device 2401 is a location registration area where the terminal A (2321) belongs to the control signal, and paging is performed on the location registration area of the registered control signal. Terminal A (2321) makes a paging response to paging, and the network side selects base station 2302 of radio access scheme 2 for incoming user data calls and informs terminal A (2321). Here, even if the user data call is established, the location registration procedure for the user data call is not performed. All procedures related to incoming calls are communicated between the access method 1 base station 2301 that handles control signals and the terminal A (2321), and the access method 2 base station 2302 that handles user data is not involved.

  FIG. 38 is a chart showing the message content of the paging response. Each information of the paging response D3702 described with reference to FIG. 37 is listed. As illustrated, the paging response D3702 is composed of a plurality of information elements (IEs). Message type (Message Type), UE information (UE information Elements), and measurement information (Measurement Information Elements) are essential information elements. The measurement information is a reception level result report (radio wave measurement report) of the receivable access method. In the paging response D3702, a C / U separation indicator is provided as an option. The IE of the C / U separation indicator can be used in the terminal A (2321) having the C / U separation function. For example, a value of 1 indicates that a C / U separation function is provided.

  According to the configuration described above, the terminal having the C / U separation function has the priority order of the radio access scheme of the control signal and the priority order of the user data independently. Therefore, if the wireless access method that does not handle the control signal is not stored in the priority order of the control signal, the wireless access method (base station) dedicated to user data is not selected as the wireless access destination of the control signal. In addition, since the terminal can register only the location registration area to which the control signal belongs to the network side, the radio access method (base station) that handles user data exclusively does not handle control signals such as location registration and paging. That's it.

  At present, the control signal and user data belong to the same location registration area for location registration, and these control signals and user data are registered in the network as a common location registration area. And when an incoming call comes to the terminal, the terminal is paged in the area where the location is registered, but the base station of the radio access method used for the incoming call belongs to the location registration area where the paging is always performed, There is a restriction that must be the wireless access method used for paging. Current base stations need to be capable of handling both control signals and user data, and all base stations handle control signals and user data simultaneously. However, base stations suitable for the transmission of user data that will increase in the future use radio access systems with high transmission rates. Such radio access systems generally have a narrow cover area, exist as hot spots, and are continuous. Since it has a feature that it does not have a radio wave coverage area, even if it is used for processing a control signal, the terminal frequently goes out of service or a handover occurs, so it is not suitable for the use of a control signal. Further, since the base station for user data transmission handles the control signal, the processing becomes complicated, and it is difficult to reduce the size and cost of the base station itself.

  According to the second embodiment described above, all transmission / reception of control signals related to selection of user data calls at the time of handover and handover of a terminal, for example, resource allocation request, paging response, measurement report, etc. Using a radio access scheme for control signals, transmission and reception can be performed between a base station and a terminal using the radio access scheme for control signals. In addition, the base station of the radio access method dedicated to user data does not need to handle control signals at the time of incoming / outgoing of terminals or handover, and establishes communication of user data calls with the terminal according to the instructions on the network side become able to. In this way, a base station that handles only user data can be installed, and since this base station does not need to process control signals with the terminal, the cost of the base station can be reduced. The spread of base stations that handle only user data can be promoted. In the second embodiment, the network side is configured to receive the notification of information having the C / U separation function from the wireless terminal A (2321) and determine the presence / absence of the C / U separation capability. The present invention is not limited to this, and the C / U separation capability of the wireless terminal can be detected by other means. For example, on the network side, the presence / absence of the C / U separation function may be stored in advance for each type of wireless terminal.

  In the future, services provided by telecommunications carriers are expected to increase in demand for broadband service quality such as movie distribution. According to the configuration of the first embodiment, it is possible to provide a plurality of wireless access methods (W-CDMA, WLAN, Bluetooth, etc.) while supporting conventional service provision. A wireless access method suitable for the location of the terminal and the required transmission rate can be assigned, so that the convenience of the user who owns the terminal can be improved and the processing efficiency can be improved by the optimum processing on the network side. become.

  Furthermore, as a mobile communication infrastructure, only user data and a transmission network will be owned in the future, and it can be used effectively for mobile communication providers that provide services and has convenience. That is, according to the configuration of the second embodiment, when a user needs communication control such as outgoing call, incoming call, handover, etc., the base station that communicates user data transmits a control signal to the terminal, Data can be communicated independently of each other by different wireless access schemes, and control signals and user data can be assigned to different location registration areas. Such a base station does not need to actively intervene in control signals for communication control. For this reason, a communication network system including a base station that handles only user data can be constructed.

The method for managing radio resources described in this embodiment can be realized by executing a program prepared in advance on a computer such as a personal computer or a workstation. This program is recorded on a computer-readable recording medium such as a hard disk, a flexible disk, a CD-ROM, an MO, and a DVD, and is executed by being read from the recording medium by the computer. The program may be a transmission medium that can be distributed via a network such as the Internet.

(Supplementary Note 1) A storage unit having a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods, and storing information having the C / U separation function When,
Control means for performing control to transmit information having the C / U separation function stored in the storage means to a network;
A wireless terminal device comprising:

(Supplementary Note 2) The control means includes:
When transmitting a resource allocation request for transmission of the user data, a measurement report at handover, and a paging response at incoming to the network, the C / C read from the storage means The wireless terminal device according to appendix 1, wherein information having a U separation function is transmitted together.

(Supplementary Note 3) A transmission / reception unit that transmits and receives the user data is provided.
The control means detects a radio access method indicated by a resource allocation notification returned from the network in response to the resource allocation request after transmitting a resource allocation request for transmission of the user data to the network. The wireless terminal apparatus according to appendix 2, wherein transmission / reception setting is performed on the transmission / reception unit according to the wireless access method.

(Appendix 4) Transmission / reception means for transmitting / receiving the user data;
Reception level monitoring means for monitoring the reception level of the current assigned cell in the network,
When the reception level monitored by the reception level monitoring unit decreases, the control unit transmits a measurement report including the reception level to the network, and then corresponds to the measurement report. The wireless terminal according to appendix 2, wherein a wireless access method indicated by a handover response returned from the network is detected, and transmission / reception setting is performed for the transmission / reception unit according to the wireless access method. apparatus.

(Supplementary Note 5) Provided with transmission / reception means for transmitting and receiving the user data,
The control means detects the radio access method indicated by the resource allocation notification returned from the network in response to the paging response after transmitting the paging response to the network at an incoming call, and the transmitting / receiving means The wireless terminal device according to appendix 2, wherein transmission / reception setting is performed according to the wireless access method.

(Supplementary Note 6) Priority level storage means for storing priority level information of a radio access method used for communication of the control signal,
The control means controls communication of the control signal with the network based on the priority order information of the control signal stored in the priority order storage means. The wireless terminal device according to any one of the above.

(Supplementary note 7) Priority order storage means for storing priority information of the wireless access method used for communication of the control signal and the user data,
The control means, based on the priority information of the control signal stored in the priority storage means, and the priority information of the user data, communication of the control signal with the network, The wireless terminal device according to any one of appendices 1 to 5, wherein user data communication is individually controlled.

(Supplementary Note 8) When the reception level of the current assigned cell in the network decreases, the control means refers to the priority information of the control signal stored in the priority order storage means, and creates a new radio 8. The wireless terminal device according to appendix 6 or 7, wherein communication by an access method is selected.

(Supplementary note 9) The wireless terminal apparatus according to supplementary note 6 or 7, wherein the priority order storage means stores information other than a wireless access method for handling communication by the user data as a priority order of the control signal. .

(Supplementary note 10) According to any one of Supplementary notes 1 to 9, further comprising location registration request means for requesting location registration of a location area of a base station of a radio access method for communicating the control signal to the network. Wireless terminal device.

(Supplementary note 11) The wireless terminal apparatus according to Supplementary note 10, wherein the location registration requesting unit makes a location registration request related to a location area of a base station other than a radio access method used for communication of the user data.

(Additional remark 12) It has C / U separation function which can communicate control signal (C) and user data (U) using a different radio access system, and the location registration area which belongs to communication of control signal on the network side A wireless terminal apparatus comprising location registration request means for requesting registration.

(Additional remark 13) It has a C / U separation function which can communicate control signal (C) and user data (U) using a different wireless access system, and a location registration area belonging to control signal communication is on the network side A wireless terminal equipped with a location registration request means for requesting registration;
When receiving an incoming call to the wireless terminal, paging the location registration area of the control signal to which the wireless terminal belongs, and a wireless access method used for the communication of the user data, a paging response and an incoming call transmitted from the wireless terminal Management means for selecting and notifying the wireless terminal based on the QoS information of the call;
A wireless communication system comprising:

(Supplementary Note 14) When receiving information on a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods from the accommodated wireless terminal device, A wireless network comprising a management means for selecting an optimum wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device based on information on a U separation function.

(Supplementary Note 15) Each time a resource allocation request for transmission of user data, a measurement report at the time of handover, and a paging response at the time of an incoming call to the wireless terminal device are received from the accommodated wireless terminal device, A wireless network comprising a management means for selecting an optimum wireless access method among wireless access methods capable of communicating the user data with a wireless terminal device.

(Supplementary Note 16) The management means includes
(Supplementary note 15) wherein a base station of a radio access scheme used for communication of the control signal with the radio terminal device is selected separately from a base station of a radio access scheme used for communication of the user data. The wireless network described.

(Supplementary Note 17) In a radio resource management apparatus that manages allocation of resources to accommodated radio terminal apparatuses using a plurality of radio access methods,
When receiving information from the wireless terminal device about the C / U separation function that enables communication of the control signal (C) and the user data (U) using different wireless access methods, the C / U of the wireless terminal device A determination means for determining the separation function;
When the determination unit determines that the wireless terminal device has a C / U separation function, a wireless device that selects an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device. Access method selection means;
Resource securing means for securing a resource of a base station for performing communication with the wireless terminal device, corresponding to the wireless access method selected by the wireless access method selecting means;
A radio resource management apparatus comprising:

(Supplementary Note 18) The wireless access method selection means includes:
Each time a resource allocation request for transmission of the user data, a measurement report at handover, and a paging response at incoming to the wireless terminal device are received from the wireless terminal device, the wireless terminal device 18. The radio resource management apparatus according to appendix 17, wherein an optimal radio access scheme is selected from radio access schemes capable of communicating the user data during the period.

(Supplementary note 19) The wireless access method selection means includes:
(Supplementary note 17) wherein a radio access scheme base station used for communication of the control signal with the radio terminal device is selected separately from a radio access scheme base station used for communication of the user data. The radio resource management device described.

(Additional remark 20) In the radio | wireless resource management apparatus which manages allocation of the resource with respect to the accommodated radio | wireless terminal apparatus using a some radio | wireless access system,
The first resource management device manages communication resources related to the control signal (C) with the wireless terminal device,
The second resource management apparatus manages a communication resource related to user data (U) with the wireless terminal apparatus.

(Supplementary note 21) The radio resource management according to supplementary note 20, wherein a plurality of base stations managed by the second resource management device are arranged in a cell of a base station managed by the first resource management device. apparatus.

(Supplementary note 22) The radio resource management device according to supplementary note 21, wherein the number of the second resource management devices is the same as the number of the base stations.

(Supplementary note 23) The radio resource management according to any one of supplementary notes 20 to 22, wherein a plurality of the second resource management devices and the base stations are provided corresponding to different radio access schemes. apparatus.

(Supplementary Note 24) Resources related to the control signal (C) of the wireless terminal device managed by the first resource management device and resources related to user data (U) of the wireless terminal device managed by the second resource management device 24. The radio resource management device according to any one of appendices 20 to 23, wherein a third resource management device that centrally manages the network is provided.

(Supplementary note 25) The radio resource management device according to supplementary note 24, wherein the first resource management device or the second resource management device has a function of centralized management by the third resource management device.

(Additional remark 26) It has the C / U separation function which can communicate a control signal (C) and user data (U) using a different radio | wireless access system, and transmits the information of the said C / U separation function to a network Possible wireless terminal devices,
A plurality of base stations that perform wireless communication using the control signal or user data with the wireless terminal device,
When receiving information on a C / U separation function that is connected to the plurality of base stations and can communicate between a control signal transmitted by the wireless terminal device and user data using different wireless access methods, the C / U Based on the information of the separation function, an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device, a resource management device that selects a base station of the wireless access method,
A radio resource management system comprising:

(Supplementary note 27) C / U separation function for transmitting information of C / U separation function capable of communicating control signal (C) and user data (U) from wireless terminal device using different wireless access methods to network An information transmission process;
A signal transmission / reception step for performing wireless communication by the control signal or user data between the wireless terminal device and the network;
The network that has received the information of the C / U separation function capable of communicating the control signal and the user data using different wireless access methods in response to the request or response transmitted from the wireless terminal device, the C / U separation function Based on the information, a resource management step of selecting an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device;
A radio resource management method comprising:

(Supplementary note 28) including a priority storage step of storing information on the priority of the radio access method used for communication of the control signal,
The signal transmission / reception step includes
28. The radio resource management method according to appendix 27, wherein radio communication of the control signal with the network is performed based on the priority order information of the control signal stored in the priority order storage step.

(Supplementary Note 29) The resource management step receives a resource allocation request for transmission of the user data, a measurement report at the time of handover, and a paging response at the time of arrival to the wireless terminal device from the wireless terminal device. 29. The radio resource management method according to appendix 27 or 28, wherein an optimal radio access scheme is selected from radio access schemes capable of communicating the user data with the radio terminal device each time.

  As described above, in the radio terminal device, radio communication system, radio network, radio resource management device, radio resource management system, and radio resource management method according to the present invention, the radio access method in which the control signal and the user data are the same A wireless terminal device having a new C / U separation function can be accommodated in a network that accommodates existing wireless terminal devices, and in particular, a higher transmission rate can be achieved while maintaining the existing service provision. Suitable for providing necessary new services and effective use of resources.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram which shows the radio | wireless access management system by Embodiment 1 of this invention. 1 is a block diagram showing a network-side system in a wireless access management system according to Embodiment 1. FIG. It is a block diagram which shows the internal structure of a resource management apparatus. It is a block diagram which shows the internal structure of a resource centralized management apparatus. It is a block diagram which shows the internal structure of the terminal which has a C / U isolation | separation function. It is a sequence diagram which shows the procedure at the time of the user data resource request | requirement by a terminal. It is a graph which shows the message content of a resource allocation request. It is a flowchart which shows the process sequence of the terminal at the time of the resource allocation request | requirement of user data. It is a flowchart which shows the process sequence of the resource management apparatus at the time of the resource allocation request | requirement of the user data by a terminal. It is a flowchart which shows the process sequence of the resource centralized management apparatus at the time of the resource allocation request | requirement of the user data by a terminal. It is a flowchart which shows the process sequence of the other resource management apparatus at the time of the resource allocation request | requirement of the user data by a terminal. It is a schematic diagram which shows the state which the terminal which has a C / U isolation | separation function moved to the cell of another access system. It is a sequence diagram which shows the procedure of a hand-over when a terminal moves. It is a graph which shows the message content of a measurement report. It is a flowchart which shows the process sequence of the terminal at the time of a handover. It is a flowchart which shows the process sequence of the resource management apparatus at the time of a handover. It is a flowchart which shows the process sequence of the resource centralized management apparatus at the time of a handover. It is a flowchart which shows the other resource management apparatus processing procedure at the time of a handover. It is a sequence diagram which shows the procedure at the time of the incoming call with respect to a terminal from the network side. It is a table | surface which shows the message content of a paging response. It is a flowchart which shows the process sequence of the terminal at the time of an incoming call. It is a flowchart which shows the process sequence of the resource management apparatus at the time of the incoming call to a terminal. It is a schematic diagram which shows the radio | wireless access management system by Embodiment 2 of this invention. 6 is a block diagram showing a system on the network side of a wireless access management system according to a second embodiment. FIG. It is a block diagram which shows the internal structure of the terminal which has a C / U isolation | separation function. It is a table | surface which shows the content of the control signal priority stored in a priority list memory | storage part. It is a graph which shows the content of the user data priority stored in a priority list memory | storage part. It is a sequence diagram which shows the procedure after a terminal turns on power until it registers a location. It is a flowchart which shows the position registration procedure at the time of power activation of a terminal. It is a sequence diagram which shows the example of a procedure of the location registration update of a terminal. It is a flowchart which shows the location registration update procedure of a terminal. It is a sequence diagram which shows the procedure at the time of the user data resource request | requirement by a terminal. It is a graph which shows the message content of a resource allocation request. It is a graph which shows the message content of a resource allocation notification. It is a schematic diagram which shows the state which the terminal which has a C / U isolation | separation function moved to the cell of another access system. It is a sequence diagram which shows the procedure of a hand-over when a terminal moves. It is a graph which shows the message content of a measurement report. It is a chart which shows the message content of a handover response. It is a sequence diagram which shows the procedure at the time of the incoming call with respect to a terminal from the network side. It is a table | surface which shows the message content of a paging response.

Explanation of symbols

101, 102, 103, 104, 2301, 2302, 2303 Base station 111, 112, 113, 114 Cell 121, 122, 123, 2321 Terminal 201, 202, 203, 2400 Resource management device 210 Resource centralized management device 303, 404, 504, 2504 Transmission / reception unit 304, 405, 505, 2505 Signal analysis unit 305, 406 Resource allocation unit 306, 407 Resource usage status storage unit 501, 502, 503, 2501, 2502, 2503 Antenna 506, 2506 Reception level monitoring unit 507 User data resource request unit 509 C / U separation indicator storage unit a, b, c, 1, 2, 3 Access method 2401 Location information management device 2402 IP router 2507 Location registration request unit 2508 Priority list storage unit 2509 Location registration area storage unit

Claims (10)

A storage unit having a C / U separation function capable of communicating the control signal (C) and the user data (U) using different wireless access methods, and storing information having the C / U separation function;
Control means for performing control to transmit information having the C / U separation function stored in the storage means to a network;
A wireless terminal device comprising: Priority order storage means for storing priority information of a radio access method used for communication of the control signal,
2. The control unit according to claim 1, wherein the control unit controls communication of the control signal with the network based on priority level information of the control signal stored in the priority level storage unit. Wireless terminal device. Priority order storage means for storing information on the priority order of each wireless access method used for communication of the control signal and the user data,
The control means, based on the priority information of the control signal stored in the priority storage means, and the priority information of the user data, communication of the control signal with the network, The wireless terminal apparatus according to claim 1 or 2, wherein communication of user data is individually controlled.   A position having a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods, and requesting registration of a position registration area belonging to control signal communication to the network side A wireless terminal device comprising registration request means. A position having a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods, and requesting registration of a position registration area belonging to control signal communication to the network side A wireless terminal equipped with a registration request means;
When receiving an incoming call to the wireless terminal, paging the location registration area of the control signal to which the wireless terminal belongs, and a wireless access method used for the user data is defined as a paging response and an incoming call transmitted from the wireless terminal. Management means for selecting and notifying the wireless terminal based on QoS information;
A wireless communication system comprising:   When receiving information on a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods from the accommodated wireless terminal device, the C / U separation function A wireless network comprising a management unit that selects an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device based on information.   Each time a resource allocation request for transmission of user data, a measurement report at handover, and a paging response at incoming to the wireless terminal device are received from the accommodated wireless terminal device, the wireless terminal device A wireless network comprising a management means for selecting an optimum wireless access method among wireless access methods capable of communicating the user data. In a radio resource management apparatus that manages allocation of resources to accommodated radio terminal apparatuses using a plurality of radio access methods,
When receiving information from the wireless terminal device about the C / U separation function that enables communication of the control signal (C) and the user data (U) using different wireless access methods, the C / U of the wireless terminal device A determination means for determining the separation function;
When the determination unit determines that the wireless terminal device has a C / U separation function, a wireless device that selects an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device. Access method selection means;
Resource securing means for securing a resource of a base station for performing communication with the wireless terminal device, corresponding to the wireless access method selected by the wireless access method selecting means;
A radio resource management apparatus comprising: A wireless terminal having a C / U separation function capable of communicating a control signal (C) and user data (U) using different wireless access methods and capable of transmitting information on the C / U separation function to a network Equipment,
A plurality of base stations that perform wireless communication using the control signal or user data with the wireless terminal device,
When receiving information on a C / U separation function that is connected to the plurality of base stations and can communicate between a control signal transmitted by the wireless terminal device and user data using different wireless access methods, the C / U Based on the information of the separation function, an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device, a resource management device that selects a base station of the wireless access method,
A radio resource management system comprising: A C / U separation function information transmission step of transmitting information on a C / U separation function capable of communicating the control signal (C) and the user data (U) from the wireless terminal device using different wireless access methods to the network; ,
A signal transmission / reception step for performing wireless communication by the control signal or user data between the wireless terminal device and the network;
The network that has received the information of the C / U separation function capable of communicating the control signal and the user data using different wireless access methods in response to the request or response transmitted from the wireless terminal device, the C / U separation function Based on the information, a resource management step of selecting an optimal wireless access method among wireless access methods capable of communicating the user data with the wireless terminal device;
A radio resource management method comprising:

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