CN100450205C - Method for Realizing Called User Terminal Performing Packet Domain Service in Idle State - Google Patents

Abstract

The invention discloses a method for realizing packet domain service by a called user terminal in an idle state. The method is as follows: a PPP connection is established between the first terminal and the PDSN; when the network side receives the origination request containing the service type information sent by the first terminal, it determines whether the service type of this time is based on the service type information in the origination request. It is a point-to-point real-time packet service. If it is a point-to-point real-time packet service and the second terminal is in an idle state, it sends a call origination request to the base station to which the second terminal belongs, including service type information, PPP-related address information of the first terminal and the second terminal. The terminal user number; the base station to which the second terminal belongs establishes a wireless service channel with the second terminal after receiving the call origination request; the base station to which the second terminal belongs establishes an A8 connection with the PCF, an A10 connection is established between the PCF and the PDSN, and the second terminal communicates with the A PPP connection is established between PDSNs. Thereafter, point-to-point bidirectional packet data services can be performed between the first terminal and the second terminal.

Description

Method for Realizing Called User Terminal Performing Packet Domain Service in Idle State

technical field

The present invention relates to the field of communication technology, in particular to a method for realizing packet domain services of a called user terminal in an idle state.

Background technique

With the continuous enrichment of data services, the current network provides more and more real-time packet data services, including streaming media downloads, video telephony, IP voice (VoIP), etc., for services with high real-time requirements such as streaming media downloads , the main service application is that the user terminal actively initiates an application, and then it is provided by the network side.

At present, the 3GPP2 standard has defined the procedures for the user terminal to receive the PSD paging in the dormant state and the data service active state, but there is no definition for how the user terminal receives the PSD paging in the idle state. That is to say, according to the standard, for the packet data provided by the network side, the user terminal in the dormant state and the data service active state can passively receive it, but the user terminal in the idle state will not be able to achieve passive reception.

In practice, for such services as video telephony and VoIP, the probability of a user terminal actively initiating paging and being paged is equal, so the user terminal also needs to be called in an idle state. In order to save power, the terminal generally has a relatively high probability of being in an idle state. However, according to current standards, user terminals in an idle state cannot receive packet domain service data.

Contents of the invention

In view of this, the object of the present invention is to provide a method for realizing the packet domain service of the called user terminal in the idle state, and the method can make the user terminal in the idle state receive the data of the packet domain service as the called party.

In the present invention, a point-to-point protocol (PPP) connection is established or has been established between the first terminal and the packet data serving node (PDSN), and the second terminal is in an idle state. A method for realizing the packet domain service of the called user terminal in the idle state provided by the present invention includes:

a. After the network side receives the call origination request containing the service type information of the point-to-point real-time packet service, the PPP-related address information of the first terminal, and the user number of the second terminal sent by the first terminal that has established a PPP connection, if the second terminal In the idle state, the network side notifies the second terminal to perform point-to-point real-time packet services through the circuit domain paging network, and transmits the PPP-related address information of the first terminal to the second terminal;

b. After receiving the notification, the second terminal judges that the service type is a point-to-point real-time packet service according to the service type information, and then actively initiates a packet service connection and establishes a PPP connection with the PDSN;

c. A packet data service is performed between the first terminal and the second terminal.

In the step a, the network side notifies the second terminal to perform point-to-point real-time packet services through the circuit domain paging network, and the step of transferring the PPP-related address information of the first terminal to the second terminal may include:

a1, the Mobile Switching Center (MSC) on the network side sends a call origination request to the base station to which the second terminal belongs, which includes the service type information of the point-to-point real-time packet service, the first terminal PPP related address information and the second terminal user number;

a2. After receiving the call origination request, the base station to which the second terminal belongs sends a paging message to the second terminal according to the user number of the second terminal, which carries the service type information of the point-to-point real-time packet service.

The step of actively initiating a packet service connection described in step b, and establishing a PPP connection with the PDSN may include:

b1. The second terminal sends a paging response message to the base station to which the second terminal belongs;

b2. After receiving the paging response message, the base station to which the second terminal belongs sends the paging response message to the mobile switching center; after receiving the paging response message, the MSC sends a channel assignment request message to the base station to which the second terminal belongs;

b3. After receiving the channel assignment request message, the base station to which the second terminal belongs completes the channel assignment, and initiates the establishment of a wireless service channel with the second terminal, and establishes an A8 connection between the base station to which the second terminal belongs and the packet control unit (PCF), An A10 connection is established between the PCF and the PDSN.

In step b3, an A8 connection is established between the base station to which the second terminal belongs and the PCF, and the steps for establishing an A10 connection between the PCF and the PDSN may include:

b31. The base station to which the second terminal belongs initiates an A9-A8 connection establishment message to the PCF to which the second terminal belongs;

b32. After receiving the A9-A8 connection establishment message sent by the base station to which the second terminal belongs, the PCF establishes an A10 connection with the PDSN;

b33. After the A10 connection is established between the PCF and the PDSN, send an A9-A8 connection message to the base station to which the second terminal belongs;

b34. After receiving the A9-A8 connection message, the base station to which the second terminal belongs sends an assignment complete message (Assignment Complete message) to the MSC.

It may further include before step b31:

b311. The base station to which the second terminal belongs sends a service connection message to the second terminal, and performs service negotiation with the second terminal. After the service negotiation is completed, the second terminal sends a service connection complete message to the base station to which the second terminal belongs, and then performs step b31.

In the above solution of the present invention, the first terminal is the calling user terminal, and the second terminal is the called user terminal. The present invention realizes the real-time point-to-point packet domain service for the user terminal in the idle state as a similar circuit domain voice service, and uses the existing circuit domain paging network to page the user terminal in the idle state, and the user terminal receives After the paging request of the circuit domain, it is determined that the request is a real-time point-to-point packet domain service request, and then actively initiates the establishment of a packet service connection, thereby realizing the point-to-point real-time packet domain service. Because the method subdivides the current real-time packet service, separates the point-to-point packet service, and paging the user terminal in the idle state through the circuit domain, the access success rate of the packet domain service is improved. Moreover, since the traditional packet domain network bearer is still used in terms of bearer, point-to-point packet domain services can be implemented for the called user terminal in the idle state, so the system has few changes and the method is simple.

Description of drawings

Fig. 1 is the schematic flow chart realizing the method of the present invention;

Fig. 2 is the schematic flow chart of the specific embodiment 1 of realizing the method of the present invention;

Fig. 3 is a schematic flowchart of a second embodiment of the method of the present invention.

Detailed ways

The core idea of the present invention is: after the network side receives the service type information of the packet domain service sent by the first user terminal, the PPP-related address information of the first user terminal, and the user number of the second user terminal, the network side determines the second Whether the user terminal is in an idle state, if the second user terminal is in an active state or in a dormant state, then proceed according to the existing normal process; if the second user terminal is in an idle state, the network side notifies the second terminal through the circuit domain paging network Point-to-point real-time packet service; after receiving the notification, the second user terminal judges that the service type is point-to-point real-time packet service according to the service type information, and then actively initiates a packet service connection and establishes a PPP connection with the PDSN; the first user terminal A packet data service is performed between the terminal and the second user terminal. Thereafter, the second user terminal can receive packet-domain service data through the PPP connection, and of course, can also send packet-domain service data to the first user terminal through the PPP connection. For convenience of description, hereinafter, the first user terminal is referred to as the first terminal for short, and the second user terminal is referred to as the second terminal for short.

Referring to shown in Figure 1, realizing the method of the present invention comprises the following steps:

Step 101: After the network side receives the call origination request containing the service type information of the point-to-point packet domain service, the PPP-related address information of the first terminal, and the user number of the second terminal sent by the first terminal that has established a PPP connection, if the second The terminal is in an idle state, and the network side notifies the second terminal to perform point-to-point real-time packet services, and transmits the PPP-related address information of the first terminal to the second terminal;

It should be noted that the manner of judging whether the user terminal is in the idle state may include various forms. For example: according to the standard paging terminal, if the terminal cannot be paged, the MSC defaults the terminal to be in the idle state, and records the terminal as the idle state; if the terminal is currently registered and updated in the MSC, the AN stores If there is status information of the terminal, including whether the terminal is in an idle state, the MSC can directly page to the AN to which the terminal belongs through IWS transparent transmission, and then the AN will judge whether the terminal is in an idle state, and if so, the AN will page the group The call message is forwarded to the terminal; or the AN notifies the MSC of the status of the terminal currently registered in the MSC through the A1 interface through the IWS, and notifies the MSC once each time the terminal status changes, and the MSC records the status of the terminal and receives the status information of the terminal again time, the records are updated in time, therefore, the MSC can judge whether the terminal is in an idle state through its own records.

Step 102: After receiving the notification, the second terminal judges that the current service type is a point-to-point real-time packet service according to the service type information, then actively initiates a packet service connection, and establishes a PPP connection with the PDSN;

Step 103: performing a packet data service between the first terminal and the second terminal.

Referring to Fig. 2, the first embodiment of the method for realizing the present invention includes the following steps:

Step 200: A PPP connection is established between the first terminal and the PDSN.

Step 201: MSC judges the current status of the second terminal after receiving the call origination request sent by the first terminal and contains the service type information in the packet domain. If the second terminal is currently in an idle state, it notifies the second terminal to perform point-to-point real-time grouping business; if it is in the active state/dormant state, it will be processed according to the existing processing flow of the active state/dormant state, and this process will end.

Step 202: After receiving the notification, the second terminal determines that the current service type is a real-time point-to-point service type, and establishes a PPP connection between the second terminal and the PDSN.

Step 203: A point-to-point real-time packet data service is performed between the first terminal and the second terminal.

In the above step 201, informing the second terminal to perform the point-to-point real-time packet service may include two ways.

The first method: the MSC sends a call origination request through the base station to which the second terminal belongs (hereinafter referred to as the second base station), which includes real-time point-to-point service type information, PPP-related address information of the first terminal and the user number of the second terminal, and the second After receiving the origination request, the base station sends the origination request to the second terminal, which contains real-time point-to-point packet service type information;

The second method: MSC sends to the short message service center the notification that the second terminal performs the point-to-point real-time packet service; after receiving the notification, the short message service center sends a short message to the second terminal to perform the point-to-point real-time packet service.

At present, a series of service types have been defined in the 3GPP2 agreement, and Table 1 shows the service type values defined by 3GPP2. When the calling terminal sends an origination request to the network side, it contains the service type value of the requested service, and the network side determines the service type requested by the user according to the service type value in the received origination request, and then according to different Business type, assigning different network resources to users and adopting different processing procedures.

Service OptionValue(hex) Description 8000H 13K speech 0011H 13K high rate voice service 0003H EVRC 003EH Wideband Speech Codec 801FH 13K Markov 0004H Asynchronous Data rate set 1 0005H Group 3 Fax rate set 1 0007H^a Packet Data Service: Internet or ISO Protocol Stack (Revision 0) 0023H Position Location Determination(PLD)Rate Set 1 0024H Position Location Determination(PLD)Rate Set 2 0009H 13K loopback 0038H Selectable Mode Vocoder(SMV) 000CH Asynchronous Data rate set 2 000DH Group 3 Fax rate set 2 0006H SMS rate set 1 000EH SMS rate set 2 000FH^a Packet Data Service: Internet or ISO Protocol Stack (14.4kbps 0012H OTAPA Rate Set 1 0013H OTAPA Rate Set 2 0020H IS-2000 Test Data 0036H IS-2000 Markov 0037H IS-2000 Loopback

Table 1

In the present invention, in order to page the called user terminal in the idle state and make the called user terminal perform point-to-point grouping services in real time, it is necessary to further define a new service type in the existing service type table, which is used to represent real-time The type of point-to-point packet service. Referring to Table 2, here 0039H and 0040H are respectively defined as the point-to-point real-time packet service type of the 1x system and the point-to-point real-time packet service type on the HRPD system. Of course, the present invention is not limited to 0039H and 0040H, and other reserved numbers can be used.

0039H Packet Data Service: Point to Point real-time packet service(lx system) 0040H Packet Data Service: Point to Point real-time packet service (HRPDsystem)

Table 2

Therefore, when the MSC receives the call origination request containing the packet domain service type information sent by the calling terminal, if the called terminal is in an idle state, the base station will send the packet domain service containing the newly added point-to-point service of the present invention to the called terminal. The call origination request of type information, after receiving the call origination request, the called terminal finds that the packet domain service is currently needed, and initiates the establishment of a PPP connection.

The following takes the 1x system as an example to illustrate how the present invention initiates point-to-point real-time packet service paging through the existing circuit domain, so as to page to a terminal residing on the 1x network in an idle state.

Referring to Fig. 3, the specific steps for realizing Embodiment 2 of the present invention are as follows:

Step 301: the first terminal (MS1) sends an origination message (Origination Message) to the base station (BS1) to which the first terminal belongs through the air interface, for applying for a packet data service from BS1.

Steps 302-303: After receiving the Origination Message, BS1 sends a base station response order (BS Ack Order) to MS1 through the layer 2 protocol; and, BS1 constructs a connection management service request message (CM Service Request message), and sends it through the layer 3 message Order to send CM Service Requestmessage to MSC, start timer T303 simultaneously.

Step 304: After receiving the CM Service Request message, the MSC sends an assignment request message (Assignment Request message) to BS1 to apply for radio resources for MS1, and starts a timer T10 at the same time.

Step 305: After receiving the Assignment Request message, BS1 stops timer T303, allocates resources for MS1, and initializes and establishes a wireless service channel between BS1 and MS1.

Step 306: BS1 sends an A9-A8 connection establishment message (A9-Setup-A8 message) to PCF1, and sets the Data Ready Indicator (Data Ready Indicator) field to 1, which is used to apply for the establishment of an A8 connection, and starts the timer TA8- setup.

Step 307: PCF1 establishes A10 connection with PDSN after receiving the A9-Setup-A8 message sent by BS1.

Step 308: After the A10 connection is established between the PCF1 and the PDSN, the timer TA8-setup is stopped, and an A9-A8 connection message (A9-Connect-A8 message) is sent to BS1 to complete the establishment of the A8 link.

Step 309: After receiving the A9-Connect-A8 message, the BS1 sends an Assignment Complete message to the MSC, and the MSC stops the timer T10 after receiving the Assignment Complete message.

Step 310: A PPP connection is established between MS1 and the PDSN. The above steps 301-310 are the process for MS1 to establish a PPP connection.

Step 311: MSC starts timer T3113 when MSC receives a call origination request from MS1 containing service type information, first terminal PPP-related address information and called party number. If the service type is determined to be 0039H and the called party is determined to be Terminal MS2 is in the idle state, then according to the called user number, determine that the base station to which MS2 currently belongs is BS2, and then send a call origination request message (PagingRequest message) to BS2, which contains the service type information of the current service, if the called user terminal If it is currently active or dormant, it will be processed according to the existing process, and this process will end; if it is not 0039H, it will jump out of this process.

Step 312: After receiving the Paging Request message, BS2 sends a Pagemessage to MS2, where BS2 pages MS2 according to the called user number, and then BS2 waits for the initial response message (Page Response message) from MS2, and prepares to send channel assignment The message assigns a traffic channel for MS2.

Step 313: After receiving the Page message sent by BS2, MS2 sends a PageResponse message to BS2, wherein the service type value is 0039H.

Step 314: After receiving the Page Response message sent by MS2, BS2 judges that the current service type value is 0039H, then thinks that MS2 needs to perform packet data service, so sends PageResponse message to MSC, and stops timer T3113.

Step 315: After receiving the Page Response message sent by MS2, BS2 also sends a BS Ack Order to MS2.

Step 316: After receiving the Page Response message, the MSC judges that the current service type contained in the message is 0039H, so it sends an Assignment Request message to BS2, applies for assigning radio resources to the terminal, and starts the timer T10. After receiving it, BS2 stops the timer T303.

Step 317: BS2 and MS2 initialize and establish a wireless service channel.

Step 318: BS2 sends a Service Connect message to MS2, and actively initiates service negotiation with MS2. If no service negotiation is required, steps 317 and 318 can be omitted.

Step 319: After completing the service negotiation, MS2 feeds back a Service Connect Complete message to BS2.

Step 320: After receiving the Service Connect Complete message, BS2 determines that the service type of the current service is 0039H, initiates an A9-Setup-A8 message to PCF2, and establishes an A8 connection. And start the timer TA8-setup.

Step 321: PCF2 establishes A10 connection with PDSN after receiving the A9-Setup-A8 message sent by BS2.

Step 322: After the A10 connection is established between the PCF2 and the PDSN, an A9-Connect-A8 message is sent to BS2 to complete the establishment of the A8 link. And stop the timer TA8-setup.

Step 323: After BS2 receives the A9-Connect-A8 message, BS2 sends an Assignment Complete message, and the MSC stops the timer T10.

Step 324: A PPP connection is established between MS2 and PDSN. At this time, a two-way packet channel is established between MS1 and MS2, and packet data transmission can be performed.

Of course, the packet paging content can be notified to the terminal by short message. When the terminal initiates a packet data service call, it can forward the call content to the short message service center through the MSC. called user terminal. This solution is simple to implement, but the real-time and security of the short message cannot be guaranteed. When the short message is sent to the called terminal, it may cause the calling user to call out.

Since point-to-point real-time packet domain services have similar real-time and security requirements to voice services, the present invention adds a new service type (ServiceOption) for services similar to circuit domain voice, indicating that user terminals in an idle state are to be paged For point-to-point real-time packet services, the network side sends a paging message to the user terminal in the idle state through the circuit domain, which carries the service type information. After receiving the call initiation message, the user terminal judges whether the service type in the paging message is If it is a new service type, a point-to-point packet service channel is established to realize packet data services.

In a word, the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (5)

1. A method for implementing a called user terminal in an idle state to carry out packet domain services, characterized in that the method comprises the following steps: a. After the network side receives the call origination request containing the service type information of the point-to-point real-time packet service, the PPP-related address information of the first terminal and the user number of the second terminal sent by the first terminal that has established the PPP connection, if the first terminal The second terminal is in an idle state, and the network side notifies the second terminal to perform point-to-point real-time packet services through the circuit domain paging network, and transmits the PPP-related address information of the first terminal to the second terminal; b. After the second terminal receives the notification, it judges that the service type is a point-to-point real-time packet service according to the service type information, and the second terminal actively initiates a packet service connection, and establishes a PPP connection with the packet data service node PDSN; c. A point-to-point packet data service is performed between the first terminal and the second terminal. 2. The method according to claim 1, wherein the network side in step a notifies the second terminal to perform point-to-point real-time packet services through the circuit domain paging network, and transmits the PPP-related address information of the first terminal to the second terminal The steps of the second terminal include: a1. The MSC on the network side sends a call origination request to the base station to which the second terminal belongs, which includes the service type information of the point-to-point real-time packet service, the PPP-related address information of the first terminal and the user number of the second terminal; a2. After receiving the call origination request, the base station to which the second terminal belongs sends a paging message to the second terminal according to the user number of the second terminal, which carries the service type information of the point-to-point real-time packet service. 3. The method according to claim 1, characterized in that, in step b, the second terminal actively initiates a packet service connection, and the step of establishing a PPP connection with the PDSN includes: b1. The second terminal sends a paging response message to the base station to which the second terminal belongs; b2. After receiving the paging response message, the base station to which the second terminal belongs sends the paging response message to the mobile switching center; after receiving the paging response message, the MSC sends a channel assignment request message to the base station to which the second terminal belongs; b3. After receiving the channel assignment request message, the base station to which the second terminal belongs completes the channel assignment, and initializes and establishes a wireless service channel with the second terminal, establishes an A8 connection between the base station to which the second terminal belongs and the packet control unit PCF, and the PCF and An A10 connection is established between PDSNs. 4. The method according to claim 3, wherein in step b3, the base station to which the second terminal belongs establishes an A8 connection with the PCF, and the step of establishing an A10 connection between the PCF and the PDSN comprises: b31. The base station to which the second terminal belongs initiates an A9-A8 connection establishment message to the PCF to which the second terminal belongs; b32. After receiving the A9-A8 connection establishment message sent by the base station to which the second terminal belongs, the PCF establishes an A10 connection with the PDSN; b33. After the A10 connection is established between the PCF and the PDSN, send an A9-A8 connection message to the base station to which the second terminal belongs; b34. After receiving the A9-A8 connection message, the base station to which the second terminal belongs sends an allocation complete message to the MSC. 5. The method according to claim 4, further comprising: before step b31: b311. The base station to which the second terminal belongs sends a service connection message to the second terminal, and performs service negotiation with the second terminal. After the service negotiation is completed, the second terminal sends a service connection complete message to the base station to which the second terminal belongs, and then performs step b31.

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