CN101459969B - A method and device for base station resource release - Google Patents

Abstract

The invention discloses a method for releasing resources of a base station, comprising the following steps: when the base station allocates resources for a user equipment in the enhanced common channel data transmission E-FACH state, setting the timing corresponding to the priority queue of the user equipment The timer Treset2; the base station finds that the timer Treset2 expires, and then releases the resources related to the priority queue. The invention also discloses a base station equipment. The scheme of the present invention can realize that when the UE in the E-FACH state releases the service or transitions the state, or after the H-RNTI changes, the relevant resources in the base station equipment are released in time.

Description

A method and device for base station resource release

technical field

The present invention relates to the technical field of mobile communication access, in particular to a method and device for releasing base station resources.

Background technique

In the wideband code division multiplexing (WCDMA) system, according to the different connection modes of the radio resource control (Radio Resource Control, RRC), the state of the user equipment (User Equipment, UE) is divided into an idle state (Cell-IDLE) and a connection mode state . The connection mode is further subdivided into different service states: dedicated channel connection state (Cell-DCH), public channel data transmission state (Cell-FACH), cell paging state (Cell-PCH) and terrestrial wireless access network ( UTRAN) Registration Area Paging Status (URA-PCH). It is possible to switch between different service states in the connection mode and between the connection mode and the idle mode. During the UE state transition process, the identity (H-RNTI) of the UE will change. When the UE enters the connection mode from the idle state, the UE uses the public H-RNTI; when the UE enters the CELL-FACH and CELL-PCH states, it is possible to allocate a dedicated H-RNTI; when the UE migrates from the CELL-FACH and CELL-PCH When in the CELL-DCH state, the H-RNTI can inherit the previous H-RNTI, and can also allocate a new H-RNTI.

Enhanced public channel data transmission state (Enhanced CELL-FACH, E-FACH) is a newly added function in the 3GPP R7 version of the High Speed Packet Access Evolution (HSPA+) system, mainly refers to when the UE is in a non-Cell- In the DCH state, that is, when the UE is in the CELL-IDLE, CELL-FACH, CELL-PCH and URA-PCH states, it supports the reception of High Speed Downlink Packet Access (HSDPA) channels. From the network side, that is, when the UE is in the non-Cell-DCH state, it is carried on the Broadcast Control Channel (Broadcasting Control Channel, BCCH), the Common Control Channel (Common Control Channel, CCCH), and the Dedicated Control Channel (Dedicated Control Channel, DCCH) Or the downlink data on a logical channel such as a dedicated traffic channel (Dedicated Traffic Channel, DTCH) can be mapped to a high-speed downlink shared channel (High Speed Downlink Shared Channel, HS-DSCH), and transmitted to the UE through the HSDPA shared channel of the air interface.

Before the UE enters the E-FACH state, UTRAN makes the HS-DSCH reception in the E-FACH state effective by including the HS-DSCH reception parameters in the E-FACH state in the system broadcast information. These reception parameters include high-speed downlink sharing Control channel (HS-SCCH), high-speed physical downlink shared channel (HS-PDSCH) configuration and UE identifier H-RNTI allocated by radio network controller (RNC); UTRAN can also reconfigure HS-DSCH reception through dedicated RRC signaling parameter. After the UE reads the parameters, it establishes relevant signaling and service connections in the E-FACH state.

The HS-DSCH transmission process of the NodeB in the E-FACH state is basically the same as the HS-DSCH transmission process of the NodeB in the Cell-DCH state. The MAC-ehs entity of the NodeB establishes a priority queue for each user service, and processes the user services according to the sequence of the priority queue. Business is scheduled. The difference is that one E-FACH user may have multiple services, and the data of each service is sent from the corresponding service priority queue. However, each service priority queue is not dedicated to a certain user, but is shared by multiple users, so users need to be identified according to the H-RNTI identifier in the data. When the enhanced high-speed media access control (MAC-ehs) entity of the NodeB schedules service data, it needs to set a transmission sequence number (Transmission sequence number, TSN) for each newly transmitted data block. For E-FACH users, TSN needs to be counted for each H-RNTI.

The difference between the HS-DSCH reception process of UE in E-FACH state and the HS-DSCH reception process of UE in Cell-DCH state is that a Treset timer needs to be set for each service priority queue; if the UE receives the service When the Treset is not started for the data in the priority queue, the Treset timer should be started; if the Treset has been started, the Treset timer should be restarted. If the Treset timer expires but no data is received, restart the MAC-ehs.

In the above process, the RNC sends a Physical Shared Channel Reconfiguration (Physical Shared Channel Reconfiguration) message to the NodeB. If the message contains HS-DSCH common system information (Common System Information), the cell of the NodeB needs to support the E-FACH function. For NodeB, only the relevant information of E-FACH can be configured or reconfigured by RNC during cell establishment or cell resource reconfiguration; for the service establishment, service deletion or UE state migration of E-FACH users in the cell, RNC NodeB is not notified.

From the HS-DSCH transmission process of the NodeB described above, it can be seen that MAC-ehs scheduling needs to save information such as channel quality indicator (CQI) and HARQ process for each H-RNTI, and also needs to save TSN for each queue of the user. However, since there is no dedicated connection between the NodeB and the UE in the E-FACH state, when the state of the UE transitions, or when the H-RNTI of the UE changes, or when the service of the UE changes (such as deleting some services, increase some services), the RNC will not take the initiative to notify the NodeB, which causes the NodeB to fail to release the corresponding resources, resulting in a waste of resources.

In order to solve the above-mentioned problem that the Node cannot release resources in time, in the prior art, when a service is deleted or a state transitions or the H-RNTI changes, the RNC notifies the NodeB in real time to delete related resources through a separate message. In the process of the present invention, the inventor finds that this prior art has at least the following defects:

It is necessary to add interactive messages and an interactive mechanism between RNC and NodeB; RNC and NodeB need to increase corresponding processing. Compared with the existing protocol architecture, the changes are relatively large, and the message flow is relatively large.

Contents of the invention

In view of this, the embodiments of the present invention propose a method and device for releasing base station resources, which can realize timely release of base station resources without changing the existing protocol architecture.

The method for releasing base station resources proposed in the embodiment of the present invention includes the following steps:

When allocating resources for user equipment in the enhanced common channel data transmission E-FACH state, the base station sets a timer Treset2 corresponding to the priority queue of the user equipment; the value of the timer Treset2 is greater than or equal to the The value of the timer Treset of the user equipment;

When the base station finds that the timer Treset2 expires, it releases the resources related to the priority queue.

The base station equipment proposed in the embodiment of the present invention includes:

The queue timer unit is used to set and start the timer Treset2 corresponding to the priority queue of the user equipment in the enhanced common channel data transmission E-FACH state; the value of the timer Treset2 is greater than or equal to the user equipment The value of the timer Treset; the queue resource release unit is used to release the resources related to the priority queue corresponding to the timer Treset2 when the timer Treset2 set by the queue timer unit expires.

It can be seen from the above technical solution that the timer Treset2 corresponding to the priority queue is set in the base station, and when the timer expires, the resources related to the priority queue are released, which can realize that when the UE in the E-FACH state releases the service or After state transition or H-RNTI changes, relevant resources in the base station equipment are released in time.

Description of drawings

Fig. 1 is the processing flowchart of NodeB of the embodiment of the present invention;

FIG. 2 is a structural block diagram of a NodeB proposed by an embodiment of the present invention.

Detailed ways

The present invention aims at the problem that the UE cannot release resources in time in the E-FACH state, and the technical solutions of the proposed embodiments are summarized as follows: when the NodeB allocates resources for the UE, set a timer corresponding to the timer Treset on the UE side, referred to as timing Treset2, the value of Treset2 needs to be greater than or equal to the value of Treset, and it is updated in the same way. When Treset2 times out, the NodeB releases the corresponding resources.

The processing flow of the NodeB in the embodiment of the present invention is shown in Figure 1, including the following steps:

Step 101: NodeB allocates resources for UE. Corresponding resources need to be allocated to each priority queue of the UE.

Step 102: the NodeB sends the data block of a certain priority queue to the UE.

Step 103: NodeB checks the timer Treset2 corresponding to the priority queue

, if Treset2 is not started, then perform step 104; if Treset2 is started, then perform step 105; if the Treset2 timer expires, then perform step 106:

Step 104: start timer Treset2, and return to step 102;

Step 105: restart the timer Treset2, and return to step 102;

Step 106: Release the resources corresponding to the priority queue on the NodeB side. The resources corresponding to the priority queue mainly refer to cache resources occupied by some relevant information stored on the NodeB side, and if they can be released in time, the utilization rate of the NodeB cache resources can be improved. The information that the queue needs to save may include: TSN, the average output rate of the air interface of the queue, the division indication of the queue data, which processes are occupied by the queue transmission, etc.

Step 107: If the resources of all priority queues of an E-FACH user are released, the NodeB releases the resources occupied by the user equipment. The resource occupied by the user equipment may include the related measurement value of the CQI reported by the user equipment, and the CQI estimated by the NodeB based on the measurement value. The NodeB needs to consider the size of the data sent by the user and the power and modulation method used for transmission according to the CQI. ; The resources may also include which priority queues the user equipment contains.

According to the HS-DSCH receiving process of the UE in the E-FACH state described in the background technology, it can be known that the UE will actively reset the MAC-ehs entity after the UE does not receive data within the Treset time, so the NodeB side can also actively reset the MAC-ehs entity after the timer Treset2 expires. The corresponding resources are released to be consistent with the behavior of the UE.

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further elaborated below in conjunction with specific examples.

The solution of the first embodiment of the present invention is that the priority queue information message body (Priority Queue Information) of the E-FACH of the HS-DSCH common system information (Common System Information) of the physical shared channel reconfiguration message issued by the RNC to the NodeB for EnhancedFACH IE) to add Treset2 information element.

The priority queue information message body of the HS-DSCH public system message of the embodiment of the present invention is shown in Table 1,

Message body/group name Is it required Message body type and reference protocol Remark

Priority Queue ID (Priority QueueID... required 9.2.1.49C Scheduling Priority Indicator required 9.2.1.53H T1 required 9.2.1.56a Unit: milliseconds (ms) Timer Treset2 optional Integer (1, 2, 3, 4) The value is an integer multiple of the T1 value, and the default value is 2 Discard timer (DiscardTimer) optional 9.2.1.24E High-speed media access control window size (MAC-hs WindowSize) required 9.2.1.38B Maximum Common Media Access Control Protocol Data Unit Size (Maximum MAC-cPDU Size) required 9.2.1.38C Media Access Control Protocol Data Unit Size Extension (MACPDU Size Extended)

Table 1

Among them, T1 is the re-ordering release timer (Re-ordering release timer), which indicates the maximum waiting time of the UE for out-of-order MAC-hs PDUs when receiving them. Example: When a MAC-hs PDU arrives in the reordering cache, if the MAC-hs PDU sent before the MAC-hs PDU has not arrived in the reordering cache after T1 time has elapsed, the MAC-hs PDU will be delivered to the upper layer entity. The value of the timer Treset2 is an integer multiple of T1, and if the value is 2, it means that the timer Treset2=2T1.

The timer Treset2 and the timer Treset are configured by the RNC, and the value of Treset2 may be greater than or equal to the value of Treset. Before the NodeB allocates resources for the UE, the RNC performs the following operations:

According to the method of the prior art, the RNC configures the timer Treset to the UE;

According to the priority queue information message body of the extended HS-DSCH public system message shown in Table 1, the RNC sends the extended HS-DSCH public system message to the NodeB, and configures the timer Treset2 to the NodeB. After receiving the message, the NodeB sets the timer Treset2 corresponding to the priority queue according to the Treset2 configuration information and the priority queue identifier in the message.

Then the NodeB executes the process shown in Figure 1 until the NodeB releases the resources occupied by the UE. The RNC may also carry the configuration information of the timer Treset2 in other messages and send it to the NodeB.

The way to configure the timer can also be other ways, for example, it is directly configured in the NodeB, and the NodeB sets Treset2 according to the value of T1 issued by the RNC, for example, it is set as Treset2=4T1. When the NodeB allocates resources for the UE, the process shown in Figure 1 is executed.

The second embodiment of the present invention proposes a NodeB, its structural block diagram is shown in Figure 2, including:

A queue timer unit 201, configured to set and start a timer Treset2 corresponding to the priority queue of the user equipment;

The queue resource release unit 202 is configured to release resources related to the priority queue corresponding to the timer Treset2 when the timer Treset2 set by the queue timer unit 201 times out.

The user equipment resource release unit 203 is configured to release the resources occupied by the user equipment when all the resources in the priority queues of the user equipment are released.

The queue timer unit 201 further includes:

The starting unit 204 is configured to start or restart the timer Treset2 corresponding to the priority queue to which the data block belongs when the base station device sends the data block to the user equipment.

The timer setting unit 205 is configured to set the timer Treset2 corresponding to the priority queue identifier according to the timer Treset2 configuration information and the priority queue identifier carried in the message delivered by the radio network controller.

The solution of the present invention can realize that when the UE in the E-FACH state releases the service or transitions the state, or after the H-RNTI changes, the relevant resources in the NodeB can be released in time.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range.

Claims (9)

1. the method that base station resource discharges is characterized in that, comprises the steps:

The base station is provided with the timer Treset2 corresponding with the priority query of described subscriber equipment when transmitting the user equipment allocation resource of E-FACH state for the common channel data that is in enhancing; The value of described timer Treset2 is more than or equal to the value of the timer Treset of described subscriber equipment;

The base station finds that described timer Treset2 is overtime, then discharges the resource relevant with described priority query.

2. according to the method for the described base station resource release of claim 1, it is characterized in that this method further comprises: the base station judges that the resource of all priority queries of subscriber equipment all is released, and then discharges the resource that this subscriber equipment takies.

3. according to the method for the described base station resource release of claim 1, it is characterized in that described base station is provided with after the timer Treset2, further comprises:

The base station is every to send a data block to subscriber equipment, then checks the timer Treset2 of priority query's correspondence that described data block belongs to, if timer Treset2 does not start, then starts timer Treset2; If timer Treset2 starts, then restart timer Treset2.

4. the method that discharges according to the described base station resource of claim 1, it is characterized in that, described base station is provided with the timer Treset2 corresponding with the priority query of described subscriber equipment: the base station is provided with and the corresponding timer Treset2 of described priority query's sign according to the message of carrying timer Treset2 configuration information and priority query's sign that radio network controller issues.

5. the method that discharges according to the described base station resource of claim 4 is characterized in that, the message of carrying timer Treset2 configuration information and priority query's sign that described radio network controller issues is high speed downlink shared channel HS-DSCH message.

6. a base station equipment is characterized in that, comprising:

The formation timer units is used to be provided with and start the corresponding timer Treset2 of priority query that transmits the subscriber equipment of E-FACH state with the common channel data that is in enhancing; The value of described timer Treset2 is more than or equal to the value of the timer Treset of described subscriber equipment;

The queue resource releasing unit is used for discharging and the relevant resource of described timer Treset2 corresponding priorities formation when the timer Treset2 of described formation timer units setting is overtime.

7. base station equipment according to claim 6 is characterized in that, described base station equipment further comprises:

The resources for user equipment releasing unit is used for discharging the resource that this subscriber equipment takies when the resource of all priority queries of subscriber equipment all is released.

8. base station equipment according to claim 6 is characterized in that, described formation timer units further comprises:

Start unit is used in base station equipment when subscriber equipment sends data block, starts or restart the timer Treset2 of priority query's correspondence that described data block belongs to.

9. according to the described base station equipment of claim 6 to 8, it is characterized in that described formation timer units comprises:

Timer is provided with the unit, and the timer Treset2 configuration information and the priority query that are used for carrying according to the message that radio network controller issues identify, setting and the corresponding timer Treset2 of described priority query sign;

Perhaps, the value that is used for the timer T1 that reorders that issues according to radio network controller is provided with timer Treset2.

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