CN1499765A - Method for updating multimedia broadcast multicast service context in wireless unit controller - Google Patents

Abstract

A method for updating an MBMS context in a radio control unit controller. A user equipment in an idle state selects a new cell and sends a message to the radio unit controller where it is located; if the cell belongs to the same radio unit controller, then The controlling radio unit controller directly deletes the corresponding user equipment identifier; if it does not belong to the same controlling radio unit controller, the new controlling radio unit controller sends a message to the old controlling radio unit controller to update the MBMS context; the old controlling radio unit controls The device sends a message to the new controlling radio unit controller, reporting the completion of the MBMS context update; the new controlling radio unit controller sends a message to the user equipment, reporting the completion of the cell updating. The invention solves the problem that the MBMS context controlling the wireless unit controller cannot be updated when the user equipment leaves the cell in the idle state. By updating the context, the user's mobility can be effectively managed and radio resources can be used more reasonably.

Description

Method for updating multimedia broadcast multicast service context in wireless unit controller

technical field

The present invention relates to the field of multimedia broadcast/multicast services (referred to as MBMS), and in particular to a method for updating the MBMS context of the control radio unit controller (referred to as RNC) when user equipment in an idle state leaves the old control radio unit controller (referred to as RNC). .

Background technique

MBMS is a new service being standardized by the Third Generation Partnership Project (abbreviated as 3GPP). The MBMS service is a one-way point-to-multipoint service. The biggest feature of this service is that it can effectively utilize wireless resources and network resources. In this service, the multimedia data sent from the data source is sent to multiple users through the transmission network. This point-to-multipoint service can save network resources. The MBMS service is mainly used in wireless communication network systems, such as Wideband Code Division Multiple Access (WCDMA for short), Global System for Mobile (GSM for short), etc.

The transmission of MBMS data basically goes through several processes: data source transmission, intermediate network transmission, destination cell air transmission, and user reception. FIG. 5 is a diagram of logical network equipment capable of providing MBMS services. In this figure, MBMS actually utilizes a General Packet Radio Service (referred to as GPRS) network as a core transmission network. As shown in Figure 5, the broadcast/multicast service center (abbreviated as BM-SC) is the data source for sending MBMS data; the gateway GPRS support node (abbreviated as GGSN) is used for the connection between the GRPS network and the external network, such as INTERNET, in the MBMS service It is used to connect BM-SC and send MBMS data to a specific Serving GPRS Support Node (SGSN for short); Cell Broadcast Center (CBC for short) is the data source of cell broadcast. In MBMS, CBC and BM-SC are interconnected , so that CBC can provide the MBMS service announcement function; SGSN is used to perform access control and mobility management on UE and at the same time send MBMS data from GGSN to a specific control radio unit controller (RNC for short); RNC is used to control A group of base stations (referred to as NODE B) and transmit multimedia data to a specific NODE B; NODE B establishes an air physical channel for the MBMS service of a cell under the control of the RNC; the terminal user equipment (referred to as UE) is to receive MBMS Data terminal equipment.

Figure 6 shows the whole process of MBMS service from service announcement, user joining, service notification, radio bearer establishment to final user leaving.

000 Subscription - establishes the connection between the user and the service provider, and the authorized user can receive the relevant MBMS service.

001 Service Announcement - Inform the user of the service to be provided. For example, the system wants to broadcast a football match in downtown Beijing at 7:00 pm.

002 Join-indicates that the user joins a group, that is, the user tells the network that he or she is willing to receive this multicast service.

003 MBMS multicast bearer - establishes network resources for MBMS data transmission.

004 MBMS notification-inform the user of the upcoming MBMS data transmission.

005 Data transmission - indicates the process of transmitting MBMS service data to users.

006 MBMS multicast bearer release - indicates that network resources are released after MBMS service data transmission is completed.

007 Leaving corresponds to 002 Joining, which means that the user wants to leave a group, that is, he no longer wants to receive data of a certain service.

During the process of establishing the MBMS multicast bearer, the controlling radio unit controller will establish the MBMS context for the service. The context is closely related to the service ID, including information such as the ID of the user equipment receiving the service, the ID of the service, and the ID of the cell. In the process of data transmission, the UE will move from the cell of one RNC to the cell of the own RNC or another RNC. When the user equipment moves into the new cell, the controlling radio unit controller to which the cell belongs will modify the MBMS context and add information about Information about the user equipment, such as a user equipment identifier. As shown in Figure 7. However, the update of the MBMS context of the old cell is not provided in the prior art.

Contents of the invention

The purpose of the present invention is to provide a method for updating the MBMS context of the old controlling radio unit controller when the user equipment leaves.

In order to achieve the above object, according to an aspect of the present invention, a method for controlling an update of MBMS context in a wireless unit controller comprises the steps of:

a) The user equipment in the idle state selects a new cell, and sends a message to the controlling radio unit controller where it is located;

b) If the cell belongs to the same controlling radio unit controller, the controlling radio unit controller directly deletes the corresponding user equipment identifier;

c) If they do not belong to the same controlling radio unit controller, the new controlling radio unit controller sends a message to the old controlling radio unit controller to update the MBMS context;

d) The old controlling radio unit controller sends a message to the new controlling radio unit controller, reporting that the update of the MBMS context is completed;

e) The new control radio unit controller sends a message to the user equipment to report that the cell update is completed.

According to another aspect of the present invention, the method for updating the MBMS context in the controller of the wireless unit includes the steps of:

f) The user equipment in the idle state selects a new cell and sends a message to the controlling radio unit controller where it is located;

g) If the cell belongs to the same controlling radio unit controller, the controlling radio unit controller directly deletes the corresponding user equipment identifier;

h) If they do not belong to the same controlling radio unit controller, the new controlling radio unit controller sends a message to the SGSN requesting to relocate the controlling radio unit controller.

According to another aspect of the present invention, a method for low-latency updating an MBMS context in a control radio unit controller, comprising the steps of:

a) The user equipment in the idle state selects a new cell, and sends a message to the controlling radio unit controller where it is located;

b) The new control radio unit controller sends a message to the user equipment to report that the update of the cell is completed;

c) The message includes radio bearer information;

d) If the cell belongs to the same controlling radio unit controller, the controlling radio unit controller directly deletes the user equipment identification corresponding to the cell identification and the service identification;

e) If they do not belong to the same controlling radio unit controller, the new controlling radio unit controller sends a message to the old controlling radio unit controller to update the MBMS context;

f) the old control radio unit controller deletes the user equipment identification corresponding to the cell identification and the service identification;

The old controlling radio unit controller sends a message to the new controlling radio unit controller, reporting that the update of the MBMS context is completed.

According to another aspect of the present invention, a method for low-latency updating an MBMS context in a control radio unit controller, comprising the steps of:

g) The user equipment in the idle state selects a new cell and sends a message to the controlling radio unit controller where it is located;

h) The message carries the control radio unit controller ID, the cell ID, the service ID and the user equipment ID;

i) The new control radio unit controller sends a message to the user equipment, reporting that the update of the cell is completed;

j) The message includes radio bearer information;

k) If the cell belongs to the same controlling radio unit controller, the controlling radio unit controller directly deletes the user equipment identification corresponding to the cell identification and the service identification;

l) If they do not belong to the same controlling radio unit controller, the new controlling radio unit controller sends a message to the SGSN requesting to relocate the controlling radio unit controller.

The invention solves the problem that the MBMS context controlling the wireless unit controller cannot be updated when the user equipment leaves the cell in the idle state. By updating the context, the mobility of the user can be effectively managed, and radio resources can be used more reasonably.

Description of drawings

Fig. 1 is a signaling flow of updating the context of the control radio unit controller through the Iur interface.

Fig. 2 is a signaling flow for updating the context of the control radio unit controller through the Iu interface.

Fig. 3 is a signaling flow of updating and controlling the context of the wireless unit controller through the Iur interface with low delay.

Fig. 4 is a signaling flow of updating the context of the control radio unit controller through the Iu interface with low delay.

Figure 5 is a logical network device diagram of the MBMS service

Figure 6 is the MBMS multicast service flow

Figure 7 is a flowchart of MBMS context update

Detailed ways

1) Control the wireless unit controller context update process through the Iur interface

When the user equipment selects a new cell, the user equipment sends a cell update request to the controlling radio unit controller where the new cell is located, and the message includes the old controlling radio unit controller ID, the old cell ID, the MBMS service ID and the user equipment ID . If the ID of the controlling radio unit controller is the same as the ID of the controlling radio unit controller where the new cell is located, the identification cell selection takes place within the controlling radio unit controller. The controlling radio unit controller will update the MBMS context of the corresponding new cell and the context of the old cell, and delete the corresponding user equipment identifier in the MBMS context of the old cell. If the ID of the controlling radio unit controller is different from the ID of the controlling radio unit controller where the new cell is located, the new controlling radio unit controller knows the controlling radio unit controller and the cell where the UE was located before. The new controlling radio unit controller sends a message to the old controlling radio unit controller, notifying the old controlling radio unit controller that the user equipment has moved out, and its user equipment identifier can be deleted from the context.

2) Control the wireless unit controller context update process through the Iu interface

When the user equipment selects a new cell, the user equipment sends a cell update request to the controlling radio unit controller where the new cell is located, and the message includes the old controlling radio unit controller ID, the old cell ID, the MBMS service ID and the user equipment ID . If the ID of the controlling radio unit controller is the same as the ID of the controlling radio unit controller where the new cell is located, the identification cell selection takes place within the controlling radio unit controller. The controlling radio unit controller will update the MBMS context of the corresponding new cell and the context of the old cell, and delete the corresponding user equipment identifier in the MBMS context of the old cell. If the ID of the controlling radio unit controller is different from the ID of the controlling radio unit controller where the new cell is located, the new controlling radio unit controller sends a message to the SGSN to which it belongs, informing it of the ID of the controlling radio unit controller of the old cell to which the user equipment belongs and Community ID. The SGSN will judge whether the controlling radio unit controller is within its own control range or under the control of another SGSN according to the controlling radio unit controller identifier. If it is controlled by the same SGSN, then the SGSN will request the controlling radio unit controller to relocate the user equipment, update the context in the old controlling radio unit controller, and delete the user equipment identifier. If not under the control of the same SGSN, the old SGSN is the SGSN to which the old controlling radio unit controller belongs. The new SGSN requests the old SGSN to relocate the radio unit controller of the user equipment, and the old SGSN responds to the new SGSN after completing the relocation of the radio unit controller. Thus, the process of controlling the context update of the wireless unit controller is completed.

3) Control the wireless unit controller context update process through the low-latency Iur interface

When the user equipment selects a new cell, the user equipment sends a cell update request to the controlling radio unit controller where the new cell is located, and the message includes the old controlling radio unit controller ID, the old cell ID, the MBMS service ID and the user equipment ID . The radio unit controller is controlled to send the radio bearer information of the new cell to the user equipment at this time. If the ID of the controlling radio unit controller is the same as the ID of the controlling radio unit controller where the new cell is located, the identification cell selection takes place within the controlling radio unit controller. The controlling radio unit controller will update the MBMS context of the corresponding new cell and the context of the old cell, and delete the corresponding user equipment identifier in the MBMS context of the old cell. If the ID of the controlling radio unit controller is different from the ID of the controlling radio unit controller where the new cell is located, the new controlling radio unit controller knows the controlling radio unit controller and the cell where the UE was located before. The new controlling radio unit controller sends a message to the old controlling radio unit controller, notifying the old controlling radio unit controller that the user equipment has moved out, and its user equipment identifier can be deleted from the context.

4) Control the wireless unit controller context update process through the Iu interface

When the user equipment selects a new cell, the user equipment sends a cell update request to the controlling radio unit controller where the new cell is located, and the message includes the old controlling radio unit controller ID, the old cell ID, the MBMS service ID and the user equipment ID . The radio unit controller is controlled to send the radio bearer information of the new cell to the user equipment at this time. If the ID of the controlling radio unit controller is the same as the ID of the controlling radio unit controller where the new cell is located, the identification cell selection takes place within the controlling radio unit controller. The controlling radio unit controller will update the MBMS context of the corresponding new cell and the context of the old cell, and delete the corresponding user equipment identifier in the MBMS context of the old cell. If the ID of the controlling radio unit controller is different from the ID of the controlling radio unit controller where the new cell is located, the new controlling radio unit controller sends a message to the SGSN to which it belongs, informing it of the ID of the controlling radio unit controller of the old cell to which the user equipment belongs and Community ID. The SGSN will judge whether the controlling radio unit controller is within its own control range or under the control of another SGSN according to the controlling radio unit controller identifier. If it is controlled by the same SGSN, then the SGSN will request the controlling radio unit controller to relocate the user equipment, update the context in the old controlling radio unit controller, and delete the user equipment identifier. If not under the control of the same SGSN, the old SGSN is the SGSN to which the old controlling radio unit controller belongs. The new SGSN requests the old SGSN to relocate the radio unit controller of the user equipment, and the old SGSN responds to the new SGSN after completing the relocation of the radio unit controller. Thus, the process of controlling the context update of the wireless unit controller is completed.

5) New cell update message

When the user equipment selects a new cell, the cell update message sent carries the RNC ID, the cell ID and the service ID. The identity of the old control radio unit controller refers to the identity of the RNC where the cell where the user equipment originally resides is located. The cell identity refers to the identity of the cell where the user equipment is originally located. The service identifier refers to the MBMS service identifier received by the user equipment in the original cell.

6) Control the relocation request and response message of the wireless unit controller

The new controlling radio unit controller requests the SGSN to perform a relocation request, and sends an MBMS controlling radio unit controller relocation request message, which contains the RNC identifier and the context container.

The context container includes a cell ID, a service ID and a user equipment ID. The RNC identifier is included in the MBMS Control Radio Unit Controller Relocation Response message.

7) Context transfer request, response message

When the new SGSN requests the old SGSN to perform context transfer, it sends an MBMS context transfer request message, which contains the context container. The container includes a cell ID, a service ID and a user equipment ID. The context container information can be carried in the response message.

8) Relocation execution, completion message

When the SGSN requests the controlling radio unit controller to perform relocation, it sends the MBMS controlling radio unit controller relocation execution message, which carries the context container. The container includes a cell ID, a service ID and a user equipment ID. The context container information may be carried in the relocation complete message.

The process of the present invention will be described in detail below in conjunction with the accompanying drawings.

1) Figure 1 is a signaling flow for updating the context of the control wireless unit controller through the Iur interface. After the user equipment in the idle state reselects a cell, it sends an MBMS cell update message to the controlling radio unit controller where the new cell is located, and the message includes RNC ID, cell ID, service ID and user equipment ID. When the radio control unit controller receives the request, it first judges whether the RNC identity is consistent with its own identity. If so, the radio unit controller is controlled to directly delete the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send the MBMS cell update complete message to the user equipment, which contains the radio bearer information of the new cell. If the RNC ID is inconsistent with the ID of the new controlling radio unit controller, then the new controlling radio unit controller sends an MBMS context update request to the controlling radio unit controller marked with the RNC ID, including cell ID, service ID and user equipment ID . After receiving the message, the radio control unit controller directly deletes the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send an MBMS context update response to the new controlling radio unit controller, including the service identifier and the user equipment. After receiving the message, the new controlling radio unit controller knows that the context update has been completed in the old controlling radio unit controller, and thus notifies the user equipment of the radio bearer for this service in the new cell.

2) Figure 2 is a signaling flow for updating the context of the control radio unit controller through the Iu interface. After the user equipment in the idle state reselects a cell, it sends an MBMS cell update message to the controlling radio unit controller where the new cell is located, and the message includes RNC ID, cell ID, service ID and user equipment ID. When the radio control unit controller receives the request, it first judges whether the RNC identity is consistent with its own identity. If so, the radio unit controller is controlled to directly delete the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send the MBMS cell update complete message to the user equipment, which contains the radio bearer information of the new cell. If the RNC ID is inconsistent with the ID of the new RNC, the new RNC will request the SGSN to which it belongs to perform RNC relocation by sending an MBMS RNC relocation request, and the message includes the RNC ID and context container. The cell ID, service ID and user equipment ID are packaged together in the context container. When the SGSN receives this message, it will judge whether the controlling radio unit controller identified by the RNC is within its control range. If yes, the SGSN will send the MBMS controlling radio unit controller relocation execution message to the old controlling radio unit controller. Contains the context container. After receiving the message, the old control radio unit controller deletes the user equipment identifier on the basis of the service identifier according to the information elements contained in the context container, and sends MBMS control radio unit controller relocation completion to the SGSN as a response. The message can Contains the context container. After receiving the response message, the SGSN notifies the new controlling radio unit that the relocation of the controller has been completed. The new controlling radio unit controller may send an MBMS cell update acknowledgment to the user equipment, which includes radio bearer information. After receiving the radio bearer information of the new cell, the user equipment can receive the MBMS service in the new cell.

3) Fig. 3 is a signaling flow of updating the context of the control radio unit controller through the Iu interface with low delay. After the user equipment in the idle state reselects a cell, it sends an MBMS cell update message to the controlling radio unit controller where the new cell is located, and the message includes RNC ID, cell ID, service ID and user equipment ID. The controlling radio unit controller may send an MBMS cell update confirmation message to the user equipment after receiving the MBMS cell update message of the user equipment, and the message includes radio bearer information. When the radio control unit controller receives the request, it first judges whether the RNC identity is consistent with its own identity. If so, the radio unit controller is controlled to directly delete the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send the MBMS cell update complete message to the user equipment, which contains the radio bearer information of the new cell. If the RNC ID is inconsistent with the ID of the new RNC, the new RNC will request the SGSN to which it belongs to perform RNC relocation by sending an MBMS RNC relocation request, and the message includes the RNC ID and context container. The cell ID, service ID and user equipment ID are packaged together in the context container. When the SGSN receives this message, it will judge whether the controlling radio unit controller identified by the RNC is within its control range. If yes, the SGSN will send the MBMS controlling radio unit controller relocation execution message to the old controlling radio unit controller. Contains the context container. After receiving the message, the old control radio unit controller deletes the user equipment identifier on the basis of the service identifier according to the information elements contained in the context container, and sends MBMS control radio unit controller relocation completion to the SGSN as a response. The message can Contains the context container. After receiving the response message, the SGSN notifies the new controlling radio unit that the relocation of the controller has been completed.

4) Fig. 4 is a signaling process for updating the context of the control wireless unit controller through the Iur interface with low delay. After the user equipment in the idle state reselects a cell, it sends an MBMS cell update message to the controlling radio unit controller where the new cell is located, and the message includes RNC ID, cell ID, service ID and user equipment ID. The controlling radio unit controller may send an MBMS cell update confirmation message to the user equipment after receiving the MBMS cell update message of the user equipment, and the message includes radio bearer information. When the radio control unit controller receives the request, it first judges whether the RNC identity is consistent with its own identity. If so, the radio unit controller is controlled to directly delete the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send the MBMS cell update complete message to the user equipment, which contains the radio bearer information of the new cell. If the RNC ID is inconsistent with the ID of the new controlling radio unit controller, then the new controlling radio unit controller sends an MBMS context update request to the controlling radio unit controller marked with the RNC ID, including cell ID, service ID and user equipment ID . After receiving the message, the radio control unit controller directly deletes the user equipment identifier in the context corresponding to the cell on the basis of the service identifier. Then send an MBMS context update response to the new controlling radio unit controller, including the service identifier and the user equipment. After receiving the message, the new controlling radio unit controller knows that the update of the context has been completed in the old controlling radio unit controller.

Claims (33)

1. control the contextual update method of MBMS in the radio-cell controller for one kind, comprise step:

A) subscriber equipment that is in idle condition is chosen a new sub-district, and the control radio-cell controller to its place sends message;

B), then control the directly wherein corresponding customer equipment identification of deletion of radio-cell controller if this sub-district belongs to same control radio-cell controller;

C), then newly control the radio-cell controller and send message, update MBMS context to old control radio-cell controller if do not belong to same control radio-cell controller;

D) old control radio-cell controller sends message to new control radio-cell controller, and report MBMS updating context is finished;

E) newly control the radio-cell controller and send message to subscriber equipment, reporting cell upgrades to be finished.

2. method according to claim 1 is characterized in that newly controlling the radio-cell controller and sends message to subscriber equipment, and reporting cell upgrades in the message of finishing and comprises radio bearer information.

3. method according to claim 1 is characterized in that being mail in the message of control radio-cell controller by subscriber equipment and carries control radio-cell controller identifier, cell ID, service identification and customer equipment identification.

4. method according to claim 1 is characterized in that carrying cell ID, service identification and customer equipment identification by new control radio-cell controller in the message that old control radio-cell controller sends.

5. method according to claim 1 is characterized in that carrying service identification and customer equipment identification by old control radio-cell controller in the message that new control radio-cell controller sends.

6. method according to claim 1 is characterized in that sending message at old control radio-cell controller to new control radio-cell controller, and deletion was corresponding to the customer equipment identification of cell ID and service identification when report MBMS updating context was finished.

7. one kind is upgraded the contextual method of MBMS in the control radio-cell controller, comprises step:

A) subscriber equipment that is in idle condition is chosen a new sub-district, and the control radio-cell controller to its place sends message;

B), then control the directly wherein corresponding customer equipment identification of deletion of radio-cell controller if this sub-district belongs to same control radio-cell controller;

C) if do not belong to same control radio-cell controller, then newly control the radio-cell controller and send message, request reorientation control radio-cell controller to SGSN.

8. method according to claim 7 is characterized in that also comprising step:

If two control radio-cell controllers belong to same SGSN, then SGSN sends message to old control radio-cell controller, and the reorientation of control radio-cell controller is carried out in request; The deletion of control radio-cell controller is corresponding to the customer equipment identification of cell ID and service identification;

Old control radio-cell controller sends message to SGSN, and the reorientation of report control radio-cell controller is finished;

SGSN sends response message to new control radio-cell controller, informs that controlling the reorientation of radio-cell controller finishes;

New control radio-cell controller sends message to subscriber equipment, and reporting cell upgrades to be finished.

9. method according to claim 7 is characterized in that also comprising step:

If two control radio-cell controllers do not belong to same SGSN, the old SGSN of then new SGSN to old RNC place sends message;

Old SGSN sends message to old control radio-cell controller, and the reorientation of control radio-cell controller is carried out in request;

Old control radio-cell controller deletion is corresponding to the customer equipment identification of cell ID and service identification;

Old control radio-cell controller sends message to old SGSN, and the reorientation of report control radio-cell controller is finished;

Old SGSN sends message to new SGSN, and report MBMS context transfer is finished;

SGSN sends response message to new control radio-cell controller, informs that controlling the reorientation of radio-cell controller finishes;

New control radio-cell controller sends message to subscriber equipment, and reporting cell upgrades to be finished.

10. according to Claim 8 or 9 described methods, it is characterized in that described reporting cell upgrades in the message of finishing comprises radio bearer information.

11. method according to claim 7 is characterized in that being mail in the message of control radio-cell controller by subscriber equipment and carries control radio-cell controller identifier, cell ID, service identification and customer equipment identification.

12. method according to claim 7 is characterized in that carrying RNC sign and context container by new control radio-cell controller in the message that SGSN sends.

13. method according to claim 7 is characterized in that carrying RNC sign, context container by new SGSN in the message that old SGSN sends.

14. method according to claim 7 is characterized in that carrying the context container by SGSN in the message that old control radio-cell controller sends.

15. method according to claim 7 is characterized in that carrying the context container by old control radio-cell controller in the message that SGSN sends.

16. method according to claim 7 is characterized in that carrying the context container by old SGSN in the message that new SGSN sends.

17. method according to claim 7 is characterized in that carrying the RNC sign by SGSN in the message that new control radio-cell controller sends.

18. method according to claim 7 is characterized in that comprising cell ID in the described context container, service identification and customer equipment identification.

19. one kind low time delay is upgraded the contextual method of MBMS in the control radio-cell controller, comprises step:

A) subscriber equipment that is in idle condition is chosen a new sub-district, and the control radio-cell controller to its place sends message;

B) newly control the radio-cell controller and send message to subscriber equipment, reporting cell upgrades to be finished;

C) comprise radio bearer information in this message;

D) if this sub-district belongs to same control radio-cell controller, then control the radio-cell controller directly deletion wherein corresponding to the customer equipment identification of cell ID and service identification;

E), then newly control the radio-cell controller and send message, update MBMS context to old control radio-cell controller if do not belong to same control radio-cell controller;

F) old control radio-cell controller deletion is corresponding to the customer equipment identification of cell ID and service identification;

G) old control radio-cell controller sends message to new control radio-cell controller, and report MBMS updating context is finished.

20. method according to claim 19 is characterized in that being mail in the message of control radio-cell controller by subscriber equipment and carries control radio-cell controller identifier, cell ID, service identification and customer equipment identification.

21. method according to claim 19 is characterized in that carrying cell ID, service identification and customer equipment identification by new control radio-cell controller in the message that old control radio-cell controller sends.

22. method according to claim 19 is characterized in that carrying service identification and customer equipment identification by old control radio-cell controller in the message that new control radio-cell controller sends.

23. one kind low time delay is upgraded the contextual method of MBMS in the control radio-cell controller, comprises step:

A) subscriber equipment that is in idle condition is chosen a new sub-district, and the control radio-cell controller to its place sends message;

B) carry control radio-cell controller identifier, cell ID, service identification and customer equipment identification in this message;

C) newly control the radio-cell controller and send message to subscriber equipment, reporting cell upgrades to be finished;

D) comprise radio bearer information in this message;

E) if this sub-district belongs to same control radio-cell controller, then control the radio-cell controller directly deletion wherein corresponding to the customer equipment identification of cell ID and service identification;

F) if do not belong to same control radio-cell controller, then newly control the radio-cell controller and send message, request reorientation control radio-cell controller to SGSN.

24. method according to claim 23 is characterized in that also comprising step:

If two control radio-cell controllers belong to same SGSN, then SGSN sends message to old control radio-cell controller, and the reorientation of control radio-cell controller is carried out in request;

Old control radio-cell controller deletion is corresponding to the customer equipment identification of cell ID and service identification;

Old control radio-cell controller sends message to SGSN, and the reorientation of report control radio-cell controller is finished;

SGSN sends response message to new control radio-cell controller, informs that controlling the reorientation of radio-cell controller finishes;

25. method according to claim 23 is characterized in that also comprising step:

If two control radio-cell controllers do not belong to same SGSN, the old SGSN of then new SGSN to old RNC place sends message;

Old SGSN sends message to old control radio-cell controller, and the reorientation of control radio-cell controller is carried out in request;

Old control radio-cell controller deletion is corresponding to the customer equipment identification of cell ID and service identification;

Old control radio-cell controller sends message to old SGSN, and the reorientation of report control radio-cell controller is finished;

Old SGSN sends message to new SGSN, and report MBMS context transfer is finished;

SGSN sends response message to new control radio-cell controller, informs that controlling the reorientation of radio-cell controller finishes.

26. method according to claim 23 is characterized in that being mail in the message of control radio-cell controller by subscriber equipment and carries control radio-cell controller identifier, cell ID, service identification and customer equipment identification.

27. method according to claim 23 is characterized in that carrying RNC sign and context container by new control radio-cell controller in the message that SGSN sends.

28. method according to claim 23 is characterized in that carrying RNC sign, context container by new SGSN in the message that old SGSN sends.

29. method according to claim 23 is characterized in that carrying the context container by SGSN in the message that old control radio-cell controller sends.

30. method according to claim 23 is characterized in that carrying the context container by old control radio-cell controller in the message that SGSN sends.

31. method according to claim 23 is characterized in that carrying the context container by old SGSN in the message that new SGSN sends.

32. method according to claim 23 is characterized in that carrying the RNC sign by SGSN in the message that new control radio-cell controller sends.

33. method according to claim 23 is characterized in that comprising cell ID in the context container service identification and customer equipment identification.

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