WO2006015554A1 - A method of receiving multi-services at the same time - Google Patents

Abstract

A method of receiving multi-services at the same time includes steps: a. The user equipment (UE) which is receiving services receives the multimedia broadcast and multicast service (MBMS) announcement message and estimates whether it can receive the new MBMS service and current service the same time. If yes, then executes step c.; if no, then executes step b.; b. Re-configs the wireless resources, and got a step c.; c. Receives the new MBMS service data while receiving current service. The method of the invention makes the UE receive current service and the new MBMS service at the same time and minish the influence of receiving multi-services.

Description

 A party that receives multiple services at the same time

Technical field

 The present invention relates to a service receiving technology, and more particularly to a method capable of receiving multiple services simultaneously. Background of the invention

 Multicast and broadcast are technologies for transmitting data from one data source to multiple targets. In traditional mobile networks, Cell Broadcast Service (CBS) allows low bit rate data to be sent to all users through a cell shared broadcast channel. Message business.

 At present, the demand for mobile communication is no longer satisfied with the telephone and message services. With the rapid development of the Internet, a large number of multimedia services have emerged. Some of the application services require multiple users to receive the same data at the same time, such as: video on demand, Television broadcasting, video conferencing, online education, interactive games, etc., these mobile multimedia services have the characteristics of large amount of data, long duration, and delay sensitivity compared with general data. Existing IP multicast technology is only applicable to wired IP networks, but not to mobile networks, because mobile networks have specific network structures, functional entities, and wireless interfaces, which are different from wired IP networks.

 In order to effectively utilize mobile network resources, WCDMA/GSM Global Standards Organization 3GPP proposes a Multimedia Broadcast/Multicast Service (MBMS) service, which provides a point in the mobile network where data sources send data to multiple users. To multi-point services, realize network resource sharing, and improve the utilization of network resources, especially air interface resources. MBMS defined by 3GPP can not only realize plain-text low-rate message-like multicast and broadcast, but also realize multicast and broadcast of high-speed multimedia services, which undoubtedly conforms to the trend of future mobile data development.

FIG. 1 is a schematic diagram of a structure of a wireless network supporting broadcast/multicast services. As shown in FIG. 1 , in a conventional 3GPP, a wireless network entity supporting a broadcast/multicast service is a broadcast/multicast service server (BM-SC) 101. BM-SC 101 communicates with GPRS support node via Gmb interface or Gi interface (GGSN, Gateway GPRS Support Node) 102 connected to one BM-SC 101 can be connected to multiple GGSNs 102; GGSN 102 through Gn/Gp interface and serving GPRS support nodes

(SGSN, Serving GPRS Support Node) 103 is connected, one GGSN 102 can be connected to multiple SGSNs 103; SGSN 103 can be connected to Universal Mobile Telecommunications System (UT TS) Terrestrial Radio Access Network (UTRAN) 104 via Iu interface, and then UTRAN 104 is connected to a user terminal (UE) 106 through a Uu interface, and the SGSN 103 can also communicate with the global mobile communication system through the Iu/Gb interface.

The (GSM) Enhanced Radio Access Network (GERAN) 105 is connected, and then the GERAN 105 is connected to the UE 107 via the Um interface.

 It can be seen from the network structure shown in FIG. 1 that in order to support the MBMS service, a mobile network functional entity broadcast multicast service center, that is, a BM-SC, is added to the third generation mobile communication system, and the BM-SC provides content. The entry of the user is used to authorize and initiate the MBMS bearer service in the mobile network, and deliver the MBMS content according to a predetermined time schedule. In addition, MBMS-related functions are added to functional entities such as UE, UTRAN, GERAN, SGSN, and GGSN.

 The MBMS includes a multicast mode and a broadcast mode. The multicast mode requires the user to subscribe to the corresponding multicast group, perform service activation, and generate corresponding charging information. As the multicast mode and the broadcast mode are different in service requirements, the respective service processes are different. As shown in Figure 2 and Figure 3, Figure 2 is a schematic diagram of the service flow of the MSMS multicast mode, and Figure 3 is the MSMS broadcast mode. Schematic diagram of business process.

As shown in Figure 2, the MBMS multicast service involves the following procedures: subscription, service announcement, user join, session open: 1⁄2 (Session Start), MBMS notification ( MBMS notification ), Data transfer, Session Stop, and Leaving. The sign-off process is used to allow the user to subscribe to the required MBMS service in advance; the service announcement process is used to announce the currently available service by the BM-SC; the user join process is the MBMS multicast service activation process, and the UE is notified during the joining process. The network itself is willing to be a member of the current multicast group and receive the multicast data of the corresponding service. The joining process creates an MBMS UE context for recording the UE information in the network and the UE joining the multicast group. During the start of the session, the BM-SC prepares the data transmission, notifying the network to establish the bearer resources of the corresponding core network and the access network; the MBMS notification process is used to notify the UE that the MBMS multicast session is about to start; during the data transmission process, the BM-SC The data is transmitted to the UE through the bearer resources established during the start of the session. The MBMS service has two modes when transmitting between the UTRAN and the UE: point-to-multipoint (PTM) mode and point-to-point (PTP) mode, and the PTM mode passes the MTCH logical channel. Send the same data, all UEs that join the multicast service or are interested in the broadcast service can receive, PTP mode sends data through the DTCH logical channel, only the corresponding one UE can receive; the session end process is used to establish the session start process The bearer resource is released; the user exit process causes the subscribers in the group to leave the multicast group, that is, the user no longer receives the multicast data, and the process deletes the corresponding MBMS UE context.

 As shown in FIG. 3, the MBMS broadcast service involves a process similar to the MBMS multicast service, except that the subscription process and the user join process need not be performed before the session starts, and after the session ends, the user exit process does not need to be performed.

 As can be seen from Figure 2, in the MBMS multicast service flow, the two processes of user join and session start are independent of each other, that is, one user may join a multicast service before the session starts, or may be in a session. A multicast service is added during the start of the session.

 For the state in which the UE is located, in the current mobile communication system, the UE may be classified into an idle (Idle) mode and an RRC connected (R C Connected) mode according to whether a radio resource control (RRC) connection is established. The UE that has not established an RRC connection with the UTRAN device is in the Idle mode, and the UE in this mode can only be distinguished by the identifier of the non-access stratum (NAS), such as the IMSI; the UE that has established the RRC connection with the UTRAN device is in the RRC Connected Mode, the UE in this mode allocates a Radio Network Temporary Identity (RNTI) as an identifier of the UE on a common transport channel.

For the UE in the RRC Connected mode, the UE is further divided into different states according to the level of the RC connection and the type of the transport channel that the UE can use: CELL—PCH state, CELL_FACH state, CELL—DCH state, and URA—PCH state, where the former Three states The UEs can be distinguished at the cell level, and the UEs in the URA_PCH state can be distinguished at the UTRAN Registration Area (URA) level. A UE in the CELL-DCH state is assigned a dedicated physical channel, and a dedicated transport channel or a shared channel and a combination thereof may be used. The CELL-FACH state UE continuously monitors a common transport channel (FACH) on the downlink and the default common channel (RACH) on the uplink. The UEs in the CELL_PCH and URA_PCH states use a discontinuous reception (DRX) mode to monitor a paging channel (PCH) through the associated PICH channel, and there is no uplink activity in either state.

 Generally, UEs that join the MBMS service before the start of the session and during the session have different processing according to the UE mode and state. Meanwhile, UEs in different states have different wireless access capabilities. However, whether the session start process starts after the user joins the multicast service, or the user joins the multicast service during the session, the UE with insufficient radio access capability faces the problem of selecting between multiple services.

 Specifically, after the user joins the multicast service and the session start process of the service is started, the following processes are included:

 During the start of the session, when the UTRAN device decides to establish a point-to-multipoint radio bearer, the UTRAN sends a dedicated notification message on the dedicated signaling channel to inform the UE that does not currently receive the CELL-DCH state of the MBMS service transmitted using the PTM mode; The UE that cannot receive the MBMS service in parallel and the CELL_DCH state of the existing active activity notifies the user after receiving the notification message, and the user makes a choice between the ongoing activity and the new MBMS service; if the user decides to receive the new MBMS service The UE will read the MBMS Point-to-Multipoint Control Channel (MCCH) at a predetermined time to obtain MBMS control information; the UE starts receiving the MBMS service according to the received control information.

In the case that the user joins the service in the session of the multicast service, if a session using the PTM transmission mode is in progress, after the user join process is completed, the UE initiates reception of the PTM radio bearer; if the ongoing session is used It is a PTP transmission mode, and the UTRAN establishes a PTP radio bearer. Generally, the process of joining an MBMS service in a session includes the following steps: Step a. The UE in the Idle mode first performs an RRC connection setup if; the UE in the CELL-PCH and URA_PCH states first performs a cell update procedure;

 Step b. Afterwards, the UE initiates a NAS join process;

 Step c. The SGSN notifies the UTRAN that one UE has joined a certain MBMS service, and the UTRAN determines the transmission mode used by the service:

 Cl. If you continue to use the PTM transmission mode, the processing flow is shown in Figure 4:

 The UTRAN sends an MBMS-specific notification message including a service identifier, a cause, and the like on the DCCH to notify the UE in the CELL_DCH state, wherein the reason may be that the session is medium; cl2~cl4. Receive the CELL-DCH status of the notification message. The UE determines whether the new MBMS service and the current service can be received at the same time. If yes, step c5 is performed; if not, the user is notified, and the user selects between the current service and the MBMS service to determine whether to receive the new MBMS service. If the user decides to receive the new MBMS service, step cl5 is performed; otherwise, the current processing flow is ended.

 Cl5. The UE will read the MCCH at a predefined time to obtain MBMS service information and MBMS radio bearer information, and the UE starts to receive PTM radio bearer data according to the obtained MBMS service information and MBMS radio bearer information.

 C2. If the PTP transmission mode is continued, the UTRAN and the UE establish a PTP radio bearer through an appropriate RRC procedure, and the specific processing flow is also shown in FIG.

 It can be seen from the above process that the prior art solution has the following problems: When the radio access capability is insufficient, the UE in the CELL-DCH state needs to select between the current service and the new MBMS service, and may release the current service. Receive new MBMS service; or give up receiving new MBMS service and continue to receive current service. Obviously, the prior art cannot receive multiple services at the same time, thus greatly affecting the user's reception of various services. Summary of the invention

The present invention provides a method for simultaneously receiving multiple services, so that the UE can simultaneously receive the current service. And the new MBMS service, and can reduce the mutual influence of the UE receiving different services.

 A method of receiving multiple services simultaneously, including the following steps:

 After receiving the MBMS notification message, the UE determines whether it can receive the new MBMS service and the current service at the same time. If yes, go to step c; otherwise, go to step b;

 b. Reconfigure the wireless resources, then proceed to step c;

 c. Receive new MBMS service data while receiving the current service.

 Before the step a, the method further comprises: the radio access network transmitting an MBMS dedicated notification message on the dedicated signaling channel of the UE, and the UE receiving the MBMS dedicated notification message.

 In the foregoing solution, the reconfiguring the radio resource in the step b is specifically implemented by: the UE and the network side negotiate to modify the service quality of the service.

 In the foregoing solution, the reconfiguring the radio resource in the step b is specifically implemented by: sending, by the UE, the modify PDP context request to the SGSN to trigger the modification of the radio access bearer by the network side. The modification of the radio access bearer by the triggering network side specifically includes:

 Bll. The UE sends a modify PDP context request to the SGSN;

 Bl2. After receiving the request, the SGSN sends an update PDP context request to the GGSN, and the GGSN returns to update the PDP context response after receiving the request;

 Bl3. After receiving the response, the SGSN modifies the radio access bearer through the interaction between the access network and the UE.

 In the foregoing solution, the reconfiguring the radio resource in the step b is specifically: the UE sends the capability information to the network side to trigger the network side to reconfigure the radio bearer. The re-configuration of the radio bearer by the triggering network side specifically includes:

 B21. The UE sends UE capability information to the radio access network;

 B22. The radio access network confirms that the radio resource used by the UE needs to be reconfigured, and then performs radio bearer reconfiguration on the UE, and reconfigures the radio resource used by the UE.

The method further includes: presetting a radio bearer reconfiguration request message, then step b The reconfiguration of the radio resource is specifically performed by: sending, by the UE, the set radio bearer reconfiguration request to the network side to trigger reconfiguration of the radio bearer by the network side. The re-configuration of the radio bearer by the triggering network side specifically includes:

 B31. The UE sends a preset radio bearer reconfiguration request to the radio access network;

 B22. The radio access network confirms that the radio resource used by the UE needs to be reconfigured, and then performs radio bearer reconfiguration on the UE, and reconfigures the radio resource used by the UE.

 In the foregoing solution, the receiving the new MBMS service data in step c is specifically: the UE reads the MCCH at a predetermined time, obtains the MBMS service information, and the MBMS radio bearer information, and then the UE starts to receive according to the obtained MBMS service information and the MBMS radio bearer information. data.

 In the above solution, before step c, the method further includes:

 Determining whether the UE can receive the new MBMS service and the current service at the same time, if yes, performing step c; otherwise, determining whether the UE receives the new MBMS service, if yes, performing step c; if not, ending the current process . The receiving, by the step c, the new MBMS service data is: the UE reads the MCCH at a predetermined time to obtain the MBMS service information and the MBMS radio bearer information, and then the UE starts to receive data according to the obtained MBMS service information and the MBMS radio bearer information.

The method for receiving multiple services at the same time according to the present invention can make the UE migrate to the CELL-FACH state by reconfiguring the radio resources when the radio access capability of the user equipment in the CELL-DCH state is insufficient. The radio access capability UE can receive multiple services concurrently, and minimize the mutual influence of the UE due to receiving different services. On the other hand, the radio resource management algorithm of the network is more flexible and can provide users with higher quality. Service: When the wireless resources are sufficient, more resources can be allocated when the service is initially established. When more services need to be received, for example: If a new MBMS service is added, the wireless resources can be reconfigured, and the original service is not interrupted. In the case of receiving new business at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

 FIG. 1 is a schematic diagram of a wireless network structure supporting broadcast/multicast services;

 Figure 2 is a schematic diagram of the service flow of the MSMS multicast mode;

 Figure 3 is a schematic diagram of the business process of the MSMS broadcast mode;

 4 is a schematic diagram of a multi-service processing flow in the prior art;

 FIG. 5 is a schematic diagram of a process of receiving multiple services in the present invention; FIG.

 6 is a schematic diagram of an embodiment of reconfiguring a wireless resource according to the present invention;

 7 is a schematic diagram of another embodiment of reconfiguring a wireless resource according to the present invention;

 FIG. 8 is a schematic diagram of still another embodiment of reconfiguring a wireless resource according to the present invention. Mode for carrying out the invention

 Generally, both the MBMS service and the non-MBMS service can be transmitted on the dedicated channel or the common channel. For a certain UE, when there are multiple services at the same time, if the wireless access capability of the UE is insufficient, the two types cannot be received at the same time. Traffic on the channel, but if different services are switched to transmit on the common channel, and the UE is in the CELL-FACH state, and only the service is received from the common channel, the UE can simultaneously receive multiple services. Therefore, the basic idea of the present invention is: by reconfiguring the radio resources, the UE in the CELL-DCH state is migrated to the CELL-FACH state, and the service in which the transport channel is the dedicated channel is switched to the common channel, thereby allowing the UE to wirelessly In the case of insufficient access capability, the current service and the new MBMS service can be received simultaneously.

 The present invention can use the existing message to trigger the process of reconfiguring the radio resource, and can also re-configure the radio resource by introducing a new message requesting the network device to re-adjust the radio resource and explain the reason, for example, because the UE has insufficient radio access capability, for example, : The format of the specific message conforms to the standard because it cannot receive a dedicated physical channel and an auxiliary common physical channel in parallel.

The process of receiving multiple services in the present invention is as shown in FIG. 5, and includes the following steps: Step 501: The UTRAN sends the DCCH on the DCC to the UE in the CELL_DCH state. MBMS-specific notification message for parameters such as service identification, reason, etc. .

 Step 502 503: The UE in the CELL_DCH state receives the MBMS dedicated notification message, and determines whether it can receive the new MBMS service and the current service at the same time. If yes, step 507 is performed; if not, step 504 is performed.

 Steps 504-506: The UTRAN reconfigures the radio resource, and then the UE determines whether it can receive the new MBMS service and the current service at the same time. If it can receive, step 507 is performed; if not, the user is notified, the user is in the current service and A selection is made between the MBMS services to determine whether to receive the new MBMS service. If the user decides to receive the new MBMS service, step 507 is performed; otherwise, the current process flow is ended.

 Here, the reconfiguring the radio resource mainly refers to migrating the UE from the CELL-DCH state to the CELL-FACH state, and switching the service of the transport channel to the dedicated channel to the common channel.

 Step 507: The UE will read the MCCH at a predefined time to obtain MBMS service information and MBMS radio bearer information, and the UE starts to receive data according to the obtained MBMS service information and MBMS radio bearer information.

 In the implementation process of the present invention, the reconfiguring the radio resources in the step 504 has different implementation schemes, and specifically includes: Embodiment 1:

 After receiving the MBMS service-specific notification message, the UE in the CELL_DCH state determines that the radio access capability of the UE is insufficient, and cannot receive the current service and the new MBMS service at the same time, and notifies the non-access stratum of the radio resource management function entity of the UE. The resource management function entity negotiates with the peer entity in SGS to modify the quality of service (QoS) parameters. The detailed process is shown in Figure 6:

 Step 601: The UE sends a modify PDP context request to the SGSN. Modify PDP Context Request

Step 602 603: The SGSN sends an update PDP context request to the GGSN after receiving the request. Update PDP Context Request, the GGSN receives the reply and updates the PDP context response Update PDP Context Response.

 Steps 604 to 605: After receiving the response, the SGSN interacts with the UE through the access network RAN to modify the radio access bearer. After the modification is completed, the SGSN sends a Modify PDP Context Accept to the UE.

 In the process shown in FIG. 6, the request message for modifying the PDP context triggers the modification of the radio access bearer. When the radio bearer that the UE needs to receive is adjusted to the radio access capability range of the UE, the UE can simultaneously receive the current Business and new MBMS business. Here, the operation of the wireless access bearer modification is to migrate the UE from the CELL-DCH state to the CELL-FACH state, and switch the service of the transport channel to the dedicated channel to the common channel.

 If the PDP context tampering fails, the network side sends a Modify PDP Context Reject message to the UE. After receiving the Modify PDP Context Accept message or the Modify PDP Context Reject message, the UE determines whether it can receive the current service and the new one at the same time. The MBMS service, ie: proceeds to step 505. Implementation 2:

 As shown in FIG. 7, when the UE in the CELL-DCH state receives the MBMS service-specific notification message, it determines that its radio access capability is insufficient, and cannot receive the current service and the new MBMS service at the same time, and then sends the UE capability information to the UTRAN, triggering The network side reconfigures the radio bearer.

Steps 701-704: The UE capability information (Capability Information) process is used to notify the network device of the MBMS capability information of the UE. Specifically, the UE sends the UE capability information to the radio access network RAN. If the network device considers that the radio resource used by the UE can be reconfigured, the radio resource is reconfigured through a Radio Bearer Reconfiguration procedure. If the radio access capability of the UE can receive the reconfigured channel including the MBMS service channel in parallel after the radio resource reconfiguration is completed, the UE starts to receive the MBMS service; otherwise, it reports to the user, and the user makes a selection. Here, the UE capability information procedure, wireless How the bearer reconfiguration process is implemented belongs to the prior art.

 Here, the reconfiguring the radio resource is specifically: moving the UE from the CELL_DCH state to the CELL_FACH state, and switching the service of the transport channel to the dedicated channel to the common channel, for example: the downlink transport channel can be switched from the DCH to the FACH. Implementation III:

 The process of reconfiguring the radio resources described in Embodiment 2 can also be redundantly performed by the Transport Channel Reconfiguration process.

 The solution introduces a new message radio bearer reconfiguration request, which is used by the UE to request the network device to reconfigure the radio resource. The message indicates that the radio resource is re-adjusted and the reason is explained because the UE has insufficient radio access capability, for example: a dedicated physical channel and an auxiliary common physical channel cannot be received in parallel.

 As shown in step 801 803 of FIG. 8, the UE sends a radio bearer reconfiguration request to the access network RAN, and the RAN and the UE reconfigure the radio resource by using a radio bearer reconfiguration procedure, for example, the downlink transmission may be performed. The channel is switched from DCH to FACH. If the radio access capability can receive the reconfigured channel including the MBMS traffic channel in parallel after the radio resource reconfiguration is completed, the UE starts to receive the MBMS service; otherwise, it reports to the user, and the user makes a selection.

 After the step of reconfiguring the radio resource is introduced in the present invention, the solution for receiving multiple service processes becomes:

 For the case where the session start process of the service starts after the user joins the MBMS service, the process is:

During the start of the session, when the UTRAN decides to establish a point-to-multipoint radio bearer, the UTRAN sends an MBMS-specific notification message on the dedicated signaling channel to inform the UE that does not currently receive the CELL-DCH state of the MBMS service transmitted using the PTM mode. The UE that cannot receive the MBMS service in parallel and the CELL_DCH state of the already received service receives the notification message. After that, re-configure the radio resource with the network; if the radio resource fails to receive or reconfigure in parallel after reconfiguring the radio resource, notify the user that the user is in the ongoing service and new

A selection is made between the MBMS services; if the user decides to receive the new MBMS service, the UE will read the MCCH to obtain the MBMS control information at a predetermined time; the UE starts to receive the MBMS service according to the received control information.

 For the case where the user joins the service in the session of the MBMS service, if a session using the PTM transmission mode is in progress, after the user join process is completed, the UE initiates reception of the PTM radio bearer; if the ongoing session is used In the PTP transmission mode, the UTRAN establishes a PTP radio bearer. Generally, the process of adding an MBMS service in a session includes the following steps: a. The UE in the Idle mode first performs an RRC connection establishment process; the UE in the CELL-PCH and U A_PCH states first performs a cell update process.

 b,. The UE initiates the NAS join process.

 c,. The SGSN informs the UTRAN that a UE has joined a certain MBMS service, and the UTRAN determines the transmission mode used by the service:

 Cl,. If you continue to use PTM transfer mode:

 The ell'. UTRAN sends an MBMS special notification message including parameters such as service identifier and cause on the DCCH to notify the UE in the CELL_DCH state, wherein the reason may be that the session is medium.

 Cl2, ~cl4,. The CELL-DCH state UE that receives the MBMS-specific notification message, if it can receive the MBMS service and the current service at the same time, perform step cl5; if it cannot simultaneously receive the MBMS service and the current service, negotiate with the network Reconfigure the radio resource. If the MBMS service and the current service can be received at the same time after reconfiguring the radio resource, perform step cl5. If the radio resource fails to receive or reconfigure the radio resource in parallel after reconfiguring the radio resource, notify the user that the user is A choice is made between the current service and the MBMS service; if the user decides to receive the new MBMS service, step cl5 is performed; otherwise, the current process flow is ended.

Here, the reconfiguring the radio resource with the network is specifically: moving the UE from the CELL_DCH state to the CELL_FACH state, and switching the service of the transport channel to the dedicated channel to the public. channel.

 Cl5,. The UE will read the MCCH at a predefined time to obtain the MBMS service information and the MBMS radio bearer information. Thereafter, the UE starts to receive the PTM radio bearer according to the obtained MBMS service information and the MBMS radio bearer information.

 C2,. If the PTP transmission mode is continued, the UTRAN and the UE establish a PTP radio bearer through an appropriate RRC procedure, and the specific processing procedure is similar to the procedure in cl.

 The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim  A method for receiving multiple services at the same time, comprising the steps of: a. After receiving a multimedia broadcast/multicast service MBMS notification message, the user equipment UE receiving the service determines whether it can receive the new MBMS at the same time. Business and current business, if yes, perform step c; otherwise, perform step b;  b. Reconfigure the wireless resources, then proceed to step c;  c Receive new MBMS service data while receiving the current service. 2. The method according to claim 1, wherein before the step _a , the method further comprises: the radio access network transmitting an MBMS dedicated notification message on the dedicated signaling channel of the UE, and the UE receiving the MBMS dedicated notification message.  The method according to claim 1, wherein the reconfiguring the wireless resource in the step b is specifically implemented by: the UE and the network side negotiate to modify the service quality of the service.  The method according to claim 1, wherein the reconfiguring the wireless resource in the step b is specifically implemented by: sending, by the UE, a modify PDP context request to the SGSN to trigger a modification of the wireless access bearer by the network side.  The method according to claim 4, wherein the modifying, by the triggering network side, the modification of the radio access bearer specifically includes:  Bll. The UE sends a modify PDP context request to the SGSN;  Bl2. After receiving the request, the SGSN sends an update PDP context request to the GGSN, and the GGSN returns to update the PDP context response after receiving the request;  Bl3. After receiving the response, the SGSN modifies the radio access bearer through the interaction between the access network and the UE. The method of claim 1, wherein the reconfiguring the radio resource in the step b is: transmitting the capability information of the UE to the network side to trigger the network side to reconfigure the radio bearer. The method according to claim 6, wherein the triggering the network side to reconfigure the radio bearer specifically includes:  B21. The UE sends UE capability information to the radio access network;  B22. The radio access network confirms that the radio resource used by the UE needs to be reconfigured, and then performs radio bearer reconfiguration on the UE, and reconfigures the radio resource used by the UE.  The method according to claim 1, wherein the method further comprises: presetting a radio bearer reconfiguration request message, wherein the reconfiguring the radio resource in step b is: transmitting, by the UE, the set by the UE The radio bearer reconfiguration request triggers reconfiguration of the radio bearer by the network side.  The method according to claim 8, wherein the triggering the network side to reconfigure the radio bearer specifically includes:  B31. The UE sends a preset radio bearer reconfiguration request to the radio access network;  B22. The radio access network confirms that the radio resource used by the UE needs to be reconfigured, and then performs radio bearer reconfiguration on the UE, and reconfigures the radio resource used by the UE.  The method according to any one of claims 1 to 9, wherein the receiving the new MBMS service data in step c is: the UE reads the MCCH at a predetermined time, and obtains the MBMS service information and the MBMS radio bearer information. After that, the UE starts to receive data according to the obtained MBMS service information and the MBMS radio bearer information.  The method according to any one of claims 1 to 9, wherein before step c, the method further comprises:  Determining whether the UE can receive the new MBMS service and the current service at the same time, if yes, performing step c; otherwise, determining whether the UE receives the new MBMS service, if yes, performing step c; if not, ending the current process . The method according to claim 11, wherein the receiving the new MBMS service data in the step c is specifically: the UE reads the MCCH at a predetermined time, obtains the MBMS service information and the MBMS radio bearer information, and then, the UE obtains the information according to the method. MBMS service information and MBMS no Line bearer information begins to receive data