WO2010088838A1

WO2010088838A1 - Method, apparatus and system for establishing radio bearer for mbms bearer service

Info

Publication number: WO2010088838A1
Application number: PCT/CN2009/076273
Authority: WO
Inventors: 余承宇
Original assignee: 华为技术有限公司
Priority date: 2009-02-05
Filing date: 2009-12-30
Publication date: 2010-08-12
Also published as: CN101800938A

Abstract

A method, radio access controller, BM-SC (Broadcast Multicast Service Center) and system for establishing the radio bearer for the MBMS (Multimedia Broadcast Multicast Services) bearer service are disclosed by the present invention, and they belong to the technology field of mobile communication. The method includes: receiving the MBMS session start request message that requests to establish the MBMS bearer service, wherein the message includes MBMS user service information; establishing the radio bearer for the MBMS bearer service requested to be established according to the MBMS user service information. The radio access controller includes a receiving unit and an establishing unit. The BM-SC includes an expanding unit and a transmitting unit. The system includes the radio access controller and the BM-SC. The present invention realizes that the radio access network can allocate suitable radio air interface resources, thus the usage rate of the radio air interface resources is improved, and the demands for the terminal are reduced.

Description

Method, device and system for establishing radio bearer for MBMS bearer service

This application claims priority to Chinese Patent Application No. 200910008499. X, entitled "Method, Apparatus and System for Establishing Radio Bearers for MBMS Bearer Services" on February 5, 2009. The content is incorporated herein by reference.

TECHNICAL FIELD The present invention relates to the field of mobile communications technologies, and in particular, to a method, apparatus, and system for establishing a radio bearer for a multimedia broadcast/multicast bearer service. Background technique

MBMS (Multimedia Broadcast Multicast Services) refers to a point-to-multipoint service in which a data source sends data to multiple terminals. The purpose of introducing MBMS is to realize network resource sharing. The network includes CN (Core Network) and RAN (Radio Access Network) to achieve the same needs for as many resources as possible with as few resources as possible. User terminal service.

The MBMS service can be conceptually divided into two types: MBMS User Service and MBMS Bearer Service. ₀ MBMS user service refers to MBMS specific applications that end users can feel, such as mobile TV and files. Download and more. The MBMS bearer service is a service for providing bearer services for point-to-multipoint transmission of MBMS service data from a BM-SC (Broadcast Multicast Service Center) to multiple terminals. One MBMS user service can be provided by multiple MBMS bearer services, and one MBMS bearer service can also provide services for different MBMS user services.

When multiple MBMS bearer services provide services for one MBMS user service, the multiple MBMS bearer services establish bearer service transmissions in the same area, and the terminal needs to receive from all MBMS bearer services. Data can be used to implement a complete MBMS user service. For example, a television service consisting of separate audio and video, audio is transmitted on one MBMS bearer service, and video is transmitted on another MBMS bearer service, and the terminal can only receive the TV service after all the audio and video are received.

The existing MBMS user service information and the MBMS bearer service information are usually created by the BM-SC. When the MBMS bearer service needs to be established, the MBMS session start process is initiated by the BM-SC, and the MBMS bearer information (such as bearer service identifier, quality of service, etc.) is transmitted to the CN and the RAN through the MBMS session start request message. The received MBMS bearer information is used to establish a bearer channel for the service data transmission. After the MBMS session start process is completed, the RAN allocates a wireless air interface resource for the MBMS bearer service according to the received MBMS bearer information, establishes a radio bearer, and then transmits the radio bearer through the radio bearer. Business data is sent to the terminal.

Due to the introduction of the FLC (frequency layer convergence) function, the radio access network may establish different MBMS bearer services corresponding to the same MBMS user service on different carriers, and receive data of different carriers. The ability to have multiple receivers increases the requirements for the terminal, which limits the scope of application of the MBMS service. Summary of the invention

An aspect of the present invention provides a method, an apparatus, and a system for establishing a radio bearer for an MBMS bearer service, and allocates a radio air interface resource according to the MBMS user service information, establishes a radio bearer, improves utilization of the radio air interface resource, and reduces the pair. Terminal requirements.

An aspect of the present invention discloses a method for establishing a radio bearer for a multimedia broadcast/multicast bearer service, where the method includes:

Receiving an MBMS session start request message requesting to establish a multimedia broadcast/multicast MBMS bearer service, where the MBMS session start request message includes MBMS user service information;

And establishing, according to the MBMS user service information, a wireless bearer for the MBMS bearer service that is requested to be established.

Another aspect of the present invention discloses a radio access controller, where the radio access controller includes: a receiving unit, configured to receive an MBMS session start request message requesting to establish an MBMS bearer service, where the MBMS session start request message includes MBMS user service information;

And an establishing unit, configured to establish a radio bearer for the MBMS bearer service that is requested to be established according to the MBMS user service information included in the message received by the receiving unit.

Another aspect of the present invention discloses a broadcast multicast service center BM-SC, where the BM-SC includes: an extension unit, configured to add an MBMS in a multimedia broadcast/multicast MBMS session start request message requesting to establish an MBMS bearer service. User service information;

And a sending unit, configured to send an MBMS session start request message obtained by the extension unit.

Another aspect of the present invention discloses a system for establishing a radio bearer for an MBMS bearer service, the system including the above radio access controller and BM-SC.

The embodiment of the invention enables the radio access network to allocate appropriate radio air interface resources according to the MBMS user service information, and establish a radio bearer, thereby improving the utilization of the wireless air interface resources and reducing the requirements on the terminal. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some implementations of the present invention. For example, other drawings can be obtained from those skilled in the art without any creative work.

1 is a schematic flowchart of a method for establishing a radio bearer for an MBMS bearer service according to an embodiment of the present invention;

2 is a schematic flowchart of a method for establishing a radio bearer for an MBMS bearer service according to another embodiment of the present invention;

3 is a schematic diagram of an MBMS user service identifier in a TMGI according to another embodiment of the present invention; FIG. 4 is a schematic diagram of a length of setting an MBMS user service identifier according to another embodiment of the present invention; FIG. Method flow for establishing a radio bearer for an MBMS bearer service Schematic diagram

6 is a schematic structural diagram of a radio access controller according to another embodiment of the present invention;

FIG. 7 is a schematic structural diagram of a BM-SC according to another embodiment of the present invention; FIG.

FIG. 8 is a schematic structural diagram of a system for establishing a radio bearer for an MBMS bearer service according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION In the following description, for purposes of illustration and description, reference reference However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known devices, circuits, and methods are omitted so as not to obscure the description of the invention.

The technical solution of the present invention can be applied to various communication systems, for example, GSM, Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA), universal Packet Radio Service (GPRS, General Packet Radio Service), Long Term Evolution (LTE), etc. A mobile terminal (Mobi le Terminal), which may also be called a mobile user (UE), a mobile user equipment, etc., may be performed by using a radio access network (for example, RAN, Radio Access Network) and one or more core networks. Communication, the mobile terminal may be a mobile station, such as a mobile phone (or "cellular" phone) and a computer with a mobile terminal, for example, a mobile device that can be portable, pocket, handheld, computer built, or in-vehicle, Exchange language and/or data with the wireless access network.

Referring to FIG. 1, a schematic flowchart of a method for establishing a wireless bearer for a multimedia broadcast/multicast bearer service according to an embodiment of the present invention may be as follows.

101: Receive an MBMS session start request message requesting to establish a multimedia broadcast/multicast MBMS bearer service, where the MBMS session start request message includes MBMS user service information; 102: Establish a radio bearer for the MBMS bearer service that is requested to be established according to the MBMS user service information.

In the embodiment of the present invention, the MBMS includes MBMS in a conventional mobile communication system, and E-MBMS (Evolved MBMS) in LTE (Long Term Evolution), and MBMS which may evolve in the future.

The foregoing method provided in this embodiment enables the radio access network to allocate an appropriate radio air interface resource according to the MBMS user service information, and establish a radio bearer, thereby improving the utilization rate of the radio air interface resource and reducing the requirement for the terminal. Referring to FIG. 2, a schematic flowchart of a method for establishing a radio bearer for a multimedia broadcast/multicast bearer service according to another embodiment of the present invention may be as follows.

201: The BM-SC sends an MBMS session start request message to the CN, requesting to establish an MBMS bearer service. For example, the MBMS Session Start Request message contains an identifier of the MBMS user service.

In this embodiment, the BM-SC may include the MBMS user service identifier in the MBMS session start request message in any of the following two manners.

Manner 1: The identifier of the MBMS user service is included in a TMGI (Temporary Mobile Group Identity) in the MBMS Session Start Request message.

Generally, the MBMS bearer service identifier (MBMS Service ID) is included in the TMGI, and the BM-SC divides the fixed number of bits in the MBMS bearer service identifier. As the MBMS user service identifier, the MBMS bearer service identifier includes two components: MBMS User service identifier and bearer ID. The bearer identifier is the identifier of the MBMS bearer service that is currently set up for the request. For example, a certain MBMS user service needs to establish eight MBMS bearer services, and the bearer identifiers are ID1 to ID8, and the current request is established to be the third bearer. The ID is ID3. When the MBMS user service identifiers of the multiple MBMS bearer services are the same, it indicates that the multiple MBMS bearer services correspond to the same MBMS user service. For example, the bearer identifiers of the two MBMS bearer services are ID2 and ID3, respectively, and the MBMS user service identifiers are 100, it can be determined that the two MBMS bearer services correspond to the same MBMS user service. Referring to FIG. 3, the TMGI includes multiple types of information, where the MBMS bearer service identifier is a 24-bit bit, and the number of bits of the MBMS user service identifier can be set according to requirements within a range of 24 bits, for example, if it is set to 21 bits, the next 3 bits are bearer identifiers. . When the first 21 bits of the multiple MBMS bearer service identifiers are the same, it indicates that the multiple MBMS bearer services correspond to the same MBMS user service.

When an MBMS bearer service is a service of a different MBMS user service, the MBMS user service identifier in the MBMS bearer service identifier is used to represent the MBMS user service group, and represents all MBMS user services on the MBMS bearer service.

Manner 2: A new field is added to the MBMS session start request message, and the MBMS user service identifier is used to identify the MBMS user service corresponding to the MBMS bearer service that is requested to be established. The MBMS user service identifier is a unique identifier defined by the BM-SC. The length range can be determined according to the actual situation. For example, see Figure 4, set the length to 24bits.

202: After receiving the MBMS session start request message, the CN returns an MBMS session start response message to the BM-SC, and forwards the MBMS session start request message to the RAN.

203: After receiving the MBMS session start request message, the RAN returns an MBMS session start response message to the CN, and allocates a wireless air interface to the MBMS bearer service established by the request according to the identifier of the MBMS user service included in the MBMS session start request message. Resources, establish a wireless bearer.

For example, when only one carrier of the radio access network supports the MBMS service, the MBMS user service corresponding to the MBMS bearer service that is requested to be established is determined according to the identifier of the MBMS user service, and the radio bearer is established according to the MBMS bearer service established by the MBMS user service. .

For example, when the radio access network has multiple carriers supporting the MBMS service, the RAN establishes the MBMS bearer service corresponding to the same MBMS user service on the same carrier, for example, if the MBMS bearer service currently requested is already established. The MBMS user service establishes an MBMS bearer service on the first carrier, and the MBMS bearer service that is currently requested to be established is also established on the first carrier, so that different MBMS bearer services corresponding to the same MBMS user service can be avoided from being allocated differently. The carrier, correspondingly, reduces the requirements for the terminal and does not require the terminal's ability to have multiple receivers. Here is an example of two MBMS bearer services corresponding to one MBMS user service, when there are many When the MBMS bearer services all correspond to the same MBMS user service, the radio access network allocates the same carrier for the multiple MBMS bearer services. For example, if three MBMS bearer services correspond to the same MBMS user service, the radio access network allocates the same carrier for the three MBMS bearer services for transmission.

204: Determine whether the establishment of the radio bearer is successful. If successful, the RAN transmits the MBMS user service corresponding to the MBMS bearer service to the terminal UE by using the established radio bearer; if it fails, the corresponding MBMS is determined according to the identifier of the MBMS user service. User services, and stop using other established MBMS bearer services of the MBMS user service to transmit MBMS user services to the terminal.

For example, one MBMS user service corresponds to five MBMS bearer services, two MBMS bearer services are established, and the two MBMS bearer services are being used to transmit the MBMS user service, and the other three MBMS bearer services are not established yet, due to the current wireless air interface. The resource is tight. When the third MBMS bearer service is established, the radio bearer fails to be established. The radio access network stops using the established two MBMS bearer services to continue to transmit the MBMS user service, thereby avoiding waste of wireless air interface resources.

In this embodiment, the entity that performs resource allocation is a radio access controller in the RAN, such as an RNC, or a NodeB, or an eNodeB. In another embodiment of the present invention, the entity that performs resource allocation may also be an MCE ( Multi-cell multicast coordination entity).

The foregoing method provided by the embodiment of the present invention enables the radio access network to allocate the same carrier for all MBMS bearer services corresponding to the same MBMS user service according to the MBMS user service identifier, so that the requirement for the terminal is reduced when the multi-carrier transmission is performed. It avoids the adverse effect on the quality of MBMS user services when multi-carrier transmission. When the radio bearer fails to be established for the MBMS bearer service that is requested to be established, it is determined that the MBMS bearer service established by the request corresponds to another established MBMS bearer service of the same MBMS user service, and stops using the established MBMS bearer service to transmit the MBMS. The user service is provided to the terminal, and when the wireless air interface resource is tight, the MBMS user service transmission is incomplete and the wireless air interface resource is wasted. Referring to FIG. 5, another embodiment of the present invention provides a schematic flowchart of a method for establishing a radio bearer for a multimedia broadcast/multicast bearer service, which may be as follows. 501: The BM-SC sends an MBMS session start request message to the CN, requesting to establish an MBMS bearer service. For example, the MBMS session start request message includes mapping information of the MBMS bearer service and the MBMS user service.

In this embodiment, the BM-SC may include any one of the following three manners: the mapping information of the MBMS bearer service and the MBMS user service in the MBMS session start request message.

The MBMS session start request message includes the identifier of the MBMS bearer service that is requested to be established and the identifier of all other MBMS bearer services, and all other MBMS bearer services and the MBMS bearer service that is requested to be established correspond to the same MBMS user service.

For example, the TMMS may be used in the form of a list, and the TMGI is included in the MBMS session start request message. Each TMGI includes an identifier of the MBMS bearer service, and the MBMS bearer service identifiers in the multiple TMGIs respectively correspond to All other MBMS bearer services.

For example, the MBMS bearer service that is currently requested to be established is ID3, corresponding to the MBMS user service 1, and the other four MBMS bearer services correspond to the MBMS user service 1, and the bearer identifiers are ID1, ID2, ID4, and ID5, respectively, in the MBMS session. The start request message includes a total of five TMGIs, TMGI3 including the ID3 of the MBMS bearer service currently requested to be established, TMGI1 containing the ID1 of the other MBMS bearer service, TMGI2 including the ID2, TMGI4 including the ID4, and TMGI4 including the ID5. TMGI 5.

Manner 2: The MBMS session start request message includes the identifier of the MBMS bearer service that is to be established and the identifier of the MBMS bearer service to be established after the MBMS bearer service is requested to be established, that is, the form of the unidirectional linked list, and the latter is to be established. The MBMS bearer service corresponds to the same MBMS user service as the MBMS bearer service that is requested to be established.

For example, the TMGI may be adopted, for example, the TMGI of the MBMS bearer service currently requested to be established in the MBMS session start request message, and the Next_TMGI of the MBMS bearer service to be established later. For example, there are six MBMS bearer services, and the bearer identifiers are ID1 to ID6, where ID2, ID3, and ID6 correspond to the same MBMS user service, and when the MBMS bearer service ID2 is requested to be established, the MBMS session start request message is included. Next_TMGI contains ID3, when please When the MBMS bearer service ID3 is established, the Next_TMGI included in the MBMS session start request message includes ID6.

Manner 3: The MBMS session start request message includes an identifier of an established MBMS bearer service before the MBMS bearer service that is requested to be established, an identifier of the MBMS bearer service that is requested to be established, and a to-be-established after the MBMS bearer service that is requested to be established. The identifier of the MBMS bearer service, that is, the form of the doubly linked list, and the MBMS bearer service, the MBMS bearer service to be established, and the MBMS bearer service to be established all correspond to the same MBMS user service.

For example, Prev_TMGI, TMGI, and Next_TMGI may be included in the MBMS Session Start Request message in the form of TMGI. The Prev_TMGI includes the identifier of the previously established MBMS bearer service, and the Next_TMGI includes the identifier of the MBMS bearer service to be established. When there is no established MBMS bearer service before, the MBMS bearer service identifier may not be included in Prev_TMG, and ID = 0 may also be included. For example, there are six MBMS bearer services, and the bearer identifiers are ID1 to ID6, where ID1, ID2, ID3, ID4, and ID6 correspond to the same MBMS user service, and when the MBMS bearer service ID3 is requested to be established, the MBMS session start request is started. The Prev_TMGI contained in the message contains ID2, and the Next_TMGI contains ID4.

502: After receiving the MBMS session start request message, the CN returns an MBMS session start response message to the BM-SC, and sends the MBMS session start request message to the RAN.

503: After receiving the MBMS session start request message, the RAN returns an MBMS session start response message to the CN, and according to the mapping relationship between the MBMS bearer service and the MBMS user service included in the MBMS session start request message, the MBMS established for the request. The bearer service allocates wireless air interface resources and establishes a radio bearer.

In this embodiment, when only one carrier of the radio access network is an MBMS service, the RAN determines the MBMS user service corresponding to the MBMS bearer service that is requested to be established according to the mapping relationship between the MBMS bearer service and the MBMS user service, and according to the MBMS user. The service allocates wireless air interface resources for the MBMS bearer service established by the request, and establishes a bearer.

When the radio access network has multiple carriers to support MBMS services, refer to the description of 203, RAN. The MBMS bearer services corresponding to the same MBMS user service are established on the same carrier.

504: Determine whether the established radio bearer is successful. If successful, the RAN transmits the MBMS user service corresponding to the MBMS bearer service to the terminal UE by using the established radio bearer; if it fails, determining, according to the mapping information of the MBMS user service. The MBMS user service corresponding to the MBMS bearer service established by the request stops the use of other established MBMS bearer services of the MBMS user service to transmit the MBMS user service to the terminal.

The foregoing method provided by the embodiment of the present invention enables the radio access network to allocate the same carrier for all MBMS bearer services corresponding to the same MBMS user service according to the mapping information of the MBMS bearer service and the MBMS user service, so that the multi-carrier transmission is reduced. The requirements for the terminal avoid the adverse effects on the quality of the MBMS user service when multi-carrier transmission is performed. When the radio bearer fails to be established for the MBMS bearer service that is requested to be established, it is determined that the MBMS bearer service established by the request corresponds to another established MBMS bearer service of the same MBMS user service, and stops using the established MBMS bearer service to transmit the MBMS. The user service is provided to the terminal, and when the wireless air interface resource is tight, the MBMS user service transmission is incomplete and the wireless air interface resource is wasted. Referring to FIG. 6, this embodiment provides a radio access controller, including: a receiving unit 601 and an establishing unit 602.

The receiving unit 601 is configured to receive an MBMS session start request message requesting to establish a multimedia broadcast/multicast MBMS bearer service, where the MBMS session start request message includes MBMS user service information.

The establishing unit 602 is configured to establish a radio bearer for the MBMS bearer service that is requested to be established according to the MBMS user service information included in the message received by the receiving unit 601.

The establishing unit 602 specifically includes: determining a subunit and establishing a subunit.

The determining subunit is configured to: according to the MBMS user included in the message received by the receiving unit 601 The service information determines the MBMS user service corresponding to the MBMS bearer service that is requested to be established. The establishing subunit is configured to establish a radio bearer for the MBMS bearer service that is requested to be established according to the MBMS user service determined by the determining unit, and establish different MBMS bearer services of the MBMS user service on the same carrier.

In this embodiment, the MBMS user service information included in the MBMS session start request message is specifically: an identifier of the MBMS user service, or a mapping relationship between the MBMS bearer service and the MBMS user service.

When the MBMS user service information is the identifier of the MBMS user service, the identifier of the MBMS user service may be separately included in the MBMS session start request message in the form of the newly added identifier, or included in the TMGI, for example, the MBMS bearer service that may be the TMGI. Set the MBMS user service ID in the ID.

When the MBMS user service information is a mapping relationship between the MBMS bearer service and the MBMS user service, the mapping relationship may be: an identifier of the MBMS bearer service that is requested to be established, and an identifier of at least one other MBMS bearer service, and the MBMS bearer service that is requested to be established and The at least one other MBMS bearer service corresponds to the same MBMS user service.

The identifier of the at least one other MBMS bearer service may be specifically:

The identifier of all other MBMS bearer services except the MBMS bearer service that is requested to be established in the MBMS bearer service corresponding to the MBMS user service;

Or the identifier of the MBMS bearer service to be established after the MBMS bearer service that is requested to be established in the MBMS bearer service corresponding to the MBMS user service;

Or, in the MBMS bearer service corresponding to the MBMS user service, an identifier of the MBMS bearer service to be established after the MBMS bearer service that is requested to be established, and an established MBMS bearer service before the MBMS bearer service that is requested to be established. Logo.

Further, the foregoing radio access controller may further include: establishing a bearer failure processing unit. The establishing a bearer failure processing unit is configured to: if the radio bearer fails to be established for the MBMS bearer service that is requested to be established, determine, according to the MBMS user service information, the MBMS user service corresponding to the MBMS bearer service that is requested to be established, and stop using the MBMS user. The other established MBMS bearer services of the service transmit MBMS user services to the terminal. In this embodiment, after the radio bearer is successfully established, the radio bearer may establish the MBMS user service corresponding to the MBMS bearer service to the terminal by using the radio bearer established by the establishing unit 602.

In this embodiment, the foregoing radio access controller may be an RNC, or a NodeB, or an eNodeB or an MCE (Multi-Cell Multicast Coordination Entity).

The foregoing radio access controller according to the embodiment of the present invention allocates the same carrier for all MBMS bearer services corresponding to the same MBMS user service according to the identifier of the MBMS user service or the mapping information of the MBMS bearer service and the MBMS user service. When the multi-carrier transmission is reduced, the requirements on the terminal are reduced, and the quality of the MBMS user service is adversely affected when the multi-carrier transmission is avoided. When the radio bearer fails to be established for the MBMS bearer service that is requested to be established, it is determined that the MBMS bearer service established by the request corresponds to another established MBMS bearer service of the same MBMS user service, and stops using the established MBMS bearer service to transmit the MBMS. The user service is provided to the terminal, and when the wireless air interface resource is tight, the MBMS user service transmission is incomplete and the wireless air interface resource is wasted. Referring to FIG. 7, this embodiment provides a broadcast multicast service center BM-SC, including: an extension unit 701 and a sending unit 702.

The extension unit 701 is configured to add MBMS user service information in a multimedia broadcast/multicast MBMS session start request message requesting to establish an MBMS bearer service.

The sending unit 702 is configured to send an MBMS session start request message obtained by the extension unit 701.

The MBMS user service information added by the extension unit 701 is specifically an identifier of the MBMS user service, or mapping information of the MBMS bearer service and the MBMS user service.

When the MBMS user service information is the identifier of the MBMS user service, the identifier of the MBMS user service may be included in the MBMS session start request message, or may be used in the TMGI, for example, The MBMS user service identifier is set in the MBMS bearer service identifier of the TMGI. When the MBMS user service information is the mapping information of the MBMS bearer service and the MBMS user service, the mapping information is specifically: the identifier of the MBMS bearer service that is requested to be established and the identifier of the at least one other MBMS bearer service, the at least one other MBMS bearer. The MBMS bearer service established by the service and the request corresponds to the same MBMS user service. The identifier of the at least one other MBMS bearer service is specifically:

The identifiers of all other MBMS bearer services except the MBMS bearer service that is requested to be established in the MBMS bearer service corresponding to the MBMS user service;

Or, in the MBMS bearer service corresponding to the foregoing MBMS user service, an identifier of the MBMS bearer service to be established after the MBMS bearer service that is requested to be established;

Or, in the MBMS bearer service corresponding to the foregoing MBMS user service, an identifier of the MBMS bearer service to be established after the MBMS bearer service that is requested to be established, and an identifier of the established MBMS bearer service before the MBMS bearer service that is requested to be established. . The description is the same as that in Embodiment 3, and details are not described herein again.

The BM-SC provided by the embodiment of the present invention may send an identifier of an MBMS user service, or mapping information of an MBMS bearer service and an MBMS user service to a core network, and send the information to the radio access network through the core network, so that the radio access network may The radio bearer resource is allocated according to the identifier of the MBMS user service or the mapping information of the MBMS bearer service and the MBMS user service, and the radio bearer resource is set up, thereby improving the utilization of the wireless air interface resource and reducing the requirement for the terminal. Referring to FIG. 8, the embodiment provides a system for establishing a wireless bearer for a multimedia broadcast/multicast bearer service, including: a BM-SC 801 and a radio access controller 802.

The BM-SC 801 is configured to send a multimedia broadcast/multicast MBMS session start request message requesting to establish an MBMS bearer service to the core network, and request, by the core network, to establish an MBMS bearer service, the MBMS session start request message. Contains MBMS user service information;

The radio access controller 802 is configured to receive an MBMS session start request message sent by the core network, and build the MBMS user service information included in the MBMS session start request message. The MBMS bearer service establishes a radio bearer.

The MBMS user service information in the embodiment of the present invention includes the identifier of the MBMS user service or the mapping relationship between the MBMS bearer service and the MBMS user service. For reference, refer to the description of the foregoing method embodiments, and details are not described herein again.

After the radio bearer is successfully established, the radio access controller 802 can use the radio bearer to transmit the MBMS user service to the terminal. If the radio bearer fails to be established, the other MBMS bearer services corresponding to the same MBMS user service can be determined. And the continuation of the use of the established MBMS bearer service to continue to transmit the MBMS user service. For details, refer to the description of the foregoing method embodiment, and details are not described herein again.

In addition, the radio access controller 802 can also allocate the same carrier to multiple MBMS bearer services corresponding to the same MBMS user service, which is the same as described in Embodiments 2 and 3, and is not used here.

The foregoing system provided by the embodiment of the present invention enables the radio access network to allocate an appropriate radio air interface resource and establish a radio bearer according to the identifier of the MBMS user service or the mapping information of the MBMS bearer service and the MBMS user service, thereby improving the wireless air interface resource. Utilization. By allocating the same carrier for all MBMS bearer services corresponding to the same MBMS user service, the requirement for the terminal is reduced when the multi-carrier transmission is performed, and the quality of the MBMS user service is not adversely affected when the multi-carrier transmission is performed. When the radio bearer fails to be established for the MBMS bearer service that is requested to be established, it is determined that the MBMS bearer service established by the request corresponds to another established MBMS bearer service of the same MBMS user service, and stops using the established MBMS bearer service to transmit the MBMS. The user service is provided to the terminal, and when the wireless air interface resource is tight, the MBMS user service transmission is incomplete and the wireless air interface resource is wasted.

A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus a necessary general hardware platform, and of course, through hardware. But in many cases the former is a better implementation. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a storage medium, including a plurality of instructions for making a The computer device (which may be a personal computer, server, or network device, etc.) performs all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a medium that can store program codes, such as a USB flash drive, a removable hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

In the several embodiments provided herein, it is to be understood that the disclosed systems, devices, and methods may be implemented in other ways without departing from the spirit and scope of the application. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. The units described as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. . Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment. Those of ordinary skill in the art can understand and implement without undue creative labor.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function unit. The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may also be stored in a computer readable storage medium.

In addition, the described systems, devices, and methods, and the schematic diagrams of various embodiments, may be combined or integrated with other systems, units, techniques or methods without departing from the scope of the present application. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form. The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical scope disclosed by the embodiments of the present invention. All should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request

A method for establishing a radio bearer for a multimedia broadcast/multicast MBMS bearer service, the method comprising:

Receiving an MBMS session start request message requesting to establish an MBMS bearer service, where the MBMS session start request message includes MBMS user service information;

The method according to claim 1, wherein the establishing a radio bearer for the MBMS bearer service that is requested to be established according to the MBMS user service information includes:

Determining, according to the MBMS user service information, an MBMS user service corresponding to the MBMS bearer service that is requested to be established;

And establishing, by the MBMS user service, a radio bearer for the MBMS bearer service that is requested to be established, and establishing different MBMS bearer services of the MBMS user service on the same carrier.

The method according to claim 1 or 2, wherein the MBMS user service information specifically includes: an identifier of the MBMS user service, or mapping information of the MBMS bearer service and the MBMS user service.

4. The method of claim 3, wherein

If the MBMS user service information includes an identifier of the MBMS user service, the identifier of the MBMS user service is included in the MBMS bearer service identifier in the MBMS session start request message; or

If the MBMS user service information is mapping information of the MBMS bearer service and the MBMS user service, the mapping information includes: an identifier of the MBMS bearer service that is requested to be established, and at least one other MBMS The identifier of the bearer service, and the MBMS bearer service that is requested to be established and the other MBMS bearer service correspond to the same MBMS user service.

The method according to claim 4, wherein the identifier of the at least one other MBMS bearer service is specifically:

An identifier of all other MBMS bearer services except the MBMS bearer service that is requested to be established in the MBMS user service;

Or the identifier of the MBMS bearer service to be established after the MBMS bearer service that is requested to be established in the MBMS user service;

Or the identifier of the MBMS bearer service to be established of the MBMS bearer service that is requested to be established in the MBMS user service, and the identifier of the previous established MBMS bearer service of the MBMS bearer service that is requested to be established.

The method according to any one of claims 1 to 5, wherein the method further comprises:

If the radio bearer fails to be established for the MBMS bearer service established by the request, the corresponding MBMS user service is determined according to the MBMS user service information, and the other established MBMS bearer services of the MBMS user service are stopped.

A radio access controller, the radio access controller includes: a receiving unit, configured to receive an MBMS session start request message requesting to establish an MBMS bearer service, where the MBMS session start request message is included MBMS user service information;

8. The radio access controller according to claim 7, wherein the establishing unit Also includes:

a determining subunit, configured to determine, according to the MBMS user service information included in the message received by the receiving unit, an MBMS user service corresponding to the MBMS bearer service that is requested to be established;

And establishing a sub-unit, configured to establish, according to the MBMS user service determined by the determining unit, a radio bearer for the MBMS bearer service established by the request, and establish different MBMS bearer services of the MBMS user service on the same carrier.

9. The radio access controller of claim 8 wherein:

Determining, by the determining unit, the MBMS user service corresponding to the MBMS bearer service that is requested to be established according to the identifier of the MBMS user service; or

The determining unit determines, according to the mapping information of the MBMS bearer service and the MBMS user service, the MBMS user service corresponding to the MBMS bearer service that is requested to be established, and the mapping information includes: an identifier of the MBMS bearer service that is requested to be established and an identifier of at least one other MBMS bearer service. And the MBMS bearer service that is requested to be established and the other MBMS bearer service correspond to the same MBMS user service.

The radio access controller according to any one of claims 7-9, wherein the radio access controller further comprises:

Establishing a bearer failure processing unit, configured to: if the radio bearer fails to be established for the MBMS bearer service established by the request, determine, according to the MBMS user service information, a corresponding MBMS user service, and stop using other MBMS user services. MBMS bearer service.

A broadcast multicast service center BM-SC, wherein the BM-SC includes: an extension unit, configured to add an MBMS in a multimedia broadcast/multicast MBMS session start request message requesting to establish an MBMS bearer service User service information;

The broadcast multicast service center according to claim 11, wherein the MBMS user service information added by the extension unit is specifically: an identifier of an MBMS user service, or mapping information of an MBMS bearer service and an MBMS user service. .

13. A system for establishing a radio bearer for a multimedia broadcast/multicast MBMS bearer service, characterized in that the system comprises a radio access controller according to any of claims 7-10 and claims 11-12 The BM-SC described in any one of the above.