WO2010127485A1 - 一种多媒体组播广播业务会话处理方法及装置 - Google Patents

一种多媒体组播广播业务会话处理方法及装置 Download PDF

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Publication number
WO2010127485A1
WO2010127485A1 PCT/CN2009/071661 CN2009071661W WO2010127485A1 WO 2010127485 A1 WO2010127485 A1 WO 2010127485A1 CN 2009071661 W CN2009071661 W CN 2009071661W WO 2010127485 A1 WO2010127485 A1 WO 2010127485A1
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WIPO (PCT)
Prior art keywords
bearer service
mbms bearer
attribute information
service
current
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PCT/CN2009/071661
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English (en)
French (fr)
Inventor
周进怡
郭小龙
支春霞
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华为技术有限公司
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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to PCT/CN2009/071661 priority Critical patent/WO2010127485A1/zh
Priority to CN2009801008243A priority patent/CN102318308A/zh
Publication of WO2010127485A1 publication Critical patent/WO2010127485A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/16Arrangements for providing special services to substations
    • H04L12/18Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/30Resource management for broadcast services

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a MultiMe dia Broadcast Multicast Service (MBMS) session processing method and apparatus.
  • MBMS Broadcast Multicast Service
  • third-generation mobile communications can provide higher data rate services than second-generation mobile communications, thereby supporting multiple forms of service.
  • One of the characteristics of the service is that the service can be simultaneously sent to the user terminal that subscribes to the service in the wireless network. For example, weather forecasting, news clips, sports highlights, etc. Taking advantage of the simultaneous transmission of these multimedia services, the concept of multimedia multicast broadcasting services was introduced in the third generation mobile communication.
  • Some MBMS user services can provide location-related broadcast services, that is, provide different broadcast content to users in different areas, and the content of the user receiving the MBMS user service is related to the location of the MBMS user service.
  • BM-SC Broadcast Multicast Service Center
  • SA service area
  • SGSN Serving GPRS Support Node
  • GGSN Gateway General Packet Radio Service Node
  • the RAN may have saved the MBMS bearer service with the same Temporary Mobile Group Identity (TMGI), that is, the corresponding The MBMS bears the context, so the RAN will consider this to be a duplicate MBMS session start signaling, and therefore will reject the signaling, resulting in an update failure of the MBMS service area.
  • TMGI Temporary Mobile Group Identity
  • the embodiment of the present invention provides an MBMS session processing method and apparatus, which is used to solve the problem that the RAN may erroneously reject the MBMS bearer service in the prior art.
  • An embodiment of the present invention provides an MBMS session processing method, where the method includes: acquiring a current M
  • Attribute information of the BMS bearer service when the other MBMS bearer service that matches the attribute information of the current MBMS bearer service is saved, the session information is generated according to the attribute information of the current MBMS bearer service and the attribute information of the other MBMS bearer service. Processing signaling; transmitting the session processing signaling.
  • An embodiment of the present invention further provides an MBMS session processing network node, where the network node includes: an obtaining unit, configured to acquire attribute information of a current MBMS bearer service; and a generating unit, configured to: when the current MBMS bearer service is saved And the other MBMS bearer service that is matched by the attribute information, the session processing signaling is generated according to the attribute information of the current MBMS bearer service and the attribute information of the other MBMS bearer service, and the sending unit is configured to send the session processing signaling.
  • the network node includes: an obtaining unit, configured to acquire attribute information of a current MBMS bearer service; and a generating unit, configured to: when the current MBMS bearer service is saved And the other MBMS bearer service that is matched by the attribute information, the session processing signaling is generated according to the attribute information of the current MBMS bearer service and the attribute information of the other MBMS bearer service, and the sending unit is configured to send the session processing signaling.
  • An embodiment of the present invention further provides an MBMS session processing method, where the method includes: receiving attribute information of a current MBMS bearer service; and acquiring an existing MBMS bearer service that matches an attribute information of the current MBMS bearer service;
  • the IP multicast service address of the MBMS bearer service is allocated to the current MBMS bearer service, and provides different source identifiers; and the current MBMS bearer service data is sent according to the IP multicast address and the source identifier.
  • the embodiment of the present invention further provides an MBMS gateway, where the MBMS gateway includes: a receiving unit, configured to receive attribute information of a current MBMS bearer service, and a matching unit, configured to acquire, to match, attribute information of the current MBMS bearer service An existing MBMS bearer service; an allocating unit, configured to allocate an IP multicast address of the existing MBMS bearer service to the current MBMS bearer service, and provide different source identifiers; and a sending unit, configured to use, according to the IP The multicast address and the source identifier send the current MBMS bearer service data.
  • the embodiment of the present invention can determine the existing MBMS bearer service attribute information and the current MBMS bearer.
  • the correlation of the attribute information of the service is used to process the MBMS bearer service of the radio access network, so that the radio access network does not judge that the current MBMS bearer service is the same as the existing MBMS bearer service and rejects the current MB MS bearer service.
  • FIG. 1 is a flowchart of a first embodiment of an MBMS session processing method according to an embodiment of the present invention
  • FIG. 2 is a structural diagram of a first embodiment of an MBMS session processing network node according to an embodiment of the present invention
  • FIG. 4 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention
  • FIG. 5 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • FIG. 6 is a schematic diagram showing an implementation example of an application scenario of an MBMS session processing method according to an embodiment of the present invention.
  • FIG. 7 is a flowchart of a second embodiment of an MBMS session processing method according to an embodiment of the present invention
  • FIG. 8 is a structural diagram of a first embodiment of an MBMS gateway according to an embodiment of the present invention
  • FIG. 9 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • Embodiments of the present invention provide an MBMS session processing method and apparatus.
  • FIG. 1 shows an MBMS session processing method according to an embodiment of the present invention.
  • step 101 Including step 101, obtaining attribute information of the current MBMS bearer service.
  • the method of the embodiment of the present invention may be performed on multiple network nodes, where the network node
  • the method may include: an SGSN, a GGSN, a BM-SC, an MBMS Gateway (MBMS GW), etc.
  • the MBMS bearer service may be an MBMS service.
  • Step 102 When another MB MS bearer service that matches the attribute information of the current MBMS bearer service is saved, a session processing signal is generated according to the attribute information of the current MBMS bearer service and the attribute information of the other MBMS bearer service. make.
  • the attribute information of the existing MBMS bearer service is: the attribute information that is stored in the bearer context corresponding to the existing MBMS bearer service; the attribute information of the current MBM S bearer service is: the attribute information carried in the received signaling, Or attribute information in a context temporarily saved in the current MBM S bearer service process; the attribute information may include: TMGI, Flow Id, protocol (IP) address interconnected between networks, access The point name (Access Point Name, APN), the traffic class (Traffic class), the service area (SA), etc.; the correlation between the current MBMS bearer service and the attribute information of the existing MBMS bearer service means that if the current MBMS bears the service If the attribute information matches the attribute information of the existing MBMS bearer service of the network node, the current MBMS bearer service is considered to be related to the existing MBM S bearer service of the network node, otherwise the current MBMS bearer service and the existing MBMS bearer service are not.
  • the matches include the same or similar
  • the generating session processing signaling includes: first generating session stop signaling, terminating the existing MBMS bearer service of the network node having the similar attribute, and then regenerating The session initiation signaling of the current MBMS bearer service is notified to the network node to perform the transmission of the current MBMS bearer service. Anomalies caused by similar MBM S bearer services on the network nodes are avoided.
  • the generating the session processing signaling may further include: directly generating the session update signaling, to change the MBMS bearer service sent by the network node to be the current MBMS bearer service, where the actually performing a signaling conversion process, such that the RAN
  • the current MBMS bearer service is not considered to be the same as the existing M BMS bearer service, and the MBMS bearer service is refused to be sent to the user equipment (User Equipment, UE).
  • the session update signaling carries the necessary information, including: the flow identifier and the service area corresponding to the current MBMS bearer service.
  • the network node may refuse to update because there is no context attribute information corresponding to the current MBMS bearer service, the corresponding network node may be notified by a new update signaling, a parameter or a specific bit in the parameter, etc.
  • Ability to update attribute information such as: quality of service, service area, flow identification, etc.
  • the context of the MBMS bearer service is used to store attribute information in the network device.
  • the generating the session processing instruction may further include: the MBMS bearer service session start signaling may not be sent to the network node where the attribute information is similar, to avoid an abnormality that may occur in the network node due to the similarity of the MBMS bearer service attribute information.
  • the generating the session processing instruction may further include: issuing a MBMS bearer service session signaling that is terminated by the network node, and directly terminating the session of the existing MBMS bearer service.
  • the generating the session processing instruction includes: generating a corresponding session start signaling and sending the corresponding radio access network to the MBMS bearer service of the MBMS. This step is known to those skilled in the art from the prior art and will not be described in detail in this application.
  • Step 103 Send the session processing signaling.
  • the embodiment of the present invention can process the MBMS bearer service of the radio access network by determining the correlation between the existing MBMS bearer service attribute information and the attribute information of the current MBMS bearer service, so that the radio access network is not judged by the radio access network.
  • the current MBMS bearer service is the same as the existing MBMS bearer service and rejects the current MBMS bearer service.
  • FIG. 2 is a structural diagram of a first embodiment of an MBMS session processing network node according to an embodiment of the present invention.
  • the obtaining unit 201 is configured to acquire attribute information of the current MBMS bearer service.
  • the generating unit 202 is configured to: when the other MBMS bearer service that matches the attribute information of the current MBMS bearer service is saved, generate session processing according to the attribute information of the current MBMS bearer service and the attribute information of the other MBMS bearer service. Signaling.
  • the sending unit 203 is configured to send the session processing signaling.
  • the obtaining unit 201 transmits the detected attribute information of the current MBMS bearer service to the generating unit 202, and performs correlation determination. If the similarity is generated, the session processing signaling is generated, including the session stop signaling, and the termination is performed.
  • the existing MBMS bearer service in the network node with similar attributes is generated, and then the session start signaling of the current MBMS bearer service is generated, and the network node is notified to send the current MBMS bearer service, thereby avoiding the occurrence of the MBMS bearer service in the network node. And the exception is generated.
  • MBMS bearer service session signaling that terminates the existing network node, and directly terminates the session of the existing MBMS bearer service.
  • the session processing signaling is transmitted by the transmitting unit 203.
  • FIG. 3 is a data flow diagram of an embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • Step 301 The BM-SC sends signaling to the GGSN to start the MBMS bearer service session. It also includes attribute information of the MBMS bearer service, and the attribute information includes TMGI, Flow Id, IP, ⁇ , Traffic class, SA, and the like.
  • Step 302 The GGSN receives the signaling of the start of the MBMS bearer service session, and obtains the attribute information of the MBM S bearer service carried by the GGSN, where the attribute information is the attribute information of the current MBMS bearer service, and determines whether the attribute of the current MBMS bearer service is saved. Other MBMS bearer services that match the information. If other MBMS bearer services are saved, the other MBMS bearer services are existing MBMS bearers. The service can be judged whether the current MBMS bearer service and the existing MBMS bearer service have the same TMGI, the same flow identifier, and the like.
  • Step 303 If the MBMS bearer service that matches the current MBMS bearer service is not saved, perform normal processing in the prior art, for example, start MBMS of other network nodes and the RAN according to the session start signaling and the MBMS bearer service attribute information. The service session is carried, and the current MBMS bearer service is transmitted to the corresponding UE.
  • Step 304 Generate session processing signaling if the MBMS bearer service matching the current MBMS bearer service is saved on the GGSN.
  • the session processing signaling may be performed by performing session signaling switching, such as: switching session start signaling to session update signaling, and performing signaling signaling combination, such as: changing session start signaling into a session termination signal. Combined signaling of the start and session start signaling; by this step, the corresponding RAN does not refuse to send the current MBMS bearer service.
  • FIG. 4 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • the process of determining whether the current MBMS bearer service is similar to the existing MBMS bearer service is performed on the SGSN, and the same may be performed on the BM-SC or the MBMS gateway.
  • the embodiment of the present invention is only an example, and is not The MBMS session processing of the above judgment is restricted on which network node.
  • the BM-SC sends signaling to the GGSN to start the MBMS bearer service session. It also includes attribute information of the MBMS bearer service, and the attribute information includes TMGI, Flow Id, IP, A PN, Traff ic class, SA, and the like.
  • Step 402 The GGSN transmits the foregoing MBMS bearer service session start signaling and attribute information of the MBMS bearer service to the SGSN.
  • Step 403 The SGSN receives the signaling of the start of the MBMS bearer service session, and obtains the attribute information of the MBM S bearer service carried by the SGSN, where the attribute information is the attribute information of the current MBMS bearer service; determining whether the attribute of the current MBMS bearer service is saved. Other MBMS bearer services that match the information. Its In the process, it can be determined whether the current MBMS bearer service and the existing MBMS bearer service have the same T MGI, the same flow identifier, and the like.
  • Step 404 If the MGSN does not have an MBMS bearer service that matches the current MBMS bearer service, perform normal processing in the prior art, for example, start the MBMS bearer service of the RAN according to the session start signaling and the MBMS bearer service attribute information. Session, transmitting the current MBMS bearer service to the corresponding UE.
  • Step 405 Generate session processing signaling if the MBMS bearer service similar to the current MBMS bearer service is saved on the SGSN.
  • the session processing signaling may be performed by performing session signaling switching, such as: switching session start signaling to session update signaling, and performing signaling signaling combination, for example, session start signaling becomes session termination signaling. And combined signaling of session start signaling; by this step, the corresponding RAN does not refuse to send the current MBMS bearer service.
  • FIG. 5 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • the process of determining whether the current MBMS bearer service is similar to the existing MBMS bearer service is performed on the BM-SC.
  • the embodiment of the present invention is only an example, and does not limit the MBMS session processing on which the network node performs the above determination. .
  • the BM-SC determines whether other MBMS bearer services that match the attribute information of the current MBMS bearer service have been saved.
  • the current MBMS bearer service and the existing MB MS bearer service have the same TMGI, the same flow identifier, and the like.
  • Step 502 If there is no MBMS bearer service similar to the current MBMS bearer service on the BM-SC, perform normal processing in the prior art, for example, start other network nodes according to the session start signaling and the MBMS bearer service attribute information. For example, the MBMS bearer service session of the GGSN, the SGSN, and the RAN transmits the current MBMS bearer service to the corresponding UE.
  • Step 503 Generate session processing signaling if the BM-SC has an MBMS bearer service matching the current MBMS bearer service. For example, switching session signaling, such as: starting a session The signaling is switched to the session update signaling, and the signaling signaling is combined, for example, the session start signaling becomes the combined signaling of the session termination signaling and the session start signaling; by this step, the corresponding RAN is not The current MBMS bearer service is refused to be sent.
  • FIG. 6 is a schematic diagram of an application scenario of an MBMS session processing method according to an embodiment of the present invention.
  • GGSNU SGSNU SGSN2 and dusts 1 to 4 belong to the MBMS bearer service 1, each of which holds the context corresponding to the MBMS bearer service 1, and uses TMGI and Flow Idl in the BM-SC, SGSN1 or 2, G GSN1.
  • TMGI can be identified in the RAN; GGSN2, S GSN3, SGSN4, and RAN5 ⁇ 8 belong to the MBMS bearer service 2, each of which holds the context corresponding to the MBMS bearer service 2, and uses TMGI in the SGSN 3 or 4, GGSN2 Co-identified with Flow Id2, TMGI is recognized in the RAN.
  • the service area of the MBMS bearer service 2 is expanded to RAN3 to RAN8.
  • the MBMS bearer services 1, 2 belong to the same MBMS user service, that is, The same TMGI, so the service area of the MBMS bearer service 1 should be changed accordingly to be narrowed down to RAN1 ⁇ RAN2.
  • the attribute information of the saved MBMS bearer service should be changed.
  • the attribute information of the MBMS bearer service 2 is used to update the original attribute information stored in the MBMS bearer service context; For the SGSN2, the MBMS bearer service 1 should be Switching to the MBMS bearer service 2, deleting the context of the MBMS bearer service 1, establishing the context of the M BMS bearer service 2 for storing its attribute information, and adding the attribute information of the MBMS bearer service 2 to the GGSN1, that is, establishing the context of the MBMS bearer service 2. Used to save its attribute information.
  • the MBMS Bearer Service 2 involves a new downstream node, GGSN1, for the BM-SC, session start signaling is sent to the GGSN1.
  • the signaling carries the session attribute information related to the MBMS bearer service 2, including: the temporary mobile group identifier TMGI, the quality of service QoS, the MBMS service area, the broadcast or multicast mode, and the GGSN downstream. Node list parameters, stream IDs, etc. Since the signaling carries a flow identifier, it indicates that this is a sub-flow of the location-related service, and the sub-flow is The TMGI and the flow identifier are uniquely identified.
  • the GGSN1 needs to look in the local node according to the attribute information of the current MBMS bearer service 2, and determine whether there are other MBMS bearer services related to the MBMS bearer service 2, for example, matching according to the TMGI.
  • the GGSN1 finds that the saved MBMS bearer service 1 has the same TMGI in the context, and therefore determines that there is a correlation between the newly created MBMS bearer service 2 and the existing MBMS bearer service 1.
  • GGSN1 needs to perform further judgment and processing, including: GGSN1 compares the downlink node list and the service area between the two related MBMS bearer services.
  • SGSN2 is an overlapping node, and SA1 and SA2 overlap. :
  • GGSN1 may first terminate the MBMS bearer service 1 by initiating session stop signaling to the downstream node that overlaps, for example, SGSN2, and then initiate the MBMS bearer service 2 by means of signaling combination.
  • the session starts signaling, so that the RAN3 and RAN4 will not reject the MBMS bearer service 2, thereby avoiding the occurrence of an abnormality due to the overlap downstream.
  • the GGSN1 can directly use the session update signaling to implement the change of the attribute information stored in the downstream node MBMS bearer service context, and send a session update command to the downstream node, such as SGSN2, to the existing SGSN2.
  • the MBMS bearer service 1 is updated to the MBMS bearer service 2.
  • the session update signaling carries the necessary information, including: the flow identifier 2 corresponding to the MBMS bearer service 2, the service area 2, and the like.
  • the GGSN1 may notify the corresponding by new update signaling, indication parameters, specific bits in the parameters, and the like.
  • the downstream node for example, the newly defined special update signaling carries the context information corresponding to the MBMS bearer service 2, and indicates that the specific bit in the parameter or parameter carries the context information corresponding to the MBMS bearer service 2, and ensures that the corresponding attribute information is updated.
  • quality of service service area, flow identification, etc.
  • Method 3 GGSN1 may not send the session processing signaling of the MBMS bearer service 2 to the downstream node where the overlap occurs, that is, the MBMS bearer service 2 is not sent to the SGSN2 to avoid an abnormality that may occur due to the overlap in the downstream.
  • Method 4 GGSN1 can directly terminate the session start process of the MBMS bearer service 2, that is, prevent the RAN3, 4 from being mapped into the area 2.
  • the foregoing method 3 and method 4 are used to prevent the MBMS bearer service sent by the network node from being rejected by the RAN in the prior art, and the network node continuously sends similar MBMS bearer service session processing signaling. As a result, resources are wasted.
  • the method 3 and method 4 can terminate the network node to continuously send the MBMS bearer service session processing signaling to the RAN.
  • the embodiment of the present invention can process the MBMS bearer service of the radio access network by determining the correlation between the existing MBMS bearer service attribute information and the attribute information of the current MBMS bearer service, so that the radio access network does not judge the current MBMS bearer service and The existing MBMS bearer service is the same and the current MBMS bearer service is rejected.
  • the MBMS gateway when receiving the MBMS data sent by the BM-SC, the MBMS gateway allocates a different IP multicast address to each MBMS session, and then sends the MBMS data to all the joined RAN devices, which consumes a large amount of IP multicast address.
  • FIG. 7 is a flow chart showing another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • Step 701 Receive attribute information of a current MBMS bearer service.
  • Step 702 Obtain an existing MBMS bearer service that matches the attribute information of the current MBMS bearer service.
  • the attribute information of the current MBMS bearer service it matches whether the current MBMS bearer service is related to the existing MBMS bearer service.
  • the detected attribute information includes a TMGI, a flow identifier, an APN, a service area, and the like.
  • the above steps can be performed on the BM-SC or on the MBMS gateway.
  • Whether the matching of the current MBMS bearer service is related to the existing MBMS bearer service includes whether the saved MBMS bearer service attribute information has the same bearer information of the TMGI different flow identifier as the current MBMS bearer service attribute information, or has been saved. Bearer information with the same APN, or bearer information with the same service area has been saved.
  • Step 703 Assign an IP multicast address of the existing MBMS bearer service to the current M
  • the BMS hosts services and provides different source identities.
  • the MBMS gateway allocates the IP multicast address of the related MBMS bearer service to the current MBMS bearer service related to the existing MBMS bearer service, and provides different source identifiers to send the current MB MS bearer service data, where the source
  • the identifier includes the source IP address, or tunnel identifier (TEID).
  • Step 704 Send the current MBMS bearer service data according to the IP multicast address and the source identifier.
  • the MBMS gateway uses different source IP addresses to send data.
  • the MBMS gateway sends an MBMS session start signaling to the mobility management entity (E) or SGSN, and provides session attributes, IP multicast addresses, and corresponding Source IP address, etc.
  • the MBMS gateway uses different TEIDs to send data.
  • the MBMS gateway sends an MBMS session start signaling to the MME or the SGSN, and provides session attributes, IP multicast addresses, and corresponding TEID information.
  • FIG. 8 is a structural diagram of a first embodiment of an MBMS gateway according to an embodiment of the present invention.
  • the receiving unit 801 is configured to receive attribute information of a current MBMS bearer service.
  • the matching unit 802 is configured to acquire an existing MBMS bearer service that matches the attribute information of the current MBMS bearer service.
  • the allocating unit 803 is configured to allocate an IP multicast address of the existing MBMS bearer service to the current MBMS bearer service, and provide different source identifiers;
  • the sending unit 804 is configured to send the current MB MS bearer service data according to the IP multicast address and the source identifier.
  • the receiving unit 801 can receive the attribute information of the MBMS bearer service sent by the BM-SC, and the matching unit 802 transmits the matching result to the allocating unit 803, and the allocation unit 803 allocates the same IP to the MBMS bearer service with relevance.
  • the multicast address is sent by the sending unit 804 by using a different source identifier, such as a source IP address or a TEID. Through the above embodiments, limited IP multicast address resources can be saved, and system optimization is realized.
  • FIG. 9 is a data flow diagram of another embodiment of an MBMS session processing method according to an embodiment of the present invention.
  • the BM-SC sends session start signaling, indicating the upcoming transmission, and providing attribute information of the session to the MBMS gateway.
  • Step 902 The MBMS gateway returns a session start response signaling to the BM-SC.
  • Step 903 The MBMS gateway saves related session attribute information, and the MBMS gateway can determine, according to attribute information in the received signaling, such as: TMGI, flow identifier, APN, service area, etc., whether other related MBMSs have been saved.
  • attribute information in the received signaling such as: TMGI, flow identifier, APN, service area, etc.
  • the bearer service for example: has saved the MBMS bearer service with the same TMGI different flow identifier, or has saved the MBMS bearer service with the same APN, or has saved the MBMS bearer service with the same service area, if the MBMS gateway determines that the local has The MBMS bearer service associated with the current MBMS bearer service session is saved, and the MBMS gateway does not allocate the new IP multicast address to the current MBMS bearer service, but uses the IP multicast bearer address of the saved related MBMS bearer service.
  • the MBMS gateway can use the following methods to solve the above difference problem:
  • Method 1 The MBMS gateway uses different source IP addresses to send data.
  • the MBMS gateway sends an MBMS session start signaling to the MME or SGSN, and provides session attributes, IP multicast addresses, and corresponding source IP addresses.
  • Method 2 The MBMS gateway will use different TEIDs to send data.
  • the MBMS GW sends an MBMS session start signaling to the MME or the SGSN, and provides session attributes, IP multicast addresses, and corresponding TEID information.
  • Step 904 The MME or the SGSN sends an MBMS session start signaling to the RAN, including: a session attribute, an IP multicast address, and the like.
  • Step 905 The RNC responds to an MBMS session start response signaling to the MME or the SGSN.
  • Step 906 ⁇ E or SGSN saves the MBMS session attribute and returns an MBMS session start response signaling to MBMS gateway.
  • Step 907 The related RAN device joins according to the provided IP multicast address, so that the multicast data sent from the MBMS gateway can be received.
  • Step 908 the associated RAN device establishes necessary radio resources for transmitting MBMS data to the relevant UE.
  • Step 909 the BM-SC sends the MBMS data.
  • Step 910 The MBMS gateway receives the MBMS data from the BM-SC, and sends the MBMS data to all the joined RAN devices by using the IP multicast address assigned to the session.
  • the resources of the IP multicast address are saved, and the system is optimized.
  • the present invention can be implemented by hardware, or by software plus necessary general hardware platform.
  • the technical solution of the present invention may be embodied in the form of a software product, which may be stored in a non-volatile storage medium (which may be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including several The instructions are for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the present invention.

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Description

一种多媒体组播广播业务会话处理方法及装置 技术领域 本发明涉及通信技术领域, 尤其涉及一种多媒体组播广播业务 (MultiMe dia Broadcast Multicast Service , MBMS) 会话处理方法及装置。 背景技术
随着第三代移动通信技术 (3G) 的发展, 第三代移动通信可以提供比第 二代移动通信更高数据速率的服务, 从而支持多种业务形式。 比如视频电话、 图片下载、 高速浏览 Internet网络等服务。 其中有一类业务的特点是: 该业 务可以同时给无线网络中订阅了该业务的用户终端进行发送。 比如说天气预 报、 新闻短片、 体育比赛集锦等等。 利用这些多媒体业务同时发送的特点, 第三代移动通信引入了多媒体组播广播业务的概念。
有的 MBMS用户服务能够提供位置相关的广播服务, 即在不同的区域向用 户提供不同的广播内容, 用户接收该 MBMS用户服务的内容跟其所在的位置相 关。
发明人在实现本发明的过程中发现在现有技术中, 当广播组播业务服务 器(Broadcast Multicast- Service Center, BM—SC )发起的月艮务区域 (Service Area, SA) 更新涉及到新的服务通用分组无线业务支持节点 (Serving GPRS Support Node , SGSN ) 或网关通用分组无线业务支持节点 (Gateway GPRS Support Node, GGSN) 时, 会触发这些节点向下游发送 MBMS会话开始信令。 当该信令到达下游的无线接入网 (Radio Access Network, RAN) 之后, 由于 RAN 可能已经保存了具有相同临时移动组标识 (Temporary Mobile Group Identity, TMGI ) 的 MBMS承载服务, 即保存了对应的 MBMS承载上下文, 因 此 RAN会认为这是一个重复的 MBMS会话开始信令, 因此会拒绝该信令, 从而 导致 MBMS服务区域的更新失败。 发明内容
本发明的实施例提供一种 MBMS会话处理方法及装置, 用于解决现有技术 中 RAN可能会错误的拒绝 MBMS承载服务的问题。
本发明的实施例提供一种 MBMS会话处理方法, 该方法包括: 获取当前 M
BMS承载服务的属性信息; 当保存了与所述当前 MBMS承载服务的属性信息匹 配的其他 MBMS承载服务时, 根据所述当前 MBMS承载服务的属性信息与所述 其他 MBMS承载服务的属性信息生成会话处理信令; 发送所述会话处理信令。
本发明的实施例还提供一种 MBMS会话处理网络节点, 该网络节点包括: 获取单元, 用于获取当前 MBMS承载服务的属性信息; 生成单元, 用于当保存 了与所述当前 MBMS承载服务的属性信息匹配的其他 MBMS承载服务时, 根据 所述当前 MBMS承载服务的属性信息与所述其他 MBMS承载服务的属性信息生 成会话处理信令; 发送单元, 用于发送所述会话处理信令。
本发明的实施例还提供一种 MBMS会话处理方法, 该方法包括: 接收当前 MBMS承载服务的属性信息;获取与所述当前 MBMS承载服务的属性信息匹配的 已有 MBMS承载服务; 将所述已有 MBMS承载服务的 IP多播地址, 分配给所述 当前 MBMS承载服务, 并提供不同的源标识; 根据所述 IP多播地址及所述源 标识发送所述当前 MBMS承载服务数据。
本发明的实施例还提供一种 MBMS网关, 该 MBMS网关包括: 接收单元, 用于接收当前 MBMS承载服务的属性信息; 匹配单元, 用于获取与所述当前 M BMS承载服务的属性信息匹配的已有 MBMS承载服务; 分配单元, 用于将所述 已有 MBMS承载服务的 IP多播地址, 分配给所述当前 MBMS承载服务, 并提供 不同的源标识; 发送单元, 用于根据所述 IP多播地址及所述源标识发送所述 当前 MBMS承载服务数据。
本发明实施例可以通过判断已有 MBMS承载服务属性信息和当前 MBMS承载 服务的属性信息的相关性来处理无线接入网的 MBMS承载服务, 使得无线接入 网不会判断当前的 MBMS承载服务与已有的 MBMS承载服务相同而拒绝该当前 MB MS承载服务。 附图说明
图 1所示为本发明实施例一种 MBMS会话处理方法第一实施例的流程图; 图 2所示为本发明实施例 MBMS会话处理网络节点第一实施例的结构图; 图 3所示为本发明实施例一种 MBMS会话处理方法实施例的数据流图; 图 4所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图;
图 5 所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图;
图 6a至图 6e所示为本发明实施例一种 MBMS会话处理方法应用场景实施 例示意图;
图 7所示为本发明实施例一种 MBMS会话处理方法第二实施例的流程图; 图 8所示为本发明实施例 MBMS网关第一实施例的结构图;
图 9所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图。
具体实施方式
本发明的实施例提供一种 MBMS会话处理方法及装置。
如图 1 所示为本发明实施例一种 MBMS 会话处理方法第
Figure imgf000005_0001
图。
包括歩骤 101, 获取当前 MBMS承载服务的属性信息。
其中, 可以在多种网络节点上进行本发明实施例的方法 , 所述网络节点 可以包括: SGSN、 GGSN、 BM-SC、 MBMS网关(MBMS GW)等, 所述 MBMS承载服 务可以是 MBMS服务。
歩骤 102, 当保存了与所述当前 MBMS承载服务的属性信息匹配的其他 MB MS承载服务时, 根据所述当前 MBMS承载服务的属性信息与所述其他 MBMS承 载服务的属性信息生成会话处理信令。 其中, 已有 MBMS承载服务的属性信息 是指: 保存在已有 MBMS承载服务对应的承载上下文中的属性信息; 当前 MBM S承载服务的属性信息是指: 接收信令中所携带的属性信息, 或者在当前 MBM S承载服务处理过程中暂时所保存的上下文中的属性信息;所述属性信息可以 包括: TMGI , 流标识 (Flow Id) , 网络之间互连的协议 (IP) 地址, 接入点 名称 (Access Point Name , APN) , 流量类别 (Traffic class) , 服务区域 ( SA)等; 根据当前 MBMS承载服务与已有 MBMS承载服务的属性信息的相关性 是指, 如果当前 MBMS承载服务的属性信息与该网络节点已有的 MBMS承载服 务的属性信息匹配, 则认为所述当前 MBMS承载服务与该网络节点已有的 MBM S承载服务相关, 否则当前 MBMS承载服务与已有 MBMS承载服务不相关。其中 匹配包括相同或者相似。
如果所述当前 MBMS承载服务与已有的 MBMS承载服务相关, 所述生成会 话处理信令包括: 先生成会话停止信令, 终止所述发生属性相似的网络节点 已有的 MBMS承载服务, 之后再生成当前 MBMS承载服务的会话开始信令, 通 知该网络节点进行当前 MBMS承载服务的发送。 避免了在网络节点出现因 MBM S承载服务相似而产生的异常。
所述生成会话处理信令还可以包括: 直接生成会话更新信令, 以改变所 述网络节点发送的 MBMS承载服务为当前 MBMS承载服务, 这实际上是进行了 一个信令的转换处理, 这样 RAN就不会认为当前的 MBMS承载服务与已有的 M BMS承载服务相同, 而拒绝向用户设备 (User Equipment , UE) 发送该 MBMS 承载服务。 此时会话更新信令中要携带必要的信息, 包括: 当前 MBMS承载服 务对应的流标识、 服务区域等属性信息。 由于网络节点可能会因为没有当前 MBMS 承载服务对应的上下文属性信 息, 而拒绝更新, 因此可通过新的更新信令、 指示参数或参数中的特定比特 位等方法来通知对应的网络节点, 保证其能够完成属性信息的更新, 如: 服 务质量、 服务区域、 流标识等。 其中, 所述 MBMS承载服务的上下文是在网络 设备中用来保存属性信息。
所述生成会话处理指令还可以包括: 可以不向发生属性信息相似的网络节 点发送 MBMS承载服务会话开始信令, 以避免该网络节点可能出现的因 MBMS承 载服务属性信息相似而产生的异常。
所述生成会话处理指令还可以包括: 可以发出终止网络节点已有的 MBMS 承载服务会话信令, 直接终止所述已有 MBMS承载服务的会话。
如果所述当前 MBMS承载服务与已有的 MBMS承载服务不相关, 所述生成 会话处理指令包括: 生成相应的会话开始信令发送给相应的无线接入网, 进 行 MBMS的 MBMS承载服务。 本歩骤为本领域技术人员可以从现有技术内容中 获知, 在此申请中不进行详细描述。
歩骤 103, 发送所述会话处理信令。
通过上述实施例, 本发明实施例可以通过判断已有 MBMS承载服务属性信 息和当前 MBMS承载服务的属性信息的相关性来处理无线接入网的 MBMS承载 服务, 使得无线接入网不会因判断当前的 MBMS承载服务与已有的 MBMS承载 服务相同而拒绝该当前 MBMS承载服务。
如图 2 所示为本发明实施例 MBMS会话处理网络节点第一实施例的结构 图。
包括获取单元 201, 用于获取当前 MBMS承载服务的属性信息。
生成单元 202, 用于当保存了与所述当前 MBMS承载服务的属性信息匹配 的其他 MBMS承载服务时, 根据所述当前 MBMS承载服务的属性信息与所述其 他 MBMS承载服务的属性信息生成会话处理信令。
发送单元 203, 用于发送所述会话处理信令。 所述获取单元 201将检测到的当前 MBMS承载服务的属性信息传送给所述 生成单元 202, 进行相关性的判断, 如果相似则生成会话处理信令, 包括先生 成会话停止信令,终止所述发生属性相似的网络节点中已有的 MBMS承载服务, 之后再生成当前 MBMS 承载服务的会话开始信令, 通知该网络节点进行当前 MBMS承载服务的发送,从而避免在网络节点出现因 MBMS承载服务相似而产生 的异常。
或者还包括生成会话更新信令,来改变所述网络节点发送的 MBMS承载 服务。
或者还包括可以不生成发生属性信息相似的网络节点会话开始的信令, 以避免该网络节点可能出现的因 MBMS 承载服务属性信息相似而产生的异 常。
或者还包括可以生成终止网络节点已有的 MBMS承载服务会话信令, 直接 终止所述已有 MBMS承载服务的会话。
通过所述发送单元 203发送所述会话处理信令。
通过本发明实施例, 通过检测 MBMS承载服务的属性信息, 对相似的 MBM
S承载服务进行不同的会话处理, 从而可以确保 MBMS承载服务可以在 RAN上 顺利传送。 如图 3所示为本发明实施例一种 MBMS会话处理方法实施例的数据流图。 歩骤 301, BM-SC向 GGSN发送 MBMS承载服务会话开始的信令。 其中还 包括 MBMS承载服务的属性信息, 该属性信息包括 TMGI , Flow Id, IP, ΑΡΝ, Traffic class, SA等。
歩骤 302, GGSN接收 MBMS承载服务会话开始的信令, 获取其携带的 MBM S承载服务的属性信息, 该属性信息为当前 MBMS承载服务的属性信息; 判断 是否已保存与当前 MBMS承载服务的属性信息匹配的其它 MBMS承载服务。 其 中, 如果保存了其它 MBMS承载服务, 该其他 MBMS承载服务为已有的 MBMS承 载服务; 可以判断当前 MBMS承载服务和已有的 MBMS承载服务的是否具有相 同的 TMGI , 相同的流标识等。
歩骤 303, 如果没有保存与当前 MBMS承载服务匹配的 MBMS承载服务, 则 进行现有技术中的正常处理, 例如根据所述会话开始信令和 MBMS承载服务属 性信息启动其它网络节点和 RAN的 MBMS承载服务会话, 向相应的 UE传送当 前的 MBMS承载服务。
歩骤 304, 如果该 GGSN上保存了与当前 MBMS承载服务匹配的 MBMS承载 服务, 则生成会话处理信令。 生成会话处理信令具体可以是, 进行会话信令 的切换, 如: 将会话开始信令切换为会话更新信令, 进行信令信令的组合, 如: 将会话开始信令变成会话终止信令和会话开始信令的组合信令; 通过该 歩骤, 使相应的 RAN不会拒绝发送该当前 MBMS承载服务。 如图 4所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图。
本实施例判断当前 MBMS承载服务是否与已有的 MBMS承载服务相似的处 理过程放在 SGSN上进行, 同样的也可以置于 BM-SC或 MBMS网关上进行, 本 发明实施例只是举例, 并不限制在哪个网络节点上进行上述判断的 MBMS会话 处理。
包括歩骤 401, BM-SC向 GGSN发送 MBMS承载服务会话开始的信令。 其 中还包括 MBMS承载服务的属性信息, 该属性信息包括 TMGI , Flow Id, IP , A PN, Traff ic class , SA等。
歩骤 402, GGSN将上述 MBMS承载服务会话开始信令和 MBMS承载服务的 属性信息传送给 SGSN。
歩骤 403, SGSN接收 MBMS承载服务会话开始的信令, 获取其携带的 MBM S承载服务的属性信息, 该属性信息为当前 MBMS承载服务的属性信息; 判断 是否已保存与当前 MBMS承载服务的属性信息匹配的其它 MBMS承载服务。 其 中,可以判断当前 MBMS承载服务和已有的 MBMS承载服务的是否具有相同的 T MGI , 相同的流标识等。
歩骤 404, 如果该 SGSN上没有与当前 MBMS承载服务匹配的 MBMS承载服 务, 则进行现有技术中的正常处理, 例如根据所述会话开始信令和 MBMS承载 服务属性信息启动 RAN的 MBMS承载服务会话, 向相应的 UE传送当前 MBMS承 载服务。
歩骤 405, 如果该 SGSN上保存了与当前 MBMS承载服务相似的 MBMS承载 服务, 则生成会话处理信令。 生成会话处理信令具体可以是, 进行会话信令 的切换, 如: 将会话开始信令切换为会话更新信令, 进行信令信令的组合, 如: 会话开始信令变成会话终止信令和会话开始信令的组合信令; 通过该歩 骤, 使相应的 RAN不会拒绝发送该当前 MBMS承载服务。 如图 5所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图。
本实施例判断当前 MBMS承载服务是否与已有的 MBMS承载服务相似的处 理过程放在 BM-SC上进行, 本发明实施例只是举例, 并不限制在哪个网络节 点上进行上述判断的 MBMS会话处理。
包括歩骤 501, BM-SC判断是否已保存与当前 MBMS承载服务的属性信息 匹配的其它 MBMS承载服务。 其中, 可以判断当前 MBMS承载服务和已有的 MB MS承载服务的是否具有相同的 TMGI , 相同的流标识等。
歩骤 502, 如果该 BM— SC上没有与当前 MBMS承载服务相似的 MBMS承载 服务, 则进行现有技术中的正常处理, 例如根据所述会话开始信令和 MBMS承 载服务属性信息启动其他网络节点例如 GGSN、 SGSN和 RAN的 MBMS承载服务 会话, 向相应的 UE传送当前 MBMS承载服务。
歩骤 503, 如果该 BM— SC上具有与当前 MBMS承载服务匹配的 MBMS承载 服务, 则生成会话处理信令。 例如, 进行会话信令的切换, 如: 将会话开始 信令切换为会话更新信令, 进行信令信令的组合, 如: 会话开始信令变成会 话终止信令和会话开始信令的组合信令; 通过该歩骤, 使相应的 RAN不会拒 绝发送该当前 MBMS承载服务。 如图 6a至图 6e所示为本发明实施例一种 MBMS会话处理方法应用场景实 施例示意图。
在图 6a中, GGSNU SGSNU SGSN2、 以及塵 1〜4属于 MBMS承载服务 1, 节点中各自保存了 MBMS承载服务 1对应的上下文, 在 BM-SC、 SGSN1或 2、 G GSN1中使用 TMGI和 Flow Idl来共同标识, 在 RAN中可识别 TMGI ; GGSN2、 S GSN3、 SGSN4、 以及 RAN5〜8属于 MBMS承载服务 2, 节点中各自保存了 MBMS 承载服务 2对应的上下文, 在 SGSN3或 4、 GGSN2中使用 TMGI和 Flow Id2来 共同标识, 在 RAN中可识别 TMGI。
当 MBMS服务区域发生变化时, 如图 6b所示, MBMS承载服务 2的服务区 域要扩大到 RAN3〜RAN8, 在这种情况下, 由于 MBMS承载服务 1、 2属于相同 的 MBMS用户服务, 即使用相同的 TMGI , 因此 MBMS承载服务 1的服务区域应 当进行相应的变化, 缩小到 RAN1〜RAN2。 对于 RAN3〜RAN4, 其保存的 MBMS 承载服务的属性信息应当发生变化, BP : 用 MBMS承载服务 2的属性信息来更 新保存在 MBMS承载服务上下文中原有的属性信息; 对于 SGSN2应当从 MBMS 承载服务 1切换至 MBMS承载服务 2, 删除 MBMS承载服务 1的上下文, 建立 M BMS承载服务 2的上下文用于保存其属性信息, 对于 GGSN1应当增加 MBMS承 载服务 2的属性信息,即建立 MBMS承载服务 2的上下文用于保存其属性信息。
由于对于 BM-SC而言, MBMS承载服务 2涉及到新的下游节点, 即 GGSN1 , 因 此会向 GGSN1发送会话开始信令。 当 GGSN1收到会话开始信令后, 信令中会携 带 MBMS承载服务 2相关的会话属性信息, 包括: 临时移动组标识 TMGI、 服务质 量 QoS、 MBMS服务区域、 广播或组播模式、 GGSN下行流节点列表参数、 流标识 等。 由于信令中携带流标识, 表示这是位置相关服务的一个子流, 该子流由 TMGI和流标识来唯一标识, 此时 GGSN1需要根据当前 MBMS承载服务 2的属性信 息在本节点中寻找, 确定是否已存在与 MBMS承载服务 2相关的其他 MBMS承载服 务, 例如, 根据 TMGI进行匹配。 在该实施例中, GGSN1会发现所保存的 MBMS承 载服务 1的上下文中有相同的 TMGI , 因此判定新建的 MBMS承载服务 2同已有的 MBMS承载服务 1之间具有相关性。
此时 GGSN1需要进行进一歩的判断和处理, 包括: GGSN1会对照这两个相关 MBMS承载服务之间的下行流节点列表和服务区域, 在本实施例中 SGSN2为重叠 节点, SA1和 SA2存在重叠:
如图 6c和 6d所示的方法一: GGSN1可通过信令组合, 先向发生重叠的下 游节点, 如: SGSN2 , 发起会话停止信令来终止 MBMS承载服务 1, 之后再发起 MBMS承载服务 2的会话开始信令, 这样在 RAN3、 RAN4就不会拒绝 MBMS承载 服务 2, 从而避免在下游出现因重叠而产生的异常。
如图 6e所示的方法二: GGSN1可直接使用会话更新信令来实现下游节点 MBMS承载服务上下文中所保存属性信息的改变, 向下游的节点例如 SGSN2发送 会话更新指令, 将 SGSN2上已有的 MBMS承载服务 1更新为 MBMS承载服务 2, 此时 会话更新信令中要携带必要的信息, 包括: MBMS承载服务 2对应的流标识 2、 服务区域 2等。
在这种方法中, 由于下游节点可能会因为没有 MBMS承载服务 2对应的上 下文信息而拒绝更新, 因此 GGSN1 可通过新的更新信令、 指示参数、 参数中 的特定比特位等方法来通知对应的下游节点, 例如新定义的特殊更新信令中 携带 MBMS承载服务 2对应的上下文信息, 指示参数或者参数中的特定比特位 携带 MBMS承载服务 2对应的上下文信息, 保证其完成对应属性信息的更新, 如: 服务质量、 服务区域、 流标识等。
方法三: GGSN1可以不向发生重叠的下游节点发送 MBMS承载服务 2的会话处 理信令, 也就是说不将 MBMS承载服务 2发送给 SGSN2 , 以避免下游可能出现因 重叠而产生的异常。 方法四: GGSN1可以直接终止 MBMS承载服务 2的会话开始过程, 也就是 防止 RAN3、 4划到区域 2中。
以上方法三和方法四, 用于防止在现有技术中由于 RAN认为 MBMS承载服 务相同而拒绝网络节点发送的 MBMS承载服务, 而网络节点又会不断的发送相 似的 MBMS承载服务会话处理信令, 从而造成资源浪费, 通过方法三和方法四 可以终止网络节点不断向 RAN发送 MBMS承载服务会话处理信令。
本发明实施例可以通过判断已有 MBMS承载服务属性信息和当前 MBMS承 载服务的属性信息的相关性来处理无线接入网的 MBMS承载服务, 使得无线接 入网不会判断当前的 MBMS承载服务与已有的 MBMS承载服务相同而拒绝该当 前 MBMS承载服务。
在现有系统中, MBMS网关在接收 BM-SC发送的 MBMS数据时, 会给每个 MBMS会话分配不同的 IP多播地址, 然后向所有已加入的 RAN设备发送 MBMS 数据, 这样会消耗大量的 IP多播地址。
如图 7所示为本发明实施例一种 MBMS会话处理方法另一个实施例的流程 图。
歩骤 701, 接收当前 MBMS承载服务的属性信息。
歩骤 702,获取与所述当前 MBMS承载服务的属性信息匹配的已有 MBMS承 载服务。
根据当前 MBMS承载服务的属性信息, 匹配当前的 MBMS承载服务是否与 已有的 MBMS承载服务相关。其中, 所述检测的属性信息包括, TMGI、流标识、 APN、 服务区域等。 可以在 BM-SC上进行上述歩骤, 也可以在 MBMS网关上进 行上述歩骤。 所述匹配当前的 MBMS承载服务是否与已有的 MBMS承载服务相 关包括, 已保存的 MBMS承载服务属性信息是否与当前 MBMS承载服务的属性 信息具有相同 TMGI不同流标识的承载信息、 或者已保存了具有相同 APN的承 载信息、 或者已保存了具有相同服务区域的承载信息。
歩骤 703, 将所述已有 MBMS承载服务的 IP多播地址, 分配给所述当前 M BMS承载服务, 并提供不同的源标识。
MBMS网关给与已有 MBMS承载服务相关的当前 MBMS承载服务分配所述相 关的已有 MBMS承载服务的 IP多播地址, 并提供不同的源标识来发送当前 MB MS承载服务数据, 其中所述源标识包括源 IP地址, 或者隧道标识 (TEID) 。
歩骤 704,根据所述 IP多播地址及所述源标识发送所述当前 MBMS承载服 务数据。
所述 MBMS网关使用不同的源 IP地址来发送数据, 在这种情况下, MBMS网关 发送一个 MBMS会话开始信令给移动管理实体( E)或 SGSN, 并提供会话属性、 IP多播地址以及对应的源 IP地址等。
或者所述 MBMS网关使用不同的 TEID来发送数据, 此时, MBMS网关发送 一个 MBMS会话开始信令给 MME或 SGSN, 并提供会话属性、 IP多播地址以及 对应的 TEID信息等。
通过上述实施例,可以节约有限的 IP多播地址资源,实现了系统的优化。 如图 8所示为本发明实施例 MBMS网关第一实施例的结构图。
包括接收单元 801, 用于接收当前 MBMS承载服务的属性信息;
匹配单元 802, 用于获取与所述当前 MBMS承载服务的属性信息匹配的已 有 MBMS承载服务;
分配单元 803, 用于将所述已有 MBMS承载服务的 IP多播地址, 分配给所 述当前 MBMS承载服务, 并提供不同的源标识;
发送单元 804, 用于根据所述 IP多播地址及所述源标识发送所述当前 MB MS承载服务数据。
所述接收单元 801可以接收 BM-SC发送过来的 MBMS承载服务的属性信息, 所述匹配单元 802将匹配结果传送给分配单元 803,由分配单元 803分配给具 有相关性的 MBMS承载服务相同的 IP多播地址, 采用不同的源标识, 例如源 I P地址或者 TEID等, 再通过发送单元 804将所述 MBMS承载服务发送出去。 通过以上实施例,可以节约有限的 IP多播地址资源,实现了系统的优化。 如图 9所示为本发明实施例一种 MBMS会话处理方法另一实施例的数据流 图。
包括歩骤 901, BM-SC发送会话开始信令, 指示即将开始的传输, 提供会话 的属性信息给 MBMS网关。
歩骤 902, MBMS网关向 BM-SC返回会话开始响应信令。
歩骤 903, MBMS网关保存相关的会话属性信息, 此时 MBMS网关可以根据接 收信令中的属性信息, 如: TMGI、 流标识、 APN、 服务区域等, 来判断是否已 经保存了其他相关的 MBMS承载服务, 如: 已保存了具有相同 TMGI不同流标识 的 MBMS承载服务、 或者已保存了具有相同 APN的 MBMS承载服务、 或者已保存了 具有相同服务区域的 MBMS承载服务, 如果 MBMS网关判定本地已经保存了与当 前 MBMS承载服务会话相关的 MBMS承载服务, 则 MBMS网关不分配给当前的 MBMS 承载服务新的 IP多播地址, 而是使用已保存的相关 MBMS承载服务中的那个 IP 多播地址。 为了让下游 MBMS数据的潜在接收设备, 如: RNC、 eNodeB, 能够对 使用相同 IP多播地址的数据进行区分, MBMS网关可以使用如下方法来解决上 述区别问题:
方法一: MBMS网关使用不同的源 IP地址来发送数据。 在这种情况下, MBMS 网关发送一个 MBMS会话开始信令给 MME或 SGSN, 并提供会话属性、 IP多播地址 以及对应的源 IP地址等。
方法二: MBMS网关会使用不同的 TEID来发送数据。 此时, MBMS GW发送一 个 MBMS会话开始信令给 MME或 SGSN, 并提供会话属性、 IP多播地址以及对应的 TEID信息等。
歩骤 904, MME或 SGSN向 RAN发送 MBMS会话开始信令, 包含: 会话属性、 IP 多播地址等。
歩骤 905, RNC响应一个 MBMS会话开始响应信令给 MME或 SGSN。
歩骤 906, 匪 E或 SGSN保存 MBMS会话属性并返回 MBMS会话开始响应信令给 MBMS网关。
歩骤 907, 相关的 RAN设备按照所提供的 IP多播地址加入, 从而能够接收到 来自于 MBMS网关发送的多播数据。
歩骤 908,相关的 RAN设备建立用于传输 MBMS数据到相关 UE的必要的无线资 源。
歩骤 909, BM-SC发送 MBMS数据。
歩骤 910, MBMS网关接收来自 BM-SC的 MBMS数据, 并通过为该会话分配 的 IP多播地址向所有已加入的 RAN设备发送 MBMS数据。
通过将具有相似属性信息的 MBMS承载服务采用相同的 IP多播地址, 并 采用不同的源 IP地址或者 TEID发送多播数据, 节省了 IP多播地址的资源, 优化了系统。
通过以上的实施方式的描述, 本领域的技术人员可以清楚地了解到本发 明可以通过硬件实现, 也可以借助软件加必要的通用硬件平台的方式来实现。 基于这样的理解, 本发明的技术方案可以以软件产品的形式体现出来, 该软 件产品可以存储在一个非易失性存储介质 (可以是 CD-ROM, U盘, 移动硬盘 等) 中, 包括若干指令用以使得一台计算机设备 (可以是个人计算机, 服务 器, 或者网络设备等) 执行本发明各个实施例所述的方法。
以上所述的具体实施方式, 对本发明的目的、 技术方案和有益效果进行 了进一歩详细说明, 所应理解的是, 以上所述仅为本发明的具体实施方式而 已, 并不用于限定本发明的保护范围, 凡在本发明的精神和原则之内, 所做 的任何修改、 等同替换、 改进等, 均应包含在本发明的保护范围之内。

Claims

权 利 要 求 书
1.一种多媒体组播广播业务 MBMS会话处理方法,其特征在于该方法包括: 获取当前 MBMS承载服务的属性信息;
当保存了与所述当前 MBMS承载服务的属性信息匹配的其他 MBMS承载服 务时, 根据所述当前 MBMS承载服务的属性信息与所述其他 MBMS承载服务的 属性信息生成会话处理信令;
发送所述会话处理信令。
2. 根据权利要求 1所述的方法, 其特征在于, 所述获取当前 MBMS承载 服务的属性信息, 具体为:
从广播组播业务服务器 BM— SC接收 MBMS承载服务会话开始的信令, 获 取其携带的 MBMS承载服务的属性信息, 该属性信息为当前 MBMS承载服务的 属性信息;
或, 通过网关通用分组无线业务支持节点 GGSN从 BM— SC接收 MBMS承载 服务会话开始的信令, 获取其携带的 MBMS承载服务的属性信息, 该属性信息 为当前 MBMS承载服务的属性信息;
或, BM— SC获取当前 MBMS承载服务的属性信息。
3. 根据权利要求 1所述的方法, 其特征在于, 所述当保存了与所述当前 MBMS承载服务的属性信息匹配的其他 MBMS承载服务时, 具体为:
如果所述当前 MBMS承载服务的属性信息与保存的其他 MBMS承载服务的 属性信息相同或相似, 则保存了与所述当前 MBMS承载服务的属性信息匹配的 其他 MBMS承载服务;
所述属性信息相同或相似, 具体为:
判断当前 MBMS承载服务和已有的 MBMS承载服务的是否具有相同或相似 的临时移动组标识 TMGI、 流标识、 接入点名称 APN或服务区域。
4. 根据权利要求 1至 3任一项所述的方法, 其特征在于, 所述根据所述 当前 MBMS承载服务的属性信息与所述其他 MBMS承载服务的属性信息生成会 话处理信令, 具体为:
生成会话停止信令, 以终止所述保存的其他 MBMS承载服务, 生成所述当 前 MBMS承载服务的会话开始信令并发送;
或, 生成会话更新信令, 以将所述保存的其他 MBMS承载服务更新为所述 当前 MBMS承载服务;
或, 禁止向与所述当前 MBMS承载服务的属性信息匹配的下游网络节点发 送所述当前 MBMS承载服务会话开始信令;
或, 终止所述当前 MBMS承载服务, 并向上游网络节点返回终止所述当前 MBMS承载服务的信令。
5. 根据权利要求 1至 3任一项所述的方法, 其特征在于, 所述属性信息 至少包括以下之一: 临时移动组标识, 流标识, 网络之间互连的协议地址, 接入点名称, 流量类别, 服务区域。
6. 根据权利要求 4所述的方法, 其特征在于, 所述生成会话更新信令, 以将所述保存的其他 MBMS承载服务更新为所述当前 MBMS承载服务还包括: 利用新的更新信令、 指示参数或参数中的特定比特位通知相应的网络节 点更新的所述当前 MBMS承载服务的上下文信息。
7.一种多媒体组播广播业务 MBMS会话处理网络节点, 其特征在于该网络 节点包括:
获取单元, 用于获取当前 MBMS承载服务的属性信息;
生成单元, 用于当保存了与所述当前 MBMS承载服务的属性信息匹配的其 他 MBMS承载服务时, 根据所述当前 MBMS承载服务的属性信息与所述其他 MB MS承载服务的属性信息生成会话处理信令;
发送单元, 用于发送所述会话处理信令。
8. 一种多媒体组播广播业务 MBMS会话处理方法, 其特征在于该方法包 括: 接收当前 MBMS承载服务的属性信息;
获取与所述当前 MBMS承载服务的属性信息匹配的已有 MBMS承载服务; 将所述已有 MBMS承载服务的 IP多播地址, 分配给所述当前 MBMS承载服 务, 并提供不同的源标识;
根据所述 IP多播地址及所述源标识发送所述当前 MBMS承载服务数据。
9.根据权利要求 8所述的方法, 其特征在于, 所述获取与所述当前 MBMS 承载服务的属性信息匹配的已有 MBMS承载服务, 具体为:
获取与所述当前 MBMS承载服务的属性信息相同或相似的当前 MBMS承载 服务的已有 MBMS承载服务;
所述属性信息相同或相似, 具体为:
判断当前 MBMS承载服务和已有的 MBMS承载服务的是否具有相同或相似 的临时移动组标识 TMGI、 流标识、 接入点名称 APN或服务区域。
10. 根据权利要求 8所述的方法, 其特征在于, 所述根据所述 IP多播地 址及所述源标识发送所述当前 MBMS承载服务数据, 包括:
MBMS网关发送一个 MBMS会话开始信令给移动管理实体匪 E或服务通用分组 无线业务支持节点 SGSN, 并提供会话的属性信息、 IP多播地址以及对应的源 IP地址;
或, MBMS网关发送一个 MBMS会话开始信令给 E或 SGSN, 并提供会话 的属性信息、 IP多播地址以及对应的隧道标识 TEID信息。
11.根据权利要求 8或 9所述的方法, 其特征在于, 所述属性信息至少包 括以下之一: 临时移动组标识, 流标识, 网络之间互连的协议地址, 接入点 名称, 流量类别, 服务区域;
所述源标识包括: 源 IP地址, 或者隧道标识。
12. 一种多媒体组播广播业务 MBMS网关, 其特征在于该 MBMS网关包括: 接收单元, 用于接收当前 MBMS承载服务的属性信息;
匹配单元, 用于获取与所述当前 MBMS承载服务的属性信息匹配的已有 M S承载服务;
分配单元, 用于将所述已有 MBMS承载服务的 IP多播地址, 分配给所述 前 MBMS承载服务, 并提供不同的源标识;
发送单元, 用于根据所述 IP 多播地址及所述源标识发送所述当前 MBMS 载服务数据。
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