WO2008046339A1 - Procédé, système et appareil pour déterminer le mode de portée - Google Patents

Procédé, système et appareil pour déterminer le mode de portée Download PDF

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Publication number
WO2008046339A1
WO2008046339A1 PCT/CN2007/070770 CN2007070770W WO2008046339A1 WO 2008046339 A1 WO2008046339 A1 WO 2008046339A1 CN 2007070770 W CN2007070770 W CN 2007070770W WO 2008046339 A1 WO2008046339 A1 WO 2008046339A1
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WIPO (PCT)
Prior art keywords
multicast capability
capability information
multicast
access network
bearer
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PCT/CN2007/070770
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English (en)
Chinese (zh)
Inventor
Geng Wang
Jianfeng Zhong
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Huawei Technologies Co., Ltd.
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Publication date
Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Publication of WO2008046339A1 publication Critical patent/WO2008046339A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

Definitions

  • the present invention relates to mobile communication technologies, and in particular, to a method, system and apparatus for determining a bearer mode. Background of the invention
  • MBMS multicast and broadcast services
  • Multicast services refer to multiple data sources.
  • the method can save bandwidth and realize network resource sharing, including resource sharing between the mobile core network and the access network, especially the air interface resource sharing.
  • MBMS defined by 3GPP can not only achieve plain text low-rate message-like multicast and broadcast, but also enable high-speed multimedia service multicast and broadcast.
  • the MBMS service is implemented by adding some new network functional entities and adding MBMS functional support to existing network entities.
  • a functional entity broadcast multicast service center (BM-SC) is added; and an existing network entity involved, such as a GPRS service support node (SGSN), is added.
  • SGSN GPRS service support node
  • GGSN GPRS Service Gateway Node
  • RNC/BSC Radio Network Controller/Base Station Controller
  • RAN Radio Access Network
  • UE User Equipment
  • the session control entity In order to apply the MBMS service, the session control entity is required to acquire the multicast capability of the UE and the access network in advance. However, in some applications, the session control entity can only obtain the MBMS capability of the UE, that is, the multicast capability, and cannot acquire the multicast capability of the access network.
  • 3GPP proposes to apply MBMS (IMSoMBMS) solution in IMS services, in which MBMS is enabled.
  • the IMS is responsible for the service processing of the application server (AS). That is, the session control entity first knows the MBMS capability of the UE, and then determines whether to use the MBMS bearer data transmission according to the MBMS capability of the UE, that is, whether the terminal adopts the multicast mode. Data transfer.
  • the establishment of multicast also needs to involve network entities such as RAN, SGSN, and GGSN.
  • network entities such as RAN, SGSN, and GGSN.
  • the GGSN when establishing a multicast session, the existing system allocates a GGSN with multicast capability to the UE.
  • the bearer mode needs to be established according to the actual MBMS capability of the RAN and the SGSN in the area where the UE is located. If only one entity in the RAN and the SGSN does not have the MBMS capability, the multicast cannot be established successfully.
  • the network entity may change, and different network entities have different capabilities to support MBMS.
  • a session control entity such as an AS
  • an embodiment of the present invention provides a method for determining a bearer mode, and a system and apparatus for determining a bearer mode, so that a session control entity acquires a multicast capability of a UE and a current access network.
  • the bearer mode is processed according to the multicast capability.
  • the system for determining the bearer mode includes: an access network entity, configured to send multicast capability information of the access network to the user equipment UE, and a UE, configured to receive the multicast capability of the access network And transmitting, according to the received multicast capability information of the access network and the multicast capability information of the access network, the bearer reference multicast capability information to the session control entity;
  • the session control entity is configured to receive the bearer reference multicast capability information from the UE, and determine a bearer mode of the UE according to the received bearer reference multicast capability information.
  • a multicast capability acquisition module configured to acquire multicast capability information of the access network, and send the obtained multicast capability information of the access network to the sending module;
  • the multicast capability sending module is configured to send bearer reference multicast capability information to the session control entity according to the received multicast capability information of the access network and the multicast capability information of the access network.
  • a multicast capability acquisition module configured to acquire bearer reference multicast capability information including multicast capability information of the user equipment UE and the access network, and send the obtained bearer reference multicast capability information to the bearer processing module;
  • the bearer processing module is configured to determine, according to the received bearer reference multicast capability information, a bearer mode adopted by the UE.
  • the UE acquires the multicast capability of the access network, and sends the bearer reference multicast capability to the session control entity according to the obtained access network multicast capability and its own multicast capability information.
  • the session control entity determines the bearer mode adopted by the UE according to the bearer reference multicast capability information sent by the UE. Therefore, the session control entity can acquire the multicast capability of the UE, and can obtain the multicast capability of the access network, and then the session control entity can determine whether to use the multicast bearer mode to perform data according to the multicast capability of the UE and the access network. Transmission, thereby further avoiding the blindness of initiating the establishment of multicast And, further, when the UE moves in the network area, the UE may select an appropriate bearer mode for data transmission.
  • FIG. 1 is an exemplary flowchart of a method for determining a bearer mode according to an embodiment of the present invention
  • FIG. 2 is an exemplary structural diagram of a system for determining a bearer mode according to an embodiment of the present invention
  • FIG. 4 is a schematic flowchart of a method for determining a bearer mode according to Embodiment 1 of the present invention
  • FIG. 5 is a flowchart of a method for determining a bearer mode according to Embodiment 2 of the present invention.
  • FIG. 6 is a flowchart of a method for determining a bearer mode according to Embodiment 3 of the present invention. Mode for carrying out the invention
  • the UE acquires the multicast capability of the access network, and sends the acquired access network multicast capability and its own multicast capability information to the session control entity.
  • the session control entity sends the multiple according to the UE.
  • the broadcast capability information is determined to perform data transmission on the UE by using a unicast bearer mode or a multicast bearer mode.
  • FIG. 1 is an exemplary flowchart of a method for determining a bearer mode according to an embodiment of the present invention. The process includes the following steps:
  • Step 101 The UE acquires a multicast capability of the access network.
  • the access network is used as an example of the GPRS network, and the method for the UE to acquire the multicast capability of the access network may be more than four. Some methods can be found as follows:
  • the UE When the UE acquires the multicast capability of the RAN, it may agree in advance: if the RAN of the cell belongs to
  • the MBMS multicast capability may be used to periodically broadcast MBMS-related information to the RAN coverage area by the RNC/BSC in the RAN.
  • the UE may determine that the RAN has multicast capability by receiving the broadcast message; Broadcasting capability, then RAN
  • the RNC/BSC does not periodically broadcast MBMS-related information to the RAN coverage area, and the UE may determine that the current RAN does not have multicast capability according to the failure to receive the multicast information.
  • the routing domain update occurs when the SGSN changes during the initial setup session or the session.
  • the SGSN sends the SGSN whether the SGSN has the MBMS multicast capability information, and the UE may
  • the target SGSN informs the serving SGSN of its own multicast capability, and then the UE SGSN indicates to the UE.
  • the target SGSN is the SGSN in the area where the mobile will enter, and the serving SGSN is the SGSN in the area to be left when the mobile moves.
  • the SGSN may query the RNC/BSC in the RAN that currently provides the service to the user, and obtain information about whether the RAN supports the MBMS by using the query, and the SGSN indicates to the UE whether the current RAN is available to the UE.
  • the foregoing is a preferred implementation method for the UE to acquire the access network capability, that is, the RAN multicast capability and the SGSN multicast capability are required to be acquired.
  • the UE may also acquire only the RAN multicast capability or only the SGSN.
  • the multicast capability, the obtained multicast capability information of the RAN or the multicast capability information of the SGSN is used as the integrated multicast capability information of the access network, and the acquisition method may be the same as or different from the above method.
  • Step 102 The UE sends the acquired multicast capability of the access network and its own multicast capability information to the session control entity.
  • the UE may further determine the comprehensive multicast capability according to the acquired multicast capability of the access network and its own multicast capability. Both the network and itself have multicast capabilities, and the integrated multicast capability has Multicast capability; if one of the access network and itself does not have multicast capability, the integrated multicast capability does not have multicast capability, and then the UE can send the integrated multicast capability information to the session control entity.
  • the multicast capability of the access network acquired by the UE may be the comprehensive capability of the access network indicated in step 101 (ie, the integrated multicast capability of the access network), or may be the access network indicated in step 101.
  • Each network entity, such as the SGSN in the GPRS network and the multicast capability information of the RAN may be the comprehensive multicast capability according to the acquired multicast capability of the access network and its own multicast capability. Both the network and itself have multicast capabilities, and the integrated multicast capability has Multicast capability; if one of the access network and itself does not have multicast capability, the integrated multicast capability does not have multicast capability, and then
  • the UE may directly send the acquired integrated multicast capability information of the access network and its own multicast capability information to the session control entity.
  • the UE may further send, to the session control entity, the multicast capability information of each of the acquired network entities, such as the SGSN in the GPRS network and the RAN, and its own multicast capability information.
  • the foregoing multicast capability information that the UE sends to the session control entity may be referred to as bearer reference multicast capability information.
  • Step 103 The session control entity determines, according to the received multicast capability information, that the UE performs data transmission by using a unicast bearer mode or a multicast bearer mode.
  • the session control entity such as the AS in the IMS, receives the bearer reference multicast capability information sent by the UE, and the bearer reference multicast capability information may be integrated multicast capability information, or may be integrated multicast capability information of the access network and the UE.
  • the capability information of the network may also be the multicast capability information of each network entity in the access network and the capability information of the UE itself, and then the AS determines the comprehensive multicast capability information according to the received multicast capability information, according to the comprehensive
  • the multicast capability information is determined to perform data transmission on the UE by using a unicast bearer mode or a multicast bearer mode.
  • the multicast bearer mode can be used for data transmission, and the unicast bearer mode can be used for data transmission. For example, when the number of users in a session is small, no more is used. Broadcast bearer mode, as other users join the session, when the number of users that can adopt the multicast mode reaches a certain value, then the multicast bearer mode is adopted; if the integrated multicast capability information does not have the multicast capability, the decision adopts a single Broadcast bearer The way to data transmission.
  • the method may further include: before receiving the multicast capability information sent by the UE, the session control entity first performs data transmission on the UE in a unicast bearer manner, and then the session control entity may initiate the UE and the UE to the UE.
  • the query of the network multicast capability may also not initiate a query to the UE but be actively sent by the UE.
  • the multicast bearer mode may be used for data transmission, and the unicast bearer mode may be further determined to perform data transmission; If the integrated multicast capability information does not have multicast capability, the decision continues to maintain the unicast mode for data transmission.
  • the unicast bearer mode is not used for data transmission.
  • the UE acquires the multicast capability of the target access network and sends the multicast capability to the session control entity, and then the session control entity determines the integrated multicast capability. If the integrated multicast capability information has multicast capability, The decision uses the multicast bearer mode for data transmission, and the decision can continue to maintain the unicast bearer mode for data transmission. If the integrated multicast capability information does not have multicast capability, the decision is to use unicast bearer mode for data transmission.
  • the session control entity determines that the integrated multicast capability has the multicast capability according to the multicast capability information sent by the UE, so as to trigger the session control entity to establish the multicast bearer.
  • the session control entity can decide not to use the multicast mode, but still perform data transmission in a unicast manner, or can decide to use the multicast mode to perform data transmission, so that the bearer mode is more flexible, of course, if the decision is made by using multicast mode. Data transmission can save bandwidth and achieve resource sharing.
  • FIG. 2 is an exemplary structural diagram of a system for determining a bearer mode based on the method embodiment shown in FIG. 1. As shown in the solid line portion of FIG. 2, the system includes: a UE 200, a session control entity 210, and an access network entity 220.
  • the access network entity 220 is configured to send the multicast capability information of the access network to the UE 200.
  • the UE 200 is configured to receive the multicast capability of the access network, and send the acquired access network multicast capability information and its own multicast capability information to the session control entity 210.
  • the session control entity 210 is configured to receive the multicast capability information from the UE 200, and determine, according to the received multicast capability information, a unicast bearer mode or a multicast bearer mode for the UE 200.
  • the UE 200 can be implemented in multiple manners. The specific implementation of the UE 200 is described in detail in the following. As shown in the dotted line in FIG. 2, the specific implementation of the UE 200 may include: Module 201 and multicast capability transmitting module 202.
  • the multicast capability acquisition module 201 is configured to acquire the multicast capability of the access network, and send the acquired multicast capability information of the access network to the multicast capability sending module 202.
  • the multicast capability sending module 202 is configured to send bearer reference multicast capability information to the application server session control entity 210 according to the received multicast capability information of the access network and its own multicast capability information.
  • the multicast capability sending module 202 may be further configured to: determine comprehensive multicast capability information according to the received multicast capability information of the access network and the multicast capability information of the access network, and use the comprehensive multicast capability information as a bearer reference.
  • the capability information is broadcast and sent to the session control entity 210.
  • the session control entity 210 may also have multiple specific implementation forms. The specific implementation of the session control entity 210 is described in detail in only one of the following forms. As shown by the dotted line in FIG. 2, the session control entity 210 may include: a multicast capability acquisition module 211 and bearer processing module 212.
  • the multicast capability acquisition module 211 is configured to obtain bearer reference multicast capability information including the multicast capability of the UE 200 and the access network, and send the obtained bearer reference multicast capability information to the bearer processing module 212.
  • the multicast capability of the UE 200 and the access network may be the comprehensive multicast capability of the UE 200 and the access network, or may be the multicast capability of the UE 200 and the integrated multicast capability of the access network, or may be the multicast capability of the UE 200. And the multicast capability of each network entity in the access network.
  • the bearer processing module 212 is configured to determine, according to the received bearer reference multicast capability information, data transmission by using the unicast bearer mode or the multicast bearer mode for the UE 200.
  • each functional entity and module may be consistent with the description in the process shown in FIG. 1, and the access network entity 220 may include an SGSN and a RAN in the GPRS access network, and the session control entity 210 may be an IMS service. AS and so on.
  • a person skilled in the art can transform various specific implementation forms of the UE 200 and the session control entity 210, such as splitting or merging the above modules, according to the technical solution in the embodiments of the present invention. No longer.
  • the access network is a GPRS network
  • the session control entity is an AS
  • the MBMS service is applied in the IMS is taken as an example.
  • FIG. 3 is a schematic structural diagram of a networking system of a specific application according to an embodiment of the present invention.
  • the networking system includes: UE301, RAN302, SGSN303, GGSN304, BM-SC305, AS306, Call Session Control Function Entity (CSCFs) 307, Media Resource Function Entity (MRF) 308, and Home Subscriber Server ( HSS) 309.
  • CSCFs Call Session Control Function Entity
  • MRF Media Resource Function Entity
  • HSS Home Subscriber Server
  • the UE 301 supports the activation and deactivation of the MBMS multicast service, and is used to acquire the multicast capability of the access network GPRS, and sends the acquired GPRS multicast capability and its own multicast capability information to the AS.
  • the UE may include at least the multicast capability acquisition module shown in FIG. 2. 201 and multicast capability transmitting module 202, the functions may also be consistent with the description in FIG. 2.
  • the acquired multicast capability of GPRS includes the multicast capability of the RAN 302 and the multicast capability of the SGSN 303.
  • the AS 306 is configured to control the IMS service that uses the MBMS multicast, and is configured to receive the multicast capability information from the UE, and determine, according to the received multicast capability information, the unicast bearer mode or the multicast bearer mode of the UE 301, and the control network. Establish a corresponding bearer mode for data transmission.
  • the MRF 308 is notified to establish a bearer as needed.
  • the AS 306 may include at least the multicast capability acquisition module 211 and the bearer processing module 212 shown in FIG. 2, and the functions may also be consistent with the description in FIG. 2.
  • the BM-SC 305 is the entry point for content providers to authorize and initiate MBMS multicast bearer services and to deliver MBMS content on a scheduled schedule. Its functions include: (1) authentication, authorization and charging for third-party content providers; (2) providing MBMS transmission-related parameters, such as QoS, multicast broadcast areas; initiating and terminating MBMS transmission resources; (3) The external data source receives and transmits the MBMS content, arranges the MBMS session transmission and informs the user; the session retransmission, etc.; (4) the service statement, including the media description, the session description such as the multicast service identifier, the address, the transmission time, and the like.
  • the RAN 302 includes a Universal Terrestrial Radio Access Network (UTRAN) and a Global System for Mobile Communications (GSM)/Enhanced GSM (EDGE) Access Network (GERAN), etc., and transmits MBMS data in a predetermined multicast or broadcast service area through the RNC/BSC.
  • UTRAN Universal Terrestrial Radio Access Network
  • GSM Global System for Mobile Communications
  • EDGE Enhanced GSM
  • GERAN Global System for Mobile Communications
  • GERAN Global System for Mobile Communications
  • GERAN Global System for Mobile Communications
  • GERAN Global System for Mobile Communications
  • GERAN Global System for Mobile Communications
  • the SGSN 303 performs network control on the user, supports the movement of the MBMS receiver between the SGSNs, and establishes or releases the bearer connection with the RAN and the GGSN according to the notification sent by the GGSN.
  • the GGSN 304 acts as an IP multicast service node of the MBMS data, and establishes or releases a user plane bearer for the multicast service transmission according to the BM-SC notification request; receives the IP multicast content from the BM-SC or other data source, and performs routing.
  • CSCFs 307 and HSS 309 are used to complete session establishment and authentication.
  • CSCFs Including: proxy CSCF (P-CSCF), check CSCF (I-CSCF), and monthly service CSCF (S-CSCF).
  • P-CSCF proxy CSCF
  • I-CSCF check CSCF
  • S-CSCF monthly service CSCF
  • the solution of the embodiment of the present invention can be applied when the session is initially established, and when the network area is moved during the session. Therefore, in order to describe the cartridge, the initial establishment session is combined with the process of the network region movement occurring during the session, and several specific embodiments are listed for the method for determining the bearer mode based on the networking system shown in FIG.
  • the UE has the multicast capability, and the service access network that initially establishes the session does not have the multicast capability.
  • the target access network has the multicast capability, that is, the UE is not supported.
  • the multicast area moves to an area that supports multicast. And assuming that the movement occurs, both the SGSN and the RAN have changed.
  • the SGSN and the RAN serving the access network are not RAN0 and SGSN0, and the SGSN and the RAN of the target access network are recorded as both the RAI and the SGSN1 having multicast capability.
  • the UE is required to acquire the multicast capabilities of the RAN and the SGSN at the same time.
  • the session is initially established, whether the multicast capability information sent by the UE is received, the data transmission in the unicast bearer mode is first established, and then the AS sends an inquiry about the multicast capability to the UE.
  • the UE acquires the multicast capability of the access network, the multicast capability of the RAN is acquired through the broadcast message of the RAN.
  • FIG. 4 is a flowchart of a method for determining a bearer mode according to Embodiment 1 of the present invention. Some steps in the process are the existing steps in the prior art, and the process of the present invention is highlighted. In FIG. 4, some of the same processes as those in the prior art are not described in detail, and The hexagonal coverage means information interaction, and the entity covered by the hexagon indicates that the interaction process is involved, and the other method flow diagrams in this paper are also processed in this way. The process includes the following steps:
  • the UE does not have the multicast capability, and then the UE determines that the integrated multicast capability does not have the multicast capability according to the acquired multicast capability of the SGSN0 and the RNO.
  • Step 404 When the session is initially established, the network side first establishes a unicast bearer data transmission for the UE.
  • step 405 to step 406 the AS initiates a query of the UE and the access network multicast capability to the UE, and the UE returns the integrated multicast capability to the AS to have no multicast capability.
  • the AS may initiate a query of the UE and the access network multicast capability to the UE through an Initial Session Protocol (SIP) notification (INFO) message or an SIP OPTIONS message, and the UE may use a SIP 200 OK message or the like.
  • SIP Initial Session Protocol
  • INFO Initial Session Protocol
  • SIP OPTIONS SIP 200 OK message or the like.
  • the AS returns the integrated multicast capability to have no multicast capability.
  • Step 407 the AS determines to continue to maintain the unicast bearer mode.
  • Step 408 During the session, the network area moves, and the UE moves from RAN0/SGSN0 to RAN1/SGSN1.
  • Step 409 to step 411 when the UE updates the route, the SGSN1 acquires the multicast capability, and obtains the multicast capability of the RAN1 from the broadcast message of the RAN1, and then the UE has the multicast capability according to the acquired multicast capabilities of the SGSN1 and the RAN1. And the multicast capability that it has, and determine the comprehensive multicast capability to have multicast capability.
  • Steps 412 to 414 the UE sends the information with the multicast capability to the AS according to the determined integrated multicast capability, and the AS returns an acknowledgement response message to the UE, and the AS determines that the multicast information is triggered by the UE.
  • the UE may send the multicast capable information to the AS through a SIP INFO message or a SIP OPTIONS message or the like, and the AS may return an acknowledgement response message to the UE through a SIP 200 OK message or the like.
  • Step 415 to step 416 the AS and the BM-SC prepare multicast transmission resources, download member information, and control downlink data transmission between the MRF and the BM-SC as needed.
  • Step 417 to step 419 the AS sends the multicast bearer mode establishment information to the UE, performs the bearer mode change, the UE joins the multicast group, and then performs the multicast bearer mode data transmission.
  • Steps 415 to 419 are also consistent with the processes in the prior art.
  • This embodiment is based on the first embodiment, and some changes are made.
  • the service access network that initially establishes the session does not have the multicast capability. It is assumed that the SGSN in which the service accesses the network has multicast capability, and the RAN does not have multicast. Capability, when the network area moves during the session, the target access network has multicast capability, and the RAN of the target access network has multicast capability. In this embodiment, when the movement occurs, only the RAN changes.
  • FIG. 5 is a flowchart of a method for determining a bearer mode according to Embodiment 2 of the present invention. The process includes the following steps:
  • step 501 to step 503 the UE acquires the multicast capability of the SGSN0 when the route is updated, and obtains that the RAN0 does not have the multicast capability from the broadcast message of the RAN0, and then the UE does not have the multicast capability according to the acquired multicast capability of the RAN0. , to determine the comprehensive multicast capability is not to have multicast capabilities.
  • Steps 504 to 508 are identical to the descriptions of steps 404 to 408 in the flow shown in FIG.
  • Step 509 to step 510 the UE obtains the multicast capability of the RAN1 from the broadcast message of the RAN1, and then the UE has the multicast capability according to the acquired multicast capability of the RAN1, and the SGSN0 obtained in step 501 has the multicast capability and Its own multicast capabilities, Determine the comprehensive multicast capability to have multicast capabilities.
  • Step 511 to step 518 are consistent with the description of steps 412 to 419 in the flow shown in FIG. 4, and the process is established for the multicast bearer mode.
  • the UE has the multicast capability
  • the service access network that initially establishes the session has the multicast capability.
  • the target access network does not have the multicast capability. It is also assumed that both the SGSN and the RAN change when the mobile occurs, and both the SGSN and the RAN serving the access network have multicast capability, and neither the SGSN nor the RAN of the target access network have multicast capability.
  • FIG. 6 is a flowchart of a method for determining a bearer mode according to Embodiment 3 of the present invention. The process includes the following steps:
  • Step 604 to step 607 when the session is initially established, the network side first establishes a data transmission of the unicast bearer mode for the UE. Then, the AS initiates a query of the UE and the access network multicast capability to the UE, and the UE returns the integrated multicast capability to the AS to have the multicast capability, so the AS determines to adopt the multicast bearer mode.
  • Steps 608 to 612 are consistent with the description of steps 412 to 419 in the flow shown in FIG. 4, and the process is established for the multicast bearer mode.
  • Step 613 During the session, the network area moves, and the UE moves from RAN0/SGSN0 to RAN1/SGSN1.
  • step 614 to step 616 when the routing domain is updated, the UE acquires that the SGSN1 does not have the multicast capability, and obtains that the RAN1 does not have the multicast capability from the broadcast message of the RAN1, and then the UE does not use the acquired multicast capabilities of the SGSN1 and the RAN1.
  • the integrated multicast capability is determined to have no multicast capability.
  • the method for obtaining the multicast capability of the SGSN1 may also be:
  • the SGSN1 sends its own multicast capability information to the SGSN0, and then the SGSN0 instructs the SGSN1 of the multicast capability information to the UE.
  • Step 617 to step 619 the UE sends the information that does not have the multicast capability to the AS according to the determined integrated multicast capability, and the AS returns an acknowledgement response message to the UE, and determines to adopt the unicast bearer mode.
  • Step 620 The AS notifies the network side to establish data transmission of the unicast bearer mode for the UE. In this step, the establishment of the unicast bearer mode is consistent with the process in the prior art.
  • the technical solution provided by the embodiment of the present invention can obtain not only the multicast capability of the UE but also the multicast capability of the access network, and then the session control entity can determine whether the multicast capability of the UE and the access network is determined.
  • the data transmission is performed by using the multicast bearer mode, thereby further avoiding the blindness of initiating the establishment of the multicast, and further, when the UE moves in the network area, the UE can select an appropriate bearer mode for data transmission.
  • an access network as a GPRS network.
  • the access network may also be an MBMS service for other networks, such as a wireless local area network (WLAN) network.
  • WLAN wireless local area network
  • the corresponding access network entity and the session control entity may be changed, and the corresponding access network entity and the session control entity may be changed.
  • anyone skilled in the art may perform equivalent implementation in other systems according to the idea of the embodiment of the present invention. Therefore, it is to be understood that the foregoing is only illustrative of specific embodiments of the present invention and is not intended to The scope of the present invention is intended to be included within the spirit and scope of the present invention, and any modifications, equivalents, improvements, etc., are included in the scope of the present invention.

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Abstract

La présente invention concerne un procédé de détermination du mode de portée. En l'occurrence, l'équipement utilisateur se procure l'information de capacité de diffusion à destinataires multiples concernant le réseau d'accès. Il transmet alors à l'entité de commande de session l'information de capacité de diffusion à destinataires multiples avec référence de portée en fonction de l'information de capacité de diffusion à destinataires multiples concernant le réseau d'accès et pour lui-même. L'entité de commande de session détermine le mode de portée de l'équipement utilisateur en fonction de l'information reçue concernant capacité de diffusion à destinataires multiples avec référence de portée. L'invention concerne également un système et un appareil correspondant au procédé. Grâce à eux, l'entité de commande de session peut se procurer l'information de capacité de diffusion à destinataires multiples pour l'équipement utilisateur et le réseau d'accès et choisir le mode de portée en fonction de cette capacité de diffusion à destinataires multiples.
PCT/CN2007/070770 2006-10-13 2007-09-25 Procédé, système et appareil pour déterminer le mode de portée WO2008046339A1 (fr)

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