CN1452342A - Method for managing broadcast of multi-broadcast service source in mobile network - Google Patents
Method for managing broadcast of multi-broadcast service source in mobile network Download PDFInfo
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Abstract
A method for managing multicast source in mobile network includes extending the MBMS context for uniquely identifying a multicast service GGSN associated with a particular source, routing for multicast data, using multicast address ID dedicated for specific source multicast for the multicast service provided by mobile network, and adding multicast group by mobile network. When user requests multicast service, particular multicast source or target service region of multicast service can be defined. Its advantage is high efficiency of GGSN multicast.
Description
Technical field
The present invention relates to the management method in the multicast service source among the mobile network.
Background technology
In the mobile network, provide broadcast/multi broadcast business can make that the packet on the same paths is transmitted once by business tine in the network, rather than be transmitted repeatedly, thereby can save Internet resources by booking reader's number.The professional Managed Solution of broadcast/multi broadcast (MBMS) according to the proposition of the 3rd third-generation mobile communication cooperative association (3GPP), the management method of existing broadcast of multi-broadcast service source the mobile subscriber when the mobile network applies for multicast service, the user uses the MBMS context of being made up of Internet protocol (IP) multicast address and APN (APN) (MBMS Context) to come identification service, mobile network appliance Serving GPRS Support Node (SGSN) carries out the multicast service authorization check to the user, GGSN sets up the tunnel of multicast service for first user of the corresponding multicast service of application between GGSN and SGSN, share this tunnel so that apply for the subsequent user of this multicast service.Arrive on the interface (Gi interface) of broadcast of multi-broadcast service source network at GGSN, GGSN adopts any-source multi-cast (Any-Source Multicast) Routing Protocol to add the multicast group usually, the data that route network between multicast source and GGSN will specify the all-multicast source of multicast group to send all are sent to GGSN, and GGSN issues the user with the multicast group data that receive by the tunnel.If multicast service in the user applies mobile network after then GGSN need filter out the data in corresponding service source, multicast service district from the multi-case data of receiving, is transmitted to the user; If the multicast service on the user applies Internet, then GGSN gives the user with the all-multicast data forwarding of receiving.
From the above, the shortcoming of existing method is:
1, because existing method adopts the professional Routing Protocol model of any-source multi-cast on the Gi interface, make the interior user of multicast group will receive the data in the all-multicast source of this multicast group.This effective multicast model can't be avoided the multicast address conflict between multicast service, therefore may exist a plurality of multicast sources to use same multicast address to send data, causes the interference between multicast service; Also can't limit, make any multicast source all can send junk data to the multicast group to multicast source;
2,, can't satisfy the requirement that the user only wishes to receive the multi-case data that specific multicast source sends owing to only use ip multicast address and APN to identify multicast service in the existing method;
3, when GGSN answers the user to ask to add the multicast group, will receive the data that all service sources send in this group, only receive the requirement of specifying multicast source to send data if satisfy the user, GGSN needs garbled data, and this must reduce the treatment effeciency of GGSN; Simultaneously, the data that send in the all-multicast source in this group all are routed to GGSN, have also increased the load of Gi interface network;
4, for the multicast service of dividing the service area service, each service area may corresponding multicast service source, may have only the partial service district to have the user applies should business under the GGSN, and at this moment, GGSN only needs the data of the corresponding multicast source of these service areas.But when GGSN joins oneself in the multicast group of appointment, then this GGSN will receive the data of all service areas of this multicast service, therefore GGSN must screen data, the data of only transmitting current necessary service area are to the corresponding service district, the lot of data data screening will reduce the treatment effeciency of GGSN, also increase the load of Gi interface simultaneously;
Summary of the invention
The object of the present invention is to provide the management method of broadcast of multi-broadcast service source among a kind of mobile network efficiently, use this method can improve utilization efficiency of network resources, effectively reduce network load.
For achieving the above object, the management method of broadcast of multi-broadcast service source among the mobile network provided by the invention comprises:
(1) expansion BroadCast MultiCast Service (MBMS) context makes it can multicast service district of unique identification;
(2) network using between the inner multicast source of Gateway GPRS Support Node (GGSN) and mobile network supports the multicast route protocol of assigned source multicast (SSM, Source-Specific Multicast) model to carry out the multi-case data route;
(3) multicast service that provides for the mobile network adopts assigned source multicast (SSM) model dedicated multicast address designation;
(4) the appointment multicast service in the user applies network, and receive the multicast service of appointment from network.
Described method also comprises: for the multicast source in the Internet (Internet), add the multicast group according to specifying multicast source (SSM) model to send multicast route protocol.
The described expansion BroadCast MultiCast Service of step (1) (MBMS) context is the multicast source information that increases in the MBMS context.
Described step (3) also comprises: for the mobile network provide can not the limiting multicast source multicast service, adopt common multicast address sign;
The described user applies of step (5) also activates the process that the interior appointment multicast service of network comprises the multicast service in the following user applies mobile network:
(51) user sends to Serving GPRS Support Node (SGSN) and activates packet data protocol (PDP) context request (Activate PDP Context Request) message, comprise the MBMS context in the message, the pdp address in the message is for specifying the ip multicast address of multicast service;
(52) SGSN selects GGSN according to the APN in the message (APN), judge whether to be connected with one on the ground of the corresponding multicast service of MBMS context, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, change step (53) then, otherwise directly change step (55);
(53) GGSN takes out multicast service district sign from the MBMS context, and parses the IP address ip src of the corresponding multicast source of purpose multicast service;
(54) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " adding the multicast group " request, to subscribe to one by ip multicast address and multicast source address uniquely identified multicast channel;
(55) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies mobile network finishes.
The described user applies of step (5) also activates the process that the interior appointment multicast service of network comprises the multicast service in the following user applies the Internet (Internet):
(61) user sends to SGSN and activates PDP Context request (Activate PDP ContextRequest) message, comprises the MBMS context in the message, and the pdp address in the message is for specifying the ip multicast address of multicast service;
(62) SGSN selects GGSN according to the APN in the message (APN), judge whether to be connected with one on the ground of the corresponding multicast service of MBMS context, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, change step (63) then, otherwise directly change step (65);
(63) if the MBMS context comprises the multicast source host information, GGSN takes out the multicast source host information from the MBMS context, judge whether the address into IP, as not being, then it is treated as host domain name, parse multicast source IP address ip src by domain name system (DNS); In this way, do not carry out dns resolution; Do not comprise the multicast source host information as the MBMS context, also do not carry out dns resolution, the multicast source host IP address is empty;
(64) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " adding the multicast group " request; When the multicast source IP address is not empty, and when route network is supported assigned source multicast pattern fully between GGSN and multicast source, GGSN has just subscribed to one by ip multicast address and multicast source address uniquely identified multicast channel, and the corresponding multicast source that multicast network requires GGSN in this multicast group sends multi-case data and routes to GGSN; As the multicast source address is empty, when perhaps assigned source multicast pattern is not supported or not exclusively supported to route network between GGSN and multicast source, the Internet network will adopt any-source multi-cast pattern routing multicast data, the data in all-multicast source all will route to GGSN in this multicast group, specified multicast source as the user in the MBMS context, then GGSN need filter out the data forwarding of specifying multicast source to send and give the user; Do not specify multicast source as the user in MBMS Context, then GGSN will transmit the multi-case data that all receive to the multicast message of having set up;
(65) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies the Internet finishes.
Described method comprises that also following user discharges the process of multicast service:
(71) user sends to SGSN and discharges multicast service request (Detach Request) message;
(72) SGSN checks the multicast service tunnel that whether also has between shared SGNS of user and GGSN, after if the active user discharges, this multicast message no user is shared, then SGSN sends deletion PDP Context request (Delete PDP Context Request) message to GGSN, and the GGSN deletion sends deletion PDP Context response (Delete PDP Context Response) message to SGSN after specifying the tunnel; As also having the user using this tunnel, then change step (74);
(73) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " leaving the multicast group " request, stops forwarding the tunnel of data to step (72) deletion then, and the user stops to receive multi-case data;
(74) process that discharges multicast service finishes.
Compare with existing method, because the present invention carries out the multi-case data route with the multicast route protocol of supporting assigned source multicast (SSM) model, and expanded original BroadCast MultiCast Service (MBMS) context, make it can multicast service district of unique identification, when making cast service data on receiving network, the user can specify multicast source, thereby receives only the multi-case data that specific multicast source sends, and avoids receiving junk data; When the receiving multicast traffic data, can be by multicast source and the unique definite multicast channel of multicast group address, the user who subscribes to this passage only receives the multi-case data that passage is interior, has avoided the phase mutual interference between each business; Owing to used assigned source multicast pattern routing multicast data, make GGSN need not receive the data in a multicast group all-multicast source, multicast service for the subregion service, GGSN also can receive only the data that the current multicast source that the user area arranged sends, reduced redundant data at the transmission of multicast network and GGSN to the processing of redundant data workload, thereby improve GGSN multicast treatment effeciency, reduced the network interface load.
Description of drawings
Fig. 1 is the embodiment flow chart of the method for the invention;
Fig. 2 is a network structure of realizing the MBMS business.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
For broadcast/multi broadcast business efficiently is provided, the MBMS business has been proposed among the 3GPP in the mobile network.The network configuration that can realize the MBMS business is with reference to figure 2, in structure shown in Figure 2, GGSN and multicast source interface are the Gi interface, and described multicast source comprises broadcast/multi broadcast business center (MB-SC), the multicast/broadcast source (Broadcast/Multicast Source) of Internet network, the interior multicast/broadcast source of mobile network among this figure.For carrying out the region feature business, the multicast service that MBMS allows to provide in the mobile network provides service by subregion, and different multicast services are distinguished the data of sending out may be different.
For improving the load of mobile network's multicast treatment effeciency and reduction ip multicast network.The present invention proposes a kind of multicast source administrative skill scheme, realize the data of multicast source specific in user's selective reception multicast group simultaneously, specific embodiment is with reference to figure 1.According to Fig. 1, in step 1, the parameter of expansion MBMS context (MBMS Context) increases the multicast source information parameter, makes it that ability of specifying multicast source that provides is provided.Multicast source can be purpose multicast service district sign or multicast source host information, by the multicast service in " IP multicast address, APN (APN) and purpose multicast service district " three multicast service districts of parameter unique identification; The multicast service that sends by " IP multicast address, APN and multicast source host information " unique identification one multicast source.Make the network between GGSN and multicast source carry out the multi-case data route then by the assigned source effective multicast model.Therefore need to realize the multicast route of network between the multicast route of network between the inner multicast source of GGSN and mobile network and the multicast source on realization GGSN and the Internet.
The multicast source of mobile network inside comprises the multicast source (Broadcast/Multicast Source) of mobile service center (MB-SC) and mobile network inside.Network between the inner multicast source of GGSN and mobile network carries out networking and configuration in step 2 by assigned source multicast (SSM) model, and adopt and support the multicast route protocol of assigned source effective multicast model to carry out the multi-case data route, for example use the PIM-SM Routing Protocols such as (Protocol Independent Multicast-Sparse Mode) of version 2.
In step 3, the multicast service that is provided by the mobile network adopts assigned source effective multicast model dedicated multicast address designation, such address is the part in the multicast address section, this address field scope is among the IPv4: 232.0.0.0 to 232.255.255.255, prefix is that the address of FF3X ∷ and FF2X ∷ is such address among the IPv6.Part can not the limiting multicast source special multicast service still adopt common multicast address, for example: utilize multicast to realize the group chatting business, or group's meeting etc.Because SSM effective multicast model and common any-source multi-cast (Any-Source Multicast) compatibility be not Gu influence carrying out of this class business.
Because in assigned source multicast route pattern, by multicast source and the unique definite multicast channel (channel) of multicast group address, the user who subscribes to this passage only receives the multi-case data that passage is interior.So, adopt assigned source multicast pattern route, avoided the interference between each business.
The professional multicast service that allows of MBMS is pressed multicast service district (Multicast Area) subregion service, the data difference in different business district, and the subregion service may adopt a plurality of multicast sources to send data.Adopt assigned source multicast pattern route, GGSN only need add has the user receiving in the multicast channel of those multicast service district correspondences of service, receive only the multi-case data in these multicast service districts, therefore can improve GGSN multicast treatment effeciency and reduce Gi interface network load.
Though the uncontrollable and planning of multicast route protocol that network uses between the multicast source (Broadcast/Multicast Source) in GGSN and the Internet net, but for the advantage of utilizing the assigned source multicast and with meet multicast future development trend, in step 4, GGSN still presses the SSM model and sends multicast route protocol adding multicast group, that is: when GGSN knows multicast source information, in " adding the multicast group " message, specify multicast source.
If network support assigned source multicast pattern and user have specified multicast source between the multicast source of GGSN and Internet net, then GGSN will only receive the data that assigned source sends, to improve GGSN multicast treatment effeciency and network load.If assigned source multicast pattern is not supported or not exclusively supported to network between the multicast source of GGSN and Internet net, the Internet network will adopt any-source multi-cast pattern routing multicast data, and the data in all-multicast source all will route to GGSN in this multicast group.If the user has specified multicast source in MBMSContext, then GGSN need finish the work of data screening, sends the user to avoid junk data; If the user does not specify multicast source in MBMS Context, then GGSN will transmit the multi-case data that all receive to the user.
Based on above step, the user can be at the appointment multicast service in step 5 log on, and receives the multicast service of appointment from network.This step comprises the process of the multicast service in the user applies mobile network, the process of the multicast service in user applies the Internet (Internet) and the process that the user discharges multicast service when specific implementation.
The flow process of the multicast service in the user applies mobile network is with reference to following step, comprises subregion and the subregion multicast service of serving not:
A1) user sends and activates PDP Context request (Activate PDP Context Request) message to SGSN, pdp address in the message is for specifying the ip multicast address of multicast service, comprised MBMS Context in the message, when the user has specified purpose multicast service district, MBMS Context comprises the purpose multicast service district sign of user's appointment, do not specify purpose multicast service district as the user, SGSN will add the sign in multicast service district, user's current location place in MBMS Context.For the multicast service of the service of subregion not,, perhaps fill in this professional service source host domain name and identify as the multicast service district by SGSN as the Business Processing of having only a multicast service district;
A2) carry out multicast security (Security) operation; This step is an optional step, also can not carry out in the reality;
A3) SGSN checks user's multicast service CAMEL-Subscription-Information, to determine that whether authorized user is to the access of multicast service.To be the user carrying out that GPRS adheres to or sending to SGSN from homing position stockpile device (HLR) during Routing Area Update CAMEL-Subscription-Information.As the multicast service of the signatory desire application of user, operator can determine whether authorized user inserts this multicast service;
A4) and common establishment PDP Context process similar, SGSN selects GGSN according to the APN in the message (APN), judge whether to be connected with first of the corresponding multicast service of MBMSContext, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, make the follow-up connection of this MBMS Context share the tunnel of setting up for this multicast service for the first time, change steps A 5 then), otherwise directly change steps A 7);
A5) GGSN takes out multicast service district sign from MBMS Context, and parsing the IP address ip src of the corresponding multicast source of purpose multicast service, concrete parse operation can be used DNS inquiry, GGSN fixed configurations or MB-SC to broadcast methods such as service area and multicast source corresponding relation to GGSN and realize;
A6) GGSN uses the multicast route protocol of supporting assigned source multicast pattern, sends " adding the multicast group " request, to subscribe to one by ip multicast address and multicast source address uniquely identified multicast channel (channel).The corresponding multicast source that multicast network requires GGSN in this multicast group sends multi-case data and routes to GGSN, and in the multicast message of having set up, the user of application multicast service can receive multi-case data to GGSN with the data forwarding of corresponding multicast source
A7) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies mobile network finishes.
The following step of multicast service flow process reference of user applies Internet network:
B1) user sends and activates PDP Context request (Activate PDP Context Request) message to SGSN, and the pdp address in the message has comprised MBMS Context for specifying the ip multicast address of multicast service in the message.MBMS Context may attach the multicast source host information of user's appointment, also may comprise port numbers; The multicast source host information is multicast source host domain name or its IP address;
B2) carry out multicast security (Security) operation, this step is an optional step, also can not carry out in the reality;
B3) SGSN checks user's multicast service CAMEL-Subscription-Information, to determine that whether authorized user is to the access of multicast service.To be the user carrying out that GPRS adheres to or sending to SGSN from homing position stockpile device (HLR) during Routing Area Update CAMEL-Subscription-Information.As the multicast service of the signatory desire application of user, operator can determine whether authorized user inserts this multicast service;
B4) and common establishment PDP Context process similar, SGSN selects GGSN according to APN, judge whether to be connected with first of the corresponding multicast service of MBMS context, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, change step B5 then), otherwise directly change step B7);
B5) if MBMS Context comprises the multicast source host information, GGSN takes out the multicast source host information from MBMSContext, judges whether the address into IP, if not, then with it as host domain name, go out multicast source IP address ip src by dns resolution; If, do not carry out dns resolution, if MBMS Context does not comprise the multicast source host information, do not carry out dns resolution yet, the multicast source host IP address is empty, expression is not made requirement for restriction to multicast source;
B6) GGSN uses the multicast route protocol of supporting assigned source multicast pattern, send " adding the multicast group " request, when the multicast source IP address is not empty, and when route network is supported assigned source multicast pattern fully between GGSN and multicast source, GGSN has just subscribed to one by ip multicast address and multicast source address uniquely identified multicast channel (channel), and the corresponding multicast source that multicast network requires GGSN in this multicast group sends multi-case data and routes to GGSN; If the multicast source address is empty, when perhaps assigned source multicast pattern is not supported or not exclusively supported to route network between GGSN and multicast source, the Internet network will adopt any-source multi-cast pattern routing multicast data, the data in all-multicast source all will route to GGSN in this multicast group, in this case, if the user has specified multicast source in MBMS Context, then GGSN need filter out the data forwarding of specifying multicast source to send and give the user; Do not specify multicast source as the user in MBMSContext, then GGSN will transmit the multi-case data that all receive to the multicast message of having set up;
B7) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies the Internet finishes.
The user discharges the following step of process reference of multicast service:
C1) user sends to SGSN and discharges multicast service request (Detach Request) message;
C2) SGSN checks the multicast service tunnel that whether also has between shared SGNS of user and GGSN, after if the active user discharges, this multicast message no user is shared, and then SGSN will initiate deletion PDP Context request (Delete PDP Context Request) to GGSN, with the deletion tunnel; As also having the user using this tunnel, then change step C4 and handle;
C3) GGSN adopt to support the multicast route protocol of assigned source multicast pattern, sends " leaving the multicast group " request, stops forwarding data then to step C2) tunnel deleted, the user stops to receive multi-case data;
C4) process that discharges multicast service finishes.
Claims (9)
1, the management method of broadcast of multi-broadcast service source among a kind of mobile network comprises:
(1) expansion BroadCast MultiCast Service (MBMS) context makes it can multicast service district of unique identification;
(2) network using between the inner multicast source of Gateway GPRS Support Node (GGSN) and mobile network supports the multicast route protocol of assigned source multicast (SSM, Source-Specific Multicast) model to carry out the multi-case data route;
(3) multicast service that provides for the mobile network adopts assigned source multicast (SSM) model dedicated multicast address designation;
(4) the appointment multicast service in the user applies network, and receive the multicast service of appointment from network.
2, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 1 is characterized in that described method also comprises: for the multicast source in the Internet (Internet), GGSN adds the multicast group according to assigned source multicast (SSM) model mode.
3, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 2, it is characterized in that: the described expansion BroadCast MultiCast Service of step (1) (MBMS) context is to increase multicast source host information or purpose multicast service district parameter in the MBMS context.
4, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 3 is characterized in that described step (3) also comprises: for the mobile network provide can not the limiting multicast source multicast service, adopt common multicast address sign.
5,, it is characterized in that the interior appointment multicast service of the described user applies network of step (4) comprises the process of the multicast service in the following user applies mobile network according to the management method of broadcast of multi-broadcast service source among claim 1,2, the 3 or 4 described mobile networks:
(51) user sends to Serving GPRS Support Node (SGSN) and activates packet data protocol (PDP) context request (Activate PDP Context Request) message, comprise the MBMS context in the message, the pdp address in the message is for specifying the ip multicast address of multicast service;
(52) SGSN selects GGSN according to the APN in the message (APN), judge whether to be connected with first of the corresponding multicast service of MBMS context, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, change step (53) then, otherwise directly change step (55);
(53) GGSN takes out multicast service district sign from the MBMS context, and parses the IP address ip src of the corresponding multicast source of purpose multicast service;
(54) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " adding the multicast group " request, to subscribe to one by ip multicast address and multicast source address uniquely identified multicast channel;
(55) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies mobile network finishes.
6, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 5 is characterized in that: in step (51), comprise the purpose multicast service district sign of user's appointment in the MBMS context; If the user does not specify purpose multicast service district, SGSN will add the sign in multicast service district, user's current location place in the MBMS context.
7, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 6, it is characterized in that: in step (51), multicast service for the service of subregion not, multicast service as the subregion service of having only a multicast service district is handled, and perhaps fills in this professional service source host domain name by SGSN and identifies as the multicast service district.
8, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 7 is characterized in that the interior appointment multicast service of the described user applies network of step (5) comprises the process of the multicast service in the following user applies the Internet (Internet):
(81) user sends to SGSN and activates PDP Context request (Activate PDP ContextRequest) message, comprises the MBMS context in the message, and the pdp address in the message is for specifying the ip multicast address of multicast service;
(82) SGSN selects GGSN according to the APN in the message (APN), judge whether to be connected with first of the corresponding multicast service of MBMS context, if, then between SGSN and GGSN, set up GPRS Tunnel Protocol (GTP) tunnel for this multicast service, change step (83) then, otherwise directly change step (85);
(83) if the MBMS context comprises the multicast source host information, GGSN takes out the multicast source host information from the MBMS context, judge whether the address into IP, as not being, then it is treated as host domain name, parse multicast source IP address ip src by domain name system (DNS); In this way, do not carry out dns resolution; Do not comprise the multicast source host information as the MBMS context, also do not carry out dns resolution, the multicast source host IP address is empty;
(84) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " adding the multicast group " request; When the multicast source IP address is not empty, and when route network is supported assigned source multicast pattern fully between GGSN and multicast source, GGSN has just subscribed to one by ip multicast address and multicast source address uniquely identified multicast channel, and the corresponding multicast source that multicast network requires GGSN in this multicast group sends multi-case data and routes to GGSN; As the multicast source address is empty, when perhaps assigned source multicast pattern is not supported or not exclusively supported to route network between GGSN and multicast source, the Internet network will adopt any-source multi-cast pattern routing multicast data, the data in all-multicast source all will route to GGSN in this multicast group, specified multicast source as the user in the MBMS context, then GGSN need filter out the data forwarding of specifying multicast source to send and give the user; Do not specify multicast source as the user in MBMS Context, then GGSN will transmit the multi-case data that all receive to the multicast message of having set up;
(85) user receives from SGSN and activates PDP Context reception (Activate PDP ContextAccept) message, and the process of the multicast service in the user applies the Internet finishes.
9, the management method of broadcast of multi-broadcast service source among the mobile network according to claim 8 is characterized in that described method comprises that also following user discharges the process of multicast service:
(91) user sends to SGSN and discharges multicast service request (Detach Request) message;
(92) SGSN checks the multicast service tunnel that whether also has between shared SGNS of user and GGSN, after if the active user discharges, this multicast message no user is shared, then SGSN sends deletion PDP Context request (Delete PDP Context Request) message to GGSN, and the GGSN deletion sends deletion PDP Context response (Delete PDP Context Response) message to SGSN after specifying the tunnel; As also having the user using this tunnel, then change step (94);
(93) GGSN adopts the multicast route protocol of supporting assigned source multicast pattern, sends " leaving the multicast group " request, stops forwarding the tunnel of data to step (92) deletion then, and the user stops to receive multi-case data;
(94) process that discharges multicast service finishes.
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WO2005101859A1 (en) * | 2004-04-16 | 2005-10-27 | Huawei Technologies Co., Ltd. | Implementing method for traffic transmission carrying and multimedia broadcasting multicast service |
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