CN100518390C - Method for establishing MBMS bearing face data transmission channel based on MBMS conversation - Google Patents

Method for establishing MBMS bearing face data transmission channel based on MBMS conversation Download PDF

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CN100518390C
CN100518390C CNB2007101436573A CN200710143657A CN100518390C CN 100518390 C CN100518390 C CN 100518390C CN B2007101436573 A CNB2007101436573 A CN B2007101436573A CN 200710143657 A CN200710143657 A CN 200710143657A CN 100518390 C CN100518390 C CN 100518390C
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mbms
multicast
data transmission
address
multimedia broadcast
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CN101110996A (en
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徐晓波
蔡建楠
王志海
涂小勇
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ZTE Corp
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ZTE Corp
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Abstract

The present invention provides a method for establishing a data transmission channel of the MBMS carrying surface based on MBMS conversation, which comprises the following steps that when the MBMS-GW receives the conversation starting request with MBMS service multicast address from the broadcast multicast service center, the MBMS-GW assigns a MBMS channel multicast address for the MBMS service multicast address as an IP address of the multicast data transmission channel between the access network base station and the MBMS-GW; the MBMS-GW sends the MBMS channel multicast address to all the access network base stations which are related, if the multicast data transmission channel of the access network base station is not established, the MBMS channel multicast address is used to initiate the entering request, to establish a multicast data transmission channel between the access network base station and the MBMS-GW; and for the MBMS service which is identified by the MBMS service multicast address, the MBMS-GW uses the multicast data transmission channel to send the data.

Description

The method of MBMS loading end data transmission channel is set up in session based on MBMS
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of based on broadcast group broadcast session set up the method for broadcasting multicast service (MBMS, Multimedia Broadcast/Multicast Service) loading end data transmission channel.
Background technology
In order to effectively utilize mobile network resource, existing mobile communication system has proposed to use the thought of multicast/broadcast transport service, i.e. MBMS.MBMS provides the point-to-multipoint service of a data source to a plurality of users send data in the mobile network, realize that Internet resources are shared, raising utilization rate of network resource, the interface resource of especially eating dishes without rice or wine.
IP-based mechanism and the method for setting up multicast and broadcasting service and transmission system that world standardization has been organized ietf definition.If basic ideas are meant the user and want to receive the multicast IP data message, need before the message distribution, add multicast group, multicast group is tree, is made up of a series of routers, and the top is multicast source, also is data source, and the bottom is each user.Multicast source is dealt into next stage with data, and all add the data gateway or the router of multicast group, and router continues data to be forwarded to the gateway or the router of next stage again, up to the user class of lowermost end.
The method that the user adds multicast group is to finish by the JOIN process of Internet igmpinternet (IGMP, Internet Group Management Protocol) or multicast listener discovery agreement (MLD, Multicast Listener Discovery).For the bearer network of IPV4, use IGMP JOIN process to add multicast group, for the bearer network of IPV6, add multicast group by MLD JOIN process.The basic ideas of JOIN process are:
Each multicast service (in a certain period) all has a unique multicast address, and this multicast address is distributed by multicast source, and the user is that the parameter application adds multicast group with this address;
Multicast router in the IP network sends to multicast source according to configuration information with this user's JOIN request, oneself is set to a multicast router in the route of this multicast service simultaneously; And
During the data source distribution, the node that only is set to this professional multicast router just can continue to send notebook data, and other routers all abandon this multicast data message.
Thereby, reached and limited the purpose that message unrestrictedly spreads distribution.
The JOIN request is initiated by the user in the path of multicast pattern, dynamically sets up.And generally realize by static configuration in the path of broadcast mode, does not need the user to add multicast group before each distribution of services.
No matter be multicast pattern, or broadcast mode, before professional the transmission, all have a session to begin request message and be delivered to network element each multicast path, distribute relevant resource to notify each network element from service source.Session begins message and comprises: multicast address information, session label information, the contents such as time that service region information, business begin to send; Network element receives session and begins message, can return a session and begin response message, and message is received in expression.
Session begins the message that message belongs to the signaling aspect, and the foundation of signaling paths static configuration is often finished.The business datum content belongs to the message of user level, and the foundation of data path can be to build by signaling, also can be to build by the IGMP/MLD agreement.
In order to set up the MBMS service path faster, reduce the waste of resource simultaneously, standardization body has developed the network architecture based on the MBMS of the evolution of next generation network framework (EMBMS), and some basic implementations.Fig. 1 is the network architecture schematic diagram of EMBMS.As shown in Figure 1, comprising:
ENodeB (Evolved NodeB) 102 is wireless access networks of evolution, and follow-on wireless access network can provide higher up-downgoing speed, lower transmission delay and reliable more wireless transmission;
MCE (Multi-Cell/Multicast Coordination Entity) 104 as the chain of command functional entity, is responsible for the chain of command signaling process, MBSFN (MBMS SingleFrequency Network) function and Radio Resource coordination etc.;
MBMS GW 106, MBMS gateway (MBMS GateWay), be divided into two parts in logic, one is the signaling plane processing section, by the contents such as conversation message of the processing of the Gmb interface shown in the figure from BM-SC, also can with the signaling content of MCE connection processing data sync aspect, another is user's face processing section of data, the data that BM-SC is sent send to the descending router of multicast group; And
BM-SC 108: broadcast multicast service center is as the distribution of the control of broadcast multicast service conversation, subscriber authorisation, safe key, and the convergent point of data source.
Wherein, BM-SC is connected with content service provider/broadcast group broadcast source (ContentProvider/Multicast Broadcast Source), finishes converging of data.
Basic ideas based on EMBMS business realizing mechanism are: the path of user level need be set up by IP multicast protocol (IGMP/MLD agreement).
An open question is at present: how to set up the muticast data transmission passage between eNodeB 102 and the MBMS-GW 106.Thereby, be badly in need of a kind of scheme, make user access service data and service switchover classification fast, and network resources waste is few as far as possible, safeguard simply, be convenient to the interpolation of new business.
Summary of the invention
Demand in view of prior art, the invention provides a kind of based on broadcast group broadcast session set up the method for broadcast multicast service carrier face data transmission channel, it is MBMS traffic assignments MBMS channel multicast address when session begins by MBMS-GW, by eNodeB use this channel multicast address build by the IGMP/MLD agreement and MBMS-GW between multicast channel.
The invention provides a kind of based on broadcast group broadcast session set up the method for broadcast multicast service carrier face data transmission channel, may further comprise the steps: step 1, when the multimedia broadcast-multicast service gateway receives that the session that carries the professional multicast address of MBMS from broadcast multicast service center begins to ask, the multimedia broadcast-multicast service gateway is a MBMS channel multicast of the professional multicast address assignment of MBMS address, as the IP address of the muticast data transmission passage between access network base stations and the multimedia broadcast-multicast service gateway; Step 2, the multimedia broadcast-multicast service gateway with MBMS channel multicast address pass to relevant access network base stations, if access network base stations is not set up the muticast data transmission passage as yet, then use MBMS channel multicast address to initiate, between access network base stations and multimedia broadcast-multicast service gateway, to set up a muticast data transmission passage into the group request; And step 3, for the MBMS business by the professional multicast address designation of MBMS, the multimedia broadcast-multicast service gateway uses the muticast data transmission passage to send data.
When the multimedia broadcast-multicast service gateway is the professional multicast address assignment of MBMS MBMS channel multicast address, set up the corresponding relation between professional multicast address of MBMS and the MBMS channel multicast address.
Wherein, the multimedia broadcast-multicast service gateway uses the muticast data transmission passage to send data to comprise: the multimedia broadcast-multicast service gateway receives MBMS multicast packet by the professional multicast address designation of MBMS from broadcast multicast service center; The multimedia broadcast-multicast service gateway is according to the MBMS channel multicast address of the professional multicast address search of MBMS to correspondence; And multimedia broadcast-multicast service gateway use MBMS channel multicast address encapsulation MBMS multicast packet, and the MBMS multicast packet after access network base stations is transmitted encapsulation.
The method that broadcast multicast service carrier face data transmission channel is set up in session based on broadcast group broadcast according to the present invention also comprises: after access network base stations receives MBMS multicast packet after the encapsulation from the multimedia broadcast-multicast service gateway, with the MBMS multicast packet deblocking after the encapsulation, to obtain the MBMS multicast packet; And access network base stations sends to corresponding user according to the professional multicast address of MBMS of sign MBMS multicast packet with the MBMS multicast packet.
When access network base stations build by the Internet igmpinternet and the multimedia broadcast-multicast service gateway between the muticast data transmission passage time, going into the group request is IGMP Join request; And when access network base stations find by multicast listener that agreement is built and the multimedia broadcast-multicast service gateway between the muticast data transmission passage time, going into the group request is MLD Join request.
Thereby, by the present invention, between eNodeB and MBMS-GW, set up a muticast data transmission passage, thereby make loading end resource between eNodeB and the MBMS-GW just setting up whenever necessary, effectively saved resource, improved usability.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing is used to provide further understanding of the present invention, and constitutes the part of specification, is used from explanation the present invention with embodiments of the invention one, is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the network architecture schematic diagram of EMBMS;
Fig. 2 be according to of the present invention based on broadcast group broadcast session set up the flow chart of the method for broadcast multicast service carrier face data transmission channel; And
Fig. 3 is based under the EMBMS network architecture schematic diagram that loading end between the ENodeB and MBMS-GW is set up process.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
The present invention distributes the channel multicast address by MBMS-GW respectively at each MBMS session, and pass to eNodeB by the session process of beginning, by eNodeB build by the IGMP/MLD agreement and MBMS-GW between the muticast data transmission passage, and by the relevant multicast packet of this multicast channel transmission.
Fig. 2 be according to of the present invention based on broadcast group broadcast session set up the flow chart of the method for broadcast multicast service carrier face data transmission channel.As shown in Figure 2, this method may further comprise the steps:
Step S202, when the multimedia broadcast-multicast service gateway receives that the session that carries the professional multicast address of MBMS from broadcast multicast service center begins to ask, the multimedia broadcast-multicast service gateway is a MBMS channel multicast of the professional multicast address assignment of MBMS address, as the IP address of the muticast data transmission passage between access network base stations and the multimedia broadcast-multicast service gateway;
Step S204, the multimedia broadcast-multicast service gateway with MBMS channel multicast address pass to relevant access network base stations, if access network base stations is not set up the muticast data transmission passage as yet, then use MBMS channel multicast address to go into the group request, between access network base stations and multimedia broadcast-multicast service gateway, to set up a muticast data transmission passage to initiation; And
Step S206, for the MBMS business by the professional multicast address designation of MBMS, the multimedia broadcast-multicast service gateway uses the muticast data transmission passage to send data.
When the multimedia broadcast-multicast service gateway is the professional multicast address assignment of MBMS MBMS channel multicast address, set up the corresponding relation between professional multicast address of MBMS and the MBMS channel multicast address.
Wherein, the multimedia broadcast-multicast service gateway uses the muticast data transmission passage to send data to comprise: the multimedia broadcast-multicast service gateway receives MBMS multicast packet by the professional multicast address designation of MBMS from broadcast multicast service center; The multimedia broadcast-multicast service gateway is according to the MBMS channel multicast address of the professional multicast address search of MBMS to correspondence; And multimedia broadcast-multicast service gateway use MBMS channel multicast address encapsulation MBMS multicast packet, and the MBMS multicast packet after access network base stations is transmitted encapsulation.
The method that broadcast multicast service carrier face data transmission channel is set up in session based on broadcast group broadcast according to the present invention also comprises: after access network base stations receives MBMS multicast packet after the encapsulation from the multimedia broadcast-multicast service gateway, with the MBMS multicast packet deblocking after the encapsulation, to obtain the MBMS multicast packet; And access network base stations sends to corresponding user according to the professional multicast address of MBMS of sign MBMS multicast packet with the MBMS multicast packet.
When access network base stations build by the Internet igmpinternet and the multimedia broadcast-multicast service gateway between the muticast data transmission passage time, going into the group request is IGMP Join request; And when access network base stations find by multicast listener that agreement is built and the multimedia broadcast-multicast service gateway between the muticast data transmission passage time, going into the group request is MLD Join request.
Fig. 3 is based under the EMBMS network architecture schematic diagram that loading end between the ENodeB and MBMS-GW is set up process, wherein, the bang path that session begins message has been set up in advance and has been finished, MBMS GW is the gateway that session begins the necessary approach of message, then MCE can transparent transmission message arrive relevant ENodeB, also can control and arrive which ENodeB, ENodeB is the last network element that arrives.As shown in Figure 3, this method comprises following key step:
Step S302, BM-SC send session and begin to ask MBMS GW, have carried the professional multicast address of MBMS in the request message at least, the MBMS coverage;
Step S304, MBMS GW identifies this message, returns session to BM-SC and begins response message;
Step S306, MBMS-GW find then to distribute a channel multicast address for it as yet not at this MBMS traffic assignments channel multicast address.And set up professional multicast address---the MBMS channel multicast address corresponding relation between the two of MBMS;
Step S308 carries out session and begins reciprocal process between MBMS-GW, MCE, the ENodeB, by this process, MBMS-GW is with the professional multicast address of MBMS, and parameters such as MBMS coverage, MBMS channel multicast address pass to eNodeB;
Step S310, eNodeB receives the channel multicast address, find not set up multicast channel as yet, then use this MBMS channel multicast address to initiate IGMP (IPv4) or MLD (IPv6) Join request and add multicast group, set up the muticast data transmission passage between this eNodeB and the MBMS-GW;
Step S312, BM-SC sends the MBMS multicast packet to MBMS-GW, and this multicast packet is identified by the professional multicast address of MBMS;
Step S314, after MBMS-GW receives the multicast message of BM-SC transmission, according to the professional multicast address search of MBMS MBMS channel multicast address, use MBMS channel multicast address to encapsulate this multicast data message, by MBMS multicast packet passage message is mail to each eNodeB; And
Step S316, eNodeB receives multicast message by this multicast packet passage from MBMS-GW, the multicast message decapsulation of MBMS channel multicast address will have been encapsulated, take out original MBMS multicast packet, eNodeB is according to the professional multicast address of MBMS of this multicast packet of sign, judges and transmits this multicast packet and give corresponding user.
In sum, adopt method of the present invention, can make quick access service data of user and service switchover classification, and network resources waste seldom, safeguard simply, be convenient to the interpolation of new business.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

  1. One kind based on broadcast group broadcast session set up the method for broadcast multicast service carrier face data transmission channel, it is characterized in that, may further comprise the steps:
    Step 1, when the multimedia broadcast-multicast service gateway receives that the session that carries the professional multicast address of MBMS from broadcast multicast service center begins to ask, described multimedia broadcast-multicast service gateway is a MBMS channel multicast of the professional multicast address assignment of described MBMS address, as the IP address of the muticast data transmission passage between described access network base stations and the described multimedia broadcast-multicast service gateway;
    Step 2, described multimedia broadcast-multicast service gateway with described MBMS channel multicast address pass to relevant access network base stations, if described access network base stations is not set up the muticast data transmission passage as yet, then use described MBMS channel multicast address to initiate, between described access network base stations and described multimedia broadcast-multicast service gateway, to set up a muticast data transmission passage into the group request; And
    Step 3, for the MBMS business by the professional multicast address designation of described MBMS, described multimedia broadcast-multicast service gateway uses described muticast data transmission passage to send data.
  2. 2. method according to claim 1, it is characterized in that, when described multimedia broadcast-multicast service gateway is the professional multicast address assignment of described MBMS MBMS channel multicast address, set up the corresponding relation between professional multicast address of described MBMS and the described MBMS channel multicast address.
  3. 3. method according to claim 1 and 2 is characterized in that, described multimedia broadcast-multicast service gateway uses described muticast data transmission passage transmission data to comprise:
    Described multimedia broadcast-multicast service gateway receives MBMS multicast packet by the professional multicast address designation of described MBMS from described broadcast multicast service center;
    Described multimedia broadcast-multicast service gateway is according to the described MBMS channel multicast address of the professional multicast address search of described MBMS to correspondence; And
    Described multimedia broadcast-multicast service gateway uses described MBMS channel multicast address to encapsulate described MBMS multicast packet, and the MBMS multicast packet after described access network base stations is transmitted encapsulation.
  4. 4. method according to claim 3 is characterized in that, also comprises:
    After described access network base stations receives MBMS multicast packet after the described encapsulation from described multimedia broadcast-multicast service gateway, with the MBMS multicast packet deblocking after the described encapsulation, to obtain described MBMS multicast packet; And
    Described access network base stations sends to corresponding user according to the professional multicast address of the MBMS of the described MBMS multicast packet of sign with described MBMS multicast packet.
  5. 5. method according to claim 1 and 2, it is characterized in that, when described access network base stations build by the Internet igmpinternet and described multimedia broadcast-multicast service gateway between described muticast data transmission passage the time, it is described that to go into the group request be the IGMPJoin request; And when described access network base stations find by multicast listener that agreement is built and described multimedia broadcast-multicast service gateway between described muticast data transmission passage the time, it is described that to go into the group request be MLD Join request.
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CN101883321B (en) * 2009-05-05 2014-03-19 中兴通讯股份有限公司 Method and system for acquiring access information and charging in multimedia broadcast multicast service
CN102857873B (en) * 2011-06-30 2017-02-08 中兴通讯股份有限公司 Wideband digital cluster system based on TD-LTE (time division-long term evolution) and data transmission method thereof
US9622049B2 (en) * 2014-07-10 2017-04-11 Alcatel Lucent Method and apparatus for providing dual protocol MBMS for facilitating IPV4 to IPV6 migration in E-UTRAN
CN109845216B (en) * 2016-11-29 2020-08-25 华为技术有限公司 Communication method and device

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