CN101394577B - Establishing method of multicast broadcast multimedia service user plane transmission path - Google Patents

Establishing method of multicast broadcast multimedia service user plane transmission path Download PDF

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Publication number
CN101394577B
CN101394577B CN200710030366.3A CN200710030366A CN101394577B CN 101394577 B CN101394577 B CN 101394577B CN 200710030366 A CN200710030366 A CN 200710030366A CN 101394577 B CN101394577 B CN 101394577B
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multicast
multimedia service
broadcast
end point
point identifier
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CN101394577A (en
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朱英
邱勇
黄敏
张宏卓
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2008/072404 priority patent/WO2009039772A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/54—Store-and-forward switching systems 
    • H04L12/56—Packet switching systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

The invention discloses a user plane transmission channel establishing method for a multicast broadcasting multimedia service, which comprises the following steps: a multicast broadcasting multimedia service gateway obtains a tunnel endpoint identification TEID and an IP multicast address, and establishes a GPRS tunnel protocol user plane transmission channel based on the TEID; and an evolution base station obtains the TEID and the IP multicast address, and establishes the GPRS tunnel protocol user plane transmission channel based on the TEID. A SAE/LTE evolution network is also disclosed at the same time and comprises the multicast broadcasting multimedia service gateway, a multicast coordination entity and the evolution base station. By using the user plane transmission channel establishing method, the processing of a user plane data packet can be simplified, and the processing load of the system can be reduced.

Description

Multicast broadcast multimedia service user plane transmission path establishing method
Technical field
Communication technical field of the present invention is specifically related to the SAE/LTE evolvement network, particularly a kind of multicast broadcast multimedia service user plane transmission path establishing method.
Background technology
Along with development of times, the user is more and more abundanter and diversified to the needs of type of service in the GSM.In the R6/R7 of WCDMA version; Introduced the MBMS multicast and broadcast multimedia service; The MBMS business is seen technically and is meant that network side is sending to a plurality of recipients in the network simultaneously with a multimedia service data; Correspondingly, one receives the professional user side of MBMS, can receive one or more broadcasting/packet services simultaneously.At present the MBMS business mainly comprises Streaming Media (for example video, video telephone etc.) and background business (for example text download).Generally the requirement for system is that user side can carry out other unicast services simultaneously when receiving the MBMS business.
SAE/LTE (System Architecture Evolution/Long Term Evolution; Evolvement network) be a kind of system architecture of flattening, in this system, the level of network node still less; E-UTRAN (Evolved Universal Territorial Radio Access Network; The universal land radio access web of evolution) only be made up of eNB (Evolved NodeB, evolution base station), eNB provides the realization of E-UTRAN user plane and chain of command protocol function.In this system, receive the professional quality of MBMS in order to guarantee the user, introduced notion (the Single Frequency Network of Single Frequency Network; SFN), it is characterized in that: the employing multi-carrier modulation technology (Orthogonal Frequency Division Multiplexing, OFDM); Professional for certain specific MBMS; Adopt specific sub-carrier frequencies, and necessarily identical Radio Resource is all used in all interior sub-districts of zone, and guarantee that the base station is when eating dishes without rice or wine to send MBMS business datum radio frames; The radio frames of same MBMS service data content is sent in all sub-districts in this panel region at synchronization; So just guaranteed that the UE that is in cell edge can merge the professional signal from the same MBMS of different districts, made the signal strength signal intensity that receives strengthen greatly, improved user's the quality of reception.
Fig. 1 is the MBMS logic framework among the SAE/LTE of prior art; In order to realize the folding of eating dishes without rice or wine; SAE/LTE has introduced a MCE (Multi-Cell/Multicast Coordination Entity; Multicast coordination entity) logic entity, the basic function of this entity are coordination and the configurations of accomplishing the interface-free resources of all eNB inside the SFN zone, make that the interface-free resources configuration of all eNB is identical.Also introduced a MBMS GW logic entity simultaneously; This entity is in BM-SC (Broadcast-Multicast ServiceCentre; Broadcast multicast service center) and between the eNB; It has two parts logic function, is respectively MBMSGW-CP (multicast broadcasting multimedia service gateway chain of command protocol entity) and MBMS GW-UP (multicast broadcasting multimedia service gateway user plane protocol entity), and wherein MBMS GW-CP is responsible for the relevant function of MBMS chain of command; The for example control of session initiation and session termination, MBMS GW-UP is responsible for the transmission of MBMS user face data.
In existing UMTS system, MBMS carries (being MBMS RAB) and comprises two parts: MBMSIu Data-carrying and MBMS empty port load-supporting (MBMS Iu data bearer, MBMS radio bearer).Wherein MBMS Iu Data-carrying refers to SGSN (Serving GPRS Supporting Node; Serving GPRS Support Node) and the MBMS user plane bearer between the RNC (base station controller), the MBMS empty port load-supporting refers to the MBMS user plane bearer between RNC and the UE.It is in the process that session is initiated, to set up that MBMS carries; The SGSN node is being received GGSN (Gate GPRS Supporting Node; GGSN) after Session Start (conversation request) message that node issues; Can send Session Start message toward all RNC nodes that this SGSN is connected; Can carry professional some the relevant attribute informations of MBMS in this message, for example Temporary Mobile Group Identity (TMGI), session identification (Session Identity), MBMS RAB (RAB, RAB) parameter, business service district etc.The RNC node can be preserved the professional attribute information of MBMS after receiving this message; And judge whether to set up corresponding M BMS according to these attribute informations and self state and carry; If RNC allows to set up MBMS and carries; Then return SessionStart success response message and in this message, comprise user plane transmission channel information element (Transport LayerInformation IE), otherwise return Session Start failure response message.After MBMS user plane transmission channel is set up well, SGSN will transmit on this passage toward the MBMS data that RNC issues.
Said MBMS user plane transmission channel refers to GTP-U tunnel (GPRS Tunnel Protocol user plane transmission channel), and each GTP tunnel of GTP-U comes unique identification by the IP address and the Tunnel End Point Identifier (TEID) of end points place entity.Each IP address is to there being a GTP-U protocol entity.TEID and MBMS RAB have man-to-man incidence relation; But different with unicast service is; Because MBMS carries and has for all UE, need not lean on RAB ID to identify the carrying of different UEs, can distinguish different MBMS RAB with professional or session identification.The MBMS business is the business of descending transmission; Therefore only need set up downlink tunnel, just as long as the RNC node provides its IP address and TEID to the SGSN node for each business, SGSN is before issuing data; Can stamp the GTP protocol header in the packet front, comprise TEID in the GTP protocol header.Transmission between SGSN and RNC is the mode that adopts IP point-to-point (PTP), therefore for same MBMS is professional, each meet carry the condition of setting up RNC all needs distribute separately IP address and TEID to SGSN.
In existing UMTS system; The IP unicast of point-to-point is adopted in transmission between SGSN and the RNC; IP address and TEID Tunnel Identifier that each RNC need provide oneself for certain business be to SGSN, if N RNC arranged, when SGSN hopes for this N RNC identical data to be provided; SGSN need be N GTP-U entity of this service creation (GPRS Tunnel Protocol entity); That is to say that SGSN need duplicate the N piece of data and send to corresponding RNC through each tunnel respectively, this has not only increased processing load and the buffering area load of SGSN, has also wasted transfer resource simultaneously in a large number.In addition; Because the MBMS multicast and broadcast multimedia service transport layer in the SAE/LTE system adopts the IP multicast mode; Promptly for certain MBMS is professional; MBMS GW uses specific I P multicast address to send same piece of data and gives all eNB that belongs to this IP multicast member; Therefore MBMS GW is same piece of data for the GPRS Tunnel Protocol data that each eNB constructed, and therefore, the implementation in existing UMTS system can't be applied to the foundation of the MBMS multicast broadcast multimedia service user plane transmission path in the SAE/LTE system.
Summary of the invention
Have mirror therewith, the main purpose of the embodiment of the invention is to be to provide a kind of multicast broadcast multimedia service user plane transmission path establishing method, is used for setting up multicast broadcast multimedia service user plane transmission path at the SAE/LTE evolvement network.
A kind of multicast broadcast multimedia service user plane transmission path establishing method of the embodiment of the invention comprises:
Multicast broadcasting multimedia service gateway MBMS GW obtains IP multicast address and Tunnel End Point Identifier TEID;
Evolution base station eNB is obtained said TEID and said IP multicast address, and creates GPRS Tunnel Protocol user plane transmission channel according to said TEID.
A kind of multicast broadcasting multimedia service gateway of the embodiment of the invention comprises:
Receiving element is used for the receiving multicast and broadcast service conversation request;
Receiving element is used for the receiving multicast and broadcast service conversation request;
TEID Tunnel End Point Identifier allocation units are used to the pairing multicast broadcast service session of said multicast broadcast service conversation request distribution T EID Tunnel End Point Identifier;
The transmission path establishing performance element is created GPRS Tunnel Protocol user plane transmission channel based on said TEID Tunnel End Point Identifier.
A kind of multicast coordination entity of the embodiment of the invention comprises:
Receiving element is used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address that comes from multicast broadcasting multimedia service gateway;
TEID Tunnel End Point Identifier allocation units are used to the many corresponding multicast and broadcast multimedia service distribution T EID Tunnel End Point Identifiers of said multicast and broadcast multimedia service conversation request;
First transmitting element is used for sending the multicast and broadcast multimedia service conversation request response message that carries said TEID Tunnel End Point Identifier to said multicast broadcasting multimedia service gateway;
Second transmitting element is used for sending the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said TEID Tunnel End Point Identifier to each evolution base station.
A kind of multicast broadcasting multimedia service gateway of the embodiment of the invention comprises:
First receiving element is used to receive the multicast and broadcast multimedia service conversation request from the multicast and broadcast multimedia service center;
Second receiving element is used to receive the multicast and broadcast multimedia service conversation request response message that carries the TEID Tunnel End Point Identifier from multicast coordination entity;
The transmission path establishing unit is used for creating GPRS Tunnel Protocol user plane transmission channel according to said TEID Tunnel End Point Identifier;
The IP multicast address allocation units are used to said multicast broadcast service conversation request distributing IP multicast address.
A kind of evolution base station of the embodiment of the invention is characterized in that, said evolution base station comprises:
Receiving element is used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address and TEID Tunnel End Point Identifier;
The transmission path establishing unit is used to preserve said IP multicast address, obtains said TEID Tunnel End Point Identifier, and creates GPRS Tunnel Protocol user plane transmission channel based on said TEID Tunnel End Point Identifier.
A kind of SAE/LTE evolvement network of the embodiment of the invention comprises multicast and broadcast multimedia service center, multicast broadcasting multimedia service gateway and evolution base station, it is characterized in that:
Said multicast broadcasting multimedia service gateway is used to obtain IP multicast address and Tunnel End Point Identifier TEID;
Said evolution base station is used to obtain said Tunnel End Point Identifier TEID and said IP multicast address, and creates GPRS Tunnel Protocol user plane transmission channel according to said Tunnel End Point Identifier TEID.
Embodiment of the present invention embodiment; Through multicast broadcasting multimedia service gateway is the pairing multicast and broadcast multimedia service session of multicast and broadcast multimedia service conversation request distribution T EID Tunnel End Point Identifier; Or be the pairing multicast and broadcast multimedia service session of multicast and broadcast multimedia service conversation request distribution T EID Tunnel End Point Identifier through multicast coordination entity; Multicast broadcasting multimedia service gateway is created the same GPRS Tunnel Protocol user plane transmission channel of corresponding each evolution base station based on the TEID Tunnel End Point Identifier that is distributed; Simplify the processing of user face data bag, alleviated the processing burden of system.
Description of drawings
Fig. 1 is the MBMS logic framework among the SAE/LTE of prior art;
Fig. 2 is that first embodiment of SAE/LTE evolvement network of the present invention forms sketch map;
Fig. 3 is that first embodiment of multicast broadcasting multimedia service gateway of the present invention forms sketch map;
Fig. 4 is that the embodiment of evolution base station of the present invention forms sketch map;
Fig. 5 is that second embodiment of SAE/LTE evolvement network of the present invention forms sketch map;
Fig. 6 is that second embodiment of multicast broadcasting multimedia service gateway of the present invention forms sketch map;
Fig. 7 is that the embodiment of multicast coordination entity of the present invention forms sketch map;
Fig. 8 is the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method first embodiment of the present invention;
Fig. 9 is the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method second embodiment of the present invention;
Figure 10 is the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method the 3rd embodiment of the present invention.
Embodiment
In order to make technical scheme of the present invention and advantage clearer, the embodiment of the invention is further elaborated below in conjunction with the accompanying drawing embodiment that develops simultaneously.
With reference to figure 2, be that first embodiment of SAE/LTE evolvement network of the present invention forms sketch map.Said SAE/LTE evolvement network mainly comprises multicast and broadcast multimedia service center 11, multicast broadcasting multimedia service gateway 12 and evolution base station 13, is described in detail respectively below:
Multicast and broadcast multimedia service center 11 is used to provide multicast and broadcast multimedia service.
Here, the functional definition at said multicast and broadcast multimedia service center 11 is identical with prior art, does not repeat them here.
Multicast broadcasting multimedia service gateway 12; Be used to receive multicast and broadcast multimedia service conversation request from said multicast and broadcast multimedia service center 11; Be said multicast and broadcast multimedia service conversation request many corresponding multicast and broadcast multimedia service session distributing IP multicast address and Tunnel End Point Identifier TEID; And create GPRS Tunnel Protocol user plane transmission channel, and send the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said TEID to each evolution base station based on said TEID.During concrete the realization,, be that first embodiment of multicast broadcasting multimedia service gateway of the present invention forms sketch map with reference to figure 3.Said multicast broadcasting multimedia service gateway 12 mainly comprises:
Receiving element 121 is used for the receiving multicast and broadcast service conversation request.
, also comprised the professional relevant attribute information with MBMS in the said conversation request here, this attribute information comprises Temporary Mobile Group Identity (TMGI), session identification (Session Identity), MBMS RAB parameter, business service district etc.After multicast broadcasting multimedia service gateway receives said multicast broadcast service conversation request, will preserve said attribute information, and create the service conversation context.
Transmission path establishing unit 122 is used to the pairing multicast broadcast service session of said multicast broadcast service conversation request distribution T EID, and creates GPRS Tunnel Protocol user plane transmission channel based on said TEID.During concrete the realization, said transmission path establishing unit 122 mainly comprises:
Tunnel End Point Identifier TEID allocation units 1221 are used to the pairing multicast broadcast service session of said multicast broadcast service conversation request distribution T EID.
Here, specifically how making up said TEID is key of the present invention, below corresponding description will be arranged for this reason.
Transmission path establishing performance element 1222, the TEID that is used for being distributed according to said Tunnel End Point Identifier TEID allocation units 1221 creates GPRS Tunnel Protocol user plane transmission channel.
Here; The GPRS Tunnel Protocol user plane transmission channel of said establishment is through corresponding TEID Tunnel End Point Identifier unique identification;, a MBMS business (both comprised voice conversation when comprising several sessions like the voice and video business; Also comprised video session), multicast broadcasting multimedia service gateway need be distributed corresponding TEID Tunnel End Point Identifier respectively, is used for each session of unique identification.
IP multicast address allocation units 123 are used to said multicast broadcast service conversation request distributing IP multicast address.
Transmitting element 124 is used for carrying said IP multicast address and said TEID to the evolution base station eNB transmission.
Evolution base station 13 is used to receive the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said TEID, preserves said IP multicast address, obtains said TEID, and creates GPRS Tunnel Protocol user plane transmission channel based on said TEID.During concrete the realization,, be that the embodiment of evolution base station of the present invention forms sketch map with reference to figure 4.Said evolution base station 13 mainly comprises:
Receiving element 131 is used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address and TEID.
Also comprised professional relevant attribute information in the said conversation request here, with MBMS.After eNB receives said multicast broadcast service conversation request, with preserving said and the professional relevant attribute information of MBMS, and establishment service conversation context.
Transmission path establishing unit 132 is used to preserve said IP multicast address, obtains said TEID, and creates GPRS Tunnel Protocol user plane transmission channel based on said TEID.
Here; If eNB allows for the pairing MBMS service conversation of said multicast and broadcast multimedia service conversation request and creates corresponding the carrying; Then distribute the necessary resource of MBMS service bearer; And preserve said IP multicast address, said TEID is set up incidence relation with corresponding GPRS Tunnel Protocol user plane transmission channel.
In conjunction with the description of preceding text, will describe accordingly the described TEID of the embodiment of the invention below, the described TEID of the embodiment of the invention must meet the following conditions:
At first, on eNB, need set up the man-to-man incidence relation that TEID Tunnel End Point Identifier and MBMS carry, so multicast broadcasting multimedia service gateway MBMS GW is necessary for different MBMS business or the different TEID of session structure.From MBMS GW, need be each business or GTP-U instance of session generation.
Secondly, eNB can receive the data of the different business that issues from different MBMS GW simultaneously, and the TEID that constructs for fear of different MBMS GW clashes on certain eNB, and requiring each MBMSGW is that the TEID that different business is constructed does not allow identical.
Once more; The TEID of unicast service on eNB distributed by eNB self; And the described scheme of the embodiment of the invention is that to distribute the professional receiving terminal node of MBMS by MBMS GW be the TEID on the eNB, and therefore requiring eNB is that the TEID that the TEID that distributes of unicast service and MBMS GW are the MBMS traffic assignments can not clash on the eNB node.
The embodiment of the invention in conjunction with foregoing description makes up the required satisfied condition of said TEID; To the construction method of TEID be illustrated below; Obviously those skilled in the art will be appreciated that; Concrete describing for example only is a kind of execution mode, and other similar TEID construction methods all should belong to protection range of the presently claimed invention.
Constructing plan one:
Stipulated that in existing GTP (GPRS Tunnel Protocol) TEID representes with four bytes; Professional in order to distinguish unicast service and MBMS; Can select one of them bit or certain several bit to represent that the GPRS protocol tunnel is used for transmitting unicast service or MBMS business; For example identify with highest order, 0 is expressed as the GPRS protocol tunnel that unicast service distributes, and 1 is expressed as the GPRS protocol tunnel that multicast service distributes; Perhaps identify with two bits wherein, 00 is expressed as the tunnel that unicast service distributes, and 01 is expressed as the tunnel of MBMS traffic assignments.So can not cause the eNB node is that the TEID that the TEID that distributes of unicast service and MBMS GW are the MBMS traffic assignments clashes on the eNB node.
For fear of different MBMS GW is the TEID generation conflict of different business or session structure; Can reserve wherein certain several bit and represent the sign of MBMS GW node, it is unique so just requiring the sign of each the MBMS GW node in network range.
At last, be the different TEID of different service or session structure in order to guarantee certain MBMS GW, then need generate unique sequence number and be filled on the remaining bit for certain business or session.Suppose except reserved place before, to also have the n position; Single-track link table of initial construction then; This initial chained list sorts according to the order from 0 to 2n, in the time of new business or session arrival, then gets the owner pointer sequence number pointed of current available chained list and also this sequence number is deleted from chained list; In the time of business or conversation end, the end of then its employed sequence number being inserted available chained list.This mode can not repeat through safeguarding the TEID that an available single-track link table guarantees that different business distributes.Except using the mode of single-track link table; Also can adopt the mode of array, its essence is identically, all be one of initial construction from 0 to 2n sequence number set; From current available sequence number set, select one then, add available sequence number set if certain sequence number is released again.
Shown in table; A kind of example for the described TEID structure of the embodiment of the invention; Wherein be up to 1 or 0 and represent it is to be the professional Tunnel Identifier that is distributed of MBMS; The 16-30 bit representation is distinguished the sign of different MBMS GW nodes, and remaining 0-15 bit table is shown unique sequence number of certain specific professional or session generation, and the method that generates unique serial number is to use the mode of the single-track link table of front description.
Those skilled in the art should be understood that; Except the description for example of table one; We also can use the bit of varying number and diverse location to represent content corresponding; For example use lowest order to be expressed as the professional Tunnel Identifier that is distributed of MBMS, perhaps use the bit of the diverse location of other length to represent the sign of MBMS GW node, perhaps use the bit of the diverse location of other length to represent the sequence number of different business.
Table one:
31 23 15 7 0
?1/0 MBMS?GW?ID
Constructing plan two:
At first and constructing plan one similar, reserve one of them bit or certain several bit and represent that the GPRS protocol tunnel is used for transmitting unicast service or MBMS business, repeats no more here.
In existing UMTS; BM-SC is unique for the professional Temporary Mobile Group Identity TMGI that is distributed of certain MBMS; TMGI=PLMN identity (3 byte)+Service ID (3 byte), wherein PLMN is public land mobile network (Pubic Land Mobile Network), even the MBMS business is from different PLMN; Perhaps different MBMS business is transmitted through different MBMS GW, can directly use this TMGI to divide into the TEID of MBMS traffic assignments and can not cause conflict.Because TMGI has taken 6 bytes, therefore need the length of expansion TEID.
In addition;, a business (comprises voice conversation and video session) when comprising a plurality of session like the voice and video business; BM-SC also can be used for identifying certain specific session in this business for certain session distributes a session identification Session Identity (1 byte); And tunnel is separately set up in different session meetings, therefore need distribute different TEID for different sessions.Because Session Identity also is unique in certain business, therefore can uses this equally and identify and construct unique TEID and can not cause conflict.Directly use this to identify and construct the length that TEID need expand TEID equally.
Shown in table two; TEID is extended to 8 bytes; Highest order is 1 or is that 0 expression is to be the professional Tunnel Identifier that is distributed of MBMS; Other position of highest byte is for keeping the position, and the 8-55 position is that TMGI fills with professional Temporary Mobile Group Identity, and the 0-7 position is that Session ID fills with the sign of professional session.
Those skilled in the art should be understood that; Except the describing for example of table two, byte location that Temporary Mobile Group Identity TMGI and Session ID are filled and differentiation be unicast service or the length of the bit of MBMS business and position can with table two described in different.For example reserve a minimum byte and use lowest order to represent to be the unicast service or the Tunnel Identifier of MBMS traffic assignments; TMGI is filled in the 16-63 position; Session ID is filled in the 8-15 position; Perhaps TMGI is filled in the 8-55 position, and SessionID is filled in the 56-63 position, perhaps uses other filling form.
Table two:
63 55 47 39 31 23 15 7 0
?0/1 TMGI ?Session?ID
With reference to figure 5, be that second embodiment of SAE/LTE evolvement network of the present invention forms sketch map.Said SAE/LTE evolvement network mainly comprises multicast and broadcast multimedia service center 21, multicast broadcasting multimedia service gateway 22, multicast coordination entity 24 and evolution base station 23, is described in detail respectively below:
Multicast and broadcast multimedia service center 21 is used to provide multicast and broadcast multimedia service.
Here, the functional definition at said multicast and broadcast multimedia service center 21 is identical with prior art, does not repeat them here.
Said multicast broadcasting multimedia service gateway 22; Be used to receive multicast and broadcast multimedia service conversation request from said multicast and broadcast multimedia service center 21; Be the corresponding multicast and broadcast multimedia service session distributing IP multicast address of said multicast and broadcast multimedia service conversation request, and send the multicast and broadcast multimedia service conversation request that carries said IP multicast address to said multicast coordination entity 24.During concrete the realization, be that second embodiment of multicast broadcasting multimedia service gateway of the present invention forms sketch map with reference to figure 7.Said multicast broadcasting multimedia service gateway 22 mainly comprises:
First receiving element 221 is used to receive the multicast and broadcast multimedia service conversation request from multicast and broadcast multimedia service center 21.
, also comprised the professional relevant attribute information with MBMS in the said conversation request here, this attribute information comprises Temporary Mobile Group Identity (TMGI), session identification (Session Identity), MBMS RAB parameter, business service district etc.After multicast broadcasting multimedia service gateway receives said multicast broadcast service conversation request, will preserve said attribute information, and create the service conversation context.
Second receiving element 223 is used to receive the multicast and broadcast multimedia service conversation request response message that carries Tunnel End Point Identifier TEID from multicast coordination entity.
Transmission path establishing unit 222 is used for creating GPRS Tunnel Protocol user plane transmission channel according to said Tunnel End Point Identifier TEID.
Similar with said transmission path establishing unit 1222, repeat no more at this.
IP multicast address allocation units 224 are used to said multicast broadcast service conversation request distributing IP multicast address.
Transmitting element 225 is used for sending the multicast and broadcast multimedia conversation request that carries said IP multicast address to said multicast coordination entity 24.
Multicast coordination entity 24; Be used to receive the multicast and broadcast multimedia service conversation request that carries said IP multicast address from said multicast broadcasting multimedia service gateway 22; Preserve said IP address; Be the pairing multicast and broadcast multimedia service session of said multicast and broadcast multimedia service conversation request distribution T EID; Send the multicast and broadcast multimedia service conversation request response message that carries said TEID to said multicast broadcasting multimedia service gateway 22, and carry said IP multicast address and said TEID multicast and broadcast multimedia service conversation request to each evolution base station 23 transmissions.During concrete the realization,, be that the embodiment of multicast coordination entity of the present invention forms sketch map with reference to figure 7.Said multicast coordination entity 24 mainly comprises:
Receiving element 241 is used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address that comes from multicast broadcasting multimedia service gateway.
After multicast coordination entity MCE receives said multicast broadcast service conversation request,, and create the service conversation context here, with IP multicast address
Tunnel End Point Identifier TEID allocation units 242 are used to the many corresponding multicast and broadcast multimedia service distribution T EID of said multicast and broadcast multimedia service conversation request.
Here, the construction method of said TEID is similar with the corresponding description of preamble, repeats no more at this.
First transmitting element 243 is used for sending the multicast and broadcast multimedia service conversation request response message that carries said TEID to said multicast broadcasting multimedia service gateway.
Second transmitting element 244 is used for sending the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said TEID to each evolution base station.
Evolution base station 23 is used to receive the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said TEID, preserves said IP multicast address, obtains said TEID, and creates GPRS Tunnel Protocol user plane transmission channel based on said TEID.Here, said evolution base station 23 is identical with aforementioned evolution base station 13, repeats no more at this.
With reference to figure 8, be the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method first embodiment of the present invention.The creation method of the multicast broadcast multimedia service user plane transmission path that present embodiment will be described; Corresponding to the described SAE/LTE evolvement network of first embodiment of SAE/LTE evolvement network of the present invention; Said SAE/LTE evolvement network comprises multicast and broadcast multimedia service center EBM-SC, MBMSGW and eNB; Wherein MBMS GW is made up of multicast and broadcast multimedia gateway user plane protocol entity MBMSGW-UP and multicast and broadcast multimedia gateway control face protocol entity MBMS GW-CP, and present embodiment mainly may further comprise the steps:
Step s1101, EBM-SC sends the multicast and broadcast multimedia service conversation request to MBMS GW-CP.
Step s1102, MBMS GW-CP creates session context, and preserves the professional relevant attribute information of MBMS.This attribute information comprises Temporary Mobile Group Identity (TMGI), session identification (Session Identity), MBMS RAB parameter, business service district etc.
Step s1103, MBMS GW-CP sends said multicast and broadcast multimedia service conversation request to MBMS GW-UP.
Here; If said MBMS GW-CP logic entity and said MBMS GW-UP logic entity are deployed in same network element node in network; Then the interface between them is an internal interface; Otherwise, if said MBMS GW-CP logic entity and said MBMS GW-UP logic entity at the different network element node of network meta, then the interface between them is an external interface.
Step s1104, MBMS GW-UP creates session context, distributing IP multicast address and TEID, and based on said TEID establishment GPRS Tunnel Protocol user plane transmission channel.
Here, the construction method of said TEID is identical or similar with the preamble description, repeats no more at this.
Step s1105, MBMS GW-UP send the multicast and broadcast multimedia service conversation request response that carries IP multicast address and TEID to MBMS GW-CP.
Step s1106, MBMS GW-CP send the multicast and broadcast multimedia service conversation request of carrying IP multicast address and TEID to eNB.
Step s1107, eNB creates session context, preserves IP multicast address, obtains TEIDTEID, creates GPRS tunnel user plane transmission channel based on said TEID.
Step s1108, eNB sends the response of multicast and broadcast multimedia service conversation request to MBMS GW-CP.
Here, if successfully create GPRS Tunnel Protocol user plane transmission channel, then eNB sends multicast and broadcast multimedia service conversation request success response message to MBMS GW-CP, otherwise, send failure response message.This failure response message is optional, and further, said step s1108 also is optional, promptly when concrete the realization, can not need said step s1108.
Step s1109, the eNB that successfully creates GPRS Tunnel Protocol user plane transmission channel sends IGMP join message to MBMSGW-UP.
Here, this message is optional, both when concrete the realization, can not need said step s1109.
With reference to figure 9, be the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method second embodiment of the present invention.May further comprise the steps:
Step s1201, EBM-SC sends the multicast and broadcast multimedia service conversation request to MBMS GW-CP
Step s1202, MBMS GW-CP creates session context, and preserves the professional relevant attribute information of MBMS.
Here, similar with said step s1102, repeat no more at this.
Step s1203, MBMS GW-CP is to MBMS GW-UP multicast and broadcast multimedia service conversation request.
Here, similar with said step s1103, repeat no more at this.
Step s1204, MBMS GW-UP creates session context, distributing IP multicast address and TEID, and based on said TEID establishment GPRS Tunnel Protocol user plane transmission channel.
Here, the construction method of said TEID is identical or similar with the preamble description, repeats no more at this.
Step s1205, MBMS GW-UP send the multicast and broadcast multimedia service conversation request response that carries IP multicast address and TEID to MBMS GW-CP.
Step s1206, MBMS GW-CP send the multicast and broadcast multimedia service conversation request that carries IP multicast address and TEID to multicast coordination entity MCE.
Here, said multicast and broadcast multimedia service conversation request has also further been carried the relevant attribute information of multicast and broadcast multimedia service session.
Step s1207, multicast coordination entity MCE send the multicast and broadcast multimedia service conversation request that carries IP multicast address and TEID to eNB.
Here, said multicast and broadcast multimedia service conversation request possibly carry other additional parameter information, like SFN (Single Frequency Network, Single Frequency Network) resource allocation information.
Step s1208 eNB creates session context, preserves IP multicast address, obtains TEID, creates GPRS tunnel user plane transmission channel based on said TEID.
Step s1209, eNB sends the response of multicast and broadcast multimedia service conversation request to MBMS GW-CP.
Here, if successfully create GPRS Tunnel Protocol user plane transmission channel, then eNB sends multicast and broadcast multimedia service conversation request success response message to MBMS GW-CP, otherwise, send failure response message.This failure response message is optional, and further, said step s1209 also is optional, promptly when concrete the realization, can not need said step s1209.
Step s1210, the eNB that successfully creates GPRS Tunnel Protocol user plane transmission channel sends IGMPjoin message to MBMSGW-UP.
Here, this message is optional, promptly when concrete the realization, can not need said step s1210.
With reference to Figure 10, be the composition sketch map of multicast broadcast multimedia service user plane transmission path establishing method the 3rd embodiment of the present invention.May further comprise the steps:
Step s1301, EBM-SC sends the multicast and broadcast multimedia service conversation request to MBMS GW-CP.
Step s1302, MBMS GW-CP creates session context, and preserves the professional relevant attribute information of MBMS.
Here, similar with said step s1102, repeat no more at this.
Step s1303, MBMS GW-CP is to MBMS GW-UP multicast and broadcast multimedia service conversation request.
Here, similar with said step s1103, repeat no more at this.
Step s1304, MBMS GW-UP creates session context, distributing IP multicast address.
Step s1305, MBMS GW-UP send the multicast and broadcast multimedia service conversation request response that carries IP multicast address to MBMS GW-CP.
Step s1306, MBMS GW-CP send the multicast and broadcast multimedia service conversation request that carries IP multicast address to multicast coordination entity MCE.
Here, said multicast and broadcast multimedia service conversation request has also further been carried the relevant attribute information of multicast and broadcast multimedia service session.
Step s1307, multicast coordination entity MCE creates session context, preserves IP multicast address, distribution T EID.
Here, the construction method of said TEID is identical or similar with the preamble description, repeats no more at this.
Step s1308, multicast coordination entity MCE send the conversation request response that carries TEID to MBMS GW-CP.
Step s1309, MBMS GW-CP send the message of the sign that carries the TEID endpoint of a tunnel to MBMS GW-UP.
Step s1310, MBMS GW-UP preserves TEID, and creates GPRS tunnel user plane transmission channel based on said TEID.
Step s1311, multicast coordination entity MCE send the multicast and broadcast multimedia service conversation request that carries IP multicast address and TEID to eNB.
Step s1312, eNB creates session context, preserves IP multicast address, obtains TEID, creates GPRS tunnel user plane transmission channel based on said TEID.
Step s1313, eNB sends the response of multicast and broadcast multimedia service conversation request to MBMS GW-CP.
Here, if successfully create GPRS Tunnel Protocol user plane transmission channel, then eNB sends multicast and broadcast multimedia service conversation request success response message to MBMS GW-CP, otherwise, send failure response message.This failure response message is optional, and further, said step s1313 also is optional, promptly when concrete the realization, can not need said step s1313.
Step s1314, the eNB that successfully creates GPRS Tunnel Protocol user plane transmission channel sends IGMP join message to MBMSGW-UP.
Here, this message is optional, promptly when concrete the realization, can not need said step s1314.
The priority of three steps of said step s1308 to s1310 and four steps of said step s1311 to s1314 not restriction smoothly during concrete the realization.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.

Claims (10)

1. a multicast broadcast multimedia service user plane transmission path establishing method is characterized in that, comprising:
Multicast broadcasting multimedia service gateway is obtained IP multicast address and Tunnel End Point Identifier TEID;
Wherein, Said IP multicast address is that said multicast broadcasting multimedia service gateway receives the multicast broadcast service conversation request from the multicast and broadcast multimedia service center, is the IP multicast address of the pairing multicast broadcast service session distribution of said multicast broadcast service conversation request;
Said Tunnel End Point Identifier TEID is that said multicast broadcasting multimedia service gateway is the Tunnel End Point Identifier TEID that the pairing multicast and broadcast multimedia service session of multicast broadcast service conversation request distributes, or is the Tunnel End Point Identifier TEID of the pairing multicast and broadcast multimedia service session distribution of multicast and broadcast multimedia service conversation request at multicast and broadcast multimedia service center for multicast coordination entity;
Evolution base station obtains said Tunnel End Point Identifier TEID and said IP multicast address, and creates GPRS Tunnel Protocol user plane transmission channel according to said Tunnel End Point Identifier TEID.
2. the method for claim 1; It is characterized in that; When said Tunnel End Point Identifier TEID be said multicast broadcasting multimedia service gateway be the pairing multicast and broadcast multimedia service session of multicast broadcast service conversation request distribute Tunnel End Point Identifier TEID the time, said evolution base station obtains said Tunnel End Point Identifier TEID and said IP multicast address further comprises:
Said evolution base station receives the said multicast and broadcast multimedia service conversation request that carries said IP multicast address and said Tunnel End Point Identifier TEID from said multicast broadcasting multimedia service gateway; Preserve said IP multicast address, obtain said Tunnel End Point Identifier TEID.
3. the method for claim 1; It is characterized in that; When said Tunnel End Point Identifier TEID be said multicast broadcasting multimedia service gateway be the pairing multicast and broadcast multimedia service session of multicast broadcast service conversation request distribute Tunnel End Point Identifier TEID the time, said evolution base station obtains said Tunnel End Point Identifier TEID and said IP multicast address further comprises:
Said multicast broadcasting multimedia service gateway is sent the multicast and broadcast multimedia service conversation request of carrying said IP multicast address and said Tunnel End Point Identifier TEID to multicast coordination entity;
Said evolution base station receives said service conversation request from said multicast coordination entity, preserves IP multicast address, obtains said Tunnel End Point Identifier TEID.
4. the method for claim 1 is characterized in that, said multicast coordination entity distributes Tunnel End Point Identifier TEID further to comprise:
Said multicast broadcasting multimedia service gateway is the pairing multicast and broadcast multimedia service session of the multicast and broadcast multimedia service conversation request distributing IP multicast address at multicast and broadcast multimedia service center;
The multicast and broadcast multimedia service conversation request of carrying said IP multicast address that multicast coordination entity receiving group broadcast multimedia business gateway sends;
Said multicast coordination entity is preserved said IP multicast address, for the pairing multicast and broadcast multimedia service session of said multicast and broadcast multimedia service conversation request distributes Tunnel End Point Identifier TEID.
5. method as claimed in claim 4 is characterized in that, after multicast coordination entity was distributed Tunnel End Point Identifier TEID, this method further comprised:
Multicast coordination entity is sent the multicast and broadcast multimedia service conversation request response of carrying said Tunnel End Point Identifier TEID to multicast broadcasting multimedia service gateway;
The multicast and broadcast multimedia service conversation request of carrying said Tunnel End Point Identifier TEID and said IP multicast address that multicast coordination entity is sent to evolution base station, evolution base station is preserved said IP multicast address, obtains said Tunnel End Point Identifier TEID.
6. a multicast broadcasting multimedia service gateway is characterized in that, comprising:
Receiving element is used for the receiving multicast and broadcast service conversation request;
Tunnel End Point Identifier TEID allocation units are used to the pairing multicast broadcast service session of said multicast broadcast service conversation request and distribute Tunnel End Point Identifier TEID;
The transmission path establishing performance element is created GPRS Tunnel Protocol user plane transmission channel based on said Tunnel End Point Identifier TEID;
The IP multicast address allocation units are used to the pairing multicast broadcast service session of said multicast broadcast service conversation request distributing IP multicast address;
Transmitting element is used for sending the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said Tunnel End Point Identifier TEID to evolution base station.
7. a multicast coordination entity is characterized in that, comprising:
Receiving element is used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address that comes from multicast broadcasting multimedia service gateway;
Tunnel End Point Identifier TEID allocation units are used to the corresponding multicast and broadcast multimedia service session of said multicast and broadcast multimedia service conversation request and distribute Tunnel End Point Identifier TEID;
First transmitting element is used for sending the multicast and broadcast multimedia service conversation request response message that carries said Tunnel End Point Identifier TEID to said multicast broadcasting multimedia service gateway;
Second transmitting element is used for sending the multicast and broadcast multimedia service conversation request that carries said IP multicast address and said Tunnel End Point Identifier TEID to each evolution base station.
8. a multicast broadcasting multimedia service gateway is characterized in that, comprising:
First receiving element is used to receive the multicast and broadcast multimedia service conversation request from the multicast and broadcast multimedia service center;
Second receiving element is used to receive the multicast and broadcast multimedia service conversation request response message that carries Tunnel End Point Identifier TEID from multicast coordination entity;
The transmission path establishing unit is used for creating GPRS Tunnel Protocol user plane transmission channel according to said Tunnel End Point Identifier TEID;
The IP multicast address allocation units are used to the pairing multicast and broadcast multimedia service session of said multicast broadcast service conversation request distributing IP multicast address.
9. an evolution base station is characterized in that, said evolution base station comprises:
Receiving element; Be used to receive the multicast and broadcast multimedia service conversation request that carries IP multicast address and Tunnel End Point Identifier TEID; Wherein, Said IP multicast address is that said multicast broadcasting multimedia service gateway receives the multicast broadcast service conversation request from the multicast and broadcast multimedia service center, is the IP multicast address of the pairing multicast broadcast service session distribution of said multicast broadcast service conversation request;
Said Tunnel End Point Identifier TEID is that said multicast broadcasting multimedia service gateway is the Tunnel End Point Identifier TEID that the pairing multicast and broadcast multimedia service session of multicast broadcast service conversation request distributes, or is the Tunnel End Point Identifier TEID of the pairing multicast and broadcast multimedia service session distribution of multicast and broadcast multimedia service conversation request at multicast and broadcast multimedia service center for multicast coordination entity;
The transmission path establishing unit is used to preserve said IP multicast address, obtains said Tunnel End Point Identifier TEID, and creates GPRS Tunnel Protocol user plane transmission channel based on said Tunnel End Point Identifier TEID.
10. a SAE/LTE evolvement network comprises multicast and broadcast multimedia service center, multicast broadcasting multimedia service gateway and evolution base station, it is characterized in that:
Said multicast broadcasting multimedia service gateway is used to obtain IP multicast address and Tunnel End Point Identifier TEID;
Wherein, Said IP multicast address is that said multicast broadcasting multimedia service gateway receives the multicast broadcast service conversation request from the multicast and broadcast multimedia service center, is the IP multicast address of the pairing multicast broadcast service session distribution of said multicast broadcast service conversation request;
Said Tunnel End Point Identifier TEID is that said multicast broadcasting multimedia service gateway is the Tunnel End Point Identifier TEID that the pairing multicast and broadcast multimedia service session of multicast broadcast service conversation request distributes, or is the Tunnel End Point Identifier TEID of the pairing multicast and broadcast multimedia service session distribution of multicast and broadcast multimedia service conversation request at multicast and broadcast multimedia service center for multicast coordination entity;
Said evolution base station is used to obtain said Tunnel End Point Identifier TEID and said IP multicast address, and creates GPRS Tunnel Protocol user plane transmission channel according to said Tunnel End Point Identifier TEID.
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