CN100558041C

CN100558041C - Multicast and broadcast system

Info

Publication number: CN100558041C
Application number: CNB2006101522201A
Authority: CN
Inventors: 郑若滨
Original assignee: Huawei Technologies Co Ltd
Current assignee: Guangdong Gaohang Intellectual Property Operation Co ltd; Suzhou Gonghu Precision Manufacturing Industry Development Co ltd
Priority date: 2006-09-20
Filing date: 2006-09-20
Publication date: 2009-11-04
Anticipated expiration: 2026-09-20
Also published as: WO2008040244A1; CN101150422A

Abstract

The invention provides a kind of multicast and broadcast system, this system mainly comprises: MBSC (multicast and broadcast controller) and MBS CS (multicast and broadcast content server), wherein, MBSC: be connected with MBS CS, managing multicast broadcast service MBS session information, the transmission of control MBS business tine is for user equipment (UE) provides authentication; MBS CS: under the control of MBSC, the MBS business tine that receives is converted to multicast/broadcast IP and flows, and this multicast/broadcast IP stream is sent to Access Network.Utilize the present invention, thereby can realize by WiMAX (the inserting of microwave whole world is interconnected), DSL BWA (broadband wireless access) network developing multicast broadcasting services such as (Digital Subscriber Line).

Description

Multicast and broadcast system

Technical field

The present invention relates to network communication field, relate in particular to a kind of multicast and broadcast system.

Background technology

The network architecture as shown in Figure 1 based on the WiMAX (World Interoperabilityfor Microwave Access, the inserting of microwave whole world is interconnected) of MS (Mobile Station, mobile radio station).MS connects by the BS (BaseStation, base station) (not marking among Fig. 1) among R1 reference point and the ASN (Access Service Network, access service network), thereby is connected to ASN, and R1 adopts the wireless tranmission techniques of 802.16e.ASN is by R3 reference point and V-NSP (Visited-Network ServiceProvider, the access zone network service provider) CSN (Connectivity Service Network, connectivity serving network) connects, connect between the CSN of the CSN of V-NSP by R5 reference point and H-NSP (Home-Network Service Provider, belonging area network service provider).

In traditional Network, mainly be based on online, e-mail one-to-one (one to one) business such as (Emails).But along with the deep development of network technology and constantly widening of Network, on the basis of traditional one-to-one business, the ecommerce of one-to-many (one-to-many), many-to-one (many-one) such as a large amount of multimedia conferencings, electronic classroom, online program request, IP TV and many-to-many (multi-to-multi) type successively emerges.At present, these ecommerce have obtained paying attention to widely and using, and become an important part of operational line.For above-mentioned electronic commerce affair, the IP multicast as a kind of quite targetedly and the notion and the technology of practicality, also paid attention to by people day by day, and obtained broad research and tremendous development.

Why valuable the IP multicasting technology is, just be the IP multicast as to the expansion of Traditional IP, a kind of transfer mode of the IP message that carries out one-to-many, many-to-many and many-to-one on local area network (LAN) or wide area network and a solution of corresponding service are provided.

In general, the transfer mode of IP message mainly contains three kinds: clean culture, broadcasting and multicast.

Realize that under unicast mode the principle schematic of one-to-many is shown in Fig. 2 (a).Under unicast mode, can realize the Network of one-to-one very ideally, but if desired some IP messages are sent to a plurality of recipients, when promptly realizing one-to-many, many-to-many, just need duplicate a plurality of IP messages according to the difference of recipient's unicast address at transmitting terminal, should send respectively by a plurality of IP messages then, only have the difference of purpose IP address between these a plurality of P messages, the data segment of message is then just the same.The circulation way of above-mentioned IP message can cause the significant wastage of the network bandwidth undoubtedly.

Under broadcast mode, though can utilize hardware broadcasting that an IP message is sent on all devices on the subnet of place, and do not need the IP message is duplicated,, this broadcast mode can only be confined to could be effectively in the subnet of sender place.In case recipient and sender do not belong to same subnet,, will be forced in and duplicate this message on the total interface and send if router also adopts broadcast mode to transmit the IP message.From this view point, though adopt broadcast mode can save sender's resource, caused a large amount of wastes of Internet resources equally, and can greatly increase the possibility of message loopback.Therefore, in general, broadcast mode can only be limited in using in the subnet.

Realize that under multicast pattern the principle schematic of one-to-many is shown in Fig. 2 (b).Under multicast pattern, all recipients can be defined as the member of same multicast group, and when sending this IP multicast message, destination address is changed to the multicast address of this multicast group, rely on the hardware multicast ability to send then.

Along with the continuous development of electronic commerce affair demands such as WiMAX technology and IP TV, how to utilize BWA (broadband wireless access) networks such as WiMAX, DSL that multicast broadcast service is provided, become urgency problem to be solved of industry.In the prior art, also do not utilize the BWA network that the solution of multicast broadcast service is provided.

Summary of the invention

In view of above-mentioned existing in prior technology problem, the purpose of this invention is to provide a kind of multicast and broadcast system, thereby can realize by BWA network developing multicast broadcasting services such as WiMAX, DSL.

The objective of the invention is to be achieved through the following technical solutions:

A kind of multicast and broadcast system comprises: multicast and broadcast controller MBSC, multicast and broadcast content server MBS CS and Access Network fringe node AE, wherein,

MBSC: be connected with MBS CS by first interface, receive the multicast and broadcast service MBS user's of MBS CS collection charge information, the IP multicast address management is provided; Management MBS session information is connected with user equipment (UE) by second interface, participates in the UE authentication; Be connected with AE by the 3rd interface, the professional corresponding policy information of MBS is sent to AE;

MBS CS: be connected with AE by the 4th interface, under the control of MBSC, the MBS business tine that receives be converted to multicast or broadcasting IP stream, and described multicast or broadcasting IP stream are sent to AE by the 4th interface; Be connected with MBSC by the 5th interface, MBS user's charge information is provided to MBSC; Accept control and IP multicast address management that MBSC provides;

AE: receive the described multicast or the broadcasting IP stream of MBS CS transmission and send to UE by the 4th interface; Receive the professional corresponding policy information of MBS that MBSC sends by the 3rd interface.

Described multicast and broadcast system also comprises: checking, mandate, charging aaa server, the MBS CP of multicast and broadcast content supplier and access node AN, wherein,

Aaa server: be connected with MBSC by the 6th interface, under the control of MBSC, UE or MBS business carried out authentication, mandate and charging; Obtain the subscription information of storing among the SPDB, and this subscription information is passed to MBSC;

MBS CP: be connected with MBS CS by the 7th interface, send the MBS business tine to MBS CS; Be connected with MBSC by the 8th interface, with the MBSC interactive information;

AN: set up or remove the carrying between UE and the AE, the MBS business tine that AE is sended over sends to UE.

Described multicast and broadcast system also comprises: multicast and broadcast user management center MBS SPM, user management database SPDB and application function body AF, wherein,

MBS SPM: the online or off-line interconnection with UE, receive subscription and the renewal of UE to the MBS business, UE is passed to SPDB to the subscription and the lastest imformation of MBS business;

SPDB: be used for UE that store M BS SPM passes over subscription and lastest imformation to the MBS business;

AF: link to each other with MBSC by the 9th interface, with MBSC interactive application layer information.

Described MBSC specifically comprises:

Membership qualification administration module: for the UE of requesting activation MBS provides mandate; The subscription information of MBS business is produced the station message recording information of UE according to the UE that obtains from aaa server;

MBS service distribution module: the transmission and the issue of control MBS business tine, for UE provides MBS media description and MBS conversation description.

One of described MBSC also comprises at least: in safety management module, address administration module, service log-on administration module and the MBS decision-making management module, wherein,

Safety management module: the integrality and the Confidentiality protection of MBS business datum are provided, generate as key management unit and carry out the professional required key material information of MBS, and the key material information of described generation is distributed as the MBS cipher key distributor;

Address administration module: set up IP multicast address, the IP multicast address information of setting up is passed to MBS decision-making management module; For the interconnected WiMAX network in the inserting of microwave whole world, do the MBS district and administer and maintain, set up corresponding multicast data flow sign SFID of IP multicast address or CID connection identifier;

Service log-on administration module: for MBS CP provides Certificate Authority; Produce the station message recording information of MBS CP; With MBS CP interactive information;

MBS decision-making management module: realize the MBS policy decision point, UE is associated the subscription identification information of MBS business, IP multicast address and the corresponding QoS requirement that the address administration module passes over; The quality of service request that receives is converted to UE the MBS business quality of service policy and offer Policy Enforcement Point.

Described MBS CS specifically comprises:

Session and transport management module: the transmitting and scheduling that carries out the MBS session according to corresponding quality of service policy; Give each MBS session allocation identification; Transmission channel between foundation and dismounting and the Access Network flows to Access Network by professional corresponding multicast of this transmission channel transmission MBS or broadcasting IP;

Reuse management module: carry out multiplexing to Streaming Media;

Media conversion administration module: the content of adaptive various various flows media formats.

Described AE specifically comprises:

AE chain of command AE-CP: communicate by letter with AN foundation, set up, remove the carrying of clean culture IP stream and multicast IP flows at network; Connect with UE, obtain unicast ip address, set up with MBSC and communicate by letter;

AE data surface AE-DP: consult to add multicast group with multicast router, obtain multicast or broadcasting IP stream; According to the information of obtaining from MBSC described multicast or broadcasting IP stream are handled accordingly.

Described AE-CP and MBSC integrate, and AE-DP and MBS CS integrate.

When UE roamed, described aaa server comprised local H-AAA server and visit ground V-AAA server; Described MBS SPM, SPDB and H-AAA server are formed home network service provider H-NSP; Described V-AAA server, MBSC, MBS CS and AF form access zone network service provider V-NSP.

When UE roamed, described aaa server comprised H-AAA server and V-AAA server; Described MBSC comprises H-MBSC and V-MBSC, H-MBSC and V-MBSC interconnection; Described MBS CS comprises H-MBS CS and V-MBS CS, H-MBS CS and V-MBS CS interconnection;

Described MBS SPM, SPDB, H-AAA server, H-MBSC, H-MBS CS and AF form H-NSP; Described V-AAA server, V-MBSC, V-MBS CS and AF form V-NSP.

V-MBSC is connected with H-MBSC by the tenth interface, transmits the MBS user's of V-MBS CS collection station message recording information to H-MBSC by the tenth interface; Coordinate multicast address management and the key management of V-NSP and H-NSP;

V-MBS CS is connected with H-MBS CS by the 11 interface, and the MBS content that receives from H-MBS CS transmits;

H-MBS CS sends the MBS content by described the 4th interface to V-NSP.

When roaming took place UE, MBS provided service by described H-NSP and described V-NSP; Described H-MBS CS is converted to the MBS business tine that receives multicast or broadcasting IP stream and is transmitted to V-MBS CS under the control of H-MBSC, V-MBS CS sends to UE again;

Perhaps, described H-MBS CS directly is transmitted to V-MBS CS with the MBS business tine that receives under the control of H-MBSC, and V-MBS CS is converted to this MBS business tine multicast or broadcasting IP stream and sends to UE.

The transfer approach of the MBS business of described multicast and broadcast system comprises step:

A, UE obtain the MBS session information, register to MBS CS or MR;

B, described MBS CS or MR send the MBS content according to the information of described UE registration to described UE.

14, multicast and broadcast system according to claim 13 is characterized in that, the steps A of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

A1, UE initiate the Information Request of MBS to MBS CS or MR, after aaa server passes through the UE authentication, send the MBS session information that obtains from MBSC to UE;

After A2, described UE receive described MBS session information, initiate to carry the link registration request of SFID or CID or program identification information to described MBS CS or MR, described MBS CS or MR add multicast group with described UE, and notice aaa server and MBSC charge to described UE.

The steps A 1 of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

A11, described MBSC are to the programme information of described UE issue MBS business tine; Perhaps, described UE visits described MBSC, obtains the programme information of MBS business tine;

A12, described UE initiate the Information Request of MBS to access service network ASN, and described ASN initiates authentication request to aaa server;

A13, described aaa server obtain the MBS session information from MBSC after described UE authentication is passed through, and return the Authentication Response that comprises described MBS session information to described ASN; Described ASN returns the session information response that comprises described MBS session information to described UE.

The steps A 2 of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

A21, described UE initiate to carry the link registration request of SFID or CID or program identification information to described ASN; Described ASN joins request to MBS CS or MR transmission multicast according to the MBS session information of this link registration request and acquisition;

A22, described MBS CS or MR add multicast group with described UE; To the response of succeeding in registration of described UE return link, described MBS CS or MR notify described aaa server and MBSC to begin described UE is chargeed to described ASN by the base station, and described aaa server returns to charge to described MBS CS or MR and begins response.

The step B of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

Described MBS CS or MR flow to multicast or the broadcasting IP that described UE sends described SFID or CID or program identification information correspondence, and UE receives described multicast or broadcasting IP stream.

The transfer approach of the MBS business of described multicast and broadcast system also comprises:

Described MBS CS or MR nullify the registration of described UE, stop to send the MBS content to described UE.

As seen from the above technical solution provided by the invention, the present invention is by being provided with MBSC (multicast and broadcast controller) and MBS CS (multicast and broadcast content server) in the BWA network, MBS CS is converted to multicast IP flows with the business tine that MBS CP (multicast and broadcast content supplier) provides under the control of MBSC, this multicast IP flows is transmitted to access network.Compare with prior art and to have following advantage:

1, proposes the framework of the system of developing multicast broadcasting service in the BWA network, solved the problem of BWA network developing multicast broadcasting services such as WiMAX, DSL.

2, proposed when UE roams, the framework of the system of developing multicast broadcasting service in BWA networks such as WiMAX, DSL has solved the problem of multicast roaming.

3, multicast and broadcast system of the present invention has been realized separating of control and carrying providing of multicast broadcast service, and trend is disposed in the operation that more can adapt to existing core net.

What 4, proposed multicast and broadcast system of the present invention is the MBS flow process of example with the WiMAX network.

Description of drawings

Fig. 1 is a WiMAX network architecture schematic diagram;

Fig. 2 is clean culture and multicast pattern schematic diagram;

Fig. 3 is the structural representation of the embodiment 1 of multicast and broadcast system of the present invention;

Fig. 4 is the structural representation of the embodiment 2 of multicast and broadcast system of the present invention;

Fig. 5 is when UE roams, the structural representation of the embodiment 3 of multicast and broadcast system of the present invention;

Fig. 6 is when UE roams, the structural representation of the embodiment 4 of multicast and broadcast system of the present invention;

Fig. 7 is H-MBSC in embodiment shown in Figure 53 and the Function Decomposition schematic diagram of H-MBS CS;

Fig. 8 is V-MBSC in embodiment shown in Figure 64 and the Function Decomposition schematic diagram of V-MBS CS;

Fig. 9 is for being example with the WiMAX network, the MBS schematic flow sheet of multicast and broadcast system of the present invention.

Embodiment

The invention provides a kind of multicast and broadcast system and method.Core of the present invention is: MBSC and MBS CS are set in the BWA network, and MBS CS is converted to multicast IP flows with the business tine that MBS CP (multicast and broadcast content supplier) provides under the control of MBSC, this multicast IP flows is transmitted to access network.

The structural representation of the embodiment 1 of multicast and broadcast system of the present invention as shown in Figure 3.Embodiment 1 by: UE (subscriber equipment), NAP+NSP (network insertion operator and NSP belonging network) form.

Comprise among the NAP+NSP as lower unit:

MBSC (multicast service/multicast and broadcast MBS controller);

MBS CS (MBS content server);

MBS CP (MBS content supplier);

AE (Access Network fringe node) is made up of AE-CP (AE chain of command) and AE-DP (AE data surface);

AN (access node);

MR (multicast router);

AF (application function body);

AAA (authentication) server;

MBS SPM (MBS user management center);

SPDB (user management database).

The structural representation of the embodiment 2 of multicast and broadcast system of the present invention as shown in Figure 4.Embodiment 2 equally by: UE and NAP+NSP form.Comprise the unit in the foregoing description 1 among the NAP+NSP equally.

Different with embodiment 1 is, in embodiment 2, AE-CP and MBSC integrate, and AE-DP and MBS CS integrate.MBSC and AF interconnection.

Multicast and broadcast system of the present invention is applicable to BWA networks such as WiMAX network, DSL (Digital SubscriberLine, Digital Subscriber Line) network.

For the WiMAX network, Access Network is ASN (access service network), and AE is ASN GW (access service network gateway), and AE-CP is ASN GW DP (an ASN GW decision point), and AE-DP is ASN GW EP (ASN GW carries out point), and AN is BS (base station).

For the DSL network, AE-CP is Policy Server (policy server), and AE-DP is BNG (wideband network gateway), and AN is DSLAM (Digital Subscriber Line Access Multiplexer).

The correlation and the function of each unit that comprises among the above-mentioned NAP+NSP are as follows:

1, MBSC: with aaa server, MBS CS interconnection.Be used to be achieved as follows function:

(1) management MBS session information, setting up in the process to Access Network and subscriber equipment at service bearer provides session information.

(2) participate in subscription authentication, and management service content-encrypt and key distribution etc.

(3) to MBS CP authentication, the business tine of management from MBS CS to the MSB content server transmits.

(4) when MBSC separates with AE-CP, MBSC realizes AF (strategy decisive function), links to each other with AF (application function body).

2, MBS CS: be connected with MBS CP with the MBS controller, MBSC and MBS CS can interconnect by the Megaco (gateway control protocol) of employing IETF (Internet Engineering Task Force, Internet Engineering Task Force) or the H.248 agreement of ITU-T; The business tine that MBS CS provides MBS CP under the control of MBSC is converted to multicast IP flows and is transmitted to Access Network.This MBS CS is a Streaming Media encoder, if desired multicast IP flows is carried out high infill layer, then realizes on this MBS CS.

3, MR: be connected between access service network gateway and the MBS CS, be used to provide multicast path by.This MR is the multicast router that meets IETF RFC standard.If the multicast IP flows between MBS CS and the Access Network then can omit this MR by tunnel transmission.

4, MBS SPM: interconnect online or off-line interconnection with SPDB with UE.Be used for the subscription situation to MBS, be updated in the respective user information among the SPDB according to the user.

5, SPDB: interconnect with aaa server and MBS SPM; Can place aaa server.The user profile that is used for store M BS,

6, MBS CP: be the supplier of MBS content, can provide by third-party content supplier or NSP oneself.

7, aaa server: be used for user or MBS business are carried out authentication, mandate and charging, and provide the user to sign professional information to MBSC.The aaa server that is positioned at local NSP (H-NSP) is called hometown AAA server (H-AAA); The aaa server that is positioned at visit ground NSP (V-NSP) is called visit ground aaa server (V-AAA).

8, AN: be used to set up or remove the carrying between UE and the AE, and to user multicast or broadcast service (MBS) content; For the WiMAX network, link layer encryption is also done to loaded service in the base station.

9, AE: be connected with described AN, aaa server and MBS CS, be mainly used in the multicast IP flows that MBS CS is provided and be forwarded to described AN, and provide charge information to aaa server.Its concrete function comprises:

(1) communicates by letter with AN, set up, remove of the carrying of clean culture IP stream at network;

(2) connect with UE,, communicate by letter with foundation between the MBS controller so that obtain unicast ip address;

(3) communicate by letter with AN, set up, remove the carrying of multicast IP flows at network;

(4) consult to add multicast group with multicast router, obtain the IP multicast data flow;

(5) according to the information of obtaining from the MBS controller, multicast IP flows is handled, as: the compression of IP head, segmentation etc.;

(6) if the multicast IP flows between AE and the AN by tunnel transmission, then is copied into corresponding tunnel to multicast IP flows.

When UE roamed, the embodiment 3 of multicast and broadcast system of the present invention, the framework of embodiment 4 were shown in Fig. 5 or 6.

In Fig. 5, when roaming took place UE, MBS provided service by V-NSP.In Fig. 6, when roaming took place UE, MBS provided service by H-NSP and V-NSP.Wherein, the local MBSC (H-MBSC) of H-NSP interconnects with the visit ground MBSC (V-MBSC) of V-NSP; The local MBS CS (H-MBS CS) of H-NSP and the visit of V-NSP ground MBS CS (V-MBS CS) interconnection, the business tine that H-MBS CS provides H-MBS CP under the control of H-MBSC is converted to IP multicast or broadcasting stream and transmits or directly be transmitted to V-MBS CS, and V-MBS CS further is converted to business tine IP multicast or broadcasting stream and is transmitted to Access Network.

In the foregoing description 3, embodiment 4, the Function Decomposition schematic diagram of H-MBSC and H-MBS CS as shown in Figure 7, the Function Decomposition schematic diagram of V-MBSC and V-MBS CS is as shown in Figure 8.

In the foregoing description 1, embodiment 2, embodiment 3, embodiment 4, MBSC comprises six partial function modules:

Essential support:

1, membership qualification administration module (Membership Function): be used to the user of requesting activation MBS that mandate is provided; Can download MBS user's subscription information by AAA; Produce MBS user's station message recording;

2, service distribution administration module (Service Announcement Function): being used for MBS issue and relevant information provides, for the user provides MBS media description (as video and audio coding type) and MBS conversation description (as MBS sign, address, delivery time);

Optional support:

3, safety management module (Security Function): the integrality and the Confidentiality protection that are used to provide the MBS data, with the professional required key material information of the developing multicast of its generation, and distribute corresponding key material information as key management unit as the MBS cipher key distributor;

4, address administration module (Address Management Function): be used to set up IP multicast address,, also will do the MBS district and administer and maintain, set up the corresponding multicast data flow sign of multicast address (SFID) or connection identifier (CID) for the WiMAX network;

5, MBS decision-making management module (MBS Policy Function): be used to realize MBS policy decision point function, with Subscriber ID and multicast address, corresponding QOS demand etc. associates, the QOS that AF is issued asks, conversion is formed on the qos policy based on each user's multicast service of network control layer, and (as MSC CS, AE or AN) provides policy informations such as corresponding QoS to Policy Enforcement Point.

6, service log-on administration module (Service Registration Function): be used to MBSCP that Certificate Authority is provided; Produce the station message recording of MBS CP; With MBS CP interactive information (as content supplier's name, program names, media description etc.);

MBS CS comprises three partial function modules:

Essential support:

1, session and transport management module (Session and Transmission Function): be used for carrying out the scheduling of MBS session transmissions according to corresponding qos policy, this qos policy can be from MBSC; To each MBS session mark MBS session identification, to distinguish the MBS session; The foundation of transmission channel and dismounting transmit the MBS message to Access Network; For the WiMAX network, also provide the grand diversity of MBS synchronous;

2, reuse management module (Multiplexing Function): be used for carrying out multiplexing to Streaming Media (as video, audio frequency, text);

3, media conversion administration module (Transcoder Function): be used for adaptive various different media formats content (as H.264, MPEG4, AAC etc.); Do application layer encryption if desired, then MBS CS encrypts Media Stream according to the key material information of MBSC distribution.

In the foregoing description 1, embodiment 2, embodiment 3, embodiment 4, the interface relationship of MBSC and MBS CS is as follows:

First interface (interface 1):

MBSC is connected with MBS CS by interface 1, collects the generation MBS user's of MBS CS station message recording; By the IP multicast address management is provided,, also, Access Network administers and maintains for providing MBS district and multicast connection identifier (CID) for the WiMAX network; Distribute corresponding key material information to MBS CS;

Second interface (interface 2):

MBSC gets in touch with UE by interface 2, for the user of requesting activation MBS provides mandate; For the user provides MBS media description and MBS conversation description; For the user distributes corresponding key material information;

The 3rd interface (interface 3):

MBSC is connected with AE by interface 3, by interface 3 strategies such as the corresponding QoS of MBS is arrived Access Network down;

The 4th interface (interface 4):

MBS CS transmits the MBS content by interface 4 to Access Network; H-MBS CS also can transmit the MBS content to V-NSP by interface a;

When interface 4 adopts the multicast mode, AE in the multi-cast system is according to the MBS session information, send the adding multicast request to multicast router, multicast router adds multicast group with multicast user's node, and the transmission link between foundation and the multicast user's node, and all the multicast user's nodes in multicast group send the MBS business tine;

When interface 4 adopted the tunnel connected mode, AE set up the tunnel with V-MBS CS and is connected according to the MBS session information, and V-MBS CS also can set up the tunnel with V-MBS CS and be connected according to H-MBS CS session information; The multicast IP flows that MBS CS sends is sent to AE by the tunnel connection, sends to subscriber equipment through AN.

The 5th interface (interface 5):

MBS CS is connected with MBSC by interface b, and MBS user's station message recording is provided to MBSC; Accept multicast address management and corresponding key material information;

The 6th interface (interface 6):

MBSC is connected with aaa server by interface 1, obtains MBS authentification of user and authorization message; Aaa server can download to MBSC with MBS user profile (user profile) by this interface 1; In addition, MBSC transmits the MBS user's of MBS CS collection station message recording to aaa server by interface 1;

The 7th interface (interface 7):

MBS CS is connected with MBS CP by interface c, and the MBS content that receives from MBS CP transmits;

The 8th interface (interface 8) (optional):

MBSC is connected with MBS CP by interface 8, for MBS CP provides Certificate Authority and station message recording; With MBS CP interactive information (as content supplier's name, program names, media description etc.);

The 9th interface (interface 9) (optional):

MBSC is connected interactive application layer information by interface 9 with application function body (AF);

The tenth interface (interface 10) (optional):

V-MBSC is connected with H-MBSC by interface 7, transmits the MBS user's who collects to V-MBS CS station message recording to H-MBSC; Coordinate multicast address management and the key management of V-NSP and H-NSP;

The 11 interface (interface 11) (optional):

V-MBS CS is connected with H-MBS CS by interface 11, and the MBS content that receives from H-MBS CS transmits.

In the foregoing description 1, embodiment 2, embodiment 3, embodiment 4, be example with the WiMAX network, the MBS flow chart of multicast and broadcast system of the present invention comprises the steps as shown in Figure 9

91, MBS issue and discovery.

MBSC issues available MBS information (as program names) and parameter (as program start time etc.) to the user; The user obtains the listing of MBS business tine by the application access MBS controller on the MS.The user can obtain as program information such as program names, program start time by listing; In addition, operator can provide listing to the user by approach such as advertisement, notes.

92, MBS content subscription.

The user subscribes to the MBS program according to listing.If it is ciphered program that the user need subscribe to, then need to obtain key.For example, the user opens an account to program or channel and initial key is write in the terminal card.This step is optional, can occur in before the step 1.

93-97, MBS session information obtain.

MS communicates by letter with MBSC and obtains MBS session information (as the mapping between IP multicast address and corresponding SFID or CID, MBS district information, security information etc.);

Wherein:

93, initiate the Information Request of MBS to ASN by MS;

94, ASN initiates authentication request to aaa server;

95, authentication success back aaa server obtains the session information of MBS from MBSC;

96, aaa server returns the Authentication Response of the session information that comprises MBS to ASN;

97, ASN returns the session information response message of MBS to MS.

98, the content availability is measured.

MS determines by DL-MAP (descending mapping table) message of BS whether the specified broadcast channel of eating dishes without rice or wine of corresponding SFID/CID or program identification is available, if available, then continues step 9-12; Otherwise, then reenter the content availability and measure process, or the notice user content can not obtain; This step is peculiar by the WiMAX system.

99-912, MBS registration.

MS is by initiating link registration request, and it begins to monitor MBS informing network, requires network to send corresponding SFID/CID or the specified MBS data flow of program identification; The configurable network parameter of operator whether needs to carry out the MBS registration with notice MS and MBS nullifies;

Wherein:

99, MS begins forward direction ASN initiation register requirement in the MBS content;

910, ASN sends multicast to MBS CS/MR and joins request according to the MBS session information of register requirement and acquisition, by MBS CS/MR the user is added multicast group;

911, ASN returns the response of succeeding in registration by the base station to MS;

912, ASN/MBS CS notice aaa server and MBSC begin to charge, and aaa server returns to charge and begins response.

913, the MBS content transmits:

MBS CS/MR sends multicast IP flows to subscriber equipment, and subscriber equipment receives corresponding SFID/CID or the specified MBS data flow of program identification.

914-917, MBS nullify.

MS is by the MBS log off procedure, and it no longer monitors corresponding SFID/CID or the specified MBS of program identification informing network, requires network to stop to send corresponding SFID/CID or the specified MBS data flow of program identification;

Wherein:

914, the user initiates de-registration request to ASN;

915, ASN deletes user's MBS information, and returns the cancellation response message to subscriber equipment;

916, access service network gateway notice MBS CS/MR, MBS CS/MR deletes this user in multicast group;

917, ASN/MBS CS sends to aaa server and stops the request of chargeing, and aaa server and MBSC stop to charge and returning the response of chargeing.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claim.

Claims

1, a kind of multicast and broadcast system is characterized in that, comprising: multicast and broadcast controller MBSC, multicast and broadcast content server MBS CS and Access Network fringe node AE, wherein,

2, multicast and broadcast system according to claim 1 is characterized in that, described multicast and broadcast system also comprises: checking, mandate, charging aaa server, the MBS CP of multicast and broadcast content supplier and access node AN, wherein,

3, multicast and broadcast system according to claim 2 is characterized in that, described multicast and broadcast system also comprises: multicast and broadcast user management center MBS SPM, user management database SPDB and application function body AF, wherein,

4, multicast and broadcast system according to claim 2 is characterized in that, described MBSC specifically comprises:

One of 5, multicast and broadcast system according to claim 4 is characterized in that, described MBSC also comprises at least: in safety management module, address administration module, service log-on administration module and the MBS decision-making management module, wherein,

6, multicast and broadcast system according to claim 5 is characterized in that, described MBS CS specifically comprises:

Reuse management module: carry out multiplexing to Streaming Media;

7, multicast and broadcast system according to claim 6 is characterized in that, described AE specifically comprises:

8, multicast and broadcast system according to claim 7 is characterized in that, described AE-CP and MBSC integrate, and AE-DP and MBS CS integrate.

9, multicast and broadcast system according to claim 7 is characterized in that,

10, multicast and broadcast system according to claim 7 is characterized in that,

11, multicast and broadcast system according to claim 10 is characterized in that,

H-MBS CS sends the MBS content by described the 4th interface to V-NSP.

12, multicast and broadcast system according to claim 11 is characterized in that,

According to claim 7,8,9 or 12 described multicast and broadcast systems, it is characterized in that 13, the transfer approach of the MBS business of described multicast and broadcast system comprises step:

A, UE obtain the MBS session information, register to MBS CS or MR;

15, multicast and broadcast system according to claim 14 is characterized in that, the steps A 1 of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

16, multicast and broadcast system according to claim 15 is characterized in that, the steps A 2 of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

According to claim 14,15 or 16 described multicast and broadcast systems, it is characterized in that 17, the step B of the transfer approach of the MBS business of described multicast and broadcast system specifically comprises:

18, multicast and broadcast system according to claim 17 is characterized in that, the transfer approach of the MBS business of described multicast and broadcast system also comprises: