CN1852551A

CN1852551A - Method for realizing multi-cast business data based on mobile network

Info

Publication number: CN1852551A
Application number: CNA2005100711945A
Authority: CN
Inventors: 陈建; 胡军; 缪军海
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2005-05-20
Filing date: 2005-05-20
Publication date: 2006-10-25
Anticipated expiration: 2025-05-20
Also published as: CN100421515C; WO2006122509A1

Abstract

Key points of the method are as following: setting up multicast proxy module in RAN; the module monitors access request including objective information from UE; when determining that the objective information designated in advance in request is objective information of data source in use for providing service of data operation, the module builds control connection to the UE; in procedure of building control connection, UE obtains information of reception attribute; receiving id of service data content from data source, the module down sends corresponding service data to UE; based on received information of attribute, UE receives service data through built transmission channel. Using multicast proxy module, the invention only needs to transmit one portion of data between data source and multicast proxy module to realize multicast of service data. Features are: fast and smooth data process, and raised use rate of network resources.

Description

Implementation method based on mobile network's multi-cast business data

Technical field

The present invention relates to mobile network's technical field, be meant a kind of implementation method of the multi-cast business data based on the mobile network especially.

Background technology

Along with the 3G development of Communication Technique, network can provide enough data wireless transmission bandwidths, and, the integrated level of mobile phone is also more and more higher, the information processing capability of mobile phone is also more and more stronger, under this condition, mobile phone not only is used for traditional voice call business already, can also realize playing the multiple business data, just very natural appearing on the mobile phone of the streaming media service data relevant with video/audio, concrete as multimedia short message service data, PS domain video stream business datum, visual telephone service data, multimedia broadcast multi-cast service data etc.

At present, the existing streaming media service of playing on mobile phone all adopts the transmission means of point-to-point, referring to Fig. 1, Figure 1 shows that the realization principle schematic of point-to-point transmission.

Each user terminal (UE) carries out alternately with wireless access network (RAN), core net (CN) respectively, sets up the special-purpose IP data transmission channel that is connected with external network of being used for.Afterwards, streaming media server sends the streaming media service data by this special-purpose IP data transmission channel to UE.Be that the IP data transmission channel of all setting up a special use between each UE and the streaming media server is used for the transmission stream media service data, streaming media server also is necessary for each UE and sends a piece of data respectively.

Based on above-mentioned principle, when a user need teleview by mobile phone, user's UE passes through network side, comprise SGSN, GGSN, IP transmission network, send the streaming media playing request to streaming media server, playing request can be carried by RTSP agreement or other media stream in real time interaction protocol, comprise user-selected program identification in this request, it is selected channel, network side is set up special-purpose IP data transmission channel between UE and streaming media server, after the IP data transmission channel was set up and finished, streaming media server was told UE with the attribute information that receives.So-called attribute information comprises the information such as IP address, port numbers, speed and coded format of data transmission channel.Afterwards, a and the pairing data of program identification of streaming media server copy, and the IP data transmission channel of these data by the special use of having set up sent to UE, UE is according to the attribute information that receives, to after the data decode that receives audio and video information being presented to the user.

Above-mentioned be with the streaming media service data instance Benq in the method for the service data transmission of mobile network, certainly the business datum of being transmitted in the mobile network comprises but is not limited to the streaming media service data, the business datum of being transmitted can also be the media file business datum, as MTV, MP3 music file, video file, e-book, picture, electronic newspaper etc.This shows that there is following defective in the method for existing service data transmission:

1) for present R99, R4, R5 network, between application server and each UE, all need to set up the IP data transmission channel of a special use, no matter whether each UE requires the business datum that receives identical, application server all will all send a piece of data for each UE, must occur same business datum like this and be sent out repeatedly, thereby make resource utilization very low, and, because the resource of network side is limit, the number of users of access is also restricted.

2) because NodeB has a very wide distribution, and all has ready conditions and lay optical fiber or many E1 in not all NodeB base station, even and lay, the cost of laying is also very high; For the operator that does not have transfer resource, the price of renting transmission channel is very high.A general operator only provides several direct broadcast bands (as a few cover TV programme), if tens users among the RAN below NodeB receive identical business datum, as watch same television channel, under present implementation, just need on the IUB interface between RNC and the NodeB, set up the dedicated transmission channel of a stream media bearing business datum for each UE, this must cause the IUB interface resource to be taken in a large number, operator's transfer resource of having to for this reason increase, and for the user, the expense of reception also is very high certainly.Like this, do not utilize applying of this service.

3) for the R6 network, it has broadcast multi-broadcasting-service center (BM-SC, Broadcast Multicast-Service Center), can support multimedia BroadCast MultiCast Service (MBMS) in theory, but the agreement of this version is not also formulated and is finished, and ripe product is introduced to the market and also needed the long period, and existing network is scarcely supported R6, if adopt the mode of R6, change bigger to the integral body of existing network.

This shows that the business datum of similar Streaming Media can not realize multicast in existing network, thereby not only network resource utilization is low, and realizes that cost is very high.

Summary of the invention

In view of this, the object of the present invention is to provide a kind of implementation method of the multi-cast business data based on the mobile network, make network side be used to provide the data source of data only need issue a piece of data to RAN, improve the resource utilization of network side application layer.

For achieving the above object, technical scheme of the present invention is achieved in that

A kind of implementation method of the multi-cast business data based on the mobile network is provided with the multicast agent module on wireless access network RAN, wait that the UE and the CN that receive business datum carry out alternately, activates PDP, and this method is further comprising the steps of:

Multicast agent module monitors among a, the RAN is to the access request that comprises purpose information from UE, after the purpose information in this request judged is the purpose information of the preassigned data source that is used to provide the data service service, carry out access control, obtain the UE business datum content identification to be received of the request of initiate inserting, set up and UE between control connection; UE obtains the reception attribute information from setting up of control connection the process;

After multicast agent module among b, the RAN receives startup playing request from UE, according to the business datum content identification of having obtained, will be from data source be handed down to UE with the corresponding business datum of business datum content identification;

C, UE receive business datum according to the reception attribute information that has obtained in the transmission channel of having set up.

Preferably, described multicast agent module is made of control agent CA and agent data DA;

The described operation of step a is carried out by the CA in the multicast agent module;

When CA set up and UE between control connection after, CA notice DA begins to carry out the operation that sends business datum; After DA receives this notice from CA, again will be from data source be handed down to UE with the corresponding business datum of business datum content identification.

Preferably, the described transmission channel of having set up is the data transmission channel of the special use of setting up at each UE between transport layer RAN and UE;

Described DA will be from the process that is handed down to UE with the corresponding business datum of business datum content identification of data source: when DA receives after execution from CA sends the notice of business datum, beginning sends business datum on the downlink dedicated data transmission channel at the UE place of initiating playing request.

Preferably, the shared data transmission passage of the described transmission channel of having set up for setting up in advance at each business datum content identification for each sub-district at transport layer RAN;

Described DA will be from the process that is handed down to UE with the corresponding business datum of business datum content identification of data source: when DA receives after execution from CA sends the notice of business datum, add up and receive the number of users that this UE requires the business datum play in the sub-district, the current place of UE of this initiation playing request, and judge whether this number of users becomes non-zero by zero, if, then DA begins to send the desired business datum of this UE on descending common transmission passage, otherwise DA does not process; Perhaps,

Add up by the SACU in the RAN and receive the number of users that this UE is required the business datum play in the sub-district, the current place of UE of this initiation playing request, and judge whether this number of users becomes non-zero by zero, if, then send the notice that begins to send data to DA, after DA receives this notice, beginning sends the desired business datum of this UE on descending common transmission passage, otherwise the SACU in the RAN no longer processes.

Preferably, the process of setting up of the described shared data transmission passage of setting up in advance may further comprise the steps:

01) SACU in the indication of the CA in the multicast agent module RAN reshuffles, and comprises the selected business datum content identification of UE in this configuration indication;

02) SACU receives step 01) after the described indication, disconnect the downstream IP data channel of having set up, reshuffle at self, afterwards, from reshuffle indication, obtain the business datum content identification, recomputate the wireless network identification of this UE according to this business datum content identification according to existing account form; And then, comprise the wireless network identification that has recalculated in this information to the information that UE sends change UTRAN;

03) UE receives step 02) after the described changed information, upgrade self wireless network identification, return the change confirmation to SACU then;

04) SACU sends reconfigure command to UE, and after UE received this order, after self reshuffled, UE returned the reconfigure command response to SACU;

05) SACU discharges the channel resource that current UE takies.

Preferably, when described network was WCDMA, described SACU was RRC, and described wireless network identification is that UTRAN Radio Network Temporary Identifier URNTI and cell-radio network temporarily identify CRNTI; Described indication and the reconfigure command of reshuffling is respectively D2F and reshuffles and indicate and the D2F reconfigure command; The channel resource that described current UE takies is a dedicated channel resource.

Preferably, described UE and CN carry out alternately, comprise at least in the process of activation PDP and set up the Radio Resource control connection, if network has been preconfigured to RAN the data of eating dishes without rice or wine are encrypted, then this method further comprises:

Initiate to comprise in the wireless resource control connection request expansion cause value of " multicast service request (Multicast Service Request) " when UE and RAN are mutual, the cause value that detects wireless resource control connection request as RAN is during for " multicast service request ", to the air interface data of this UE not encrypted, directly send.

Preferably, the reception of the DA in the described multicast agent module from the mode of the business datum of data source is:

The multicast agent module directly receives the business datum from data source, perhaps,

The network of multicast agent module warp except that CN receives the business datum from data source, perhaps,

Utilize the routing function among the CN, set up a passage that is specifically designed to the transport multicast business datum, multicast agent module this special transmission channel in CN receives the business datum from data source.

Preferably, the business datum that the DA in the described multicast agent module receives from data source is unicast data or multicast packet, is unicast data then unicast data is converted to multicast packet if receive, and carries out subsequent operation again.

Preferably, this method further comprises:

A, UE initiate to discharge request, comprise purpose information in this request; This purpose information is purpose IP address, or purpose IP address and port numbers;

Multicast agent module monitors among B, the RAN is to the release request that comprises purpose information from UE, after the purpose information in this request judged is the purpose information of the preassigned data source that is used to provide the data service service, intercept and capture this request, carry out resource release operations; Afterwards, return the release response to UE.

When having the data transmission channel of a special use at each UE between transport layer RAN and UE, described resource release operations may further comprise the steps:

CA notice DA stops to send business datum to the downlink dedicated transmission channel of this UE, and, control connection between CA releasing network side and the UE side and Radio Resource control; After DA receives above-mentioned notice, then stop to send business datum to the downlink dedicated transmission channel of this UE.

When having a shared data transmission channel at each business datum content identification, further comprise the business datum content identification in the release request that described UE initiates in transport layer RAN and each sub-district;

Described resource release operations may further comprise the steps:

CA Control Network side is reshuffled, and notice DA stops on this data transmission channel of sharing and sends business datum, and CA discharges shared control connection of UE side and Radio Resource control;

After DA receives above-mentioned notice, the number of users of this business datum content of current reception in this sub-district is subtracted one, judge then whether the number of users that receives this business datum is by the non-zero vanishing, if, then DA stops to send business datum to this sub-district, otherwise DA does not process; Perhaps,

Described resource release operations may further comprise the steps:

CA Control Network side is reshuffled, simultaneously, SACU in the RAN subtracts one with the number of users of this business datum content of current reception in this sub-district, judge then whether the number of users that receives this business datum is by the non-zero vanishing, if then send the notice that stops to send data, after DA receives this notice to DA, stop at and send the desired business datum of this UE on the descending common transmission passage, otherwise the SACU in the RAN no longer processes.

Preferably, the operation of reshuffling of described CA Control Network side may further comprise the steps:

CA indication SACU in the multicast agent module reshuffles; SACU reshuffles at self after receiving and reshuffling indication, afterwards, sends reconfigure command to UE;

UE reshuffles at self according to the order that receives.

Preferably, when described network was WCDMA, described SACU was RRC; Described indication and the reconfigure command of reshuffling is respectively F2D and reshuffles and indicate and the F2D reconfigure command.

Preferably, described control connection is that professional control connection is connected with TCP, described professional control connection can be the Streaming Media control connection, it includes but not limited to real-time stream media protocol RTSP (RealtimeStreaming Protocol), described professional control connection also can be the control connection that file transmits, and it includes but not limited to a little arrive the unidirectional file transfer protocol (FTP) FLUTE (File Delivery overUnidirectional Transport) of multiple spot.

Preferably, when described multicast agent module is made of control agent CA and agent data DA, and when there are a shared data transmission channel in RAN and each sub-district at each business datum content identification, further comprise, UE strides cell update, and described cell updating course may further comprise the steps:

I) after SACU receives the cell update request that comprises Target Cell Identifier information from UE, judge whether the common channel data of carrying in Target cell and cell-of-origin is the same, if the same, then direct execution in step iii), if different, then execution in step ii);

Ii) SACU recomputates the wireless network identification of this UE, afterwards, the information to UE sends change UTRAN comprises the wireless network identification that has recalculated in this information, after UE finishes according to the information updating that receives, return the affirmation information of change UTRAN to SACU;

Iii) SACU notifies the CA in the multicast proxy module, and UE has carried out cell update, by CA notice DA, all comprises the identification information of Target cell and the sign of initiating the UE of update request in the above-mentioned notice;

Iv) DA adds one with the corresponding number of users of business datum content identification that receives with this UE in the Target cell; Judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE is to become non-zero by zero, if, then the common transmission passage that starts in Target cell to this business datum of carrying sends data, and then execution in step v), otherwise then direct execution in step v);

V) DA subtracts one with the corresponding number of users of business datum content identification that receives with this UE in the cell-of-origin; Judge then whether the number of users in the corresponding data transmission channel of business datum content identification that receives with this UE in the cell-of-origin is non-zero, if, then direct execution in step vi), otherwise, send business datum in the corresponding data transmission channel of business datum content identification that DA stops to receive with this UE in the cell-of-origin, and then execution in step vi);

Vi) DA notice CA operation is finished, and CA gives the SACU return response message that is finished; After SACU receives this response, return the cell update response to UE.

Iii) SACU adds one with the corresponding number of users of business datum content identification that receives with this UE in the Target cell, judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE is to become non-zero by zero, if, then execution in step iv), otherwise then direct execution in step v);

Iv) the DA in the SACU notice multicast proxy module begins to send data, DA receives this notice back and starts in Target cell to the common transmission passage transmission data of carrying this business datum, and return the response message of executable operations to SACU, and then execution in step v);

V) SACU subtracts one with the corresponding number of users of business datum content identification that receives with this UE in the cell-of-origin, judge then whether the number of users in the corresponding data transmission channel of business datum content identification that receives with this UE in the cell-of-origin is non-zero, if, then do not process, otherwise, DA in the notice multicast proxy module stops to send data, after DA receives this notice, send business datum in the corresponding data transmission channel of business datum content identification that stops in the cell-of-origin receiving, and give the SACU return response message that is finished with this UE;

Vi) SACU returns the cell update response to UE.

Preferably, when described network was WCDMA, described SACU was RRC, and described wireless network identification is that UTRAN Radio Network Temporary Identifier URNTI and cell-radio network temporarily identify CRNTI.

Preferably, the agent data DA in the described multicast agent module is made of the uniprocessing unit, or is made of two-stage or the processing unit more than the two-stage;

When the DA in the multicast agent module is made of the bi-level treatment unit, if the multicast packet agent unit LDAU of low level receives the broadcast notice from CA, then LDAU adds one with the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area, judge then whether the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area becomes non-zero by zero, if, then send the request of access to high-level multicast packet agent unit HDAU, the common transmission passage that is started to this business datum of carrying by HDAU sends data, otherwise LDAU does not process;

If low layer LDAU receives from the broadcast that stops of CA and notifies, then LDAU subtracts one with the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area, judge that then whether the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area is by the non-zero vanishing, if, then send business datum in the corresponding data transmission channel of business datum content identification that LDAU notice HDAU stops to receive with this UE in this sub-district, otherwise, do not process.

Preferably, if WCDMA network, and when described multicast agent module was arranged in the RNC among the RAN, described multicast agent module utilized hardware based multicast functionality in the RNC business datum to be sent to the multicast packet agent unit of low level from high-level multicast packet agent unit; Described hardware is the hardware platform of IP function of exchange, or ATM switching plane or multiple service platform.

Preferably, if WCDMA network, and when described multicast agent module is arranged in the RNC among the RAN, further comprise: the multi-case data distribution with business datum distribution function is set in NodeB acts on behalf of the MDDA module, this MDDA module receives the business datum from RNC, is distributed to each sub-district after as required data being duplicated.

Preferably, if the WCDMA network, described multicast agent module is arranged in the RNC among the RAN, or is arranged in the NodeB among the RAN; If cdma network, described multicast agent module is arranged on the CBSC among the RAN, or is arranged on the CBTS among the RAN; If the GSM network, described multicast agent module is arranged on the GBSC among the RAN, or is arranged on the GBTS among the RAN.

Preferably, described purpose information is purpose IP address, or purpose IP address and port numbers; The described reception attribute information of step b comprises and IP address, port numbers, speed and the coded format of waiting to receive the corresponding data of business datum content identification at least.

Preferably, described data source includes but not limited to streaming media server, and described business datum comprises but is not limited to the streaming media service data.

Key of the present invention is, multicast agent module monitors among the RAN is to the access request that comprises purpose information from UE, after the purpose information in this request judged is the purpose information of the preassigned data source that is used to provide the data service service, carry out access control, obtain the UE business datum content identification to be received of the request of initiate inserting, set up and UE between control connection; UE obtains the reception attribute information from setting up of control connection the process; After multicast agent module among the RAN receives startup playing request from UE, according to the business datum content identification of having obtained, will be from data source be handed down to UE with the corresponding business datum of business datum content identification; UE receives business datum according to the reception attribute information that has obtained in the transmission channel of having set up.

Use the present invention, have the following advantages:

1, owing to adopted the multicast agent module, data source has realized the multicast of business datum to only needing transmission one piece of data between the multicast agent module, makes that data processing can be quicker and smooth, help to promote the Qos of streaming media service, improved utilization rate of network resource.

2, because the existence of multicast agent module, RAN can obtain the speed of current business data, thereby make the related entities speed current in the RAN according to business datum, the Bearer Channel of assignment or reprovision respective rate, such as the speed when a program source is that 50Kbits/ is during second, only need to distribute the transmission channel of 64K just enough for this user, thus can be more effectively and scientifically use limited empty resource.

3, owing to adopted RAN agent skill group, many processing need not arrive the processing of CN and streaming media server side again, the big quickening of flow processing speed is obviously felt the user and the quickening of the speed of continuing has been improved service quality.

If 4 data sources are streaming media servers, the higher streaming media server of a present performance handles online request simultaneously or live number of users is about about 1000, and after adopting method of the present invention, online live user can reach tens thousand of when streaming media server can be supported, the resource of core-network side and application layer also can be saved greatly.

5, the method for the invention can combine with the mobile network well, as combining with RAN among present R99, R4, the R5, change very little to existing network, can reduce operating cost significantly for operator provides a kind of, especially be reduced in eat dishes without rice or wine, the operation way of the transmission cost on the IUB interface.Operator can utilize this technology simultaneously, reduces and watches the live broadcast stream media expense by mobile phone, thereby make operator handle very favorable position in competition.

6, receive the multicast agent module of data source business datum, can adopt the bypass technology of multicast packet to receive business datum, multi-cast business data has promoted the QOS of multicast packet significantly by the passage carrying of special use like this.

Description of drawings

Figure 1 shows that the realization principle schematic of point-to-point transmission;

Fig. 2 a is depicted as a kind of realization principle schematic of using realization multicast of the present invention;

Fig. 2 b is depicted as the another kind of using realization multicast of the present invention and realizes principle schematic;

Protocol hierarchy figure when Fig. 3 a is depicted as CA and acts on behalf of as streaming media server;

Shown in Fig. 3 b when CA acts on behalf of as streaming media server the protocol hierarchy figure of DA;

Figure 4 shows that the overall realization flow figure that sets up service data group broadcast of an embodiment;

Fig. 5 is shown the realization flow figure at transport layer configuration shared data transmission passage.This realization flow is that example describes with the FACH channel;

Fig. 6 a is each entity relationship schematic diagram that existing network side is eated dishes without rice or wine;

Each entity relationship schematic diagram that network side was eated dishes without rice or wine when Fig. 6 b inserted the UE employing designated lane of asking for using initiation of the present invention;

Each entity relationship schematic diagram that network side was eated dishes without rice or wine when Fig. 6 c inserted the UE employing sharing channel of asking for using initiation of the present invention;

Figure 7 shows that the DA in the multicast agent module in the RAN receives the implementation schematic diagram of the business datum of data source;

Figure 8 shows that the overall realization flow figure of the release service data group broadcast of an embodiment;

Figure 9 shows that and discharge the realization flow figure that when sharing the multicast transmission channel transport layer is reshuffled;

Figure 10 shows that the schematic flow sheet of cell update;

Figure 11 shows that the handoff procedure flow chart when striding RNC;

Figure 12 shows that the realization principle schematic of multicast agent module memory at two-stage DA;

Figure 13 shows that the realization principle schematic that MDDA is set in NodeB.

Embodiment

Below in conjunction with accompanying drawing the present invention is done detailed description further again.

The present invention realizes that substantially thinking is, between application server and UE during service data transmission, is become a bit transmission means of multiple spot by original point-to-point transmission means, promptly realizes the multicast of business datum.

Fig. 2 a is depicted as a kind of realization principle schematic of using realization multicast of the present invention.The multicast agent module is set in RAN, and each UE carries out alternately with RAN, CN respectively, activates PDP.Afterwards, be used for providing the data source of business datum only to need self all business datum is sent a multicast agent module to RAN through router, realize transmission and between UE and RAN, still use existing transmission mode, be the data transmission channel of setting up a special use between each UE and the RAN, the business datum from data source that will be received by the multicast agent module among the RAN sends to each UE respectively.Like this, for the core net part of network side, between data source and RAN, only there is a passage, saved the resource of core net part greatly, improved resource utilization, reduced cost.

Fig. 2 b is depicted as the another kind of using realization multicast of the present invention and realizes principle schematic.In this implementation procedure, identical with mode shown in Fig. 2 a for data source to the implementation of RAN, on this basis, the multicast agent module is only set up a data transmission channel at each business datum content identification in each sub-district, like this, all UE that receive same business datum content in the same sub-district only need a passage, thereby have saved the Internet resources of network side Access Network part further, improve resource utilization, reduced cost.

Data source of the present invention comprises but does not limit and derive from streaming media server that described business datum comprises but is not limited to the streaming media service data, can also be media file business datums such as MTV, MP3 music file, e-book, picture, electronic newspaper.

For realizing that the present invention need be provided with multicast agent module (MA) in RAN, this multicast agent module is made of jointly control agent (CA) entity and agent data (DA) entity, and control agent (CA) entity and agent data (DA) entity can be same physical entity, also can be different physical entities.

Control agent (CA), it is mainly handled with the professional control connection of UE and is connected with TCP, wherein professional control connection can be the Streaming Media control connection, it includes but not limited to real-time stream media protocol (RTSP, Realtime Streaming Protocol), professional control connection also can be the control connection that file transmits, and it includes but not limited to a little arrive the unidirectional file transfer protocol (FTP) (FLUTE, File Delivery overUnidirectional Transport) of multiple spot.

Agent data (DA), it mainly handles concrete multi-cast business data distribution processor, receives the business datum from data source, at CA or signaling and controlled processing unit (SACU, Signal And ControlUnit) under the control, data is sent to UE by the Traffic Channel that RAN sets up.

All embodiment of this paper the following stated are example with the WCDMA network all.In the WCDMA network, SACU is the RRC entity.

Acting on behalf of streaming media server with multicast agent module in the RAN below is that example describes, and the CA among the MA has acted on behalf of the ICP/IP protocol layer and the RTSP protocol layer of streaming media server at this moment, and DA has acted on behalf of the real-time media data distribution function of streaming media server.Be respectively CA and the DA protocol hierarchy figure when acting on behalf of shown in Fig. 3 a and Fig. 3 b as streaming media server.

Referring to Fig. 3 a, from bottom to up, the protocol layer of CA is followed successively by physical layer (PHY), this physical layer can be DPCH or SCCPCH, and medium access control (MAC) layer has dedicated channel (DCH) or forward access channel (FACH) in this MAC layer, Radio Link control (RLC) layer, this layer can be to reply affirmation (AM) pattern, also can be non-affirmation (UM) pattern, the PDCP layer of replying, the IP layer, TCP layer, and Streaming Media key-course are as RTSP or MMS (Microsoft Media Server) Protocol.This shows that CA has acted on behalf of ICP/IP protocol layer and stream media protocol layers such as RTSP, MMS fully, PDCP and following protocol layer are the intrinsic protocol layers of RAN.

Referring to Fig. 3 b, from bottom to up, the protocol layer of DA is followed successively by PHY, this PHY can be DPCH or SCCPCH, the MAC layer, and this MAC layer can be DCH or FACH, rlc layer, but this layer AM pattern also can be the UM patterns, the PDCP layer, IP layer, UDP layer, the RTP layer, A/V Stream is as AMR, H.263, H.264, MPEG4 etc.This shows, DA has realized the distribution function of stream medium data, and data have been done corresponding processing, these processing comprise, if the IP address is a unicast address, then be translated into multicast address, and change udp port number, and recomputate this UDP message bag verification and, transfer to PDCP afterwards and on special use or common channel, issue UE, wherein, PDCP and following protocol layer are the intrinsic protocol layers of RAN.

Figure 4 shows that the overall realization flow figure that sets up service data group broadcast of an embodiment.In the present embodiment, be provided with the MA that constitutes by CA and DA in the RAN.Use " RAN/ multicast agent module " in the drawings and represent the MA that has been provided with in the RAN.

Step 401, UE and RAN are mutual under the idle pulley, set up RRC with Radio Resource control (RRC) inter-entity in the RAN and are connected.

Step 402, UE and CN activate PDP alternately.

Step 403 is set up the control connection of business datum between the CA among UE and the MA; Because present embodiment is with the streaming media service data instance, so this control connection comprises that TCP/IP connects and the control connection of RTSP, and wherein, the TCP/IP connection is used to carry RTSP agreement or other media stream in real time interaction protocol.

The process of specifically setting up control connection is:

UE initiates to insert request, comprise purpose information in this request, after CA in the multicast agent module among the RAN monitors access request from UE, judge that whether the purpose IP address in this request is the preassigned IP address that is used to provide the data source of data service service, if, then carry out access control, with and UE between set up control connection, otherwise the CA in the multicast agent module does not process.

Above-mentioned purpose information is purpose IP address, or purpose IP address and port numbers.

Because building, above-mentioned control connection comprises that TCP/IP connects and the control connection of RTSP, therefore, after TCP/IP connection foundation is finished, UE is just undertaken alternately by the CA in the multicast agent module among RTSP agreement and the RAN, to obtain to receive the reception attribute information of business datum, at least comprise in this reception attribute information and wait to receive the business datum content identification, the coded format of IP address, port numbers, video and the audio frequency of the multicast packet of bearer service content.Owing to be the desired content of RTSP agreement of standard, do not do detailed description here.

Step 404～405, UE initiates RTSP playing request (PLAY), and this request is mainly used in the triggering business datum and begins to play; After CA in the RAN detects this playing request, return the playing request confirmation, afterwards, send a notification message, begin to carry out the operation that sends the streaming media service data with notice DA to DA to UE.DA be used for will receive directly from the business datum of data source, as the streaming media service data, issue down.

Step 406 after UE receives this message, receives business datum in the data transmission channel of having set up.

By above-mentioned realization flow as can be seen, for the core net of network side part, data source only need send a piece of data and get final product to the DA among the RAN, thereby has saved network side core net resource partly greatly.And because many processing need not arrive the processing of CN and streaming media server side again, the big quickening of flow processing speed is obviously felt the user and the quickening of the speed of continuing has been improved service quality.

In above-mentioned steps 406, the described data transmission channel of having set up can be the data transmission channel of the special use of setting up respectively at each UE, promptly sets up the data transmission channel of a special use between RAN and each UE, as the DCH channel; Also can be in each sub-district, only to set up a data transmission channel at each business datum content identification, be that every kind of business datum is only set up a public data transmission channel in the same sub-district, as the FACH channel, can under this same channel, receive business datum so that receive certain professional user in the same sub-district like this.

If the data transmission channel of being mentioned of having set up is the designated lane of setting up respectively at each UE, then receive after notice from CA begins to carry out the operation that sends the streaming media service data as DA, DA begins the downlink dedicated transmission channel to the UE place of initiating playing request, on DCH, send business datum.Above-mentioned downlink dedicated transmission channel DCH set up process and prior art is identical, in this also no longer repeat specification.

If the data transmission channel of being mentioned of having set up is the highway that a plurality of UE share in the same sub-district, it is pre-configured when then the shared multicast transmission passage of this bar is set up in the sub-district, just dispose afterwards on this passage not sending service data, and the sending service data just not can not take the resource of eating dishes without rice or wine, only can take a yard resource, treat that customer requirements just sends business datum when receiving.Have again, a plurality of UE use under the situation of sharing transmission channel in same sub-district, when DA receive from CA begin to carry out the notice that sends the streaming media service data manipulation after, DA adds up and receives the number of users that this UE requires the business datum play in the sub-district, the current place of UE of this initiation playing request, if this number of users becomes non-zero by zero, DA begin descending common transmission passage, on FACH, send the desired business datum of this UE; If number of users is not by the zero non-zero that becomes, then no longer carry out the operation that starts this business datum of transmission, because DA is for this sub-district has sent this business datum at this moment, promptly DA only does statistical operation at this moment.

Certainly, the number of users of each certain business datum of cell access also can be added up by the RRC in the RAN, and by the number of users of RRC according to this certain business datum of cell access, directly notice DA starts to this professional common signal channel transmission of carrying of this sub-district professional, promptly when number of users when zero becomes non-zero, this professional common signal channel of carrying that RRC notice DA starts to this sub-district sends professional.

In addition, if network has been preconfigured to RAN to the data encryption of eating dishes without rice or wine, then in step 401, initiate to comprise in the RRC connection request cause value " multicast service request (Multicast Service Request) " of expansion when UE and RAN are mutual, the cause value that detects the RRC connection request as RAN is during for " multicast service request ", RRC can advance special processing to the encryption flow of this UE, just " cryptographic algorithm " of RRC in issuing the encrypted command of this UE is set to algorithm zero, promptly do not start air interface (UU interface) encryption function.

Relevant user initiates the cause value in the RRC connection request, in 3GPP 25331, done clearly regulation, and also having defined spare1 in this regulation is the cause value that system reserves to spare12, at this, can choose spare1 any one in the spare12 wantonly and be used for carrying " multicast service request ", in this application spare10 is defined as " multicast service request ".

A plurality of UE use under the situation of sharing transmission channel in same sub-district, and the shared data transmission passage is pre-configured in transport layer, is that example specifies the process that is configured in transport layer below with FACH.

Figure 5 shows that realization flow figure at transport layer configuration shared data transmission passage.This realization flow is that example describes with the FACH channel.

According to the WCDMA agreement, UE selects the rule of FACH to be: when UE is in idle pulley, select according to the SCCPCH number of broadcasting in the system message 5 and the IMSI of itself, selection mode is the mould that IMSI gets the SCCPCH number, how many moulds equals, and just selects the FACH that is disposed among that SCCPCH; When UE is in connection mode, SCCPCH number according to broadcasting in the system message 6, the URNTI that network side is distributed to UE selects, selection mode is the mould that URNTI gets the SCCPCH number, how many moulds equals, just select the FACH that disposed among that SCCPCH, owing to be the selection mode standard agreement of FACH channel, in this description of exceeding.

RAN is before reshuffling, the business datum content identification that this UE that need report according to the multicast agent module among the RAN selects number, redistribute the URNTI of this mobile phone, and change URNTI by the UTRAN information change message informing UE of WCDMA standard agreement, this process is seen Fig. 3 .5.

Step 501, CA indication RRC in the multicast agent module among the RAN is configured to the FACH channel pattern, because existing network normally adopts the DCH channel pattern to carry out the transmission of business datum, therefore, indication RRC is configured to the FACH channel pattern, just indicate RRC that DCH channel pattern reprovision is changed to the FACH channel pattern, should dispose indication usually and be abbreviated as D2F (DCH to FACH) and reshuffle, and comprise the selected business datum content identification of UE in should configuration indicating.

Step 502 after RRC receives above-mentioned indication, disconnects the downstream IP data channel of having set up, reshuffle at self, afterwards, reshuffle the indication Shen from D2F and obtain the business datum content identification, recomputate the wireless network identification of this UE according to this business datum content identification.Concrete account form is same as the prior art.

Owing to be to be example with the WCDMA network, therefore above-mentioned wireless network identification comprises that UTRAN Radio Network Temporary Identifier (URNTI) and cell-radio network temporarily identify (CRNTI).

Step 503, RRC comprises the URNTI and the CRNTI that have recalculated to the information that UE sends change UTRAN in this information.

Step 504 after UE receives the described changed information of step 504, changes to URNTI and the CRNTI that receives with self URNTI and CRNTI, after change finishes, returns the affirmation information of change UTRAN to RRC.

Step 505～506, RRC sends the D2F reconfigure command to UE, and UE reshuffles at self after receiving this order, and afterwards, UE returns the response of D2F reconfigure command to RRC.

Step 507, RRC discharges the dedicated channel resource that current this UE takies, and returns the response that D2F reshuffles indication for the CA in the multicast agent module.

Under same shared channel, receive the implementation method of business datum simultaneously for a plurality of UE, provide in the Chinese patent application of " making a plurality of users receive the method for data service under same channel " in application number that the applicant the proposes denomination of invention for " 200510006948.9 ", the application is no longer to this detailed description.

Figure 6 shows that each entity relationship schematic diagram that network side is eated dishes without rice or wine.Wherein, Fig. 6 a is each entity relationship schematic diagram that existing network side is eated dishes without rice or wine, each entity relationship schematic diagram that network side was eated dishes without rice or wine when Fig. 6 b received business datum for the UE employing dedicated data transmission passage of using initiation access request of the present invention, each entity relationship schematic diagram that network side was eated dishes without rice or wine when Fig. 6 c adopted the shared data transmission passage to receive business datum for application initiation of the present invention inserts the UE that asks.In each figure shown in Figure 6, dotted line (----) expression upstream data, solid line (-) expression downlink data, chain-dotted line The expression control messages.

Referring to Fig. 6 a, a medium access control special use (MACD, Medium AccessControl Dedicated) entity is arranged in each UE, five radio link control entities (RLC), wherein, RLC1 is signaling RLC to RLC4, RLC5 is professional RLC.RLC1 and RLC5 are non-affirmation (UM) pattern of replying, and RLC2, RLC3, RLC4 are for replying affirmation (AM) pattern, and RLC1～4 all are used to carry RRC message.RLC5 is used to carry the application layer control messages.Each UE waits that receiving business datum is mapped in upward transmission of special-purpose separately DCH respectively behind RLC5 separately, and the upstream data of UE transmission also transfers to network side through DCH.

Referring to Fig. 6 b, a MACD entity is arranged in each UE, five RLC, wherein, RLC1 is signaling RLC to RLC4, RLC5 is professional RLC.RLC1 and RLC5 are the UM pattern, and RLC2, RLC3, RLC4 are the AM pattern, and RLC1～4 all are used to carry RRC message.RLC5 is used to carry the application layer control messages.Owing to be that the existing dedicated data transmission passage of application is each UE service data transmission in the present embodiment, therefore, in the multicast agent module DA receive from CA begin to start the notice that sends data after, give the UE of appointment with what receive from the business data transmission of data source, this business datum is transmitted through being mapped in respectively behind the RLC5 of each UE on the special-purpose separately DCH channel, and the upstream data of UE transmission also transfers to network side through DCH.

Above-mentioned DA is made of the entity with distribution function, and every kind of business datum, each streamium TV program that promptly streaming media server provided, corresponding respectively entity with distribution function.That is to say that DA need duplicate a business datum for each UE.Owing to, therefore do not need to add up the reception number of users of every kind of business datum at the corresponding data transmission channel of each UE of transport layer.

Referring to Fig. 6 c, a MACD entity is arranged in each UE, five RLC, wherein, RLC1 is signaling RLC to RLC4, RLC5 is professional RLC.RLC1 and RLC5 are the UM pattern, and RLC2, RLC3, RLC4 are the AM pattern, and RLC1～4 all are used to carry RRC message.RLC5 is used to carry the application layer control messages.CA in the multicast agent module disconnects the downstream IP data channel by the RLC5 among each UE of RRC module controls, and control RRC module is carried out D2F and reshuffled, and afterwards, notice DA is so that DA begins executable operations.DA in the multicast agent module in the present embodiment is used for the bearing downlink business data flow and statistics receives number of users, and its business datum from data source that will receive issues down by sharing the FACH channel.This business datum that issues is mapped in the FACH channel that a plurality of UE share after medium access control public (MACC, MediumAccess Control Common).The upstream data of UE transmission transfers to network side through Random Access Channel (RACH, Random Access Channel).

Above-mentioned DA is by the public radio link control entity of a plurality of UE of UM pattern (RLC5 ') and a plurality of medium access control dedicated multicast (MACDm, MACD Multicast) functional entity constitutes, and every kind of business datum sign is the respectively corresponding RLC5 ' of each streamium TV program and a MACDm.Can be implemented in like this in each sub-district at every kind of business datum, promptly each program is only set up a transmission channel.That is to say that DA need duplicate a business datum for each sub-district at every kind of business datum.

RLC5 ' in the DA is used to realize access control, MACDm is used to add up in each sub-district and the number of users and the startup of corresponding this business datum of reception of each business datum content identification send business datum, if existed and the corresponding data transmission channel of the desired business datum content identification of this UE in the sub-district, the current place of UE of initiation playing request, then MACDm no longer sends business datum for this sub-district starts, and only adds up number of users; If also do not exist and the corresponding business datum of the desired business datum content identification of this UE in the sub-district, the current place of UE of initiation playing request, then MACDm sends business datum for this sub-district again, and the statistics number of users.That is to say, if the number of users that receives a certain business datum content in the sub-district then begins to start the transmission business datum for becoming non-zero by zero.In addition, when the UE request discharges, send the request of release by RACH, DA in the multicast agent module subtracts one with the number of users of this business datum content of current reception in this sub-district, judges whether the number of users that receives this business datum is by the non-zero vanishing, if, illustrate that then the current user of not having receives this business datum in this sub-district, at this moment, DA stops to send business datum to this sub-district in the multicast agent module, and notice CA discharges and the shared resource of this UE; Otherwise the DA in the multicast agent module only notifies CA to discharge and the shared resource of UE.

Similarly, the number of users of each certain business datum of cell access also can be added up by the RRC in the RAN, and by the number of users of RRC according to this certain business datum of cell access, directly notice DA starts or stops to this professional common signal channel transmission of carrying of this sub-district professional, promptly when number of users when zero becomes non-zero, this professional common signal channel of carrying that RRC notice DA starts to this sub-district sends professional, when number of users when non-zero becomes zero, RRC notice DA stops to send professional to this professional common signal channel of carrying of this sub-district.

Below mainly introduced two kinds of implementations of setting up the transport layer data transmission channel, i.e. the implementation of two kinds of multicasts, a kind of is that implementation is: set up a data transmission channel in transport layer at each UE; Another kind is that implementation is: is that each program set up a data transmission channel at each business datum content identification in transport layer in to each sub-district.

Which kind of implementation no matter, the major function of the DA in the multicast agent module all is the business datum that is used to receive from data source, and this business datum is issued down.For the DA in the multicast agent module in the RAN, it can have multiple mode to receive the business datum of data source.Referring to Fig. 7, Figure 7 shows that the DA in the multicast agent module in the RAN receives the implementation schematic diagram of the business datum of data source.DA in the multicast agent module can directly receive the business datum from data source, shown in the fine line among Fig. 7; Also can promptly adopt the business datum of bypass technology reception, shown in the heavy line among Fig. 7 through the business datum of the reception of the network except that CN from data source from data source; Can also utilize the routing function among the CN to set up a passage that is specifically designed to the transport multicast business datum in advance, DA in the multicast agent module this special data transmission channel in CN receives the business datum from data source, as the GGSN in CN, SGSN, reception is from the business datum of data source, shown in the chain-dotted line among Fig. 7.Have again, for the DA in the multicast agent module in the RAN, because it has protocol layer shown in Fig. 3 b, therefore, DA both can receive unicast data, also can receiving multicast data, be unicast data then after the unicast data address transition is the multicast packet address, carry out follow-up distribution processor again if receive.

Introduce the process that multicast discharges below.

Figure 8 shows that the overall realization flow figure of multicast transmission passage of the release business datum of an embodiment.Present embodiment is still and acts on behalf of streaming media server with MA is that example describes.

Step 801, UE initiates to discharge request, comprises purpose information in this request.Described purpose information is purpose IP address, or purpose IP address and port numbers.

Step 802, after CA in the multicast agent module among the RAN monitors release request from UE, judge that whether the purpose information in this request be the preassigned purpose information that is used to provide the data source of data service service, if, then execution in step 703, otherwise the CA in the multicast agent module does not process.

CA in the step 803, multicast agent module carries out releasing operation, afterwards, returns the release response to UE.

Because the implementation difference of the data transmission channel of transport layer, the concrete operations that therefore discharge the service data group broadcast transmission channel are also different.

If have a business data transmission passage respectively at each UE in transport layer, then the releasing operation of the execution of the CA described in the above-mentioned steps 803 is: CA notice DA stops to send business datum to the downlink dedicated transmission channel of this UE, control connection between releasing network side and the UE side and Radio Resource control promptly discharge the downlink data transmission passage at this UE special use.This control connection is that the Streaming Media control connection is connected with TCP, and this Streaming Media control connection is the RTSP agreement in the present embodiment.The process of concrete release channel is same as the prior art, no longer describes in detail at this.After DA among the MA receives above-mentioned notice, then stop to send business datum to the downlink dedicated transmission channel of this UE.Owing to be to set up a data transmission channel, at this moment, do not need to add up the number of users of reception at each UE.

If when transport layer is data transmission channel of program identification existence at each the business datum content identification in each sub-district, then further comprise the business datum content identification in the release request described in the above-mentioned steps 801; The releasing operation that CA described in the step 803 carries out is: CA Control Network side is reshuffled, concrete reconfiguration course is referring to Fig. 9, and shared control connection and the Radio Resource control of release UE side, this control connection is that the Streaming Media control connection is connected with TCP, and this Streaming Media control connection is the RTSP agreement in the present embodiment.This be because, the public data transmission channel is pre-configured, when UE requires to receive data, then on this transmission channel, send data, when not having UE to receive data, then no longer send data on this transmission channel, therefore, when the release request that receives from UE, only need to discharge the shared resource of this UE and get final product.

When carrying out the statistical operation of number of users by DA, when CA Control Network side is reshuffled, notice DA stops on this data transmission channel of sharing and sends business datum, after DA receives notice from CA, the number of users of this business datum content of current reception in this sub-district is subtracted one, judge whether the number of users that receives this business datum is by the non-zero vanishing, if, illustrate that then the current user of not having receives this business datum in this sub-district, at this moment, DA in the multicast agent module stops to send business datum to this sub-district, otherwise the DA in the multicast agent module does not stop to send business datum, promptly only number of users is added up.

When carrying out the statistical operation of number of users by RRC, when CA Control Network side is reshuffled, RRC in the RAN subtracts one with the number of users of this business datum content of current reception in this sub-district, judge then whether the number of users that receives this business datum is by the non-zero vanishing, if, then send the notice that stops to send data to DA, after DA receives this notice, stop at and send the desired business datum of this UE on the descending common transmission passage, otherwise the RRC in the RAN no longer processes, and DA does not stop to send business datum yet.

Figure 9 shows that and discharge the realization flow figure that when sharing the multicast transmission channel transport layer is reshuffled.

Step 901, CA indication RRC in the multicast agent module is configured to the DCH channel pattern, because current is the FACH channel pattern, therefore, indication RRC is configured to the DCH channel pattern, just indicate RRC to be changed to the DCH channel pattern, should dispose indication usually and be abbreviated as F2D (FACH to DCH) and reshuffle by current FACH channel pattern reprovision.

Step 902, RRC receives after F2D reshuffles indication, reshuffles at self, soon self is configured to the DCH pattern, and afterwards, RRC sends the F2D reconfigure command to UE,

Step 903, UE also reshuffles at self after receiving this order, soon self is configured to the DCH pattern, and afterwards, UE returns the response of F2D reconfigure command to RRC.

Step 904, RRC sets up the DCH channel and discharges the FACH channel, the RLC5 entity that is used for carrying IP data channel in the order RAN is replied the downlink data of reception from CN, and is normal even the downstream IP data channel that has disconnected is recovered, and reshuffles the indication response for the CA answer F2D in the multicast agent module.

So far, reconfiguration operation is finished.

Because UE has mobility, the process to cell update describes below.

If in transport layer is the transmission channel that has a special use at each UE respectively, then owing to be that the dedicated data transmission passage provides service for this UE, so the processing procedure of cell update is consistent with the processing procedure of prior art, no longer describes in detail at this; It is program identification when having a transmission channel at the sign of each business tine in each sub-district that following emphasis is described in transport layer, carries out the process of cell update.

Figure 10 shows that the schematic flow sheet of cell update.In the present embodiment sub-district, the current place of UE is called the cell-of-origin, the to be switched sub-district that enters is called Target cell, and carry out the statistical operation of number of users in the present embodiment by DA.

Step 1001, UE initiates the request of cell update to RRC, comprises the identification information of Target cell in this request.

Step 1002, RRC judges whether the common channel data of carrying in Target cell and cell-of-origin is the same after receiving request from the cell update of UE, if the same, direct execution in step 1005 then, if different, then execution in step 1003;

Step 1003～1004, RRC recomputates URNTI and the CRNTI of this UE, afterwards, send the information of change UTRAN to UE, comprise the URNTI and the CRNTI that have recalculated in this information, UE is according to the information that receives, and self URNTI and CRNTI changed to URNTI and the CRNTI that receives, after change finishes, return the affirmation information of change UTRAN to RRC.

Step 1005, the CA in the RRC notice multicast proxy module, UE has carried out cell update, by CA notice DA, all comprises the identification information of Target cell and the sign of initiating the UE of update request in the above-mentioned notice.

DA in step 1006～1007, multicast agent module adds one with the corresponding number of users of business datum content identification that receives with this UE in the Target cell; Judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE is to become non-zero by zero, if, then the common transmission passage that starts in Target cell to this business datum of carrying sends data, and then execution in step 1008, otherwise, then direct execution in step 1008.

DA in step 1008～1009, multicast agent module subtracts one with the corresponding number of users of business datum content identification that receives with this UE in the cell-of-origin; Judge then whether the number of users in the corresponding data transmission channel of business datum content identification that receives with this UE in the cell-of-origin is non-zero, if, then direct execution in step 1010, otherwise, send business datum in the corresponding data transmission channel of business datum content identification that DA stops to receive with this UE in the cell-of-origin, and then execution in step 1010.

Step 1010, the DA notice CA operation in the multicast agent module is finished, and CA gives the RRC return response message that is finished.

Step 1011 after RRC receives this response, is returned the cell update response to UE.

Realized cell update when so far, on the UE common signal channel, receiving business datum.

If carry out the statistical operation of number of users by RRC, then after above-mentioned steps 1004 is finished, RRC adds one with the corresponding number of users of business datum content identification that receives with this UE in the Target cell, judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE is to become non-zero by zero, if, then notify the DA in the multicast proxy module to begin to send data, DA receives this notice back and starts in Target cell to the common transmission passage transmission data of carrying this business datum, and returns the response message of executable operations to SACU; And then execution in step 1008, otherwise then direct execution in step 1008; In step 1008, by RRC the corresponding number of users of business datum content identification that receives with this UE in the cell-of-origin is subtracted one, judge then whether the number of users in the corresponding data transmission channel of business datum content identification that receives with this UE in the cell-of-origin is non-zero, if, then do not process, otherwise, DA in the notice multicast proxy module stops to send data, after DA receives this notice, send business datum in the corresponding data transmission channel of business datum content identification that stops in the cell-of-origin receiving, and give the RRC return response message that is finished with this UE; At last, remain by RRC and return cell update response to UE.

Owing to be to be example with WCDMA, described multicast agent module can be arranged in the RNC among the RAN, also can be arranged in the NodeB among the RAN, if be arranged in the RNC, the inter-process that is RNC alternately between then above-mentioned all multicast agent modules and the RRC, if be arranged in the NodeB, then above-mentioned all multicast agent modules and RRC are mutual between NodeB and the RNC alternately.If the multicast agent module is arranged in the RNC, then there is the switching problem of striding RNC, specify the implementation procedure of striding RNC below.

Figure 11 shows that the handoff procedure flow chart when striding RNC.At this, sub-district, the current place of UE is called the cell-of-origin, the to be switched sub-district that enters is called Target cell, the current affiliated RNC of UE is called source RNC, multicast agent module among the RNC of this source is called source multicast agent module, to be switched RNC is called Target RNC, and the multicast agent module in this Target RNC is called target multicast proxy module.

Step 1101, the RRC of the RRC among the RNC of source in Target RNC sends and joins request.

Step 1102～1103, the CA of RRC in the Target RNC in target multicast proxy module initiates to join request, by CA notice DA, DA in the target multicast proxy module will add one with this UE corresponding number of users of business datum content identification to be received in the Target cell, judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE is to become non-zero by zero, if, then in Target cell, send business datum with starting on the corresponding transmission channel of business datum content identification that this UE receives, return response message for then the RRC in the Target RNC, otherwise, return response message directly for the RRC in the Target RNC.

Step 1104, the RRC in the Target RNC sends the response that joins request for the RRC among the RNC of source.

Step 1105～1106, RRC among the RNC of source sends the request of release for the CA in the multicast agent module of source, by CA notice DA, DA in the multicast agent module of source will subtract one with this UE corresponding number of users of business datum content identification to be received in the cell-of-origin, judge then whether the number of users in the corresponding transmission channel of business datum content identification that receives with this UE in the cell-of-origin is non-zero, if, return response message then directly for the RRC among the RNC of source, otherwise, stop at the transmission business datum of the corresponding data transmission channel of business datum content identification that receives with this UE in the cell-of-origin, and then return response message for the RRC among the RNC of source.

So far, when receiving business datum on the UE common signal channel, realized striding switching between the RNC.Similarly, stride in the flow process that RNC switches above-mentioned, also can be carried out the statistical operation of number of users by RRC, concrete mode is identical with executive mode in the cell update flow process, in this no longer repeat specification.

DA in the above all multicast agent module both can exist with the form of single-stage, also can exist with multistage form, when DA exists with multistage form, referring to Figure 12.

Figure 12 shows that the realization principle schematic of multicast agent module memory at two-stage DA.In the present embodiment, suppose that the multicast agent module is divided into two-stage: the multicast packet agent unit (LDAU of low level, and suppose that this multicast agent module is arranged among the RNC LowerData Agent Unit) and high-level multicast packet agent unit (HDAU, High Data Agent Unit).

If LDAU receives the broadcast notice from CA, then LDAU adds one with the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area, judge then whether the corresponding number of users of business datum content identification that receives with the UE that initiates request in the current area becomes non-zero by zero, if, then send the request of access to high-level multicast packet agent unit HDAU, the common transmission passage that is started to this business datum of carrying by HDAU sends data, otherwise LDAU does not process.

Figure 12 only is that example describes with the two-stage, certainly, also can have the above multicast packet agent unit of two-stage, and at this moment, HDAU will carry out alternately with higher HDAU as required, and concrete interactive mode is consistent with the characteristic of LDAU, in this no longer repeat specification.Similarly, above-mentioned is that to carry out number of users statistics with LDAU or HDAU be that example describes, and can certainly be carried out the statistical operation of number of users by RRC.

This shows, no matter which entity to carry out the number of users statistical operation by, minimum LDAU is mainly used in the following multicast user groups of management as multicast router, thereby alleviate the processing burden of HDAU, realize distributed treatment, and HDAU only is responsible for LDAU is managed, and its management method is consistent to the management method of sub-district with the LDAU management.Have, embodiment shown in Figure 12 has been arranged on multistage multicast agent module among the RNC again, and when practical application, this multistage multicast agent module also can be arranged among the NodeB, and specific implementation is identical with implementation in being arranged on RNC.

If the multicast agent module is arranged in the RNC, can make the multicast agent module utilize hardware based multicast functionality realization function of data distribution in the RNC, as utilizing based on IP multicast function of exchange, or utilize ATM multicast function of exchange, or utilize the multicast function of exchange of multiple service platform, multi-cast business data is distributed to the LDAU of low level by HDAU, and the multicast data delivery that can simplify like this in the RNC is handled, and provides reliable QOS to guarantee simultaneously.

If the multicast agent module has been arranged among the RNC, no matter be single-stage or multistage, for NodeB, following several implementation can also be arranged.

Mode one: the NodeB side is left intact, and promptly the multicast agent module among the RNC is directly at setting up a transmission channel for each business datum content identification in each sub-district.The advantage of this implementation be NodeB without any change, but need take IUB interface resource between a large amount of RNC and the NodeB.Referring to Figure 12.

Mode two is provided with multi-case data distribution agency (MDDA, Multicast DataDistribute Agent) module in NodeB, realized the function of distributing to each sub-district by the MDDA in the NodeB.This MDDA module receives the business datum from RNC, is distributed to each sub-district after as required the business datum that receives being duplicated and sends a.Adopt this mode only to need between RNC and NodeB, to set up a data transmission channel, send a business datum and get final product, thereby saved IUB interface resource between RNC and the NodeB at same business datum content identification.Referring to Figure 13, in RNC, be provided with the two-stage agency among this embodiment, in NodeB, be provided with MDDA.

More than all embodiment all be to be that example describes with the WCDMA network, certainly, the described method of the application is equally applicable to CDMA and GSM network.If cdma network, then described multicast agent module can be arranged on the BSC among the RAN, usually this BSC is designated as CBSC, also can be arranged on the BTS among the RAN, usually this BTS is designated as CBTS, if the GSM network, then described multicast agent module can be arranged on the GBSC among the RAN, usually this BSC is designated as GBSC, also can be arranged on the BTS among the RAN, usually this BTS is designated as GBTS.No matter in which network, realize that the handling process of multicast is constant, the entity that is concrete executable operations is different and different according to network.

Because the above idiographic flow all is to be example with WCDMA, therefore the entity that above-mentioned and UE carry out control connection is RRC, certainly, if other mobile networks, above-mentioned RRC will be the corresponding entity among other mobile networks, at this, the controlled entity of all similar RRC might as well be referred to as signaling and controlled processing unit (SACU, Signal And Control Unit).

The above only is preferred embodiment of the present invention, and is in order to restriction the present invention, within the spirit and principles in the present invention not all, any modification of being done, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1, a kind of implementation method of the multi-cast business data based on the mobile network is characterized in that, the multicast agent module is set on wireless access network RAN, waits that the UE and the CN that receive business datum carry out alternately, activates PDP, and this method is further comprising the steps of:

2, method according to claim 1 is characterized in that,

Described multicast agent module is made of control agent CA and agent data DA;

3, method according to claim 2 is characterized in that,

The described transmission channel of having set up is the data transmission channel of the special use of setting up at each UE between transport layer RAN and UE;

4, method according to claim 2 is characterized in that,

The shared data transmission passage of the described transmission channel of having set up for setting up in advance at each business datum content identification for each sub-district at transport layer RAN;

5, method according to claim 4 is characterized in that, the process of setting up of the described shared data transmission passage of setting up in advance may further comprise the steps:

05) SACU discharges the channel resource that current UE takies.

6, method according to claim 5 is characterized in that, when described network was WCDMA, described SACU was RRC, and described wireless network identification is that UTRAN Radio Network Temporary Identifier URNTI and cell-radio network temporarily identify CRNTI; Described indication and the reconfigure command of reshuffling is respectively D2F and reshuffles and indicate and the D2F reconfigure command; The channel resource that described current UE takies is a dedicated channel resource.

7, method according to claim 1, it is characterized in that described UE and CN carry out alternately, comprise at least in the process of activation PDP and set up the Radio Resource control connection, if network has been preconfigured to RAN the data of eating dishes without rice or wine are encrypted, then this method further comprises:

8, method according to claim 2 is characterized in that, the mode that the DA in the described multicast agent module receives from the business datum of data source is:

9, according to claim 2 or 3 described methods, it is characterized in that, the business datum that DA in the described multicast agent module receives from data source is unicast data or multicast packet, is unicast data then unicast data is converted to multicast packet if receive, and carries out subsequent operation again.

10, according to claim 1 or 7 described methods, it is characterized in that this method further comprises:

11, method according to claim 10 is characterized in that,

Described multicast agent module is made of control agent CA and agent data DA;

12, method according to claim 10 is characterized in that,

Described multicast agent module is made of control agent CA and agent data DA;

Described resource release operations may further comprise the steps:

13, method according to claim 12 is characterized in that, the operation that described CA Control Network side is reshuffled may further comprise the steps:

UE reshuffles at self according to the order that receives.

14, method according to claim 13 is characterized in that, when described network was WCDMA, described SACU was RRC; Described indication and the reconfigure command of reshuffling is respectively F2D and reshuffles and indicate and the F2D reconfigure command.

15, according to claim 1,11 or 12 described methods, it is characterized in that, described control connection is that professional control connection is connected with TCP, described professional control connection can be the Streaming Media control connection, it includes but not limited to real-time stream media protocol RTSP, described professional control connection also can be the control connection that file transmits, and it includes but not limited to a little arrive the unidirectional file transfer protocol (FTP) FLUTE of multiple spot.

16, method according to claim 1, it is characterized in that, when described multicast agent module is made of control agent CA and agent data DA, and when there are a shared data transmission channel in RAN and each sub-district at each business datum content identification, further comprise, UE strides cell update, and described cell updating course may further comprise the steps:

17, method according to claim 1, it is characterized in that, when described multicast agent module is made of control agent CA and agent data DA, and when there are a shared data transmission channel in RAN and each sub-district at each business datum content identification, further comprise, UE strides cell update, and described cell updating course may further comprise the steps:

Vi) SACU returns the cell update response to UE.

According to claim 16 or 17 described methods, it is characterized in that 18, when described network was WCDMA, described SACU was RRC, described wireless network identification is that UTRAN Radio Network Temporary Identifier URNTI and cell-radio network temporarily identify CRNTI.

19, method according to claim 2 is characterized in that, the agent data DA in the described multicast agent module is made of the uniprocessing unit, or is made of two-stage or the processing unit more than the two-stage;

20, method according to claim 19, it is characterized in that, if WCDMA network, and when described multicast agent module was arranged in the RNC among the RAN, described multicast agent module utilized hardware based multicast functionality in the RNC business datum to be sent to the multicast packet agent unit of low level from high-level multicast packet agent unit; Described hardware is the hardware platform of IP function of exchange, or ATM switching plane or multiple service platform.

21, method according to claim 19, it is characterized in that, if WCDMA network, and when described multicast agent module is arranged in the RNC among the RAN, further comprise: the multi-case data distribution with business datum distribution function is set in NodeB acts on behalf of the MDDA module, this MDDA module receives the business datum from RNC, is distributed to each sub-district after as required data being duplicated.

22, method according to claim 1 is characterized in that,

If the WCDMA network, described multicast agent module is arranged in the RNC among the RAN, or is arranged in the NodeB among the RAN; If cdma network, described multicast agent module is arranged on the CBSC among the RAN, or is arranged on the CBTS among the RAN; If the GSM network, described multicast agent module is arranged on the GBSC among the RAN, or is arranged on the GBTS among the RAN.

23, method according to claim 1 is characterized in that, described purpose information is purpose IP address, or purpose IP address and port numbers; The described reception attribute information of step b comprises and IP address, port numbers, speed and the coded format of waiting to receive the corresponding data of business datum content identification at least.

24, method according to claim 1 is characterized in that, described data source includes but not limited to streaming media server, and described business datum comprises but is not limited to the streaming media service data.