CN100512308C - Method for realizing multcast service - Google Patents
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- CN100512308C CN100512308C CNB2006100570960A CN200610057096A CN100512308C CN 100512308 C CN100512308 C CN 100512308C CN B2006100570960 A CNB2006100570960 A CN B2006100570960A CN 200610057096 A CN200610057096 A CN 200610057096A CN 100512308 C CN100512308 C CN 100512308C
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Abstract
The present invention provides multicasting service implementation method. It contains A, UE and server establishing point-to-point IP channel, and through said channel transmitting multicasting service start request to server; B, server through point-to-point IP channel transmitting multicasting start message to RNC; RNC according to received multicasting start message reconfiguring UE prattle channel to multicasting channel, and through point-to-point IP channel feeding back multicasting start confirmation to server; C, when ending receiving multicasting service, UE through point-to-point IP channel transmitting multicasting service ending request to server; D, server through point-to-point IP channel transmitting multicasting ending message to RNC; RNC according to received multicasting ending message reconfiguring UE prattle channel to unicast channel, and through point-to-point IP channel feeding back multicasting ending confirmation to server. Said invention reduces multicasting service modification to existed communication system in realizing multicasting service process.
Description
Technical field
The present invention relates to technical field of multicast, relate in particular to a kind of implementation method of multicast service.
Background technology
Multicast is meant from a data source and sends the point of data to the multiple spot technology to a plurality of users, it can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can realize the multimedia service multicast and the broadcasting of two-forty, realized of the efficient data transmission of network mid point to multiple spot, in a large number conserve network bandwidth, reduce offered load, effectively utilize Internet resources, complied with the trend of following mobile data development.
Referring to shown in Figure 1, the implementation procedure of multicast service mainly comprises following step in the prior art:
Step 101: subscriber equipment (User Equipment, UE) in the time of will receiving multicast service from network side, at first, UE sets up and packet data protocol (Packet Data Protocol by connecting, PDP) context activation, (Server) sets up the point-to-point IP tunnel with the multicast service server;
Wherein, UE and radio network controller (Radio Network Controller, RNC) passage between is a radio channel, RNC and ggsn (Gateway GPRS SupportNode, GGSN) passage between is general packet wireless service tunnel protocol (GPRS TunnelingProtocol, GTP) passage, the passage between GGSN and the Server are the public data network passage.For the UE that sets up the point-to-point IP tunnel with Server, the IP bag that RNC is responsible for coming from radio channel directly is forwarded on the GTP passage, and will directly be forwarded on the radio channel from the IP bag that the GTP passage comes.
Step 102:UE utilizes the point-to-point IP tunnel of setting up, and sends multicast service by the multicast service application layer protocol to Server and begins request;
The The data IP packet form that transmits on the IP tunnel, each IP bag all has source IP address and purpose IP address, and here, in the IP bag that multicast service begins to ask, source IP address is the IP address (UE IP) of UE, and purpose IP address is the IP address of Server.
Step 103:Server is by GGSN and service universal grouping wireless business supporting node (ServingGPRS Support Node, SGSN) radio network controller (Radio NetworkController under UE, RNC) send multicast and begin message, carry corresponding UE sign and multicast service identifier in this message;
The concrete processing procedure of step 103 is as follows: after Server receives that multicast service that UE sends begins request, find GGSN under the UE according to the IP address of UE, and send multicast to this GGSN and begin message, GGSN begins the multicast that receives forwards again to SSGN under the UE, by SGSN multicast is begun forwards to RNC under the UE at last.
After step 104:RNC receives that multicast begins message, return multicast by SGSN and GGSN to Server and begin to confirm;
UE sign and multicast service identifier that step 105:RNC begins to carry in the message according to the multicast that receives are reconfigured to the channel of eating dishes without rice or wine of UE on the multicast channel that transmits this multicast service;
If first receives the UE of this multicast service in this UE current affiliated subdistrict that is himself, then RNC need allocate the multicast channel that transmits this multicast service in advance, and transmits multicast service on the multicast channel that distributes.
Step 106:UE is receiving multicast business on the multicast channel of reshuffling;
Step 107: if UE wants to finish the reception of multicast service, then utilize the point-to-point IP tunnel of setting up, send the multicast service ending request to Server by the multicast service application layer protocol;
After step 108:Server received the multicast service ending request that UE sends, RNC under UE sent the multicast end by GGSN and SGSN, carries corresponding UE sign in this message;
After step 109:RNC receives the multicast end, return multicast by SGSN and GGSN to Server and finish to confirm;
Step 110:RNC is according to the UE sign of carrying in the multicast end that receives, and the channel of eating dishes without rice or wine of UE is reconfigured on the unicast tunnel;
If last receives the UE of this multicast service in this UE current affiliated subdistrict that is himself, then RNC should stop to transmit this multicast service, and discharges the multicast channel that transmits this multicast service.
After step 111:UE stops receiving multicast business, continue to handle other business or get back to idle pulley.
As seen from the above description, in multicast service implementation method shown in Figure 1, the transmission that multicast begins that message, multicast begin to confirm between RNC and Server, multicast end and multicast finish to confirm all needs to transmit by SGSN and these two nodes of GGSN, promptly this method need be changed SGSN and these two nodes of GGSN, that is to say that existing multicast service implementation method need be done very big change to existing communication system.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of implementation method of multicast service, when realizing multicast service, reduce the change of multicast service existing communication system.
For achieving the above object, technical scheme provided by the invention may further comprise the steps:
A, user equipment (UE) and server S erver set up the point-to-point IP tunnel, and begin request by the point-to-point IP tunnel of having set up to Server transmission multicast service;
After B, Server receive that multicast service begins request, begin message by UE and the radio network controller (RNC) transmission multicast of having set up under described UE of the point-to-point IP tunnel between Server; RNC begins message according to the multicast received, the channel of eating dishes without rice or wine of UE is reconfigured on the multicast channel, and returns multicast by the point-to-point IP tunnel of having set up to Server and begin to confirm;
C, when finishing receiving multicast business, UE sends the multicast service ending request by the point-to-point IP tunnel of having set up to Server;
After D, Server receive the multicast service ending request, send the multicast end by UE and the RNC under described UE of the point-to-point IP tunnel between Server that has set up; RNC is according to the multicast end received, the channel of eating dishes without rice or wine of UE is reconfigured on the unicast tunnel, and returns multicast by the point-to-point IP tunnel of having set up to Server and finish to confirm.
Wherein, further comprise before the step B: the IP address ServerIP Addr that distributes RNC to use for Server.
Described multicast begins message, multicast begins affirmation, multicast end and multicast and finishes to confirm by the transmission of IP bag.
The source IP address that described multicast begins to carry in the message is that Server IP Addr, purpose IP address are the IP address UE IP of UE;
The source IP address that described multicast carries in beginning to confirm is that UE IP, purpose IP address are Server IPAddr.
The source IP address that carries in the described multicast end is that Server IP Addr, purpose IP address are the IP address UE IP of UE;
The source IP address that described multicast carries in finishing to confirm is that UE IP, purpose IP address are Server IPAddr.
Described multicast begins message and carries multicast service identifier; The described RNC of step B begins message according to the multicast of receiving and the channel of eating dishes without rice or wine of UE is reconfigured on the multicast channel is specially: RNC with the channel of eating dishes without rice or wine of UE be reconfigured to transmit described multicast service identifier on the multicast channel of corresponding multicast service, described UE is the UE that transport multicast begins the general packet wireless service tunnel protocol GTP passage correspondence of message.
The described UE of step D is the UE of the GTP passage correspondence of transport multicast end.
This shows, among the present invention, between RNC and Server by the UE that set up and the point-to-point IP tunnel between Server, directly communicate, not by SGSN and GGSN forwarding multicasting begin that message, multicast begin to confirm, multicast end and multicast finish message such as affirmation, need not to change these two nodes of SGSN and GGSN, when realizing multicast service, reduced the change of multicast service existing communication system.
Description of drawings
Fig. 1 is the implementation method flow chart of multicast service in the prior art;
Fig. 2 is the implementation method flow chart of multicast service in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, with reference to the accompanying drawings, the present invention is described in further detail.
As can be seen, Server has the visible IP of a UE address, utilizes this IP address from the description of background technology, and UE can be by the point-to-point IP tunnel and the Server direct communication of having set up.Therefore, for realizing the direct communication between RNC and Server, basic thought of the present invention is: be the Server reallocation visible IP of a RNC address (Server IP Addr), and on RNC, preserve Server IP Addr, according to this IP address, by the UE that set up and the point-to-point IP tunnel between Server, directly communicate between RNC and Server.
Referring to shown in Figure 2, the implementation procedure of multicast service mainly comprises following step among this embodiment:
Step 201:UE and Server set up the point-to-point IP tunnel;
The point-to-point IP tunnel of step 202:UE by setting up sends multicast service to Server and begins request;
After step 203:Server received that multicast service that UE sends begins request, by the UE that set up and the point-to-point IP tunnel between Server, RNC sent multicast and begins message under UE;
On the point-to-point IP tunnel, multicast begins message by the transmission of IP bag.Wherein, multicast begins message and carries the pairing multicast service identifier of multicast service that UE will receive, and the source IP address that this multicast begins message is the IP address of the visible Server of RNC, i.e. Server IP Addr; Purpose IP address is that the IP address of UE is UE IP.
Step 204:RNC detects the source IP address of each the IP bag that sends on the GTP passage, and whether the source IP address that compares the IP bag is identical with the Server IP Addr of preservation, if it is identical, then the IP bag is intercepted, and judge according to the type of message of IP bag whether this IP bag is that multicast begins message IP bag, if, then execution in step 205, otherwise, the IP bag of receiving is forwarded to radio channel, finish this handling process;
Step 205:RNC begins the GTP passage of message IP bag according to transport multicast, determine to want the UE of receiving multicast business, and the multicast service identifier that begins to carry in the message according to the multicast that receives, the channel of eating dishes without rice or wine of this UE is reconfigured on the multicast channel that transmits the pairing multicast service of this multicast service identifier;
Wherein, the UE of receiving multicast business is the UE that transport multicast begins the GTP passage correspondence of message.
If first receives the UE of this multicast service in this UE current affiliated subdistrict that is himself, then RNC need allocate the multicast channel that transmits this multicast service in advance, and transmits multicast service on the multicast channel that distributes.
Step 206: after reshuffling successfully, RNC returns multicast to Server and begins to confirm by the UE that set up and the point-to-point IP tunnel between Server;
On the point-to-point IP tunnel, multicast begins to confirm by the transmission of IP bag.Wherein, the source IP address that multicast begins to confirm is UE IP, and purpose IP address is Server IP Addr.
If Server receives that purpose IP address is the IP bag of Server IP Addr, illustrate that then this IP bag is the special IP bag that RNC sends, and just can know that according to the source IP address of this IP bag this IP bag is relevant with which UE.
Step 207:UE is receiving multicast business on the multicast channel of reshuffling;
Step 208: if UE wants to finish the reception of multicast service, then the point-to-point IP tunnel by setting up sends the multicast service ending request to Server;
After step 209:Server received the multicast service ending request that UE sends, by the UE that set up and the point-to-point IP tunnel between Server, RNC sent the multicast end under UE;
On the point-to-point IP tunnel, the multicast end is by the transmission of IP bag.The source IP address of this multicast end is that the IP address of the visible Server of RNC is that Server IP Addr, purpose IP address are that the IP address of UE is UE IP.
Step 210:RNC detects the source IP address of each the IP bag that sends on the GTP passage, and whether the source IP address that compares the IP bag is identical with the Server IP Addr of preservation, if it is identical, then the IP bag is intercepted, and judge according to the type of message of IP bag whether this IP bag is multicast end IP bag, if, then execution in step 211, otherwise, the IP bag of receiving is forwarded to radio channel, finish this handling process;
Step 211:RNC determines to finish the UE of multicast service according to the GTP passage of transport multicast end IP bag, and the channel of eating dishes without rice or wine of this UE is reconfigured on the unicast tunnel;
Wherein, the UE that finish multicast service is the UE of the GTP passage correspondence of transport multicast end.
If last receives the UE of this multicast service in this UE current affiliated subdistrict that is himself, then RNC should stop to transmit this multicast service, and discharges the multicast channel that transmits this multicast service.
Step 212: after reshuffling successfully, RNC returns multicast to Server and finishes to confirm by the UE that set up and the point-to-point IP tunnel between Server;
On the point-to-point IP tunnel, multicast finishes to confirm by the transmission of IP bag.Wherein, the source IP address that multicast finishes to confirm is UE IP, and purpose IP address is Server IP Addr.
If Server receives that purpose IP address is the IP bag of Server IP Addr, illustrate that then this IP bag is the special IP bag that RNC sends, and just can know that according to the source IP address of this IP bag this IP bag is relevant with which UE.
After step 213:UE stops receiving multicast business, continue to handle other business or get back to idle pulley.
In the present embodiment, unsuccessfully just send the situation that multicast begins to confirm or multicast finishes to confirm and occur for avoiding reshuffling, RNC sends to Server just that multicast begins to confirm or multicast finishes to confirm after the multicast channel that the channel of eating dishes without rice or wine of UE is reconfigured to multicast channel or UE is reconfigured to the unicast tunnel success.
As seen, utilize method of the present invention, need not begin that message, multicast begin to confirm by SGSN and GGSN forwarding multicasting, multicast end and multicast finish message such as affirmation, need not to change these two nodes of SGSN and GGSN, when realizing multicast service, reduced the change of multicast service to existing communication system.
Wherein, step 201,202,207,208 and 213 same as the prior art repeats no more here.
The above has carried out further detailed description to purpose of the present invention, technical scheme and beneficial effect; institute is understood that; the above is not in order to restriction the present invention; within the spirit and principles in the present invention all; any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1, a kind of implementation method of multicast service is characterized in that, this method may further comprise the steps:
A, user equipment (UE) and server S erver set up the point-to-point IP tunnel, and begin request by the point-to-point IP tunnel of having set up to Server transmission multicast service;
After B, Server receive that multicast service begins request, begin message by UE and the radio network controller (RNC) transmission multicast of having set up under described UE of the point-to-point IP tunnel between Server; RNC begins message according to the multicast received, the channel of eating dishes without rice or wine of UE is reconfigured on the multicast channel, and returns multicast by the point-to-point IP tunnel of having set up to Server and begin to confirm;
C, when finishing receiving multicast business, UE sends the multicast service ending request by the point-to-point IP tunnel of having set up to Server;
After D, Server receive the multicast service ending request, send the multicast end by UE and the RNC under described UE of the point-to-point IP tunnel between Server that has set up; RNC is according to the multicast end received, the channel of eating dishes without rice or wine of UE is reconfigured on the unicast tunnel, and returns multicast by the point-to-point IP tunnel of having set up to Server and finish to confirm.
2, method according to claim 1 is characterized in that, further comprises before the step B: the IP address Server IP Addr that distributes RNC to use for Server.
3, method according to claim 1 is characterized in that, described multicast begins message, multicast begins affirmation, multicast end and multicast and finishes to confirm by the transmission of IP bag.
According to claim 2 or 3 described methods, it is characterized in that 4, the source IP address that described multicast begins to carry in the message is that Server IP Addr, purpose IP address are the IP address UE IP of UE;
The source IP address that described multicast carries in beginning to confirm is that UE IP, purpose IP address are Server IPAddr.
According to claim 2 or 3 described methods, it is characterized in that 5, the source IP address that carries in the described multicast end is that Server IP Addr, purpose IP address are the IP address UE IP of UE;
The source IP address that described multicast carries in finishing to confirm is that UE IP, purpose IP address are Server IPAddr.
6, method according to claim 1 is characterized in that, described multicast begins message and carries multicast service identifier;
The described RNC of step B begins message according to the multicast of receiving and the channel of eating dishes without rice or wine of UE is reconfigured on the multicast channel is specially: RNC with the channel of eating dishes without rice or wine of UE be reconfigured to transmit described multicast service identifier on the multicast channel of corresponding multicast service, described UE is the UE that transport multicast begins the general packet wireless service tunnel protocol GTP passage correspondence of message.
7, method according to claim 1 is characterized in that, the described UE of step D is the UE of the GTP passage correspondence of transport multicast end.
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| CNB2006100570960A CN100512308C (en) | 2006-03-17 | 2006-03-17 | Method for realizing multcast service |
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| CN101426207B (en) * | 2007-10-29 | 2011-11-16 | 中国移动通信集团公司 | Uni-frequency network controlling method and uni-frequency network controlling entity |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |