CN101599842B - Method, network and gateway for transmitting broadcast programs - Google Patents
Method, network and gateway for transmitting broadcast programs Download PDFInfo
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- CN101599842B CN101599842B CN2008101143280A CN200810114328A CN101599842B CN 101599842 B CN101599842 B CN 101599842B CN 2008101143280 A CN2008101143280 A CN 2008101143280A CN 200810114328 A CN200810114328 A CN 200810114328A CN 101599842 B CN101599842 B CN 101599842B
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Abstract
The invention provides a method for transmitting broadcast programs, which is used for a broadband wireless multimedia network and comprises the following steps: transmitting broadcast program data to a broadcast and access network gateway from a broadcast content server in an IP unicast mode; and transmitting the broadcast program data to a user terminal from the broadcast and access network gateway in a multicast mode. In addition, the invention also provides a broadcast and access network gateway of the broadband wireless multimedia network, which transmits data by adopting the combination mode of the IP unicast mode and the special network multicast mode, thereby lowering the networking cost. Meanwhile, the broadcast program data and a program control command can be transmitted through different channels, and thus the invention avoids the condition that additional program information is transmitted by complex frame structures and protocols needed by the original broadcast program downlink channel; and the design of the system is simplified.
Description
Technical field
The present invention relates to the broadband radio multi-media network technology, particularly relate to a kind of broadcast program sending method, network and gateway.
Background technology
Broadband radio multi-media (Broadband Wireless Multimedia, BWM) system in bottom layer realization wireless integration of three networks technology, have the network architecture and eat dishes without rice or wine on some key technologies.Wherein wireless three nets are meant: telecommunications network, broadcasting and television network, and the Internet.
Traditional " three nets " emerging system, thereby mainly all be to carry out multiple services transmission by application layer to realize merging, and the BWM system has realized the fusion of broadcasting service and data service on physical layer by " superframe " structural design, thereby can realize more efficiently that the height on physical layer, network layer and the application layer merges.Also there not be at present specially broadcast program delivery system at the BWM system of this bottom height fusion.
Issue of existing mobile broadcast television and method of reseptance, the mobile TV-system of DVB-H standard for example, it is at single radio and television Publish System Design, and its major defect is:
1) based on the broadcast program issue architectural framework of single radio network, on the broadcasting unidirectional channel, defined complicated frame structure, thereby also made the reception complex structure so that it can transmit other supplementarys except that stream medium data.
2) because traditional network architecture based on the transmission system of sealing, all is the transmission over networks in special use from the program source to the broadcast base station, what for example use among the DVB-H is to carry out multicast on the IP network of special use.This makes overall system construction cost height.
In the process that realizes technical solution of the present invention,, then there are following two subject matters if find these existing systems are directly applied to the BWM system:
1) characteristic that the BWM network bottom layer merges can not be made full use of, thereby the ability of data communication channel among the BWM can't be brought into play.
2) the BWM system will to make full use of Internet and come Data transmission in order to reduce cost.And be not support the IP multicast on Internet at present, thereby networking fast.
Summary of the invention
The purpose of the embodiment of the invention provides a kind of broadcast program sending method, network and gateway, and having overcome in traditional delivery system because all adopt multicasts can not be in the problem that realizes transfer of data on the internet, thereby supports the quick networking of BWM.
To achieve these goals, according to an aspect of the present invention, provide a kind of broadcast program sending method, be used for the broadband radio multi-media network, having comprised:
Broadcast program data is transmitted arrival broadcasting and Access Network gateway from broadcast content server through the IP unicast mode;
Described broadcast program data is transmitted the arrival user terminal from described broadcasting and Access Network gateway through the multicast mode.
Preferably, before described broadcast program data is transmitted the step that arrives described broadcasting and Access Network gateway from broadcast content server through IP unicast, also comprise:
The communication port with up-downgoing function by described broadband radio multi-media network transmits the program control command.
Preferably, described IP unicast mode is transmitted and is specially the Internet unicast transmission or dedicated transmissions network unicast transmission.
Preferably, described multicast mode is transmitted the descending wireless base station that only can carry out the downlink broadcast transfer of data that is specially by described broadband radio multi-media network and is carried out multicast transmission.
Preferably, described program control command is transmitted in the described communication port of being made up of described broadcast content server, resource Control Server, described broadcasting and Access Network gateway, data communication base station and described user terminal with up-downgoing function.
Preferably, the described communication port with up-downgoing function by the broadband radio multi-media network step that transmits the program control command specifically comprises:
Sending broadcast program by described broadcast content server to the resource Control Server sends a request message;
Send new broadcast program describing message by described resource Control Server to described broadcasting and Access Network gateway;
At described broadcasting and Access Network gateway and only can carry out carrying out scheduling of resource between the descending wireless base station of downlink broadcast transfer of data;
Return described broadcast program by described broadcasting and Access Network gateway to described resource Control Server and send preparation message;
Send broadcast program by described resource Control Server to described broadcast content server and send information;
Send the electronic program list lastest imformation by described broadcasting and Access Network gateway to described user terminal;
Described user terminal carries out program ordering.
According to another aspect of the present invention, provide a kind of broadband radio multi-media network, comprised data transmission channel, described data transmission channel specifically comprises:
The IP unicast transmission channel is used for broadcast program data is transmitted arrival broadcasting and Access Network gateway from broadcast content server through the IP unicast mode;
The multicast transmission passage is used for described broadcast program data is transmitted the arrival user terminal from described gateway through the multicast mode.
Preferably, described network also comprises:
Communication port with up-downgoing function is used for transmitting the program control command.
Preferably, described communication port with up-downgoing function comprises: described broadcast content server, resource Control Server, described broadcasting and Access Network gateway, data communication base station and described user terminal.
According to another aspect of the present invention, provide a kind of broadcasting and Access Network gateway, be used for the broadband radio multi-media network, having comprised:
The IP unicast transmission unit is used for receiving the broadcast program data of transmitting through the IP unicast mode from broadcast content server;
The multicast transmission unit is used for described broadcast program data is transferred to user terminal through the multicast mode.
There is following technique effect at least in the embodiment of the invention:
1) the program dissemination method that defines in the embodiment of the invention utilizes the data communication network of BWM system to transmit the control signaling of program issue, and will no longer need complicated frame structure and agreement to transmit extra programme information on the broadcast program down channel.Thereby make the design of system be simplified.
2) embodiment of the invention is divided into two sections with the data transmission channel of broadcast program: broadcasting from the program source to BWM and Access Network gateway adopt the IP unicast transmission, in BWM broadcasting and the inner multicast transmission that adopts of Access Network.So just overcome the problem that can not on Internet, realize transfer of data in traditional delivery system because all adopt multicast, thereby supported the quick networking of BWM.
3) issue structure based on the broadcast data of IP unicast and multicast combination.The transfer of data and the efficiency of management have been improved;
4) reception of the transmission of broadcast program, user terminal has all made full use of the data communication channel that bottom merges and has come control channel, and the system that makes realizes succinct more, efficient, can reduce cost;
5) system configuration is flexible, is easy to realize based on multiple charge mode, for example based on the charge of duration, based on the billing mechanism of specific program content etc.
6) can make full use of open Internet or other existing IP-based network are carried out program transmission, reduce system's construction cost.
Description of drawings
The structure chart of the broadband radio multi-media network that carries out broadcast program issue and receive that Fig. 1 provides for the embodiment of the invention;
The basic agreement flow chart that carries out the broadcast program issue and receive that Fig. 2 provides for the embodiment of the invention;
The broadcast program data access diagram that Fig. 3 provides for the embodiment of the invention.
Embodiment
For the purpose, technical scheme and the advantage that make the embodiment of the invention is clearer, specific embodiment is described in detail below in conjunction with accompanying drawing.
The embodiment of the invention makes full use of the characteristics of BWM network bottom layer seamless fusion broadcast program of energy and data service, defined the method that access, issue and the user of adaptive with it upper strata broadcast program watch, and the related service model, comprise signaling process, functional entity etc.
The whole network architecture of BWM is based upon on the IP network of flattening, the issue of broadcast program relates to the unified scheduling of the resource of the overall situation (perhaps bigger broadcast area), the structure chart of the broadband radio multi-media network that carries out broadcast program issue and receive that Fig. 1 provides for the embodiment of the invention, among Fig. 1 arrow and on digital watch understand that broadcast program sends and set up the information interaction between each functional entity in the process that thick arrow then is the transmission channel of broadcast data.Utilize data communication channel to control the mutual of signaling between each functional entity, realize management the broadcast program data transmission.
The broadcast data transmission passage is made up of " IP unicast " and " IP multicast " two passages: sending the source from program is the IP unicast passage to " broadcasting and IAD " path (BASN-GW), can utilize Internet or other privately owned transmission network (company's internal network of for example not opening to the outside world or intercompany dedicated network) to transmit so very easily; On spot broadcasting and Access Network, then use the higher multicast of efficiency of transmission, contain from broadcasting and IAD send to broadcast base station, again to subscriber equipment this section.
With reference to figure 1, the functional entity that the BWM network architecture relates in the embodiment of the invention is described as follows:
BCS: broadcast content server is the source of media of broadcast program.One or more RCS server is arranged in the BWM system.
RCS: resource Control Server.RCS is used to control the resource allocation of BWM system bottom wireless data frame, the duration of " broadcast program data " and " communication data (program control command) " in the specific radio data.RCS is according to the resource of system, and whether decision admits new broadcast program.
BBS: big base station, bear the wireless base station that broadcast program sends.Its function singleness does not possess user data uplink function, can carry out the descending transmission of large-scale broadcast program.
CBS: little base station, data communication base station.The up-downgoing data communication is supported in wireless base station in the similar traditional cellular wireless networks.
BASN-GW: broadcasting and Access Network gateway.BASN-GW is linked into the gateway of external network (for example Internet) as the user and exists, and in the issuing function of this broadcast program, will provide correlation functions such as program inventory, data forwarding.
MS: user terminal.The user is used to receive the terminal of broadcast program, possesses the support of IP agreement, BWM radio physical layer function.
The embodiment of broadcast program sending method of the present invention is as follows:
The communication port with up-downgoing function by described broadband radio multi-media network transmits the program control command;
Broadcast program data is transmitted through the IP unicast mode from broadcast content server and is arrived broadcasting and Access Network gateway;
Described broadcast program data is transmitted the arrival user terminal from described gateway through the multicast mode.
A kind of reference flowchart of the inventive method embodiment (signaling and basic agreement flow process) is as follows:
The lines that indicate number designation among Fig. 1 have provided the basic signaling process of the foundation of broadcast program transmission.When having new broadcast program to send in the system, follow the transmission channel that this flow process is set up broadcast program, detailed process is with reference to figure 2.
With reference to figure 1, Fig. 2, the title of each message is as follows with relevant operating process:
Wherein.BCRS: " broadcast program send request ", comprise the detailed description of program, as, bandwidth demand, charging policy, duration etc. also can comprise the expansion contents such as msu message of program, and extend information can be defined by system operator.
Wherein.NBP: " new broadcast program is described ", comprise the basic description (programm name, duration, bandwidth requirement, charging relevant information etc.) of program in the NBP message, and the instruction of the resource allocation of bottom wireless data frame.Notice that if in the BWM system a plurality of BASN-GW are arranged, NBP can be transferred to all BASN-GW, each BASN-GW handling process and single identical.
In addition, optionally, resource Control Server RCS also can send BCR, BCR to broadcasting and Access Network gateway: " the refusal program sends request ".
Wherein.BCRS: " broadcast program sends and prepares ".After BASN-GW receives NBP, will be the relevant local resource of this program distribution, if the resource allocation operations success then sends BCRS message to RSC, indication " transmission is ready to complete " in the message.If the local resource allocation failure will be indicated " distributing failure " among the message BCRS, program can not continue to send, and BCR message will be sent to BCS.The BASN-GW distributed system resources comprises: receive this program IP address, local network bandwidth, carry out bottom Radio Resource relevant configuration, this program multicast address, local electronic program list etc.
Wherein.BPS: " broadcast program transmission ".RCS etc. receive after the feedback message of all BASN-GW, generate a BPS message and send to BCS.The IP address or the address list (when a plurality of BASN-GW) that comprise the BASN-GW of program receiving in the BPS message.
BCS receives after the BPS message, just sends broadcast program data to BASN-GW by IP network.The BASN-GW gateway sends to BBS by multicast after receiving data on local network, BBS carries out wireless transmission again.
Wherein.EPGU: " electronic program list renewal " comprises program description and reception information (multicast address) etc.After BASN-GW receives NBP, in case it has upgraded local electronic program list, it will send EPGU message to the user by CBS.
Step 17, described user terminal carries out program ordering MSSBC.
Wherein, MSSBC: " portable terminal program ordering ".If the user wants to watch certain program, then use the MSSBC operation, user terminal is joined corresponding multicast group, thereby upper layer software (applications) can normally receive this broadcast program data.
Corresponding above method, a kind of embodiment of broadband radio multi-media network also is provided, comprise data transmission channel, described data transmission channel specifically comprises: the IP unicast transmission channel is used for broadcast program data is transmitted arrival broadcasting and Access Network gateway from broadcast content server through the IP unicast mode; The multicast transmission passage is used for described broadcast program data is transmitted the arrival user terminal from described gateway through the multicast mode.
Also comprise: have the communication port of up-downgoing function, be used for transmitting the program control command.
Described communication port with up-downgoing function comprises: described broadcast content server, resource Control Server, described broadcasting and Access Network gateway, data communication base station and described user terminal.
Corresponding above method also provides the embodiment of a kind of broadcasting and Access Network gateway, is used for the broadband radio multi-media network, and comprising: the IP unicast transmission unit is used for the broadcast program data of transmitting through the IP unicast mode from the broadcast content server reception; The multicast transmission unit is used for described broadcast program data is transferred to user terminal through the multicast mode.
Fig. 3 has shown described data transmission channel, has provided the protocol infrastructure reference model on each entity, and wherein filling part transmits the host-host protocol of described broadcast program data for supporting described data transmission channel.
As from the foregoing, adopt the embodiment of the invention can bring following advantage:
1) the program dissemination method that defines in the embodiment of the invention, utilize the data communication network of BWM system to transmit the control signaling that program is issued, and will no longer need complicated frame structure and agreement to transmit extra programme information on the broadcast program down channel, thereby make the design of system be simplified.
2) embodiment of the invention is divided into two sections with the data transmission channel of broadcast program: broadcasting from the program source to BWM and Access Network gateway adopt the IP unicast transmission, in BWM broadcasting and the inner multicast transmission that adopts of Access Network.So just overcome the problem that can not on Internet, realize transfer of data in traditional delivery system because all adopt multicast, thereby supported the quick networking of BWM.
3) issue structure based on the broadcast data of IP unicast and multicast combination.The transfer of data and the efficiency of management have been improved;
4) reception of the transmission of broadcast program, user terminal has all made full use of the data communication channel that bottom merges and has come control channel, and the system that makes realizes succinct more, efficient, can reduce cost;
5) system configuration is flexible, is easy to realize based on multiple charge mode, for example based on the charge of duration, based on the billing mechanism of specific program content etc.;
6) can make full use of open Internet or other existing IP-based network are carried out program transmission, reduce system's construction cost.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. a broadcast program sending method is used for the broadband radio multi-media network, it is characterized in that, comprising:
Broadcast program data is transmitted arrival broadcasting and Access Network gateway from broadcast content server through the IP unicast mode;
Described broadcast program data is transmitted the arrival user terminal from described broadcasting and Access Network gateway through the multicast mode;
Before described broadcast program data was transmitted the step that arrives described broadcasting and Access Network gateway from broadcast content server through the IP unicast mode, also comprise: the communication port with up-downgoing function by described broadband radio multi-media network transmitted the program control command; Described communication port with up-downgoing function comprises: described broadcast content server, resource Control Server, described broadcasting and Access Network gateway, data communication base station and described user terminal.
2. method according to claim 1 is characterized in that, described IP unicast mode is transmitted and is specially the Internet unicast transmission or dedicated transmissions network unicast transmission.
3. method according to claim 1 is characterized in that, described multicast mode is transmitted the descending wireless base station that only can carry out the downlink broadcast transfer of data that is specially by described broadband radio multi-media network and carried out multicast transmission.
4. method according to claim 1 is characterized in that, the step that the described communication port with up-downgoing function by the broadband radio multi-media network transmits the program control command specifically comprises:
Sending broadcast program by described broadcast content server to the resource Control Server sends a request message;
Send new broadcast program describing message by described resource Control Server to described broadcasting and Access Network gateway;
At described broadcasting and Access Network gateway and only can carry out carrying out scheduling of resource between the descending wireless base station of downlink broadcast transfer of data;
Return described broadcast program by described broadcasting and Access Network gateway to described resource Control Server and send preparation message;
Send broadcast program by described resource Control Server to described broadcast content server and send information;
And, after described broadcasting and Access Network gateway are received new broadcast program description information, after having upgraded local electronic program list, send the electronic program list lastest imformation to described user terminal by the data communication base station;
Described user terminal carries out program ordering.
5. a broadband radio multi-media network is characterized in that, comprises data transmission channel, and described data transmission channel specifically comprises:
The IP unicast transmission channel is used for broadcast program data is transmitted arrival broadcasting and Access Network gateway from broadcast content server through the IP unicast mode;
The multicast transmission passage is used for described broadcast program data is transmitted the arrival user terminal from described gateway through the multicast mode;
Described broadband radio multi-media network also comprises:
Communication port with up-downgoing function is used for transmitting the program control command;
Described communication port with up-downgoing function comprises: described broadcast content server, resource Control Server, described broadcasting and Access Network gateway, data communication base station and described user terminal.
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| CN1859267A (en) * | 2006-02-09 | 2006-11-08 | 华为技术有限公司 | Method and system for realizing multimedia broadcast serice in small zone |
| CN101179586A (en) * | 2006-11-08 | 2008-05-14 | 胡国荣 | TS stream based media access control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1859267A (en) * | 2006-02-09 | 2006-11-08 | 华为技术有限公司 | Method and system for realizing multimedia broadcast serice in small zone |
| CN101179586A (en) * | 2006-11-08 | 2008-05-14 | 胡国荣 | TS stream based media access control method |
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