CN100442863C - Multiple media broadcasting method in mobile communication system - Google Patents
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- CN100442863C CN100442863C CNB2006100065285A CN200610006528A CN100442863C CN 100442863 C CN100442863 C CN 100442863C CN B2006100065285 A CNB2006100065285 A CN B2006100065285A CN 200610006528 A CN200610006528 A CN 200610006528A CN 100442863 C CN100442863 C CN 100442863C
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Abstract
The present invention discloses a multimedia broadcasting method in a mobile communication system, which relates to mobile communication technology, and can save air interface bandwidth occupied by multimedia broadcasting and utilize network resources in a highly efficient way when multimedia stream broadcasting is carried out in a cell of the mobile communication system. In the present invention, firstly, special access point information is customized in an HLR for a channel of the multimedia stream broadcasting, and thus, in the process of initiating a call, a UE informs an SGSN and an RNC that the call establishes a customized wireless access load for a broadcasting channel so as to establish commonly used down channel codes used for loading a wireless link of stream media broadcasting; when a NodeB carries out the multimedia broadcasting, only minimum bandwidth is occupied.
Description
Technical field
The present invention relates to mobile communication technology, particularly the media broadcasting method in the mobile communication system.
Background technology
Along with advancing by leaps and bounds of the communication technology, people are also more and more higher for the expectation and the requirement of personal communication, so mobile operator needs special concern user interface, quality of service etc. directly to influence the aspect that the user uses the mobile service impression.In today of personal communication fast development, the market demand has greatly promoted the progress of mobile communication technology.3-G (Generation Three mobile communication system) (3rd Generation, be called for short " 3G ") particularly, each standards system all has the enhancement techniques that improves systematic function separately.Characteristics such as the high bandwidth of 3G, multi-service, high-quality are attracting mobile consumption market greatly, even but if some problems that exist in the 3G technology do not solve restricted market expansion to a certain extent, and the development of operation affairs is moved in influence.
The development of the Internet (Internet) medium of etc.ing simultaneously, make stream media technology application more and more widely, broadcast from network, film is played to remote teaching and online news website etc. has all been used stream media technology.Current online transmission of video, audio frequency mainly contain download (Download) and stream transmission (Streaming) dual mode.Stream transmission is to transmit the video/audio signal continuously, when Streaming Media remainder when client computer is play continues on the backstage to download.Stream transmission has progressive streaming transmission (ProgressiveStreaming) and real-time streaming transmission (Realtime Streaming) dual mode.The real-time streaming transmission is real-time transmission, is particularly suitable for live event, and the real-time streaming transmission must coupling connect bandwidth, this means that picture quality can reduce variation because of network speed, to reduce the demand to transmission bandwidth.
Making rapid progress of wireless technology also makes people that mobile phone terminal has been proposed many new demands, as directly on mobile phone, seeing streaming media service such as TV, film, according to wireless protocols is if want that also there is very big gap in the Web TV function that realizes popular rate at present, reason is that the realization of convection current media broadcast in the present wireless protocols is also perfect not to the utmost.Therefore how by improving the existing wireless communications technology, at global system for mobile communications (Global System of Mobile Communication, be called for short " GSM ") or Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short " WCDMA ") mobile communication system in solve Streaming Media effectively transmission be current industry urgent problem.
No matter be that GSM or WCDMA do not have at present really to realize that the broadcast channel of big flow comes the broadcasting of bearing multimedia stream, existing technology all is to adopt the mode of dedicated channel to carry broadcasting stream.But the fact is the Streaming Media of broadcasting concerning the mobile phone of each reception all be the mode of the same employing dedicated channel not only can not share when carrying this business and also application cost very high, because the network equipment need distribute exclusive Radio Resource and transfer resource, the rate of marrying the user like this will be very expensive.If there is a kind of broadcast channel of big flow to support this problem of words of this application just to be readily solved.
The WCDMA mobile communication system is made up of core net, universal mobile telecommunications system grounding wireless access network and subscriber equipment (User Equipment is called for short " UE "), adopts the WCDMA wireless access technology between Access Network and the UE.The WCDMA network time is followed following principle in design: wireless access network separates with the core net function as far as possible, promptly the management function of Radio Resource is concentrated on wireless access network and finishes, and carry out in core net with professional and application related functions.The basic characteristics of the WCDMA network architecture are core net progressively evolution and the transition of core net from GSM.Wireless access network then is to change revolutionaryly, and it will be different from the wireless access network of GSM fully, and the business of complete compatible GSM then aspect professional has demonstrated fully professional continuity.
In the later network architecture of the R4 of WCDMA, core net no longer is confined to Circuit-switched mode, can select the mode of packet switching, such as with asynchronous transfer mode (Asynchronous TransferMode, abbreviation " ATM "), Internet protocol (Internet Protocol is called for short " IP ") is as bearing technology.Packet switching has not only improved network transmission speed, has enriched the Network kind, and can make things convenient for network management, the network configuration design.Pass through radio network controller (Radio Network Controller between core net and the Access Network, be called for short " RNC ") and the Iu interface communication of switching center, between RNC and the switching center control channel, RNC accepts the signaling control of switching center's server, be data channel between RNC and the media gateway simultaneously, the data of RNC converge and shunt by gateway.In the wireless access side, UE passes through cell base station node (NodeB) wireless access, and is controlled by RNC.
Travelling carriage is the equipment of user's practicality in the GSM/WCDMA mobile radio communication, and the type of travelling carriage mainly contains Vehicle mounted station and hand-held station (mobile phone).Along with the digital mobile phone of GSM standard further to small-sized, light and handy and multifunctional direction development.MS enters the conventional wireless communication function and relevant treatment function of gsm system except that providing by wave point, also must provide and the user between interface.Such as the needed microphone of dial-up, loud speaker, display screen and keyboard are provided; Also need when carrying out data communication to provide and some other terminal equipment between interface, as and personal computer and facsimile machine between interface.The another one pith of MS is a SIM card, gsm system is discerned the user by SIM card, it is not to be bound by a user regularly that the application of SIM card makes travelling carriage, for Personal Communications Services (PersonalCommunication Service is called for short " PCS ") is had laid a good foundation.
Base station node B is to concern the closest and the most direct element with wireless aspect in the GSM/WCDMA system.It sends and receives information by wireless mode, and carries out the management of Radio Resource.NodeB accepts the control of RNC, realizes between the mobile subscriber or communicating to connect between mobile subscriber and the local user, transfer system information and user profile etc.NodeB links to each other with travelling carriage by wave point, is responsible for wireless transmission.Opposite side RNC links to each other with core net switching center, is responsible for control and management.A RNC can control a plurality of NodeB, adopts the connected mode of far-end control to link to each other, and it connects link generally is wired.
The functional entity of WCDMA core network packet-domain comprises: GPRS (GeneralPacket Radio Service, abbreviation " GPRS "), serving GPRS support node (Services GPRS SupportNode is called for short " SGSN ") provides the node of Packet Service for portable terminal.Bear mobile management, fail safe and the access control function of packet domain, between travelling carriage and GGSN, finish the transmission and the reception of mobile packet data; The gateway that GGSN (Gateway GPRS Support Node is called for short " GGSN ") packet domain links to each other with the external packet data net.Have network access control functions, Route Selection and forwarding capability, user data management function, and cooperate SGSN to realize the mobile management function; Attaching position register (Home Location Register is called for short " HLR ") storage UMTS/GPRS user data and routing iinformation.Have grouping user data management, customer position information management and subscription authentication function.
HLR is the central database of mobile communication system, is storing mobile subscriber's the related data of all registrations of this HLR control.A HLR can control several mobile switching areas down to whole mobile network, and all mobile subscribers' important static data all is stored among the HLR, comprising data such as identification number of mobile subscriber, access function, class of subscriber and supplementary service functions.Also storage and provide the actual relevant dynamic data of roaming place MSC for switching center among the HLR about the mobile subscriber.Like this, any incoming call all can be delivered to the called subscriber by corresponding route.
The main interface of WCDMA comprises: Iups, and the interface between SGSN and the RNC adopts the transmission based on ATM between WCDMA wireless subsystem and the core network packet-domain; Gn, the interface in the same public network between two GSN is supported the transmission of user data and signaling, is supported mobile management, in IP-based backbone network, this interface adopts the mode of carrying GTP on the TCP/UDP agreement to communicate; Gi, the reference point between GPRS and the external packet data need be carried out operations such as protocol encapsulation/decapsulation, address transition, the authentication the when user inserts and authentication on the Gi interface; Gr, the interface between SGSN and the HLR provides the interface that inserts HLR and obtain user management data and positional information for SGSN; Gc, the interface between GGSN and HLR is mainly used in network side when initiatively initiating service request to mobile phone, by GGSN to the current SGSN address information of HLR request user.
Because in mobile communication system, base-station node NodeB will receive a plurality of users' access, offers user's Radio Link separately.On the ordinary meaning, each access of each user all needs network side system to carry out access process one time, and this process relates to a plurality of functional modules, not only expends system resource, and needs certain processing delay.And different UEs needs distributing independent channel separately, avoids the conflict of radio communication.Therefore in radio open communication two kinds of channels are arranged usually, a kind of is dedicated channel, and being exactly all has special independent channel between each UE and the NodeB; Another kind is a shared channel, and a plurality of exactly UE communicate by letter on a channel with NodeB, but content separately is independently, just the Content of Communication of each UE is bundled on same the shared channel and transmits, and the Content of Communication of different UEs is distinguished by specific mechanism.
At present, the realization of the broadcasting of media stream in radio open communication mainly contains dual mode: dedicated channel and shared channel.
Dedicated channel realizes that the multimedia broadcasting scheme is to set up the wireless channel of a special use between terminal UE and base station, the transmission link of setting up a special use between base station node B and base station controller RNC is realized the foundation of radio bearer, and this carrying of core net is " radio bearer " relatively.Core net is got off is that broadcasted content and wireless access network are divided into designated lane to them and have realized, all sets up separately dedicated channel for the UE of each receiving stream media broadcasting in other words and transmits this implementation of Streaming Media and ignore the consistency of carrying content fully and wasted a large amount of transmission bandwidths.
The scheme that realizes Web TV broadcasting with DSCH Downlink Shared Channel is to set up a shared wireless channel between all UE and base station, and the transmission link of setting up a special use between base station node B and base station controller RNC is realized the foundation of radio bearer.The UE that is equivalent to each receiving stream media broadcasting shares same down channel, but NodeB transmits identical stream medium data still will for each UE.So-called shared channel is to say that this channel can take partly or entirely each UE, but the content of terminal transmission can not be shared.That is to say that though only used a shared channel, being connected still independently of each UE and network side, media data still will be repeated transmission.
In actual applications, there is following problem in such scheme: at present the radio access layer wireless channel that is used for carrying the upper strata multi-media broadcasting service has only dedicated channel or shared channel, if come the words of bearing multimedia broadcast to take to eat dishes without rice or wine transfer resource in a large number and the data that transmitted in these resources that take all are the same with dedicated channel, do not reach the purpose of shared bandwidth; If the words that transmit multimedia broadcasting stream with shared channel still will be duplicated data separately concerning each terminal, such result does not have too big difference with the mode that dedicated channel realizes in fact, does not fundamentally solve the waste of network bandwidth resources.
Cause the main cause of this situation to be, realize broadcasting with dedicated channel or shared channel carrying media flow data, the network bandwidth is wasted in the transmission that repeats of Streaming Media.
Summary of the invention
In view of this, main purpose of the present invention is to provide media broadcasting method in a kind of mobile communication system, make when carrying out media stream broadcasting in the mobile communication system cell, can save the shared bandwidth of air-interface of multimedia broadcasting, efficiently utilize Internet resources.
For achieving the above object, the invention provides media broadcasting method in a kind of mobile communication system, comprise following steps,
The terminal free online multimedium broadcasting service that makes a call;
Base-station node is set up the multimedia broadcasting link, for all described terminals that receive broadcasting are provided with identical down channel sign indicating number.
Wherein, also comprise following steps,
The special-purpose access point numeral of registration multimedia broadcasting in attaching position register is provided with the special-purpose access point numeral of this multimedia broadcasting in the packet-switched domain of described terminal is provided with;
Customize the authorization interface between described attaching position register and the service gateway support node, have the request of the special-purpose access point numeral of described multimedia broadcasting when described attaching position register authentication after, notify described service gateway support node to carry out the special disposal of multimedia broadcasting call request;
Customize interface between described service gateway support node and the radio network controller, when handling the multimedia broadcasting call request, described service gateway support node notifies described radio network controller to set up multimedia broadcasting private radio access bearer.
In this external described method, the flow process of handling the multimedia broadcasting calling comprises following steps,
When described end point playing multimedia broadcasting service, the special-purpose access point numeral of described multimedia broadcasting is reported described service gateway support node, report authentication request to give described attaching position register by described service gateway support node;
Described attaching position register notifies described service gateway support node to carry out the special disposal of multimedia broadcasting call request after by authentication;
Described service gateway support node notifies described radio network controller to set up described multimedia broadcasting private radio access bearer;
Described base-station node is set up the multimedia broadcasting link, for all described terminals that receive broadcasting are provided with identical down channel sign indicating number.
In this external described method, the flow process that described processing multimedia broadcasting is called out also comprises following steps,
When calling out once more, described base-station node judges whether the pairing multimedia broadcasting link of current calling is set up, if, then directly use the down channel of this multimedia broadcasting link, the terminal that makes a call by notice after the authentication is from this down channel sign indicating number receiving multimedia broadcast.
In this external described method, the flow process that described processing multimedia broadcasting is called out also comprises following steps,
When the terminal of accepting multi-media broadcasting service when current area switches to Target cell, if this Target cell has been set up corresponding multimedia broadcasting link, then directly use the down channel of this multimedia broadcasting link, the terminal after notice is switched is from this down channel sign indicating number receiving multimedia broadcast;
Otherwise, set up new multimedia broadcasting link at described Target cell.
In this external described method, also comprise following steps,
Described terminal is in the free online multimedium business, and other dedicated channels of call setup are used to carry the outside ventures of affiliated multi-media broadcasting service.
In this external described method, described multimedia broadcasting link forbidding up channel is forbidden being called out.
In this external described method, described multimedia broadcasting link uses constant power, forbidding soft handover.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, at first the channel for media stream broadcasting customizes special access-in point information at HLR, UE informs that in the process that makes a call SGSN and RNC should call out the RAB of setting up customization into broadcast channel like this, use identical down channel sign indicating number when setting up the Radio Link that is used for stream media bearing broadcasting for UE, NodeB carries out multi-media broadcast sowing time, only need take minimum bandwidth.
Difference on this technical scheme, brought comparatively significantly beneficial effect, promptly the Radio Link by customization is used for broadcasting multimedia data, all UE all obtain multi-medium data from identical down channel, from the base station to the terminal, realize the broadcast communication of minimum bandwidth, save the required Internet resources that take of multimedia broadcasting greatly, improve media communication efficient and transmission rate relatively, make that broadcast medium business such as Web TV are launched, save mobile operation cost, greatly promote mobile media market.
Description of drawings
Fig. 1 is a media broadcasting method flow chart in according to the embodiment of the present invention the mobile communication system.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
In view of existing major defect of inventing is to repeat to transmit the multi-medium data of broadcasting, make Internet resources inevitably be wasted, therefore the present invention is conceived to the shortcoming that broadcast bandwidth shares, avoids multi-medium data to repeat to transmit, the UE that receives media stream is adopted identical down channel, NodeB only need transmit a multi-medium data like this, can realize the broadcasting truly to a plurality of UE.Therefore broadcast channel is different from existing channel, needs customization, comprises log-on message, flow process etc. continues.The present invention is by access point numeral (the Access Point Number among the customization HLR, abbreviation " APN "), RAB (Radio Access Bearer, be called for short " RAB ") and specific power control, handover configurations etc., realize the common multimedia streaming data that receives a radio multimedium broadcast downstream channel of a plurality of UE.
First execution mode of the present invention is an example with the framework of WCDMA R4, realizes the media stream broadcasting of sub-district.Relate to following several network functional entity in the multimedia broadcasting realization flow of whole wireless network: NodeB, RNC, SGSN, HLR, wherein the HLR judgement, SGSN and the RNC that relate to the setting of APN information and broadcast channel relates to the enforcement that handshaking procedure that UE calls out and RAB link establishment process, NodeB then relate to the broadcast channel of eating dishes without rice or wine.Fig. 1 shows the flow chart of the media stream broadcasting method of first execution mode of the present invention.
In the step 101, at first one of registration is broadcasted relevant (or a plurality of) APN (being called APN_TV) with Streaming Media in HLR, other attribute of this APN_TV is the same with common APN, difference is packet switching (the Packet Switch with terminal, abbreviation " PS ") territory is provided with identical APN_TV in being provided with, therefore be different from common APN, be called Streaming Media broadcasting (Web TV) APN, i.e. APN_TV.As seen, APN_TV needs customization, and is all identical for its APN_TV of all UE of receiving media streaming, can guarantee that so just each UE that receives broadcasting all calls out same APN_TV, and the core exchange functional unit also is convenient to distinguish APN_TV simultaneously.
In step 102, the authorization interface between customization HLR and the SGSN because broadcast ﹠ call are different with the ordinary call processing method, therefore need be notified the network element that continues by different interfaces in calling authorization then.The authorization interface of customization is different with the interface of present agreement regulation, when HLR receives authentication request from SGSN, if have the authentication request of APN_TV, then will notify this request of SGSN is the request of broadcasting Streaming Media, so that SGSN carries out the special disposal of broadcast ﹠ call request.As can be seen, the authentication of customization APN_TV and SGSN notice all is in order to realize the special processing to broadcast ﹠ call among the HLR, broadcast channel is different from conventional channel after all, need make all UE all accept a descending media stream data simultaneously, have the problem of aspects such as some channel interaction process, shared mechanism, power control, switching, the present invention has all provided solution.
In step 103, customization is exclusively used in the SGSN of Media Stream broadcasting and the relevant interface of the RAB assignment request between the RNC, at present the interface of agreement regulation and inapplicable.This be because, for the broadcast ﹠ call request, RNC needs special processing, so RNC and SGSN need appoint that RAB assignment request in what situations is the foundation of Streaming Media broadcast bearer, for Media Stream broadcasting RAB (being called RAB_TV), the process of foundation is different from common RAB.
In step 104, when mobile phone is initiated on-demand media stream business, must carry out packet data protocol (Packet Data Protocol earlier, be called for short " PDP ") the context activation operation, at this moment mobile phone can bring SGSN APN_TV, SGSN will send out authentication request to HLR after receiving this request (PDP activates request), SGSN receives that will issue RAB to RNC after the broadcasting Streaming Media request of this customization activates request (RAB_TV), RNC sets up special Radio Link with regard to needs according to this RAB_TV type, this special Radio Link allows NodeB that UE is provided with the same down channel sign indicating number, and a plurality of UE that are used for broadcast media stream exactly receive broadcast data from a down channel simultaneously.Therefore receiving media streaming simultaneously, and for NodeB, only need to send a multi-medium data, reach the maximum saving network bandwidth.
Provide the UE back network element that makes a call below and handle detailed process with the multimedia broadcasting link establishment:
When UE free online multimedium broadcasting service, with comprising APN_TV in its call request, report SGSN, SGSN continues that then call request is reported HLR and carries out authentication;
HLR finds that through authentication this APN_TV is the multimedia broadcasting request, the special disposal that notice SGSN carries out the multimedia broadcasting call request;
SGSN notice RNC sets up RAB_TV, and this RAB_TV meets the requirement of multi-media broadcasting service, allows different UEs to receive broadcast data from same down channel sign indicating number;
NodeB sets up the multimedia broadcasting link, for all UE that receive broadcasting are provided with identical down channel sign indicating number.
In second execution mode of the present invention, NodeB sets up the special Radio Link that is used for broadcast media stream when receiving RAB_TV, and this special Radio Link is different from Radio Link between general RNC and the NodeB.On the Radio Link, the down channel sign indicating number of two corresponding Radio Links of dedicated channel can not be the same, otherwise will clash between general RNC and the NodeB.And in order to finish the foundation of broadcast channel, RNC and NodeB need custom interface, and the down channel sign indicating number of the Radio Link of specified flow media broadcast carrying must be the same, and the purpose of doing like this is exactly that the content that will allow all terminals receive is all the same.That is to say, when between RNC and NodeB, setting up the RAB_TV Radio Link, just having defined NodeB can and must be identical at the down channel sign indicating number of all descending UE correspondences of this Radio Link, need not each UE is transmitted a broadcast data when so in fact NodeB is from this Radio Link broadcasting multimedia data, and only need on a down channel, to transmit, all UE can receive the broadcast medium flow data from this channel.
In the 3rd execution mode of the present invention, for can be in existing WCDMA protocol infrastructure compatible Media Stream broadcast mechanism of the present invention, realize method by identical down channel sign indicating number broadcast multimedia, also need to carry out other corresponding improvement.Wherein need do for the differentiation of broadcast ﹠ call and the improvement of special processing for RNC, NodeB, GSGN etc.Because the used down channel of broadcast media stream, not only makes each UE all can receive the media stream data of broadcasting, and can not cause conflict, because this is the mechanism of multicast with identical channel code for each UE.In addition, because the UE number that broadcasting is accepted is more than one and uncertain, so the broadcast downstream channel do not need to carry out power control, promptly closes power control.Aspect switching, broadcasting service is not carried out at concrete UE, does not therefore need to carry out soft handover.And for fear of conflict, UE can not be up with this dedicated channel, promptly can not do calledly, and UE can only accept multimedia broadcasting from this link, can not upload, and can cause conflict otherwise upload to same channel between the different UEs.At last, UE can also build a dedicated channel in addition and be used for other outside ventures, receives such as voice flow, uses the power of fixed size.
In the 4th execution mode of the present invention, further comprising the steps of for the flow process that each UE inserts, when first UE request multi-media broadcast sowing time, set up special multimedia broadcast channels by above-mentioned handshaking procedure, when afterwards the UE incoming call being arranged again, core network element judges whether this multimedia broadcasting link is set up, if then directly use this channel, notifies UE from this down channel sign indicating number receiving multimedia broadcast by after the authentication.
In the 5th execution mode of the present invention,, also be different from general service for the switching of multi-media broadcasting service.But when UE switches to Target cell from current area, if the channel of existing this multi-media broadcasting service of Target cell, then directly use this channel, promptly the UE that comes to switching is provided with the down channel sign indicating number of this channel, otherwise rebulid new channel, the process of foundation is as the execution mode that provides above.
Those of ordinary skill in the art are appreciated that, in other mobile communication system protocol frame, adopt method of the present invention, adopt corresponding net element to replace for each network function unit in the execution mode, can realize multimedia broadcasting, reach the goal of the invention of saving the network bandwidth, do not influence the spirit and scope of the invention.
Through just having disposed a broadcast channel of realizing with dedicated channel between terminal behind Iub (logic interfacing between NodeB and the RNC) interface that customizes above and the core net, this channel all is same channel concerning the follow-up mobile phone that carries out identical services, transmission link between NodeB and the RNC is also used same link, so just can save the transfer resource of terrestrial links greatly.
The Streaming Media broadcasting of doing according to standard agreement needs to consume a large amount of ground resources (transmission bandwidth), and adopt the solution of the present invention can save above-mentioned resource greatly, watch TV to need the bandwidth (speed in tentation data source is 100K) of 1M simultaneously as original 10 terminals, and adopt the words of present implementation only to need the 100K flow just can support (supposing that 10 users see same TV programme).This point is very large incomes for telecom operators.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (6)
1. media broadcasting method in the mobile communication system is characterized in that, comprises following steps,
The special-purpose access point numeral of registration multimedia broadcasting in attaching position register is provided with the special-purpose access point numeral of this multimedia broadcasting in the packet-switched domain of terminal is provided with in advance;
Customize the authorization interface between described attaching position register and the service gateway support node in advance;
Customize interface between described service gateway support node and the radio network controller in advance;
When described end point playing multimedia broadcasting service, the special-purpose access point numeral of described multimedia broadcasting is reported described service gateway support node, report authentication request to give described attaching position register by described service gateway support node;
Described attaching position register notifies described service gateway support node to carry out the special disposal of multimedia broadcasting call request by described authorization interface after having the request of the special-purpose access point numeral of described multimedia broadcasting in authentication;
Described service gateway support node when the described multimedia broadcasting call request of special disposal, by described customization and radio network controller between interface, notify described radio network controller to set up multimedia broadcasting private radio access bearer;
Base-station node is set up the multimedia broadcasting link, for all described terminals that receive broadcasting are provided with identical down channel sign indicating number.
2. media broadcasting method in the mobile communication system according to claim 1 is characterized in that, the flow process of handling the multimedia broadcasting calling also comprises following steps,
When calling out once more, described base-station node judges whether the pairing multimedia broadcasting link of current calling is set up, if, then directly use the down channel of this multimedia broadcasting link, the terminal that makes a call by notice after the authentication is from this down channel sign indicating number receiving multimedia broadcast.
3. media broadcasting method in the mobile communication system according to claim 2 is characterized in that, the flow process that described processing multimedia broadcasting is called out also comprises following steps,
When the terminal of accepting multi-media broadcasting service when current area switches to Target cell, if this Target cell has been set up corresponding multimedia broadcasting link, then directly use the down channel of this multimedia broadcasting link, the terminal after notice is switched is from this down channel sign indicating number receiving multimedia broadcast;
Otherwise, set up new multimedia broadcasting link at described Target cell.
4. media broadcasting method in the mobile communication system according to claim 3 is characterized in that, also comprises following steps,
Described terminal is in the free online multimedium business, and other dedicated channels of call setup are used to carry the outside ventures of affiliated multi-media broadcasting service.
5. according to media broadcasting method in any described mobile communication system of claim 1-4, it is characterized in that described multimedia broadcasting link forbidding up channel is forbidden being called out.
6. according to media broadcasting method in any described mobile communication system of claim 1-4, it is characterized in that described multimedia broadcasting link uses constant power, forbidding soft handover.
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| CN1476259A (en) * | 2002-08-16 | 2004-02-18 | ��������ͨ�ż����о�����˾ | Multi media broadcasting and method of organizing broadcasting business call finding |
| WO2005048529A1 (en) * | 2003-11-12 | 2005-05-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for performing inter-frequency and inter-rat handover measurements in mbms |
| CN1669341A (en) * | 2002-09-23 | 2005-09-14 | Lg电子株式会社 | Radio communication scheme for providing multimedia broadcast and multicast services (MBMS) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1476259A (en) * | 2002-08-16 | 2004-02-18 | ��������ͨ�ż����о�����˾ | Multi media broadcasting and method of organizing broadcasting business call finding |
| CN1669341A (en) * | 2002-09-23 | 2005-09-14 | Lg电子株式会社 | Radio communication scheme for providing multimedia broadcast and multicast services (MBMS) |
| WO2005048529A1 (en) * | 2003-11-12 | 2005-05-26 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for performing inter-frequency and inter-rat handover measurements in mbms |
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