CN102457808B - Device for supplying MBMS (Multimedia Broadcast Multicast Service) in heterogeneous network and corresponding heterogeneous network as well switching method - Google Patents
Device for supplying MBMS (Multimedia Broadcast Multicast Service) in heterogeneous network and corresponding heterogeneous network as well switching method Download PDFInfo
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Abstract
The invention provides a device for supplying a MBMS (Multimedia Broadcast Multicast Service) in a heterogeneous network, the heterogeneous network adopting the device as well a switching method for a user terminal accepting the MBMS in the heterogeneous network. The heterogeneous network comprises multiple networks which are provided with different network structures and adopt different communication protocols. The device for supplying the MBMS comprises a signaling receiving unit, a signaling generating and transmitting unit and a MBMS data supplying unit, wherein the signaling receiving unit is used for receiving a MBMS carrying establishing request from a gateway of the network to which the user terminal is switched, the signaling generating and transmitting unit is used for generating and transmitting control signaling which is used for establishing the MBMS carrying between the device and the gateway; and the MBMS data supplying unit is used for supplying synchronous MBMS data on the established MBMS carrying.
Description
Technical field
The present invention relates to wireless communication technology field, be specifically related to a kind of for provide multimedia broadcast multi-broadcasting business (MBMS, Multimedia Broadcast Multicast Service) device, adopt the heterogeneous network of this device and accept the method that the user terminal of MBMS service switches in heterogeneous network.
Background technology
Along with the day by day increase of the mankind to wireless communication needs, with communication, provide multimedia service more and more to receive publicity, the application such as mobile TV and video conference will be popularized in the coming years.
For the multimedia transmission of two-forty and high quality-of-service, clean culture can not meet the demands.In this case, multicast and broadcast are considered to improve the most effective mode of the availability of frequency spectrum.For this reason, 3GPP and 3GPP2 have all defined multicast broadcast multimedia service, respectively called after MBMS and BCMCS (Broadcast Multicast Service, BroadCast MultiCast Service).Both in each self-organizing, obtained extensive discussions, and in the process in continuous evolution.
In addition, multiple network the situation of depositing development are large features of current wireless communication field, so the switching in heterogeneous network just becomes an inevitable problem.For the clean culture between 3GPP Access Network and non-3 GPP access network, switch, at non-references 1 (3GPP TS 23.402, " Technical Specification Group Services and System Aspects; 3GPP System Architecture Evolution:Architecture enhancements for non-3GPP accesses ") and non-references 2 (3GPP TS 23.234, " Technical Specification Group Services and System Aspects; WLAN Subsystem; System Description ") in obtained extensive discussions, and multicast switching problem is not subject to too many concern and research at present.Yet along with the develop rapidly of multimedia service, MBMS service is inevitable also needs similar multicast to switch.Therefore, discuss and in heterogeneous network, provide MBMS and switching thereof to have very important meaning.
Summary of the invention
The object of the invention is, provide a kind of for the device of MBMS service is provided at heterogeneous network, adopt the heterogeneous network of this device and accept the method that the user terminal of MBMS service switches in heterogeneous network.
For this reason, according to a first aspect of the invention, proposed a kind of for the device of multicast broadcast multimedia service is provided at heterogeneous network, described heterogeneous network comprises a plurality of networks that have heterogeneous networks structure, adopt different communication protocol, described device comprises: signaling receiving element, for receiving the multicast broadcast multimedia service carrying of the gateway of the network that will switch to from user terminal, set up request; Signaling produces and transmitting element, for generation of with send control signaling, described control signal carries for set up multicast broadcast multimedia service between described device and described gateway; And multimedia broadcast multi-cast service data provides unit, for providing synchronous multimedia broadcast multi-cast service data in the multicast broadcast multimedia service carrying set up.
Preferably, described device can also comprise: authentication unit, and for the user terminal of heterogeneous network is carried out to authentication.In addition, described device can also comprise: Charging Detail Record unit, and for the multicast broadcast multimedia service that user terminal is accepted.
Preferably, described device can be to be upgraded and obtained by the broadcast/multicast service center in existing 3GPP network (BM-SC, Broadcast Multicast Service Center).
Preferably, if accept the user terminal access reliable non-3 GPP network of multicast broadcast multimedia service, the connection that described device and broadcast service node (BSN, Broadcast Service Node) are directly set up chain of command and user's face.Especially, define reference point: SG-bcmcs and SGi-bcmcs between described device and BSN, SG-bcmcs provides the Signalling exchange on chain of command, and SGi-bcmcs provides the transfer of data of user's face.
Preferably, if the non-3GPP network of the user terminal of multicast broadcast multimedia service access untrusted, the connection that described device and evolution packet data gateway (ePDG, Evolved Packet Data Gateway) are directly set up chain of command and user's face.In this case, described ePDG is suitable for from described device receiving multimedia broadcast multicast service data and control signal, and transmission and the management of responsible MBMS business in untrusted non-3 GPP access network.Especially, define reference point: Gi and Gmb between described device and ePDG, Gmb provides the Signalling exchange on chain of command, and Gi provides the transfer of data of user's face.
Preferably, in the downstream node of described device, described device and user terminal, store multimedia broadcast multicast user's context, in the downstream node of described device and described device, store multimedia broadcast multicast bearer context.Wherein, described multimedia broadcast multicast user's context comprises: the IP address of network identifier, same service content identifier, IP (Internet Protocol) multicast address and described device or the ePDG in heterogeneous networks; Described multimedia broadcast multicast bearer context comprises: the list of the downstream node of described device in the Access Network of heterogeneous networks.
According to a second aspect of the invention, proposed a kind of heterogeneous network, having comprised: a plurality of networks, there is different network configurations, adopt different communication protocol; And aforementioned for the device of multicast broadcast multimedia service is provided at heterogeneous network.
According to a third aspect of the invention we, a kind of method that user terminal of accepting multicast broadcast multimedia service switches in heterogeneous network has been proposed, described heterogeneous network comprises a plurality of networks that have heterogeneous networks structure, adopt different communication protocol, also comprise for the device of multicast broadcast multimedia service is provided, described method comprises: user terminal is via the gateway of that will switch to, different from former service network network, to described device request multicast broadcast multimedia service; Described device is responded the service request of user terminal via described gateway, represents to accept the service request of user terminal; Between described device and described gateway, set up multicast broadcast multimedia service carrying; Between user terminal and described gateway, set up the communication connection for transmitting multimedia broadcast multicast service; And discharge in former service network for the resource of multicast broadcast multimedia service is provided to user terminal.
Preferably, described method comprises: by described device, user terminal is carried out to authentication.
Accompanying drawing explanation
By below in conjunction with accompanying drawing explanation the preferred embodiments of the present invention, will make of the present invention above-mentioned and other objects, features and advantages are clearer, wherein:
Fig. 1 show take that BM-SC according to the present invention is anchor point according to the schematic diagram of heterogeneous network framework of the present invention;
Fig. 2 is the functional block diagram according to BM-SC of the present invention;
Fig. 3 shows the flow chart of the conventional method switching in heterogeneous network according to user terminal of the present invention, that accept multicast broadcast multimedia service;
Fig. 4 shows the user terminal of accepting multicast broadcast multimedia service and from 3GPP network, switches to the exemplary sequence diagram of reliable non-3 GPP network;
Fig. 5 shows the user terminal of accepting multicast broadcast multimedia service and from 3GPP network, switches to the exemplary sequence diagram of the non-3GPP network of untrusted; And
Fig. 6 shows the user terminal of accepting multicast broadcast multimedia service and from non-3GPP network, switches back the exemplary sequence diagram of 3GPP network.
Embodiment
For clear, at length set forth performing step of the present invention, provided some specific embodiments of the invention below.In these specific embodiments, suppose that multicast service is the MBMS service defining in 3GPP network, the device that multicast broadcast multimedia service is provided is that the broadcast/multicast service center (BM-SC) in existing 3GPP network is upgraded and obtained.Yet, it should be noted that, this is only given as examples, application of the present invention is not limited to this situation, and applicable to multicast service, is also that BCMCS service or the multicast service defining in 3GPP2 network is the situation of the respective service of definition in other non-3GPP networks (as WiMAX network).Thereby the BCMCS service that user terminal is defined also can be received in 3GPP2 in non-3GPP2 network in, or the multicast service defining also can be received in WiMAX network in non-WiMAX network in.
To a preferred embodiment of the present invention will be described in detail, in description process, having omitted is unnecessary details and function for the present invention with reference to the accompanying drawings, to prevent that the understanding of the present invention from causing, obscures.
Fig. 1 show take that BM-SC according to the present invention is anchor point according to the schematic diagram of heterogeneous network framework of the present invention.As shown in Figure 1, this heterogeneous network is formed by non-3GPP network (as WLAN (wireless local area network), the WiMAX network) isomery of 3GPP network, reliable non-3 GPP network (CDMA2000) and untrusted, and usings BM-SC according to the present invention as anchor point.Described BM-SC not only can with 3GPP network gateway between directly set up being connected of chain of command and user's face, can also with non-3GPP network gateway between directly set up being connected of chain of command and user's face.
As shown in Figure 1, consider the progressively evolution process of 3GPP network, 3GPP network insertion net had both comprised GSM EDGE wireless access network (GERAN, GSM EDGE Radio Access Network) comprise again universal terrestrial access network (UTRAN, Universal Terrestrial Radio Access Network) and the universal terrestrial access network (E-UTRAN, Evolved UTRAN) of evolution.GERAN and Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node) connect, and E-UTRAN is connected with MBMS gateway, and UTRAN both can be connected with GGSN also and can be connected with MBMS gateway.Between GGSN and BM-SC, there is two reference point: Gmb and Gi, Signalling exchange on chain of command and the transfer of data of user's face are provided respectively.Between E-UTRAN and BM-SC, also there is two reference point: SGmb and SGi-mb, Signalling exchange on chain of command and the transfer of data of user's face are provided respectively.
For providing of MBMS service is provided in reliable non-3 GPP Access Network, according to the similitude of 3GPP internet and 3G PP2 network, heterogeneous network framework of the present invention has defined two reference point: SG-bcmcs and SGi-bcmcs in BM-SC and 3GPP2 network between broadcast service node (BSN), SG-bcmcs provides the Signalling exchange on chain of command, and SGi-bcmcs provides the transfer of data of user's face.
The signaling of the upper transmission of SG-bcmcs can comprise: the control information that control request (as registration request), the BM-SC that BSN sends instructs BSN to carry to set up is, the information (as data flow identifiers and key etc.) of respective service and for the information of authentication.
The effect of SGi-bcmcs is to provide the passage of the Multimedia Data Transmission from BM-SC to BSN.Although identical in the content of the multi-medium data transmitting by SGi-bcmcs and 3GPP network, need in BM-SC, complete the modification of data format and agreement, amended data format and agreement can be accepted by BSN.When transfer of data starts, the information that BM-SC provides by user member's functional entity is carried out charging.
In addition, the non-3GPP network interaction of defined 3GPP network/untrusted framework in 3GPP is improved and strengthened, so that providing of MBMS service to be provided in untrusted non-3 GPP access network.Particularly, between BM-SC and evolution packet data gateway (ePDG), introduced with 3GPP Access Network in same reference point: Gmb and Gi, Gmb provides the Signalling exchange on chain of command, Gi provides the transfer of data of user's face.In addition, ePDG is carried out to corresponding adaptation, make it upwards compatible with BM-SC on the one hand, possess the corresponding function of MBMS gateway/GGSN; Manage on the other hand untrusted non-3 GPP access network downwards.And BM-SC is adapted to be the connection that can set up signaling and carrying according to network identity and correct ePDG address and untrusted non-3 GPP access network.
As seen from Figure 1, the key that provides in heterogeneous network and manage MBMS service is provided BM-SC according to the present invention.The same with the traditional B M-SC in homogenous networks, the BM-SC in heterogeneous network is also the large service centre that is responsible for the functional unit formation of the functions such as content initiation and management and authenticating and charging, and all MBMS business all realize by this service centre; But compare with the BM-SC in homogenous networks, the BM-SC in heterogeneous network also has the feature of switching in heterogeneous network of supporting MBMS service.Below with reference to Fig. 2, functional structure, BM-SC according to the present invention is described in detail.
Fig. 2 is according to the functional block diagram of BM-SC 200 of the present invention.As shown in Figure 2, for the switching in heterogeneous network of the user terminal of supporting to accept MBMS service, need to upgrade to existing BM-SC, it is at least comprised: signaling receiving element 201, signaling produce and transmitting element 202, multimedia broadcast multi-cast service data provide unit 203.In addition,, for the existing authentication of compatible traditional B M-SC and billing function, BM-SC 200 can comprise authentication unit 204 and Charging Detail Record unit 205.In Fig. 2, with dotted line frame, be connected with dotted line and represent that authentication unit 204 and Charging Detail Record unit 205 are functions of compatible traditional B M-SC.The major function that each functional unit is realized is as follows:
Signaling receiving element 201 is set up request for receiving the multicast broadcast multimedia service carrying of the gateway of the network that will switch to from user terminal;
Signaling produce and transmitting element 202 for generation of with send control signaling, described control signal carries for set up multicast broadcast multimedia service between described device and described gateway;
Multimedia broadcast multi-cast service data provides unit 203 for providing synchronous multimedia broadcast multi-cast service data in the multicast broadcast multimedia service carrying set up;
Authentication unit 204 is for carrying out authentication to the user terminal of heterogeneous network; And
The multicast broadcast multimedia service of Charging Detail Record unit 205 for user terminal is accepted.
In addition, in order to support authentication, authentication and billing function and some management function, except processing for initiating and set up the signaling of multicast broadcast multimedia service carrying, signaling receiving element 201, signaling produce and transmitting element 202 also can be processed for implementing the signaling of management and for carrying out the signaling of authentication, authentication and charging.
For convenience of relevant treatment, also MBMS user's context (MBMS UE CONTEXT) and MBMS bearer context (MBMS BEARER CONTEXT) are supplemented.Particularly, in BM-SC and the MBMS user's context of depositing in downstream node and the user terminal IP address that need to add network identifier, same service content identifier, ip multicast address, corresponding BM-SC or the ePDG in heterogeneous networks.User terminal network identifier of living in can allow BM-SC realize the difference charge according to heterogeneous networks.Same service content can allow user terminal identify the MBMS service that it need to be accepted at the identifier of corresponding heterogeneous network.Thereby the IP address of corresponding BM-SC or ePDG can help user terminal to find corresponding upstream node can set up Signalling exchange and Deta bearer path.Ip multicast address can help user terminal to add corresponding multicast group.
The MBMS bearer context of depositing in BM-SC and downstream node also needs meaningful interpolation.For each Access Network, the downstream node list of Access Network all must preserve to realize the management that carrying is set up.
Heterogeneous network according to BM-SC of the present invention and this BM-SC of employing described above is supported broadcast and multicast pattern simultaneously.
Broadcast mode is relatively simple, does not need BM-SC and each user terminal to have direct Signalling exchange, and user's context does not need to preserve under this pattern.BM-SC is when providing MBMS service for heterogeneous network, flow process is as follows:
(1) the broadcast service incipient stage, BM-SC sends service and starts request (network identifier can be distinguished Access Network) to ePDG and BSN.EPDG and BSN will set up MBMS bearer context, obtain downstream node (route in WLAN (wireless local area network), the BSC/PCF in CDMA2000 network (Base Station Controller/Packet Control Funtion)) list simultaneously.
(2) according to this list, ePDG/BSN starts to set up carrying downwards, and the service that then sends starts response signaling and represents to activate successfully to BM-SC.
If termination broadcast service, BM-SC sends end of service request to ePDG and BSN.EPDG and BSN will remove MBMS bearer context, and releasing bearing, then sends end of service response signaling and represent to stop successfully to BM-SC simultaneously.
And switching under multicast pattern wants complicated a lot, BM-SC needs and each user terminal have direct signaling contact.Fig. 3 shows the flow chart of the conventional method 300 switching in heterogeneous network according to user terminal of the present invention, that accept multicast broadcast multimedia service.Described heterogeneous network comprises a plurality of networks that have heterogeneous networks structure, adopt different communication protocol, also comprise according to of the present invention, as the anchor point of described a plurality of networks, for the device of multicast broadcast multimedia service is provided.As shown in Figure 3, in step S301, user terminal is via the gateway of that will switch to, different from former service network network, to described device request multicast broadcast multimedia service.In step S302, described device is responded the service request of user terminal via described gateway, represents to accept the service request of user terminal.In step S303, between the gateway of the network that will access at described device and user terminal, set up multicast broadcast multimedia service carrying.In step S304, between the gateway of the network that will access at user terminal and user terminal, set up the communication connection for transmitting multimedia broadcast multicast service.In step S305, discharge in former service network for the resource of multicast broadcast multimedia service is provided to user terminal.Alternatively, changing method also comprises and by described device, user terminal is carried out the step of authentication.
Below, with reference to Fig. 4,5 and 6, specifically described and accepted signaling and the data exchange process that the user terminal of multicast broadcast multimedia service switches to reliable non-3 GPP network, switches to the non-3GPP network of untrusted and switch back 3GPP network from non-3GPP network from 3GPP network from 3GPP network.In Fig. 4,5 and 6, using according to of the present invention, as the anchor point of described a plurality of networks, for providing the device of multicast broadcast multimedia service to be shown BM-SC, and show the Signalling exchange when BM-SC carries out authentication to user terminal.But as above to according to of the present invention pointed when providing the device of multicast broadcast multimedia service to be described, authentication function can be carried out by this device is compatible, also can be realized by other devices.Correspondingly, one of ordinary skill in the art will recognize, is also optional for carrying out the Signalling exchange of authentication in Fig. 4,5 and 6 between BM-SC and user terminal, and not necessarily necessary.
Fig. 4 shows the user terminal of accepting multicast broadcast multimedia service and from 3GPP network, switches to the exemplary sequence diagram of reliable non-3 GPP network.As shown in Figure 4, the flow process that user terminal switches to the general employing of reliable non-3 GPP network from 3GPP network is as follows:
(1) user terminal is served by 3GPP network reception MBMS.
(2) user terminal is found available reliable non-3 GPP network, and determines to be linked in this network by certain mode decision scheme, starts to switch thereupon.
(3) user terminal can be known service data traffic identifier and the IP address of desired service in this reliable non-3 GPP network by context, thereby starts to initiate the registration request of this specific transactions.
(4) non-3 GPP access network that user terminal will adhere to sends demand signalling to corresponding BM-SC, and this signaling comprises service data traffic identifier, authentication parameter.The IP address of BM-SC is in user's context.
(5) BM-SC after upgrading can process the demand signalling being sent by non-3GPP network, and it is carried out to authentication.Subsequently, BM-SC sends Access Network request to corresponding non-3 GPP access network and accepts signaling, comprises service content information and carrying and set up relevant parameter in this signaling.
(6) Access Network sends registration to user terminal and accepts signaling.
(7) between non-3GPP network and BM-SC, set up respective carrier.
(8) non-3GPP network is set up necessary wireless access network resource for switching user terminal, so that transmission obtains MBMS data subsequently.
(9) BM-SC starts to provide required MBMS business datum to the user terminal that switches to this non-3GPP network.The service content in 3GPP network is identical and synchronous originally with user terminal for this business, makes user terminal before and after switching, can receive coherent consistent service data.
(10) if user terminal completes after switching, in former 3GPP Access Network, do not had user terminal to receive again this service, trigger the release of 3GPP Internet resources.
Fig. 5 shows the user terminal of accepting multicast broadcast multimedia service and from 3GPP network, switches to the exemplary sequence diagram of the non-3GPP network of untrusted.As shown in Figure 5, the flow process that user terminal switches to the general employing of the non-3GPP network of untrusted from 3GPP network is as follows:
(1) user terminal is served by 3GPP network reception MBMS.
(2) user terminal is found the non-3GPP network of available untrusted, and determines to be linked in this network by certain mode decision scheme, starts to switch thereupon.
(3) user terminal can be known the IP address of the ePDG that it need to connect by context, thereby contacts with its foundation.EPDG and BM-SC carry out Signalling exchange, thereby user terminal is carried out to authentication.
(4) after user terminal is authorized, ePDG sends an IP address to user terminal, sets up IPsec tunnel simultaneously between user terminal and ePDG, and this tunnel is for Signalling exchange.
(5) user terminal sends activation request to add multicast group to ePDG.
(6), if ePDG does not also set up beared information, to BM-SC, send registration request, to set up carrying.
(7) BM-SC upgrades MBMS bearer context, crosses registration response and sends to ePDG simultaneously by setting up relevant information exchange to carrying.
(8) ePDG informs user terminal it successfully adds multicast group and bearer related information is provided by activating response signaling.
(9) completing carrying sets up.
(10) BM-SC starts MBMS transmission data.
(11) if user terminal completes after switching, in former 3GPP Access Network, do not had user terminal to receive again this service, trigger the release of 3GPP Internet resources.
Fig. 6 shows the user terminal of accepting multicast broadcast multimedia service and from non-3GPP network, switches back the exemplary sequence diagram of 3GPP network.As shown in Figure 6, the flow process that user terminal switches to the general employing of 3GPP network from non-3GPP network is as follows:
(1) user terminal is being served by non-3GPP network reception MBMS.
(2) user terminal is found available 3GPP universal terrestrial access network (UTRAN) or GSM EDGE wireless access network (GERAN), and determines to be linked in this network by certain mode decision scheme, starts to switch thereupon.
(3) user terminal sends and adheres to request to GPRS serving GPRS support node (SGSN).
(4) SGSN carries out Signalling exchange by Gateway GPRS Support Node (GGSN) with BM-SC, and BM-SC carries out authentication to user terminal.
(5) after successful authentication, SGSN is by executing location refresh routine.If this user terminal is that in specific multicast group, first enters the user terminal of this UTRAN network, Radio Resource and access network resource will according to non-references 3 (3GPP TS 23.246, " Technical Specification Group Services and System Aspects; Multimedia Broadcast/Multicast Service (MBMS); Architecture and functional description ") in defined flow process set up; and if user terminal is not first user terminal that enters this UTRAN network in multicast group, because carrying itself has established without again setting up.
(6) user terminal receives MBMS data by UTRAN system.
(7) if there is no to receive the user terminal of same service in former non-3GPP network, discharge its resource.
In above description, for each step, enumerated Multi-instance, although inventor indicates example associated with each other as much as possible, this does not also mean that these examples must exist corresponding relation according to corresponding label.Need only between the condition that selected example is given and do not have contradiction, can in different steps, select the not corresponding example of label to form corresponding technical scheme, such technical scheme also should be considered as within the scope of the invention involved.
It should be noted in the discussion above that in above description, only in the mode of example, show technical scheme of the present invention, but be not intended that the invention be limited to above-mentioned steps and cellular construction.Under possible situation, can as required step and cellular construction be adjusted and be accepted or rejected.Therefore, the necessary element of overall invention thought of the present invention is not implemented in some step and unit.Therefore, technical characterictic essential to the invention is only limited to the minimum requirements that can realize overall invention thought of the present invention, and is not subject to the restriction of above instantiation.
So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that, those skilled in the art without departing from the spirit and scope of the present invention, can carry out various other change, replacement and interpolations.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.
Claims (13)
1. for provide a device for multicast broadcast multimedia service, described heterogeneous network to comprise at heterogeneous network, have heterogeneous networks structure, adopt a plurality of networks of different communication protocol, described device comprises:
Signaling receiving element, sets up request for receiving the multicast broadcast multimedia service carrying of the gateway of the network that will switch to from user terminal;
Signaling produces and transmitting element, for generation of with send control signaling, described control signal carries for set up multicast broadcast multimedia service between described device and described gateway; And
Multimedia broadcast multi-cast service data provides unit, for providing synchronous multimedia broadcast multi-cast service data in the multicast broadcast multimedia service carrying set up,
Wherein, in the downstream node of described device, described device and user terminal, store multimedia broadcast multicast user's context, in the downstream node of described device and described device, store multimedia broadcast multicast bearer context, and
Described multimedia broadcast multicast user's context comprises: the IP address of network identifier, same service content identifier, ip multicast address and described device or the ePDG in heterogeneous networks; Described multimedia broadcast multicast bearer context comprises: the list of the downstream node of described device in the Access Network of heterogeneous networks.
2. device according to claim 1, also comprises: authentication unit, and for the user terminal of heterogeneous network is carried out to authentication.
3. device according to claim 2, also comprises: Charging Detail Record unit, and for the multicast broadcast multimedia service that user terminal is accepted.
4. device according to claim 1, is characterized in that: if accept the user terminal access 3GPP network of multicast broadcast multimedia service, described device is directly set up being connected of chain of command and user's face with MBMS gateway or GGSN.
5. device according to claim 4 wherein, defines reference point: SGmb and SGi-mb between described device and MBMS gateway, and SGmb provides the Signalling exchange on chain of command, and SGi-mb provides the transfer of data of user's face; Between described device and GGSN, define reference point: Gmb and Gi, Gmb provides the Signalling exchange on chain of command, and Gi provides the transfer of data of user's face.
6. device according to claim 1, is characterized in that: if accept the user terminal access reliable non-3 GPP network of multicast broadcast multimedia service, described device is directly set up being connected of chain of command and user's face with broadcast service Node B SN.
7. device according to claim 6 wherein, defines reference point: SG-bcmcs and SGi-bcmcs between described device and BSN, and SG-bcmcs provides the Signalling exchange on chain of command, and SGi-bcmcs provides the transfer of data of user's face.
8. device according to claim 1, is characterized in that: if the non-3GPP network of the user terminal of multicast broadcast multimedia service access untrusted, described device is directly set up being connected of chain of command and user's face with evolution packet data gateway ePDG.
9. device according to claim 8, wherein, described ePDG is suitable for from described device receiving multimedia broadcast multicast service data and control signal, and transmission and the management of responsible MBMS business in untrusted non-3 GPP access network.
10. device according to claim 9 wherein, defines reference point: Gi and Gmb between described device and ePDG, and Gmb provides the Signalling exchange on chain of command, and Gi provides the transfer of data of user's face.
11. 1 kinds of heterogeneous networks, comprising:
A plurality of networks, have different network configurations, adopt different communication protocol; And
According to described in any one in claim 1 to 10, for the device of multicast broadcast multimedia service is provided at heterogeneous network.
12. 1 kinds of methods that the user terminal of accepting multicast broadcast multimedia service switches in heterogeneous network, described heterogeneous network comprises a plurality of networks that have heterogeneous networks structure, adopt different communication protocol, also comprise that described method comprises for the device of multicast broadcast multimedia service is provided:
User terminal is via the gateway of that will switch to, different from former service network network, to described device request multicast broadcast multimedia service;
Described device is responded the service request of user terminal via described gateway, represents to accept the service request of user terminal;
Between described device and described gateway, set up multicast broadcast multimedia service carrying;
Between user terminal and described gateway, set up the communication connection for transmitting multimedia broadcast multicast service; And
Discharge in former service network for the resource of multicast broadcast multimedia service is provided to user terminal,
Wherein, in the downstream node of described device, described device and user terminal, store multimedia broadcast multicast user's context, in the downstream node of described device and described device, store multimedia broadcast multicast bearer context, and
Described multimedia broadcast multicast user's context comprises: the IP address of network identifier, same service content identifier, ip multicast address and described device or the ePDG in heterogeneous networks; Described multimedia broadcast multicast bearer context comprises: the list of the downstream node of described device in the Access Network of heterogeneous networks.
13. methods according to claim 12, also comprise: by described device, user terminal is carried out to authentication.
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| CN106488409B (en) * | 2015-08-29 | 2020-01-21 | 华为技术有限公司 | Method, device and system for unicast transmission of broadcast multicast data |
| CN109089288B (en) * | 2017-06-14 | 2020-12-25 | 华为技术有限公司 | Data transmission method and equipment |
| US11700508B2 (en) * | 2018-01-03 | 2023-07-11 | Interdigital Patent Holdings, Inc. | Multicast and broadcast services in 5G networks for IoT applications |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101860800A (en) * | 2010-05-20 | 2010-10-13 | 北京邮电大学 | Method for providing MBMS service by fusion of cellular network and broadcast network, system and device |
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| CN101860800A (en) * | 2010-05-20 | 2010-10-13 | 北京邮电大学 | Method for providing MBMS service by fusion of cellular network and broadcast network, system and device |
Non-Patent Citations (2)
| Title |
|---|
| 3GPP ZET.General definition and description for MBMS support in EPS.《3GPP TSG-CT WG3 Meeting #54 |
| General definition and description for MBMS support in EPS;3GPP,ZET;《3GPP TSG-CT WG3 Meeting #54,C3-091079》;20090828;对比文件2中3.2，3.3节 * |
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