CN102457808A - 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 device that is used to provide multimedia broadcast multi-broadcasting business (MBMS, Multimedia Broadcast Multicast Service), 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, provide multimedia service more and more to receive publicity with communication, 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 broadcasting are considered to improve the effective and efficient manner of the availability of frequency spectrum.For this reason, 3GPP and 3GPP2 have all defined the multimedia broadcast multicast service, respectively called after MBMS and BCMCS (Broadcast Multicast Service, BroadCast MultiCast Service).The both has obtained extensive discussions in each self-organizing, and is in the process of continuous evolution.
In addition, multiple network and the situation of depositing development are big characteristics of present wireless communication field, so the switching in the heterogeneous network just becomes a unavoidable problem.Switch for the clean culture between 3GPP Access Network and non-3 GPP access network, 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 the multicast switching problem does not receive too many concern and research at present.Yet along with rapid development of multimedia services, the MBMS service is inevitable also to need similar multicast to switch.Therefore, discussion provides MBMS and switching thereof that crucial meaning is arranged in heterogeneous network.
Summary of the invention
The objective of the invention is, a kind of device that is used for providing at heterogeneous network MBMS service is provided, 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; A kind of device that is used for providing at heterogeneous network the multimedia broadcast multicast service has been proposed; Said heterogeneous network comprises a plurality of networks that have the heterogeneous networks structure, adopt different communication protocol, and said device comprises: the signaling receiving element, and the multimedia broadcast multicast service carrier that is used to receive the gateway of the network that will switch to from user terminal institute is set up and is asked; Signaling produces and transmitting element, is used for producing and sending control signaling, and said control signaling is used between said device and said gateway, setting up the multimedia broadcast multicast service carrier; And multimedia broadcast multi-cast service data provides the unit, is used on the multimedia broadcast multicast service carrier of being set up, synchronous multimedia broadcast multi-cast service data being provided.
Preferably, said device can also comprise: the authentication unit is used for the user terminal of heterogeneous network is carried out authentication.In addition, said device can also comprise: Charging Detail Record unit is used for the multimedia broadcast multicast service that user terminal is accepted.
Preferably, said device can be to obtain through the broadcast/multicast service center (BM-SC, Broadcast Multicast Service Center) in the existing 3GPP network is upgraded.
Preferably, insert the reliable non-3 GPP network if accept the user terminal of multimedia broadcast multicast service, said device and broadcast service node (BSN, Broadcast Service Node) are directly set up being connected of chain of command and user plane.Especially, between said device and BSN, define reference point: SG-bcmcs and SGi-bcmcs, SG-bcmcs provides the Signalling exchange on the chain of command, and SGi-bcmcs provides the user side data transmission.
Preferably, if the user terminal of multimedia broadcast multicast service inserts the non-3GPP network of untrusted, said device and evolution packet data gateway (ePDG, Evolved Packet Data Gateway) are directly set up being connected of chain of command and user plane.In this case, said ePDG is suitable for from said device receiving multimedia broadcast multicast service data and control signaling, and transmission and the management of responsible MBMS business in the untrusted non-3 GPP access network.Especially, between said device and ePDG, define reference point: Gi and Gmb, Gmb provides the Signalling exchange on the chain of command, and Gi provides the user side data transmission.
Preferably, storage multimedia broadcast multicast user's context in the downstream node of said device, said device and user terminal, storage multimedia broadcast multicast bearer context in the downstream node of said device and said device.Wherein, said multimedia broadcast multicast user's context comprises: the IP address of network identifier, same service content identifier, IP (Internet Protocol) multicast address and said device or the ePDG in heterogeneous networks; Said multimedia broadcast multicast bearer context comprises: the tabulation of the downstream node of said 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, have the various network structure, adopt different communication protocol; And the aforementioned device that is used for providing the multimedia broadcast multicast service at heterogeneous network.
According to a third aspect of the invention we; The method that a kind of user terminal of accepting the multimedia broadcast multicast service switches in heterogeneous network has been proposed; Said heterogeneous network comprises a plurality of networks that have the heterogeneous networks structure, adopt different communication protocol; Also comprise the device that is used to provide the multimedia broadcast multicast service, said method comprises: that user terminal will switch to via institute, with the gateway of former service network various network, serve to said device requests multimedia broadcast multicast; Said device responds via the services request of said gateway to user terminal, and the services request of user terminal is accepted in expression; Between said device and said gateway, set up the multimedia broadcast multicast service carrier; Between user terminal and said gateway, setting up the communication that is used for the transmitting multimedia broadcast multicast service is connected; And discharge the resource that is used for providing multimedia broadcast multicast service in the former service network to user terminal.
Preferably, said method comprises: by said device user terminal is carried out authentication.
Description of drawings
Through below in conjunction with description of drawings the preferred embodiments of the present invention, will make above-mentioned and other purpose of the present invention, feature and advantage clearer, wherein:
It is the sketch map according to heterogeneous network framework of the present invention of anchor point that Fig. 1 shows with BM-SC according to 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 that in heterogeneous network, switches according to user terminal of the present invention, that accept the multimedia broadcast multicast service;
Fig. 4 shows the user terminal of accepting the multimedia broadcast multicast service switches to the reliable non-3 GPP network from the 3GPP network exemplary sequence diagram;
Fig. 5 shows the user terminal of accepting the multimedia broadcast multicast service switches to the non-3GPP network of untrusted from the 3GPP network exemplary sequence diagram; And
Fig. 6 shows the user terminal of accepting the multimedia broadcast multicast service switches back the 3GPP network from non-3GPP network exemplary sequence diagram.
Embodiment
At length set forth performing step of the present invention for clear, provided some specific embodiments of the present invention below.In these specific embodiments, suppose that the multicast service is the MBMS service that in the 3GPP network, defines, the device that the multimedia broadcast multicast service is provided is the broadcast/multicast service center (BM-SC) in the existing 3GPP network to be upgraded obtain.Yet; Need to prove; This only provides as an example; Application of the present invention is not limited to this situation, and is that BCMCS service or the multicast service that in the 3GPP2 network, defines is the situation of the respective service of definition in other non-3GPP networks (like the WiMAX network) applicable to the multicast service also.Thereby the BCMCS that makes user terminal in non-3GPP2 network, also can be received in to define among 3GPP2 service, or in non-WiMAX network, also can be received in the multicast service that defines in the WiMAX network.
To a preferred embodiment of the present invention will be described in detail, in the description process, having omitted is unnecessary details and function for the present invention with reference to the accompanying drawings, obscures to prevent understanding of the present invention caused.
It is the sketch map according to heterogeneous network framework of the present invention of anchor point that Fig. 1 shows with BM-SC according to the present invention.As shown in Figure 1, this heterogeneous network is formed by non-3GPP network (like WLAN, the WiMAX network) isomery of 3GPP network, reliable non-3 GPP network (CDMA2000) and untrusted, and with BM-SC according to the present invention as anchor point.Said BM-SC not only can with the 3GPP network gateway between directly set up being connected of chain of command and user plane, can also with non-3GPP network gateway between directly set up being connected of chain of command and user plane.
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) comprises the universal terrestrial access network (E-UTRAN, Evolved UTRAN) of universal terrestrial access network (UTRAN, Universal Terrestrial Radio Access Network) and evolution again.GERAN and Gateway GPRS Support Node (GGSN, Gateway GPRS Support Node) connect, and E-UTRAN is connected with the MBMS gateway, and UTRAN both can be connected with GGSN also and can be connected with the MBMS gateway.Have two reference point: Gmb and Gi between GGSN and BM-SC, Signalling exchange and user side data transmission on the chain of command are provided respectively.Also have two reference point: SGmb and SGi-mb between E-UTRAN and BM-SC, Signalling exchange and user side data transmission on the chain of command are provided respectively.
In order in the reliable non-3 GPP Access Network, to realize providing of MBMS service; Similitude according to 3GPP network and 3GPP2 network; Heterogeneous network framework of the present invention has defined two reference point: SG-bcmcs and SGi-bcmcs between the broadcast service node (BSN) in BM-SC and 3GPP2 network; SG-bcmcs provides the Signalling exchange on the chain of command, and SGi-bcmcs provides the user side data transmission.
The signaling of the last transmission of SG-bcmcs can comprise: the information that the control request that BSN sends (like register requirement), BM-SC instruct BSN to carry the control information of foundation, the information of respective service (like data flow identifier and key etc.) and be used for authentication.
The effect of SGi-bcmcs is to provide the transmission channel of the multi-medium data from BM-SC to BSN.Though identical in the content of the multi-medium data through SGi-bcmcs transmission and the 3GPP network, need in BM-SC, accomplish the modification of data format and agreement, amended data format and agreement can be accepted by BSN.When transfer of data began, BM-SC chargeed through the information that user member's functional entity provides.
In addition, the non-3GPP network interaction of the 3GPP network/untrusted framework that has defined among the 3GPP is improved and strengthens, in the untrusted non-3 GPP access network, to realize providing of MBMS service.Particularly, between BM-SC and evolution packet data gateway (ePDG), introduced with the 3GPP Access Network in same reference point: Gmb and Gi, Gmb provides the Signalling exchange on the chain of command, Gi provides user side data transmission.In addition, ePDG is carried out adaptive accordingly, make its on the one hand upwards and BM-SC compatible, possess the corresponding function of MBMS gateway/GGSN; Manage the untrusted non-3 GPP access network on the other hand downwards.And BM-SC is adapted to be and can sets up being connected of signaling and carrying with correct ePDG address with the untrusted non-3 GPP access network according to network identity.
Visible by Fig. 1, BM-SC according to the present invention is implemented in the key that provides in the heterogeneous network and manage the MBMS service.The same with the traditional B M-SC in the homogenous networks, the BM-SC in the heterogeneous network also is the big service centre that is responsible for the functional unit formation of content initiation and functions such as management and authenticating and charging, and all MBMS business all realize through this service centre; But compare with the BM-SC in the homogenous networks, the BM-SC in the heterogeneous network also has the characteristics of in heterogeneous network, switching of supporting the MBMS service.Below with reference to Fig. 2, on functional structure, BM-SC according to the present invention is described in detail.
Fig. 2 is the functional block diagram according to BM-SC 200 of the present invention.As shown in Figure 2; In order to support to accept the switching of user terminal in heterogeneous network of MBMS service; Need upgrade to existing BM-SC, it is comprised at least: signaling receiving element 201, signaling produce and transmitting element 202, multimedia broadcast multi-cast service data provide unit 203.In addition, for 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, being connected expression authentication unit 204 with dotted line with frame of broken lines is functions of compatible traditional B M-SC with Charging Detail Record unit 205.The major function that each functional unit is realized is following:
Signaling receiving element 201 be used to receive from user terminal the multimedia broadcast multicast service carrier of gateway of the network that will switch to set up request;
Signaling produces and transmitting element 202 is used for producing and sending control signaling, and said control signaling is used between said device and said gateway, setting up the multimedia broadcast multicast service carrier;
Multimedia broadcast multi-cast service data provides unit 203 to be used on the multimedia broadcast multicast service carrier of being set up, synchronous multimedia broadcast multi-cast service data being provided;
Authentication unit 204 is used for the user terminal of heterogeneous network is carried out authentication; And
Charging Detail Record unit 205 is used for multimedia broadcast multicast service that user terminal is accepted.
In addition; In order to support authentication, authentication and billing function and some management function; Except processing is used to initiate and set up the signaling of multimedia broadcast multicast service carrier, signaling receiving element 201, signaling produce and transmitting element 202 also can be handled the signaling that is used to the signaling of implementing to manage and is used to carry out authentication, authentication and charging.
For making things convenient for relevant treatment, also MBMS user's context (MBMS UE CONTEXT) and MBMS bearer context (MBMS BEARER CONTEXT) are replenished.Particularly, in BM-SC and the MBMS user's context of depositing in downstream node and the user terminal IP address that need 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 let BM-SC realize the difference charge according to heterogeneous networks.Same service content can let its MBMS that need accept of user terminal identification serve 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 Data-carrying path.The ip multicast address can help user terminal to add corresponding multi-broadcast group.
The MBMS bearer context of in BM-SC and downstream node, depositing also needs content to be added.For each Access Network, the tabulation of the downstream node of Access Network all must be preserved the management of setting up carrying to realize.
That more than describes supports broadcasting and multicast pattern according to BM-SC of the present invention with the heterogeneous network that adopts this BM-SC simultaneously.
Broadcast mode is relatively simple, does not need BM-SC and each user terminal that direct Signalling exchange is arranged, and user's context does not need to preserve under this pattern.BM-SC is when providing the MBMS service for heterogeneous network, flow process is following:
(1) the broadcast service incipient stage, ePDG and BSN are given in the BM-SC service of sending beginning request (network identifier can be distinguished Access Network).EPDG and BSN will set up the MBMS bearer context, obtain downstream node (route in the WLAN, the BSC/PCF in the CDMA2000 network (Base Station Controller/Packet Control Funtion)) tabulation simultaneously.
(2) according to this tabulation, ePDG/BSN begins to set up downwards to carry, and sends service beginning response signaling then and representes to activate successfully to BM-SC.
If the termination broadcast service, BM-SC sends the end of service request and gives ePDG and BSN.EPDG and BSN will remove the MBMS bearer context, and releasing bearing sends the end of service response signaling then and representes to stop successfully to BM-SC simultaneously.
And the switching under the multicast pattern wants complicated a lot, and BM-SC needs with each user terminal direct signaling contact is arranged.Fig. 3 shows the flow chart of the conventional method 300 that in heterogeneous network, switches according to user terminal of the present invention, that accept the multimedia broadcast multicast service.Said heterogeneous network comprises a plurality of networks that have the heterogeneous networks structure, adopt different communication protocol, also comprise according to of the present invention, as device anchor point, that be used to provide the multimedia broadcast multicast service of said a plurality of networks.As shown in Figure 3, in step S301, user terminal via to switch to, with the gateway of former service network various network, to said device requests multimedia broadcast multicast service.In step S302, said device responds via the services request of said gateway to user terminal, and the services request of user terminal is accepted in expression.In step S303, said device and user terminal set up the multimedia broadcast multicast service carrier between the gateway of the network that will insert.In step S304, user terminal and user terminal set up the communication that is used for the transmitting multimedia broadcast multicast service between the gateway of the network that will insert and be connected.In step S305, discharge the resource that is used for providing the multimedia broadcast multicast service in the former service network to user terminal.Alternatively, changing method also comprises the step of user terminal being carried out authentication by said device.
Below, specifically described signaling and data exchange process that the user terminal of accepting the multimedia broadcast multicast service switches to the reliable non-3 GPP network, switches to the non-3GPP network of untrusted and switch back the 3GPP network from non-3GPP network from the 3GPP network from the 3GPP network with reference to Fig. 4,5 and 6.In Fig. 4,5 and 6, will according to of the present invention, as the anchor point of said a plurality of networks, be used to provide the device of multimedia broadcast multicast service to be shown BM-SC, and show the Signalling exchange when BM-SC carries out authentication to user terminal.But as the front when the device that is used to provide the multimedia broadcast multicast service according to the present invention is described pointed, the 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, to carry out the Signalling exchange of authentication also be optional being used between BM-SC and user terminal among Fig. 4,5 and 6, and be not necessarily necessary.
Fig. 4 shows the user terminal of accepting the multimedia broadcast multicast service switches to the reliable non-3 GPP network from the 3GPP network exemplary sequence diagram.As shown in Figure 4, user terminal is following from the flow process that the 3GPP network switches to the general employing of reliable non-3 GPP network:
(1) user terminal receives the MBMS service through the 3GPP network.
(2) user terminal is found available reliable non-3 GPP network, and is linked in this network through certain mode decision scheme decision, begins 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 through context, thereby begins to initiate the register requirement of this specific transactions.
(4) user terminal the non-3 GPP access network that will adhere to send demand signalling to corresponding BM-SC, this signaling comprises server data stream sign, authentication parameter.The IP address of BM-SC is in user's context.
(5) BM-SC after the upgrading can handle the demand signalling that is sent by non-3GPP network, and it is carried out authentication.Subsequently, BM-SC sends the Access Network request to corresponding non-3 GPP access network and accepts signaling, comprises service content information and carrying in this signaling and sets up relevant parameter.
(6) Access Network sends registration to user terminal and accepts signaling.
(7) set up respective carrier between non-3GPP network and the BM-SC.
(8) non-3GPP network is set up necessary wireless access network resource for switching user terminal, so that transmission obtains the MBMS data subsequently.
(9) BM-SC begins to the user terminal that switches to this non-3GPP network required MBMS business datum to be provided.The service content in the 3GPP network is identical and synchronous originally with user terminal for this business, makes user terminal before and after switching, can receive the consistent service data that links up.
(10) if after user terminal is accomplished switching, do not had user terminal to receive this service again in the former 3GPP Access Network, then trigger the release of 3GPP Internet resources.
Fig. 5 shows the user terminal of accepting the multimedia broadcast multicast service switches to the non-3GPP network of untrusted from the 3GPP network exemplary sequence diagram.As shown in Figure 5, user terminal is following from the flow process that the 3GPP network switches to the general employing of the non-3GPP network of untrusted:
(1) user terminal receives the MBMS service through the 3GPP network.
(2) user terminal is found the available non-3GPP network of untrusted, and is linked in this network through certain mode decision scheme decision, begins to switch thereupon.
(3) user terminal can be known the IP address of the ePDG that it need connect through context, thereby gets in touch with its foundation.EPDG and BM-SC carry out Signalling exchange, thereby user terminal is carried out authentication.
(4) after user terminal is authorized to, ePDG sends an IP address and gives user terminal, between user terminal and ePDG, sets up the IPsec tunnel simultaneously, and this tunnel is used for Signalling exchange.
(5) user terminal sends the request of activation to add multi-broadcast group to ePDG.
(6) do not send register requirement if ePDG also sets up beared information to BM-SC, carry to set up.
(7) BM-SC update MBMS bearer context will be set up relevant information with carrying simultaneously and send to ePDG through register response.
(8) ePDG informs user terminal it successfully adds multi-broadcast group and bearer related information is provided through activating response signaling.
(9) accomplishing carrying sets up.
(10) BM-SC begins the MBMS transmission data.
(11) if after user terminal is accomplished switching, do not had user terminal to receive this service again in the former 3GPP Access Network, then trigger the release of 3GPP Internet resources.
Fig. 6 shows the user terminal of accepting the multimedia broadcast multicast service switches back the 3GPP network from non-3GPP network exemplary sequence diagram.As shown in Figure 6, user terminal is following from the flow process that non-3GPP network switches to the general employing of 3GPP network:
(1) user terminal is receiving the MBMS service through non-3GPP network.
(2) user terminal is found available 3GPP universal terrestrial access network (UTRAN) or GSM EDGE wireless access network (GERAN), and is linked in this network through certain mode decision scheme decision, begins to switch thereupon.
(3) user terminal sends attach request and gives GPRS serving GPRS support node (SGSN).
(4) SGSN carries out Signalling exchange through Gateway GPRS Support Node (GGSN) with BM-SC, and BM-SC carries out authentication to user terminal.
(5) after the successful authentication, SGSN is with the executing location refresh routine.If this user terminal is first user terminal that gets into this UTRAN network in the specific multi-broadcast group; Then 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 gets into this UTRAN network in the multi-broadcast group, then since carrying itself set up and need not to set up once more.
(6) user terminal receives the MBMS data through the UTRAN system.
(7) if do not had to receive the user terminal of same service in the former non-3GPP network then discharged its resource.
In above description, to each step, enumerated a plurality of instances, though the inventor indicates instance associated with each other as much as possible, this does not also mean that must there be corresponding relation in these instances according to corresponding label.As long as selected instance do not have contradiction between given condition, can in different steps, select the not corresponding instance of label to constitute the corresponding techniques scheme, such technical scheme also should be regarded as within the scope of the invention involved.
Should be noted in the discussion above that in above description,, show technical scheme of the present invention, but be not intended that the invention be limited to above-mentioned steps and cellular construction only with the mode of example.Under possible situation, can adjust and accept or reject step and cellular construction as required.Therefore, some step and unit are not the necessary element of overall invention thought of embodiment of the present invention.Therefore, technical characterictic essential to the invention only is subject to the minimum requirements that can realize overall invention thought of the present invention, and does not receive 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 can carry out various other change, replacement and interpolations under the situation that does not break away from the spirit and scope of the present invention.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited accompanying claims.
Claims (15)
1. device that is used for providing multimedia broadcast multicast service at heterogeneous network, said heterogeneous network comprises a plurality of networks that have the heterogeneous networks structure, adopt different communication protocol, said device comprises:
The signaling receiving element, be used to receive from user terminal the multimedia broadcast multicast service carrier of gateway of the network that will switch to set up request;
Signaling produces and transmitting element, is used for producing and sending control signaling, and said control signaling is used between said device and said gateway, setting up the multimedia broadcast multicast service carrier; And
Multimedia broadcast multi-cast service data provides the unit, and being used for provides synchronous multimedia broadcast multi-cast service data on the multimedia broadcast multicast service carrier of being set up.
2. device according to claim 1 also comprises: the authentication unit is used for the user terminal of heterogeneous network is carried out authentication.
3. device according to claim 2 also comprises: Charging Detail Record unit is used for the multimedia broadcast multicast service that user terminal is accepted.
4. device according to claim 1 is characterized in that: insert the 3GPP network if accept the user terminal of multimedia broadcast multicast service, said device is directly set up being connected of chain of command and user plane with MBMS gateway or GGSN.
5. device according to claim 4 wherein, defines reference point: SGmb and SGi-mb between said device and MBMS gateway, SGmb provides the Signalling exchange on the chain of command, and SGi-mb provides the user side data transmission; Between said device and GGSN, define reference point: Gmb and Gi, Gmb provides the Signalling exchange on the chain of command, and Gi provides the user side data transmission.
6. device according to claim 1 is characterized in that: insert the reliable non-3 GPP network if accept the user terminal of multimedia broadcast multicast service, said device is directly set up being connected of chain of command and user plane with broadcast service Node B SN.
7. device according to claim 6 wherein, defines reference point: SG-bcmcs and SGi-bcmcs between said device and BSN, SG-bcmcs provides the Signalling exchange on the chain of command, and SGi-bcmcs provides the user side data transmission.
8. device according to claim 1 is characterized in that: if the user terminal of multimedia broadcast multicast service inserts the non-3GPP network of untrusted, said device is directly set up being connected of chain of command and user plane with evolution packet data gateway ePDG.
9. device according to claim 8, wherein, said ePDG is suitable for from said device receiving multimedia broadcast multicast service data and control signaling, and transmission and the management of responsible MBMS business in the untrusted non-3 GPP access network.
10. device according to claim 9 wherein, defines reference point: Gi and Gmb between said device and ePDG, Gmb provides the Signalling exchange on the chain of command, and Gi provides the user side data transmission.
11. device according to claim 1; Wherein, Storage multimedia broadcast multicast user's context in the downstream node of said device, said device and user terminal, storage multimedia broadcast multicast bearer context in the downstream node of said device and said device.
12. device according to claim 11, wherein, said multimedia broadcast multicast user's context comprises: the IP address of network identifier, same service content identifier, ip multicast address and said device or the ePDG in heterogeneous networks; Said multimedia broadcast multicast bearer context comprises: the tabulation of the downstream node of said device in the Access Network of heterogeneous networks.
13. a heterogeneous network comprises:
A plurality of networks have the various network structure, adopt different communication protocol; And
According to each described, as to be used for providing multimedia broadcast multicast service device in the claim 1 to 12 at heterogeneous network.
14. method that the user terminal of accepting the multimedia broadcast multicast service switches in heterogeneous network; Said heterogeneous network comprises a plurality of networks that have the heterogeneous networks structure, adopt different communication protocol; Also comprise the device that is used to provide the multimedia broadcast multicast service, said method comprises:
User terminal via to switch to, with the gateway of former service network various network, to said device requests multimedia broadcast multicast service;
Said device responds via the services request of said gateway to user terminal, and the services request of user terminal is accepted in expression;
Between said device and said gateway, set up the multimedia broadcast multicast service carrier;
Between user terminal and said gateway, setting up the communication that is used for the transmitting multimedia broadcast multicast service is connected; And
Discharge the resource that is used for providing the multimedia broadcast multicast service in the former service network to user terminal.
15. method according to claim 14 also comprises: user terminal is carried out authentication by said device.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488409A (en) * | 2015-08-29 | 2017-03-08 | 华为技术有限公司 | A kind of unicast sends the method for broadcasting multicast data, apparatus and system |
| WO2018228165A1 (en) * | 2017-06-14 | 2018-12-20 | 华为技术有限公司 | Data transmission method and device |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110351670A (en) * | 2012-10-25 | 2019-10-18 | 华为技术有限公司 | Trunked communication system, cluster server, communication device and medium |
| US10992717B2 (en) | 2012-10-25 | 2021-04-27 | Huawei Technologies Co., Ltd. | Trunking communication system, trunking server, access network and trunking communication method |
| CN110351670B (en) * | 2012-10-25 | 2021-12-31 | 华为技术有限公司 | Cluster communication system, cluster server, communication device, and medium |
| US11671466B2 (en) | 2012-10-25 | 2023-06-06 | Huawei Technologies Co., Ltd. | Trunking communication system, trunking server, access network and trunking communication method |
| CN106488409A (en) * | 2015-08-29 | 2017-03-08 | 华为技术有限公司 | A kind of unicast sends the method for broadcasting multicast data, apparatus and system |
| 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 |
| WO2018228165A1 (en) * | 2017-06-14 | 2018-12-20 | 华为技术有限公司 | Data transmission method and device |
| CN109089288A (en) * | 2017-06-14 | 2018-12-25 | 华为技术有限公司 | A kind of method and apparatus of data transmission |
| CN109089288B (en) * | 2017-06-14 | 2020-12-25 | 华为技术有限公司 | Data transmission method and equipment |
| CN115361657A (en) * | 2018-01-03 | 2022-11-18 | 交互数字专利控股公司 | Multicast and broadcast services in 5G networks for IoT applications |
| CN115361657B (en) * | 2018-01-03 | 2023-09-01 | 交互数字专利控股公司 | Multicast and broadcast services in 5G networks for IoT applications |
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