CN104967974B - Method and apparatus for reliable broadcast/multicast service - Google Patents
Method and apparatus for reliable broadcast/multicast service Download PDFInfo
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- CN104967974B CN104967974B CN201510404385.2A CN201510404385A CN104967974B CN 104967974 B CN104967974 B CN 104967974B CN 201510404385 A CN201510404385 A CN 201510404385A CN 104967974 B CN104967974 B CN 104967974B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W60/00—Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
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- Computer Networks & Wireless Communication (AREA)
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- Mobile Radio Communication Systems (AREA)
Abstract
A kind of method for being used to operate IP-based multimedia broadcast/multicast service the present invention provides user terminal (20).The described method includes: storage (S3) information relevant to user service registration, the user service registration is to establish using for broadcast/multicast service to realize that the IP of the connection between user terminal (20) and service node (40) is connect (such as packet data protocol PDP Context) Lai Zhihang (S2).The information is a kind of information that at least some of any user service for being lost influence by IP connection user service can be made to re-register (S7).In one embodiment, multimedia broadcast/multicast service is 3GPP multimedia broadcast/multicast service MBMS, and user terminal (20) is user equipment (UE), and service node (40) is broadcast/multicast service center BM-SC.In another embodiment, multimedia broadcast/multicast service is Open Mobile Alliance broadcast OMA BCAST service, and user terminal (20) is terminal, and service node (40) is OMA BCAST subscription management BSM node.
Description
The application be the applying date be on 2 26th, 2008, application No. is 200880126687.6 Chinese invention patent Shens
The please divisional application of " method and apparatus for reliable broadcast/multicast service ".
Technical field
The present invention relates to the methods and apparatus used in a communication network, and in particular to takes including multi-medium broadcast/group broadcast
The case where business.
Background technique
MBMS (multimedia broadcast/multicast service) is the feature in 3GPP network, can be by the multicast on 3G network/wide
Transmission is broadcast to provide service.When a large number of users is interested in same services simultaneously (such as in mobile TV), this helps to save
About Internet resources.It is transmitted since identical multicast/broadcast can be received by multiple users, it is achieved that it is resource-effective, also,
The amount of used Internet resources is independent of receiver number (being then such case for unicast services).
Multimedia broadcast/multicast service has become generally, since mobile hand-held device has become able to via wireless
Network receiving multimedia content, this becomes more universal.
Multimedia broadcast multicast services (MBMS) [3GPP-23246- is introduced in the land UMTS wireless access (UTRA)
720-MBMS-architecture、3GPP-22146-820-MBMS-stage1、3GPP-25346-730-MBMS-stage2]
The technology of the optimization transmission for MBMS carrying service is provided, such as point-to-multipoint transmission, point-to-multipoint (PTM) and point-to-point
(PTP) the selectivity merging and transmission mode selection between carrying.MBMS logical transmission channel is defined, and is mapped to object
Manage channel.Basic logic channel is as follows:
(a) MBMS point-to-multipoint control channel (MCCH): the logic channel is used between network and user equipment (UE)
Control the PTM downlink transmission of plane information.
(b) MBMS point multipoint message traffic channel (MTCH): the logic channel is for the user plane letter between network and UE
The PTM downlink transmission of breath.
(c) MBMS point-to-multipoint scheduling channel (MSCH): the logic channel is used for MBMS service between network and UE and transmits
The PTM downlink transmission of scheduling.
As Fig. 1 of attached drawing is schematically shown, MBMS framework is vertically divided by two layers: MBMS carrying service layer according to function
14 and MBMS user service layer 12.Key node in MBMS is BM-SC (broadcast/multicast service center) 4, BM-SC 4 to UE
(user equipment) 2 sends MBMS service data.BM-SC 4 is located at after GGSN (Gateway GPRS Support Node) 10.UE 2 via
Wireless access network (RAN) 6 and Serving GPRS Support Node (SGSN) 8 are communicated with GGSN 10.
MBMS user service layer 12 is defined between BM-SC 4 and UE 2.MBMS user service (is advised in TS 26.346
It is fixed；Multimedia Broadcase/Multicast Service(MBMS)；Protocols and codecs；Http: //
Www.3gpp.org/ftp/Specs/html-info/26346.htm) by the actual content of MBMS service (such as move TV section
Mesh) and relevant agreement and codec etc. composition.
MBMS is safely (see TS 33.246；MBMS security；Http:// www.3gpp.org/ftip/Specs/
Html-info/33246.htm) it is also defined in MBMS user service layer 12.It defines security function, and security function can be with
Authorized user is only limited in for that will service.
MBMS carrying service 14 is (see TS 23.246；MBMS bearer service；Http:// www.3gpp.org/
Ftp/Specs/html-info/23246.htm) provide be used for transmission MBMS user service multicast/broadcast transmission basis set
It applies and resource, such as multicast/broadcast distribution tree.Other than UE 2 and BM-SC 4, GGSN 10, SGSN 8 and RAN 6 are
A part of MBMS carrying service 14.
MBMS carrying service 14 is further divided into both of which: multicast pattern and broadcast mode.Between both modes
Difference approximately as.
Multicast pattern service is only transmitted in there are the region of interested UE 2.Multicast mould is used when UE 2 wants to receive
When the MBMS service that formula provides, UE 2 sends IGMP (Yin Te to GGSN 10 by default PDP (packet data protocol) context
Net igmpinternet) request is added.This will lead to on the path between UE 2 and BM-SC 4 each network node (including
UE 2 and BM-SC 4) creation MBMS UE context, and multicast distribution tree is updated accordingly (see the clause of TS 23.246
8.2).In brief, in MBMS carrying rank, network aware UE.
In general, broadcast mode service is transmitted in a particular area, and it is unrelated with the presence or absence of UE 2.When UE 2 wants
When receiving the MBMS service provided using broadcast mode, its own is locally configured in UE 2, to receive the transmission, and not
In carrying rank related network (see the clause 8.12 of TS 23.246).In brief, in MBMS carrying rank, network is not known
Know UE 2.
MBMS safety is independently of multicast and broadcast mode, because it is the function of MBMS user service layer 12.It means that
Multicast pattern and broadcast mode service can be protected safely using MBMS.When UE 2 wants to receive shielded service,
Other than the movement of above-mentioned carrying rank, UE 2 is registered also on MBMS user service layer 12 to BM-SC 4, required to obtain
MBMS service key.
In MBMS safety, UE 2 is using PDP Context (PDP Context provide to UE 2 IP connection) come to MBMS user
Service registration and cancellation.Identical PDP Context also is used to push MBMS service key (MSK) update message by BM-SC 4
To UE 2.This is possible, because BM-SC 4 stores the IP of UE 2 when receiving registration message from UE 2 on PDP Context
Address.This point is diagrammatically illustrated in Fig. 2 of attached drawing.
Applicants have realised that, in fact it could happen that a kind of situation, wherein delete for some reason PDP Context (or by
Another PDP Context is replaced), this will imply that, the associated IP address of UE 2 will be no longer valid, as attached drawing Fig. 3 in show
What meaning property indicated.
However, BM-SC 4 does not know that the IP address is no longer valid, and will continue to send MBMS to the IP address being not present
Service key (MSK) message.These MSK message will be dropped in GGSN 10, because GGSN 10 cannot be identified in message
Destination IP address.
The possible cause that PDP Context is removed or replaced is shown in 24.008 6.1.3.4.2 chapters and sections of TS: " rule deactivates
Work ", " network failure ", " operator is determining to be forbidden " or " request reactivates ".User not to be noted may delete or replace
It changes, because PDP Context is only used for background key management, actual MBMS content is carried by MBMS and sent.
Therefore, UE 2 may receive MBMS service key not in time, these service key are needed for decryption service；Or
Person, if the IP address is quickly distributed to another UE 2, MBMS service key message may be sent to the UE 2 of mistake
(MBMS safety will not be destroyed by sending service key to the UE of mistake, because service key is come using the dedicated high-rise key of UE
Encryption).
Current safety standard (TS 33.246) regulation, UE 2 can be infused from the key identifier of received MBMS content
It anticipates and does not have correct MSK to it with the service of decrypting.This can trigger UE 2 and fetch new MSK from BM-SC 4.For this purpose, if
UE 2 does not have any effective PDP Context, the then new PDP Context that UE 2 will must be set up.The problem of mechanism, exists
In some real time contents using the MSK encryption lacked may have been received in UE 2.This will imply that, fetch simultaneously in UE 2
Before correct MSK is installed, service disruption (such as in mobile TV program) will occur.
Currently, for multicast pattern and broadcast mode, the loss of PDP Context is handled in different method.
Current method of the description for multicast pattern first.In this scene, as defined in 23.246 clause 6.1 of TS
, UE 2, SGSN 8, GGSN 10 and BM-SC 4 have been stored establish multicast distribution tree needed on the dedicated MBMS UE of UE
Hereafter.The MBMS UE context is to carry grade activation using MBMS to establish.
In addition, UE 2 and SGSN 8 have stored PDP Context, (NSAPI or Network Layer Service of so-called link are accessed
Point identifier) with being associated between MBMS UE context, as schematically shown in Fig. 4 of attached drawing.
If UE 2, SGSN 8 or GGSN 10 delete PDP Context, SGSN 8 will start multicast services deactivation
Process is to delete the MBMS UE context in all nodes (see 23.246 clause 8.7 of TS).
The multicast services deactivation process will also reach BM-SC 4, and then, BM-SC 4 will be appreciated by for the UE's 2
MBMS carrying service (and MBMS UE context) has deactivated, and then BM-SC 4 will assume: the UE 2 is directed to, with deactivation
The relevant MBMS user service of MBMS carrying service be also deactivated.Then, BM-SC4 knows that it should not send to UE 2 again
MBMS service key updating message.
The multicast services deactivation process will also reach UE 2, and user may notice that MBMS service failure.Certainly, this
Mean service disruption.Then, user can re-initiate MBMS user service (this will imply that the new PDP or more of activation at this time
Text and again activation MBMS carrying service).
Turning now to the current method for the problem that broadcast mode, broadcast mode is different, because carrying rank in MBMS,
Network is unaware of UE 2, this is because the not stored dedicated MBMS UE context of UE in SGSN 8, GGSN10 or BM-SC 4.Cause
This, network does not know that specific PDP Context is for MBMS key management.Need to consider two kinds of different situations: (a) UE is initiated
PDP Context is deleted；And the PDP Context deletion that (b) network is initiated.
In the clause 6.3.2.1A of TS 33.246, the case where PDP Context that UE is initiated is deleted has been covered, it should
Clause regulation, before UE 2 is nullified from MBMS user service, UE 2 should not delete PDP Context (for key pipe
Reason).It further provides that, PDP Context should be interactive or backstage QoS (service quality) classification in the 6.3.1 of TS 33.246,
These known classifications have compared with longevity period.(whether PDP Context still may be accidentally deleted (such as passing through user action) still
It is to be determined).
However, the PDP Context that non-overlay network is initiated in Current specifications is deleted.Although PDP Context can have
Compared with longevity period, but PDP Context still may for some reason (such as network failure) by network (i.e. SGSN 8 or GGSN
10) it deletes.In this case, BM-SC 4 will be unaware of that UE IP address is no longer valid, it will continue to the IP being not present
Location sends MBMS service key (MSK) message, as indicated in Fig. 3 and as described above.This is a problem, because broadcasting
In mode, intermediate node (i.e. SGSN 8 and GGSN 10) is unaware of the PDP Context of deletion for MBMS, therefore they may
It is not indicated to BM-SC 4 yet.Therefore, UE 2 cannot receive required key in time, use since UE 2 cannot decrypt MBMS
Family service, therefore for UE 2, service will be interrupted.
It is expected that solving the problems, such as this.
Summary of the invention
According to the first aspect of the invention, one kind is provided in IP-based multimedia broadcast/multicast service with effect
Family terminal or equipment for user terminal.The equipment include: for storing the device for registering relevant information to user service,
The user service registration is to establish using for broadcast/multicast service to realize the connection between user terminal and service node
IP connection be performed, the information, which can make to be lost at least some of any user service influenced by IP connection, to be used
Family service re-registers；For the loss in response to noticing established IP connection, new IP connection is established, or selection is another has
Imitate IP connection, come replace loss IP connection device；And it re-registers by described for using stored information
The device of at least some of any user service influenced user service is lost, described re-register is using replacement IP connection
It is performed.
The equipment includes: for establishing IP connection, to register broadcast/multicast service and carry out for broadcast/multicast service
The device of service key management between user terminal and service node.
The equipment includes: the device for monitoring the loss of IP connection.
IP connection includes packet data protocol PDP Context.
Multimedia broadcast/multicast service is 3GPP multimedia broadcast/multicast service MBMS, and user terminal is user equipment
UE, service node are broadcast/multicast service center BM-SC.
IP connection is to be grouped via service universal grouping wireless serving GPRS support node SGSN in user terminal and gateway general
It is established between radio service support nodes GGSN.
Multimedia broadcast/multicast service is Open Mobile Alliance broadcast OMA BCAST service, and user terminal is terminal, clothes
Business node is OMA BCAST subscription management BSM node.
The equipment includes: the new IP address for sending user terminal to service node, so that service node is for passing through
Replacement IP connects the device that key message is sent to user terminal.
The key message is MBMS service key MSK message.
The key message is OMA BCAST long term keys message LTKM.
The loss of IP connection is caused by network failure or other reasons.
According to the second aspect of the invention, a kind of user terminal is provided to take for IP-based multi-medium broadcast/group broadcast
The method of business.The described method includes: relevant to the user service registration information of storage, it is using being directed to that the user service, which is registered,
Broadcast/multicast service is established to realize that the IP connecting between user terminal and service node connection is performed, the information
At least some of any user service for being lost influence by IP connection user service can be made to re-register；In response to paying attention to
To the loss for the IP connection established, new IP connection, or another effective IP connection of selection are established, to replace the IP connection of loss；
And it is re-registered using the information stored by least some of any user service lost and influenced user
Service, described re-register is performed using replacement IP connection.
This method comprises: IP connection is established, to register broadcast/multicast service and carry out user for broadcast/multicast service
Service key management between terminal and service node.
This method comprises: the loss of monitoring IP connection.
The method is relatively executed this method comprises: each of connecting with multiple this IP.
According to the third aspect of the invention we, a kind of program is provided, for controlling equipment to execute according to the present invention second
The method of aspect.
According to the fourth aspect of the invention, a kind of storage medium is provided, program according to a third aspect of the present invention is included.
The embodiment of the present invention at least one of has the following advantages that:
In the case where the PDP Context for key management is deleted suddenly, it is ensured that shielded MBMS user's clothes
The continuity of business
BM-SC is avoided to send key management messages to the IP address being not present
Although the embodiment of the present invention solves the problems, such as that (wherein BM-SC will be noted that PDP Context in multicast pattern
Lose, and it can also stop send MSK message) and broadcast mode (wherein BM-SC will not notice the PDP or more of loss
Text will be attempted unnecessarily to send MSK message) in slightly difference, but according to the solutions of the embodiments of the present invention for multicast and
Broadcast mode is effective, because the effect of the embodiment of the present invention is to make fast reaction to the PDP Context of loss.
Detailed description of the invention
Fig. 1, it is discussed above, diagrammatically illustrate MBMS user service and MBMS carrying service；
Fig. 2, it is above also to discuss, it diagrammatically illustrates through PDP Context and sends MSK message；
Fig. 3, it is above also to discuss, it diagrammatically illustrates and how to delete PDP Context and MSK message no longer reaches UE；
Fig. 4, it is above also to discuss, diagrammatically illustrate PDP Context and MBMS UE context in MBMS multicast pattern
Relationship；
Fig. 5 A and 5B include to illustrate the flow chart for the step of executing in MBMS embodiment of the invention；
Fig. 6 diagrammatically illustrates the component for realizing the user equipment for the step of present invention is to execute Fig. 5 A and 5B；
Fig. 7 is the schematic diagram that how BM-SC sends MSK message using new PDP Context in an embodiment of the present invention；
And
Fig. 8 A and 8B include to illustrate the flow chart for the step of executing in OMA BCAST embodiment of the invention.
Specific embodiment
The embodiment of the present invention is described referring now to Fig. 5 A, 5B, 6 and 7.Fig. 5 A and 5B include to illustrate of the invention
The flow chart for the step of being executed in embodiment by UE 20, SGSN 80, GGSN 100 and BM-SC 40, and Fig. 6 is schematically shown
The component of the UE 20 of the step of for executing Fig. 5 A and 5B.
In step S1, PDP Context is established to realize the connection between UE 20 and BM-SC 40；For this purpose, UE 20 is used
PDP Context establishes part 22 to establish PDP Context.PDP Context is established between UE 20 and GGSN 100, thus real
The connection between UE 20 and BM-SC 40 by PDP Context is showed.During executing step S1, with distributing IP to UE 20
Location.
In step S2, user determines to register various user services, in response, UE 20 by PDP Context come
Various MBMS user service registrations are executed, register user service using user service registration part 24；These user services note
Volume will be carried out usually whithin a period of time.In BM-SC 40, UE 20 is registered as the receiver of these user services, from IP
It is grouped the IP address for retrieving UE 20 in source address and stores the MSK key PUSH message for being used for future.In this regard, BM-SC 40 is also
Using PDP Context come to UE 20 push MSK message, as TS33.246 6.3.2.1A in define and in the step S4 of Fig. 5 A
Middle expression.
UE 20 is tracked PDP Context and is infused in step s 2 using the MBMS user service that PDP Context executes
Volume, stores that information in USI user service information storage section 25 that (or alternatively, being stored in UE 20 can visit in step s3
The remote storage location asked).The information for example indicates user service ID and the PDP for registering user service in a tabular form
The hereafter relationship between (NSAPI).
In step S5, what UE 20 using PDP Context availability checked part 26 to check or monitor PDP Context can
It (is stored in storage section 25 for the information of the PDP Context) with property.If UE 20 determines that the PDP Context is still available,
Then UE 20 continues to execute the inspection of step S5.The inspection can be executed in various ways: for example, can be at regular intervals
Come the message for executing inspection or UE 20 can wait PDP Context to be instructed no longer available.UE 20 is it can be found that network is initiated
PDP Context delete, (the General Packet Radio as described in 9.2.4.2 and 9.2.4.3 in TS 23.060
Service(GPRS)；Service description http://www.3gpp.org/ftp/Specs/html-info/
23060.htm)。
If UE 20 notices that PDP Context has been lost really, in step s 6, part 22 is established in UE20 use
It establishes and activates new PDP Context；During the process, new IP address is distributed to UE 20.Then, make in step S7, UE 20
With registration part 24, using the new PDP Context established in step S6 come to all impacted MBMS user services (or its son
Collection) execute re-register.(in the case where MBMS multicast pattern, this, which will lead to, activates MBMS carrying service for user, still
This is transparent for safety approach.)
Step S7 also provides the new IP address of UE 20 to BM-SC 40, this allows 40 use of BM-SC and new PDP or more
The relevant new IP address of text continues to send MBMS service key (MSK) message to UE 20, as shown in step S8 and in UE by
Receiving portion 28 is executed to receive MSK message.In this manner it is achieved that UE 20 can be in the case where not interrupting key management
Enjoy MBMS user service.
Alternately, new PDP Context is not activated, but if there is other effective PDP Contexts are available, then 20 UE
It is configurable to using one of these PDP Contexts.
The embodiment of the present invention, which is suitable for broadcast and multicast pattern, the mechanism for multicast pattern being previously proposed, only to be allowed
PDP context deactivation is notified to BM-SC.
Above-described embodiment is described in the environment of MBMS, it can be appreciated that, identical concept can be applied to it
In his comparable environment.For example, the embodiment of the present invention can be also used for Open Mobile Alliance (OMA) mobile broadcast (BCAST)
Scene；OMABCAST is the specification for mobile TV and video-on-demand service.
Above-mentioned embodiment relevant to MBMS can be readily adapted to provide corresponding scheme in OMA BCAST environment, figure
8A and 8B illustrates the operation of OMA BCAST alternative embodiment of the invention.It is clear that OMA process is equivalent on the whole
MBMS process, only message is different with the title of node.It therefore, there is no need to explain in detail OMA BCAST embodiment, it is only necessary to infuse
Anticipate following difference: the UE of MBMS is referred to as terminal in OMA BCAST；The BM-SC of MBMS is referred to as OMA in OMA BCAST
BSM (BCAST subscription management)；The MSK message of MBMS is referred to as LTKM (long term keys message) in OMA BCAST；And
The user service registration request of MBMS is referred to as registration request in OMA BCAST.
Remember these difference, those skilled in the art are readily able to realize OMA based on the description above with respect to MBMS
BCAST embodiment.OMA use PDP Context identical with MBMS is connected to lower layer IP and connect, that is, is applicable in these specifications
Same reference.The OMA detail of registration and key management can obtained from www.openmobilealliance.org
It is described in following specification documents: " Mobile Broadcast Services " OMA-TS-BCAST_Services-V1_0-
20080103-D；And " Service and Content Protection for Mobile Broadcast Services "
OMA-TS-BCAST_SvcCntProtection-V1_0-20071218-D。
It will recognize, the operation of one or more said modules can be controlled by the program operated on the device or apparatus
System.This operation sequence can store on a computer-readable medium, or can for example (such as be mentioned from internet site with signal
What is supplied can downloading data signal) Lai Shixian.Appended claims should be interpreted to cover the note on operation sequence itself or carrier
Record or signal or other any forms.
Although the present invention has had been described with reference to particular embodiments above, it will be understood by those skilled in the art that not carrying on the back
Under the premise of from the scope of the present invention as defined in the appended claims, various changes, replacement and variation can be carried out.
For example, it will be readily appreciated by those skilled in the art that broadcast/multicast service is applicable not only to mobile network, similarly
Suitable for fixed network, and the present invention can be readily applied in this scene.In fixed, IP connection may not
Always PDP Context (as described in above with respect to MBMS and OMA BCAST).The present invention is suitable for user terminal (no matter MBMS UE
Or some other type of terminal of OMA BCAST terminal or user's operation) in any kind of network (no matter mobile or solid
It is fixed) in operation IP-based multimedia broadcast/multicast service (no matter MBMS service or OMA BCAST service or certain other this
The service of sample) ordinary circumstance.Based on method include: storage information relevant to user service registration, the user
Service registration is using establishing for broadcast/multicast service to realize user terminal and service node (no matter MBMS BM-SC is saved
Point or OMA BSM node or certain other corresponding node) between connection certain IP connection (no matter PDP Context or other)
It is performed.The information is that one kind can be such that at least some of any user service influenced by IP connection loss user takes
The information that business re-registers.
Claims (16)
1. one kind includes user terminal (20) in IP-based multimedia broadcast/multicast service or is used for user terminal (20)
Equipment, comprising:
Register the device (25) of relevant information for storing (S3) to user service, the user service registration is using being directed to
Broadcast/multicast service foundation is performed with realizing that the IP of the connection between user terminal (20) and service node (40) is connect,
The information can be such that at least some of any user service for being lost influence by IP connection user service re-registers；
For the loss in response to noticing established IP connection, (S6) new IP connection is established, or another effective IP of selection connects
Connect, come replace loss IP connection device (22)；And
It is re-registered for using stored information in any user service that (S7) is influenced by the loss at least
The device (24) of some user services, described re-register is performed using replacement IP connection.
2. equipment according to claim 1, comprising: for establishing (S1) IP connection, with registration (S2) broadcast/multicast service
And the device of the service key management between user terminal (20) and service node (40) is carried out for broadcast/multicast service
(22)。
3. equipment according to claim 1 or 2, comprising: for monitoring the device (26) of the loss of (S5) IP connection.
4. equipment according to claim 1 or 2, wherein IP connection includes packet data protocol PDP Context.
5. equipment according to claim 1 or 2, wherein multimedia broadcast/multicast service is 3GPP multimedia broadcasting/group
Service MBMS is broadcast, user terminal is user equipment (UE), and service node is broadcast/multicast service center BM-SC.
6. equipment according to claim 5, wherein IP connection is via service universal grouping wireless serving GPRS support node
What SGSN was established between user terminal and gateway general packet wireless service support node GGSN.
7. equipment according to claim 1 or 2, wherein multimedia broadcast/multicast service is Open Mobile Alliance broadcast
OMA BCAST service, user terminal is terminal, and service node is OMABCAST subscription management BSM node.
8. equipment according to claim 1 or 2, comprising: for sending the new IP address of user terminal to service node, with
Just service node is used to connect the device for sending key message to user terminal by replacement IP.
9. equipment according to claim 5, comprising: for sending the new IP address of user terminal to service node, so as to
Service node is used to connect device to user terminal transmission key message by replacing IP, wherein the key message is
MBMS service key MSK message.
10. equipment according to claim 7, comprising: for sending the new IP address of user terminal to service node, so as to
Service node is used to connect the device for sending key message to user terminal by replacement IP, wherein the key message is OMA
BCAST long term keys message LTKM.
11. equipment according to claim 1 or 2, wherein the loss of IP connection is caused by network failure.
12. a kind of method that user terminal (20) is used for IP-based multimedia broadcast/multicast service, which comprises
(S3) information relevant to user service registration is stored, the user service registration is using for broadcast/multicast service
It establishes to realize that the IP connecting between user terminal and service node connection is performed, the information can make to be connected by IP
At least some of any user service lost and influenced user service is connect to re-register；
In response to noticing the loss of established IP connection, (S6) new IP connection, or another effective IP connection of selection are established, is come
Replace the IP connection lost；And
Stored information is used to re-register (S7) by described and lose at least some of any user service influenced
User service, described re-register is performed using replacement IP connection.
13. according to the method for claim 12, comprising: establish (S1) IP connection, simultaneously with registration (S2) broadcast/multicast service
The service key management between user terminal (20) and service node (40) is carried out for broadcast/multicast service.
14. method according to claim 12 or 13, comprising: the loss of monitoring (S5) IP connection.
15. method according to claim 12 or 13, comprising: each of connect with multiple this IP and relatively to execute
The method.
16. a kind of computer-readable medium, comprising for controlling equipment to execute any one of 2 to 15 institute according to claim 1
The program for the method stated.
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