CN101232701A - Equipment and method for deactivating broadcast multicast business - Google Patents
Equipment and method for deactivating broadcast multicast business Download PDFInfo
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Abstract
The invention relates to the field of radio communication and discloses a method and device for deactivating broadcast and multicast services to facilitate correct de-activation after a roaming user uses MBMS service. In the invention, BM-SC of a visited network and a home network conduct joint verification as to whether the indicator suggesting that a roaming UE leaves broadcast and multicast service is valid through the alternation of BM-SC of the visited network and BM-SC of the home network. If BM-SC of the visited network provides the broadcast and multicast services where the UE leaves, BM-SC of the visited network will notify BM-SC of the home network that a UE context of the broadcast and multicast service should be deleted before or after BM-SC of the visited network deletes the UE context of the broadcast and multicast services.
Description
Technical field
The present invention relates to wireless communication field, particularly the broadcast group broadcast technology.
Background technology
3G (Third Generation) Moblie can provide than the more service of high data rate of second generation mobile communication, thereby supports the multiple business form.Such as, network services such as Internet are downloaded, browsed at a high speed to visual telephone, picture.Wherein have a class business features to be: can in wireless network, subscribe to simultaneously should business a plurality of users send information.Such as, send weather forecast, news film, sports tournament collection of choice specimens information etc.The characteristics of utilizing these business to send simultaneously, 3-G (Generation Three mobile communication system) has been introduced the notion of multicast/broadcast from Rel-6 (sixth version), can more effectively utilize air interface resource, and higher power system capacity is provided.
In the broadcasting/packet service, for an intermediate node, no matter its downstream comprises the node what expectations receive data, and its upstream node always sends a piece of data to this intermediate node; After this intermediate node is received data, the number of nodes that receives data according to its downstream expectation duplicates this data, and distribute this data to the node that each expectation of its downstream receives these data, like this, each bar branch of multicast/broadcast business data transmission tree all has only a piece of data to transmit, take a transfer resource, the transfer of data of root node and its downstream node also is like this.The distinctive points of multicast service and broadcasting service only is: multicast service only sends corresponding information to the user who has subscribed to some information, and the broadcasting service then user of all in wireless network sends information.As seen from the above description, provide identical information to a large number of users simultaneously, can greatly save Internet resources by multicast/broadcast is professional.
As shown in Figure 1, existing third generation partner program (3rd Generation PartnershipProject, be called for short " 3GPP ") in, support the wireless network architecture of broadcasting/packet service to comprise broadcast/multicast service center (BM-SC, Broadcast/Multicast-Service Centre), broadcast multicast service center (Broadcast-Multicast Service Centre, be called for short " BM-SC ") by Gmb interface or Gi interface and ggsn (Gateway GPRS SupportNode, be called for short " GGSN ") link to each other, a BM-SC can link to each other with a plurality of GGSN; GGSN links to each other by Gn/Gp interface and service universal grouping wireless business supporting node (Serving GPRS SupportNode is called for short " SGSN "), and a GGSN can link to each other with a plurality of SGSN; SGSN can pass through Iu interface and universal mobile telecommunications system grounding wireless access network (UMTS Terrestrial RadioAccess Network, be called for short " UTRAN ") link to each other, UTRAN is by Uu interface and subscriber equipment (User Equipment then, be called for short " UE ") link to each other, SGSN also can pass through Iu/Gb interface and GSM EDGE Radio Access Network (GSM/EDGE Radio Access Network, be called for short " GERAN ") link to each other, GERAN links to each other with UE by Um Interface then.Wherein, GGSN and SGSN belong to the node in the core net in the wireless network (Core Net is called for short " CN ").Simultaneously, a BM-SC also can link to each other with a plurality of BM-SC that belong to other PLMNs (Public Lands Mobile Network is called for short " PLMN "), thereby makes the UE that roams into other networks also can realize the MBMS business.
With network carrying on service of multimedia broadcast/multicast (MultimediaBroadcast/Multicast Service shown in Figure 1, be called for short " MBMS ") be example, BM-SC provides the multi-medium broadcast/group broadcast service for MBMS user, it can be used as an access point that is used for MBMS content delivery, mandate and initiation MBMS bearer service in PLMN, and can be used for scheduling and send the MBMS transmission.
UE need carry out the deexcitation flow process when withdrawing from MBMS, the UE context of MBMS business on the deletion network side interdependent node.
UE might use the MBMS business in home network, also might use the MBMS business in visited network, and the latter is called roaming scence again.With respect in home network, using the MBMS business, use the MBMS business comparatively complicated at visited network, because two kinds of scenes are arranged, the MBMS data that a kind of UE of being receives home network to provide by visited network, another kind is that UE directly receives the MBMS data that visited network provides.Also there is not at present disclosed flow process about under roaming scence, roaming UE being carried out deexcitation.
Summary of the invention
The technical problem underlying that each execution mode of the present invention will solve provides a kind of method and apparatus of broadcast multicast service deactivation, makes roamer's deexcitation correctly after using the MBMS business.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of method of broadcast multicast service deactivation, may further comprise the steps:
The broadcast multicast service center BM-SC of visited network receives when roaming user equipment UE leaves the indication of broadcasting multicast service, by with the interacting message of the BM-SC of the home network of this UE, verify the validity of this indication, if effectively then trigger the contextual flow process of deletion this broadcasting multicast service UE on UE and each network equipment.
Embodiments of the present invention also provide a kind of broadcast multicast service center equipment, comprising:
Receive the unit that roaming UE leaves the indication of broadcasting multicast service;
By with the interacting message of BM-SC of the home network of this roaming UE, the unit of the validity of checking indication;
Determining to trigger the unit of the contextual flow process of deletion this broadcasting multicast service UE on UE and each network equipment under the effective condition of indication.
The main effect of embodiment of the present invention is:
The BM-SC by visited network and the BM-SC's of home network is mutual, BM-SC by visited network and home network verifies that jointly roaming UE leaves indicating whether effectively of broadcasting multicast service, can make full use of the correctness that two information on the BM-SC guarantee checking, guarantee under correct prerequisite, to trigger the contextual flow process of deletion relevant broadcasts multicast service UE.Because in roaming promptly may be to provide broadcast and multicast service data by home network at present, also may be that visited network provides broadcast and multicast service data, the situation more complicated is so need work in coordination with the checking work of finishing by the MB-SC of visited network and home network.
Description of drawings
Fig. 1 is a wireless network architecture of supporting broadcasting/packet service among the existing 3GPP;
Fig. 2 is the MBMS service deactivation method flow chart according to first embodiment of the invention;
Fig. 3 is the MBMS service deactivation method flow chart according to second embodiment of the invention;
Fig. 4 is the MBMS service deactivation method flow chart according to third embodiment of the invention;
Fig. 5 is the BM-SC structural representation according to four embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Broadcasting multicast service has different titles in different systems, the MBMS with 3GPP is that example describes in the following embodiments.
First execution mode of the present invention relates to the MBMS service deactivation method.
In first execution mode, the business data flow of MBMS is provided by visited network, bearer service is that the BM-SC from visited network is created to UE's, and the BM-SC in the home network works when authorizing, thus the BM-SC of visited network goes up and the BM-SC of home network on all have the MBMS UE context of this UE.So in the deactivation process, should delete the MBMS UE context on the BM-SC in the visited network, delete the MBMS UE context of BM-SC in the home network again.Idiographic flow as shown in Figure 2.
Step 201:UE sends Internet Group Management Protocol (Internet Group Management Protocol by the PDP Context of acquiescence to GGSN, abbreviation " IGMP ") leaves (IGMP Leave) message, perhaps multicast monitoring discovery (Multicast Listener Discovery, be called for short " MLD ") leave (MLD Leave) message, thus leave a specific multicast service by the IP multicast address sign.Wherein, in the IPv4 system, use IGMP Leave message, and in the IPv6 system, use MLD Leave message.
Step 202:GGSN sends one for the BM-SC of visited network and leaves indication (LeaveIndication) message, its parameter comprises IP multicast address, APN (Access Point Name, be called for short " APN ") and international mobile station identity number (International Mobile Station Identity, be called for short " IMSI "), the multicast service by this IP multicast address sign is left in indication UE attempt.
Step 203: in case receive and leave Indication message, BM-SC in the visited network has verified that the corresponding effective MBMS business of this IP multicast address and this UE have been authorized to use this business, know that in addition this UE belongs to the roamer, this BM-SC sends for the BM-SC of UE home network and leave Indication message, its parameter comprises IP multicast address, APN and IMSI, the mutual Mz interface that passes through therebetween.The Mz interface is the interface that is used to transmit signaling between the BM-SC of the BM-SC of visited network and home network.
Step 204: in case receive and leave Indication message, the BM-SC of home network has verified that the corresponding effective MBMS business of this IP multicast address and this UE have been authorized to use this business, send a UE removal request (UE removal Request) message, its parameter comprises IP multicast address and IMSI, gives the BM-SC of visited network.The BM-SC of home network also can send a UE deletion request message by the BM-SC that directly gives visited network, triggers the deletion of MBMS UE context; The mutual Mz interface that passes through therebetween.By step 203 and step 204, the BM-SC of visited network and the BM-SC of home network have carried out alternately, roaming UE is left the indication of MBMS business and verify, guaranteed under correct prerequisite, to trigger the contextual flow process of deletion relevant broadcasts multicast service UE.If in step 203 or step 204, the indication that the BM-SC of visited network or the BM-SC of home network judgement roaming UE leave the MBMS business is invalid, then ignores this indication, not in the step of carrying out after this.
Step 205: in case receive the UE deletion request message, the BM-SC of visited network has verified the corresponding effective MBMS business of this IP multicast address, send a UE deletion request message, its parameter comprises IP multicast address, APN and IMSI, gives to produce the GGSN that leaves indication just now.APN will with the activation of service process in provide consistent.The BM-SC of visited network also can trigger the deletion of MBMS UE context by directly sending a UE deletion request message to GGSN.
In a single day step 206:GGSN receives the reason of UE deletion request message or GGSN oneself, GGSN sends a MBMS UE context deexcitation request (MBMS UE ContextDeactivation Request) message to SGSN, and its parameter comprises IP multicast address, APN and IMSI.IP multicast address, APN and IMSI have identified the MBMS UE context that need be deleted by SGSN together.Wherein, APN equals to go on foot the APN that receives the 205th.SGSN sends MBMSUE context deexcitation response (MBMS UE Context Deactivation Response) message to GGSN, responds it and has received MBMS UE context deexcitation request.
In a single day step 207:SGSN receives MBMS UE context deexcitation request message, the perhaps reason of SGSN oneself, SGSN sends a deexcitation MBMS context request (Deactive MBMS UEContext Request) message (its parameter comprises TI) and gives UE, the MBMS UE context that parameter TI sign need be deleted by UE.
Step 208:UE deletion MBMS UE context, and to a SGSN transmission deexcitation MBMS context response (Deactive MBMS UE Context Response) message, its parameter comprises TI).。
Step 209:, and be in linking status with RAN if UE is in PMM-Connected (the bag mobile management connects) state.SGSN can send MBMS UE to RNC and go linking request (MBMS UE De-Linking Request) message (its parameter comprises IP multicast address, APN and TMGI).RAN deletes MBMS UE context and returns MBMS UE to SGSN and go link response (MBMS UE De-Linking Response) message.
Step 210: if currently be used for the MBMS transmission data for this UE has distributed special-purpose Radio Resource, RAN discharges this Radio Resource.If currently distributed shared Radio Resource to be used for the MBMS transmission data, RAN may determine remaining UE is transferred in the middle of the private resource.
Step 211: accept the reason of message or SGSN oneself if received deexcitation MBMS context, SGSN sends deletion MBMS context request (DeleteMBMS Context Request) message that contains network layer Service Access Point Indicator (Network Layer ServiceAccess Point Identifier is called for short " NSAPI ") to having the contextual GGSN of MBMS UE.
The BM-SC of visited network given the MBMS UE context that sent deexcitation indication (Deactivation Indication) message authentication success deexcitation in step 212:GGSN deletion MBMS UE context.
Step 213: after the BM-SC in the visited network receives the deexcitation Indication message, deletion MBMS UE context.The position of steps A in Fig. 2 sends deexcitation Indication message MBMS UE context of having confirmed successful deexcitation to the BM-SC of home network.BM-SC in the home network receives deexcitation indication back deletion MBMS UE context, and confirms (Deactivation Confirmation) message for the deexcitation of BM-SC transmission in the visited network.The mutual Mz interface that passes through therebetween.BM-SC by visited network notifies the BM-SC of home network to delete MBMS UE context, can avoid staying on the BM-SC of home network useless broadcasting multicast service UE context.
Step 214: after the BM-SC in the visited network receives the affirmation message that the BM-SC in the home network sends, send an acknowledge message to GGSN.
Step 215: if no user receives this MBMS multicast service among the GGSN, and " the downstream node listing " of corresponding MBMS bearer context is empty, and GGSN sends a MBMS for the BM-SC in the visited network and goes register requirement (MBMS Deregistration Request) message.MBMS of BM-SC feedback in the visited network goes registration response (MBMS Deregistration Response) message, and with in its MBMS bearer context, the sign of this GGSN is deleted from " downstream node listing " parameter.
Step 216:GGSN sends deletion MBMS context response (DeleteMBMS Context Response) message to SGSN, the MBMS UE context of having confirmed deexcitation.SGSN deletion MBMS UE context.
Step 217: if no user receives this MBMS multicast service among the SGSN, and " the downstream node listing " of corresponding MBMS bearer context be empty, and SGSN goes register requirement (MBMS Deregistration Request) message to MBMS of GGSN transmission.MBMS of GGSN feedback goes registration response (MBMS Deregistration Response) message, and with in its MBMS bearer context, the sign of this SGSN is deleted from " downstream node listing " parameter.
Can know that by top explanation deactivation process can be triggered by UE, also can be by the BM-SC of GGSN, visited network, the BM-SC of home network or SGSN trigger and realize.
Second execution mode of the present invention also relates to the MBMS service deactivation method, and the flow process of this execution mode as shown in Figure 3.Second execution mode is similar substantially to first execution mode, step 201-217 is corresponding respectively with step 301-317 respectively, difference is, the BM-SC of visited network deleted local MBMS UE context in first execution mode before step 213, be the position of steps A, and the BM-SC of visited network delete local MBMS UE context again in second execution mode after step 313 is finished.This has embodied when technical solution of the present invention is implemented can certain flexibility.
The 3rd execution mode of the present invention also relates to the MBMS service deactivation method.
The application scenarios of the 3rd execution mode is different with first, second execution mode, the business data flow of MBMS is provided by home network, bearer service is that the BM-SC from home network is created to UE, and the BM-SC in the visited network has just played the effect that signaling is transmitted in the service authorization in the first time.Do not have MBMS UE context among the BM-SC of visited network, do not need deletion.Idiographic flow as shown in Figure 4.
Step 401-411 is identical with step 201-211 in first execution mode respectively, repeats no more herein.
In the step 412, GGSN deletion MBMS UE context sends deexcitation Indication message MBMS UE context of having confirmed successful deexcitation directly for BM-SC in the home network.After BM-SC in the home network receives the deexcitation Indication message, deletion MBMS UE context, and to acknowledge message of GGSN transmission.
In the step 413, if no user receives this MBMS multicast service among the GGSN, and " the downstream node listing " of corresponding MBMS bearer context be empty, and GGSN goes login request message for the MBMS of BM-SC transmission in the home network.MBMS of BM-SC feedback in the home network removes registration reply message, and with in its MBMS bearer context, the sign of this GGSN is deleted from " downstream node listing " parameter.
Step 414-415 is identical with step 216-217 respectively.
The 4th execution mode of the present invention relates to a kind of BM-SC, comprising:
Receive the first module that roaming UE leaves the indication of MBMS business;
By with the interacting message of BM-SC of the home network of this roaming UE, Unit second of the validity of checking indication;
Determining to trigger Unit the 3rd of the contextual flow process of this MBMSUE of deletion on UE and each network equipment under the effective condition of indication;
Delete the contextual Unit the 4th of corresponding MBMS UE; With
Send Unit the 5th of deexcitation Indication message to the BM-SC of home network.
BM-SC can be behind the deexcitation Indication message of receiving from GGSN, delete corresponding MBMSUE context earlier, BM-SC to home network sends the deexcitation Indication message again, perhaps, earlier the BM-SC to home network sends the deexcitation Indication message, deletes corresponding MBMS UE context again after waiting to receive the activation confirmation message that the BM-SC of this home network responds.
Above-mentioned Unit first to the 5th all is a logical block, can realize in different physical modules, also can realize in same physical module.Can there be various titles Unit first to the 5th, as long as but have above-mentioned functions and just can realize effect of the present invention, just belong to protection scope of the present invention.Being appreciated that function related in Unit first to the 5th all is not difficult to realize by known technology, is that present prior art does not realize purpose of the present invention by the inventive combination of these functions.
For example, Fig. 5 shows a kind of implementation of physical module, the function of first module is by the receiver module that receives external message and judge that the roaming judge module whether UE roams UE realizes jointly, validation verification in Unit second is realized in the validity judge module, finish jointly by receiver module and sending module with the function of the BM-SC interacting message of home network in Unit second, the triggering function of Unit the 3rd sends corresponding message by sending module and finishes, the function of Unit the 4th is finished by the context removing module, and the function of Unit the 5th sends the deexcitation Indication message by sending module and finishes.
Fig. 5 is an example, also may be by other different realization form, but all be partition or combination to first to the 5th Elementary Function, all belong to protection scope of the present invention.
In sum, in the embodiments of the present invention, the BM-SC by visited network and the BM-SC's of home network is mutual, BM-SC by visited network and home network verifies that jointly roaming UE leaves indicating whether effectively of broadcasting multicast service, can make full use of the correctness that two information on the BM-SC guarantee checking, guarantee under correct prerequisite, to trigger the contextual flow process of deletion relevant broadcasts multicast service UE.Because in roaming promptly may be to provide broadcast and multicast service data by home network at present, also may be that visited network provides broadcast and multicast service data, the situation more complicated is so need work in coordination with the checking work of finishing by the MB-SC of visited network and home network.
Provide if the broadcasting multicast service that UE left is the BM-SC by visited network, then the BM-SC of visited network will notify the BM-SC deletion broadcasting multicast service UE context of home network before or after deletion broadcasting multicast service UE is contextual.Thereby avoid on the BM-SC of home network, staying useless broadcasting multicast service UE context.
Provide if the broadcasting multicast service that UE left is the BM-SC by home network,, thereby successfully finish deexcitation work then directly by the BM-SC deletion broadcasting multicast service UE context of GGSN notice home network.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (10)
1. the method for a broadcast multicast service deactivation is characterized in that, may further comprise the steps:
The broadcast multicast service center BM-SC of visited network receives when roaming user equipment UE leaves the indication of broadcasting multicast service, by with the interacting message of the BM-SC of the home network of this UE, verify the validity of this indication, if effectively then trigger the contextual flow process of deletion this broadcasting multicast service UE on UE and each network equipment.
2. the method for broadcast multicast service deactivation according to claim 1 is characterized in that, the BM-SC of described visited network and the BM-SC of home network verify that by interacting message the step of described indication validity comprises following substep:
The BM-SC of described visited network verifies the validity of described indication, leaves Indication message if send effectively then to the BM-SC of described home network;
The BM-SC of described home network verifies the validity of described indication, if effectively then respond the UE deletion request message to the BM-SC of described visited network.
3. the method for broadcast multicast service deactivation according to claim 2 is characterized in that, described BM-SC verifies the validity of described indication by following steps:
Be authorized to use this business if broadcasting multicast service that described UE leaves is effective broadcasting multicast service and this UE, then described indication is effective.
4. according to the method for each described broadcast multicast service deactivation in the claim 1 to 3, it is characterized in that, when the broadcasting multicast service that described UE left is provided by the BM-SC of described visited network, need the contextual network equipment of the described broadcasting multicast service UE of deletion comprise the BM-SC of access network equipment, service universal grouping wireless business supporting node SGSN, ggsn GGSN, visited network and the BM-SC of home network.
5. the method for broadcast multicast service deactivation according to claim 4, it is characterized in that, when the broadcasting multicast service that described UE left is provided by the BM-SC of described visited network, delete the described broadcasting multicast service UE context among the BM-SC of the BM-SC of described visited network and home network by following steps:
Described GGSN sends the deexcitation Indication message to the BM-SC of visited network, the BM-SC of described visited network deletes described broadcasting multicast service UE context, BM-SC to described home network sends the deexcitation Indication message again, and the BM-SC of this home network deletes described broadcasting multicast service UE context; Perhaps,
Described GGSN sends the deexcitation Indication message to the BM-SC of visited network, the BM-SC of described visited network sends the deexcitation Indication message to the BM-SC of described home network, the BM-SC of this home network deletes described broadcasting multicast service UE context, BM-SC to this visited network sends the deexcitation acknowledge message again, and the BM-SC of this visited network deletes described broadcasting multicast service UE context.
6. according to the method for each described broadcast multicast service deactivation in the claim 1 to 3, it is characterized in that, when the broadcasting multicast service that described UE left is provided by the BM-SC of described home network, need the contextual network equipment of the described broadcasting multicast service UE of deletion to comprise the BM-SC of access network equipment, SGSN, GGSN and home network.
7. the method for broadcast multicast service deactivation according to claim 6, it is characterized in that, when the broadcasting multicast service that described UE left is provided by the BM-SC of described home network, described GGSN sends the deexcitation Indication message to the BM-SC of home network, and the BM-SC of this home network deletes described broadcasting multicast service UE context.
8. according to the method for each described broadcast multicast service deactivation in the claim 1 to 3, it is characterized in that, ignore this indication if the BM-SC of the BM-SC of visited network or home network judges that described indication is invalid.
9. a broadcast multicast service center equipment is characterized in that, comprising:
Receive the unit that roaming UE leaves the indication of broadcasting multicast service;
By with the interacting message of BM-SC of the home network of this roaming UE, verify the unit of the validity of described indication;
Under definite effective condition of described indication, trigger the unit of the contextual flow process of deletion this broadcasting multicast service UE on UE and each network equipment.
10. broadcast multicast service center equipment according to claim 9 is characterized in that, also comprises: the deletion respective broadcast contextual unit of multicast service UE and send the unit of deexcitation Indication message to the BM-SC of described home network;
Described equipment is behind the deexcitation Indication message of receiving from GGSN, delete respective broadcast multicast service UE context earlier, BM-SC to described home network sends the deexcitation Indication message again, perhaps, earlier the BM-SC to described home network sends the deexcitation Indication message, deletes respective broadcast multicast service UE context again after waiting to receive the activation confirmation message that the BM-SC of this home network responds.
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| CN100394827C (en) * | 2004-09-10 | 2008-06-11 | 上海贝尔阿尔卡特股份有限公司 | Anti-activating method and related apparatus for multi-media and multiple-broadcasting service |
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Application publication date: 20080730 Assignee: Apple Computer, Inc. Assignor: Huawei Technologies Co., Ltd. Contract record no.: 2015990000755 Denomination of invention: Equipment and method for deactivating broadcast multicast business Granted publication date: 20101027 License type: Common License Record date: 20150827 |
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