CN101247638A

CN101247638A - Method and device for multi-module terminal registering in heterogeneous network

Info

Publication number: CN101247638A
Application number: CNA2007100799048A
Authority: CN
Inventors: 闫文俊; 刘丽娜; 王珊珊; 肖晓玲
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-02-16
Filing date: 2007-02-16
Publication date: 2008-08-20
Also published as: WO2008101431A1

Abstract

The present invention discloses a multi-mode terminal register method in heterogeneous network and a device using the same. The method includes steps as follows: first internet element sends register message to HSS after receiving multi-mode terminal request; an indicator message is carried in register message for indicating HSS informing heterogeneous element to delete message relative to said multi-mode terminal, or indicating HSS keeping heterogeneous element message relative to said multi-mode terminal; HSS device processes corresponding register according with said indicator message. The invention also discloses a multi-mode terminal register method in heterogeneous network and a device using the same. When processing register by using the method, HSS can be various processed appointing to various register request, and unnecessary message is deleted in time at the same time realizing double-internet register. When processing register by using the method, terminal relative message of heterogeneous internet and heterogeneous element message can be deleted in time, and signaling cost can be saved.

Description

Multimode terminal is process registration and device in heterogeneous network

Technical field

The present invention relates to wireless communication field, relate in particular to multimode terminal process registration and device in heterogeneous network.

Background technology

3GPP (3G (Third Generation) Moblie standardization body) is after having introduced SAE/LTE (System Architecture Evolution/Long Term Evolution) technology, 3GPP communication system originally also will be in one time with new technology SAE/LTE and deposit, and in networking initial stage and significant period of time, to be in original 3GPP communication system and extensively cover, the SAE/LTE system realizes the state that focus covers.In order to use Internet resources, in original 3GPP system and SAE/LTE system, terminal all needs to initiate register flow path to network, the subscription data that network element HSS (Home Subscriber Server, home subscriber server) needs the record terminal with and current position information; After stopping using Internet resources, terminal is gone registration from network, and the terminal that HSS needs to be in login state identifies.

Register flow path in original 3GPP system (being the 2G/3G system) is as follows:

Terminal is initiated the attach attachment flow to SGSN (Serving GPRS Support Node, Serving GPRS Support Node) and is registered; SGSN sends update GPRS location message to HSS, upgrades location information of terminals among the HSS; HSS issues user's subscription data to SGSN, notifies the old SGSN deletion information relevant with this terminal, and with the SGSN of new SGSN replace old.

If terminal location moves to (route district information RAI changes) under the new SGSN, terminal is initiated RAU (Routing Area Update, Routing Area Update) flow process to new SGSN; New SGSN also needs to send update GPRS location message to HSS, is used to notify this variation; After HSS receives this message, carry out with above-mentioned registration process in identical operations, issue user's subscription data to new SGSN, notify the old SGSN deletion information relevant, with the SGSN of new SGSN replace old with this terminal.Terminal moves because of the position and initiates the RAU flow process, and SGSN to the flow process of HSS registration as shown in Figure 1.

Referring to Fig. 1, be the RAU schematic flow sheet in the prior art 3GPP system, concrete steps comprise:

1, terminal detects new wireless signal, carries out Idle state and switches, and sends the Routing Area Update request and carries out the position renewal to New SGSN.

2, New SGSN sends the SGSN context request to Old SGSN, gets the contextual information relevant with terminal.

3, Old SGSN returns the SGSN context response, the contextual information of carried terminal.

4, verification process.

5, New SGSN returns the affirmation of SGSN context, confirms to obtain the terminal contextual information.

6, New SGSN sends to GGSN and upgrades PDP (Packet Data Protocol, data pack protocol) context request, and PDP Context is upgraded in request, carries out user's face and upgrades.

7, GGSN returns and upgrades PDP and hereinafter respond.

8, New SGSN sends Update GPRS Location to HSS, carries out the position and upgrades.

9, HSS sends Cancel Location to Old SGSN, the notice Old SGSN deletion information relevant with terminal.

10, Old SGSN returns Cancel Location Ack, confirms.

11, HSS sends Insert Subscriber Data to New SGSN, inserts user contracting data to New SGSN.

12, New SGSN returns Insert Subscriber Data Ack, confirms to insert subscription data.

13, HSS returns Update GRPS Location Ack, confirms the position renewal.

14, SGSN returns Routing Area Update Accept to terminal, accepts Routing Area Update.

15, terminal is returned Routing Area Update Complete, finishes Routing Area Update.

What original 3GPP system (being the 2G/3G system) was interior goes register flow path as follows:

For the terminal that successfully is registered in the network, can withdraw from the 2G/3G network by the attachment removal detach flow process that terminal or network are initiated, SGSN will be after terminal exits network, and with relative information deletion, and by Purge MS message informing HSS the terminal of going to register is identified.The detach flow process of being initiated by terminal as shown in Figure 2.

Referring to Fig. 2, be the Detach schematic flow sheet that terminal in the prior art 3GPP system is initiated, concrete steps comprise:

1, terminal sends Detach Request message to SGSN, carries indication Switch Off, it indicates that whether terminal initiate the attachment removal flow process because of shutdown.

2a-2b, SGSN notify GGSN PDP Context deletion that will be relevant with terminal.

3, SGSN returns Detach Accept message to terminal, if terminal is initiated this attachment removal flow process because of shutdown, then SGSN does not send this DetachAccept message.

4, SGSN sends Purge MS message to HSS after having deleted the MM relevant with terminal (Mobility Management, mobile management) context and PDP Context.

5, HSS for to be eliminated at the 2G/3G net, identifies set with " MS PS Purged for GPRS " with terminal iidentification.As calling out or short message need be routed to the terminal that is identified the time, HSS can be considered as this terminal unreachable the processing when handling route requests.

HSS returns Purge MS Ack message to SGSN, confirms successfully.

The SAE/LTE network comprises Evolved RAN (evolution wireless access network), and MME/UPE (Mobility Management Entity/user entity), intersystem mobility anchor (anchor point between connecting system) module, wherein MME is the mobile management module, be responsible for the mobile management of chain of command, comprise the management of user's context and mobile status, distributing user temporary identity sign, safety function etc.; UPE is a user entity, is responsible for initiating paging for downlink data under the idle condition, and IP bearing parameter and the interior routing iinformation of network etc. are preserved in management; Intersystem mobility anchor is the anchor point between 2G/3G and the LTE connecting system, and for the 2G/3G network, its effect is equivalent to GGSN (Gateway GPRS Support Node, Gateway GPRS Support Node).

In the SAE/LTE system, the endpoint registration flow process is similar to the registration process in the original 2G/3G system: terminal need be initiated the attach attaching process to MME; MME sends update SAE location message to HSS; HSS notifies the old MME deletion information relevant with this terminal, with the MME of new MME replace old to the subscription data that new MME issues the user.

If terminal location moves under the new MME (TAI changes), terminal need be initiated more new technological process TAU of position to new MME so; New MME sends update SAE location message to HSS, is used to notify this variation; HSS notifies the old MME deletion information relevant with this terminal, and uses the MME of new MME replace old to the subscription data that new MME issues the user.

In the SAE/LTE system, the going of terminal goes registration process similar in register flow path and the original 2G/3G system: can withdraw from the SAE/LTE system by the attachment removal detach flow process that terminal or network are initiated, MME is after terminal exits network, with relative information deletion, and by going registration message (the Purge MS message that similar SGSN sends to HSS) notice HSS that the terminal of going to register is identified.

Dual-mode terminal can move switching between 2G/3G and SAE/LTE system.In handoff procedure, in 2G/3G and SAE/LTE system, dual-mode terminal all need carry out position register update at identical HSS, carries out user's face at identical intersystem mobility anchor and upgrades.The process of carrying out position register update in HSS is similar to above-mentioned position register update flow process.

Terminal moves between different RAT, and terminal can change and quarters at different networks and frequently cause network registration process, and frequent network registration process is a kind of great waste to eating dishes without rice or wine.For example, terminal enters the route district RA1 of 2G/3G, then to the SGSN of 2G/3G registration; When terminal enters the tracking area TA1 of SAE/LTE, then again to the MME of SAE/LTE system registration; When moving out TA1 again, terminal enters RA1, then again to the SGSN of 2G/3G registration.The purpose of registration is to make network paging still to bring a large amount of register command expenses to terminal in certain RAT.Therefore need carry out signaling to the switching between different RAT (Radio Access Technology wireless access technology) between SAE/LTE and 2G/3G network limits.

The influence of the registration of terminal under inter RAT to eating dishes without rice or wine that a kind of scheme realizes reducing idle (free time) pattern proposed in the specification document TR23.882 of 3GPP SAE.The thinking of this scheme is that terminal attach post-registration is to a kind of access network (2G/3G network or SAE/LTE system), terminal is registered to another access network after moving to another access network more afterwards, like this, terminal just has been registered to two kinds of connecting systems simultaneously, terminal moves and need not initiate any registration process at the corresponding registration area (RA or TA) of these two networks afterwards, and just initiates common position updating process.Endpoint registration to two kinds of connecting systems (MME of the SGSN of 2G/3G or SAE/LTE system) context of terminal is all arranged.

Referring to Fig. 3, for the attach of dual-mode terminal elder generation in the prior art moves to the schematic flow sheet of 2G/3G system again to the SAE/LTE system, concrete steps comprise:

1, terminal is attached to SAE/LTE, sends attach request message to MME.

2a-2b, MME initiate verification process to terminal, and the terminal return authentication responds to MME.

3a-3b, MME are registered to HSS, and promptly MME sends Update SAE Location position updating process to HSS.

4, MME/UPE affirmation terminal is adhered to successfully, distributes to terminal S-TMSI and S-RA, also has the information of default bearing IP.

5, terminal is changed RAT and initiate the RAU process behind 2G/3G, and the S-TMSI/S-RA that carries the MME distribution gives SGSN.

6a-6b, SGSN initiate SGSN Context Request message, the contextual information of requesting terminal to the MME of S-TMSI/S-RA correspondence; MME receives relevant context is sent to SGSN.

7, the verification process that may carry out;

8a-8b, SGSN are registered to HSS.

9, SGSN confirms context acceptance, may trigger the MME/UPE transferring data.

10, SGSN distributes to terminal with U-TMSI/U-RA and S-TMSI/S-RA, and terminal moves between U-RA and S-RA needn't initiate registration updating message.

11, RA upgrades and confirms.

Referring to Fig. 4, for terminal in the prior art is registered to the 2G/3G system earlier, move to the schematic flow sheet of SAE/LTE system again, this flow process is similar to flow process shown in Figure 3, is summarized as follows:

Terminal at first is attached to SGSN, and SGSN is registered to HSS; Afterwards, terminal enters SAE/LTE again, initiates the TAU process, obtains context from SGSN, and MME is registered to HSS, gives terminal distribution S-RA/S-TMSI; Terminal moves in RA that registers and S-RA and then need not initiate position renewal/registration message afterwards.Updating message then will be initiated in zone beyond terminal moves to the S-RA/RA of registration.Step 2 below 14 steps of last figure may needn't not initiated because SGSN does not change.

In the above-mentioned flow process, HSS need write down the information of MME and two network elements of SGSN simultaneously.Its specific operation process is: receive update GPRS location message, HSS replaces old SGSN information with new SGSN information, and notifies old SGSN to carry out information deletion; Receive update SAE location message, HSS replaces old MME information with new MME information, and notifies old MME to carry out information deletion.Promptly in HSS, SGSN and MME information are separate, and there is not the relation of mutual alternative in the isomery network element, and HSS receives location update message, only can notify corresponding old network element to carry out information deletion, can not notify old isomery network element to carry out information deletion.UE is to the SGSN registration and change RA, all can trigger SGSN and send update GPRS location message to HSS; Equally, UE is to the MME registration and change TA, all can trigger MME and send update SAE location message to HSS.In the prior art, HSS does not change the location update message of receiving under these two kinds of different situations at registration and position and carries out different disposal.

When the UE that is in two net login states is arranged in single net, the unusual shutdown without the detach process, after treating the UE start, in the attach register flow path that UE initiates, HSS is according to location update message, only with the old net element information in the net element information replacement homologous ray that sends location update message, at this moment, also preserve the net element information of another network on the HSS, and the information of preserving this UE on the network element of this another network.When the UE that is in two net login states is arranged in single net, through detach process normal shutdown, treat UE with the network of when shutdown identical systems in after the start, in the attach register flow path that UE initiates, HSS only preserves the information of the network element of initiating location update message, at this moment according to location update message, also preserve the net element information of another network on the HSS, and the information of preserving this UE on the network element of this another network.

In these cases, all remain with the relevant information of this UE on the isomery network element of the last registration of terminal, these information carry out all losing efficacy when attach adheres in terminal again, all need deletion, with the routing iinformation of correct reflection and this terminal.

About being in the registration process of going of terminal under two net registration mode, prior art does not have more concern for the registration process of going that is in the terminal under two net registration mode at present, register flow path: the HSS that goes under single net registration mode receives Purge MS message from SGSN, only can be with terminal iidentification for to be eliminated, with the set of " MS PS Purged for GPRS " sign at the 2G/3G net; Receive from MME remove registration message (similar Purge MS), HSS with terminal iidentification in the SAE/LTE network, to be eliminated.Terminal under being in two net registration mode is when the shutdown of single net overlay area, owing to only in single net, initiate the detach flow process, can cause the terminal related information of preserving on the isomery network element to can not get timely deletion, heterogeneous network metamessage among the HSS also can not get timely deletion simultaneously, this moment, terminal was in inaccessible state, as calling out or short message need be routed to this terminal the time, isomery network element and HSS can not correctly be responded the inaccessible information of terminal in time.In addition, be in the terminal under two net registration mode,, all initiate similar detach flow process, can cause the signaling waste to two networks in the shutdown of two nets overlay area.

Summary of the invention

The embodiment of the invention provides the register method of a kind of multimode terminal in heterogeneous network, to realize that HSS carries out different disposal at dissimilar register requirement, when realizing two net registrations, can in time delete unnecessary information.This method may further comprise the steps:

After the network element of first network is received the request of multimode terminal, send registration message to HSS; And, in described registration message, carry indication information according to the request type of described multimode terminal, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indicate the HSS reservation heterogeneous network metamessage relevant with described multimode terminal; Described HSS receives described registration message, and carries out corresponding location registration process according to described indication information.

An alternative embodiment of the invention provides a kind of registration apparatus for initiating, and this device comprises:

Receiving element is used to receive the detach request message that multimode terminal sends;

Indication information is provided with the unit, the detach request message that is used for receiving according to described receiving element is judged the reason of described multimode terminal attachment removal, and indication information is set according to described reason, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indication HSS keeps the heterogeneous network metamessage relevant with described multimode terminal;

Transmitting element, the indication information that is used for described indication information is provided with the unit setting is carried on the registration message that goes that sends to HSS, and sends the described registration message that goes.

An alternative embodiment of the invention provides a kind of HSS register device, and this device comprises:

Receiving element, be used to receive registration message, described registration message carries indication information, deletion of described indication information indication HSS notice isomery network element and the relevant information of multimode terminal of initiating register flow path, or indication HSS keeps the heterogeneous network metamessage relevant with described multimode terminal;

Acquiring unit is used for obtaining described indication information from described receiving element;

First processing unit is used for deleting the described indication information of the information relevant with described multimode terminal according to the described notice isomery network element that described acquiring unit gets access to, and carries out following processing:

Notify the last registration of described multimode terminal and with the network element consolidated network that sends described registration message in network element, and the network element in the heterogeneous network is deleted the information relevant with described multimode terminal; Delete the information of the network element in this consolidated network and the network element in the heterogeneous network among the described HSS; And the information of preserving the network element that sends described registration message;

Second processing unit is used for the described indication information of the described reservation that gets access to according to the described acquiring unit heterogeneous network metamessage relevant with described multimode terminal, carries out following processing:

Notify the last registration of described multimode terminal and with the network element consolidated network that sends described registration message in network element, delete the information relevant with described multimode terminal; Delete the information of the network element in this consolidated network among the described HSS, and preserve the information of the network element that sends described registration message.

In the above embodiment of the present invention, HSS can be according to the type of register requirement, be implemented in when registering in the heterogeneous network, prevent that the terminal related information of preserving on the old network element relevant with terminal in the heterogeneous network from can not get timely deletion, and can avoid HSS to preserve unnecessary information.

An alternative embodiment of the invention provides the deregistering method of a kind of multimode terminal in heterogeneous network, with the terminal related information on the timely deletion isomery network element, and the heterogeneous network metamessage among the HSS, but and saving signaling expense.This method may further comprise the steps:

After the network element of first network is received the detach request of multimode terminal, remove registration message to the HSS transmission; And

According to the reason of described multimode terminal attachment removal, remove to carry in the registration message indication information described, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indicate the HSS reservation heterogeneous network metamessage relevant with described multimode terminal;

Described HSS receives the described registration message that goes, and goes location registration process accordingly according to described indication information.

An alternative embodiment of the invention provides a kind of register device that goes, and this device comprises:

An alternative embodiment of the invention provides a kind of HSS to remove the location registration process device, and this device comprises:

Receiving element, be used for receiving and remove registration message, the described registration message that goes carries indication information, deletion of described indication information indication HSS notice isomery network element and the relevant information of initiating to remove register flow path of multimode terminal, or indication HSS keeps the heterogeneous network metamessage relevant with described multimode terminal;

Notify the network element deletion in the last heterogeneous network of registering of described multimode terminal the information relevant with described multimode terminal; Delete the information of this isomery network element among the described HSS; Described multimode terminal is designated in described heterogeneous network, and sends in the described network element place network that removes registration message and be eliminated;

Described multimode terminal is designated in the network that sends the described network element place of removing registration message is eliminated.

In the above embodiment of the present invention, HSS can be according to the reason of going register requirement, be implemented in the heterogeneous network multimode terminal is gone in the location registration process process, in time delete the relevant information of this terminal on the isomery network element, and in time delete heterogeneous network metamessage among the HSS, and can be when being in terminal under two net registration mode and shutting down in two nets overlay area, the saving signaling expense.

Description of drawings

Fig. 1 is the RAU schematic flow sheet in the prior art 3GPP system;

Fig. 2 is the Detach schematic flow sheet that terminal is initiated in the prior art 3GPP system;

Fig. 3 moves to the schematic flow sheet of 2G/3G system again for dual-mode terminal in the prior art is attached to the SAE/LTE system earlier;

Fig. 4 moves to the schematic flow sheet of SAE/LTE system again for dual-mode terminal in the prior art is attached to the 2G/3G system earlier;

Fig. 5 moves to the schematic flow sheet of SAE/LTE system again for dual-mode terminal in the embodiment of the invention one is attached to the 2G/3G system earlier;

Fig. 6 moves to the schematic flow sheet of 2G/3G system again for dual-mode terminal in the embodiment of the invention one is attached to the SAE/LTE system earlier;

Fig. 7 is the schematic flow sheet that dual-mode terminal is initiated attachment removal in the embodiment of the invention four to SGSN;

Fig. 8 is the registration of the embodiment of the invention six/go the to register structural representation of apparatus for initiating;

Fig. 9 registers/goes the structural representation of location registration process device for the HSS of the embodiment of the invention seven.

Embodiment

Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.

Embodiment one

Present embodiment has been described dual-mode terminal (hereinafter to be referred as terminal) and has been attached to earlier in the process that the 2G/3G system moves to the SAE/LTE system again, and be attached to earlier in the process that the SAE/LTE system moves to the 2G/3G system again, HSS realizes terminal at two net parallel registrations according to going to register heterogeneous network entity indication (Digister Inhomogenous NetworkEntity).

Referring to Fig. 5, for embodiment of the invention dual-mode terminal is attached to the 2G/3G system earlier, move to the schematic flow sheet of SAE/LTE system again, concrete steps comprise:

1, terminal is initiated to adhere to request to SGSN, carries IMSI in Attach Request message;

If the identify label that the 2a-2b terminal is brought up is not IMSI, then new SGSN is to old SGSN request IMSI;

If 3a-3b new SGSN is to old SGSN request IMSI failure, then new SGSN can be to terminal request IMSI;

4, new SGSN authenticates the identity of terminal;

5a-5h, new SGSN send registration message to HSS, carry in registration message and register the indication of heterogeneous network entity, and this indicated value is changed to yes; After HSS receives registration message, according to the indication of removing to register the heterogeneous network entity, trigger old SGSN and old MME and delete this terminal information, delete old SGSN on the HSS and the address of old MME simultaneously, the alternative old SGSN in address of new SGSN and the address of old MME are promptly used in the address of record new SGSN; HSS returns registration reply message then.

The terminal that is in two net login states is arranged in the single net of 2G/3G, if unusual shutdown without the detach process, then in the 2G/3G system in the old SGSN of this terminal and the SAE/LTE system oldMME of this terminal can preserve this terminal information, and also can preserve the address of this old SGSN and old MME among the HSS.If through the detach process and normal shutdown, then in the 2G/3G system in the old SGSN of this terminal and the SAE/LTE system old MME of this terminal can delete this terminal information, and also can delete the address of this old SGSN and old MME among the HSS, at this moment, HSS only writes down the address of new SGSN.

6, new SGSN sends to adhere to terminal and accepts message;

7, terminal is returned to adhere to new SGSN and is finished message;

8, terminal sends tracing section updating message (Track area update) to new MME, initiates registration to the SAE/LTE network;

9a-9b, MME find new SGSN according to RAI (route district information) after receiving this message, and obtain the contextual information of terminal to new SGSN;

10, new MME initiates authentication to terminal;

11, new MME returns response message get access to the contextual information of terminal from new SGSN after;

12, new MME sends registration message to HSS, carries in registration message and registers the indication of heterogeneous network entity, and this indicated value is changed to no; After HSS receives registration message, according to this indication, trigger oldMME deletion terminal information, HSS replaces old MME address with new MME address simultaneously, and returns registration reply message.

If before without any the information (moving to the SAE network for the first time as terminal) of MME, it is just passable that HSS only need write down this new MME address of initiating register requirement for HSS.If HSS has oldMME information, HSS notice old MME deletes the information relevant with terminal so, and replaces old MME address with new MME address.The related procedure of not drawing among the figure.

13, HSS upgrades response message to new MME home position;

14, new MME sends tracing section updating to terminal and accepts message (TA update Accept);

15, terminal sends tracing section updating to new MME and finishes message (TA update Complete), and terminal is finished two net registrations.

Referring to Fig. 6, for embodiment of the invention dual-mode terminal is attached to the SAE/LTE system earlier, move to the schematic flow sheet of 2G/3G system again, concrete steps comprise:

1, terminal is initiated to adhere to request to new MME, carries IMSI in Attach Request message;

If the identify label that the 2a-2b terminal is brought up is not IMSI, new MME is to old MME request IMSI;

If 3a-3b new MME is to old MME request IMSI failure, then new MME can be to terminal request IMSI;

4, new MME authenticates the identity of terminal;

5a-5h, new MME send registration message to HSS, carry in registration message and register the indication of heterogeneous network entity, and this indicated value is changed to yes; After HSS receives registration message, according to the indication of removing to register the heterogeneous network entity, trigger old SGSN and old MME and delete this terminal information, delete old SGSN on the HSS and the address of old MME simultaneously, the alternative old SGSN in address of new MME and the address of old MME are promptly used in the address of record new MME; HSS returns registration reply message then.

The terminal that is in two net login states is arranged in the single net of 2G/3G, if unusual shutdown without the detach process, then in the 2G/3G system in the old SGSN of this terminal and the SAE/LTE system oldMME of this terminal can preserve this terminal information, and also can preserve the address of this old SGSN and old MME among the HSS.If through the detach process and normal shutdown, then in the 2G/3G system in the old SGSN of this terminal and the SAE/LTE system old MME of this terminal can delete this terminal information, and also can delete the address of this old SGSN and old MME among the HSS, at this moment, HSS only writes down the address of new MME.

6, new MME sends to adhere to terminal and accepts message;

7, terminal is returned to adhere to new MME and is finished message;

8, terminal sends Routing Area Update message (Routing area update) to new SGSN, initiates registration to the UMTS network;

9a-9b, new SGSN find new MME according to TAI after receiving this message, and obtain the contextual information of terminal to new MME;

10, new SGSN initiates authentication to terminal;

11, new SGSN returns response message get access to the contextual information of terminal from new MME after;

12, new SGSN initiates registration message to HSS, carries in registration message and registers the indication of heterogeneous network entity, and this indicated value is changed to no; After HSS receives registration message, according to this indication, trigger oldSGSN deletion terminal information, HSS replaces old SGSN address with new SGSN address simultaneously, and returns registration reply message.

If before without any the information (moving to the 2G/3G network for the first time as terminal) of SGSN, it is just passable that HSS only need write down this new SGSN information of initiating registration message for HSS.If HSS has old SGSN information, HSS notice old SGSN deletes the information relevant with this terminal so, and replaces old SGSN address with the newSGSN address.The related procedure of not drawing among the figure.

13, HSS upgrades response message to new SGSN home position;

14, new SGSN sends tracing section updating to terminal and accepts message;

15, terminal sends tracing section updating to new SGSN and finishes message, and terminal is finished two net registrations.

From the flow process of embodiment one as can be seen, if terminal is initiated the attach attachment flow, then HSS goes to register heterogeneous network entity indication according to value for yes, old network element in the network element consolidated network of notice and transmission registration message and the old network element in the heterogeneous network, delete the information relevant, and in HSS, replace the old network element in the consolidated network and the information of the old network element in the heterogeneous network with the information of the new network element that sends registration message with terminal.The information relevant of preserving on the old network element can be in time deleted like this, and the unnecessary information of HSS can be in time deleted with terminal.

If terminal is initiated more new technological process of position, then HSS goes to register heterogeneous network entity indication according to value for no, notice is deleted the information relevant with terminal with the old network element in the network element consolidated network that sends registration message, keep the information relevant in the isomery network element with terminal, and in HSS, replace the information of network element old in the present networks, keep the information of isomery network element with the information of new network element.Like this, can avoid terminal in two nets, to carry out network registry when mobile continually.

Embodiment two

Present embodiment has been described terminal and has been attached to earlier in the process that the 2G/3G system moves to the SAE/LTE system again, and be attached to earlier in the process that the SAE/LTE system moves to the 2G/3G system again, HSS realizes terminal at two net parallel registrations according to updating type (Type).

The dual-mode terminal of present embodiment is attached to the 2G/3G system earlier, and to move to the flow process of SAE/LTE system more similar to flow process shown in Figure 5, and difference is that the indication information that carries in the location update message is the updating type sign.Idiographic flow to shown in Figure 5 similar, different step is:

Among the step 5a-5h, new SGSN sends registration message to HSS, carry the updating type sign in registration message, and this updating type is set to adhere to; After HSS receives this message, according to updating type is the indication of adhering to, trigger old SGSN and old MME and delete this terminal information, delete old SGSN on the HSS and the address of old MME simultaneously, the alternative old SGSN in address of new SGSN and the address of old MME are promptly used in the address of record new SGSN; HSS returns registration reply message then.

In the step 12, MME sends registration message to HSS, carries the updating type sign in registration message, and this updating type is set to the position renewal; After HSS receives registration message, be that the position is upgraded according to updating type, trigger old MME deletion terminal information, HSS replaces old MME address with new MME address simultaneously, and returns registration reply message.

If before without any the information (moving to the SAE network for the first time as terminal) of MME, it is just passable that HSS only need write down this new MME address of initiating register requirement for HSS.

The dual-mode terminal of present embodiment is attached to the SAE/LTE system earlier, and to move to the flow process of 2G/3G system more similar to flow process shown in Figure 6, and difference is that the indication information that carries in the location update message is the updating type sign.Idiographic flow to shown in Figure 6 similar, different step is:

Step 5a-5h, new MME send registration message to HSS, carry the updating type sign in registration message, and this updating type sign is set to adhere to; After HSS receives registration message, for adhering to, trigger old SGSN and old MME and delete this terminal information, on HSS, substitute the address of old SGSN and old MME simultaneously with the address of new MME according to updating type; HSS returns registration reply message then.

In the step 12, new SGSN initiates registration message to HSS, carries the updating type sign in registration message, and this updating type sign is set to the position renewal; After HSS receives registration message, be that the position is upgraded according to updating type, trigger old SGSN deletion terminal information, HSS replaces old SGSN address with new SGSN address simultaneously.

From the flow process of embodiment two as can be seen, if terminal is initiated the attach attachment flow, then HSS is according to the updating type indication of value for adhering to, old network element in the network element consolidated network of notice and transmission registration message and the old network element in the heterogeneous network, delete the information relevant, and in HSS, replace the old network element in the consolidated network and the information of the old network element in the heterogeneous network with the information of new network element with terminal.Can in time delete the information relevant of preserving on the old network element like this, and can in time delete HSS and go up unnecessary information with terminal.

If terminal is initiated more new technological process of position, then HSS is according to the updating type indication of value for upgrading, notice is deleted the information relevant with terminal with the old network element in the network element consolidated network that sends registration message, keep the information relevant in the isomery network element with terminal, and in HSS, replace the information of network element old in the present networks, keep the information of isomery network element with the information of new network element.Like this, can avoid terminal in two nets, to carry out network registry when mobile continually.

Embodiment three

Present embodiment has been described terminal and has been attached to earlier in the process that the 2G/3G system moves to the SAE/LTE system again, and be attached to earlier in the process that the SAE/LTE system moves to the 2G/3G system again, HSS registers network element address according to need, realizes terminal at two net parallel registrations.

The dual-mode terminal of present embodiment is attached to the 2G/3G system earlier, and to move to the flow process of SAE/LTE system more similar to flow process shown in Figure 5, and difference is that the indication information that carries in the location update message is the network element address that needs registration.Idiographic flow is similar to flow process shown in Figure 5, and different steps is:

Among the step 5a-5h, new SGSN sends registration message to HSS, and carrying in registration message needs the registration network element address, and is the address of new SGSN with this address setting; After HSS receives registration message, trigger old SGSN and old MME and delete this terminal information, delete old SGSN on the HSS and the address of old MME simultaneously, the address of record new SGSN promptly substitutes the address of old SGSN and old MME with the address of new SGSN; HSS returns registration reply message then.

In the step 12, new MME sends registration message to HSS, and carrying in registration message needs the registration network element address, and is the address of new MME and the address of new SGSN with this address setting; After HSS receives registration message, trigger old MME deletion terminal information, keep the end message on the new SGSN, HSS replaces old MME address with new MME address simultaneously, keeps the address of the new SGSN among the HSS.

The dual-mode terminal of present embodiment is attached to the SAE/LTE system earlier, and to move to the flow process of 2G/3G system more similar to flow process shown in Figure 6, and difference is that the indication information that carries in the location update message is the network element address that needs registration.Idiographic flow is similar to the flow process of Fig. 6, and different steps is:

Step 5a-5h, new MME send registration message to HSS, and carrying in registration message needs the registration network element address, and are the address of new MME with this address setting; After HSS receives registration message, trigger old SGSN and old MME and delete this terminal information, delete old SGSN on the HSS and the address of oldMME simultaneously, the address of record new MME promptly substitutes the address of old SGSN and old MME with the address of new MME; HSS returns registration reply message then.

In the step 12, new SGSN initiates registration message to HSS, and carrying in registration message needs the registration network element address, and is the address of new SGSN and the address of new MME with this address setting; After HSS receives registration message, trigger old SGSN deletion terminal information, keep the end message on the new MME, HSS replaces old SGSN address with new SGSN address simultaneously, keeps the address of the new MME on the HSS.

From the flow process of embodiment three as can be seen, if terminal is initiated the attach attachment flow, then HSS is according to the address of the network element of the transmission registration message that carries in the registration message, old network element in the notice consolidated network is deleted the information relevant with terminal with the old network element (address of said network element is all beyond the address realm that registration message carries) in the heterogeneous network, and the information with the network element that sends registration message is replaced the information of the old network element in the consolidated network and the information of the old network element in the heterogeneous network in HSS.Can in time delete the information relevant of preserving on the old network element like this, and can in time delete HSS and go up unnecessary information with terminal.

If terminal is initiated more new technological process of position, then HSS is according to the address of the new network element address and the last isomery network element of registering of this terminal of the transmission registration message that carries in the registration message, notice is deleted the information relevant with terminal with the old network element (address of this network element is outside the address realm that registration message carries) in the network element consolidated network that sends registration message, keep the information relevant in the isomery network element of this address appointment with terminal, and in HSS, replace the information of network element old in the present networks, keep the information of the isomery network element of this address appointment with the information of new network element.Like this, can avoid terminal in two nets, to carry out network registry when mobile continually.

Embodiment four

Present embodiment has been described dual-mode terminal and has been initiated in detach (attachment removal) flow process, and HSS realizes terminal is registered parallel the going of two nets according to the indication (switch off) of whether shutting down.

Referring to Fig. 7, initiate to go the schematic diagram of register flow path for dual-mode terminal in the embodiment of the invention four by the 2G/3G network, concrete steps comprise:

1, terminal closedown sends detach request message (Detach Request) to SGSN, carries " switch off " shutdown indication (value is yes) in the message.Because be shutdown, so SGSN does not need to respond.

2, SGSN sends the message (Purge MS) of removing terminal to HSS, carries " switch off " indication (value is yes);

3a-3b, HSS for to be eliminated at two nets, and send Cancel Location message, the notice MME deletion information relevant with this terminal to MME with terminal iidentification.

4, HSS responds to SGSN.

Terminal initiates to go register flow path and above-mentioned flow process similar by the SAE/LTE network, carries " switch off " shutdown at MME in the registration message (similar Purge MS) to going of sending of HSS and indicates, and detailed process no longer describes in detail.

In the present embodiment, when the terminal under two net registration mode was shut down in a single net, terminal was initiated the detach process to SGSN or MME, and SGSN or MME carry shutdown indication " switch off " value to going of sending of HSS and be changed to " yes " in the registration message; HSS indicates according to this, notifies the deletion of another network the information relevant with this terminal, and with this terminal iidentification for all to be eliminated at two nets.

When the terminal under two net registration mode during in the overlapping covered shutdown of two nets, this terminal can only need to initiate the detach process to one of SGSN or MME, SGSN or MME are to the carried terminal shutdown indication " switch off " in the registration message of going of HSS transmission, and value is changed to " yes "; HSS indicates according to this, notifies the deletion of another network the information relevant with this terminal, and with this terminal iidentification for all to be eliminated at two nets.

When the terminal under two net registration mode is initiated the attachment removal flow process because of non-shutdown reason, SGSN or MME know that according to the detach request that terminal sends terminal is because of the attachment removal of non-shutdown reason, then send to HSS go carry shutdown indication " switch off " in the registration message, and value is changed to " no "; HSS indicates according to this, keeps the information relevant with this terminal in another network, and with this terminal iidentification for to be eliminated in current network.

Embodiment five

Present embodiment has been described in the dual-mode terminal initiation attachment removal flow process, and whether the HSS basis goes to register heterogeneous network entity indication (Digister Inhomogenous Network Entity) is realized terminal is registered parallel the going of two nets.

When the terminal under two net registration mode is shut down in a single net, this terminal is initiated the detach process to SGSN or MME, and SGSN or MME go to carry in the registration message and register heterogeneous network entity indication Digister Inhomogenous Network Entity value and be changed to " yes " to what HSS sent; HSS indicates according to this, notifies the deletion of another network the information relevant with this terminal, and with this terminal iidentification for all to be eliminated at two nets.

When the terminal under two net registration mode during in the overlapping covered shutdown of two nets, this terminal can only need to initiate the detach process to one of SGSN or MME, and SGSN or MME register heterogeneous network entity indication Digister Inhomogenous Network Entity value to going of sending of HSS and be changed to " yes "; HSS indicates according to this, notifies the deletion of another network the information relevant with this terminal, and with this terminal iidentification for all to be eliminated at two nets.

When the terminal under two net registration mode is initiated the attachment removal flow process because of non-shutdown reason, SGSN or MME know that according to the detach request that terminal sends terminal is because of the attachment removal of non-shutdown reason, then sending to going to carry in the registration message and registering heterogeneous network entity indication of HSS, and value is being changed to " no "; HSS indicates according to this, keeps the information relevant with this terminal in another network, and with this terminal iidentification for to be eliminated in current network.

From the foregoing description four and five as can be seen, SGSN/MME send to HSS go carry indication in the registration message, when the terminal under two net registration mode is shut down in a single net, HSS can in time notify the deletion of another network with the relevant information of this terminal, and HSS with this terminal iidentification for all to be eliminated at two nets; When the terminal under two net registration mode during in the overlapping covered shutdown of two nets, terminal only need be initiated the detach flow process to a network, can go to register the processing of this terminal to another network by this indication HSS, thereby can the saving signaling expense.

Embodiment six

The embodiment of the invention also provides a kind of registration apparatus for initiating and has removed to register apparatus for initiating.

Referring to Fig. 8, be the registration apparatus for initiating structural representation of the embodiment of the invention six.In the 2G/3G system, this device is integrated in SGSN, and in the SAE/LTE system, this device is integrated in MME.This device comprises: receiving element, indication information are provided with unit and transmitting element.

Receiving element is used to receive the request message of multimode terminal, comprises asking or position updating request adhering to of multimode terminal;

Indication information is provided with the type that the unit is used for the request message that receives according to receiving element, and indication information is set, and is specially: adhere to request according to what receiving element received, indication information is set is the notice isomery network element deletion information relevant with multimode terminal; According to the position updating request that receiving element receives, indication information is set for keeping the heterogeneous network metamessage relevant with multimode terminal;

The indication information that transmitting element is used for indication information is provided with the unit setting is carried on the registration message that sends to HSS, and sends this registration message.

Referring to Fig. 8, be the structural representation that removes to register apparatus for initiating of the embodiment of the invention six.In the 2G/3G system, this device is integrated in SGSN, and in the SAE/LTE system, this device is integrated in MME.This device comprises: receiving element, indication information are provided with unit and transmitting element.

Receiving element is used to receive the detach request message that multimode terminal sends, and comprises receiving the detach request message of multimode terminal because of shutdown or the transmission of non-shutdown reason;

Indication information is provided with the unit and is used for the reason that the detach request message that receives according to receiving element is judged the multimode terminal attachment removal, and indication information is set according to described reason, be specially:, indication information is set is the notice isomery network element deletion information relevant with described multimode terminal according to the detach request that receiving element receives because of the transmission of shutdown reason; According to the detach request that receiving element receives, indication information is set for keeping the heterogeneous network metamessage relevant with described multimode terminal because of non-shutdown reason transmission;

The indication information that transmitting element is used for indication information is provided with the unit setting is carried on the registration message that goes that sends to HSS, and sends this and remove registration message.

Embodiment seven

The embodiment of the invention also provides the register device of a kind of HSS and has removed register device.

Referring to Fig. 9, be the structural representation of the location registration process device of the HSS of the embodiment of the invention seven.This device comprises: receiving element, acquiring unit, first processing unit and second processing unit.

Receiving element, be used to receive registration message, registration message carries indication information, deletion of this indication information indication HSS notice isomery network element and the relevant information of multimode terminal of initiating register flow path, or indication HSS keeps the heterogeneous network metamessage relevant with this multimode terminal;

Acquiring unit is used for obtaining indication information from described receiving element;

The notice isomery network element that first processing unit is used for getting access to according to acquiring unit is deleted the indication information of the information relevant with multimode terminal, carries out following processing:

The last registration of notice multimode terminal and with the network element consolidated network that sends registration message in network element, and the network element in the heterogeneous network is deleted the information relevant with this multimode terminal; The network element among the deletion HSS in this consolidated network and the information of the network element in the heterogeneous network; And the information of preserving the network element that sends registration message;

Second processing unit is used for the indication information of the reservation that gets access to according to the acquiring unit heterogeneous network metamessage relevant with multimode terminal, carries out following processing:

The last registration of notice multimode terminal and with the network element consolidated network that sends registration message in network element, delete the information relevant with this multimode terminal; The information of the network element among the deletion HSS in this consolidated network, and the information of preserving the network element that sends registration message.

Referring to Fig. 9, be the structural representation that removes the location registration process device of the HSS of the embodiment of the invention seven.This device comprises: receiving element, acquiring unit, first processing unit and second processing unit.

Receiving element is used for reception and removes registration message, go registration message to carry indication information, deletion of indication information indication HSS notice isomery network element and the relevant information of initiating to remove register flow path of multimode terminal, or indication HSS keeps the heterogeneous network metamessage relevant with this multimode terminal;

Acquiring unit is used for obtaining indication information from receiving element;

Notify the network element deletion in the last heterogeneous network of registering of this multimode terminal the information relevant with this multimode terminal; The information of this isomery network element among the deletion HSS; This multimode terminal is designated in heterogeneous network, and sends in the network element place network remove registration message and be eliminated;

This multimode terminal is designated in the network at network element place of registration message is removed in transmission is eliminated.

In sum, in the embodiment of the invention by indication information is set, make HSS at adhering to and the position is upgraded the registration message of receiving under these two kinds of different situations and carried out different location registration process, when realizing two net registrations, the terminal related information of preserving on the old network element that can in time delete, and can in time delete HSS and go up the unnecessary information of preserving.

The reason that HSS goes to register at terminal in the embodiment of the invention is carried out the different location registration process of going, when terminal under two net registration mode is shut down in a single net, HSS can in time notify the deletion of another network with the relevant information of this terminal, and HSS can be correct with this terminal iidentification for all to be eliminated at two nets; When the terminal under two net registration mode during in the overlapping covered shutdown of two nets, terminal only need be initiated the detach flow process to a network, thus effective saving signaling.

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. multimode terminal process registration in heterogeneous network is characterized in that, may further comprise the steps:

After the network element of first network is received the request of multimode terminal, send registration message to home subscriber server HSS; And

According to the request type of described multimode terminal, in described registration message, carry indication information, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indication HSS keeps the heterogeneous network metamessage relevant with described multimode terminal;

Described HSS receives described registration message, and carries out corresponding location registration process according to described indication information.

2. the method for claim 1, it is characterized in that, the network element of described first network receive described multimode terminal adhere to request after, send registration message to described HSS, carry described indication information, indicate the described HSS notice isomery network element deletion information relevant with described multimode terminal;

Or, after the network element of described first network is received the position updating request of described multimode terminal, send registration message to described HSS, carry described indication information, indicate described HSS to keep the heterogeneous network metamessage relevant with described multimode terminal.

3. method as claimed in claim 2 is characterized in that, whether described indication information for removing to register network element ID;

The network element of described first network adheres to request according to what described multimode terminal sent, carries the described network element ID that whether goes to register in sending to the registration message of described HSS, and this ident value is changed to is;

Or the network element of described first network carries the described network element ID that whether goes to register according to the position updating request that described multimode terminal sends in sending to the registration message of described HSS, and this ident value is changed to not.

4. method as claimed in claim 2 is characterized in that, described indication information is the updating type sign;

The network element of described first network carry described updating type sign in sending to the registration message of described HSS, and updating type is set to adhere to according to the request of adhering to of described multimode terminal transmission;

Or the network element of described first network carry described updating type sign in sending to the registration message of described HSS, and updating type is set to the position renewal according to the position updating request that described multimode terminal sends.

5. method as claimed in claim 2 is characterized in that, described HSS carries out the process of corresponding location registration process according to the described indication information of the described notice isomery network element deletion information relevant with described multimode terminal, comprises step:

Notify network element in described first network of the last registration of described multimode terminal and the network element in the heterogeneous network, delete the information relevant with described multimode terminal;

Delete among the described HSS network element in this first network and the information of the network element in the heterogeneous network, and the information of preserving the network element of described first network that sends described registration message;

Or described HSS carries out the process of corresponding location registration process according to the described indication information of the described reservation heterogeneous network metamessage relevant with multimode terminal, comprises step:

Notify the network element in last described first network of registering of described multimode terminal, delete the information relevant with described multimode terminal;

Delete among the described HSS information of the network element of this first network, and the information of preserving the network element of described first network that sends described registration message.

6. method as claimed in claim 2 is characterized in that, described indication information is a network element address information;

The network element of described first network carries network element address information according to the request of adhering to of described multimode terminal transmission in sending to the registration message of described HSS, described network element address information is the address of the network element of described first network of the described registration message of transmission;

Described HSS notifies described multimode terminal last register and the network element beyond described address information, deletes the information relevant with described multimode terminal, and the information of preserving the network element of described address information appointment;

Or, the position updating request that the network element of described first network sends according to described multimode terminal, in the registration message that sends to described HSS, carry network element address information, described network element address information is the address of the network element of described first network of the described registration message of transmission, and the address of the network element in the heterogeneous network of the last registration of described multimode terminal;

Described HSS deletes the last registration of described multimode terminal and the information network element beyond described address information, and the information of preserving the network element of described address information appointment.

7. as the described method of the arbitrary claim of claim 1-2, it is characterized in that described first network and described heterogeneous network are respectively one of 2G/3G network and SAE/LTE network;

The network element of described 2G/3G network is Serving GPRS Support Node SGSN, and the network element of described SAE/LTE network is Mobility Management Entity MME.

8. a multimode terminal goes process registration in heterogeneous network, it is characterized in that, may further comprise the steps:

According to the reason of described multimode terminal attachment removal, remove to carry in the registration message indication information described, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indicate the relevant heterogeneous network metamessage of HSS reservation and described multimode terminal;

9. method as claimed in claim 8, it is characterized in that, the detach request that the network element of described first network sends because of the shutdown reason according to described multimode terminal, remove registration message to described HSS transmission, carry described indication information, indicate the described HSS notice isomery network element deletion information relevant with described multimode terminal;

Or the detach request that the network element of described first network sends because of non-shutdown reason according to described multimode terminal is removed registration message to described HSS transmission, carries described indication information, indicates described HSS to keep the heterogeneous network metamessage relevant with described multimode terminal.

10. method as claimed in claim 9 is characterized in that, described indication information is the sign that whether shuts down;

The network element of described first network sends the described registration message that goes according to the detach request because of the shutdown reason that described multimode terminal sends to described HSS, carries the described sign that whether shuts down, and this ident value is changed to is;

Or the network element of described first network sends the described registration message that goes according to the detach request because of non-shutdown reason transmission that described multimode terminal sends to described HSS, carries the described sign that whether shuts down, and this ident value is changed to not.

11. method as claimed in claim 9 is characterized in that, whether described indication information for removing to register network element ID;

The detach request that the network element of described first network sends because of the shutdown reason according to described multimode terminal sends to described HSS and to remove registration message, carries the described network element ID that whether goes to register, and this ident value is changed to is;

Or the detach request that the network element of described first network sends because of non-shutdown reason according to described multimode terminal is removed registration message to described HSS transmission, carries the described network element ID that whether goes to register, and this ident value is changed to not.

12. method as claimed in claim 9 is characterized in that, described HSS carries out corresponding process of going location registration process according to the described indication information of the described notice isomery network element deletion information relevant with described multimode terminal, comprises step:

Notify the network element deletion information relevant in the heterogeneous network of described multimode terminal registration with described multimode terminal;

Delete the information of the isomery network element of the registration of multimode terminal described in the described HSS;

Described multimode terminal is designated in described first network and heterogeneous network is eliminated;

Or described HSS carries out the process of respective handling according to the described indication information of the described reservation heterogeneous network metamessage relevant with described multimode terminal, comprises step:

Described multimode terminal is designated in described first network is eliminated.

13., it is characterized in that described first network and described heterogeneous network are respectively one of 2G/3G network and SAE/LTE network as the described method of the arbitrary claim of claim 8-9;

14. a registration apparatus for initiating is characterized in that, comprising:

Receiving element is used to receive the request message of multimode terminal;

Indication information is provided with the unit, the request type that is used for the described multimode terminal that receives according to described receiving element, indication information is set, the indication HSS notice isomery network element deletion information relevant with described multimode terminal, or indication HSS keeps the heterogeneous network metamessage relevant with described multimode terminal;

Transmitting element, the indication information that is used for described indication information is provided with the unit setting is carried on the registration message that sends to HSS, and sends described registration message.

15. device as claimed in claim 14 is characterized in that, described receiving element receives asks or position updating request adhering to of multimode terminal;

Described indication information is provided with the unit and adheres to request according to what described receiving element received, described indication information is set is the notice isomery network element deletion information relevant with described multimode terminal; According to the position updating request that described receiving element receives, described indication information is set for keeping the heterogeneous network metamessage relevant with described multimode terminal.

16. device as claimed in claim 14 is characterized in that, in the 2G/3G network, described device is integrated in SGSN; In the SAE/LTE network, described device is integrated in MME.

17. one kind is removed to register apparatus for initiating, it is characterized in that, comprising:

18. device as claimed in claim 17 is characterized in that, described receiving element receives the detach request message of multimode terminal because of shutdown or the transmission of non-shutdown reason;

Described indication information is provided with the unit according to the detach request because of the transmission of shutdown reason that described receiving element receives, and described indication information is set is the notice isomery network element deletion information relevant with described multimode terminal; According to the detach request that described receiving element receives, described indication information is set for keeping the heterogeneous network metamessage relevant with described multimode terminal because of non-shutdown reason transmission.

19. device as claimed in claim 17 is characterized in that, in the 2G/3G network, described device is integrated in SGSN; In the SAE/LTE network, described device is integrated in MME.

20. the location registration process device of a HSS is characterized in that, comprising:

21. a HSS removes the location registration process device, it is characterized in that, comprising: