CN101626566B

CN101626566B - Method and equipment for realizing terminal transfer under ISR scene

Info

Publication number: CN101626566B
Application number: CN2008101162506A
Authority: CN
Inventors: 陈中平; 孙晓姬
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2008-07-07
Filing date: 2008-07-07
Publication date: 2011-12-21
Anticipated expiration: 2028-07-07
Also published as: CN101626566A

Abstract

The invention discloses a method and equipment for realizing terminal transfer under an ISR scene, and belongs to the field of communication. The method comprises the following steps: starting idle mode signaling reduction ISR used for an old side network element of a first network side and a second network element of a second network side by a terminal, and staying the ISR on the second network side; acquiring global unique temporary identity which is newly distributed by a new side network element on the first network side by the second network element; paging a terminal, and transmitting the global unique temporary identity to the paged terminal; and replying a completion message, and completing registration of the new side network element to a home subscriber service HSS. The equipment comprises an acquiring module, a paging module, a transmitting module and a replying module, when the UE starts the ISR and stays the ISR on the SGSN side, or the UE starts the ISR and stays the ISR on MME side with fixed position region, the method and the equipment ensure that the UE acquires the GUTI identification newly distributed by the MME side, ensure that registration of the HSS is completed on the new side MME, realize transfer of the terminal starting the ISR, complete MME load balance processing, and similarly, can realize SGSN load balance processing.

Description

Realize the method and apparatus of terminal transfer under the ISR scene

Technical field

The present invention relates to communication field, particularly realize the method and apparatus of terminal transfer under the ISR scene.

Background technology

Along with development of wireless communication devices, referring to Fig. 1, a kind of radio gradual network structure schematic diagram is provided, wherein, the core net of current wireless evolvement network mainly comprises MME (Mobility Management Entity, mobile management entity), SGW (Serving Gateway, gateway), PGW (PDN Gateway, Packet DataNetwork Gateway, packet data network gateway) three logic function bodies, wherein, MME is that mobile management entity is responsible for NAS (Non-Access-Stratum, Non-Access Stratum) signaling and NAS signaling are encrypted and roaming, functions such as tracking, distributing user temporary identity sign, safety function etc., SGW is responsible for the mobility anchor point and the Lawful Interception relevant information of local mobility anchor point and 3GPP (3rd Generation Partnership Project, third generation partner plan) internal system; PGW is responsible for strategy execution and charging and Lawful Interception correlation function.

In next generation network architecture evolution process, introduced " Pool district ", wherein, there are a plurality of MME/SGW to move concurrently in the Pool district, they share the business in the Pool district jointly.The Radio Resource that is in the Pool district as UE covers following time, and it is only served by a special core net CN node (being the MME node) in this Pool district.MS (Mobile Station, mobile base station) when mobile, need not to change its serving MME node in the Pool district, reduced the internodal renewal of MME, switching and migration.And, in the Pool district, increase a MME node and can enlarge the ability that the Pool district accepts the MME service, when a MME fault, also can provide professional by other MME nodes.

Because the effect and the status of each MME node in the Pool district all are equal to for the user, along with increasing of number of users, the burden of equipment of the core network is also more and more heavier, how between each MME, to realize load balancing, avoid occurring the problem of the traffic overload of certain MME, realize that the user's migration operation between the different MME is a problem anxious to be solved in the current network architecture evolution process among the Pool.Referring to Fig. 2, provide a kind of information interaction schematic diagram of MME load balancing migration.As shown in the figure:

1. old side MME carries out load at needs and heavily divides timing, and the notice that sends a notification message association base station eNodeB switches the certain user, carries in this message and need carry out the user ID that load heavily distributes.

2.eNodeB send handoff request Handover Required to old side MME according to user ID, carry serving MME sign or MME identification list (MME list) that eNodeB selects for the user in the message, Target ID is set to this eNodeB ID, for convenience of explanation, with source eNodeB and target eNode B be same be example.

3. old side MME avoids transferring load to same MME and causes this MME also to transship in order to guarantee load balancing, can select different MME from MME list for different user.Select a new MME and send forwarding handoff request Forward Relocation Request to new side MME for the user according to MME sign new among the step S1102 or MME identification list, the contextual information that carries UE in this message comprises PGW address, PGWTEID (PGW bearing end slogan), SGW address, SGWTEID (SGW bearing end slogan).

4. new side MME distributes a MME UE S1 AP ID for the user and sends handoff request Handover Request and carries SGW address and SGW TEID to eNodeB.

Carry eNodeB UE S1 AP ID (this ID is equal to the eNodeB S1 AP ID among the step S1102) to new side MME 5.eNodeB send switching request response Handover Request Ack.

6. new side MME sends and transmits handoff response Forward Relocation Response message to old side MME.

7. new side MME sends switching command Handover Command to Target eNodeB (being source eNodeB).

Switch indication Handover Notify 8.eNodeB send for new side MME.

9. new side MME sends the forwarding handoff response and finishes Forward Relocation Complete message to old side MME.

10. old side MME sends and transmits handoff response and finish and reply Forward Relocation Complete Ack message to new side MME, informs and receives that context transfer finishes message.

If 11-14 SGW changes, need to upgrade the bearer context information of SGW and PGW.

15. the user initiates TAU (TrackingArea Update, tracing section updating) flow process, New MME is registered to HSS (Home Subscriber Service, attribution assigned user server) in, New MME also needs to distribute a new GUTI (Globally Unique Temporary Identity, global unique temporary identity) to the user.

The inventor finds when realization is of the present invention, in the processing procedure of existing MME load balancing, if the user is in Idle state, network side is carried out Handover flow process transfer context can't wait for that UE carries out the TAU flow process or service request Service Request flow process transmission corresponding message makes the state transition of UE to connected state to network side.

Therefore, if UE has enabled ISR (Idle mode Signalling Reduction, saving signaling under the idle pulley or limitation signaling) and reside in the SGSN side, the MME side is when carrying out Handover flow process realization MME load balancing, because the MME side can't paging arrive UE, make it change connected state, therefore cause and the new GUTI that New MME distributes can't be notified to UE, New MME also can't be accomplished to the registration of HSS and relevant other problems.

Summary of the invention

Under the scene that realizes the ISR activation, the processing of MME load balancing, the embodiment of the invention provides the method and apparatus of realizing terminal transfer under the ISR scene.Described technical scheme is as follows:

On the one hand, the method of terminal transfer under a kind of ISR of realization scene is provided, terminal is enabled the saving signaling ISR under the idle pulley of second network element of the old side network element that is used for first network side and second network side, and resides in described second network side, and described method comprises:

Described second network element obtains the newly assigned global unique temporary identity of new side network element of described first network side;

The described terminal of paging sends to the terminal that paging is arrived with described global unique temporary identity;

Message is finished in answer, finishes the registration of described new side network element to attribution assigned user server HSS;

Wherein, when described old side network element is specially MME, described new side network element is new side MME, and when described second network element was specially SGSN, the step of the described terminal of described paging was specially:

Described SGSN sends paging Paging message call terminal; Then described terminal is to the response of described SGSN send server request Service Request message as described paging Paging message;

Or described SGSN sends the beep-page message call terminal, and described beep-page message carries replys indication; Then described terminal sends the response of Routing Area Update request RAU Request message as described beep-page message according to described answer indication to described SGSN.

On the other hand, provide a kind of mobile management device, described equipment comprises:

Acquisition module is used to obtain the global unique temporary identity that the opposite end mobile management device distributes;

The paging module is used for after described acquisition module gets access to described global unique temporary identity call terminal;

Sending module is used for getting access to global unique temporary identity and the paging of described paging module after terminal at described acquisition module, and the global unique temporary identity that described acquisition module is obtained sends to the terminal that the paging of described paging module is arrived;

Reply module, be used for after described sending module sends to described terminal with described global unique temporary identity, reply to the opposite end network side and finish message;

Wherein, described terminal has been enabled the saving signaling ISR under the idle pulley, and described equipment is specially mobile management entity MME, or service GRPS support node SGSN;

When described equipment is SGSN, when described opposite end mobile management device was MME, the described terminal of described paging module paging specifically was used for described SGSN and sends paging Paging message call terminal; Then described terminal is to the response of described SGSN send server request Service Request message as described paging Paging message;

The beneficial effect of the technical scheme that the embodiment of the invention provides is:

The present invention has successfully realized obtaining the newly assigned global unique temporary identity of new side network element (MME or SGSN) of first network side by second network element (SGSN or MME) under the scene of ISR activation; Call terminal sends to the terminal that paging is arrived with global unique temporary identity; And reply and finish message, finish of the registration of new side network element to attribution assigned user server HSS, thereby realized it no matter being when UE enables ISR and resides in the SGSN side, still terminal is enabled saving signaling ISR under the idle pulley, is resided in the band of position of MME side and terminal when constant, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS.Equally successfully realized under the scene of ISR activation, no matter be when UE enables ISR and resides in the MME side, still terminal is enabled saving signaling ISR under the idle pulley, is resided in the band of position of SGSN side and terminal when constant, guaranteed that UE gets access to the GUTI sign of the new partition of SGSN side, guaranteed simultaneously that also the new side SGSN of SGSN side is accomplished to the registration of HSS, successfully the migration of the terminal of ISR has been enabled in realization.

Description of drawings

Fig. 1 is the radio gradual network structure schematic diagram that prior art provides;

Fig. 2 is the information interaction schematic diagram of the MME load balancing migration that provides of prior art;

Fig. 3 is the method flow diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 1;

Fig. 4 is the mutual schematic diagram of method of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 1;

Fig. 5 is the method flow diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 2;

Fig. 6 is the method information interaction schematic diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 2;

Fig. 7 is the method flow diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 3;

Fig. 8 is the method information interaction schematic diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 3;

Fig. 9 is the method flow diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 4;

Figure 10 is the method information interaction schematic diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 4;

Figure 11 is the method flow diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 5;

Figure 12 is the method information interaction schematic diagram of terminal transfer under the realization ISR scene that provides of the embodiment of the invention 5;

Figure 13 is the schematic diagram of the mobile management device that provides of the embodiment of the invention 6.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, embodiment of the present invention is described further in detail below in conjunction with accompanying drawing.

Under the scene that realizes the ISR activation, the processing of load balancing, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, method thes contents are as follows: terminal is enabled the saving signaling ISR under the idle pulley of second network element of the old side network element that is used for first network side and second network side, and reside in second network side, method comprises: second network element obtains the newly assigned global unique temporary identity of new side network element of first network side; Call terminal sends to the terminal that paging is arrived with global unique temporary identity; Message is finished in answer, finishes the registration of new side network element to attribution assigned user server HSS.

Wherein, when practical application, above-mentioned first network side is specially the mobile management entity MME side, and correspondingly, second network side is specially service GRPS support node SGSN side; Or; Above-mentioned first network side is specially the SGSN side; Correspondingly, second network side is specially the MME side.Describe for the ease of unified among following each embodiment, will serve GRPS support node SGSN and mobile management entity MME and be referred to as mobile management device, they are a kind of network element devices.

For the method for terminal transfer under the realization ISR scene that the embodiment of the invention is provided is elaborated, see also following each embodiment, wherein, be specially the mobile management entity MME side with above-mentioned first network side, correspondingly, to be specially service GRPS support node SGSN side be that example describes to second network side:

Embodiment 1:MME load balancing adopts the processing mode of Handover, UE enables ISR and resides in the SGSN side, SGSN obtains the heavy request for allocation GUTI of the GUTI Reallocation Command message that the MME side sends, SGSN paging UE, the new GUTI that New MME is distributed gives UE by transmitting GUTI Reallocation Command or RAU Accept message informing, and indication UE gets back to MME next time and initiatively initiates the TAU flow process and finish the registration of New MME to HSS.

Embodiment 2:MME load balancing adopts the processing mode of Handover, UE enables ISR and resides in the SGSN side, SGSN obtains the GUTI Reallocation Command message that the MME side sends, SGSN paging UE, the new GUTI that New MME is distributed gives UE by transmitting GUTI Reallocation Command or RAU Accept message informing, SGSN replys New MME with New GUTI notice UE, and New MME oneself initiatively is accomplished to the registration of HSS.

Embodiment 3:MME load balancing adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process, UE enables ISR and resides in the SGSN side, and SGSN obtains the MME side and sends particular message (as triggering message) triggering SGSN paging Idle state UE.MME transmits GUTI Reallocation Command message or TAU Request message to SGSN, the new GUTI that SGSN distributes New MME is by transmitting GUTI Reallocation Command or RAU Accept message or transmit TAU Accept message informing and give UE, and indication UE gets back to MME next time and initiates the TAU flow process and finish the registration of New MME to HSS.

Embodiment 4:MME load balancing adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process, UE enables ISR and resides in the SGSN side, and SGSN obtains the particular message triggering SGSN paging Idle state UE that the MME side sends.MME transmits GUTI Reallocation Command message or TAU Request message to SGSN, the new GUTI that SGSN distributes New MME passes through to transmit GUTI Reallocation Command or RAU Accept message or transmits TAU Accept message informing and give UE, SGSN replys New MME with New GUTI notice UE, and New MME oneself initiatively is accomplished to the registration of HSS.

Embodiment 1

Referring to Fig. 3, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, and present embodiment is with the processing mode of MME load balancing employing Handover, and UE enables ISR and resides in the SGSN side is that example describes, and this method thes contents are as follows:

Step 101: carry out Handover and finish MME load balancing process.

Wherein, carry out Handover and finish MME load balancing process, specifically referring to as follows:

3. old side MME avoids transferring load to same MME and causes this MME also to transship in order to guarantee load balancing, can select different MME from MME list for different user.Select a new MME and send forwarding handoff request Forward Relocation Request for the user according to MME sign new among the step S1102 or MME identification list to new side MME, the contextual information that carries UE in this message comprises PGW address, PGWTEID (PGW bearing end slogan), SGW address, SGW TEID (SGW bearing end slogan), the ISR sign.

Wherein, this ISR sign has represented that old side MME has activated ISR.Correspondingly, decision continued to keep activating the ISR state after new side MME got access to the contextual information of this UE.

Switch indication Handover Notify 8.eNodeB send for new side MME.

If 11-14 SGW changes, need to upgrade the bearer context information of SGW and PGW.As follows:

11, new side MME sends to new SGW and upgrades context request Uapdate Bearer Request message.

12, new SGW sends renewal context request Uapdate Bearer Request message to PGW.

13:PGW returns to new SGW and upgrades context response Uapdate BearerResponse message.

14: new SGW returns to new side MME and upgrades context response Uapdate Bearer Response message.

Step 102: new side MME is known needs to keep ISR, to having carried out the related heavy request for allocation GUTI of the SGSN transmission GUTI Reallocation Command message of ISR with old side MME, carry the GUTI that new side MME distributes in this message, TAI list, the ISR sign, wherein the indication of ISR sign needs to keep ISR to connect.

Wherein, the ISR that carries in the heavy allocation request message of this GUTI is designated optional cell, can also be set to according to the needs of system: keep the ISR state if do not carry then can give tacit consent to continuation by SGSN.

Those skilled in the art can be known, can also exist further, can also carry deexcitation ISR state information in this message, for example: realize by ISR Deactivation (going ISR to activate sign) is set; Certainly, can be realized giving this SGSN with deexcitation ISR state information notification by S-GW, it be that example describes that present embodiment need keep the ISR state with this UE.

Further, can also not adopt the heavy request for allocation GUTI Reallocation Command message of GUTI in this step and adopt realization such as other newly-increased message, correspondingly, subsequent step also needs to adopt corresponding massage pattern.The embodiment of the invention is that example describes with the heavy allocation request message of GUTI, as long as can carry the new GUTI that New MME distributes in above-mentioned message, all within the scope of embodiment of the invention protection

Further, the heavy request for allocation GUTI of GUTI in this step Reallocation Command message can also be sent by old side MME, correspondingly, when step 101 realizes that execution Handover finishes MME load balancing process, this old side MME need know that new side MME will keep the GUTI value of ISR state of activation and new side MME partition, specifically can pass through: new side MME need keep the information of ISR state of activation and newly assigned GUTI to be notified to old side MME new side MME sending when transmitting handoff response Forward Relocation Response message to old side MME.

For convenience of explanation, the embodiment of the invention is that example is set forth with new side MME to the heavy allocation request message of SGSN transmission GUTI.

After step 103:SGSN obtains the heavy allocation request message of the GUTI that receives new side MME transmission, after the state of inspection UE is Idle state, send paging Paging message to UE.

Wherein, to reside in the SGSN side with the UE free time be the explanation that example is carried out to present embodiment.

Step 104: because the resident SGSN again of UE side, UE sends the response of service request Service Request message as beep-page message to SGSN.

Further, if SGSN is when sending paging Paging message to UE in step 103, indicate when needing UE to reply Routing Area Update request RAU Request message as the response of this paging Paging message, in this step 104, UE can also send Routing Area Update request RAU Request message to the response of SGSN as beep-page message

After step 105:SGSN received service request Service Request message, record UE state transitions stopped paging Stop Paging message to connected state to new side MME transmission; And, carry the GUTI that new side MME distributes in this message, ISR sign and registration sign to the heavy assignment commands GUTI of UE transmission GUTI Reallocation Command message.

Wherein, this ISR sign is used to indicate UE to continue to keep the ISR state.If this message can also be set to not carry the ISR sign, then the UE acquiescence continues to keep the ISR state.Those skilled in the art can be known, can also realize in this message that notice UE realizes deexcitation ISR state, be specifically as follows and carry ISR Deactivation (going ISR to activate sign) realization in this message.

Wherein, the registration sign is used to notify UE when getting back to MME side initiation TAU flow process, need finish the registration of New MME to HSS, for example notify UE put Update Type for " ISR Synch " (perhaps equipment for other cause value for example: " Registration ") realize.

Further, transmit the heavy request for allocation GUTI of GUTI Reallocation Command message with SGSN to UE in this step and be embodied as example, in step 104, UE by Routing Area Update request RAU Request message to SGSN during as the response of beep-page message, this step 105 can also send to UE by SGSN and carry new GUTI, and the Routing Area Update of ISR sign and registration sign is accepted RAUAccept message and realized.Wherein, it should be noted that herein, SGSN is bringing UE by RAU Accept message with the GUTI that new side MME distributes, because under the normal condition, SGSN only can distribute P-TMSI to give UE, can increase the indication of cause value in original RAU message is because GUTI heavily distributes at this moment, shows that pass to UE this moment is GUTI rather than P-TMSI.That correspondingly, the user receives is GUTI.Otherwise, even UE can discern GUTI and P-TMSI, under this scene, may think the message cell error and refuse to accept RAU Accept message.Perhaps this moment GUTI Reallocation Command message being used as a cell is compressed in the RAU Accept message and passes to UE.Generally speaking, successfully obtain the method for the new GUTI of SGSN transmission, all contain within the protection range at the embodiment of institute of the present invention as long as realize UE.Be that the embodiment of the invention does not limit the mode that UE obtains the NewGUTI of new side MME distribution, can adopt above-mentioned involved SGSN by transmitting GUTI Reallocation Command or sending RAUAccept message, can also adopt following any mode: for example the scheme that the New GUTI of new side MME distribution brings UE:

1) brings UE by RAU Accept message with the New GUTI of New MME distributing user.Because under the normal condition, SGSN only can distribute P-TMSI to give UE,, show that pass to UE at this moment is GUTI rather than P-TMSI here so probably also need to identify especially.Can increase a cause value indication in RAU message is that the user receives is GUTI because GUTI heavily distributes at this moment.Otherwise, even UE can discern GUTI and P-TMSI, under this scene, may think the message cell error and refuse to accept RAU Accept message.

2) the New GUTI by RAU message transmission New MME distributing user brings UE.Carry the P-TMSI and the GUTI of SGSN distributing user in the message simultaneously.

3) or this moment GUTI Reallocation Command message is used as a cell and is compressed in the RAU Accept message and passes to UE.

4) give UE by transmitting GUTI Reallocation Command or TAU Accept message;

5) the New GUTI by P-TMSI Reallocation Command message transmission New MME distributing user brings UE.Only carry GUTI in the message.Because under the normal condition, SGSN only can distribute P-TMSI to give UE,, show that pass to UE at this moment is GUTI rather than P-TMSI here so probably also need to identify especially.Can increase a cause value indication in message is that the user receives is GUTI because GUTI heavily distributes at this moment.Otherwise, even UE can discern GUTI and P-TMSI, under this scene, may think the message cell error and refuse to accept RAUAccept message.

6) the New GUTI by P-TMSI Reallocation Command message transmission New MME distributing user brings UE.Carry P-TMSI and GUTI in the message simultaneously.

7) GUTI Reallocation Command message being used as a cell is compressed in the P-TMSI Reallocation Commandt message and passes to UE.

8) SGSN regenerates a new message, is used for transmitting the New GUTI of New MME distributing user exactly.

It may be noted that herein be, those skilled in the art can be known, at SGSN when UE sends GUTI, need be supporting transmission with NewTAI list and GUTI, the present invention program mainly describes round GUTI, is not to mean that New TAI list does not need to pass to UE, and promptly GUTI is that the main cell that our technical scheme need be handled not is unique cell, when UE sends GUTI, also need to send supporting cell at SGSN.

Step 106:UE replys GUTI to SGSN and has heavily assigned GUTI Reallocation Complete message.

Further, correspondingly accept RAUAccept message in above-mentioned Routing Area Update, UE finishes to SGSN answer route district and accepts RAU Complete message.

Step 107:SGSN replys GUTI to new side MME and has heavily assigned GUTI Reallocation Complete message.

Wherein, when the heavy request for allocation GUTI of GUTI in step 102 Reallocation Command message is sent by old side MME, correspondingly, SGSN replys GUTI to old side MME and has heavily assigned GUTI Reallocation Complete message in this step 107.

Wherein, because new side MME record is not also registered,, next UE need go the HSS registration in HSS when initiating the position renewal:

Step 108:UE sends tracing section updating TAU Request message to new side MME according to the registration sign of receiving, notifies new side MME registration to HSS.

Wherein, UE is when sending tracing section updating TAU Request message in this step, be specifically as follows UE and realize regularly triggering transmission tracing section updating TAU Request message according to the timer of setting, for example: being set at per 2 seconds just needs to send a tracing section updating TAU Request message.

Step 109: after new side MME receives the tracing section updating TAU Request message of UE transmission, send renewal position Update Location message and finish registration to HSS.

Wherein, carry MME Identity (new side MME sign) in the Update Location message of this renewal position, IMSI (custom IC, International Mobile Subscriber Identification Number), ME Identity (Mobile Equipment, hardware identifier) etc. information is to HSS, wherein, the information of above-mentioned UE can be specially by tracing section updating TAURequest message and carry, also can be for finishing in the MME load balancing process at execution Handover, new side MME obtains to old side MME, can also be for according to system's needs, disposed UE information in advance in each MME, the embodiment of the invention does not limit concrete mode and the method that new side MME obtains UE information.HSS finishes registration to new side MME according to this renewal position Update Location message.

Step 110:HSS sends canceling position Cancel Location message to old side MME.

, successfully realized under the scene of ISR activation to step 110 by above-mentioned steps 101, when UE resides in the SGSN side, the processing method of MME load balancing.

Referring to Fig. 4, the embodiment of the invention provides the information interaction schematic diagram of the processing method of load balancing, as shown in the figure,

The 1:MME load balance process, if Old MME has activated ISR, New MME obtains context and determines to keep ISR (S-GW does not change) later on, send the heavy request for allocation GUTI of GUTI Reallocation Command message (GUTI, TAI list is ISR) to setting up the related SGSN of ISR with Old MME before.The ISR indication keeps ISR to connect.Here ISR can be optional cell, keeps ISR if do not carry then can give tacit consent to continuation by SGSN.As for the ISR deexcitation, can in this message, notify (" ISR Deactivation "), also can notify by S-GW.

Here also can not adopt the heavy request for allocation GUTI Reallocation Command message of GUTI and adopt other newly-increased message, but need to carry the new GUTI that New MME distributes in the message.Subsequent step 7,8,9 also can adopt corresponding massage pattern.

2: if UE resides in the MME side, Idle state UE response beep-page message sends service request information to New MME;

3:New MME notice SGSN stops paging;

After 4:SGSN receives the heavy allocation request message of the GUTI of New MME transmission, check the state of UE, paging UE if UE is in Idle state.Traditional, UE carries out the response of service request flow process as paging, and more new technological process is in response also may to indicate the UE executing location here in message;

5: if UE resides in the SGSN side, response beep-page message transmission service request or Routing Area Update are to SGSN, and SGSN record UE state transitions is to connected state;

6:SGSN sends and stops beep-page message to New MME;

7:SGSN transmits the heavy allocation request message of GUTI or sends Routing Area Update and accepts message to UE, carries the new GUTI that New MME distributes in the message, and ISR indication UE continues to keep ISR.If do not carry the ISR cell, UE can give tacit consent to continuation and keep ISR.As for the ISR deexcitation, can in message, notify (" ISR Deactivation ").In addition network side in message, also need to indicate UE put Update Type for " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), to guarantee that next UE gets back to the MME side and initiates the TAU flow process and finish the registration of New MME to HSS.

8:UE answer GUTI Reallocation Complete message or route district finish and accept message to SGSN;

9:SGSN replys the GUTI Reallocation Complete message and gives New MME, and New MME record is not also registered in HSS, need go the HSS registration when next UE initiates the position renewal.

The RAT Tpye of 10:UE changes initiation TAU flow process, TAU Request message takes place and gives New MME in UE, UpdateType be set to " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), finish the registration of New MME to HSS;

11:New MME record is not also registered in HSS, sends Update Location message (MME Identity, IMSI, ME Identity) to HSS.

12:HSS sends Cancel Location message to Old MME.

In sum, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, when UE enables ISR and resides in the SGSN side, the MME load balancing adopts the processing mode of Handover, obtain the heavy request for allocation GUTI of the GUTI Reallocation Command message of MME side transmission by SGSN after, SGSN paging UE, the new GUTI that New MME is distributed gives UE by transmitting GUTI Reallocation Command or RAU Accept message informing, and indication UE gets back to MME next time and initiatively initiates the TAU flow process and finish the registration of New MME to HSS, thereby successfully realized under the scene of ISR activation, when UE resides in the SGSN side, the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS.Simultaneously, also solved effectively in this process and owing to MME migration has taken place, involved notice sets up with it how related SGSN of ISR keeps or the relevant treatment problem of deexcitation ISR.

Embodiment 2

Referring to Fig. 5, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, present embodiment adopts the processing mode of Handover with the MME load balancing, UE enables ISR and resides in the SGSN side is that example describes, be after SGSN notifies new side MME to know SGSN by the GUTI Reallocation Complete message and NewGUTI sent to UE with the difference of embodiment 1, initiatively be accomplished to the registration of HSS by new side MME oneself, this method thes contents are as follows:

Step 201: carry out Handover and finish MME load balancing process.

Wherein, after this step 201 was finished, new side MME need obtain the contextual information of UE, information such as the IMSI of UE and ME Identity.

Step 202: new side MME is known needs to keep ISR, to having carried out the related heavy request for allocation GUTI of the SGSN transmission GUTI Reallocation Command message of ISR with old side MME, carry the GUTI that new side MME distributes in this message, TAI list, the ISR sign, wherein ISR represents that needs keep ISR to connect.

Step 203:SGSN after the state of inspection UE is Idle state, sends paging Paging message to UE after obtaining the heavy request for allocation GUTI of the GUTI Reallocation Command message of receiving new side MME transmission.

Step 204:UE sends the response of service request Service Request message as paging Paging message owing to reside in the SGSN side to SGSN.

After step 205:SGSN received service request Service Request message, record UE state transitions stopped paging Stop Paging message to connected state to new side MME transmission; And, carry the GUTI that new side MME distributes in this message, the ISR sign to the heavy assignment commands GUTI of UE transmission GUTI Reallocation Command message.

Step 206:UE replys GUTI to SGSN and has heavily assigned GUTI Reallocation Complete message.

Step 207:SGSN replys GUTI to new side MME and has heavily assigned GUTI Reallocation Complete message.

Step 208: after new side MME receives that GUTI has heavily assigned GUTI Reallocation Complete message, send renewal position Update Location message, initiatively register to HSS to HSS.

Wherein, this renewal position Update Location message is carried new side MME Identity, information such as the IMSI of UE and ME Identity.

Step 209:HSS sends canceling position Cancel Location message to old side MME.

Successfully realized by above-mentioned steps 201 to step 209 under the scene of ISR activation, when UE resides in the SGSN side, the processing method of MME load balancing.

Referring to Fig. 6, the embodiment of the invention provides the information interaction schematic diagram of the method for terminal transfer under the ISR scene that realizes, as shown in the figure,

The 1:MME load balance process, if Old MME has activated ISR, New MME obtains context and determines to keep ISR (S-GW does not change) later on, send the heavy request for allocation GUTI of GUTI Reallocation Command message (GUTI, TAI list is ISR) to setting up the related SGSN of ISR with Old MME before.The ISR indication keeps ISR to connect.Here ISR can be optional cell, keeps ISR if do not carry then can give tacit consent to continuation by SGSN.As for the ISR deexcitation, can in this message, notify " ISR Deactivation ", also can notify by S-GW.

3:New MME notice SGSN stops paging;

6:SGSN sends and stops beep-page message to New MME;

7:SGSN transmits the heavy allocation request message of GUTI or Routing Area Update is accepted message to UE, carries the new GUTI that NewMME distributes in the message, and ISR indication UE continues to keep ISR.

8:UE replys the GUTI Reallocation Complete message or Routing Area Update is finished message to SGSN;

9:SGSN replys the GUTI Reallocation Complete message and gives New MME.

10:New MME is initiated to the register flow path of HSS, sends Update Location message (MME Identity, IMSI, ME Identity) to HSS.

11:HSS sends Cancel Location message to Old MME.

In sum, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, when UE enables ISR and resides in the SGSN side, the MME load balancing adopts the processing mode of Handover, obtain the GUTI Reallocation Command message that the MME side sends by SGSN, SGSN paging UE, the new GUTI that New MME is distributed gives UE by transmitting GUTI Reallocation Command or RAU Accept message informing, SGSN replys New MME with New GUTI notice UE, initiatively be accomplished to the registration of HSS by New MME oneself, thereby successfully realized under the scene of ISR activation, when UE resides in the SGSN side, the processing of MME load balancing has guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS.Owing to, avoided further, having improved the treatment effeciency of MME load balancing because accident causes UE can't trigger the problem that New MME finishes the HSS registration by the registration that New MME oneself initiatively is accomplished to HSS.Simultaneously, also solved effectively in this process and owing to MME migration has taken place, involved notice sets up with it how related SGSN of ISR keeps or the relevant treatment problem of deexcitation ISR.

Embodiment 3

Referring to Fig. 7, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, present embodiment adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process with the MME load balancing, UE enables ISR and resides in the SGSN side is that example describes, and this method thes contents are as follows:

Step 301: old side MME sends the heavy request for allocation GUTI of GUTI allocation Request message request for idle MME (being new side MME) according to the load condition between MME Pool and redistributes the GUTI value for the user, and this message comprises user ID IMSI, old side MME ID.

Wherein, the embodiment of the invention does not limit the mode that old side MME in this step obtains the load condition between MME Pool, for example, can get access to the load condition of each MME between MME Pool by base station eNodeB.

Step 302: after new side MME receives the heavy request for allocation GUTI of GUTI allocation Request message, preserve old side MME ID and distribute GUTI to the user, return the heavy assignment response GUTI of GUTI allocation Response message to old side MME, carry the GUTI value of distributing in this message into the user.

Step 303: after old side MME received the heavy assignment response GUTI of GUTI allocation Response message, MME sent paging to the SGSN that has set up the ISR association and triggers message, and this message is used to trigger SGSN paging UE.

Wherein, the triggering beep-page message in this step specifically also can be the heavy request for allocation GUTI of GUTI allocation Command message.

After step 304:SGSN receives that the paging of new side MME transmission triggers message, after the state of inspection UE is Idle state, send paging Paging message to UE.

Wherein, present embodiment triggers message with this paging and is sent as saying that example carries out by new side MME, and this paging triggers message old side MME that can also serve as reasons and sends.

Step 305:UE sends service request Service Request message response paging Paging message owing to reside in the SGSN side to SGSN.

Record UE state transitions arrived connected state after step 306:SGSN received service request Service Request message, and stopped paging Stop Paging message to new side MME transmission.

Wherein, to carry out the service request flow process with UE be that example describes as the response of paging to present embodiment.Here also can be in step 305 as required in paging Paging message indication UE executing location more new technological process is in response; Correspondingly, in step 306, UE need send Routing Area Update request RAU Request message to SGSN, and correspondingly, in the step 307, record UE state transitions was to connected state after SGSN received this Routing Area Update request RAU Request message.

Step 307: new side MME obtains the contextual information of UE according to old side MME ID that prestores and the user ID IMSI of UE to old side MME.Concrete steps are as follows:

A: new side MME sends context request Context Request message to old side MME.

B: old side MME sends context response Context Response message to new side MME, carries user's contextual information in this message, comprises bearer context, MM context, contents such as SGW signaling address and TEID;

C: new side MME sends context to old side MME and replys Context ACK message according to the old side MME ID that prestores;

D: after old side MME receives that Context ACK message replied in context, invalid with being changed to about the relevant information of SGW and HSS in the context of this UE.

Step 308: new side MME receive step 306 stop paging Stop Paging message after, transmit GUTI and heavily distribute GUTI allocation Command message to give SGSN, carry the new GUTI that New MME distributes in this message, the ISR sign.

Wherein, new side MME can also transmit the tracking area position and accept TAU Accept message to SGSN, utilizes this message to carry the new GUTI that New MME distributes, the ISR sign.

Step 309:SGSN sends the heavy assignment commands GUTI of GUTI allocation Command message to UE, carries the new GUTI that New MME distributes in the message, ISR sign and registration sign.

Wherein, corresponding with step 308, this step can also adopt SGSN by accepting TAU Accept message to UE forwarding Routing Area Update or transmitting the tracking area position and accept the realization of RAU Accept message.Carry the new GUTI that New MME distributes in the message, ISR indication UE continues to keep ISR.If do not carry the ISR cell, UE can give tacit consent to continuation and keep ISR.As for the ISR deexcitation, can in message, notify (" ISR Deactivation ").In addition network side in message, also need to indicate UE put Update Type for " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), to guarantee that next UE gets back to the MME side and initiates the TAU flow process and finish the registration of NewMME to HSS;

Step 310:UE replys GUTI to SGSN and has heavily assigned GUTI allocation Complte message.

Wherein, this step UE can also reply correspondingly that Routing Area Update is finished message or tracing section updating is finished message.

Step 311:SGSN replys the GUTI Reallocation Complete message to New MME, and New MME record is not also registered in HSS, need go the HSS registration when next UE initiates the position renewal.

Wherein, this step SGSN correspondingly can also finish message for replying the renewal of tracking area position.

Step 312:UE sends tracing section updating request TAU Request message according to the registration sign of receiving to new side MME, notifies new side MME registration to HSS.

Wherein, the specific implementation of this step can cause initiating the TAU flow process for the RAT Tpye change of UE, TAU Request message takes place and gives New MME in UE, Update Type be set to " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), finish the registration of NewMME to HSS.

Step 313: after new side MME receives the tracing section updating TAU Request message of UE transmission, send renewal position Update Location message and finish registration to HSS.

Wherein, carry MME Identity (new side MME sign) in the Update Location message of this renewal position, IMSI (custom IC, International Mobile Subscriber Identification Number), ME Identity (Mobile Equipment, hardware identifier) etc. information is to HSS, and HSS finishes registration to new side MME according to this renewal position Update Location message.

Step 314:HSS sends canceling position Cancel Location message to old side MME.

, successfully realized under the scene of ISR activation to step 314 by above-mentioned steps 301, when UE resides in the SGSN side, the processing method of MME load balancing.

Referring to Fig. 8, the embodiment of the invention provides the information interaction schematic diagram of the method for terminal transfer under the ISR scene that realizes, as shown in the figure,

1a: old side MME distributes the GUTI value for the user for idle MME transmission GUTI allocation Request message request according to the load condition between MME Pool, and this message comprises user ID IMSI, old side MME ID;

1b: after new side MME receives GUTI allocation Request message, preserve old side MME ID and distribute GUTI to send to old side MME to the user;

2: old side MME record UE state is an Idle state, paging UE;

3: if ISR activates, it is specific for the SGSN that sets up the ISR association that old MME sends message, and SGSN record UE state is then paging UE of Idle state;

4: old side MME brings UE by GUTI Reallocation Command message after receiving new GUTI value.In NAS message, carry GUTI, TAI list and give UE; In non-NAS message, carry old side MME ID and inform that to eNodeB eNodeB must not select this MME before this MME recovers to use;

5:UE carries newly assigned GUTI value transmission TAU Request and asks to eNodeB.ENodeB is addressed to new side MME according to the GUTI value and transmits the TAU request message that UE sends;

6:New MME notice SGSN stops paging;

After 7:SGSN receives the heavy allocation request message of the GUTI of New MME transmission, check the state of UE, paging UE if UE is in Idle state.Traditional, UE carries out the response of service request flow process as paging, and more new technological process is in response also may to indicate the UE executing location here in message;

8:UE resides in the SGSN side, and response beep-page message transmission service request or Routing Area Update are to SGSN, and SGSN record UE state transitions is to connected state;

9:SGSN sends and stops beep-page message to New MME;

10: if UE resides in the MME side, receive step 5 message, trigger step 10; If UE resides in the SGSN side, receive that step 9 message also triggers step 10.New MME satisfies the IMSI sign of carrying the user to old MME transmission context request message according to the old side MME ID in the first step;

11: old side MME brings UE with user's context in context response information, comprises bearer context, MM context, SGW signaling address and TEID;

12: the old MME ID that new side MME preserves according to previous first step sends context acknowledge message then to old side MME, and old side MME is invalid with being changed to about the relevant information of SGW and HSS in the context according to this information;

13: new side MME upgrades user context information among the SGW, comprises the MME address of this user's association;

14: new side MME upgrades the MME information of the user among the HSS and cancels old side MME information;

15: if UE resides in the MME side, new side MME sends tracking area and accepts message to UE, carries newly assigned GUTI and TAIlist and EPS loaded state;

16: if UE resides in the MME side, UE responds TAU Complete message and gives newMME;

17: if UE resides in the SGSN side, New MME receives step 9 message, and forwarding tracking area position accepts message or the heavy assignment messages of GUTI is given SGSN,, carry the new GUTI that New MME distributes in the message, ISR indication UE continuation keeps ISR.

18:SGSN transmits the heavy allocation request message of GUTI or the transmission Routing Area Update is accepted message or the forwarding tracing section updating is accepted message to UE, carries the new GUTI that New MME distributes in the message, and ISR indication UE continues maintenance ISR.

Wherein, if do not carry the ISR cell, UE can give tacit consent to continuation and keep ISR.As for the ISR deexcitation, can in message, notify (" ISR Deactivation ").In addition network side in message, also need to indicate UE put Update Type for " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), to guarantee that next UE gets back to the MME side and initiates the TAU flow process and finish the registration of New MME to HSS;

19:UE replys the GUTI Reallocation Complete message or Routing Area Update is finished message or tracing section updating is finished message to SGSN;

20:SGSN replys the GUTI Reallocation Complete message or tracing section updating is finished message to New MME, and New MME record is not also registered in HSS, need go the HSS registration when next UE initiates the position renewal;

The RAT Tpye of 21:UE changes initiation TAU flow process, TAU Request message takes place and gives New MME in UE, Update Type be set to " ISR Synch " (perhaps equipment for other cause value for example: " Registration "), finish the registration of New MME to HSS;

22:New MME record is not also registered in HSS, sends Update Location message (MME Identity, IMSI, ME Identity) to HSS.HSS sends Cancel Location message to Old MME.

In sum, the embodiment of the invention provides a kind of processing method of load balancing, when UE enables ISR and resides in the SGSN side, the MME load balancing adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process, UE enables ISR and resides in the SGSN side, and SGSN obtains the MME side and sends particular message (as triggering message) triggering SGSN paging Idle state UE.MME transmits GUTI Reallocation Command message or TAU Request message to SGSN, the new GUTI that SGSN distributes New MME passes through to transmit GUTI Reallocation Command or RAU Accept message or transmits TAU Accept message informing and give UE, and indication UE gets back to MME next time and initiates the TAU flow process and finish the registration of New MME to HSS, thereby successfully realized under the scene of ISR activation, when UE resides in the SGSN side, the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS.Simultaneously, also solved effectively in this process and owing to MME migration has taken place, involved notice sets up with it how related SGSN of ISR keeps or the relevant treatment problem of deexcitation ISR.

Embodiment 4

Referring to Fig. 9, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, present embodiment adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process with the MME load balancing, UE enables ISR and resides in the SGSN side is that example describes, be with the difference of embodiment 3, New MME initiatively registers to HSS, and this method thes contents are as follows:

Step 401: old side MME is according to the load condition between MME Pool, send the heavy request for allocation GUTI of GUTI allocation Request message request to the MME of free time (being new side MME) and redistribute the GUTI value for the user, this message comprises user ID IMSI, old side MME ID.

Step 402: after new side MME receives the heavy request for allocation GUTI of GUTI allocation Request message, preserve old side MME ID and distribute GUTI to the user, and return the heavy assignment response GUTI of GUTI allocation Response message to old side MME, carry the GUTI value of distributing in this message into the user.

Step 403: after old side MME received the heavy assignment response GUTI of GUTI allocation Response message, new side MME sent paging to the SGSN that has set up the ISR association and triggers message, and this message is used to trigger SGSN paging UE.

Wherein, this message specifically also can be the heavy assignment commands GUTI of GUTI allocation Command.

Step 404:SGSN receives that the paging that new side MME sends triggers message, after the state of inspection UE is Idle state, sends paging Paging message to UE.

Step 405:UE is owing to reside in the SGSN side, and UE sends service request Service Request message (or Routing Area Update request RAU Requst message) response paging Paging message to SGSN.

Step 406:, record UE state transitions arrived connected state after SGSN received this service request Service Request message, and stopped paging Stop Paging message to new side MME transmission.

Step 407: new side MME according to old side MME ID that prestores and the user ID IMSI of UE, obtains the contextual information of this UE after receiving and stopping paging Stop Paging message to old side MME.Be specially:

A: new side MME sends context request Context Request message to old side MME.

B: old side MME sends context response Context Response message to new side MME, carries user's contextual information in this message, comprises bearer context, MM context, contents such as SGW signaling address and TEID.

C: new side MME sends context to old side MME and replys ContextACK message according to the old side MME ID that prestores, and old side MME is invalid with being changed to about the relevant information of SGW and HSS in the context of this UE according to this information.

Step 408: new side MME upgrades user context information among the SGW according to the contextual information of the UE that obtains, comprises the MME address of this user's association; And initiatively register to HSS, HSS upgrades this user's MME information and cancels old side MME information.

Step 409: after new side MME receives and stops paging Stop Paging message, send the heavy request for allocation GUTI of GUTI allocation Command message, carry the GUTI that new side MME distributes in this message, the ISR sign to SGSN.

Wherein, new side MME can also transmit the tracking area position and accept TAU Accept message to SGSN, utilizes this message to carry the GUTI that new side MME distributes, the ISR sign.

Step 410:SGSN sends heavy assignment commands GUTI allocation Command message to UE, carries the GUTI that new side MME distributes in this message, the ISR sign.

Wherein, SGSN can also accept TAU Accept message or Routing Area Update and accepts RAU Accept message and realize this step by transmit the tracing section updating carry GUTI, the ISR sign that new side MME distributes to UE.

Step 411:UE replys GUTI and has heavily assigned GUTI allocation Complete message to SGSN.

After step 412:SGSN receives the GUTI Reallocation Complete message, transmit GUTI Reallocation Complete message (or TAU Complete message is finished in the renewal of tracking area position) to new side MME.

Successfully realized by above-mentioned steps 401 to step 412 under the scene of ISR activation, when UE resides in the SGSN side, the processing of MME load balancing.

Referring to Figure 10, the embodiment of the invention provides the information interaction schematic diagram of the method for terminal transfer under the ISR scene that realizes, as shown in the figure,

1a: old side MME disappears for idle MME transmission GUTI allocation Request according to the load condition between MME Pool;

The breath request distributes the GUTI value for the user, and this message comprises user ID IMSI, old side MME ID;

1b: after new side MME receives GUTI allocation Request message, preserve old side MME ID and distribute GUTI to the user

Send to old side MME;

2: old side MME record UE state is an Idle state, paging UE;

4: old side MME brings UE by GUTI Reallocation Command message after receiving new GUTI value.Message

In in NAS message, carry GUTI, TAI list and give UE; In non-NAS message, carry old side MME ID and inform that to eNB eNB must not select this MME before this MME recovers to use;

6:New MME notice SGSN stops paging;

9:SGSN sends and stops beep-page message to New MME;

15: if UE resides in the MME side, new side MME sends tracking area and accepts message to UE, carries newly assigned GUTI and TAI list and EPS loaded state;

16: if UE resides in the MME side, UE responds TAU Complete message and gives new MME;

17: if UE resides in the SGSN side, New MME receives step 9 message, and forwarding tracking area position accepts message or the heavy assignment messages of GUTI is given SGSN, carries the new GUTI that New MME distributes in the message, and ISR indication continuation keeps ISR;

18:SGSN transmits the heavy allocation request message of GUTI or the transmission Routing Area Update is accepted message or message is accepted to UE in forwarding tracking area position, carries the new GUTI that New MME distributes in the message, and ISR indication UE continues maintenance ISR.

19:UE replys the GUTI Reallocation Complete message or Routing Area Update is finished message or tracing section updating is finished to SGSN;

20:SGSN replys the GUTI Reallocation Complete message or the renewal of tracking area position is finished message to New MME.

In sum, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, when UE enables ISR and resides in the SGSN side, the MME load balancing adopts GUTI Reallocation Command message informing UE and triggers the processing mode that UE initiates the TAU flow process, UE enables ISR and resides in the SGSN side, and SGSN obtains the MME side and sends particular message (as triggering message) triggering SGSN paging Idle state UE.MME transmits GUTI Reallocation Command message or TAU Request message to SGSN, the new GUTI that SGSN distributes New MME passes through to transmit GUTI Reallocation Command or RAU Accept message or transmits TAU Accept message informing and give UE, and by the own registration that initiatively is accomplished to HSS of New MME realization, thereby successfully realized under the scene of ISR activation, when UE resides in the SGSN side, the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS.And, further, improved the treatment effeciency of MME load balancing because the own registration that initiatively is accomplished to HSS of New MME realization has avoided UE can't trigger the problem that New MME finishes the HSS registration.Simultaneously, also solved effectively in this process and owing to MME migration has taken place, involved notice sets up with it how related SGSN of ISR keeps or the relevant treatment problem of deexcitation ISR.

Under the scene that realizes the ISR activation, terminal is enabled the saving signaling ISR under the idle pulley, when the band of position of the place network side of terminal remains unchanged, realize the load balance process of this network side, the embodiment of the invention provides the method for terminal transfer under a kind of ISR of realization scene, this method thes contents are as follows: new side network element and old side network element carry out in the load balancing process, the notice terminal is carried out tracing section updating, obtain the global unique temporary identity that new side network element distributes by carrying out the tracing section updating terminal, and notify new side network element to register to attribution assigned user server HSS.Wherein, described network element is specially MME, or SGSN.Referring to embodiment 5, being specially the MME side with this network side is that example describes:

Embodiment 5

Referring to Figure 11, present embodiment provides the method for terminal transfer under a kind of ISR of realization scene, different with the foregoing description 1 to embodiment 4, the MME load balancing adopts the processing mode of Handover, UE resides in the MME side, if user's the band of position does not change in this process, network side needs proactive notification UE to initiate to need to carry out the registration of NewMME to HSS after the TAU flow process is finished migration so.This method thes contents are as follows:

Step 501, old side MME carry out load at needs and heavily divide timing, and the notice that sends a notification message association base station eNodeB switches the certain user, carries in this message and need carry out the user ID that load heavily distributes.

Step 502, eNodeB send handoff request Handover Required to old side MME according to user ID, carry serving MME sign or MME identification list (MME list) that eNodeB selects for the user in the message, Target ID is set to this eNodeB ID, for convenience of explanation, the embodiment of the invention with source eNodeB and target eNode B be same be example.

Step 503, old side MME select a new MME and send forwarding handoff request Forward Relocation Request to new side MME for the user according to new MME sign or MME identification list, and the contextual information that carries UE in this message comprises PGW address, PGW TEID (PGW bearing end slogan), SGW address, SGW TEID (SGW bearing end slogan).

Step 504, new side MME distribute a MME UE S1AP ID for the user and send handoff request Handover Request and carry SGW address and SGW TEID to eNodeB.

Step 505, eNodeB send switching request response Handover RequestAck and carry eNodeB UE S1AP ID to new side MME.

Step 506, new side MME send and transmit handoff response Forward Relocation Response message to old side MME.

Step 507, new side MME send switching command Handover Command to Target eNodeB (being source eNodeB), after eNodeB receives this switching command, this switching command Handover Command is transmitted to UE, and this switching command Handover Command is used to announce the follow-up necessary TAU of the execution flow process of UE.

Step 508, eNodeB send switching indication Handover Notify for new side MME.

Step 509, new side MME send the forwarding handoff response and finish Forward Relocation Complete message to old side MME.

Step 510, old side MME send to be transmitted handoff response and finishes and reply Forward Relocation Complete Ack message to new side MME, informs and receives that context transfer finishes message.

Wherein, if SGW changes, need to upgrade the bearer context information of SGW and PGW:

A, new side MME send to new SGW and upgrade context request Uapdate Bearer Request message.

B, new SGW send to PGW and upgrade context request Uapdate Bearer Request message.

C:PGW returns to new SGW and upgrades context response Uapdate Bearer Response message.

D: new SGW returns to new side MME and upgrades context response Uapdate Bearer Response message.

Step 511, user initiate TAU (Tracking Area Update, tracing section updating) flow process, New MME is registered among the HSS, and New MME also needs to distribute a new GUTI (Globally Unique Temporary Identity, global unique temporary identity) to the user.

Wherein, owing to carried the notice of necessary execution TAU flow process among the switching command Handover Command that the terminal use gets access in step 507, so in time user's the band of position does not change, the user still needs to carry out this step 511 and finishes the tracing section updating flow process.

Referring to Figure 12, provide the information interaction schematic diagram of the method for terminal transfer under a kind of ISR of realization scene.As shown in the figure, because among the S107b, eNodeB sends to UE and is used to announce UE at the follow-up switching command that must carry out the TAU flow process, therefore, guaranteed that UE user can initiate the TAU flow process, finished New MME is registered among the HSS, and the purpose of obtaining the new GUTI of New MME distribution.

The processing method of the load balancing that the embodiment of the invention provides, by when carrying out the MME load balancing, eNodeB sends to UE and is used to announce UE at the follow-up switching command that must carry out the TAU flow process, thereby guaranteed that UE user can initiate the TAU flow process, finish that New MME is registered among the HSS, and the purpose of obtaining the new GUTI of NewMME distribution.

Art technology can be known, adopt the foregoing description 1 as for the method that terminal transfer under the 5 realization ISR scenes that provide is provided, can realize in the MME load balance process process, enable the terminal transfer of ISR, because the situation and the MME of the load balancing of SGSN are similar, also adopt under the prerequisite that is similar to MME Pool load-balancing technique as SGSN, the method of utilizing the embodiment of the invention to provide, can also realize enabling in the SGSN load balance process process terminal transfer of ISR, promptly, under the ISR scene, utilize MME to assist SGSN to finish the processing of load balancing.Method is similar, repeats no more.

Embodiment 6

Referring to Figure 13, the embodiment of the invention provides a kind of mobile management device, and equipment comprises:

The paging module is used for after acquisition module gets access to global unique temporary identity call terminal;

Sending module is used for getting access to global unique temporary identity and the paging of paging module after terminal at acquisition module, and the global unique temporary identity that acquisition module is obtained sends to the terminal that the paging of paging module is arrived;

Reply module, be used for after sending module sends to terminal with global unique temporary identity, reply to the opposite end network side and finish message.

Wherein, further, sending module, the terminal that also is used for arriving to the paging of paging module sends the registration sign, and the registration sign is used for indicating terminal notice opposite end mobile management device and registers to attribution assigned user server HSS.

Wherein, further, equipment also comprises:

Send and receiver module, be used to generate and send global unique temporary identity; And be used to receive the message of finishing that the opposite end mobile management device replys;

Registering modules is used for when sending and after receiver module sent global unique temporary identity, finishing the registration to attribution assigned user server HSS.

Further, equipment also comprises:

The notice acquisition module is used to obtain the notice that terminal sends; Correspondingly, Registering modules is used for when sending and after receiver module sent global unique temporary identity, and the notice of obtaining according to acquisition module is to the registration of attribution assigned user server HSS.

Wherein, above-mentioned mobile management device is specially mobile management entity MME, or service GRPS support node SGSN.

In sum, the network element device that the embodiment of the invention provides, successfully realized under the scene of ISR activation, when UE enables ISR and resides in the SGSN side, realize the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS; Can realize the processing of SGSN load balancing equally.

Embodiment 7

The embodiment of the invention provides the treatment system of terminal transfer under a kind of ISR of realization scene, system comprises: terminal, first network side and second network side, and wherein, terminal is enabled the saving signaling ISR under the idle pulley that is used for first network side and second network side, and reside in second network side

Second network side is used to obtain the newly assigned global unique temporary identity of first network side; Call terminal, and send the terminal that global unique temporary identity arrives to paging; Also be used for finishing message to the answer of first network side;

First network side is used for providing newly assigned global unique temporary identity to second network side, receives second network side and replys message; Also be used to finish of the registration of the new network element device of first network side to attribution assigned user server HSS.

Terminal is used to obtain the global unique temporary identity that second network side sends.

Wherein, second network side also is used for the terminal that arrives to paging and sends the registration sign;

Correspondingly, terminal also is used to obtain the registration sign, notifies the registration of the new network element device of first network side to attribution assigned user server HSS according to the registration sign;

Correspondingly, the new network element device in first network side is used for the notice according to terminal, to the registration of attribution assigned user server HSS.

Wherein, above-mentioned first network side is specially the mobile management entity MME side, and correspondingly, second network side is specially service GRPS support node SGSN side;

Or;

First network side is specially the SGSN side; Correspondingly, second network side is specially the MME side.

In sum, the system of terminal transfer under the realization ISR scene that the embodiment of the invention provides, successfully realized under the scene of ISR activation, when UE enables ISR and resides in the SGSN side, realize the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS; Equally successfully realized under the scene of ISR activation the processing of SGSN load balancing.

Embodiment 8

The embodiment of the invention provides the system of terminal transfer under a kind of ISR of realization scene, and terminal equipment is enabled the saving signaling ISR under the idle pulley, and when the band of position of the place network side of terminal equipment remained unchanged, system comprised: announcement apparatus, terminal equipment;

Announcement apparatus is used for carrying out the load balancing process at the new side network element device and the old side network element device of network side, and the notice terminal equipment is carried out tracing section updating;

Terminal equipment is used for according to notice, obtains the global unique temporary identity that new side network element device distributes by carrying out tracing section updating, and notifies new side network element device to register to attribution assigned user server HSS.

Wherein, network side is specially the MME side, or the SGSN side; Accordingly, when this network side was the MME side, network element device was specially MME; When this network side for the SGSN side is, network element device is SGSN.

To sum up, the system that the embodiment of the invention provides, successfully realized under the scene of ISR activation, when terminal enable saving signaling ISR under the idle pulley, when residing in the MME side, when the band of position of described terminal remains unchanged, realize the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS; Can realize the processing of SGSN load balancing equally.

Embodiment 9

The embodiment of the invention provides a kind of terminal equipment, and terminal is positioned at second network side, and terminal comprises:

Acquisition module is used to obtain the global unique temporary identity that second network side sends, and global unique temporary identity is that the new side network element device by first network side distributes.

Equipment also comprises:

Second acquisition module is used to obtain the registration sign that second network side sends;

Notification module is used for the registration sign that obtains according to second acquisition module, notifies new network element device to register to attribution assigned user server HSS.

To sum up, the terminal that the embodiment of the invention provides, successfully realized under the scene of ISR activation, when terminal is enabled ISR and is resided in the SGSN side, realize the processing of MME load balancing, guaranteed that UE gets access to the GUTI sign of the new partition of MME side, has guaranteed simultaneously that also the new side MME of MME side is accomplished to the registration of HSS; Can realize the processing of SGSN load balancing equally.

" reception " speech in the embodiment of the invention can be understood as and initiatively obtains from other modules also can be to receive the information that other modules are sent.

It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, module in the accompanying drawing or flow process might not be that enforcement the present invention is necessary.

It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be merged into a module, also can further split into a plurality of submodules.

The invention described above embodiment sequence number is not represented the quality of embodiment just to description.

Part steps in the embodiment of the invention can utilize software to realize that corresponding software programs can be stored in the storage medium that can read, as CD or hard disk etc.

The above only is specific embodiments of the invention;, for those skilled in the art, not all under the prerequisite that does not break away from the principle of the invention in order to restriction the present invention; any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. method that realizes terminal transfer under the ISR scene, it is characterized in that, terminal is enabled the saving signaling ISR under the idle pulley of second network element of the old side network element that is used for first network side and second network side, and resides in described second network side, and described method comprises:

Wherein, when described old side network element is specially mobile management entity MME, described new side network element is new side MME, and when described second network element was specially SGSN, the step of the described terminal of described paging was specially:

2. the method for claim 1 is characterized in that, when described old side network element is specially mobile management entity MME, described new side network element is new side MME, when described second network element is specially SGSN,

Described second network element obtains the step of the newly assigned global unique temporary identity of new side network element of described first network side, is specially:

Described SGSN obtains from the heavy allocation request message of the sign of described new side MME, carries the global unique temporary identity that described new side MME distributes in the heavy allocation request message of described sign;

The step of message is finished in described answer, is specially: reply the sign Reallocation Complete message to described new side MME;

Or;

Described SGSN obtains from the heavy allocation request message of the sign of described old side MME, carries the global unique temporary identity that described new side MME distributes in the heavy allocation request message of described sign;

The step of message is finished in described answer, is specially: reply the sign Reallocation Complete message to described old side MME.

3. the method for claim 1 is characterized in that, when described old side network element is specially mobile management entity MME, described new side network element is new side MME, when described second network element is specially SGSN,

Described described global unique temporary identity is sent to the step of the terminal that paging arrives, is specially:

The terminal that described SGSN arrives to paging sends the heavy assignment command message of sign, carries global unique temporary identity and registration sign that described new side MME distributes in the heavy assignment command message of described sign;

Described step from described new side network element to the registration of attribution assigned user server HSS that finish is specially:

Described terminal sends notice according to described registration sign to described new side MME, and described new side MME is according to described notice, and HSS registers to attribution assigned user server.

4. the method for claim 1 is characterized in that, when described old side network element is specially MME, described new side network element is new side MME, when described second network element is specially SGSN,

The terminal that described SGSN arrives to paging sends the heavy assignment command message of sign, carries the global unique temporary identity that described new side MME distributes in the heavy assignment command message of described sign;

Message is finished in described answer, finishes the step of described new side network element to the registration of attribution assigned user server HSS, is specially:

Send the sign Reallocation Complete message to described new side MME, after described new side MME receives described sign Reallocation Complete message, initiatively register to attribution assigned user server HSS.

5. the method for claim 1 is characterized in that, when described old side network element is specially MME, described new side network element is new side MME, when described second network element is specially SGSN,

Described second network element obtains before the step of the newly assigned global unique temporary identity of new side network element of described first network side, also comprises:

After obtaining the global unique temporary identity of described new side MME distribution, notify described SGSN call terminal;

Before the described step that described global unique temporary identity is sent to the terminal that paging arrives, also comprise:

Described new side MME obtains the contextual information of the terminal that described paging arrives to described old side MME;

The terminal that described SGSN arrives to paging sends the heavy assignment command message of sign, carries described global unique temporary identity and registration sign in the heavy assignment command message of described sign;

Describedly finish described new network element and be specially to the step of the registration of attribution assigned user server HSS:

Described terminal sends notice according to described registration sign to described new side MME, and described new side MME registers to attribution assigned user server HSS according to described notice.

6. the method for claim 1 is characterized in that, when described old side network element is specially MME, described new side network element is new side MME, when described second network element is specially SGSN,

Described new side MME obtains the contextual information of the terminal that described paging arrives to described MME;

Described step from described new network element device to the registration of attribution assigned user server HSS that finish is specially:

After described new side MME gets access to the contextual information of described terminal, initiatively register to attribution assigned user server HSS;

The terminal that described SGSN arrives to paging sends the heavy assignment command message of sign, carries described global unique temporary identity in the heavy assignment command message of described sign.

7. the method for claim 1 is characterized in that, when the page response of receiving as described SGSN is Routing Area Update request RAU Request message,

To paging to terminal send Routing Area Update and accept message RAU Accept, described Routing Area Update is accepted to carry described global unique temporary identity among the message RAU Accept, or described Routing Area Update accepts to carry among the message RAU Accept described global unique temporary identity and registration sign.

8. the method for claim 1 is characterized in that, when described old side network element is specially SGSN, described new side network element is new side SGSN, when described second network element is specially MME,

To paging to the global unique temporary identity that terminal sends the registration sign and the new side SGSN of the described SGSN side obtained distributes;

Described step from described new network element to the registration of attribution assigned user server HSS that finish, be specially: described terminal sends notice according to described registration sign to described new side SGSN, and described new side SGSN registers to attribution assigned user server HSS according to described notice.

9. the method for claim 1 is characterized in that, when described old side network element is specially SGSN, described new side network element is new side SGSN, when described second network element is specially MME,

To paging to terminal send the global unique temporary identity that the new side SGSN obtain distributes;

Message is finished in described answer, finishes the step of described new network element to the registration of attribution assigned user server HSS, is specially:

Described new side SGSN obtains the message of finishing of described MME side answer, initiatively registers to attribution assigned user server HSS.

10. the method for claim 1 is characterized in that, when the band of position that described terminal is enabled place first network side of described ISR and described terminal remained unchanged, described method also comprised:

Carry out in the load balancing process at described new side network element and old side network element, notify described terminal to carry out tracing section updating;

Described terminal is obtained the global unique temporary identity that described new side network element distributes, and is notified described new side network element to register to attribution assigned user server HSS by carrying out tracing section updating.

11. a mobile management device is characterized in that, described equipment comprises:

12. equipment as claimed in claim 11, it is characterized in that, described sending module, also be used for: the terminal that arrives to the paging of described paging module sends the registration sign, and described registration sign is used to indicate described terminal to notify described opposite end mobile management device to register to attribution assigned user server HSS.

13. equipment as claimed in claim 11 is characterized in that, described equipment also comprises:

Registering modules is used for finishing the registration to attribution assigned user server HSS after described transmission and receiver module have sent described global unique temporary identity.

14. equipment as claimed in claim 13 is characterized in that, described equipment also comprises:

The notice acquisition module is used to obtain the notice that described terminal sends;

Described Registering modules is used for after described transmission and receiver module have sent described global unique temporary identity, and the notice of obtaining according to described acquisition module is to the registration of attribution assigned user server HSS.