CN101730084B

CN101730084B - Method for saving signalling and system thereof

Info

Publication number: CN101730084B
Application number: CN 200910211729
Authority: CN
Inventors: 胡伟华
Original assignee: Huawei Technologies Co Ltd
Current assignee: Nokia Technologies Oy
Priority date: 2008-03-19
Filing date: 2008-03-19
Publication date: 2013-11-06
Anticipated expiration: 2028-03-19
Also published as: CN101730084A

Abstract

The embodiment of the invention provides a method for saving a signalling, and a system thereof. The ISR method comprises the following steps: acquiring the ISR capacity of a target network mobility management network element; and setting the ISR state of user equipment in a target network according to the ISR capacity of the target network mobility management network element. The technical scheme provided by the embodiment of the invention can process the ISR state of the user equipment when the user equipment performs network switching.

Description

The method of saving signaling and system thereof

Technical field

The present invention relates to communication technical field, particularly method and the system thereof of a kind of saving signaling (ISR, Idle modesignalling reduction).

Background technology

In the overlapping or adjacent zone of different third generation partner programs (3GPP) inserting technology networks, the mobile subscriber changes connecting system at every turn, such as the Universal Terrestrial Radio Access Network (EUTRAN) from wireless access network/Universal Terrestrial Radio Access Network (GERAN/UTRAN) to evolution, perhaps from EUTRAN to GERAN/UTRAN, all need more new technological process of launch position, therefore can give core net and eat dishes without rice or wine to bring certain load.For avoiding above-mentioned signaling traffic load, optimize the mobility management mechanism between the 3GPP different access systems, 3GPP has proposed the ISR mechanism under the idle pulley, reduces the signaling traffic load that the mobile management flow process of subscriber equipment (UE, UserEquipment) between different access networks brought.mobile terminal is registered in generic service packet service support node (SGSN successively, Serving GPRS Support Node) and Mobility Management Entity (MME, Mobile Management Entity) after, enable ISR, Route Area (the RA at place when subscriber equipment does not leave its registration SGSN and MME, Routing Area) and tracking area (TA, Tracking Area), just do not need more new technological process of launch position, even the mobile subscriber is at 2G/3G and Long Term Evolution (LTE like this, Long Term Evolution) constantly change in the residential quarter, can not bring any signaling traffic load yet.Even the RA at user place or TA change, only otherwise change SGSN and MME, tracking area or Routing Area Update that subscriber equipment is initiated do not need to re-register SGSN or MME to HSS yet.Unaffected for the called service that guarantees the user simultaneously, gateway (SGW, Serving GateWay) needs mark to enable the mobile subscriber of ISR, when SGW receives user's downlink data or signaling, initiate simultaneously paging to SGSN and MME, in order to guarantee that the user can pagedly arrive.

In carrying out the invention process, the inventor finds that in prior art, there are the following problems at least: when subscriber equipment switches at network, can not process the ISR state of subscriber equipment.

Summary of the invention

The technical problem that the embodiment of the present invention will solve is to provide method and the system thereof that in a kind of handoff procedure, ISR processes, and can when subscriber equipment carries out the network switching, can process the ISR state of subscriber equipment.

For solving the problems of the technologies described above, the purpose of the embodiment of the present invention is achieved through the following technical solutions:

A kind of method of saving signaling comprises:

The destination service gateway obtains the ISR ability of objective network mobile management network element;

The destination service gateway is according to the ISR ability of the described objective network mobile management network element that obtains, subscriber equipment is arranged at the ISR of objective network state, specifically comprise: the ISR state of activation that determines whether to keep described subscriber equipment, and return and upgrade bearing response message to the objective network mobile management network element, if ISR continues to activate, comprise the information that indication ISR activates in described renewal bearing response message.

The embodiment of the present invention also provides a kind of method of saving signaling, comprising:

In handoff procedure, if the objective network mobile management network element is supported ISR, described objective network mobile management network element sends and upgrades bearing request message to the objective network gateway, including the information of the described objective network gateway maintenance of indication active user ISR state in described renewal bearing request message or indicating current renewal is the information of handoff procedure, so that described objective network gateway keeps the state of active user ISR constant according to this indication information;

Judge whether the objective network mobile management network element has the ISR tenability, if so, objective network mobile management network element excited users equipment is at the ISR of objective network;

To source network mobile management network element notifying user equipment in the ISR of objective network state of activation or result.

The embodiment of the present invention also provides the system of a kind of saving signaling ISR, comprising:

The objective network mobile management network element is for the ISR ability of objective network mobile management network element is provided in the subscriber equipment hand-off execution process;

The objective network gateway, the ISR ability that the objective network mobile management network element that provides according to described objective network mobile management network element in the subscriber equipment hand-off execution process is provided, controlling the objective network mobile management network element arranges at the ISR of objective network state subscriber equipment, specifically comprise: the ISR state of activation that determines whether to keep described subscriber equipment, and return and upgrade bearing response message to the objective network mobile management network element, if ISR continues to activate, comprise the information that indication ISR activates in described renewal bearing response message.

The embodiment of the present invention also provides a kind of mobile management network element, comprising:

Judging unit is used for judging whether the objective network mobile management network element has the ISR tenability;

Activate the unit, being used for working as judgment result is that of described judging unit is that the objective network mobile management network element has the ISR tenability, and excited users equipment is at the ISR of objective network;

Notification unit is used for to source network mobile management network element notifying user equipment in the ISR of objective network state of activation or result;

The Indication message transmitting element, have the ISR tenability or determine that excited users equipment is at the ISR of objective network at handoff procedure objective network mobile management network element if be used for, send and upgrade bearing request message to the objective network gateway, including the information of indicating target network service gateway maintenance active user ISR state in described renewal bearing request message or indicating current renewal is the information of handoff procedure.

Method and the system thereof of the saving signaling that provides by the embodiment of the present invention, can be according to the ISR ability of objective network mobile management network element, subscriber equipment is arranged at the ISR of objective network state, therefore can realize to process the ISR state of subscriber equipment when subscriber equipment carries out the network switching.

Description of drawings

Fig. 1 is the flow chart of method the first embodiment of ISR of the present invention;

Fig. 2 is the flow chart of method the second embodiment of ISR of the present invention;

Fig. 3 is the flow chart of method the 3rd embodiment of ISR of the present invention;

Fig. 4 is the flow chart of method the 4th embodiment of ISR of the present invention;

Fig. 5 is the flow chart of method the 5th embodiment of ISR of the present invention;

Fig. 6 is the flow chart of method the 6th embodiment of ISR of the present invention;

Fig. 7 is the flow chart of method the 7th embodiment of ISR of the present invention;

Fig. 8 is the flow chart of method the 8th embodiment of ISR of the present invention;

Fig. 9 is the flow chart of method the 9th embodiment of ISR of the present invention;

Figure 10 is the flow chart of method the tenth embodiment of ISR of the present invention;

Figure 11 is the flow chart of method the 11 embodiment of ISR of the present invention;

Figure 12 is the structure chart of the first embodiment of system of ISR of the present invention;

Figure 13 is the structure chart of the second embodiment of system of ISR of the present invention.

Embodiment

The embodiment of the present invention provides method and the system thereof of a kind of ISR.For making technical scheme of the present invention clearer, referring to accompanying drawing and enumerate embodiment, the present invention is described in more detail.

Please refer to Fig. 1, be the flow chart of method the first embodiment of ISR of the present invention.Support subscriber equipment in the present embodiment when source network activates ISR, switch to the ISR state of activation that keeps subscriber equipment after objective network.

In hand-off execution process before Route Area or tracing section updating process, the objective network mobile management network element sends when more new bearer request is to the objective network gateway, if the objective network mobile management network element has the ISR of support ability, carry the information that indication SGW keeps active user ISR state in upgrading bearing request message, SGW keeps the state of active user ISR constant according to this indication information.

In Route Area or tracing section updating process, the detailed process of ISR comprises:

Step 101: subscriber equipment transmission tracking area or Routing Area Update request message are to the objective network mobile management network element;

Described subscriber equipment sends in tracking area or Routing Area Update request message, can comprise the ISR active information of source network.

In the present embodiment, the ISR active information of source network can be user's temporary identity sign or the indication information of ISR state.

Step 102: objective network is carried out the safety function related procedure according to configuration.

Step 103: the objective network mobile management network element, know the ISR active information of source network.

The objective network mobile management network element can be known the ISR active information of source network from tracking area or Routing Area Update request message;

Also can be in carrying out security process, the source network mobile management network element of objective network mobile management network element and identical access technology is mutual, knows the ISR active information of source network when obtaining Safety Vectors.

Step 104: the objective network mobile management network element judges that whether subscriber equipment activates ISR at source network, if so, carry out step 105; If not, carry out step 109;

Described objective network mobile management network element judges whether subscriber equipment activates the concrete mode of ISR at source network and be:

Mode one: the objective network mobile management network element judges in the response message that comprises Safety Vectors that tracking area that subscriber equipment sends or Routing Area Update request message or source network mobile management network element send whether comprise that the different access technologies network is the temporary identity sign of user assignment, if, the objective network mobile management network element knows that subscriber equipment has activated ISR at source network, otherwise the objective network mobile management network element knows that subscriber equipment is at source network inactive I SR.

The subscriber equipment that activates ISR can be in request message, perhaps the source network mobile management network element can be in sending to the response message that comprises Safety Vectors of objective network mobile management network element, be included in simultaneously mobile management network element in two different access technologies networks and distribute to user's temporary identity sign, for example: S-TMSI (MME of EPS network distributes) and P-TMSI (SGSN of 2G or 3G distributes), and corresponding supporting TAI (tracking area identification of EPS network) and RAI (Routing Area Identifier of 2G or 3G network).

Mode two: the objective network mobile management network element judges in the response message that comprises Safety Vectors that tracking area that subscriber equipment sends or Routing Area Update request message or source network mobile management network element send whether comprise the ISR status indication information, and indication ISR state activates, if, the objective network mobile management network element knows that subscriber equipment has activated ISR at source network, otherwise the objective network mobile management network element knows that subscriber equipment is at source network inactive I SR.

Step 105: the objective network mobile management network element judges that whether the objective network mobile management network element has the ISR tenability, if so, carry out step 106; If not, carry out step 108;

Step 106: objective network mobile management network element excited users equipment is at the ISR of objective network, and the mutual indication information of ISR state separately between objective network mobile management network element and source network mobile management network element;

Specifically comprise:

1. the mobile management network element of objective network according to the tracking area identification in subscription request message or Routing Area Identifier, is inquired about DNS, the address that obtains the mobile management network element of source network different access technologies, and send context request to it;

If occur in switching before tracking area or Routing Area Update and be the switching between different access technologies, objective network also can directly use the address of source network mobile management network element in handoff procedure before this here.If in perhaps switching before this, objective network has obtained the address of the mobile management network element of source network different access technologies, be that the mobile management network element of the identical access technology of source network is issued in the forward handover request message of objective network mobile management network element and carried this information, objective network also can directly use the address of the mobile management network element of source network different access technologies here.Perhaps when carrying out security process, the objective network mobile management network element may need with the source network mobile management network element of identical access technology mutual, obtain Safety Vectors, can obtain simultaneously the mobile management network element address of source different access technologies, objective network also can directly use it here.

2. the mobile management network element of source network different access technologies returns to context response information;

3. the objective network mobile management network element returns to context acknowledgement message to the mobile management network element of source network different access technologies, comprises the indication information that subscriber equipment has activated at objective network ISR in context acknowledgement message.

Above-mentioned steps 1-3's is a kind of execution mode alternately, also can reach alternately by other means same purpose.In addition, step 1-3 can omit in the situation that the mobile management network element that does not require the source network different access technologies and objective network mobile management network element are set up mutually relatedly;

Step 107: the objective network mobile management network element judges that whether subscriber equipment successfully activates ISR at objective network, if so, carry out step 109; If not, carry out step 108;

Step 108: the objective network mobile management network element sends more new bearer request and to SGW, carries subscriber equipment at the indication information of the ISR of objective network state;

Particularly, in the more new bearer request that above-mentioned objective network mobile management network element sends, can comprise indication information, indication SGW subscriber equipment is at the ISR of objective network state; Perhaps only when subscriber equipment at the ISR of objective network state when activating, above-mentioned request message just comprises correspondingly, and ISR activates indication information, otherwise do not comprise, SGW is only when above-mentioned message comprises ISR activation indication information, and when indication ISR is activated state, think that just subscriber equipment is activation at the ISR of objective network state.

Step 109: the objective network mobile management network element initiates to upgrade the position process, to the address of user data management device registration oneself, obtains simultaneously user's subscription data.

Step 110: the objective network mobile management network element sends tracking area or Routing Area Update is accepted message to subscriber equipment, comprises the indication information of ISR state in message.

Step 111: subscriber equipment returning tracking district or Routing Area Update are completed message to the objective network mobile management network element.

The applicable objective network of routing update is 2G/3G, and target mobility management network element is the situation of SGSN; The applicable objective network of tracing section updating is LTE, and target mobility management network element is the situation of MME.

Please refer to Fig. 2, be the flow chart of method the second embodiment of ISR of the present invention.If when supporting in the present embodiment that source network and target networking have the ISR of support ability, no matter whether subscriber equipment activate ISR at source network, all can activate ISR after switching to objective network.

in hand-off execution process before Route Area or tracing section updating process, the objective network mobile management network element sends when more new bearer request is to the objective network gateway, if the objective network mobile management network element has the ISR of support ability, the objective network mobile management network element ISR that not deexcitation of indicating SGW has activated that sends a request message, and in the unactivated situation of current I SR, do not cover the bearer context information of the access technology side different with current access technology yet, if namely there is the bearer context information of different access technologies, the bearer context information that keeps simultaneously two access technologies.

Step 201: subscriber equipment transmission tracking area or Routing Area Update request message are to the objective network mobile management network element;

Step 202: objective network is carried out the safety function related procedure according to configuration.

Step 203: the objective network mobile management network element judges whether to have the ISR tenability, if so, carry out step 204; If not, carry out step 207;

Step 204: the objective network mobile management network element sends context request message to the mobile management network element of source network different access technologies;

The objective network mobile management network element comprised before the mobile management network element transmission context request message of source network different access technologies:

The mobile management network element of objective network is inquired about DNS according to the tracking area identification in subscription request message or Routing Area Identifier, the address that obtains the mobile management network element of source network different access technologies, and send context request to it;

If occur in switching before tracking area or Routing Area Update and be the switching between different access technologies, objective network also can directly use the address of the mobile management network element of source network different access technologies in handoff procedure before this here.If in perhaps switching before this, objective network has obtained the address of the mobile management network element of source network different access technologies, be that the mobile management network element of the identical access technology of source network is issued in the forward handover request message of objective network mobile management network element and carried this information, objective network also can directly use the address of the mobile management network element of source network different access technologies here.Perhaps when carrying out security process, the objective network mobile management network element may need with the source network mobile management network element of identical access technology mutual, obtain Safety Vectors, can obtain simultaneously the mobile management network element address of source different access technologies, objective network also can directly use it here.

Step 205: the mobile management network element of source network different access technologies returns to context response information, comprises the ISR tenability information of the mobile management network element of source network different access technologies;

Step 206: the objective network mobile management network element is according to the tenability of described source network ISR, determines that whether excited users equipment is at the ISR of objective network;

Step 204-206's is a kind of execution mode alternately, also can reach alternately by other means same purpose.

Step 207: the objective network mobile management network element sends more new bearer request and to SGW, carries subscriber equipment at the indication information of the ISR of objective network state;

Particularly, in the more new bearer request that above-mentioned objective network mobile management network element sends, can comprise indication information, indication SGW subscriber equipment is at the ISR of objective network state; Perhaps only when subscriber equipment at the ISR of objective network state when activating, above-mentioned request message just comprises correspondingly, and ISR activates indication information, otherwise do not comprise, SGW is only when above-mentioned message comprises ISR activation indication information, and when indication ISR state is activation, think that just subscriber equipment is activation at the ISR of objective network state.

Step 208: the objective network mobile management network element initiates to upgrade the position process, to the address of user data management device registration oneself, obtains simultaneously user's subscription data.

Step 209: the objective network mobile management network element sends tracking area or Routing Area Update is accepted message to subscriber equipment, comprises the indication information of ISR state in message.

Step 210: subscriber equipment returning tracking district or Routing Area Update are completed message to the objective network mobile management network element.

Please refer to Fig. 3, be the flow chart of method the 3rd embodiment of ISR of the present invention.In the present embodiment, subscriber equipment switches in the network of different 3GPP access technologies.The present embodiment only supports subscriber equipment when source network activates ISR, switches to the ISR state of activation that keeps subscriber equipment after objective network.

In hand-off execution process, the detailed process of ISR comprises:

Step 301: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding.

Step 302: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it, comprise the ISR active information of source network in message;

In the present embodiment, the ISR active information of source network is the indication information that the ISR state of subscriber equipment when source network activated.

Step 303: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 304: the objective network mobile management network element obtains the ISR active information of source network from described forward handover request message, and determines that excited users equipment is at the ISR of objective network;

Step 305: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element, and described forward switching response message comprises the indication information that subscriber equipment has activated at the ISR of objective network state;

Step 306: source network mobile management network element order source network begins to switch;

Step 307: source access network notifying user equipment begins to switch;

Step 308: the source access network begins forwarding data to objective network;

Step 309: subscriber equipment successfully accesses target access network;

Step 310: after the objective network Access Network is confirmed the subscriber equipment access, send switching notice to the mobile management network element of objective network;

Step 311: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element.

Step 312: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element.

Step 313: the objective network mobile management network element sends and upgrades bearing request message to objective network SGW, upgrades user plane bearer information, includes the indication information that the ISR state has activated in described renewal bearing request message;

Step 314: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 315: objective network SGW returns and upgrades bearing response message to the objective network mobile management network element.

In Routing Area Update after hand-off execution process or tracing section updating process, the mobile management network element of objective network comprises the indication information that the ISR state has activated in the tracking area that is handed down to subscriber equipment or Routing Area Update acceptance response message.

Mobile management network element in above-described embodiment can be Mobility Management Entity (MME) or general packet wireless business support node (SGSN) for described mobile management network element.

Please refer to Fig. 4, be the flow chart of method the 4th embodiment of ISR of the present invention.In the present embodiment, subscriber equipment switches in the network of different 3GPP access technologies.When the present embodiment supported that source network and target networking have the ISR of support ability, no matter whether subscriber equipment activated ISR at source network, all can activate ISR after switching to objective network.

In hand-off execution process, the detailed process of ISR comprises:

Step 401: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding;

Step 402: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it, comprise the ISR active information of source network in message;

In the present embodiment, the ISR active information of source network is that subscriber equipment has the indication information of the tenability of ISR activation at source network.

Step 403: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 404: the objective network mobile management network element obtains the ISR active information of source network from described forward handover request message, and determines that excited users equipment is at the ISR of objective network;

Step 405: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element, and described forward switching response message comprises the indication information that subscriber equipment has activated at the ISR of objective network state;

Step 406: source network mobile management network element order source network begins to switch;

Step 407: source access network notifying user equipment begins to switch;

Step 408: the source access network begins forwarding data to objective network;

Step 409: subscriber equipment successfully accesses target access network;

Step 410: after the objective network Access Network is confirmed the subscriber equipment access, send switching notice to the mobile management network element of objective network;

Step 411: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element.

Step 412: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element.

Step 413: the objective network mobile management network element sends and upgrades bearing request message to objective network SGW, upgrades user plane bearer information, includes the ISR state in described renewal bearing request message and has activated indication information;

Step 414: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 415: objective network SGW returns and upgrades bearing response message to the objective network mobile management network element.

Please refer to Fig. 5, be the flow chart of method the 5th embodiment of ISR of the present invention.In the present embodiment, ISR mechanism does not require and sets up association between source network mobile management net element and objective network mobile management net element.The present embodiment supports that subscriber equipment activates at source network ISR, continues to keep the ISR state of activation when switching to objective network.

In hand-off execution process, the detailed process of ISR comprises:

Step 501: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding.

Step 502: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it;

Step 503: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 504: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element;

Step 505: source network mobile management network element order source network begins to switch;

Step 506: source access network notifying user equipment begins to switch;

Step 507: the source access network begins forwarding data to objective network;

Step 508: subscriber equipment successfully accesses target access network;

Step 509: after the objective network Access Network is confirmed the subscriber equipment access, send switching notice to the mobile management network element of objective network;

Step 510: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element.

Step 511: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element.

Step 512: the objective network mobile management network element send to upgrade bearing request message to objective network SGW, upgrades user plane bearer information, and described renewal bearing request message has and comprises objective network mobile management network element ISR tenability information in target;

Step 513: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 514: objective network SGW is according to objective network mobile management network element ISR tenability, determine whether to keep the ISR state of activation of subscriber equipment, and return and upgrade bearing response message to the objective network mobile management network element, if ISR continues to activate, comprise the information that indication ISR activates in response message.

In Routing Area Update after hand-off execution process or tracing section updating process, the mobile management network element of objective network comprises the indication information of ISR state in the tracking area that is handed down to subscriber equipment or Routing Area Update acceptance response message.

Please refer to Fig. 6, be the flow chart of method the 6th embodiment of ISR of the present invention.

In handoff procedure, the detailed process of ISR comprises:

Step 601: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding.

Step 602: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it, comprise the ISR active information of source network in described forward handover request message;

In the present embodiment, the indication information that the ISR active information of source network can the ISR state when the source network have activated for subscriber equipment.

Step 603: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 604: the objective network mobile management network element obtains the ISR active information of source network from described forward handover request message;

Step 605: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element;

Step 606: source network mobile management network element order source network begins to switch;

Step 607: the source network notifying user equipment begins to switch;

Step 608: source network begins forwarding data to objective network;

Step 609: subscriber equipment successfully accesses objective network;

Step 610: after objective network is confirmed the subscriber equipment access, send switching notice to the objective network mobile management network element;

Step 611: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element;

Step 612: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element;

Step 613: the objective network mobile management network element sends and upgrades bearing request message to objective network SGW, upgrades user plane bearer information;

If the objective network mobile management network element determines that excited users equipment is at the ISR of objective network, include the information that indication SGW keeps active user ISR state in described renewal bearing request message, SGW keeps the state of active user ISR constant according to described indication information, described indication can directly indicate SGW to keep user ISR state constant, also can indicate current renewal is handoff procedure, indirectly indicates SGW to keep user's ISR state constant.

Step 614: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 615: objective network SGW returns and upgrades bearing response message to the objective network mobile management network element.

Please refer to Fig. 7, be the flow chart of method the 7th embodiment of ISR of the present invention.

Step 701: subscriber equipment transmission tracking area or Routing Area Update request message are to the objective network mobile management network element;

Step 702: objective network is carried out the safety function related procedure according to configuration.

Step 703: the objective network mobile management network element judges that whether subscriber equipment activates ISR at source network, if so, carry out step 704; If not, carry out step 708;

In the present embodiment, the objective network mobile management network element judges that the mode whether source network activates ISR is:

In forward handover request message according to the transmission of source network mobile management network element, whether comprise the status indication information of ISR, and whether the described ISR of comprising status indication information indicates the ISR state to activate.

Step 704: the objective network mobile management network element judges that whether the objective network mobile management network element has the ISR tenability, if so, carry out step 705; If not, carry out step 708;

Step 705: objective network mobile management network element excited users equipment is at the ISR of objective network, and the mutual indication information of ISR state separately between objective network mobile management network element and source network mobile management network element;

Specifically comprise:

Step 706: the objective network mobile management network element judges that whether subscriber equipment successfully activates ISR at objective network, if so, carry out step 708; If not, carry out step 707;

Step 707: the objective network mobile management network element sends more new bearer request and to SGW, carries subscriber equipment at the indication information of the ISR of objective network state;

Step 708: the objective network mobile management network element initiates to upgrade the position process, to the address of user data management device registration oneself, obtains simultaneously user's subscription data;

Step 709: the objective network mobile management network element sends tracking area or Routing Area Update is accepted message to subscriber equipment, comprises the indication information of ISR state in message;

Step 710: subscriber equipment returning tracking district or Routing Area Update are completed message to the objective network mobile management network element.

Please refer to Fig. 8, be the flow chart of method the 8th embodiment of ISR of the present invention.Substantially similar with aforementioned the 6th embodiment, the mode that obtains source network ISR active information in handoff procedure is different.

In handoff procedure, the detailed process of ISR comprises:

Step 801: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding.

Step 802: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it;

Step 803: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 804: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element;

Step 805: source network mobile management network element order source network begins to switch;

Step 806: source access network notifying user equipment begins to switch;

Step 807: the source access network begins forwarding data to objective network;

Step 808: subscriber equipment successfully accesses target access network;

Step 809: after the objective network Access Network is confirmed the subscriber equipment access, send switching notice to the mobile management network element of objective network;

Step 810: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element.

Step 811: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element.

Step 812: the objective network mobile management network element sends and upgrades bearing request message to objective network SGW, upgrades user plane bearer information;

If the objective network mobile management network element is supported ISR, including the information of indication SGW maintenance active user ISR state in described renewal bearing request message or including the current flow process of indication SGW is the information of handoff procedure.SGW returns to the renewal bearing response message, comprises the user in message at the ISR of source network active information, and according to shown in indication, keep the current ISR state of user constant.

Step 813: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 814: objective network SGW returns and upgrades bearing response message to the objective network mobile management network element.

Route Area or tracing section updating process are identical with front embodiment, no longer be repeated in this description, just the objective network mobile management network element judges whether source network activates the mode of ISR, is according to step 812 in aforementioned switching flow, indicates from the ISR active information that source network obtains.

Please refer to Fig. 9, be the flow chart of method the 9th embodiment of ISR of the present invention.In handoff procedure, do not require that source network provides the user at the ISR of source network active information, if the network support ISR of target side, with regard to active and source network interaction, to activate ISR.

In handoff procedure, the detailed process of ISR comprises:

Step 901: source network sends handover request message to the source network mobile management network element, requires to begin to switch, and carries the bearer context that needs forwarding.

Step 902: the source network mobile management network element, select target network mobility managed network element, and send forward handover request message to it;

Step 903: the objective network mobile management network element is selected an objective network SGW, and the objective network mobile management network element is for switching the corresponding bearing resource of user assignment and data retransmission resource;

Step 904: the objective network mobile management network element returns to the forward switching response message to the source network mobile management network element;

Step 905: source network mobile management network element order source network begins to switch;

Step 906: source access network notifying user equipment begins to switch;

Step 907: the source access network begins forwarding data to objective network;

Step 908: subscriber equipment successfully accesses target access network;

Step 909: after the objective network Access Network is confirmed the subscriber equipment access, send switching notice to the mobile management network element of objective network;

Step 910: the objective network mobile management network element sends forward handoff completion message notification source network mobility managed network element.

Step 911: the source network mobile management network element returns to the forward switching and completes acknowledge message to the objective network mobile management network element.

Step 912: the objective network mobile management network element sends and upgrades bearing request message to objective network SGW, upgrades user plane bearer information;

If the objective network mobile management network element is supported ISR, include the information that indication SGW keeps active user ISR state in described renewal bearing request message, SGW keeps the state of active user ISR constant according to this indication information.(this indication can keep user ISR state constant for showing indication SGW, and also can indicate current renewal is handoff procedure, indirectly indicates SGW to keep user's ISR state constant.)

Step 913: objective network SGW starting update load bearing process, upgrade beared information on PDN GW, such as user's access network type etc.;

Step 914: objective network SGW returns and upgrades bearing response message to the objective network mobile management network element.

Please refer to Figure 10, be the flow chart of method the tenth embodiment of ISR of the present invention.In handoff procedure, do not require that source network provides the user at the ISR of source network active information, if the network support ISR of target side, with regard to active and source network interaction, to activate ISR.

Step 1001: subscriber equipment transmission tracking area or Routing Area Update request message are to the objective network mobile management network element;

Step 1002: objective network is carried out the safety function related procedure according to configuration.

Step 1003: the objective network mobile management network element judges that whether the objective network mobile management network element has the ISR tenability, if so, carry out step 1004; If not, carry out step 1007;

Step 1004: objective network mobile management network element excited users equipment is at the ISR of objective network, and the mutual indication information of ISR state separately between objective network mobile management network element and source network mobile management network element;

Specifically comprise:

Step 1005: the objective network mobile management network element judges that whether subscriber equipment successfully activates ISR at objective network, if so, carry out step 1007; If not, carry out step 1006;

The concrete mode that judges that whether subscriber equipment successfully activates ISR at objective network comprises and being not limited to:

The source network mobile management network element returns to the indication information that source is supported ISR or activated ISR in step 1004 mutual, objective network judgement ISR activates successfully, otherwise judges that ISR activates unsuccessfully.

Step 1006: the objective network mobile management network element sends more new bearer request and to SGW, carries subscriber equipment at the indication information of the ISR of objective network state;

Step 1007: the objective network mobile management network element initiates to upgrade the position process, to the address of user data management device registration oneself, obtains simultaneously user's subscription data;

Step 1008: the objective network mobile management network element sends tracking area or Routing Area Update is accepted message to subscriber equipment, comprises the indication information of ISR state in message;

Step 1009: subscriber equipment returning tracking district or Routing Area Update are completed message to the objective network mobile management network element.

Please refer to Figure 11, be the flow chart of method the 11 embodiment of ISR of the present invention.If when supporting in the present embodiment that source network and target networking have the ISR of support ability, no matter whether subscriber equipment activate ISR at source network, all may activate ISR after switching to objective network.

Step 1101: subscriber equipment transmission tracking area or Routing Area Update request message are to the objective network mobile management network element;

Step 1102: objective network is carried out the safety function related procedure according to configuration.

Step 1103: the objective network mobile management network element judges whether to have the ISR tenability, if so, carry out step 1104; If not, carry out step 1108;

Step 1104: the objective network mobile management network element sends context request message to the mobile management network element of source network different access technologies;

Step 1105: carry out alternately with SGW on the mobile management network element of source network different access technologies, notice SGW sets up ISR, and returning to context response information to the objective network mobile management network element, the mobile management network element that described context response information comprises the source network different access technologies activates the result of ISR and state information etc.; Perhaps, the mobile management network element of source network different access technologies directly returns to context response information to the objective network mobile management network element, and described context response information comprises the resource information that source network distributes for activating ISR.

Step 1106: the information in the context response information that the objective network mobile management network element returns according to described source network determines that whether excited users equipment is at the ISR of objective network; Be successfully such as the source network that comprises in described message activates the ISR result, perhaps comprised the resource information that source network distributes for activating ISR, the objective network mobile management network element determines to activate ISR, otherwise does not determine to activate ISR.

Step 1104-1106's is a kind of execution mode alternately, also can reach alternately by other means same purpose.

Step 1107: the objective network mobile management network element sends more new bearer request and to SGW, carries subscriber equipment at the indication information of the ISR of objective network state; Particularly, in the more new bearer request that above-mentioned objective network mobile management network element sends, can comprise indication information, indication SGW subscriber equipment is at the ISR of objective network state; Perhaps only when subscriber equipment at the ISR of objective network state when activating, above-mentioned request message just comprises correspondingly, and ISR activates indication information, otherwise do not comprise, SGW is only when above-mentioned message comprises ISR activation indication information, and when indication ISR state is activation, think that just subscriber equipment is activation at the ISR of objective network state.

If in abovementioned steps 1105, what source network returned is that source network is to activate the resource information that ISR distributes, and above-mentioned more new bearer request comprises this information.

Step 1108: the objective network mobile management network element initiates to upgrade the position process, to the address of user data management device registration oneself, obtains simultaneously user's subscription data.

Step 1109: the objective network mobile management network element sends tracking area or Routing Area Update is accepted message to subscriber equipment, comprises the indication information of ISR state in message.

Step 1110: subscriber equipment returning tracking district or Routing Area Update are completed message to the objective network mobile management network element.

Please refer to Figure 12, be the structure chart of the first embodiment of system of ISR of the present invention.

The system of ISR comprises objective network mobile management network element 61, objective network gateway 62, subscriber equipment 63, source network mobile management network element 64.

Described subscriber equipment 63 be used for to send the tracing section updating request message of the ISR active information that comprises source network or Routing Area Update request message to objective network mobile management network element 61.

Described objective network mobile management network element 61, be used for obtaining from subscriber equipment 63 the ISR active information of source network, ISR active information according to the described source network that obtains, subscriber equipment is arranged at the ISR of objective network state, and with the subscriber equipment that arranges at the ISR of objective network state notifying to objective network gateway 62;

Described mobile management network element may further include:

Acquiring unit 611 is for the ISR active information that obtains source network;

Described acquiring unit may further include:

The subscriber equipment acquiring unit is used for the ISR active information that obtains source network from tracing section updating request message or the Routing Area Update request message of subscriber equipment transmission.

Setting unit 612, ISR active information for the source network that obtains according to described acquiring unit 611, subscriber equipment is arranged at the ISR of objective network state, and with the subscriber equipment that arranges at the ISR of objective network state notifying to objective network gateway 62.

Described setting unit may further include:

Judging unit, the ISR active information for the source network that obtains according to described acquiring unit judges whether described subscriber equipment has activated ISR at source network, and judges whether described mobile management network element has the ISR tenability;

Activate the unit, be used for having activated ISR when the subscriber equipment that judgment result is that of described judging unit at source network, and described mobile management network element has the ISR tenability, excited users equipment is at the ISR of objective network;

Notification unit, the subscriber equipment that is used for activating the unit setting at the ISR of objective network state notifying to objective network gateway and/or source network mobile management network element and/or subscriber equipment.

Described setting unit can further include:

The Indication message transmitting element, if the objective network mobile management network element has the ISR tenability or determines that excited users equipment is at the ISR of objective network, send and upgrade bearing request message to the objective network gateway, including the information of indicating target network service gateway maintenance active user ISR state in described renewal bearing request message or indicating current renewal is the information of handoff procedure.

Described objective network gateway 62 is used for recording the subscriber equipment of described objective network mobile management network element 61 settings at the ISR of objective network state.

Described source network mobile management network element 64, be used for and the objective network mobile management network element between the mutual indication information of ISR state separately.

Please refer to Figure 13, be the structure chart of the second embodiment of system of ISR of the present invention.

The system of ISR comprises objective network mobile management network element 71, objective network gateway 72, source network mobile management network element 73.

Described source network mobile management network element 73 is for the ISR active information of source network is provided to objective network mobile management network element 71.

Described objective network mobile management network element 71, be used for obtaining from source network mobile management network element 73 the ISR active information of source network, ISR active information according to the described source network that obtains, subscriber equipment is arranged at the ISR of objective network state, and with the subscriber equipment that arranges at the ISR of objective network state notifying to objective network gateway 72 and/or source network mobile management network element and/or subscriber equipment;

Described mobile management network element may further include:

Acquiring unit 711 is for the ISR active information that obtains source network;

Described acquiring unit may further include:

The source network acquiring unit is for obtain the ISR active information of source network from source network.

Setting unit 712, ISR active information for the source network that obtains according to described acquiring unit 711, subscriber equipment is arranged at the ISR of objective network state, and with the subscriber equipment that arranges at the ISR of objective network state notifying to objective network gateway 72 and/or source network mobile management network element 73 and/or subscriber equipment.

Described setting unit may further include:

Judging unit, the ISR active information for the source network that obtains according to described acquiring unit judges whether source network has the ISR tenability;

Activate the unit, be used for having the ISR tenability when the source network that judgment result is that of described judging unit, excited users equipment is at the ISR of objective network;

Described setting unit can further include:

Described objective network gateway 72 is used for recording the subscriber equipment of described objective network mobile management network element 71 settings at the ISR of objective network state.

In addition, the embodiment of the present invention also provides a kind of mobile management network element, comprising:

Notification unit is used for to source network mobile management network element notifying user equipment in the ISR of objective network state of activation or result.

Described mobile management network element can also comprise:

Secondly, the embodiment of the present invention also provides a kind of mobile management network element, comprising:

Judging unit is used for according to ISR tenability or the ISR state of activation of source network, judging whether that excited users equipment is at the ISR of objective network when the objective network mobile management network element has the ISR tenability;

Activate the unit, be used for when described judging unit judgment result is that source network has the ISR tenability or activated ISR the time, excited users equipment is at the ISR of objective network.

Described mobile management network element can also comprise:

In addition, the embodiment of the present invention also provides the system of a kind of saving signaling ISR, and it comprises:

The objective network mobile management network element is for the ISR ability that the objective network mobile management network element is provided;

The objective network gateway for the ISR ability of the objective network mobile management network element that provides according to described objective network mobile management network element, is controlled the objective network mobile management network element subscriber equipment is arranged at the ISR of objective network state.

Described objective network gateway obtains the ISR ability of objective network mobile management network element from the renewal user plane bearer information that the objective network mobile management network element sends.

Method and the system thereof of the saving signaling ISR that provides by the embodiment of the present invention, can be according to the ISR ability of ISR active information or the objective network mobile management network element of source network, subscriber equipment is arranged at the ISR of objective network state, therefore can realize to process the ISR state of subscriber equipment when subscriber equipment carries out the network switching.

Above method and system thereof to a kind of ISR provided by the present invention is described in detail, used specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand disclosed technical scheme; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. the method for a saving signaling ISR, is characterized in that, comprises in the subscriber equipment hand-off execution process:

Described destination service gateway arranges at the ISR of objective network state described subscriber equipment according to the ISR ability of described objective network mobile management network element;

Described described subscriber equipment is arranged at the ISR of objective network state, comprising:

Determine whether keep the ISR state of activation of described subscriber equipment, and return and upgrade bearing response message to described objective network mobile management network element, if ISR continues to activate, comprise the information that indication ISR activates in described renewal bearing response message.

2. the method for ISR according to claim 1, is characterized in that, the described concrete mode of ISR ability of obtaining the objective network mobile management network element is:

Obtain the ISR ability of objective network mobile management network element from the renewal user plane bearer information that the objective network mobile management network element sends.

3. the method for ISR according to claim 1, is characterized in that, described method also comprises:

If the objective network mobile management network element is supported ISR, the objective network mobile management network element sends and upgrades bearing request message to the objective network gateway, and including the information of indicating target network service gateway maintenance active user ISR state in described renewal bearing request message or indicating current renewal is the information of handoff procedure;

The objective network gateway keeps the state of active user ISR constant according to this indication information.

4. the method for a saving signaling ISR, is characterized in that, comprising:

Described objective network mobile management network element judges whether described objective network mobile management network element has the ISR tenability, and if so, described objective network mobile management network element excited users equipment is at the ISR of objective network;

Described objective network mobile management network element to source network mobile management network element notifying user equipment in the ISR of objective network state of activation or result.

5. the method for ISR according to claim 4, is characterized in that, described method also comprises:

Described objective network mobile management net element with the subscriber equipment of described setting at the ISR of objective network state notifying to objective network gateway and/or subscriber equipment.

6. the system of a saving signaling ISR, is characterized in that, comprising:

the objective network gateway, the ISR ability that the objective network mobile management network element that provides according to described objective network mobile management network element in the subscriber equipment hand-off execution process is provided, controlling the objective network mobile management network element arranges at the ISR of objective network state subscriber equipment, wherein, described subscriber equipment is arranged at the ISR of objective network state, comprise: the ISR state of activation that determines whether to keep described subscriber equipment, and return and upgrade bearing response message to the objective network mobile management network element, if ISR continues to activate, comprise the information that indication ISR activates in described renewal bearing response message.

7. a mobile management network element, is characterized in that, comprising: