CN101304604A

CN101304604A - Method for switching access terminal between signaling wireless network controllers

Info

Publication number: CN101304604A
Application number: CNA2007101062147A
Authority: CN
Inventors: 黄龙贵; 钟鑫; 刘继兴; 李志明; 王洁; 赵洁
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-05-11
Filing date: 2007-05-11
Publication date: 2008-11-12

Abstract

The invention relates to the field of wireless communication and discloses a method for switching an access terminal among signaling wireless network controllers, thus being capable of realizing the switch function in the SRNC under the condition of using only one SRNC special route. When in switch in the SRNC, various eBS modify a route mapping relation table in an activation set of an AT to be switched, the SRNC special route of the AT is modified to an ANID of the target SRNC from the corresponding ANID and then the AT passes through a signaling route transmitted by the SRNC special route to the target SRNC according to the route mapping relation table after the modification. When the AT receives a UAT1 message which is re-assigned by the AT of the target SRNC, the route mapping relation table is modified, and the SRNC special router of the AT is modified to the ANID of the SRNC by the corresponding ANID. The method can issue the switch in the SRNC by the service eBS of the AT or the source SRNC.

Description

The method that accesses terminal and between signaling wireless network controller, switch

Technical field

The present invention relates to wireless communication field, particularly handoff technique.

Background technology

At present, the 3G (Third Generation) Moblie technology is ripe gradually commercial, third generation partner program 2 (3rdGeneration Partnership Project2, abbreviation " 3GPP2 ") CDMA 2000 (the CodeDivision Multiple Access 2000 that proposes, abbreviation " CDMA2000 ") the data-optimized evolution of 1X (1XEvolution-Data Only is called for short " 1XEV-DO ") can provide competitive wireless access system in the coming years.But want to keep following 10 years or the competitiveness in decades, then need to introduce new wireless access technology.At present industry is reached preliminary unanimity with regard to the technology of the eating dishes without rice or wine evolution of 3GPP2, mainly is divided into 2 stages to carry out, and the stage one is adopted multicarrier EVDO technology, more consider compatible, the evolution items of short-term just; Second stage is to introduce more advanced technology, such as OFDM (Orthogonal Frequency Division Multiplexing, abbreviation " OFDM ") technology, multiple-input and multiple-output (Multiple-Input Multiple-Output, be called for short " MIMO ") technology or the like, can improve the spectrum efficiency and the peak rate of wireless access system greatly, the evolution plan that above-mentioned two stages are 3GPP2 standard long-term.

Wherein the access network framework in stage two as shown in Figure 1, comprise home agent (Home Agent, abbreviation " HA "), IAD (Access Gateway, abbreviation " AGW "), signaling wireless network controller (Signaling Radio Network Controller, be called for short " SRNC ") and evolution base station (evolved Base Station is called for short " eBS ").

Wherein, AGW is used for safeguarding (Access Termination is called for short " AT ") current data attachment point (Data Attachment Point is called for short " DAP ") information that accesses terminal, when AGW received the forward data that mails to this AT, this AGW can be forwarded to this forward data the DAP of this AT.

Service eBS comprises forward link service sector (Forward Link Serving Sector, be called for short " FLSS ") and reverse link serving sector (Reverse Link Serving Sector, be called for short " RLSS "), FLSS and RLSS may be same eBS, also may be different eBS.

The session status of SRNC maintenance terminal is the centralized control point of session, finishes the function of paging control.Signaling between SRNC and the AT need encapsulate, and goes up and transmits at the radio link protocol (Radio Link Protocol is called for short " RLP ") of service eBS by the tunnel.

DAP is the data attachment point of AT, after DAP receives the data of AT from outside IP network, will by and the tunnel of service between the eBS send to the current service eBS of AT.DAP may be same entity with service eBS.

Other eBS except that service eBS and the signaling message between the AT need encapsulate earlier equally, transmit on the RLP of service eBS by the tunnel between this eBS and the service eBS.

For the reverse data of AT, its service eBS can directly send to outside IP network, perhaps earlier sends to DAP by the tunnel and is transmitted by DAP.

When AT is mobile between different e BS, when AT shifts out the coverage of SRNC, by switching the optimization that realizes signaling paths between SRNC.

The scheme that SRNC switches as shown in Figure 2.

In step 201, target SRNC sends the conversation shift request to source SRNC.

In step 202, source SRNC replys the conversation shift request, and the related session information of AT, current I AP (being DAP) and session signature (session signature) send to target SRNC.

In step 203, target SRNC gives the new unicast access terminal identifier symbol of this AT assignment (Unicast Access Terminal Identifier is called for short " UATI ").

In step 204, target SRNC is sent to AT to new UATI by UATI assignment message UATI Assignment.

For the situation of target SRNC in the Active Set of AT, in step 205, AT sends UATI and finishes idle message UATI Complete to all interior eBS of AT Active Set, notify the UATI of these these AT of eBS to upgrade, eBS in the Active Set sends to target SRNC with UATI Complete message after upgrading UATI.

In step 206, after the UATI that all eBS in target SRNC receives the AT Active Set send finished idle message, target SRNC sent conversation shift and finishes message to source SRNC, and source SRNC starts timer and prepares to discharge old UATI.

For the target SRNC situation in the Active Set of AT not, in step 207, AT sends route and closes Route Close message and close this route (route).

The present inventor finds, above-mentioned flow process is only under the situation in the Active Set that target SRNC is joined AT, just can realize the switching of SRNC, target SRNC is not joined under the situation in the Active Set of AT, AT can send Route Close message and close this route, can't finish the switching of SRNC.Yet, move at ultra broadband in the standard of eating dishes without rice or wine of (Ultra Mobile Broadband is called for short " UMB "), for SRNC,, need to use special-purpose route ID (Route Distinguisher), such as 0 * 1001 as the member in the AT Active Set.Because 0 * 1001 route ID is used by source SRNC, promptly this source SRNC has used the special-purpose route of unique SRNC, AT can not distribute to target SRNC to this route ID again, therefore can't before switching, target SRNC be joined in the AT Active Set, thereby can't finish switching between the SRNC by prior art, that is to say that prior art is an incomplete scheme.

Summary of the invention

The technical problem underlying that embodiment of the present invention will solve provides a kind of method that accesses terminal and switch between signaling wireless network controller, make under the condition with a SRNC special use route only, can realize the handoff functionality between SRNC.

For solving the problems of the technologies described above, embodiments of the present invention provide a kind of method that accesses terminal and switch between signaling wireless network controller, comprise following steps:

Need interior each evolution base station eBS of Active Set of the access terminal AT of switching to revise route mapping relations table, the Access Network sign ANID of the special-purpose route correspondence of the signaling wireless network controller SRNC of this AT is revised as the ANID of target SRNC, and according to amended route mapping relations table with the follow-up signalling route that sends by the special-purpose route of SRNC of this AT to target SRNC.

Embodiments of the present invention also provide a kind of evolution base station, and this eBS belongs to the Active Set of AT, and this eBS comprises:

The first via is revised the unit by the mapping relations table, is used to revise route mapping relations table, the ANID of the special-purpose route correspondence of SRNC of AT is revised as the ANID of target SRNC;

The signaling transmitting element is used for according to amended route mapping relations table the follow-up signalling route that sends by the special-purpose route of SRNC of AT being arrived target SRNC.

Embodiments of the present invention also provide a kind of signaling wireless network controller, comprise:

Switch indicating member, be used for all eBS in the Active Set of AT and send to be used to indicate and carry out the message switched between SRNC, carry the ANID of target SRNC in this message, notice eBS revises route mapping relations table according to this ANID.

UATI assignment unit is used to the AT assignment UATI again that switches to this SRNC;

The one UATI transmitting element is used for by the special-purpose route of the SRNC of amended AT the UATI assignment unit UATI of assignment again being sent to AT.

Embodiments of the present invention also provide a kind of accessing terminal, and comprise:

The 2nd UATI receiving element is used for receiving from the target SRNC of this AT the UATI of assignment again;

The 2nd UATI updating block is used for the UATI of this AT is updated to the UATI of assignment again;

Secondary route mapping relations table is revised the unit, is used for revising route mapping relations table according to the UATI of assignment again, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of target SRNC.

Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:

When the switching of carrying out between SRNC, need interior each eBS of Active Set of the AT of switching to revise route mapping relations table, Access Network sign (Access NetworkIdentify with the special-purpose route correspondence of the SRNC of this AT, be called for short " ANID ") be revised as the ANID of target SRNC, and according to amended route mapping relations table with the follow-up signalling route that sends by the special-purpose route of this SRNC of this AT to target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

Description of drawings

Fig. 1 is the access network configuration diagram in evolution stage two in the prior art;

Fig. 2 is the switching flow figure of SRNC in the prior art;

Fig. 3 is the method flow diagram that the AT according to first embodiment of the invention switches between SRNC;

Fig. 4 is the method flow diagram that the AT according to second embodiment of the invention switches between SRNC;

Fig. 5 is the method flow diagram that the AT according to third embodiment of the invention switches between SRNC;

Fig. 6 is the method flow diagram that the AT according to four embodiment of the invention switches between SRNC;

Fig. 7 is the method flow diagram that the AT according to fifth embodiment of the invention switches between SRNC;

Fig. 8 is the method flow diagram that the AT according to sixth embodiment of the invention switches between SRNC;

Fig. 9 is the method flow diagram that the AT according to seventh embodiment of the invention switches between SRNC;

Figure 10 is the method flow diagram that the AT according to eighth embodiment of the invention switches between SRNC;

Figure 11 is the method flow diagram that the AT according to ninth embodiment of the invention switches between SRNC;

Figure 12 is the method flow diagram that the AT according to tenth embodiment of the invention switches between SRNC;

Figure 13 is the method flow diagram that the AT according to eleventh embodiment of the invention switches between SRNC;

Figure 14 is the method flow diagram that the AT according to twelveth embodiment of the invention switches between SRNC;

Figure 15 is the system construction drawing that the AT according to thirteenth embodiment of the invention switches between SRNC.

Embodiment

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

First embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in activated state, by the switching between service eBS initiation SRNC.Present embodiment mainly is made of following step:

1, by serving eBS to target SRNC initiation session moving anchor point request message, request is carried out switching between SRNC.

2, after target SRNC receives session moving anchor point request message, send the conversation shift request to source SRNC.

3, receive the conversation shift request of target SRNC after, if source SRNC agrees to carry out conversation shift, then SRNC all eBS in this AT Active Set in source send session moving anchor point notice, these eBS upgrade its route mapping relations table, are route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

4, in receiving this AT Active Set, source SRNC after the session moving anchor point notification acknowledgement of all eBS, the session information of this AT is sent to target SRNC.

5, target SRNC gives the new UATI of AT assignment, and sends to AT according to the session information that receives from source SRNC.This message is issued to AT by 0 * 1001route through service eBS.

6, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to all interior eBS of AT Active Set, notifies them to upgrade UATI.And AT revises the UATI of self, and revises route mapping relations table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

7, after all eBS in the Active Set upgrade UATI, send the UATI renewal and finished message to target SRNC, their UATI of notification target SRNC upgrades.

8, when target SRNC received that the UATI renewal of all eBS of Active Set has been finished message, target SRNC sent conversation shift and finishes message to source SRNC; Send the session moving anchor point simultaneously and finish message to service eBS, the SRNC switching is finished.Source SRNC receives from the conversation shift of target SRNC and finishes the UATI that source of release SRNC distributes for this AT after the message.

Idiographic flow as shown in Figure 3, eBS1 is the service eBS of AT, comprises FLSS/RLSS, eBS1 and eBS2 are in the Active Set of AT.

In step 301, service eBS (being eBS1) judges whether to need to initiate to switch between SRNC, the foundation of judging may be: service eBS is Access Network sign (the Access Network Identifier of self relatively, be called for short " ANID ") and the UATI information of AT or the ANID information of source SRNC, if belong to different subnets, or the distance that draws between them according to configuration is distant, then serves eBS and can initiate switching between the SRNC.

In step 302, service eBS judges to be needed to initiate to switch between SRNC, and to target SRNC initiation session moving anchor point request message, request is carried out switching between SRNC, can carry service eBS information in this message, source SRNC information, the UATI of source SRNC assignment.The method of select target SRNC can adopt following mode: according to the tabulation of eBS internal configurations, select suitable SRNC as target SRNC.

In step 303, after target SRNC receives session moving anchor point request message, send the conversation shift request to source SRNC, this message is carried UATI, the ANID of target SRNC etc.

In step 304, after source SRNC received the conversation shift request of target SRNC, if source SRNC agrees to carry out conversation shift, then SRNC all eBS in this AT Active Set in source sent session moving anchor point notice, and carry the ANID of target SRNC in this message.Here suppose to include only eBS1 and eBS2 in the Active Set of this AT, in this step, source SRNC sends this session moving anchor point notice to eBS1 and eBS2.

In step 305, after eBS in the AT Active Set receives session moving anchor point notice, upgrading its inner route mapping table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC, guarantees that the signaling that follow-up AT mails to SRNC can both be routed to target SRNC.EBS in this AT Active Set sends session moving anchor point notification acknowledgement to source SRNC then.

In step 306, after source SRNC receives the session moving anchor point notification acknowledgement of all eBS in this AT Active Set, send the conversation shift response message to target SRNC, the session information of this AT is sent to target SRNC.The session information of AT is sent to target SRNC step also can be carried out together with step 304.

In step 307, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.

In step 308, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 309, after AT receives new UATI assignment message, upgrade the UATI of AT, simultaneously also can revise route mapping relations table according to UATI, promptly upgrading the route MAP mapping relations table of route and ANID, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 310, AT sends UATI and finishes idle message to all interior members of AT Active Set, comprises eBS and target SRNC, and notice eBS upgrades UATI.In the present embodiment, the eBS in the AT Active Set has only eBS1 and eBS2, so AT is only to target SRNC in this step, and eBS1 and eBS2 send this UATI and finish idle message.

In step 311, the eBS (eBS1 and eBS2) in the AT Active Set receives that the UATI from AT finishes after the idle message, and these eBS (eBS1 and eBS2) send UATI and finished message to target SRNC, represent that this eBS finishes the UATI renewal of this AT.

In step 312, after the UATI that all eBS send in target SRNC receives the AT Active Set had finished message, target SRNC sent conversation shift and finishes message to source SRNC.

In step 313, after the conversation shift that source SRNC receives target SRNC is finished message, start timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

In step 314, after the UATI of all eBS transmissions had finished message in target SRNC receives the AT Active Set, target SRNC sent the session moving anchor point and finishes message to service eBS, and expression SRNC switching is finished.Step 312 and step 314 do not have precedence relationship, can executed in parallel, or carry out one by one.

Second embodiment of the invention relates to the method that a kind of AT switches between SRNC, roughly the same with first execution mode, in the present embodiment, initiate the switching of SRNC by service eBS equally, AT is in activated state equally, and eBS1 is the FLSS/RLSS of AT, and eBS2 is in the Active Set of AT.

Present embodiment mainly is made of following step:

6, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to AT Active Set interior all eBS and target SRNC, and notice eBS upgrades UATI.And AT revises the UATI of self, and revises route mapping relations table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

7, after all eBS in the Active Set upgrade UATI, send a message to source SRNC, their UATI of notification source SRNC upgrades; After message was finished in the renewal of all eBS in source SRNC receives the AT Active Set, source SRNC can discharge original UATI.

8, when target SRNC receives that AT transmission UATI finishes idle message, target SRNC sends the session moving anchor point and finishes message to service eBS, and the SRNC switching is finished.

Idiographic flow as shown in Figure 4.

Step 401 is similar to step 310 to step 410 and step 301, does not repeat them here.Step 411 to the step 414 and the main distinction of step 311 to step 314 is, in step 311 to step 314, eBS in the Active Set is after the renewal of finishing UATI, send UATI to target SRNC and finished message, after the UATI of target SRNC all eBS in receiving Active Set has finished message, send conversation shift to source SRNC and finish message, source SRNC can discharge old UATI after receiving that this conversation shift is finished message.In step 411 to step 414, eBS in the Active Set is after the renewal of finishing UATI, send UATI to source SRNC and finished message, target SRNC is after the UATI that receives AT finishes idle message, send conversation shift to source SRNC and finish message, the SRNC UATI that all eBS send in receiving Active Set in source has finished message, and/or after the conversation shift that sends of target SRNC finishes message, can discharge old UATI.

In step 411, eBS (eBS1 and eBS2) in the AT Active Set receives that the UATI from AT finishes after the idle message, these eBS (eBS1 and eBS2) send UATI and have finished message to source SRNC, represent that this eBS finishes the UATI renewal of this AT, source SRNC can begin the UATI that AT is given in source of release SRNC assignment, and source SRNC also can just discharge UATI in step 413.

In step 412, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC.

In step 413, finish after other eBS send in message and the AT Active Set UATI finished message when the conversation shift that source SRNC receives target SRNC, source SRNC starts timer, prepares to discharge by the UATI of source SRNC assignment to this AT.

In step 414, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends the session moving anchor point and finishes message to service eBS, and expression SRNC switches and finishes.Step 412 and step 414 do not have precedence relationship, can executed in parallel, or carry out one by one.

Third embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in activated state, is initiated to switch between SRNC by source SRNC.EBS1 is the service eBS of AT, comprises FLSS/RLSS, and eBS1 and eBS2 are in the Active Set of AT.Idiographic flow as shown in Figure 5.The present embodiment and first execution mode are similar, and its main distinction is in the present embodiment, carries out the judgement of whether switching by source SRNC, and the step of initiating switching.

In step 501, source SRNC judges whether to need to initiate to switch between SRNC, the foundation of judging may be: source SRNC compares ANID of self and the ANID of service eBS (for example when receiving the message of FLSS change), if belong to different subnets, or draw distance distant (or not being preferred SRNC) between them according to configuration, then source SRNC can initiate the switching between the SRNC.

In step 502, SRNC decision in source is initiated to switch between SRNC, selects suitable target SRNC, sends the conversation shift request message to this target SRNC, and the session information of this AT is sent to target SRNC.The method of select target SRNC can be: according to the ANID of service eBS, the configuration relation that is combined in SRNC is selected.

In step 503, target SRNC sends the conversation shift response message to source SRNC, and this conversation shift request is accepted in expression.

In step 504, receive the conversation shift response message of target SRNC as source SRNC after, determine that target SRNC agrees to carry out conversation shift, SRNC all eBS in this AT Active Set in source send session moving anchor point notice, and carry the ANID of target SRNC in this notification message.Here all eBS in the said AT Active Set are eBS1 and eBS2, as shown in Figure 5.

In step 505, after eBS in the AT Active Set receives session moving anchor point notice, upgrading its inner route mapping table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC, guarantees that the signaling that follow-up AT mails to SRNC can both be routed to target SRNC.EBS (eBS1 and eBS2) in this AT Active Set sends session moving anchor point notification acknowledgement to source SRNC then.

In step 506, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.This step can occur in after step 503 or the step 505, if occur in after the step 505, then also needs source SRNC to send a piece of news to target SRNC, shows that source SRNC has notified interior all eBS of AT Active Set will carry out the session moving anchor point.

In step 507, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 508, after AT receives new UATI assignment message, upgrading the UATI of AT, also can upgrade the route MAP mapping relations table of route and ANID simultaneously according to UATI, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 509, AT sends UATI and finishes idle message to interior all eBS (being eBS1 and eBS2) of AT Active Set, notifies them to upgrade UATI.

In step 510, the eBS (being eBS1 and eBS2) in the AT Active Set receives that the UATI from AT finishes after the idle message, upgrades UATI, and sends UATI respectively and finished message to target SRNC, represents that this eBS finishes the UATI renewal of this AT.

In step 511, after the UATI that all eBS in target SRNC receives the AT Active Set (being eBS1 and eBS2) send had finished message, target SRNC sent conversation shift and finishes message to source SRNC.

In step 512, after the conversation shift that source SRNC receives target SRNC is finished message, start timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

Four embodiment of the invention relates to the method that a kind of AT switches between SRNC, roughly the same with the 3rd execution mode, in the present embodiment, initiate the switching of SRNC equally by source SRNC, AT is in activated state equally, and eBS1 is the FLSS/RLSS of AT, and eBS2 is in the Active Set of AT.Specifically as shown in Figure 6.

Step 601 is similar to step 509 to step 609 and step 501, does not repeat them here.Step 610 to the step 612 and the main distinction of step 510 to step 512 is, in step 610 to step 612, eBS in the Active Set is after the renewal of finishing UATI, send UATI to source SRNC and finished message, target SRNC sends conversation shift to source SRNC and finishes message after the UATI that receives AT finishes idle message, and the SRNC UATI that all eBS send in receiving Active Set in source has finished message, and/or after the conversation shift that sends of target SRNC finishes message, can discharge old UATI.

In step 610, eBS (eBS1 and eBS2) in the AT Active Set receives that the UATI from AT finishes after the idle message, these eBS (eBS1 and eBS2) send UATI and have finished message to source SRNC, represent that this eBS finishes the UATI renewal of this AT, source SRNC can begin the UATI that AT is given in source of release SRNC assignment, and source SRNC also can just discharge UNTI in step 612.

In step 611, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC.

In step 612, finish after other eBS send in message and the AT Active Set UATI finished message when the conversation shift that source SRNC receives target SRNC, source SRNC starts timer, prepares to discharge by the UATI of source SRNC assignment to this AT.

Fifth embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in Idle state, is initiated to switch between SRNC by eBS.

Present embodiment mainly is made of following step:

1,, then sends the conversation shift request message to target SRNC if source SRNC need carry out conversation shift; Source SRNC receives the conversation shift response message that target SRNC sends, if target SRNC agrees to carry out conversation shift, then SRNC all eBS in this AT Active Set in source send session moving anchor point notice.These eBS upgrade its route mapping relations table, are route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

2, target SRNC gives the new UATI of AT assignment according to the session information that receives from source SRNC, and sends the UATI assignment message to AT.This message is issued to AT by 0 * 1001route through service eBS.

3, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to all interior eBS of AT Active Set, notifies them to upgrade UATI.

4, after all eBS in the Active Set upgrade UATI, send the UATI renewal and finished message to target SRNC, their UATI of notification target SRNC upgrades.

5, when target SRNC received that the UATI renewal of all eBS of Active Set has been finished message, target SRNC sent conversation shift and finishes message to source SRNC, and the SRNC switching is finished.Source SRNC receives from the conversation shift of target SRNC and finishes the UATI that source of release SRNC distributes for this AT after the message.

The present embodiment and first execution mode are similar, its difference is, in the present embodiment, the point of the metadata cache when if AGW is the AT Idle state, then receive the conversation shift request of target SRNC at source SRNC, and after source SRNC agreed to carry out conversation shift, source SRNC sent session moving anchor point notice to AGW, and carried the ANID of target SRNC in this message.After AGW received session moving anchor point notice, more fresh target SRNC guaranteed that as the new paging control point of this AT the paging of follow-up this AT can both be mail to target SRNC.Specifically as shown in Figure 7.

In step 701, AT is in Idle state, and AT registers to source SRNC by eBS 1.

In step 702, eBS1 judges whether to need to initiate to switch between SRNC, the foundation of judging may be: eBS1 is than self ANID and the UATI information of AT or the ANID information (for example after receiving the registration message of AT) of source SRNC, if belong to different subnets, or draw distance distant (or not being preferred SRNC) between them according to configuration, then eBS1 initiates the switching between the SRNC.

In step 703, eBS1 judges to be needed to initiate to switch between SRNC, and to target SRNC initiation session moving anchor point request message, request is carried out switching between SRNC, can carry eBS1 information in this message, source SRNC information, the UATI of source SRNC assignment.The method of select target SRNC can adopt following mode: according to the tabulation of eBS internal configurations, select suitable SRNC as target SRNC.

In step 704, after target SRNC receives session moving anchor point request message, send the conversation shift request to source SRNC, this message is carried UATI, the ANID of target SRNC etc.

In step 705, after source SRNC receives the conversation shift request of target SRNC, if source SRNC agrees to carry out conversation shift, then SRNC all eBS in this AT Active Set in source send session moving anchor point notice, and carry the ANID of target SRNC in this notification message.In the present embodiment, the eBS in the Active Set of AT has only eBS1, and therefore, in this step, source SRNC only sends session moving anchor point notice to eBS1.

In step 706, after eBS (being eBS1) in the AT Active Set receives session moving anchor point notice, upgrade its inner route mapping table, be route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC, guarantee that the signaling that follow-up AT mails to SRNC can both be routed to target SRNC.EBS in this AT Active Set sends session moving anchor point notification acknowledgement to source SRNC then.

In step 707, the point of the metadata cache when if the functional entity of AGW is the AT Idle state, then receive the conversation shift request of target SRNC at source SRNC, and after source SRNC agrees to carry out conversation shift, source SRNC sends session moving anchor point notice to AGW, and carries the ANID of target SRNC in this message.

In step 708, after AGW received session moving anchor point notice, more fresh target SRNC guaranteed that as the new paging control point of this AT the paging of follow-up this AT can both be mail to target SRNC.This AGW sends session moving anchor point notification acknowledgement to source SRNC then.

In step 709, after source SRNC receives the session moving anchor point notification acknowledgement of all eBS (having only eBS1 in the present embodiment) in this AT Active Set, send the conversation shift response message to target SRNC, the session information of this AT is sent to target SRNC.If the point of the metadata cache the when functional entity of AGW is the AT Idle state then also needs to receive the session moving anchor point notification acknowledgement of AGW afterwards, the session information of this AT to be sent to target SRNC.The step that the session information of this AT is sent to target SRNC also can be carried out together with step 705 and/or step 707.

In step 710, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.

In step 711, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 712, after AT receives new UATI assignment message, upgrading the UATI of AT, also can upgrade the route MAP mapping relations table of route and ANID simultaneously according to UATI, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 713, AT sends UATI and finishes idle message to all interior members of AT Active Set, comprises target SRNC and eBS, notifies them to upgrade UATI.Only send this UATI in the present embodiment and finish idle message to target SRNC and eBS1.

In step 714, the eBS in the AT Active Set receives that the UATI from AT finishes after the idle message, upgrades UATI, and sends UATI and finished message to target SRNC, represents that this eBS finishes the UATI renewal of this AT.Have only eBS1 to send this UATI equally, in the present embodiment and finished message to target SRNC.

In step 715, after the UATI that all eBS in target SRNC receives the AT Active Set (having only eBS1 in the present embodiment) send had finished message, target SRNC sent conversation shift and finishes message to source SRNC.During this time, target SRNC also can send a message to AGW, and notice AGW SRNC switching is finished.

In step 716, after the conversation shift that source SRNC receives target SRNC is finished message, start timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

In step 717, after the UATI that all eBS in target SRNC receives the AT Active Set (having only eBS1 in the present embodiment) send had finished message, target SRNC sent the session moving anchor point and finishes message to service eBS (being eBS1), and the SRNC switching is finished.Step 717 and step 715 do not have precedence relationship, can executed in parallel, or carry out one by one.

Sixth embodiment of the invention relates to the method that a kind of AT switches between SRNC, roughly the same with the 5th execution mode, in the present embodiment, initiates the switching of SRNC by service eBS equally, and AT is in Idle state equally, and eBS1 is the FLSS/RLSS of AT.

Present embodiment mainly is made of following step:

3, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to AT Active Set interior all eBS and target SRNC, and notice eBS upgrades UATI.

4, after all eBS in the Active Set upgrade UATI, send a message to source SRNC, their UATI of notification source SRNC upgrades; After message was finished in the renewal of all eBS in source SRNC receives the AT Active Set, source SRNC can discharge the UATI of original assignment.

5, when target SRNC receives that UATI finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC, and the SRNC switching is finished.

The difference of present embodiment and the 5th execution mode is, eBS in the Active Set is after the renewal of finishing UATI, send UATI to source SRNC and finished message, target SRNC is after the UATI that receives AT finishes idle message, send conversation shift to source SRNC and finish message, the SRNC UATI that all eBS send in receiving Active Set in source has finished message, and/or after the conversation shift that sends of target SRNC finishes message, can discharge old UATI.Idiographic flow as shown in Figure 8.

Step 801 is similar to step 713 to step 813 and step 701, does not repeat them here.

In step 814, eBS (having only eBS1 in the present embodiment) in the AT Active Set receives that the UATI from AT finishes after the idle message, these eBS (having only eBS1) send UATI and have finished message to source SRNC, represent that this eBS finishes the UATI renewal of this AT, source SRNC can begin the UATI that AT is given in source of release SRNC assignment, and source SRNC also can just discharge UNTI in step 816.

In step 815, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC.During this time, target SRNC also can send a message to AGW, and notice AGW SRNC switching is finished.

In step 816, when the conversation shift that source SRNC receives target SRNC is finished after UATI that other eBS in message and the AT Active Set (having only eBS1 in the present embodiment) send finished message, source SRNC starts timer, prepares to discharge the UATI that is given this AT by source SRNC assignment.

In step 817, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends the session moving anchor point and finishes message to service eBS (being eBS1), and expression SRNC switching is finished.Step 817 and step 815 do not have precedence relationship, can executed in parallel, or carry out one by one.

Seventh embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in Idle state, is initiated to switch between SRNC by source SRNC.Specifically as shown in Figure 9.Present embodiment and the 5th execution mode are similar, and its main distinction is in the present embodiment, carries out the judgement of whether switching by source SRNC, and the step of initiating switching.

In step 901, AT is in Idle state, and AT registers to source SRNC by eBS1.

In step 902, source SRNC judges whether to need to initiate to switch between SRNC, the foundation of judging may be: source SRNC compares ANID (or UATI) of self and the ANID information (after for example receiving the registration message of AT) of eBS1, if belong to different subnets, or draw distance distant (or not being preferred SRNC) between them according to configuration, then source SRNC can initiate the switching between the SRNC.

In step 903, SRNC decision in source is initiated to switch between SRNC, selects suitable target SRNC, and sends the conversation shift request message to this target SRNC, and the session information of this AT is sent to target SRNC.The method of select target SRNC can be: according to the ANID of eBS1, the configuration relation that is combined in SRNC is selected.

In step 904, target SRNC sends the conversation shift response message to source SRNC, represents to accept session migration request.

In step 905, receive the conversation shift response message of target SRNC as source SRNC after, determine that target SRNC agrees to carry out conversation shift, SRNC all eBS (having only eBS1 in the present embodiment) in this AT Active Set in source send session moving anchor point notice, and carry the ANID of target SRNC in this message.

In step 906, after eBS in the AT Active Set receives session moving anchor point notice, upgrading its inner route mapping table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC, guarantees that the signaling that follow-up AT mails to SRNC can both be routed to target SRNC.EBS in this AT Active Set sends session moving anchor point notification acknowledgement to source SRNC then.

In step 907, the point of the metadata cache when if the functional entity of AGW is the AT Idle state, then receive the conversation shift request of target SRNC at source SRNC, and after source SRNC agrees to carry out conversation shift, source SRNC sends session moving anchor point notice to AGW, and carries the ANID of target SRNC in this message.

In step 908, after AGW received session moving anchor point notice, more fresh target SRNC guaranteed that as the new paging control point of this AT the paging of follow-up this AT can both be mail to target SRNC.This AGW sends session moving anchor point notification acknowledgement to source SRNC then.

In step 909, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.This step can occur in after step 904 or step 906 and 908, if occur in after step 906 and 908, then also need source SRNC to send a piece of news, show that source SRNC has notified interior all eBS of AT Active Set and AGW will carry out the session moving anchor point to target SRNC.

In step 910, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 911, after AT receives new UATI assignment message, upgrading the UATI of AT, also can upgrade the route MAP mapping relations table of route and ANID simultaneously according to UATI, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 912, AT sends UATI and finishes idle message to all interior members of AT Active Set, comprises target SRNC and eBS, notifies them to upgrade UATI.Only send this UATI in the present embodiment and finish idle message to target SRNC and eBS1.

In step 913, the eBS in the AT Active Set receives that the UATI from AT finishes after the idle message, upgrades UATI, and sends UATI respectively and finished message to target SRNC, represents that these eBS finish the UATI renewal of this AT.Have only eBS1 to send this UATI in the present embodiment and finished message to target SRNC.

In step 914, after the UATI that all eBS send in target SRNC receives the AT Active Set had finished message, target SRNC sent conversation shift and finishes message to source SRNC.During this time, target SRNC also can send a message to AGW, switches between notice AGW SRNC and finishes.

In step 915, after the conversation shift that source SRNC receives target SRNC is finished message, start timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

Eighth embodiment of the invention relates to the method that a kind of AT switches between SRNC, roughly the same with the 7th execution mode, and in the present embodiment, by the switching between source SRNC initiation SRNC, AT is in Idle state equally equally, and eBS1 is the FLSS/RLSS of AT.Its difference is, in the present embodiment, eBS in the Active Set is after the renewal of finishing UATI, send UATI to source SRNC and finished message, target SRNC sends conversation shift to source SRNC and finishes message after the UATI that receives AT finishes idle message, and the SRNC UATI that all eBS send in receiving Active Set in source has finished message, and/or after the conversation shift that sends of target SRNC finishes message, all can discharge old UATI.Idiographic flow as shown in figure 10.

Step 1001 is similar to step 912 to step 1012 and step 901, does not repeat them here.

In step 1013, eBS (having only eBS1 in the present embodiment) in the AT Active Set receives that the UATI from AT finishes after the idle message, these eBS (having only eBS1) send UATI and have finished message to source SRNC, represent that this eBS finishes the UATI renewal of this AT, source SRNC can begin the UATI that AT is given in source of release SRNC assignment, and source SRNC also can just discharge UNTI in step 1015.

In step 1014, when target SRNC receives after UATI from AT finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC.During this time, target SRNC also can send a message to AGW, and notice AGW SRNC switching is finished.

In step 1015, when the conversation shift that source SRNC receives target SRNC is finished after UATI that other eBS in message and the AT Active Set (having only eBS1 in the present embodiment) send finished message, source SRNC starts timer, prepares to discharge the UATI that is given this AT by source SRNC assignment.

Ninth embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in activated state, by the switching between service eBS initiation SRNC.EBS1 is the service eBS of AT, comprises FLSS/RLSS, and eBS1 and eBS2 are in the Active Set of AT.

Present embodiment mainly is made of following step:

6, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to target SRNC, and expression AT has received the UATI assignment message.And AT revises the UATI of self, and revises route mapping relations table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

7, after target SRNC receives that the UATI of AT transmission finishes idle message, target SRNC sends the session moving anchor point and finishes message to service eBS, and expression SRNC switching is finished.

8, after target SRNC received that the UATI of AT transmission finishes idle message, target SRNC sent conversation shift and finishes message to source SRNC, and expression SRNC switching is finished, and source SRNC can start the UATI of timer release by source SRNC distribution.

9, after target SRNC received that the UATI of AT transmission finishes idle message, target SRNC sent UATI and updates message to all interior eBS of this AT set of routes, upgraded the UATI of this AT.

The present embodiment and first execution mode are similar, its difference is, in the present embodiment, AT is after upgrading UATI, do not send UATI and finish idle message, finish idle message, after target SRNC receives that this UATI finishes idle message and only send this UATI to target SRNC to the eBS in the Active Set, directly notification source SRNC discharges old UATI, and all eBS upgrade UATI in the notice Active Set.Idiographic flow as shown in figure 11.

Step 1101 is similar to step 309 to step 1109 and step 301, does not repeat them here.

In step 1110, AT sends UATI and finishes idle message to target SRNC, and this AT of notification target SRNC has received the UATI assignment message.

In step 1111, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends conversation shift and finishes message to source SRNC.

In step 1112, after the conversation shift that source SRNC receives target SRNC is finished message, start timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

In step 1113, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends the session moving anchor point and finishes message to service eBS, and expression SRNC switches and finishes.This step and step 1111 do not have precedence relationship, can executed in parallel.

In step 1114, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends UATI and updates message to all eBS in the AT Active Set, indicates these eBS to upgrade UATI.This step and step 1111, step 1113 executed in parallel.Here all eBS refer to eBS1 and eBS2 in the AT Active Set.

In step 1115, after eBS1 and eBS2 receive the UATI updating message of target SRNC, upgrade the UATI of this AT, and send UATI and upgrade response message to target SRNC.

Tenth embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in activated state, is initiated to switch between SRNC by source SRNC.EBS1 is the service eBS of AT, comprises FLSS/RLSS, and eBS1 and eBS2 are in the Active Set of AT.

Present embodiment mainly is made of following step:

1,, then sends the conversation shift request message to target SRNC if source SRNC need carry out conversation shift; If source SRNC receives the conversation shift response message that target SRNC sends, this message represents that target SRNC agrees to carry out conversation shift, and then SRNC all eBS in this AT Active Set in source send session moving anchor point notice; These eBS upgrade its route mapping relations table, are route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

2, after all eBS session moving anchor point notices were replied in source SRNC receives the AT Active Set, source SRNC sent conversation shift and finishes message to target SRNC.

3, receive after session patent that source SRNC sends finishes message as target SRNC, target SRNC gives the new UATI of AT assignment according to the session information that receives from source SRNC, and sends the UATI assignment message to AT.This message is issued to AT by 0 * 1001route through service eBS.

4, after AT receives new UATI assignment message, AT sends UATI and finishes idle message to target SRNC, and expression AT has received the UATI assignment message.And AT revises the UATI of self, and revises route mapping relations table, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

5, after target SRNC receives that the UATI of AT transmission finishes idle message, target SRNC sends session and discharges Indication message to source SRNC, and expression SRNC switching is finished, and source SRNC can start timer and discharge the UATI that is distributed by source SRNC.

6, after target SRNC received that the UATI of AT transmission finishes idle message, target SRNC sent UATI and updates message to all interior eBS of this AT set of routes, upgraded the UATI of this AT.

Present embodiment and the 3rd execution mode are similar, its difference is, in the present embodiment, AT is after upgrading UATI, do not send UATI and finish idle message, finish idle message, after target SRNC receives that this UATI finishes idle message and only send this UATI to target SRNC to the eBS in the Active Set, directly notification source SRNC discharges old UATI, and all eBS upgrade UATI in the notice Active Set.Idiographic flow as shown in figure 12.

Step 1201 is similar to step 505 to step 1205 and step 501, does not repeat them here.

In step 1206, after the session moving anchor point notification acknowledgement that the eBS in source SRNC receives the AT Active Set (comprising eBS1 and eBS2) sends, send conversation shift and finish message to target SRNC.

In step 1207, when target SRNC receives after conversation shift that source SRNC sends finishes message, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.

In step 1208, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 1209, after AT receives new UATI assignment message, upgrading the UATI of AT, also can upgrade the route MAP mapping relations table of route and ANID simultaneously according to UATI, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 1210, AT sends UATI and finishes idle message to target SRNC, and this AT of notification target SRNC has received the UATI assignment message.

In step 1211, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends session and discharges Indication message to source SRNC.

In step 1212, after session that source SRNC receives target SRNC discharges Indication message, send session and discharge the indication response message, and start timer to target SRNC, prepare to discharge by the UATI of source SRNC assignment to this AT.

In step 1213, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends UATI and updates message to all eBS in the AT Active Set, indicates these eBS to upgrade UATI.All eBS are meant eBS1 and eBS2 in the AT Active Set in the present embodiment.This step and step 1211 do not have precedence relationship, but executed in parallel.

In step 1214, after eBS1 and eBS2 receive the UATI updating message of target SRNC, upgrade the UATI of this AT, and send UATI and upgrade response message to target SRNC.

Eleventh embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in Idle state, is initiated to switch between SRNC by eBS.Present embodiment and the 5th execution mode are similar, its difference is, in the present embodiment, AT is after upgrading UATI, do not send UATI and finish idle message, finish idle message, after target SRNC receives that this UATI finishes idle message and only send this UATI to target SRNC to the eBS in the Active Set, directly notification source SRNC discharges old UATI, and all eBS upgrade UATI in the notice Active Set.Idiographic flow as shown in figure 13.

Step 1301 is similar to step 712 to step 1312 and step 701, does not repeat them here.

In step 1313, AT sends UATI and finishes idle message to target SRNC, and notice mark SRNC AT has received the UATI assignment message.

In step 1314, when target SRNC receive receive that UATI finishes idle message after, target SRNC sends conversation shift and finishes message to source SRNC.

In step 1315, after the conversation shift that source SRNC receives target SRNC was finished message, source SRNC started timer, prepared to discharge the UATI that is given this AT by source SRNC assignment.

In step 1316, when target SRNC receive receive that UATI finishes idle message after, target SRNC sends the session moving anchor point and finishes message to service eBS, SRNC switches and finishes.This step and step 1314 do not have precedence relationship, but executed in parallel.

In step 1317, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends UATI and updates message to all eBS (having only eBS1 in the present embodiment) in the AT Active Set, and notice eBS upgrades UATI.But this step and step 1314, step 1316 executed in parallel.

In step 1318, receive the UATI updating message of target SRNC as eBS1 after, upgrade the UATI of this AT, and send UATI and upgrade response message to target SRNC.

In step 1319, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends the session moving anchor point and finishes message to AGW, and notice AGW finishes the switching of SRNC.This step and step 1314, step 1316, step 1317 do not have precedence relationship, but executed in parallel, or carry out according to random order.This step is only used in the scene that AGW initiates as idle state paging.

In step 1320, after the session moving anchor point that AGW receives target SRNC is finished message, send the session moving anchor point and finish response message to target SRNC.

Twelveth embodiment of the invention relates to the method that a kind of AT switches between SRNC, in the present embodiment, this AT is in Idle state, is initiated to switch between SRNC by source SRNC.Present embodiment and the 7th execution mode are similar, its difference is, in the present embodiment, AT is after upgrading UATI, do not send UATI and finish idle message, finish idle message, after target SRNC receives that this UATI finishes idle message and only send this UATI to target SRNC to the eBS in the Active Set, directly notification source SRNC discharges old UATI, and all eBS upgrade UATI in the notice Active Set.Idiographic flow as shown in figure 14.

Step 1401 to step 1408 and step 901 to 908 similar, do not repeat them here.

In step 1409, after source SRNC received the session moving anchor point notification acknowledgement of all eBS in this AT Active Set, the transmission conversation shift was finished message and is returned target SRNC.This step also can with step 1405 executed in parallel.

In step 1410, target SRNC is the new UATI of AT assignment according to the session information that receives from source SRNC.

In step 1411, target SRNC sends to AT to the UATI of new assignment by the UATI assignment message.This message sends by the route (0 * 1001) of SRNC.

In step 1412, after AT receives new UATI assignment message, upgrading the UATI of AT, also can upgrade the route MAP mapping relations table of route and ANID simultaneously according to UATI, is route ID the ANID that the ANID of 0 * 1001 route correspondence is updated to target SRNC.

In step 1413, AT sends UATI and finishes idle message to target SRNC, and this AT of notification target SRNC has received the UATI assignment message.

In step 1414, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends session and discharges Indication message to source SRNC.

In step 1415, receive the session release Indication message of target SRNC as source SRNC after, source SRNC sends session and discharges the indication response message to target SRNC, and indication SRNC switching is finished, and the startup timer, prepare to discharge the UATI that gives this AT by source SRNC assignment.

In step 1416, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends UATI and updates message to all eBS in the AT Active Set, and indication eBS (having only eBS1 in the present embodiment) upgrades UATI.This step and step 1414 do not have precedence relationship, but executed in parallel.

In step 1417, receive the UATI updating message of target SRNC as eBS1 after, upgrade the UATI of this AT, and send UATI and upgrade response message to target SRNC.

In step 1418, when target SRNC receives after UATI that AT sends finishes idle message, target SRNC sends the session moving anchor point and finishes message to AGW.This step and step 1414 and step 1416 do not have precedence relationship, but executed in parallel.Need to prove that this step is only used in the scene that AGW initiates as idle state paging.

In step 1419, after the session moving anchor point that AGW receives target SRNC is finished message, send the session moving anchor point and finish response message to target SRNC.

Thirteenth embodiment of the invention relates to the system that a kind of AT switches between SRNC, as shown in figure 15, comprise AT, eBS, source SRNC and target SRNC in this AT Active Set.

Wherein, each eBS comprises: the first via is revised the unit by the mapping relations table, is used to revise route mapping relations table, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of target SRNC; The signaling transmitting element is used for according to amended route mapping relations table the follow-up signalling route that sends by the special-purpose route of this SRNC of this AT being arrived this target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

Each eBS can also comprise: switch the indication receiving element, be used for receiving to be used to indicate carrying out the message switched between SRNC, and the indication first via is revised the unit by the mapping relations table and is revised route mapping relations table according to the ANID of the target SRNC that carries in this message from source SRNC; Indicating member is finished in first modification, is used for after this route mapping relations table modification is finished, and returns to this source SRNC to be used to indicate this eBS to finish the message of the modification of this route mapping relations table.

Each eBS can also comprise: a UATI receiving element is used to receive the UATI of the assignment again that this AT or target SRNC send; The one UATI updating block is used for the UATI of this AT is updated to this UATI of assignment again.

Each eBS can also comprise: first upgrades and to finish indicating member, is used for being updated to this again behind the UATI of assignment at the UATI of this AT, sends the message that is used to indicate the renewal of finishing this UATI to this source SRNC and/or this target SRNC.

This eBS can also comprise: first switches the initiation unit, is used for sending the request of session moving anchor point to this target SRNC, and request switches to this target SRNC with the AT of current service.

This source SRNC comprises: switch indicating member, be used for all eBS in the Active Set of AT and send to be used to indicate and carry out the message switched between SRNC, carry the ANID of this target SRNC in this message, notify this eBS to revise this route mapping relations table according to this ANID.

This source SRNC can also comprise: the session information transmitting element is used for the session information of this AT is sent to target SRNC.This session information transmitting element with the opportunity that the session information of this AT sends to this target SRNC is:

After the message of the modification that all eBS send in this SRNC receives this Active Set is used to indicate this eBS to finish this route mapping relations table; Perhaps, after this SRNC receives the conversation shift request of this target SRNC transmission; Perhaps, during to conversation shift request that this target SRNC sends, in this conversation shift request, carry the session information of this AT at this SRNC.

This source SRNC can also comprise: the UATI releasing unit is used for the UATI of source of release SRNC for this AT assignment.This UATI releasing unit discharges this SRNC for opportunity of the UATI of this AT assignment being:

This UATI releasing unit receive be used to indicate from this of this target SRNC finish the message of switching between this SRNC after, discharge the UATI of this source SRNC for this AT assignment; Perhaps, this UATI releasing unit message that is used to indicate the renewal of finishing this UATI that all eBS send in receiving this Active Set, and receive from this of this target SRNC be used to indicate finish the message of switching between this SRNC after, discharge the UATI of this source SRNC for this AT assignment.

This source SRNC can also comprise: second switches the initiation unit, is used for sending the request of session moving anchor point to this target SRNC, and request switches to this target SRNC with this AT.

This target SRNC comprises: UATI assignment unit is used to the AT assignment UATI again that switches to this SRNC; The one UATI transmitting element is used for by the special-purpose route of amended this SRNC this UATI assignment unit UATI of assignment again being sent to this AT.

This target SRNC can also comprise: the session information receiving element is used for receiving from the source SRNC of this AT the session information of this AT; This UATI assignment unit is this AT assignment UATI again according to this session information of receiving.

This target SRNC can also comprise: upgrade and finish receiving element, be used to receive the message that is used to indicate the renewal of finishing UATI that this AT sends; The 2nd UATI transmitting element is used for after receiving the message that is used to indicate the renewal of finishing UATI that this AT sends, and all eBS send this UATI of assignment again in this Active Set, indicate these eBS that the UATI of this AT is updated to this UATI of assignment again.

This target SRNC can also comprise: switch and to finish indicating member, be used for all eBS send in receiving this Active Set the message that is used to indicate the renewal of finishing this UATI after, send to be used to indicate to this source SRNC and finish the message of switching between this SRNC; Perhaps, this switching is finished indicating member and is used for after the message of receiving from this AT that is used to indicate the renewal of finishing UATI, sends to be used to indicate to this source SRNC and finishes the message of switching between this SRNC.

This AT comprises: the 2nd UATI receiving element is used for receiving from the target SRNC that this AT switches to the UATI of assignment again; The 2nd UATI updating block is used for the UATI of this AT is updated to this UATI of assignment again; Secondary route mapping relations table is revised the unit, be used for according to this again the UATI of assignment revise route mapping relations table, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of target SRNC.Thereby when service did not have the information of the special-purpose route of SRNC of this AT among the eBS, for example AT was in Idle state and switches to this service eBS, and AT can determine which SRNC is signaling should issue according to ANID, and after guaranteeing to switch SRNC, AT can correctly send signaling.

This AT can also comprise: the 3rd UATI transmitting element is used for receiving this again behind the UATI of assignment that all eBS send this UATI of assignment again in the Active Set of this AT, indicate these eBS that the UATI of this AT is updated to this UATI of assignment again.

This AT can also comprise: indicating member is finished in second renewal, be used for the UATI of this AT being updated to this UATI of assignment again at the 2nd UATI updating block, and after this modification is finished in this secondary route mapping relations table modification unit, send the message that is used to indicate the renewal of finishing UATI to this target SRNC.

In sum, in embodiments of the present invention, when the switching of carrying out between SRNC, need interior each eBS of Active Set of the AT of switching to revise route mapping relations table, Access Network sign (Access Network Identify with the special-purpose route correspondence of the SRNC of this AT, be called for short " ANID ") be revised as the ANID of target SRNC, and according to amended route mapping relations table with the follow-up signalling route that sends by the special-purpose route of this SRNC of this AT to target SRNC.Thereby before switching is finished, promptly before source SRNC does not leave the Active Set of this AT, need not special-purpose route for SRNC of this target SRNC assignment again, the Active Set that also this target SRNC can be added this AT, make under condition only, can realize the handoff functionality between SRNC with a SRNC special use route.

Can initiate to switch between SRNC by service eBS or the source SRNC of AT.Because service eBS and source SRNC can in time distinguish the distance of current region of AT and SRNC region, source, judge whether current source SRNC is optimum SRNC, therefore best by the real-time and the flexibility of service eBS or source SRNC initiation switching flow, feasibility is higher.

By target SRNC is AT assignment UATI again, and sends to AT by the special-purpose route of the amended SRNC UATI of assignment again; AT is updated to the UATI of assignment again with its UATI, and revises route mapping relations table according to the UATI of this new assignment, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of target SRNC.Thereby not during the information of the special-purpose route of SRNC of this AT, for example AT is in Idle state and switches to this service eBS in service eBS, and AT can determine which SRNC is signaling should issue according to ANID, and after guaranteeing to switch SRNC, AT can correctly send signaling.

AT is after revising route mapping relations table, and all eBS send the UATI of assignment again in Active Set, indicate these eBS that the UATI of AT is updated to this UATI of assignment again; Perhaps, AT is after revising route mapping relations table, send the message that the renewal of UATI is finished in indication to target SRNC, this target SRNC is after the message of receiving from the renewal of finishing UATI of this AT, all eBS send the UATI of assignment again in Active Set, indicate these eBS that the UATI of AT is updated to this UATI of assignment again.UATI after a kind of mode in back is directly upgraded by target SRNC transmission, less to the burden of AT.

The method that source SRNC discharges the UATI of its assignment has several, and the UATI that can all eBS in target SRNC receives the AT Active Set sends has finished message, and sends conversation shift and finish message behind the SRNC of source, and source SRNC begins to discharge UATI; Perhaps, the UATI that all eBS in source SRNC receives the AT Active Set send has finished message, and after the conversation shift that sends of target SRNC finished message, source SRNC can begin to discharge UATI; Perhaps, receive after UATI finished message, send message informing source SRNC and can begin to discharge UATI at target SRNC.In three kinds of methods, the signaling of the third method exchange is minimum, implements comparatively simply, and feasibility is best.

Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims

1. a method that accesses terminal and switch between signaling wireless network controller is characterized in that, comprises following steps:

Need interior each evolution base station eBS of Active Set of the access terminal AT of switching to revise route mapping relations table, the Access Network sign ANID of the special-purpose route correspondence of the signaling wireless network controller SRNC of this AT is revised as the ANID of target SRNC, and the follow-up signalling route that sends by the special-purpose route of described SRNC of this AT is arrived described target SRNC according to amended route mapping relations table.

2. the method that accesses terminal and switch between signaling wireless network controller according to claim 1 is characterized in that, before described each eBS revises the step of route mapping relations table, also comprises following steps:

Initiate to switch between described SRNC to described target SRNC;

Described source SRNC is when determining that described target SRNC agrees to carry out switching between described SRNC, all eBS in described AT Active Set send to be used to indicate and carry out the message switched between described SRNC, in this message, carry the ANID of described target SRNC, notify described eBS to revise described route mapping relations table according to this ANID.

3. the method that accesses terminal and switch between signaling wireless network controller according to claim 2 is characterized in that, it is as follows to initiate the mode switched between described SRNC to described target SRNC:

The service eBS of described AT sends the request of session moving anchor point to described target SRNC, and request is carried out switching between described SRNC; Perhaps

Described source SRNC sends the conversation shift request to described target SRNC, and request is carried out switching between described SRNC.

4. the method that accesses terminal and switch between signaling wireless network controller according to claim 3 is characterized in that, it is as follows that described source SRNC determines that described target SRNC agrees to carry out the mode switched between described SRNC:

If described source SRNC receives the conversation shift request that sends from described target SRNC, then described source SRNC determines that described target SRNC agrees to carry out switching between described SRNC; Perhaps

After described target SRNC sent the conversation shift request, described target SRNC returned the conversation shift response to described source SRNC at described source SRNC, and described source SRNC determines according to this conversation shift response whether described target SRNC agrees to carry out switching between described SRNC.

5. the method that accesses terminal and switch between signaling wireless network controller according to claim 2 is characterized in that, after described each eBS revises the step of route mapping relations table, also comprises following steps:

Described each eBS returns to described source SRNC and is used to indicate this eBS to finish the message of the modification of described route mapping relations table.

6. the method that accesses terminal and switch between signaling wireless network controller according to claim 2 is characterized in that, also comprises following steps:

Described source SRNC sends to described target SRNC with the session information of described AT;

Described target SRNC is described AT assignment unicast access terminal identifier symbol UATI again according to described session information.

7. the method that accesses terminal and switch between signaling wireless network controller according to claim 6 is characterized in that, described source SRNC with the opportunity that the session information of described AT sends to described target SRNC is:

After the message of the modification of indicating this eBS to finish described route mapping relations table in described source SRNC being used to of receiving in the described Active Set that all eBS send; Perhaps

Receive the conversation shift request of described target SRNC transmission at described source SRNC after; Perhaps

During to conversation shift request that described target SRNC sends, in this conversation shift request, carry the session information of described AT at described source SRNC.

8. the method that accesses terminal and switch between signaling wireless network controller according to claim 6 is characterized in that, described target SRNC is described AT again behind the assignment UATI, also comprises following steps:

Described target SRNC sends to described AT by the special-purpose route of amended described SRNC with the UATI of described assignment again;

Described AT is updated to the UATI of described assignment again with its UATI, and according to this again the UATI of assignment revise route mapping relations table, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of target SRNC.

9. the method that accesses terminal and switch between signaling wireless network controller according to claim 8 is characterized in that, upgrades UATI at described AT, and revises after the step of route mapping relations table, also comprises following steps:

Described source SRNC discharges it and is the UATI of described AT assignment.

10. the method that accesses terminal and switch between signaling wireless network controller according to claim 9 is characterized in that, is described AT again after the step of assignment UATI at described target SRNC, also comprises following steps:

All eBS send the UATI of described assignment again in described Active Set, indicate these eBS that the UATI of described AT is updated to this UATI of assignment again.

11. the method that accesses terminal and switch between signaling wireless network controller according to claim 10 is characterized in that, the mode of the UATI of the described assignment again of all eBS transmissions is in described Active Set:

Described AT is after revising route mapping relations table, and all eBS send the UATI of described assignment again in described Active Set, indicate these eBS that the UATI of described AT is updated to this UATI of assignment again; Perhaps

Described AT is after revising route mapping relations table, send the message that is used to indicate the renewal of finishing UATI to described target SRNC, this target SRNC is after this message of receiving from this AT, all eBS send the UATI of described assignment again in described Active Set, indicate these eBS that the UATI of described AT is updated to this UATI of assignment again.

12. the method that accesses terminal and switch between signaling wireless network controller according to claim 11 is characterized in that, after the step of described AT UATI of the described assignment again of all eBS transmissions in described Active Set, also comprises following steps:

Each eBS sends the message that is used to indicate the renewal of finishing described UATI to described source SRNC and/or described target SRNC in the described Active Set;

After the described target SRNC message that is used to indicate the renewal of finishing described UATI that all eBS send in receiving described Active Set, send to be used to indicate to described source SRNC and finish the message of switching between described SRNC.

13. the method that accesses terminal and switch between signaling wireless network controller according to claim 11 is characterized in that, after described target SRNC receives the message that is used to indicate the renewal of finishing UATI from described AT, also comprises following steps:

Described target SRNC sends to be used to indicate to described source SRNC and finishes the message of switching between described SRNC.

14., it is characterized in that described source SRNC discharges its opportunity for the UATI of described AT assignment and is according to claim 12 or the 13 described methods that access terminal and between signaling wireless network controller, switch:

Described source SRNC receive be used to indicate from described target SRNC described finish the message of switching between described SRNC after, discharging this source SRNC is the UATI of described AT assignment; Perhaps

The described source SRNC message that is used to indicate the renewal of finishing described UATI that all eBS send in receiving described Active Set, and receive finish the message of switching between described SRNC from the described indication of described target SRNC after, discharging this source SRNC is the UATI of described AT assignment.

15. the method that accesses terminal and switch between signaling wireless network controller according to claim 2 is characterized in that, after described source SRNC determines that described target SRNC agrees to carry out to switch between described SRNC, also comprises following steps:

If described AT is in Idle state, and the metadata cache point of the IAD under this AT when being this AT Idle state, then source SRNC sends to be used to indicate to this IAD and carries out the message switched between SRNC, and carries the ANID of target SRNC in this message;

Described IAD receive described be used to indicate the message of carrying out switching between SRNC after, with the target SRNC of described ANID sign new paging control point as described AT.

16. an evolution base station, this eBS belongs to the Active Set of AT, it is characterized in that, this eBS comprises:

The first via is revised the unit by the mapping relations table, is used to revise route mapping relations table, the ANID of the special-purpose route correspondence of SRNC of described AT is revised as the ANID of target SRNC;

The signaling transmitting element is used for according to amended route mapping relations table the follow-up signalling route that sends by the special-purpose route of described SRNC of described AT being arrived described target SRNC.

17. evolution base station according to claim 16 is characterized in that, also comprises:

Switch the indication receiving element, be used for receiving to be used to indicate carrying out the message switched between SRNC, and indicate the described first via to revise the unit and revise route mapping relations table according to the ANID of the target SRNC that carries in this message by the mapping relations table from source SRNC;

Indicating member is finished in first modification, is used for returning the message that this eBS of indication has finished the modification of described route mapping relations table to described source SRNC after described route mapping relations table modification is finished.

18. evolution base station according to claim 16 is characterized in that, also comprises:

The one UATI receiving element is used to receive the UATI of the assignment again that described AT or target SRNC send;

The one UATI updating block is used for the UATI of described AT is updated to the UATI of described assignment again.

19. evolution base station according to claim 18 is characterized in that, also comprises:

Indicating member is finished in first renewal, is used for after the UATI of described AT is updated to the UATI of described assignment again, sends the message that is used to indicate the renewal of finishing described UATI to source SRNC and/or described target SRNC.

20. evolution base station according to claim 16 is characterized in that, also comprises:

First switches the initiation unit, is used for sending the request of session moving anchor point to described target SRNC, and request switches to described target SRNC with the described AT of current service.

21. a signaling wireless network controller is characterized in that, comprises:

Switch indicating member, be used for all eBS in the Active Set of AT and send to be used to indicate and carry out the message switched between SRNC, in this message, carry the ANID of target SRNC, notify described eBS to revise route mapping relations table according to this ANID.

22. signaling wireless network controller according to claim 21 is characterized in that, also comprises: the session information transmitting element is used for the session information of described AT is sent to described target SRNC.

23. signaling wireless network controller according to claim 22 is characterized in that, described session information transmitting element with the opportunity that the session information of described AT sends to described target SRNC is:

After the message of the modification that all eBS send in this SRNC receives described Active Set is used to indicate this eBS to finish described route mapping relations table; Perhaps

Receive the conversation shift request of described target SRNC transmission at this SRNC after; Perhaps

During to conversation shift request that described target SRNC sends, in this conversation shift request, carry the session information of described AT at this SRNC.

24. signaling wireless network controller according to claim 21 is characterized in that, also comprises:

The UATI releasing unit is used to discharge the UATI that this SRNC is described AT assignment.

25. signaling wireless network controller according to claim 24 is characterized in that, described UATI releasing unit discharges this SRNC and opportunity of the UATI of described AT assignment is:

Described UATI releasing unit receive from described target SRNC be used to indicate finish the message of switching between described SRNC after, discharge the UATI that this SRNC is described AT assignment; Perhaps

The described UATI releasing unit message that is used to indicate the renewal of finishing described UATI that all eBS send in receiving described Active Set, and receive from described target SRNC be used to indicate finish the message of switching between described SRNC after, discharge the UATI that this SRNC is described AT assignment.

26. signaling wireless network controller according to claim 21 is characterized in that, also comprises:

Second switches the initiation unit, is used for sending the request of session moving anchor point to described target SRNC, and request switches to described target SRNC with described AT.

27. a signaling wireless network controller is characterized in that, comprises:

The one UATI transmitting element is used for by the special-purpose route of the SRNC of amended described AT the described UATI assignment unit UATI of assignment again being sent to described AT.

28. signaling wireless network controller according to claim 27 is characterized in that, also comprises:

The session information receiving element is used for receiving from the source SRNC of described AT the session information of this AT;

Described UATI assignment unit is described AT assignment UATI again according to the described session information of receiving.

29. signaling wireless network controller according to claim 27 is characterized in that, also comprises:

Receiving element is finished in renewal, is used to receive the message that is used to indicate the renewal of finishing UATI that described AT sends;

The 2nd UATI transmitting element, be used for after receiving the message that is used to indicate the renewal of finishing UATI that described AT sends, all eBS send the UATI of described assignment again in described Active Set, indicate these eBS that the UATI of described AT is updated to this UATI of assignment again.

30. according to each described signaling wireless network controller in the claim 27 to 29, it is characterized in that, also comprise:

Switch and to finish indicating member, be used for all eBS send in receiving described Active Set the message that is used to indicate the renewal of finishing described UATI after, send to be used to indicate to the source of described AT SRNC and finish the message of switching between SRNC; Perhaps

Described switching is finished indicating member and is used for after the message of receiving from described AT that is used to indicate the renewal of finishing UATI, sends to be used to indicate to described source SRNC and finishes the message of switching between SRNC.

31. one kind accesses terminal, and it is characterized in that, comprises:

The 2nd UATI updating block is used for the UATI of this AT is updated to the UATI of described assignment again;

Secondary route mapping relations table is revised the unit, is used for revising route mapping relations table according to the UATI of described assignment again, the ANID of the special-purpose route correspondence of SRNC of this AT is revised as the ANID of described target SRNC.

32. according to claim 31 accessing terminal is characterized in that, also comprises:

The 3rd UATI transmitting element is used for behind the UATI that receives described assignment again, and all eBS send the UATI of described assignment again in the Active Set of this AT, indicate these eBS that the UATI of this AT is updated to this UATI of assignment again.

33. according to claim 31 accessing terminal is characterized in that, also comprises:

Indicating member is finished in second renewal, be used for the UATI of this AT being updated to the UATI of described assignment again at described the 2nd UATI updating block, and after described modification is finished in described secondary route mapping relations table modification unit, send the message that is used to indicate the renewal of finishing UATI to described target SRNC.