CN103533585B

CN103533585B - The method for obligating and system of resource bearing

Info

Publication number: CN103533585B
Application number: CN201210229715.5A
Authority: CN
Inventors: 邹常乐; 梁爽
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2012-07-04
Filing date: 2012-07-04
Publication date: 2019-04-23
Anticipated expiration: 2032-07-04
Also published as: WO2014005525A1; CN103533585A

Abstract

The invention discloses a kind of method for obligating of resource bearing and systems, in the above-mentioned methods, target network base station system receives the request message from target network grouping controlled entity, wherein, it is carried in the request message and is used to indicate the instruction information that the packet switch PS carrying information progress resource bearing that target network base station system uses target network grouping controlled entity to get from source network grouping controlled entity is reserved；Information is reserved according to the PS carrying information progress resource bearing received as indicated for target network base station system.The technical solution provided according to the present invention has reached the guarantee reverse single-standby service continuity successful execution under non DTM mode.

Description

The method for obligating and system of resource bearing

Technical field

The present invention relates to the communications fields, in particular to the method for obligating and system of a kind of resource bearing.

Background technique

IP multimedia subsystem (IP Multimedia Core Network Subsystem, referred to as IMS) is by One kind that third generation partnership project (3rd Generation Partnership Project, referred to as 3GPP) proposes is based on The network architecture of network interconnection agreement (InternetProtocol, referred to as IP), construct one it is open and flexible Service environment supports multimedia application, colourful multimedia service can be provided for user.

In IMS business system, control layer and operation layer are separated from each other, wherein and control layer does not provide specific business, Only the functions such as necessary triggering, routing, charging are provided to operation layer.Business triggering and control function are by calling meeting in control layer Talk about control function (Call Session Control Function, referred to as CSCF) completion.Call session control function can To be divided into following three types:

Type one, Proxy Call Session Control Function (Proxy-CSCF, referred to as P-CSCF)；

Type two, query call conversation control function (Interrogating-CSCF, referred to as I-CSCF)；

Type three, service call conversation control function (Serving-CSCF, referred to as S-CSCF)；

Wherein, that take the main responsibility is S-CSCF, and I-CSCF is then optional.

Operation layer is made of a series of application servers (Application Server, referred to as AS), Ke Yiti For specific business service.AS can be independent entity, can also exist in S-CSCF.Control layer (S-CSCF) is according to user Signing information control business triggering, call AS on business, realize business function.

End-to-end equipment in session is known as user equipment (UserEquipment, abbreviation UE), is responsible for the friendship with user Mutually, some UE have the modes of a variety of access networks, wherein may include: by the packet switch of 3GPP (Packet Switch, Referred to as PS) domain access network, pass through the ps domain access network of other non-3 gpp, it might even be possible to pass through circuit switching (Circuit Switch, referred to as CS) domain access network.

If CS network configuration enhancing mobile switching centre (enhanced Mobile Switch Center, referred to as EMSC), by eMSC offer SIP(Session Initial Protocol, initial session protocol) interface comes and IMS network is handed over Mutually, then IMS network and the interaction of CS network can be realized by eMSC.

For the UE with plurality of access modes, if the UE moment is only capable of using a kind of access way, Talk business is carrying out under the access way of 2/3G network, and the talk business is provided in 2/3G network by the domain CS.When It is long term evolution (Long Term Evolution, abbreviation that UE, which is moved to other areas and needs to change the access way that it is used, When accessing (high speed packet access, referred to as HSPA) network insertion for LTE) network or high-speed packet, UE and The talk business that network can provide certain mode and be carrying out UE is not disrupted.However since talk business is in these networks It is to be provided by ps domain, aforementioned capabilities are properly termed as single continuity for being switched to ps domain from the domain CS to terminal speech business, also may be used Referred to as reverse single-standby service continuity (reverse Single Radio Voice Call Continuity, rSRVCC), Ground is corresponded, if it is UE from LTE network or HSPA Network Mobility to 2/3G network, is then properly termed as single to terminal traffic Continuity may be also referred to simply as single standby service continuity (SRVCC).

Fig. 1 is the reverse single-standby service continuity realization method flow chart according to the relevant technologies.As shown in Figure 1, describing Call is established between UE1 and UE2, UE1 is to establish call by the domain CS of 2/3G network.Therefore, connect in call media path Meet UE1 is one section of CS media connection, while there are also movable PS business by UE1, and accordingly, there exist movable PS service bearer companies It connects.Need to change the ps domain that the access way that it is used is LTE or HSPA when UE1 is mobile, UE1 realizes that reversed single standby service is continuous The process of property, wherein may include following processing step:

In the related art, UE1 passes through the domain CS and the domain source network CS controlled entity, i.e. mobile switching centre (Mobile Switching Center, referred to as MSC) with UE1 session is established, while there are also movable PS business by UE1, such as: IMS note Volume, accordingly, there exist the connections of movable PS service bearer；UE1 sends measurement report to for its source network serviced, with reporting subdistrict Signal strength measurement information；

Step S102: the source network base station system for UE1 service is sentenced according to cell signal strength information each in measurement report PS target network near breaking is more suitable for servicing for UE1, then determines to execute handover operation, source network base station system is sent out to MSC The domain CS switching request is sent, such as: send switching request (Handover required) message；

Step S104:MSC receives switching request, to target network grouping controlled entity (such as: MME or SGSN) initiate CS To PS switching request, such as: send CS to PS Forward Relocation request；It is carried in the request message It is active to target container Source to Target Transparent Container, i.e. carrying all presence of active side network PS carry information；

Step S106:MSC sends switching to switching control function and prepares message, such as: SIP INFO message, notice switching The triggering of control function rSRVCC process；Switching control function controls switching control gateway and reserves resource, and by the matchmaker of reserved resource Body information is sent to MSC by SIP INFO message, such as: IP address and port numbers on switching control gateway, and may The media encoding and decoding used after the switching of carrying；

Step S108: target network be grouped controlled entity to source network grouping controlled entity (such as: SGSN) send obtain Ps domain context request, such as: send PDP Context Request message；Source network is grouped controlled entity and returns in ps domain Context information, such as: it sends PDP Context Response message and carries PDP Context；

Step S110: target network controlled entity to target network base station system (such as: eNB or RNC) send switching ask It asks, such as: send switching request (Handover Request) message, wherein carried in the message by step S108 from source The carrying information of PS existing for the source that network packet controlled entity obtains and Source to Target Transparent Container；Target network base station system reserves resource according to the relevant technologies, then sends switching response message, such as: it sends Handover Response message；

Step S112: target network controlled entity sends CS to PS switching response message to MSC, such as: send CS to PS Forward Relocation Response message；

Step S114:MSC to source network base station system (such as: RNC or BSS) send switching command, such as: send Handover Command message；

Step S116: source network base station system sends switching command to UE1, such as: send Handover From UTRAN Message；After source network base station system sends switching command, then receives and be sent to the media data of UE1 and can all take the mode of discarding It is handled, because UE1 will be switched off existing wireless connection after receiving switching command, data have no idea to be sent to UE1. After UE1 receives switching command, it is modulated to target network ps domain access target network；

Step S118:MSC sends access switching request to switching control entity, such as: SIP INFO message, access control Entity control access control gateway sends downstream media data to UE target network, and opens the reserved media resource of gateway；

After step S120:UE1 accesses target network, handoff notification message is sent to target network base station system, such as: hair Send Handover Notify message；

Step S122: target network base station system sends handoff notification message to target network control network element；

Step S124: target network controls the bearer connection that network element updates core net, such as: pass through destination service gateway (such as: SGW) to target data gateway (such as: PDN GW) send Modify Bearer Request message so that target network Network base station system establishes bearer connection by target web service gateway and target data gateway；

Step S126: target data gateway is interacted with policy control functions, and user is allowed to receive and dispatch on default bearing Voice traffic data, diminution Voice traffic data break period meet the needs of switching；

Step S128:UE sends IMS business continuance switching request to switching control function, such as: send SIP INVITE message, wherein reversed single mode switching session identification (Session Transfer is carried in the message Identifier-reverse Single Radio, referred to as STI-rSR)；STI-rSR be directed toward switching control function can Route Distinguisher is sent to UE by switching control function before UE during source ps domain executes IMS registration；

Step S130-S132: proxy-call session control function passes through and policy control functions interaction, for switching request foundation Audio call dedicated bearing；So far, the connection of IMS media is set up between UE1 and UE2, and UE1 passes through with data network gateway Target network base station system and target web service gateway set up bearer connection, so that UE1 can continue to converse with UE2, UE1 PS business can continue.

In the related technology, if UE is in non-double-transmission mode (non Dual Transfer Mode, letter in source network Referred to as non-DTM), then the PS business of UE needs to be kept (suspended) when carrying out CS calling, at this time in source target network The CS call bearer information for only having active user in network base station system carries information without the PS of the user.Source in step S104 Network base station system can not properly generate source to target container (Source to Target Transparent Container), It can possibly even lack.And in the related art, if Source to Target Transparent Container is lacked, Target network base station system will refuse above-mentioned switching request, cause entirely to switch i.e. single standby service continuity procedure failure.

Summary of the invention

The present invention provides a kind of method for obligating of resource bearing and systems, at least to solve in the related technology in source network In the case that base station system can not properly generate or lack source to target container, single standby service continuity procedure failure will lead to The problem of.

According to an aspect of the invention, there is provided a kind of method for obligating of resource bearing.

The method for obligating of resource bearing according to the present invention includes: that target network base station system is received from target network It is grouped the request message of controlled entity, wherein carry in the request message and be used to indicate target network base station system using mesh It is pre- that the packet switch PS carrying information that mark network packet controlled entity is got from source network grouping controlled entity carries out resource bearing The instruction information stayed；Information is pre- according to the PS carrying information progress resource bearing received as indicated for target network base station system It stays.

Preferably, the instruction information carried in above-mentioned request message is that target network is grouped controlled entity in request message The explicit identification information of addition.

Preferably, above-mentioned request message is switching request message, wherein the instruction information carried in the switching request message For source to target container.

Preferably, the switching request message from target network grouping controlled entity is received in target network base station system Before, further includes: source network base station system modifies to source to target container.

Preferably, include following one to the modification in source to target container: source is carried into information with PS into target container The corresponding parameter value of corresponding parameter name is set to sky；By source, into target container, parameter corresponding with PS carrying information is deleted.

Preferably, target network base station system as indicated information according to receive PS carrying information carry out resource bearing Reserved includes: that target network base station system obtains source to target container；Target network base station system according to modified source extremely The instruction of target container carries out resource bearing according to the PS carrying information carried in switching request message and reserves.

Preferably, above-mentioned request message is switching request message, wherein the instruction information carried in the switching request message It is active to target container not carried in switching request message.

Preferably, the switching request message from target network grouping controlled entity is received in target network base station system Before, further includes: source network base station system does not generate source to target container.

Preferably, target network base station system as indicated information according to receive PS carrying information carry out resource bearing Reserved includes: that target network base station system is had not been obtained in switching request message to source to target container；Target network base station system System carries information progress resource bearing according to PS according to the instruction having not been obtained to source to target container and reserves.

Preferably, above-mentioned request message is resource reservation request message.

Preferably, the resource reservation request from target network grouping controlled entity is received in target network base station system Before message, source network base station system includes following one to the processing in source to target container: by source into target container with PS The corresponding parameter value of the relevant parameter name of carrying information is set to sky；By source into target container to the relevant ginseng of PS carrying information Number is deleted；Source is not generated to target container.

Preferably, it includes: mesh that it is reserved, which to carry out resource bearing, according to the PS carrying information received for target network base station system Mark network base station system obtains PS carrying information from resource reservation request message；Target network base station system is according to getting It is reserved that PS carries information progress resource bearing.

Preferably, after target network base station system is reserved according to the PS carrying information progress resource bearing received, Further include: the target network where user equipment UE access target network base station system, and sent out to the network entity of target network Send access response message, wherein the network entity of target network includes: target network base station system and target network grouping control Entity, access response message includes following one: switch acknowledgment message, tracing section updating request message, Routing Area Update request Message.

Preferably, in the target network where UE access target network base station system, and to the network entity of target network Send access response message after, further includes: target network base station system receive from UE switch acknowledgment message or with Track area updates request message or Routing Area Update request message；The switch acknowledgment message that target network base station system will receive Either tracing section updating request message or Routing Area Update request message are forwarded to target network grouping controlled entity.

Preferably, it is carried in resource reservation request message and the reserved instruction letter of resource bearing is carried out using PS carrying information Breath.

Preferably, in the target network where UE access target network base station system, and to the network entity of target network It sends and accesses after response message, further includes: target network base station system is true from the switching of UE according to instruction information reception Recognize message or tracing section updating request message or Routing Area Update request message；Target network base station system will receive Switch acknowledgment message or tracing section updating request message or Routing Area Update request message are forwarded to target network grouping control Entity processed.

According to another aspect of the present invention, a kind of reserved system of resource bearing is provided.

The reserved system of resource bearing according to the present invention includes: target network base station system；Target network base station system It include: the first receiving module, for receiving the request message from target network grouping controlled entity, wherein request message In carry be used to indicate target network base station system using target network be grouped controlled entity from source network be grouped controlled entity The packet switch PS carrying information got carries out the reserved instruction information of resource bearing；Resource bearing reserves module, for according to Indicate that information carries out resource bearing according to the PS carrying information received and reserves.

Preferably, above system further include: source network base station system；Source network base station system includes: modified module, is used for It modifies to source to target container.

Preferably, it includes: first acquisition unit that resource bearing, which reserves module, for obtaining source to target container；At first Unit is managed, information progress resource bearing is carried according to PS for the instruction according to modified source to target container and is reserved.

Preferably, source network base station system includes: processing module, for not generating source to target container.

Preferably, it includes: second acquisition unit that resource bearing, which reserves module, for having not been obtained in switching request message Source is to target container；The second processing unit, for according to the instruction having not been obtained to source to target container according to PS carry information into Row resource bearing is reserved.

Preferably, it includes: third acquiring unit that above-mentioned resource bearing, which reserves module, for from resource reservation request message It obtains PS and carries information；Third processing unit, it is reserved for carrying out resource bearing according to the PS carrying information got.

Preferably, above system further include: user equipment (UE)；UE includes: AM access module, for accessing target network base station Target network where system；First sending module, for sending access response message to the network entity of target network, In, the network entity of target network includes: target network base station system and target network grouping controlled entity, accesses response message Including following one: switch acknowledgment message, tracing section updating request message, Routing Area Update request message.

Preferably, target network base station system further include: the second receiving module, for receiving the switching confirmation from UE Message or tracing section updating request message or Routing Area Update request message；Second sending module, for what will be received Switch acknowledgment message or tracing section updating request message or Routing Area Update request message are forwarded to target network grouping control Entity processed.

Preferably, the second receiving module, be also used to according to instruction information receive from UE switch acknowledgment message or Tracing section updating request message or Routing Area Update request message；Second sending module, the switching for being also used to receive are true Recognize message or tracing section updating request message or Routing Area Update request message is forwarded to target network grouping controlled entity.

Through the invention, in the case where source network base station system can not properly generate or lack source to target container, The packet switch PS carrying information that controlled entity is got from source network grouping controlled entity is grouped using target network and carries out resource Carrying is reserved, and the feelings in source to target container can not be properly generated or lack in source network base station system in the related technology by solving Under condition, the problem of will lead to single standby service continuity procedure failure, and then reached guarantee under non DTM mode it is reversed it is single to Business continuance successful execution.

Detailed description of the invention

The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:

Fig. 1 is the reverse single-standby service continuity realization method flow chart according to the relevant technologies；

Fig. 2 is the flow chart of the method for obligating of resource bearing according to an embodiment of the present invention；

Fig. 3 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment one according to the present invention Flow chart；

Fig. 4 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment two according to the present invention Flow chart；

Fig. 5 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment three according to the present invention Flow chart；

Fig. 6 is the structural block diagram of the reserved system of resource bearing according to an embodiment of the present invention；

Fig. 7 is the structural block diagram of the reserved system of the resource bearing of preferred embodiment one according to the present invention；

Fig. 8 is the structural block diagram of the reserved system of the resource bearing of preferred embodiment two according to the present invention；And

Fig. 9 is the structural block diagram of the reserved system of the resource bearing of preferred embodiment three according to the present invention.

Specific embodiment

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.

Fig. 2 is the flow chart of the method for obligating of resource bearing according to an embodiment of the present invention.As shown in Fig. 2, this method can To include following processing step:

Step S202: target network base station system receives the request message from target network grouping controlled entity, In, it is carried in the request message and is used to indicate target network base station system controlled entity is grouped from source network using target network The packet switch PS carrying information that grouping controlled entity is got carries out the reserved instruction information of resource bearing；

Step S204: target network base station system as indicated hold according to the PS carrying information progress resource received by information It carries reserved.

In the related technology, in the case where source network base station system can not properly generate or lack source to target container, It will lead to single standby service continuity procedure failure.Using method as shown in Figure 2, list in the ip multimedia subsystem is to terminal During voice service is switched to the resource reservation of ps domain from the domain CS, if source network base station system can not be properly generated or be lacked Mistake source can then be grouped controlled entity using target network and hand over from the packet that source network grouping controlled entity is got to target container Changing PS carrying information, to carry out resource bearing reserved, solve can not properly generate in source network base station system in the related technology or In the case where missing source to target container, the problem of will lead to single standby service continuity procedure failure, and then reached Guarantee reverse single-standby service continuity successful execution under nonDTM mode.

In a preferred implementation process, the instruction information carried in above-mentioned request message can be real for target network grouping control The explicit identification information that body adds in request message.

Preferably, above-mentioned request message can be switching request message, wherein the instruction carried in the switching request message Information can be source to target container.

In a preferred embodiment, in the case where UE and source network are in non DTM mode, in source network base station system There is only carrying information relevant to current CS voice, carry information without any other PS.Since PS carrying information lacks Lose, source network base station system can to source to target container (Source to Target Transparent Container) into Row processing is obtained with indicating that target network base station system is grouped controlled entity using target network from source network grouping controlled entity It is reserved that the PS carrying information arrived carries out resource bearing.

Preferably, in step S202, target network base station system receives cutting from target network grouping controlled entity It changes before request message, can also include following processing:

Step S1: source network base station system modifies to source to target container.

In a preferred embodiment, source network base station system sends the domain CS switching request to MSC, such as: send switching request Message；Since PS carries loss of learning, by source, the relevant parameter of PS carrying into target container is set as source network base station system Sky, or the related PS bearing parameter of loss of learning is not carried.

In a preferred implementation process, the above-mentioned modification to source to target container can include but is not limited to following one:

Modification one, by source, into target container, parameter value corresponding with the corresponding parameter name of PS carrying information is set to sky；

In a preferred embodiment, parameter corresponding with PS carrying information generally includes two parts, i.e. parameter name and the ginseng It is several to claim corresponding parameter value, it, can will be with parameter name with retention parameter title when modifying to source to target container Corresponding parameter value is set to sky.

Modification two, by source, into target container, parameter corresponding with PS carrying information is deleted.

In a preferred embodiment, can by source into target container to the relevant parameter of PS carrying information, including parameter name Claim and corresponding parameter value is performed both by delete processing.

Preferably, in step S204, target network base station system as indicated believe according to the PS carrying received by information It may include following operation that it is reserved, which to carry out resource bearing, for breath:

Step S2: target network base station system obtains source to target container；

Step S3: target network base station system disappears according to the instruction in modified source to target container according to switching request It is reserved that the PS carrying information carried in breath carries out resource bearing.

In a preferred embodiment, target network controlled entity can send switching request to target network base station system and disappear Breath, wherein carried in the message from source network grouping controlled entity obtain source network side existing for PS carrying information and Source to Target Transparent Container；Target network base station system finds Source to Target Loss of learning is carried in Transparent Container, then (is ignored according to the information in Handover request Information in Source to Target Transparent Container) carry out resource bearing reservation process.

Above-mentioned preferred implementation process is further described below with reference to preferred embodiment shown in Fig. 3.

Fig. 3 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment one according to the present invention Flow chart.As shown in figure 3, this Figure illustrates call is established between UE1 and UE2, UE1 is established by the domain CS of 2/3G network Call, therefore, connect UE1 in media path of conversing is one section of CS media connection, while there are also by the PS of suspend by UE1 Business, such as: IMS registration, so in the presence of by the PS service bearer connection of suspend.But in source network base station system not There is such relevant information, is only remained in source network grouping controlled entity；Need to change its access way used when UE1 is moved to For the ps domain of LTE or HSPA, UE1 realizes the process of reverse single-standby service continuity.Since UE1 and network are in non at this time DTM mode, so only having the relevant carrying information of current CS voice on actual source network base station system, without any other PS Carry information.UE1 sends measurement report to for its source network serviced, to report cell signal strength metrical information.The process May include following operating procedure:

Step S302: the source network base station system for UE1 service is sentenced according to cell signal strength information each in measurement report PS target network near breaking is more suitable for servicing for UE1, then determines to execute handover operation.Source network base station system is sent out to MSC The domain CS switching request is sent, such as: send switching request (Handover required) message；Since PS carries loss of learning, source By source, the relevant parameter of PS carrying into target container is set as empty to network base station system, or does not carry the correlation of loss of learning PS bearing parameter；

Step S304:MSC receives switching request, to target network grouping controlled entity (such as: MME or SGSN) initiate The switching request of CS to PS, such as: send CS to PS Forward Relocation request, wherein the request Source to Target Transparent Container is carried in message；

Step S306:MSC sends switching to switching control function and prepares message, such as: SIP INFO message, notice switching The triggering of control function rSRVCC process；Switching control function controls switching control gateway and reserves resource, and by the matchmaker of reserved resource Body information is sent to MSC by SIP INFO message, such as: IP address and port numbers on switching control gateway, and may The media encoding and decoding used after the switching of carrying；

Step S308: target network be grouped controlled entity to source network grouping controlled entity (such as: SGSN) send obtain Ps domain context request, such as: send PDP Context Request message；Source network is grouped controlled entity and returns in ps domain Context information, such as: it sends PDP Context Response message and carries PDP Context；

Step S310: target network controlled entity to target network base station system (such as: eNB or RNC) send switching ask It asks, such as: send Handover Request message, wherein carry to be grouped by step S308 from source network in the message and control The carrying information of PS existing for the source that entity processed obtains and Source to Target Transparent Container；Mesh Loss of learning is carried in mark network base station system discovery Source to Target Transparent Container, then basis Information in Handover request (ignores the letter in Source to Target Transparent Container Breath) carry and reserves, switching response message is then sent, such as: send Handover Response message；

In the preferred embodiment, target network grouping controlled entity can also refer in this Handover request message Show that the UE message is different from message in the related technology, without the concern for Source to Target Transparent Carrying information in Container, such as: indicate that the message is CS to PS SRVCC handover request；

Step S312: target network controlled entity sends CS to PS switching response message to MSC, such as: send CS to PSForward Relocation Response message；

Step S314:MSC to source network base station system (such as: RNC or BSS) send switching command, such as: send Handover Command message；

Step S316: source network base station system sends switching command to UE1, such as: send Handover From UTRAN Message；After source network base station system sends switching command, then receives and be sent to the media data of UE1 and can all take the mode of discarding It is handled, because UE1 will be switched off existing wireless connection after receiving switching command, data have no idea to be sent to UE1. After UE1 receives switching command, it is modulated to target network ps domain access target network；

Step S318:MSC sends access switching request to switching control entity, such as: SIP INFO message, access control Entity control access control gateway sends downstream media data to UE target network, and opens the reserved media resource of gateway；

After step S320:UE1 accesses target network, handoff notification message is sent to target network base station system, such as: hair Send HandoverNotify message；

Step S322: target network base station system sends handoff notification message to target network control network element；

Step S324: target network controls the bearer connection that network element updates core net, such as: pass through destination service gateway (such as: SGW) to target data gateway (such as: PDN GW) send Modify Bearer Request message so that target network Network base station system establishes bearer connection by target web service gateway and target data gateway；

Step S326: target data gateway is interacted with policy control functions, and user is allowed to receive and dispatch on default bearing Voice traffic data, diminution Voice traffic data break period meet the needs of switching；

Step S328:UE sends IMS business continuance switching request to switching control function, such as: send SIP INVITE message, wherein reversed single mode switching session identification (Session Transfer is carried in the message Identifier-reverse Single Radio, referred to as STI-rSR)；STI-rSR be directed toward switching control function can Route Distinguisher is sent to UE by switching control function before UE during source ps domain executes IMS registration；

Step S330-S332: proxy-call session control function passes through and policy control functions interaction, for switching request foundation Audio call dedicated bearing；So far, the connection of IMS media is set up between UE1 and UE2, and UE1 passes through with data network gateway Target network base station system and target web service gateway set up bearer connection, so that UE1 can continue to converse with UE2, UE1 PS business can continue.

So far, the connection of IMS media is set up between UE1 and UE2, and UE1 and data network gateway pass through target network Base station system and target web service gateway set up bearer connection, so that UE1 can continue to converse with UE2, the PS business of UE1 It can continue.

Preferably, above-mentioned request message can be switching request message, wherein the instruction carried in the switching request message Information can be active to target container not carry in switching request message.

In a preferred embodiment, in the case where UE and source network are in non DTM mode, in source network base station system There is only carrying information relevant to current CS voice, carry information without any other PS.Since PS carrying information lacks It loses, the processing mode for not generating source to target container can be directly used in source network base station system, to indicate target network base station System is grouped the PS carrying information progress resource that controlled entity is got from source network grouping controlled entity using target network and holds It carries reserved.

Step S1: source network base station system does not generate source to target container.

In a preferred embodiment, source network base station system sends the domain CS switching request to MSC；Since PS carrying information lacks It loses, source network base station system does not generate source to target container, i.e., can not carry in the Handover required message Source to Target Transparent Container。

Step S2: target network base station system is had not been obtained in switching request message to source to target container；

Step S3: target network base station system according to the instruction having not been obtained to source to target container according to PS carry information into Row resource bearing is reserved.

In a preferred embodiment, target network controlled entity sends switching request message to target network base station system, In, PS carrying information existing for the source obtained from source network grouping controlled entity is carried in the message, without carrying Source to Target Transparent Container；Target network base station system finds Source to Target Transparent Container missing, then (ignore Source to according to the information in Handover request Information in Target Transparent Container) carry out resource bearing reservation process.

Above-mentioned preferred implementation process is further described below with reference to preferred embodiment shown in Fig. 4.

Fig. 4 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment two according to the present invention Flow chart.As shown in figure 4, this Figure illustrates call is established between UE1 and UE2, UE1 is established by the domain CS of 2/3G network Call, therefore, connect UE1 in media path of conversing is one section of CS media connection, while there are also by the PS of suspend by UE1 Business, such as: IMS registration, so in the presence of by the PS service bearer connection of suspend, but in source network base station system not There is such relevant information, is only remained in source network grouping controlled entity；Need to change its access way used when UE1 is moved to For the ps domain of LTE or HSPA, UE1 realizes the process of reverse single-standby service continuity.Since UE1 and network are in non at this time DTM mode, so only having the relevant carrying information of current CS voice on actual source network base station system, without any other PS Carry information；UE1 sends measurement report to for its source network serviced, to report cell signal strength metrical information.The process May include following operating procedure:

Step S402: the source network base station system for UE1 service is sentenced according to cell signal strength information each in measurement report PS target network near breaking is more suitable for servicing for UE1, then determines to execute handover operation.Source network base station system is sent out to MSC The domain CS switching request is sent, such as: send switching request (Handover required) message；Since PS carries loss of learning, source Network base station system does not generate source to target container (Source to Target Transparent Container), i.e., should Source to Target Transparent Container is not carried in Handover required message；

Step S404:MSC receives switching request, to target network grouping controlled entity (such as: MME or SGSN) initiate The switching request of CS to PS, such as: send CS to PS Forward Relocation request, wherein the request Source to Target Transparent Container is not carried in message；

Step S406:MSC sends switching to switching control function and prepares message, such as: SIP INFO message, notice switching The triggering of control function rSRVCC process；Switching control function controls switching control gateway and reserves resource, and by the matchmaker of reserved resource Body information is sent to MSC by SIP INFO message, such as: IP address and port numbers on switching control gateway, and may The media encoding and decoding used after the switching of carrying；

Step S408: target network be grouped controlled entity to source network grouping controlled entity (such as: SGSN) send obtain Ps domain context request, such as: send PDP Context Request message；Source network is grouped controlled entity and returns in ps domain Context information, such as: it sends PDP Context Response message and carries PDP Context；

Step S410: target network controlled entity to target network base station system (such as: eNB or RNC) send switching ask It asks, such as: send Handover Request message, wherein carry to be grouped by step S408 from source network in the message and control PS existing for the source that entity processed obtains carries information, without carrying Source to Target Transparent Container；Target network base station system finds Source to Target Transparent Container missing, then root (ignore the letter in Source to Target Transparent Container according to the information in Handover request Breath) carry and reserves, switching response message is then sent, such as: send Handover Response message；

In a preferred embodiment, target network grouping controlled entity can also indicate in this Handover request message The UE message is different from message in the related technology, without the concern for Source to Target Transparent Carrying information in Container, such as: indicate that the message is CS to PS SRVCC handover request；Target network base station system System only considers the carrying information in Handover request in reserved resource according to the instruction information；

Step S412: target network controlled entity sends CS to PS switching response message to MSC, such as: send CS to PSForward Relocation Response message；

Step S414:MSC to source network base station system (such as: RNC or BSS) send switching command, such as: send Handover Command message；

Step S416: source network base station system sends switching command to UE1, such as: send Handover From UTRAN Message；After source network base station system sends switching command, then receives and be sent to the media data of UE1 and can all take the mode of discarding It is handled, because UE1 will be switched off existing wireless connection after receiving switching command, data have no idea to be sent to UE1. After UE1 receives switching command, it is modulated to target network ps domain access target network；

Step S418:MSC sends access switching request to switching control entity, such as: SIP INFO message, access control Entity control access control gateway sends downstream media data to UE target network, and opens the reserved media resource of gateway；

After step S420:UE1 accesses target network, handoff notification message is sent to target network base station system, such as: hair Send HandoverNotify message；

Step S422: target network base station system sends handoff notification message to target network control network element；

Step S424: target network controls the bearer connection that network element updates core net, such as: pass through destination service gateway (such as: SGW) to target data gateway (such as: PDN GW) send Modify Bearer Request message so that target network Network base station system establishes bearer connection by target web service gateway and target data gateway；

Step S426: target data gateway is interacted with policy control functions, and user is allowed to receive and dispatch on default bearing Voice traffic data, diminution Voice traffic data break period meet the needs of switching；

Step S428:UE sends IMS business continuance switching request to switching control function, such as: send SIP INVITE message, wherein reversed single mode switching session identification (Session Transfer is carried in the message Identifier-reverse Single Radio, referred to as STI-rSR)；STI-rSR be directed toward switching control function can Route Distinguisher is sent to UE by switching control function before UE during source ps domain executes IMS registration；

Step S430-S432: proxy-call session control function passes through and policy control functions interaction, for switching request foundation Audio call dedicated bearing；So far, the connection of IMS media is set up between UE1 and UE2, and UE1 passes through with data network gateway Target network base station system and target web service gateway set up bearer connection, so that UE1 can continue to converse with UE2, UE1 PS business can continue.

Preferably, above-mentioned request message can be resource reservation request message.

In a preferred embodiment, target network grouping controlled entity can not send switching to target network base station system and ask Message is sought, but sends resource reservation request message to target network base station system, target network base station system can be using money The target network carried in the reservation requests of source is grouped the PS carrying that controlled entity is got from source network grouping controlled entity It is reserved that information carries out resource bearing.

Preferably, in step S202, target network base station system receives the money from target network grouping controlled entity Can also include following processing before the reservation requests of source:

Step S1: source network base station system can include but is not limited to following one to the processing in source to target container:

Processing mode one, by source, into target container, parameter value corresponding to the relevant parameter name of PS carrying information is set to It is empty；

Processing mode two, by source, into target container, parameter relevant to PS carrying information is deleted；

Processing mode three does not generate source to target container.

In a preferred embodiment, since PS carries loss of learning, source network base station system can be by source into target container PS carries relevant parameter and is set as empty, can not also carry the related PS bearing parameter of loss of learning, can not also generate Source to Target Transparent Container, i.e., do not carry Source in Handover required message to Target Transparent Container。

Preferably, in step S204, target network base station system carries out resource according to the PS carrying information received and holds Carrying reserved may include following operation:

Step S2: target network base station system obtains PS carrying information from resource reservation request message；

Step S3: target network base station system carries out resource bearing according to the PS carrying information got and reserves.

In a preferred embodiment, target network controlled entity sends resource reservation request, example to target network base station system Such as: sending S1 initial context setup message or S1bearer modification message, wherein the message In carry from source network grouping controlled entity obtain source network side existing for PS carrying information；Target network base station system root Resource bearing reservation process is carried out according to the carrying information carried in resource reservation message.

Preferably, after target network base station system is reserved according to the PS carrying information progress resource bearing received, Can with the following steps are included:

Step S4:UE accesses the target network where target network base station system, and sends out to the network entity of target network Send access response message, wherein the network entity of target network may include: target network base station system and target network grouping Controlled entity, access response message can include but is not limited to following one: switch acknowledgment message, tracing section updating request disappear Breath, Routing Area Update request message.

Preferably, in the target network where step S4, UE access target network base station system, and to the net of target network Can also include following operation after network entity sends access response message:

Step S5: the reception of target network base station system disappears from switch acknowledgment message or the tracing section updating request of UE Breath or Routing Area Update request message；

Step S6: target network base station system by the switch acknowledgment message received or tracing section updating request message or Person's Routing Area Update request message is forwarded to target network grouping controlled entity.

In a preferred implementation process, it can carry in resource reservation request message and be held using PS carrying information progress resource Carry reserved instruction information.

Preferably, in the target network where step S4, UE access target network base station system, and to the net of target network Network entity send access response message after, can with the following steps are included:

Step S5: target network base station system receives the switch acknowledgment message or tracking from UE according to instruction information Area updates request message or Routing Area Update request message；

Above-mentioned preferred implementation process is further described below with reference to preferred embodiment shown in fig. 5.

Fig. 5 is the reverse single-standby service continuity method under non DTM mode of preferred embodiment three according to the present invention Flow chart.As shown in figure 5, this Figure illustrates call is established between UE1 and UE2, UE1 is established by the domain CS of 2/3G network Call, therefore, connect UE1 in media path of conversing is one section of CS media connection, while there are also by the PS of suspend by UE1 Business, such as: IMS registration, so in the presence of by the PS service bearer connection of suspend.But in source network base station system not There is such relevant information, is only remained in source network grouping controlled entity；Need to change its access way used when UE1 is moved to For the ps domain of LTE or HSPA, UE1 realizes the process of reverse single-standby service continuity.Since UE1 and network are in non at this time DTM mode, so only having the relevant carrying information of current CS voice on actual source network base station system, without any other PS Carry information.UE1 sends measurement report to for its source network serviced, to report cell signal strength metrical information.The process May include following operating procedure:

Step S502: the source network base station system for UE1 service is sentenced according to cell signal strength information each in measurement report PS target network near breaking is more suitable for servicing for UE1, then determines to execute handover operation.Source network base station system is sent out to MSC The domain CS switching request is sent, such as: send switching request (Handover required) message；Since PS carries loss of learning, source PS in source to target container (Source to Target Transparent Container) is carried phase by network base station system The parameter of pass is set as empty, and the related PS bearing parameter or source network base station system for not carrying loss of learning perhaps do not generate Source to Target Transparent Container, i.e., do not carry Source in Handover required message to Target Transparent Container；

Step S504:MSC receives switching request, to target network grouping controlled entity (such as: MME or SGSN) initiate The switching request of CS to PS, such as: send CS to PS Forward Relocation request, wherein according to step S502 may carry Source to Target Transparent Container in the request message；

Step S506:MSC sends switching to switching control function and prepares message, such as: SIP INFO message, notice switching The triggering of control function rSRVCC process；Switching control function controls switching control gateway and reserves resource, and by the matchmaker of reserved resource Body information is sent to MSC by SIP INFO message, such as: IP address and port numbers on switching control gateway, and may The media encoding and decoding used after the switching of carrying；

Step S508: target network be grouped controlled entity to source network grouping controlled entity (such as: SGSN) send obtain Ps domain context request, such as: send PDP Context Request message；Source network is grouped controlled entity and returns in ps domain Context information, such as: it sends PDP Context Response message and carries PDP Context；

Step S510: target network controlled entity to target network base station system (such as: eNB or RNC) send resource it is pre- Request is stayed, such as: S1initial context setup message or S1bearer modification message are sent, In, PS carrying information existing for the source obtained as step S508 from source network grouping controlled entity is carried in the message；Mesh Mark network base station system carries out carrying according to the carrying information carried in resource reservation message and reserves, and then sends handoff response and disappears Breath, such as: send resource reservation request response message；

In the preferred embodiment, target network grouping controlled entity can also indicate in the resource reservation request message The target side base station system message is different from message in the related technology, such as: indicate that the message is that CS to PS SRVCC is cut Change message；

Step S512: target network controlled entity sends CS to PS switching response message to MSC, such as: send CS to PS Forward Relocation Response message；

Step S514:MSC to source network base station system (such as: RNC or BSS) send switching command, such as: send Handover Command message；

Step S516: source network base station system sends switching command to UE1, such as: send Handover From UTRAN Message；After source network base station system sends switching command, then receives and be sent to the media data of UE1 and can all take the mode of discarding It is handled, because UE1 will be switched off existing wireless connection after receiving switching command, data have no idea to be sent to UE1. After UE1 receives switching command, it is modulated to target network ps domain access target network；

Step S518:MSC sends access switching request to switching control entity, such as: SIP INFO message, access control Entity control access control gateway sends downstream media data to UE target network, and opens the reserved media resource of gateway；

After step S520:UE1 accesses target network, handoff notification message is sent to target network base station system, such as: hair HandoverNotify message or UE1 is sent to execute tracing section updating (TrackingArea Update, referred to as TAU) request Message or Routing Area Update (Routing Area Update, referred to as RAU) request message；

Step S522: target network base station system sends handoff notification message or target to target network control network element The TAU or RAU that network base station system is initiated to target network control network element forwarding UE1；

Step S524: target network controls the bearer connection that network element updates core net, such as: pass through destination service gateway (such as: SGW) to target data gateway (such as: PDN GW) send Modify Bearer Request message so that target network Network base station system establishes bearer connection by target web service gateway and target data gateway；

Step S526: target data gateway is interacted with policy control functions, and user is allowed to receive and dispatch on default bearing Voice traffic data, diminution Voice traffic data break period meet the needs of switching；

Step S528:UE sends IMS business continuance switching request to switching control function, such as: send SIP INVITE message, wherein reversed single mode switching session identification (Session Transfer is carried in the message Identifier-reverse Single Radio, referred to as STI-rSR)；STI-rSR be directed toward switching control function can Route Distinguisher is sent to UE by switching control function before UE during source ps domain executes IMS registration；

Step S530-S532: proxy-call session control function passes through and policy control functions interaction, for switching request foundation Audio call dedicated bearing；So far, the connection of IMS media is set up between UE1 and UE2, and UE1 passes through with data network gateway Target network base station system and target web service gateway set up bearer connection, so that UE1 can continue to converse with UE2, UE1 PS business can continue.

Fig. 6 is the structural block diagram of the reserved system of resource bearing according to an embodiment of the present invention.As shown in fig. 6, the resource The reserved system of carrying may include: target network base station system 10；Target network base station system 10 may include: the first reception Module 100, for receiving the request message from target network grouping controlled entity, wherein carried in request message useful The packet that controlled entity is got from source network grouping controlled entity is grouped using target network in instruction target network base station system It exchanges PS carrying information and carries out the reserved instruction information of resource bearing；Resource bearing reserves module 102, for information as indicated It is reserved that resource bearing is carried out according to the PS carrying information received.

Using device as shown in FIG. 6, solve can not properly generate in source network base station system in the related technology or In the case where missing source to target container, the problem of will lead to single standby service continuity procedure failure, and then reached in non Guarantee reverse single-standby service continuity successful execution under DTM mode.

Preferably, as shown in fig. 7, above system can also include: source network base station system 20；Source network base station system 20 It may include: modified module 200, for modifying to source to target container.

Preferably, it as shown in fig. 7, it may include: first acquisition unit 1020 that above-mentioned resource bearing, which reserves module 102, uses In the source of acquisition to target container；First processing units 1022, for the instruction according to modified source to target container according to It is reserved that PS carries information progress resource bearing.

Preferably, as shown in figure 8, source network base station system 20 may include: processing module 202, for not generating source extremely Target container.

Preferably, it as shown in figure 8, it may include: second acquisition unit 1024 that resource bearing, which reserves module 102, is used for It is had not been obtained in switching request message to source to target container；The second processing unit 1026, for according to having not been obtained to source to target The instruction of container carries information progress resource bearing according to PS and reserves.

Preferably, as shown in figure 9, resource bearing reserve module 102 may include: third acquiring unit 1028, for from PS is obtained in resource reservation request message carries information；Third processing unit 1030, for carrying information according to the PS got It is reserved to carry out resource bearing.

Preferably, as shown in figure 9, above system can also include: UE 30；UE 30 may include: AM access module 300, For accessing the target network where target network base station system；First sending module 302, it is real for the network to target network Body sends access response message, wherein the network entity of target network may include: target network base station system and target network It is grouped controlled entity, access response message can include but is not limited to following one: switch acknowledgment message, tracing section updating request Message, Routing Area Update request message.

Preferably, it as shown in figure 9, above-mentioned target network base station system 10 can also include: the second receiving module 104, uses In reception from the switch acknowledgment message or tracing section updating request message or Routing Area Update request message of UE；Second Sending module 106, for asking the switch acknowledgment message received or tracing section updating request message or Routing Area Update Message is asked to be forwarded to target network grouping controlled entity.

In a preferred implementation process, it can carry in above-mentioned resource reservation request message and be provided using PS carrying information The reserved instruction information of source carrying.

Preferably, the second receiving module 104, be also used to according to instruction information receive from UE switch acknowledgment message or Person's tracing section updating request message or Routing Area Update request message；Second sending module 106, be also used to receive cuts It changes confirmation message or tracing section updating request message or Routing Area Update request message is forwarded to target network grouping control Entity.

It should be noted that the preferred work to interact between modules and each unit shown in Fig. 6 to Fig. 9 It may refer to embodiment shown in Fig. 2 to Fig. 5 as mode, details are not described herein again.

It can be seen from the above description that above example implements following technical effect (it should be noted that these Effect is the effect that certain preferred embodiments can achieve): guarantee reverse single-standby service continuity success under non DTM mode It executes.

Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored It is performed by computing device in the storage device, and in some cases, it can be to be different from shown in sequence execution herein Out or description the step of, perhaps they are fabricated to each integrated circuit modules or by them multiple modules or Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.

The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.

Claims

1. a kind of method for obligating of resource bearing characterized by comprising

If user equipment (UE), in the case where source network is in non-double-transmission mode non-DTM, target network base station system, which receives, to be come From in the request message of target network grouping controlled entity, wherein carried in the request message and be used to indicate the target Network base station system is grouped the packet switch PS that controlled entity is got from source network grouping controlled entity using the target network It carries information and carries out the reserved instruction information of resource bearing；

The target network base station system carries out resource according to the PS carrying information received according to the instruction information and holds It carries reserved.

2. the method according to claim 1, wherein the instruction information carried in the request message is institute State the explicit identification information that target network grouping controlled entity adds in the request message.

3. the method according to claim 1, wherein the request message is switching request message, wherein described The instruction information carried in switching request message is source to target container.

4. according to the method described in claim 3, it is characterized in that, receiving in the target network base station system from described Target network is grouped before the switching request message of controlled entity, further includes:

Source network base station system modifies to the source to target container.

5. according to the method described in claim 4, it is characterized in that, to the modification in the source to target container include it is following it One:

By the source, into target container, parameter value corresponding with the corresponding parameter name of PS carrying information is set to sky；

By the source, into target container, parameter corresponding with PS carrying information is deleted.

6. method according to any one of claim 3 to 5, which is characterized in that the target network base station system according to The instruction information is reserved according to the PS carrying information progress resource bearing received to include:

The target network base station system obtains the source to target container；

The target network base station system is according to the instruction in the modified source to target container according to the switching request It is reserved that the PS carrying information carried in message carries out resource bearing.

7. the method according to claim 1, wherein the request message is switching request message, wherein described The instruction information carried in switching request message is active to target container not carry in the switching request message.

8. the method according to the description of claim 7 is characterized in that receiving in the target network base station system from described Target network is grouped before the switching request message of controlled entity, further includes:

Source network base station system does not generate the source to target container.

9. method according to claim 7 or 8, which is characterized in that the target network base station system is according to the instruction Information is reserved according to the PS carrying information progress resource bearing received to include:

The source has not been obtained to target container in the target network base station system in the switching request message；

The target network base station system carries information according to the PS according to the instruction that the source has not been obtained to target container It is reserved to carry out resource bearing.

10. the method according to claim 1, wherein the request message is resource reservation request message.

11. according to the method described in claim 10, it is characterized in that, receiving in the target network base station system from institute Before the resource reservation request message for stating target network grouping controlled entity, the source network base station system is to source to target The processing of container includes following one:

By the source, into target container, parameter value corresponding to the relevant parameter name of PS carrying information is set to sky；

By the source, into target container, parameter relevant to PS carrying information is deleted；

The source is not generated to target container.

12. method described in 0 or 11 according to claim 1, which is characterized in that the target network base station system is according to receiving PS carrying information carry out that resource bearing is reserved to include:

The target network base station system obtains the PS carrying information from the resource reservation request message；

The target network base station system carries out resource bearing according to the PS carrying information got and reserves.

13. according to the method for claim 12, which is characterized in that in the target network base station system according to the reception After the PS carrying information progress resource bearing arrived is reserved, further includes:

Target network where target network base station system described in user equipment UE access, and it is real to the network of the target network Body sends access response message, wherein the network entity of the target network includes: the target network base station system and described Target network is grouped controlled entity, and the access response message includes following one: switch acknowledgment message, tracing section updating request Message, Routing Area Update request message.

14. according to the method for claim 13, which is characterized in that the target network base station system institute described in the UE access Target network, and after sending the access response message to the network entity of the target network, further includes:

The target network base station system receives the switch acknowledgment message or the tracing section updating from the UE Request message or the Routing Area Update request message；

The target network base station system is by the switch acknowledgment message received or the tracing section updating request message Or the Routing Area Update request message is forwarded to the target network grouping controlled entity.

15. according to the method for claim 14, which is characterized in that carry in the resource reservation request message using institute It states PS carrying information and carries out the reserved instruction information of resource bearing.

16. according to the method for claim 15, which is characterized in that the target network base station system institute described in the UE access Target network, and after sending the access response message to the network entity of the target network, further includes:

The target network base station system according to it is described instruction information receive from the UE the switch acknowledgment message or Tracing section updating request message described in person or the Routing Area Update request message；

17. a kind of reserved system of resource bearing characterized by comprising target network base station system；

The target network base station system includes:

First receiving module, if receiving and for user equipment (UE) in the case where source network is in non-double-transmission mode non-DTM From in the request message of target network grouping controlled entity, wherein carried in the request message and be used to indicate the target Network base station system is grouped the packet switch PS that controlled entity is got from source network grouping controlled entity using the target network It carries information and carries out the reserved instruction information of resource bearing；

Resource bearing reserves module, holds for carrying out resource according to the PS carrying information received according to the instruction information It carries reserved.

18. system according to claim 17, which is characterized in that the instruction information carried in the request message is The explicit identification information that the target network grouping controlled entity adds in the request message.

19. system according to claim 17, which is characterized in that the request message is switching request message, wherein institute Stating the instruction information carried in switching request message is source to target container.

20. system according to claim 19, which is characterized in that the system also includes: source network base station system；

The source network base station system includes:

Modified module, for modifying to the source to target container.

21. system according to claim 20, which is characterized in that the modification to the source to target container include it is following it One:

22. system described in any one of 9 to 21 according to claim 1, which is characterized in that the resource bearing reserves module packet It includes:

First acquisition unit, for obtaining the source to target container；

First processing units, for the instruction according to the modified source to target container according to the PS carry information into Row resource bearing is reserved.

23. system according to claim 17, which is characterized in that the request message is switching request message, wherein institute It is active to target container not carry in the switching request message to state the instruction information carried in switching request message.

24. system according to claim 23, which is characterized in that the source network base station system includes:

Processing module, for not generating the source to target container.

25. the system according to claim 23 or 24, which is characterized in that the resource bearing reserves module and includes:

Second acquisition unit, for the source to have not been obtained to target container in the switching request message；

The second processing unit is carried out for carrying information according to the PS according to the instruction that the source has not been obtained to target container Resource bearing is reserved.

26. system according to claim 17, which is characterized in that the request message is resource reservation request message.

27. system according to claim 26, which is characterized in that the resource bearing reserves module and includes:

Third acquiring unit, for obtaining the PS carrying information from the resource reservation request message；

Third processing unit, it is reserved for carrying out resource bearing according to the PS carrying information got.

28. system according to claim 27, which is characterized in that the system also includes: user equipment (UE)；

The UE includes:

AM access module, for accessing the target network where the target network base station system；

First sending module, for sending access response message to the network entity of the target network, wherein the target network The network entity of network includes: the target network base station system and target network grouping controlled entity, the access response Message includes following one: switch acknowledgment message, tracing section updating request message, Routing Area Update request message.

29. system according to claim 28, which is characterized in that the target network base station system further include:

Second receiving module, for receiving from the switch acknowledgment message of the UE or tracing section updating request Message or the Routing Area Update request message；

Second sending module, for by the switch acknowledgment message received or the tracing section updating request message or The Routing Area Update request message is forwarded to the target network grouping controlled entity.

30. system according to claim 29, which is characterized in that carry in the resource reservation request message using institute It states PS carrying information and carries out the reserved instruction information of resource bearing.

31. system according to claim 30, which is characterized in that

Second receiving module is also used to receive the switch acknowledgment message from the UE according to the instruction information Either the tracing section updating request message or the Routing Area Update request message；

Second sending module, the switch acknowledgment message for being also used to receive or tracing section updating request disappear Breath or the Routing Area Update request message are forwarded to the target network grouping controlled entity.