CN101472326A - Method and terminal for implementing voice business switch between different systems - Google Patents
Method and terminal for implementing voice business switch between different systems Download PDFInfo
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- CN101472326A CN101472326A CNA2007103078811A CN200710307881A CN101472326A CN 101472326 A CN101472326 A CN 101472326A CN A2007103078811 A CNA2007103078811 A CN A2007103078811A CN 200710307881 A CN200710307881 A CN 200710307881A CN 101472326 A CN101472326 A CN 101472326A
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Abstract
The embodiment of the invention discloses a method for realizing voice service switching among dissimilar systems. The method comprises the following steps: before initiating domain switching for the CS domain of a circuit, a calling terminal located in a packet switching PS domain sends a session initiation protocol (SIP) registering request to IP media system (IMS); after receiving the respond of the SIP registering request returned by IMS, the calling terminal initiates the domain switching for the CS domain of the circuit. Meanwhile, the embodiment of the invention discloses a method for realizing voice service switching among the dissimilar systems. The invention ensures that the time for SIP registration is sufficient when domain switching is initiated, so as to finish subsequent vice service and cut back, and resource related to SIP in a source system is enabled not to be released because of overtime of SIP registration. Therefore, the calling terminal can obtain the information resource related to the needed PS domain when cutting back to the resource system.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method and terminal that realizes that speech business is switched between different system.
Background technology
At different network carrying mechanism, mobile communication voice business commonly used comprises: CS (CircuitService, circuit domain business) session services such as voice call of territory carrying, and PS (PacketSwitching, packet switching) Voice over IP technology (VoIP, the Voice over IP) session service of territory carrying.Wherein, described CS territory bearing technology is applied in the global system for mobile communications (UMTS, Universal Mobile Telecommunications System) or GSM EDGE Radio Access Network (GERAN) of 2G/3G network.Described PS territory bearing technology then is applied in System Architecture Evolution (SAE, System Architecture Evolution) network or Long Term Evolution (LTE, the Long Term Evolution) network.
Because the SAE/LTE network belongs to initial stage, therefore, when user terminal (UE) is set up the VoIP business in the SAE/LTE network after, possibly the VoIP business is switched in the 2G/3G network, this just needs to realize the switching of the speech business from the PS territory to the CS territory.
At present, a kind of method of switching to the speech business of CS territory from the PS territory commonly used comprises: the enhancing base station the network (eNB, Envolved NodeB) receives measurement report (Measurementreports) message that UE sends.Described eNB according to described Measurement reports message when the switching in different system CS territory is initiated from the PS territory in decision, instruction mobile management entity (MME, Mobile ManagementEntity) selects a circuit domain agent entity (CS-Proxy), and carry out the switching in the CS territory of follow-up routine by the described CS-Proxy request target B of mobile switching centre (MSC-B).
Simultaneously, described eNB also sends handoff request (Handover Request) message to described UE, to ask the territory transfer process of described UE initiation from the PS territory to the CS territory.Described UE sends call setup (Setup) message to described MME after receiving the Handover Request message that described eNB sends, ask the call setup from the PS territory to the CS territory again.
Yet in realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art:
Because in the prior art, need ensure that returning of this calling terminal cut according to the related resource of the calling terminal in the source network, but prior art is not considered session initiation protocol (SIP, Session InitiationProtocol) the overtime problem of registration timer, if and in fact the SIP registration timer is overtime, source network then can discharge all resources relevant with described calling terminal, therefore can cause this calling terminal to return when switching to source network and cut failure owing to the relevant PS territory context of nothing causes back.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of method and terminal that realizes that speech business is switched between different system, can guarantee that terminal is successfully finished from the CS territory to returning of PS territory to cut.
A kind of method that realizes that speech business is switched between different system that the embodiment of the invention provides comprises:
The calling terminal that is in packet switching PS territory is before initiating the territory conversion to circuit CS territory, to IP media system IMS initiation session initiation protocol SIP register requirement;
Described calling terminal is initiated the territory conversion to described CS territory after the response of receiving the described SIP register requirement that described IMS returns.
Based on technique scheme, the present invention also provides a kind of terminal that is used to realize speech business switching between different system, comprising:
SIP register requirement unit, be used for from the PS territory before the territory conversion is initiated in the CS territory, initiate the SIP register requirement to IMS;
Receiving element is used to receive the response of the described SIP register requirement that described IMS sends;
The territory converting unit is used for after described receiving element is received described response message, initiates the territory conversion to described CS territory.
Based on technique scheme, the present invention also provides a kind of method that realizes that speech business is switched between different system, comprising:
The calling terminal that is in the PS territory obtained the remaining time that current SIP registration was lost efficacy before initiating the territory conversion to the CS territory;
When be not less than the threshold value that presets the remaining time that described current SIP registration was lost efficacy, then initiate the territory switching motion to described CS territory.
Based on technique scheme, the present invention also provides a kind of terminal that is used to realize speech business switching between different system, comprising:
Remaining time acquiring unit, be used for from the PS territory before the territory conversion is initiated in the CS territory, obtain the remaining time that current SIP registration was lost efficacy;
The territory converting unit is used for initiating the territory conversion to described CS territory when be not less than the threshold value that presets the remaining time of described remaining time of the described current SIP registration inefficacy that the unit obtains.
The foregoing description passes through initiating from the PS territory before the conversion of the territory in CS territory, and calling terminal is initiated the SIP register flow path to the IMS system earlier; Perhaps in above-mentioned another embodiment when be not less than the threshold value that presets the remaining time that described current SIP registration was lost efficacy, initiate the territory switching motion to described CS territory.The foregoing description all is to guarantee to also have realization switching under the sufficiently long prerequisite in the time of SIP registration, like this, calling terminal is after switching to different system CS territory, resource relevant with SIP in the origin system can not be released because of the SIP registration timeout, thereby having guaranteed that described calling terminal returns can obtain the relevant information resources in required PS territory when cutting to origin system, and then realizes successfully returning cutting.
Description of drawings
Fig. 1 is a kind of schematic process flow diagram that realizes speech business changing method embodiment between different system of the present invention;
Fig. 2 returns the schematic process flow diagram of blanking method embodiment for speech business between the different system of the another kind of realization of the present invention;
Fig. 3 is a kind of structural representation block diagram that is used for speech business device for switching embodiment between different system of the present invention;
Fig. 4 is used for the structural representation block diagram of speech business device for switching embodiment between different system for another kind of the present invention;
Fig. 5 is used for the structural representation block diagram of speech business device for switching embodiment between different system for another kind of the present invention;
Fig. 6 is used for the structural representation block diagram of speech business device for switching embodiment between different system for another kind of the present invention.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the embodiment of the invention is done further and to be elaborated.
A kind of method that realizes that speech business is switched between different system that the embodiment of the invention provides, this method by calling terminal before the territory conversion that realizes from the PS territory to the CS territory, carry out the SIP register flow path earlier, thereby guarantee after calling terminal switches to different system CS territory, can be in the time in the term of validity of SIP registration, the resource relevant with SIP can be because of the SIP registration timeout be released in the origin system, thereby can complete successfully from the CS territory to returning of PS territory and cut.
As shown in Figure 1, realize the schematic process flow diagram of the method embodiment that speech business is switched between different system for the present invention is a kind of.Described method comprises:
S101: calling terminal A (UE-A) sends Measurement reports message to eNB.
S102: described eNB when decision needs initiation to switch to the CS territory of different system from the PS territory, sends Handover Required message to MME according to described Measurement reports message.
S103: described MME selects a CS-Proxy in this PLMN, and sends Forward Handover Required message to described CS-Proxy.
Wherein, described CS-Proxy one side and MME have interface, and opposite side and UMTS/GERAN CS domain core net have interface.For the user, in LTE, it is equivalent to the MSC entity, has anchor point effect (being to be connected with this node all the time in the communication process) in switching, can be to the handoff request of UMTS/GERANCS territory forwarding from the LTE network.
Need to prove, all can have the translation function of CS domain message and PS domain message, and the network entity between MSC and MME, for example: have voice interactive function (IWF, VoiceInterworking Function) network entity etc., as long as can substitute the network entity that described CS-Proxy realizes the object of the invention, be equally applicable to the present invention.
S104: described CS-Proxy is owing to be in this PLMN, therefore the sign that can self dispose is determined MSC-B, the request that described CS-Proxy will switch to the CS territory sends to described MSC-B by MAP Prepare HandoverRequest message, then carry out the territory switching flow of follow-up routine, because of follow-up flow process belongs to prior art, give unnecessary details no longer one by one at this.
S105: when described eNB determines to need to initiate to switch to the CS territory, the transmission action in carrying out described S102, also send Handover Request message in above-mentioned S102, to ask the conversion of described UE-A initiation from the PS territory to the CS territory to described UE-A.
S106: described UE-A sends SIP register requirement (SIP Registration) message to IP media system (IMS) after receiving described Handover Request message, carries out the SIP registration with request.
For example, the described UE-A specifically call service controlled function entity at the UE-A place in the IMS system (CSCF, Call Server Control Function) initiates this registration, certainly, is not limited to this.
S107: as described UE-A during in the success of described IMS system registry, described IMS sends response message 200 OK (expression is successfully registration) to described UE-A.
S108: described UE-A sends Setup message to described MME, carries out the territory transfer process.
S109: the described Setup message that described MME will receive sends to described CS-Proxy.
S110: described CS-Proxy is reserved resource in the media gateway that is connected with self (MGW, Media GateWay); And ought receive the Setup message that sends from described UE-A simultaneously, and the response that sends from described MSC-B at the Handover of MAP Prepare described in described S204 Request message, after promptly preparing handoff response (MAP Prepare Handover Response) message, send SIP conversation request (INVITE) message to described IMS system (for example CSCF at UE-A place), begin to carry out territory conversion from the PS territory to the CS territory.
S111: the described INVITE that described CSCF will receive sends to voice continuity application server (VCC AS, Voice Call Continiuty Application Server).
S112～S113: described VCC AS sends SIP conversation request (RE-INVITE) message again by described CSCF to callee UE-B, comprises user's face MGW address in this message.
S114: described UE-B sends response message 200 OK to described CSCF, and links to each other with user's face MGW of appointment according to user's face path of described user's face MGW address with described UE-B.
S115: described CSCF sends described response message 200 OK to described CS-Proxy.
S116: described CS-Proxy asks described MGW to connect user's face;
S117: after described UE-B and described MSC-B set up path, described CS-Proxy sent to switch to described MME and carries out (Handover Command) message, enters handover execution stage with expression.
S118: the described Handover Command message that described MME will receive sends to described eNB.
S119: the described Handover Command message that described eNB will receive sends to described UE-A.
S120: base station (NodeB BTS) is after finding that described UE-A has been linked into Target cell under this base station, to radio network controller (RNC, Radio Network Controller) or base station controller (BSC, Base Station Controller) send to switch survey (Handover Detect) message.
S121: described RNC/BSC sends described Handover Detect message to described MSC-B, to tell described MSC-B that described UE-A has been linked into Target cell.
S122: described MSC-B sets up described UE-A and is connected with the face of user end to end between the described UE-B.
S123: described UE-A sends to switch to described RNC/BSC and finishes (Handover Complete) message.
S124: the described Handover Complete message that described RNC/BSC will receive sends to described MSC-B, has finished switching to show described UE-A.
S125: described MSC-B when learn by the Handover Detect message among the described S121 set up being connected between described UE-A and the described UE-B after, successfully be linked into Target cell (MAP proc access sig request) message to described CS-Proxy transmission, indication UE-A successfully is linked into destination end, and notice source (being UE-A side) releasing network interface-free resources.
S126: after described MSC-B learns that the switching from the PS territory to the CS territory has been finished in by the Handover Complete message among the described S123, send end signaling request (MAPsend end sig request) message to described CS-Proxy, the indication switching is finished, and notifies all resources among the described CS-Proxy release eNB.
The foregoing description is by before initiating the territory conversion, for example described UE-A is before sending Setup message to MME, at first initiate the SIP register flow path to the IMS system, like this after UE-A switches to goal systems, the PS territory related resource of being preserved in the source network side relevant with described UE-A can not be released because of the SIP registration timeout, thereby having ensured that UE-A returns when cutting to source network can be because of can obtaining required PS territory relevant information, and realizes successfully returning cutting.
In addition, the foregoing description can also be provided with the threshold value of the remaining time of a SIP registration inefficacy in advance on described UE-A.Like this in above-mentioned S106, described UE-A is after receiving described HandoverRequest message, also can obtain the remaining time that current SIP registration was lost efficacy earlier,, send described SIP Registration message again when remaining time that described current SIP registration was lost efficacy during less than the threshold value that presets.Wherein, described threshold value can be determined that its value can be arbitrary value by operator.
In addition, described UE-A obtains when be not less than the threshold value that presets the remaining time that current SIP registration was lost efficacy, and then described UE-A can not initiate SIP register requirement flow process to IMS, but directly initiates the territory flow path switch to described CS territory.For example, in above-mentioned embodiment shown in Figure 1, in described S106, after described UE-A is receiving described Handover Request message, when be not less than the threshold value that presets the remaining time that the current SIP registration of obtaining was lost efficacy, then directly carry out described S108 and subsequent action.
In addition, in the S106 of the foregoing description, in the SIP Registration message that described UE-A sends, can also comprise the change SIP registration indication information of effective time, for example, comprise that in described SIPRegistration message change SIP registers the indication information that be infinitely great (as infinite) effective time, like this, the time that can guarantee the SIP registration is for forever effective.
In addition, in above-mentioned S103, described MME also can send to described CS-Proxy by described Forward Handover Required message with the PS territory contextual information of the UE-A that preserved.Wherein, the contextual information in described PS territory can comprise: the parameter information that mobile management (MM, Mobility Management) context and packet data protocol (PDP, Packet Data Protocol) use when context etc. is used for back cutting.
Simultaneously, described CS-Proxy in described S104, also extracts described PS territory contextual information and preservation from this message after receiving described Forward Handover Required message.So that cut in the process in follow-up returning, when described CS-Proxy transmits when preparing handoff request (Forward Prepare Handover Request) message sending to described MME, described MME the described PS territory contextual information of preserving extracted and sends to described MME together, so that can successfully switch go back to the PS territory from the CS territory according to described PS territory contextual information in company with described Forward Prepare Handover Request message.
Below in conjunction with description of drawings once, the concrete application of using technical solution of the present invention cutting in the process for whole time.As shown in Figure 2, for the schematic process flow diagram of blanking method embodiment is returned in speech business between a kind of different system of the present invention, the prerequisite of this method is: when switching to different system, in carrying out above-mentioned S103 in embodiment illustrated in fig. 1, described MME sends to described CS-Proxy with the contextual information in the PS territory of described UE-A by described CSHandover Required message.Described CS-Proxy preserves the described PS territory context in the described CS Handover Required message of receiving in above-mentioned S104.This method comprises:
S201: described UE-A sends Measurementreports message by described NodeB/BTS to RNC/BSC, whether RNC/BSC goes back to the PS territory that switches to IMS/LTE according to described Measurement reports message decision, and when decision is switched, carry out following flow process.
S202: described RNC/BSC sends Handover Required message to described MSC-B, goes back to the PS territory that switches to origin system from the CS territory to require to carry out.
S203: be similar to the switching between MSC, described MSC-B sends MAP PrepareHandover Request message to CS-Proxy.
S204: described CS-Proxy selects a MME, and the PS territory contextual information that will be preserved in above-mentioned S104 embodiment illustrated in fig. 1 extracts, join in the Forward Prepare HandoverRequest message, and described Forward Prepare Handover Request message is sent to described MME.
S205: described MME gets access to PS territory contextual information from described Forward Prepare Handover Request message after, beginning is carried out follow-up returning according to described PS territory contextual information and is cut, and this moment, described MME sent Handover Request message to eNB.
S206: described eNB reserves required interface-free resources, and returns handoff request to described MME and reply (Handover Request Ack) message.
S207: described MME sends to transmit to described CS-Proxy and prepares handoff response (ForwardPrepare Handover Response) message.
S208: described CS-Proxy sends Forward Prepare HandoverResponse message to described MSC-B.
S209: described MSC-B sends Handover Command message to source RNC/BSC.
S210: described source RNC/BSC sends described Handover Command message to described UE-A.
S211: described UE-A changes the wireless access technology (RAT, Radio AccessTechnology) at place, is linked into the E-UTRAN sub-district, and carries out synchronously.
S212: described eNB sends Handover Detect message to described MME after learning that described UE-A has inserted the sub-district of being responsible for.
S213: described MME sends to described CS-Proxy with described Handover Detect message, to tell described CS-Proxy that described UE-A has been linked into the sub-district of being responsible for.
S214: described UE-A sends Handover Complete message to described MME.
S215: described MME sends described Handover Complelte message to described CS-Proxy, has finished switching to show described UE-A.
S216: described CS-Proxy is after learning that by the Handover Detect message among the described S213 described UE-A successfully is linked into the sub-district of being responsible for, send MAP proc accesssig req message to described MSC-B, indication UE-A successfully is linked into the sub-district of appointment, and notifies described MSC-B releasing network interface-free resources.
S217: described CS-Proxy is after learning that by the Handover Complelte message among the described S215 switching from the CS territory to the PS territory has been finished, send MAP send end sigrequest message to described MSC-B, the indication switching is finished, and notifies described MSC-B to discharge all shared resources of described UE-A.
In the foregoing description because on the basis of embodiment shown in Figure 1, in carrying out described S204, give described MME with the PS territory contextual information of being preserved among the S104 embodiment illustrated in fig. 1 by Forward PrepareHandover Request message informing, so that returning when cutting, described MME can in time get access to back and cut required PS territory contextual information, thereby ensures back the success of cutting.
Based on technique scheme, the embodiment of the invention also provides a kind of terminal that is used to realize that speech business is switched between different system, this terminal can from the PS territory before the territory conversion is initiated in the CS territory, at first initiate the SIP register requirement to described IMS.As shown in Figure 3, be used to realize the structural representation block diagram of the terminal embodiment of speech business switching between different system for the present invention is a kind of, described terminal comprises: SIP register requirement unit 301, receiving element 302, territory converting unit 303, wherein,
Described SIP register requirement unit 301, be used for from the PS territory before the territory conversion is initiated in the CS territory of different system, initiate the SIP register requirement to IMS; Particularly, after the Handover Request message that the eNB of for example described SIP register requirement unit 301 in receiving the place system sends, carry out described initiation SIP register requirement function by send SIP Registration message to IMS.Wherein, can be specifically in IMS the CSCF at this terminal place initiate this SIP Registration message, certainly, be not limited to this.
Described IMS carries out authentication registration to described terminal, and when succeeding in registration, then described IMS is to the response message of described terminal transmission about described SIP register requirement.At this moment, the receiving element 302 of described terminal is used to receive the response message about described SIP register requirement that described IMS sends, and as 200 OK response messages, succeeds in registration with expression.
Described territory converting unit 303 is used for after described receiving element 302 is received described response message, initiates from the PS territory to the territory conversion in described CS territory to described CS territory.Wherein, described territory converting unit 303 can be initiated the territory transfer process by sending Setup message to MME.The detailed process of described territory conversion is identical with the flow process among the above-mentioned method embodiment shown in Figure 1, gives unnecessary details no longer one by one at this.
The described SIP register requirement of the foregoing description unit 301 is by before initiating the territory conversion, at first initiate the SIP registration to the IMS system, like this after terminal switches to goal systems, the PS territory related resource of preserving at the network side of origin system relevant with described terminal can not be released because of the SIP registration timeout, thereby having ensured that this terminal is returned when cutting to origin system can be because of can obtaining required PS territory relevant information, and realizes successfully returning cutting.
In addition, on the basis of above-mentioned device embodiment shown in Figure 3, described terminal can also be initiated the SIP registration according to deciding the remaining time that the SIP registration was lost efficacy, as shown in Figure 4, the structural representation block diagram that is used to realize the terminal embodiment of speech business switching between different system for another kind of the present invention, described terminal is on the basis of above-mentioned terminal embodiment shown in Figure 3, and described terminal also comprises:
In addition, the invention also discloses the terminal embodiment that another kind is used to realize that speech business is switched between different system, this terminal is on the basis of above-mentioned terminal embodiment shown in Figure 4, in the SIP Registration message that sends, also can comprise the change SIP registration indication information of effective time, so that make SIP registration timer invalid, promptly current SIP registration is effectively permanent, can guarantee that like this PA territory related resource of described terminal can not discharge because of SIP registers to lose efficacy.
As shown in Figure 5, for another kind of the present invention is used to realize the structural representation block diagram of the terminal embodiment that speech business is switched between different system, described terminal is on the basis of above-mentioned device embodiment shown in Figure 4, and described SIP register requirement unit 301 further comprises:
Time indication acquiring unit 3011 is used to obtain the change SIP registration indication information of effective time; SIP login request message unit 3012 is used for indicating the change SIP of acquiring unit 3011 to register the indication information of effective time the described time and joins in the SIP login request message, and sends by the transmitting element 3013 of this terminal.For example, add change SIP and register the indication information that be infinitely great (as infinite) effective time in described SIP Registration message, like this, the time that can guarantee the SIP registration is for permanent effective.So that after terminal switches to goal systems, the PS territory related resource of being preserved in the source network side relevant with described terminal can not be released because of the SIP registration timeout, thereby having ensured that this terminal is returned when cutting to source network can be because of can obtaining required PS territory relevant information, and realizes successfully returning cutting.
Need to prove that the described SIP register requirement unit 301 among the device embodiment shown in Figure 5 can also be applied among the device embodiment of device embodiment shown in Figure 3 and other equivalents except can be applicable among the device embodiment shown in Figure 4.
In addition, the embodiment of the invention also discloses a kind of terminal that is used to realize speech business switching between different system, this embodiment can set in advance the threshold value of the remaining time of a SIP registration inefficacy, be used for this terminal and initiating from the PS territory when change in the CS territory, can determine whether initiating the CS territory according to the remaining time that the current SIP registration of terminal was lost efficacy and initiate the territory conversion.As shown in Figure 6, for another kind of the present invention is used to realize the structural representation block diagram of the terminal embodiment that speech business is switched between different system, described terminal comprises: remaining time acquiring unit 601, territory converting unit 602, wherein,
Described remaining time, acquiring unit 601, be used for from the PS territory before the territory conversion is initiated in the CS territory, obtain the remaining time that the current SIP registration of terminal was lost efficacy;
Described territory converting unit 602, be used for when described remaining time acquiring unit 601 acquire when remaining time that described current SIP registration lost efficacy being not less than the threshold value that presets, initiate from the PS territory to the territory conversion in described CS territory to described CS territory.Wherein, described territory converting unit 602 can be initiated the territory transfer process by sending Setup message to MME.The detailed process of described territory conversion is similar to the flow process among the above-mentioned method embodiment shown in Figure 1, gives unnecessary details no longer one by one at this.
Wherein, described threshold value can be provided with by operator, can be set to arbitrary value according to actual conditions.Described threshold value can directly be provided with preservation on described terminal, perhaps can also be provided with to be kept on other network entities.
The described territory of the foregoing description converting unit 602 is before initiating the territory conversion, carry out the territory conversion by determining whether triggering described territory converting unit 602 remaining time that described remaining time, acquiring unit 601 lost efficacy according to the current SIP registration of described terminal, make after terminal switches to goal systems, time enough can be arranged, thereby guarantee can not be released because of the SIP registration timeout at the PS territory related resource relevant that the network side of origin system is preserved with described terminal, thereby having ensured that this terminal is returned when cutting to origin system can be because of can obtaining required PS territory relevant information, and realizes successfully returning cutting.
Device embodiment described above only is schematic, wherein said unit as the separating component explanation can or can not be physically to separate also, the parts that show as the unit can be or can not be physical locations also, promptly can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of module to realize the purpose of present embodiment scheme according to the actual needs.Those of ordinary skills promptly can understand and implement under the situation of not paying performing creative labour.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
Above-described embodiment of the present invention does not constitute the qualification to protection range of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1, a kind of method that realizes that speech business is switched between different system is characterized in that, comprising:
The calling terminal that is in packet switching PS territory is before initiating the territory conversion to circuit CS territory, to IP media system IMS initiation session initiation protocol SIP register requirement;
Described calling terminal is initiated the territory conversion to described CS territory after the response of receiving the described SIP register requirement that described IMS returns.
2, the method that speech business is switched between the different system of realization as claimed in claim 1 is characterized in that,
When remaining time that current SIP registration was lost efficacy during, then carry out described initiations SIP register requirement and move less than the threshold value that presets.
3, the method that speech business is switched between the different system of realization as claimed in claim 1 or 2 is characterized in that, initiates the SIP register requirement to IMS and comprises:
Call service controlled function entity to described IMS sends the SIP login request message.
4, the method that speech business is switched between the different system of realization as claimed in claim 3 is characterized in that described SIP login request message comprises: change SIP registers the indication information of effective time.
5, the method that speech business is switched between the different system of realization as claimed in claim 1 is characterized in that, before the described SIP registration of initiation was asked, described method also comprised:
Mobile management entity MME requires message to send to circuit domain agent entity CS-Proxy by transmitting to switch the PS territory contextual information of being preserved;
Described CS-Proxy preserves the forwarding of being received and switches the described PS territory contextual information that requires in the message.
6, the method that speech business is switched between the different system of realization as claimed in claim 5 is characterized in that returning the process that switches to described PS territory from described CS territory, described method also comprises:
Described CS-Proxy sends to described MME with the PS territory contextual information of being preserved by transmitting preparation handoff request message, so that described MME can cut according to returning of described PS territory contextual information realization foreign lands.
7, a kind of terminal that is used to realize speech business switching between different system is characterized in that, comprising:
SIP register requirement unit, be used for from the PS territory before the territory conversion is initiated in the CS territory, initiate the SIP register requirement to IMS;
Receiving element is used to receive the response of the described SIP register requirement that described IMS sends;
The territory converting unit is used for after described receiving element is received described response message, initiates the territory conversion to described CS territory.
8, the terminal that is used to realize speech business switching between different system as claimed in claim 7 is characterized in that described terminal also comprises:
The condition trigger element is used for then indicating described SIP register requirement unit to carry out described SIP register requirement function when remaining time that current SIP registration was lost efficacy during less than the threshold value that presets.
9, as claim 7 or the 8 described terminals that are used to realize speech business switching between different system, it is characterized in that described SIP register requirement unit further comprises:
Time indication acquiring unit is used to obtain the change SIP registration indication information of effective time;
SIP login request message unit is used for indicating the change SIP of acquiring unit to register the indication information of effective time the described time and joins in the SIP login request message, and sends by the transmitting element of this terminal.
10, a kind of method that realizes that speech business is switched between different system is characterized in that, comprising:
The calling terminal that is in the PS territory obtained the remaining time that current SIP registration was lost efficacy before initiating the territory conversion to the CS territory;
When be not less than the threshold value that presets the remaining time that described current SIP registration was lost efficacy, then initiate the territory switching motion to described CS territory.
11, a kind of terminal that is used to realize speech business switching between different system is characterized in that, comprising:
Remaining time acquiring unit, be used for from the PS territory before the territory conversion is initiated in the CS territory, obtain the remaining time that current SIP registration was lost efficacy;
The territory converting unit is used for initiating the territory conversion to described CS territory when be not less than the threshold value that presets the remaining time of described remaining time of the described current SIP registration inefficacy that acquiring unit obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103078811A CN101472326B (en) | 2007-12-29 | 2007-12-29 | Method and terminal for implementing voice business switch between different systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007103078811A CN101472326B (en) | 2007-12-29 | 2007-12-29 | Method and terminal for implementing voice business switch between different systems |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2011047564A1 (en) * | 2009-10-21 | 2011-04-28 | 中兴通讯股份有限公司 | Method for handling users by application server and application server thereof |
| WO2011137851A1 (en) * | 2010-08-30 | 2011-11-10 | 华为技术有限公司 | Process method, device and system for reverse single radio voice call continuity |
| CN102625397A (en) * | 2011-01-31 | 2012-08-01 | 中兴通讯股份有限公司 | Handover method and system thereof |
| CN102724723A (en) * | 2011-03-30 | 2012-10-10 | 中兴通讯股份有限公司 | Switchover control method and system thereof based on IMS |
| CN103179688A (en) * | 2013-03-22 | 2013-06-26 | 北京久华信信息技术有限公司 | Method for realizing resource release of wireless communication system based on SIP (Session Initiation Protocol) |
| WO2015139298A1 (en) * | 2014-03-21 | 2015-09-24 | Qualcomm Incorporated | Security mode updates during cellular relocation to avoid call drop |
| CN102420806B (en) * | 2010-09-28 | 2016-03-30 | 中兴通讯股份有限公司 | In IMS, user is switched to the method and system of packet-switched domain from circuit commutative field |
| CN104254111B (en) * | 2010-08-30 | 2018-08-14 | 华为技术有限公司 | Processing method, equipment and the system of reverse single wireless voice calling continuity |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020025963A (en) * | 1999-07-30 | 2002-04-04 | 도날드 디. 먼둘 | Methods and systems for switching terminals from packet switched service to circuit switched service |
| CN1889756B (en) * | 2005-07-16 | 2010-05-12 | 华为技术有限公司 | Method for double-mode terminal switching between block field and circuit field |
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2007
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| WO2011047564A1 (en) * | 2009-10-21 | 2011-04-28 | 中兴通讯股份有限公司 | Method for handling users by application server and application server thereof |
| CN102387557B (en) * | 2010-08-30 | 2014-09-17 | 华为技术有限公司 | Processing method, equipment and system of reverse single wireless voice calling continuity |
| WO2011137851A1 (en) * | 2010-08-30 | 2011-11-10 | 华为技术有限公司 | Process method, device and system for reverse single radio voice call continuity |
| CN102387557A (en) * | 2010-08-30 | 2012-03-21 | 华为技术有限公司 | Processing method, equipment and system of reverse single wireless voice calling continuity |
| CN104254111B (en) * | 2010-08-30 | 2018-08-14 | 华为技术有限公司 | Processing method, equipment and the system of reverse single wireless voice calling continuity |
| US9307453B2 (en) | 2010-08-30 | 2016-04-05 | Huawei Technologies Co., Ltd. | Method, device and system for processing reverse single radio voice call continuity |
| CN102420806B (en) * | 2010-09-28 | 2016-03-30 | 中兴通讯股份有限公司 | In IMS, user is switched to the method and system of packet-switched domain from circuit commutative field |
| CN102625397A (en) * | 2011-01-31 | 2012-08-01 | 中兴通讯股份有限公司 | Handover method and system thereof |
| CN102724723A (en) * | 2011-03-30 | 2012-10-10 | 中兴通讯股份有限公司 | Switchover control method and system thereof based on IMS |
| CN102724723B (en) * | 2011-03-30 | 2017-12-15 | 中兴通讯股份有限公司 | Control switching method and system based on IMS |
| CN103179688B (en) * | 2013-03-22 | 2015-11-18 | 北京久华信信息技术有限公司 | The method of wireless communication system resource release is realized based on Session Initiation Protocol |
| CN103179688A (en) * | 2013-03-22 | 2013-06-26 | 北京久华信信息技术有限公司 | Method for realizing resource release of wireless communication system based on SIP (Session Initiation Protocol) |
| WO2015139298A1 (en) * | 2014-03-21 | 2015-09-24 | Qualcomm Incorporated | Security mode updates during cellular relocation to avoid call drop |
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