CN101374343A

CN101374343A - Method and terminal equipment for implementing business continuity

Info

Publication number: CN101374343A
Application number: CNA2007101822234A
Authority: CN
Inventors: 吴晓波; 段小琴; 张戬; 李庆禹; 谢勇
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2007-08-21
Filing date: 2007-10-09
Publication date: 2009-02-25
Anticipated expiration: 2027-10-09
Also published as: CN101374343B

Abstract

The embodiment of the invention discloses a method for realizing continuity of a speech business, which includes the following steps: when the terminal IP network moves to the next CS network, it imitates a VCC process, and switches the speech conversation based on IMS in the IP network into the CS speech conversation based on eMSC; the acquired CS speech conversation based on eMSC after the switch is switched into the CS speech conversation in the next CS network. The embodiment of the invention also provides a method for realizing IMS business continuity and a terminal device. The maintenance of the continuity of the speech conversation is realized, when the terminal moves between the network based on IP and the network based on the CS, according to the embodiment of the invention, and the maintenance of the continuity of the business is realized, when the terminal moves between the IP network A and the IP network B.

Description

A kind of method and terminal equipment of realizing business continuance

Technical field

The present invention relates to the communications field, relate in particular to a kind of method and terminal equipment of realizing business continuance.

Background technology

Universal mobile telecommunications system (UMTS, Universal Mobile Telecommunication System) is to adopt the 3-G (Generation Three mobile communication system) of WCDMA air interface technologies, also the UMTS system is called the WCDMA communication system usually.The UMTS system has adopted and the similar structure of second generation mobile communication system, it comprise Radio Access Network (RAN, Radio Access Network) and core network (CN, CoreNetwork).Wherein RAN is used to handle all and wireless function associated, and CN then is used to handle voice calls all in the UMTS system and is connected with data, and realizes the exchange and the routing function of UMTS network and external network.CN is from being divided into circuit commutative field (CS, Circuit Switched) and packet-switched domain (PS, Packet Switched) in logic.UTRAN, CN and user terminal (UE, User Equipment) have constituted whole UMTS system together.Its concrete system configuration is with reference to figure 1, and wherein, UTRAN is a land radio access web, and it comprises one or more RNSs (RNS).A RNS is made up of a radio network controller (RNC) and one or more base station (NodeB).Radio network controller (RNC) is used to control the Radio Resource of UTRAN, mainly finishes functions such as connection foundation and disconnection, switching, the merging of grand diversity, RRM control.NodeB is the base station (being radio receiving-transmitting unit) of UMTS system, comprises radio receiving-transmitting unit and Base-Band Processing parts.By the Iub interface and the RNC interconnection of standard, mainly finish the processing of Uu interface physical layer protocol.Its major function is spread spectrum, modulation, chnnel coding and despreading, demodulation, channel-decoding, and the functions such as mutual conversion of responsible baseband signal and radiofrequency signal.Interface between RNC and the CN is the Iu interface, and NodeB is connected by Iub interface with RNC.Interconnected between the radio network controller (RNC) by Iur.

The UMTS network architecture is based on the 3GPP Rel6 framework of version in the past, consider the competitiveness of future network, 3GPP is studying a kind of brand-new evolution network framework to satisfy the application demand of mobile network in 10 years futures even longer time, comprise System Architecture Evolution (SAE, System Architecture Evolution) and the Long Term Evolution (LTE of Access Network, Long Term Evolution), wherein the Access Network of evolution is called E-UTRAN.The target of network evolution is to be desirable to provide a kind of low time delay, high data rate, high power system capacity and covering, low cost, complete IP-based network.The SAE/LTE network only exists focus to cover at present, is based on the SAE/LTE network of pure IP in hot spot coverage, and is still existing 2G/3G network based on CS in the hot spot coverage outside.So, between IP-based SAE/LTE evolvement network and 2G/3G network, when mobile, how to keep the problem of continuous voice call with introducing the user based on CS.

Summary of the invention

Given this, the embodiment of the invention provides a kind of method and terminal equipment of realizing business continuance.Realized that terminal when mobile, keeps the continuity of voice conversation between IP-based network and the network based on CS, and realized that terminal when mobile, keeps the continuity of business between IP network A and IP network B.

In order to solve the problems of the technologies described above, the embodiment of the invention provides a kind of method that realizes voice business continuity, may further comprise the steps:

When terminal from IP network (described CS network is 3G CS network or 2G CS network or CDMA CS network etc.) when adjacent C S network moves, initiate continuous voice call (VCC, Voice CallContinuity) process, with described terminal in described IP network based on IP Multimedia System (IMS, IPMultimedia Subsystem) voice conversation switches to the CS voice conversation of the mobile switching centre (eMSC, Evolved Mobile Switching Center) based on evolution.

Accordingly, the embodiment of the invention provides a kind of session establishing method of realizing voice business continuity, and this method comprises:

At the voice conversation establishment stage, when terminal is in the buffer area of described IP network, produce CS voice conversation based on eMSC.

Accordingly, the embodiment of the invention provides a kind of method that realizes CSI service, and this method may further comprise the steps:

IP network is divided into buffer area and non-buffer area, described buffer area and CS network adjacency;

Terminal is initiated the IMS business by IMS;

Terminal is initiated the CS business by eMSC.

Accordingly, the embodiment of the invention provides a kind of terminal equipment, and this method comprises:

The area update unit is used to judge whether the domain identifier information that receives is identical with the domain identifier information of terminal storage, if the judgment is No, is the described domain identifier information that receives with the domain identifier information updating of storing;

Switch unit is used for initiating the VCC process when domain identifier information that described area update unit upgrades the back storage is the buffer area identification information, and described terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS in described IP network; And the described CS voice conversation based on eMSC that described switching obtains switched to CS voice conversation in the described adjacent C S network.

Accordingly, the embodiment of the invention provides a kind of terminal equipment, and this terminal equipment comprises:

The area update unit is used for when terminal is positioned at IP network, judges whether described terminal receives CS network of network identification information, if the judgment is Yes, is described buffer area identification information with the domain identifier information updating of described terminal storage;

Switch unit is used for initiating the VCC process when domain identifier information that described area update unit upgrades the back storage is the buffer area identification information, and described terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS in described IP network.

Accordingly, the embodiment of the invention provides a kind of method that realizes from the CS network to the IP network voice business continuity, and this method may further comprise the steps:

When terminal from the CS network when adjacent IP network moves, initiate the VCC process, the CS voice conversation of described terminal is switched in described IP network voice conversation based on eMSC;

Will be in described IP network switch in described IP network voice conversation based on IMS based on the voice conversation of eMSC.

Switch unit is used for initiating the VCC process when domain identifier information that described area update unit upgrades the back storage is the buffer area identification information, and the CS voice conversation of described terminal is switched in described IP network voice conversation based on eMSC.

The area update unit is used for when terminal is positioned at the CS network, judges whether described terminal receives the network identification information of IP network, if the judgment is Yes, is described buffer area identification information with the domain identifier information updating of described terminal storage;

Accordingly, the embodiment of the invention provides a kind of method of the IMS of realization business continuance, and this method may further comprise the steps:

When terminal from IP network A when IP network B moves, terminal is established to the tunnel of IP network B in IP network A, initiate the VCC process, by described tunnel the IMS business of terminal in IP network A is switched to IMS business among the IP network B.

Switch unit, when the domain identifier information that is used for storing after described area update unit upgrades is the buffer area identification information, terminal is established to the tunnel of adjacent IP network B at IP network A, terminal is established to the tunnel of IP network B in IP network A, initiate the VCC process, the IMS business of terminal in IP network A switched to IMS business among the IP network B by described tunnel.

The area update unit is used for when terminal is positioned at IP network A, judges whether described terminal receives the network identification information of IP network B, if the judgment is Yes, is the buffer area identification information with the domain identifier information updating of described terminal storage;

Switch unit, when the network identification information that is used for storing after described area update unit upgrades is the network identification information of IP network B, terminal is established to the tunnel of IP network B in IP network A, initiate the VCC process, the IMS business of terminal in IP network A switched to IMS business among the IP network B by described tunnel.

The embodiment of the invention, when terminal is mobile between IP network and CS network, perhaps terminal is between IP network when mobile, by the VCC process, and by the eMSC communication mode, realized terminal continuity of speech business and realized terminal between IP network when mobile, the continuity of speech business and non-language business when mobile between IP network and CS network.

Description of drawings

Fig. 1 is a kind of network architecture schematic diagram of the UMTS network of prior art;

Fig. 2 is that SAE/LTE network of the present invention is formed configuration diagram in conjunction with an embodiment network of GSM network;

Fig. 3 be introduce in the SAE/LTE network of the present invention the eMSC network one in network architecture schematic diagram;

Fig. 4 is a function structure schematic diagram of VCC function of the present invention;

Fig. 5 is that SAE/LTE network of the present invention is formed configuration diagram in conjunction with another embodiment network of GSM network;

Fig. 6 is that an example structure of terminal of the present invention is formed schematic diagram.

Embodiment

For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.

Continuous evolution along with network, the network architecture trends towards IP-based pure packet network fully, in the evolution process of network, progressively evolution goes out IP network such as HSPA (access of High Speed Packet Access high-speed packet), SAE/LTE and WIMAX, these IP network only exist focus to cover at present, in hot spot coverage, be based on the IP network of IMS, and be still existing 2G/3G network based on CS in the hot spot coverage outside.Therefore, when mobile, how keep the problem of continuous voice call and how to keep continuity problem professional between each IP network between introducing the user based on the IP network of IMS and 2G/3G network based on CS.

Be voice conversation continuity problem between example explanation IP network and CS network with SAE/LTE and GSM network below.

Fig. 2 is that SAE/LTE network of the present invention is formed configuration diagram in conjunction with an embodiment network of GSM network.As shown in Figure 2, SAE/LTE network focus in whole network covers the border adjacency of the border of SAE/LTE network and GSM network.The SAE/LTE network comprises buffer area 1 and non-buffer area 2, and 2 dispose the IMS networks in non-buffer area, and 1 disposes IMS network and eMSC network in the buffer area.A kind of network architecture diagram of the SAE/LTE network behind the introducing eMSC is with reference to figure 3.EMSC be a kind of in packet domain the scheme of bearer circuit numeric field data, signaling, by disposing the eMSC network, make terminal can initiate the circuit domain flow processs such as CS registration, CS calling of a simulation by eMSC at the eMSC network's coverage area.

When terminal is in non-buffer area 2, can receive the IMS network identity, therefore terminal can be at the IMS network registry, when terminal is in buffer area 1, can receive IMS network identity and eMSC network identity simultaneously, so terminal can be at the IMS network registry or at the eMSC network or simultaneously at IMS network and eMSC network registry.

The corresponding domain identifier information of the base station configuration of non-buffer area 2 (being non-buffer area identification information), and broadcast this domain identifier information, indicating terminal is in the non-buffer area 2; Accordingly, the base station of buffer area 1 also disposes corresponding domain identifier information (being the buffer area identification information), and broadcasts this domain identifier information, and indicating terminal is in the buffer area 1.In the specific implementation, other RRC message informing terminals (Cell Update Confirm cell update acknowledge message for example can also be passed through in non-buffer area 2 and buffering zone 1, Handover to UTRAN Command is to the switching command of UTRAN, Physical ChannelReconfiguration physical channel reallocation message, Radio Bearer Reconfiguration radio bearer reallocation message, Radio Bearer Release radio bearer release message, Radio Bearer Setup radio bearer is set up message, RRC Connection Setup Radio Link control connection is set up message, message such as Transport ChannelReconfiguration transmission channel reallocation message) etc. send corresponding domain identifier information to terminal.

When terminal from the SAE/LTE network when the GSM network moves, SAE/LTE network base station system can enter the buffer area, border 1 of SAE/LTE network and GSM network by above-mentioned dual mode notice UE.When terminal from the GSM network when the SAE/LTE network moves, SAE/LTE network base station system or GSM network base station system can enter the buffer area, border 1 of SAE/LTE network and GSM network by above-mentioned dual mode notice UE.

Also can be in the corresponding domain identifier information of non-buffer area 2 configurations, and the corresponding domain identifier information of 1 configuration only in the buffer area, indicating terminal is in the buffer area 1.If terminal is not received domain identifier information, then terminal can be judged it and is in non-buffer area 2, and if terminal is received domain identifier information, then terminal can be judged it and is in buffer area 1.Further also can only indicate, and 1 configuration territory does not indicate in the buffer area in 2 configuration territories, non-buffer area.Relevant device in perhaps non-buffer area 2 and the buffer area 1 does not directly send domain identifier information to terminal, but the borderline region between SAE/LTE and the GSM is set to buffer area 1, promptly be arranged in the buffer area 1 on the border of SAE/LTE network and GSM network when terminal, the GSM network can send the SAE/LTE network of network identification information (adjacent cell list that comprises described SAE/LTE network to terminal, information such as described SAE/LTE network of network frequency), the SAE/LTE network can send the CS network of network identification information (adjacent cell list that comprises described CS network to terminal, information such as described CS network of network frequency).When terminal from the SAE/LTE network when the GSM network moves, can receive CS network of network identification information, then terminal perception oneself has entered the buffer area, border 1 of SAE/LTE network and GSM network.When terminal from the GSM network when the SAE/LTE network moves, can receive SAE/LTE network of network identification information, then terminal perception oneself has entered the buffer area, border 1 of SAE/LTE network and GSM network.

When terminal is in buffer area 1, can initiate voice conversation by the eMSC network, also can initiate voice conversation, and carry out CS and IMS associating (CSI, Combination ofCS and IMS services) business by IMS and eMSC by IMS; When terminal is in non-buffer area 2, initiate speech business and non-voice service by IMS.

When terminal from the off-mode access network of starting shooting, can store receiving domain identifier information; When terminal is started shooting, domain identifier information that receives and the domain identifier information that is stored in the described terminal can be compared, if both differences, then the domain identifier information updating with storage is the described domain identifier information that receives.

Below in conjunction with the residing various states of terminal, present embodiment is described in detail.

Example 1: terminal inserts from non-buffer area 2 (only comprising the IMS network):

Because non-buffer area 2 only comprises the IMS network, then terminal is at the IMS network registry, when terminal from the off-mode access network of starting shooting, will receive non-buffer area identification information from broadcast channel, the direct buffer area identification information that receives of storage of terminal this moment;

When terminal need be set up voice conversation, initiate the voice conversation of IMS.When needs are set up the non-voice service session, initiate corresponding IMS service conversation.

When terminal 2 inner when mobile in described non-buffer area, still can receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, terminal can not upgraded the domain identifier information of storage, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, this moment, terminal still used the IMS network to enjoy speech business and non-voice service.In the specific implementation, in buffer area 1, terminal can receive the network identification information that adjacent C S network sends, if terminal receives adjacent C S network of network identification information, show that then terminal is arranged in buffer area 1, terminal is the buffer area identification information with the domain identifier information updating of storage.Herein, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then terminal can be not the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, this moment, terminal still used the IMS network to enjoy speech business and non-voice service.When terminal when non-buffer area 2 moves to buffer area 1, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be the buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, terminal finds that oneself moves into buffer area 1 from non-buffer area 2, terminal is registered at the eMSC network, and initiation VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, the non-voice IMS business of terminal is still remained on the IMS network.

How to initiate the VCC process about terminal terminal is switched to CS voice conversation based on eMSC based on the IMS voice conversation, please refer to Fig. 4, as shown in Figure 4, terminal UE A and UEB carry out voice call, and this system can realize that terminal UE A switches based on the IMS voice conversation with based on the VCC between the CS voice conversation of eMSC.When UEA is in the IMS network, initiate voice conversation by IMS, this IMS voice conversation is anchored at described voice continuity application server (VCC AS, Voice Call ContinuityApplication Server) on, when UEA when IMS moves to the eMSC network, UEA initiates the CS voice conversation by eMSC, this CS voice conversation also can be anchored on the described VCC AS, after this CS voice conversation is set up, cut off the IMS voice conversation between described UEA and described VCC AS, realize that terminal UE A switches based on the IMS voice conversation with based on the VCC between the CS voice conversation of eMSC.Accordingly, when UEA is in the eMSC network, initiate the CS voice conversation by eMSC, the CS voice conversation of this eMSC is anchored on the described voice continuity application server VCC AS, when UEA when the eMSC network moves to the IMS network, UEA initiates voice conversation by IMS, this IMS voice conversation also can be anchored on the described VCC AS, after this IMS voice conversation is set up, cut off the eMSC voice conversation between described UEA and described VCC AS, realize that terminal UE A switches based on the IMS voice conversation with based on the VCC between the CS voice conversation of eMSC.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, this moment, terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, terminal finds that oneself moves into buffer area 1 from non-buffer area 2, terminal is registered at the eMSC network, and initiation VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, the non-voice IMS business of terminal is still remained on the IMS network.

When terminal 1 inner when mobile in described buffer area, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.At this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, then the voice conversation of terminal still remains on the eMSC network, and the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then this moment, terminal can still remain the buffer area identification information with the domain identifier information of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal still is positioned at buffer area 1, then the voice conversation of terminal still remains on the eMSC network, and the non-voice IMS business of terminal is still remained on the IMS network.

When terminal comes back to non-buffer area 2 from described buffer area 1, terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2 simultaneously, terminal finds that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then this moment, terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.

When terminal moves to described GSM network from cushioning zone 1,, terminal is switched to the CS voice conversation of GSM network based on the CS voice conversation of eMSC by the switching between the CS session.

When terminal when described GSM network moves to described buffer area 1, by taking over seamlessly between the CS session, terminal is switched to CS voice conversation based on eMSC at the CS of GSM network voice conversation, if terminal continues to move to described non-buffer area 2 from described buffer area 1, then will transfer to CS voice conversation based on the CS voice conversation of eMSC based on the IMS network by the VCC process.When terminal continues to move to non-buffer area 2 from cushioning zone 1, to transfer to handling process based on the CS voice conversation of eMSC by the VCC process based on the reference of the CS voice conversation of IMS network above-mentioned " when terminal comes back to non-buffer area 2 from described buffer area 1 ", specific as follows described: terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2 simultaneously, terminal finds that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives the network identification information of IP network, judged result herein is for denying, then this moment, terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.

Example 2: terminal inserts (non-buffer area 2 only comprises the IMS network) from cushioning zone 1:

Though non-buffer area 2 only comprises the IMS network, buffer area 1 comprises eMSC, also comprises the IMS network, so terminal can be at the eMSC network registry, and also can be at the IMS network registry.When terminal from the off-mode access network of starting shooting, will receive the buffer area identification information from broadcast channel, the direct buffer area identification information that receives of storage of terminal this moment;

When terminal is set up voice conversation, can initiate the CS voice conversation by the eMSC network, also can initiate voice conversation by the IMS network.In the specific implementation, when setting up voice conversation when terminal is initiated voice conversation and is set up the IMS voice conversation by the IMS network after, can further initiate the VCC standard procedure, described voice conversation based on IMS is switched to CS voice conversation based on eMSC, to guarantee that when the buffer area, terminal is carried out voice conversation by the eMSC network.When needs are set up the non-voice service session, initiate corresponding IMS service conversation.

When terminal 1 inner when mobile in the buffer area, still can receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is arranged in buffer area 1, the voice conversation of finding oneself when terminal then remains on voice conversation described eMSC network at the eMSC network, and non-voice IMS service conversation is remained on the IMS network; When terminal is found own voice conversation at the IMS network, initiation VCC process switches to CS voice conversation based on eMSC with terminal based on the voice conversation of IMS, and the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then this moment, terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, the voice conversation of finding oneself when terminal is at the eMSC network, then voice conversation is remained on described eMSC network, the IMS service conversation is remained on the IMS network; When terminal is found own voice conversation at the IMS network, initiation VCC process switches to CS voice conversation based on eMSC with terminal based on the voice conversation of IMS, and the non-voice IMS business of terminal is still remained on the IMS network.

When terminal moves to non-buffer area 2 from cushioning zone 1, terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can confirm that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2 simultaneously, this moment, terminal found that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, and the IMS business of terminal still remains on the IMS network; The voice conversation of finding oneself when terminal then remains on voice conversation the IMS voice conversation at the IMS network, and other IMS business of terminal are still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then this moment, terminal can be a non-buffer area identification information with the domain identifier information updating of storage, can confirm that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, this moment, terminal found that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, and the IMS business of terminal still remains on the IMS network; The voice conversation of finding oneself when terminal then remains on voice conversation the IMS voice conversation at the IMS network, and the non-voice IMS business of terminal is still remained on the IMS network.

When terminal 2 inner when mobile in described non-buffer area, terminal still can receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, then the voice conversation with terminal remains on the IMS network, and the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, then the voice conversation with terminal remains on the IMS network, and the non-voice IMS business of terminal is still remained on the IMS network.

When terminal when described non-buffer area 2 comes back to buffer area 1, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be the buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1 simultaneously, terminal finds that oneself moves into buffer area 1 from non-buffer area 2, the voice conversation of finding oneself when terminal is at the IMS network, initiate the VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, terminal finds that oneself moves into buffer area 1 from non-buffer area 2, the voice conversation of finding oneself when terminal is at the IMS network, initiate the VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, the non-voice IMS business of terminal is still remained on the IMS network.

When terminal moves to described GSM network from cushioning zone 1,, terminal is switched to the CS voice conversation of GSM network based on the CS voice conversation of eMSC by taking over seamlessly between the CS session.

When terminal when described GSM network moves to described buffer area 1, by taking over seamlessly between the CS session, terminal is switched to CS voice conversation based on eMSC at the CS of GSM network voice conversation.When the terminal continuation is moved to buffer area 2 from cushioning zone 1, to transfer to handling process based on the CS voice conversation of eMSC by the VCC process based on the reference of the CS voice conversation of IMS network above-mentioned " when terminal comes back to non-buffer area 2 from described buffer area 1 ", specific as follows described: terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2 simultaneously, terminal finds that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives the network identification information of IP network, judged result herein is for denying, then this moment, terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, the voice conversation of finding oneself when terminal is during at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the non-voice IMS business of terminal is still remained on the IMS network.

Fig. 5 is that SAE/LTE network of the present invention is formed configuration diagram in conjunction with another embodiment network of GSM network.As shown in Figure 5, SAE/LTE network focus in whole network covers the edges abut of the edge of SAE/LTE network and GSM network.The SAE/LTE network comprises buffer area 1 and non-buffer area 2, and the embodiment difference shown in present embodiment and Fig. 2 is, 1 all disposes IMS network and eMSC network in non-buffer area 2 with in the buffer area.

When terminal is in buffer area 1 and non-buffer area 2, can receive IMS network identity and eMSC network identity simultaneously, so terminal can be at the IMS network registry or at the eMSC network or simultaneously at IMS network and eMSC network registry.

The corresponding domain identifier information of the base station configuration of non-buffer area 2 (non-buffer area identification information), and broadcast this domain identifier information, indicating terminal is in the non-buffer area 2; Accordingly, the base station of buffer area 1 also disposes corresponding domain identifier information (buffer area identification information), and broadcasts this domain identifier information, and indicating terminal is in the buffer area 1.Also can be in the corresponding domain identifier information of non-buffer area 2 configurations, and the corresponding domain identifier information of 1 configuration only in the buffer area, indicating terminal is in the buffer area 1.In the specific implementation, other RRC message informing terminals (Cell UpdateConfirm cell update acknowledge message for example can also be passed through in non-buffer area 2 and buffering zone 1, Handover to UTRAN Command is to the switching command of UTRAN, Physical Channel Reconfiguration physical channel reallocation message, Radio BearerReconfiguration radio bearer reallocation message, Radio Bearer Release radio bearer release message, Radio Bearer Setup radio bearer is set up message, RRC Connection Setup Radio Link control connection is set up message, message such as Transport Channel Reconfiguration transmission channel reallocation message) etc. send corresponding domain identifier information to terminal.

Also can be in the corresponding domain identifier information of non-buffer area 2 configurations, and the corresponding domain identifier information of 1 configuration only in the buffer area, indicating terminal is in the buffer area 1.If terminal is not received domain identifier information, then terminal can be judged it and is in non-buffer area 2, and if terminal is received domain identifier information, then terminal can be judged it and is in buffer area 1.Further also can only indicate, and 1 configuration territory does not indicate in the buffer area in 2 configuration territories, non-buffer area.Relevant device in perhaps non-buffer area 2 and the buffer area 1 does not directly send domain identifier information to terminal, but the borderline region between SAE/LTE and the GSM is set to buffer area 1, promptly be arranged in the buffer area 1 on the border of SAE/LTE network and GSM network when terminal, the SAE/LTE network can send the network identification information of IP network to terminal, the GSM network can send the CS network of network identification information (adjacent cell list that comprises described CS network to terminal, at least a in the described CS network of network frequency point information), when terminal from the SAE/LTE network during to the GSM network, can receive CS network of network identification information, then terminal perception oneself has entered the buffer area, border 1 of SAE/LTE network and GSM network, when terminal from the GSM network when the SAE/LTE network moves, can receive the network identification information of IP network, then terminal perception oneself has entered the buffer area, border 1 of SAE/LTE network and GSM network.

When terminal is in buffer area 1 and non-buffer area 2, can initiate voice conversation by the eMSC network, also can initiate voice conversation, and can carry out CS and IMS consolidated traffic (CSI, Combination of CS and IMS Services) by IMS and eMSC by IMS; When terminal from the off-mode access network of starting shooting, can store receiving domain identifier information; When terminal is started shooting, domain identifier information that receives and the domain identifier information that is stored in the described terminal can be compared, if both differences, then the domain identifier information updating with storage is the described domain identifier information that receives.

Example 3: terminal is (non-buffer area 2 is disposed IMS and eMSC network simultaneously) access from non-buffer area 2:

Terminal can be at the IMS network registry, also can be at the eMSC network registry.When terminal from the off-mode access network of starting shooting, will receive non-buffer area identification information from broadcast channel, the direct non-buffer area identification information that receives of storage of terminal this moment;

When terminal need be set up voice conversation, can initiate the voice conversation of IMS; Also can initiate the eMSC voice conversation.When needs are set up other service conversations, initiate corresponding IMS service conversation.

When terminal 2 inner when mobile in described non-buffer area, still can receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, find own voice conversation based on the IMS network when terminal, then terminal can still be used enjoyment speech business of IMS network and non-voice service; The voice conversation of finding oneself when terminal is at the eMSC network, and then the voice conversation with terminal remains on the eMSC network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then terminal can be not the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, find own voice conversation based on the IMS network when terminal, then terminal can still be used enjoyment speech business of IMS network and non-voice service; The voice conversation of finding oneself when terminal is at the eMSC network, and then the voice conversation with terminal remains on the eMSC network.

When terminal when non-buffer area 2 moves to buffer area 1, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be the buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1 simultaneously, this moment, terminal found that oneself moves into buffer area 1 from non-buffer area 2, terminal is registered at the eMSC network, and initiation VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, still remain on the IMS network for other IMS business of terminal.The voice of finding oneself when terminal are based on the eMSC network, and the voice conversation of terminal is remained on described eMSC network, and other IMS business of terminal are still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in buffer area 1, this moment, terminal found that oneself moves into buffer area 1 from non-buffer area 2, terminal is registered at the eMSC network, and initiation VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, still remain on the IMS network for other IMS business of terminal.The voice of finding oneself when terminal are based on the eMSC network, and the voice conversation of terminal is remained on described eMSC network, and other IMS business of terminal are still remained on the IMS network.

When terminal 1 inner when mobile in described buffer area, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, then the voice conversation of terminal still remains on the eMSC network, and the non-voice IMS business of terminal still remains on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in buffer area 1, then the voice conversation of terminal still remains on the eMSC network, and the non-voice IMS business of terminal still remains on the IMS network.

When terminal comes back to non-buffer area 2 from described buffer area 1, terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2 simultaneously, this moment, terminal found that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is at the eMSC network, the voice conversation of terminal is remained on the eMSC network, other IMS business of terminal are still remained on the IMS network, perhaps described voice conversation is switched to the IMS network; The voice conversation of finding oneself when terminal is at the IMS network, and the voice conversation of terminal is remained on described IMS network, and the non-voice IMS business of terminal is still remained on the IMS network, perhaps described voice conversation switched to the eMSC network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, the voice conversation of finding oneself when terminal is at the eMSC network, the voice conversation of terminal is remained on the eMSC network, other IMS business of terminal are still remained on the IMS network, perhaps described voice conversation is switched to the IMS network; The voice conversation of finding oneself when terminal is at the IMS network, and the voice conversation of terminal is remained on described IMS network, and the non-voice IMS business of terminal is still remained on the IMS network, perhaps described voice conversation switched to the eMSC network.

Example 4: terminal inserts from cushioning zone (non-buffer area is disposed IMS and eMSC network simultaneously):

Terminal can be at the eMSC network registry, also can be at the IMS network registry.When terminal from the off-mode access network of starting shooting, will receive the buffer area identification information from broadcast channel, the direct buffer area identification information that receives of storage of terminal this moment;

When terminal is set up voice conversation, can initiate the CS voice conversation by the eMSC network, also can initiate voice conversation by the IMS network.In the specific implementation, when setting up voice conversation when terminal is initiated voice conversation and is set up the IMS voice conversation by the IMS network after, can further initiate the VCC standard procedure, described voice conversation based on IMS is switched to CS voice conversation based on eMSC, to guarantee that in non-buffer area, terminal is carried out voice conversation by the eMSC network.When needs are set up other service conversations, initiate corresponding IMS service conversation.

When terminal 1 inner when mobile in the buffer area, still can receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1, the voice conversation of finding oneself when terminal is at the eMSC network, and then the voice conversation with terminal remains on described eMSC network, and the IMS business of terminal is remained on the IMS network; When terminal is found own voice conversation at the IMS network, initiation VCC process switches to CS voice conversation based on eMSC with terminal based on the voice conversation of IMS, and the non-voice IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in buffer area 1, the voice conversation of finding oneself when terminal is at the eMSC network, then the voice conversation with terminal remains on described eMSC network, and the IMS business of terminal is remained on the IMS network; When terminal is found own voice conversation at the IMS network, initiation VCC process switches to CS voice conversation based on eMSC with terminal based on the voice conversation of IMS, and the non-voice IMS business of terminal is still remained on the IMS network.

When terminal moves to non-buffer area 2 from cushioning zone 1, terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 2 simultaneously, this moment, terminal found that oneself moves into non-buffer area 2 from cushioning zone 1, the voice conversation of finding oneself when terminal is at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the IMS business of terminal is still remained on the IMS network, perhaps described voice conversation is still remained on the eMSC territory; The voice conversation of finding oneself when terminal is at the IMS network, and the voice conversation of terminal is remained on described IMS network, perhaps described voice conversation switched to the eMSC territory.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, the voice conversation of finding oneself when terminal is at the eMSC network, initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the IMS business of terminal is still remained on the IMS network, perhaps described voice conversation is still remained on the eMSC territory; The voice conversation of finding oneself when terminal is at the IMS network, and the voice conversation of terminal is remained on described IMS network, perhaps described voice conversation switched to the eMSC territory.

When terminal 2 inner when mobile in described non-buffer area, terminal still can receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.Can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area 2, the voice conversation of finding oneself when terminal is based on the IMS network, then terminal can still use the IMS network to enjoy speech business and non-voice service, perhaps described voice conversation is switched to the eMSC territory; The voice conversation of finding oneself when terminal is at the eMSC network, then the voice conversation with terminal remains on the eMSC network, the IMS business of terminal is still remained on the IMS network, perhaps initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for denying, then terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area 2, terminal finds that the voice conversation of oneself is based on the IMS network, then terminal can still use the IMS network to enjoy speech business and non-voice service, perhaps described voice conversation is transferred to the eMSC territory; The voice conversation of finding oneself when terminal is at the eMSC network, then the voice conversation with terminal remains on the eMSC network, the IMS business of terminal is still remained on the IMS network, perhaps initiate the VCC process, terminal is switched to voice conversation based on IMS based on the CS voice conversation of eMSC, the IMS business of terminal is still remained on the IMS network.

When terminal when described non-buffer area 2 comes back to buffer area 1, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be the buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at buffer area 1 simultaneously, this moment, terminal found that oneself moves into buffer area 1 from non-buffer area 2, the voice conversation of finding oneself when terminal is at the IMS network, initiate the VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, other IMS business of terminal are still remained on the IMS network, the voice conversation of finding oneself when terminal is at the eMSC network, then the voice conversation with terminal remains on the eMSC network, and the IMS business of terminal is still remained on the IMS network.In the specific implementation, can judge also whether terminal receives CS network of network identification information, judged result herein is for being, then terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in buffer area 1, the voice conversation of finding oneself when terminal is at the IMS network, initiate the VCC process, terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS, other IMS business of terminal are still remained on the IMS network, the voice conversation of finding oneself when terminal is at the eMSC network, then the voice conversation with terminal remains on the eMSC network, and the IMS business of terminal is still remained on the IMS network.

Above-mentioned voice conversation can be the caller session that terminal is initiated, and also can be the called session of terminal when called.

When IP network is WIMAX or HRPD/UMB network, keep these two networks to based on the mode of the voice continuity between the 3G network of CS network to keep the SAE/LTE network similar to the voice continuity of GSM network, this repeated description not again.

Accordingly, the embodiment of the invention provides a kind of method of the IMS of realization business continuance, by the VCC process, and by the eMSC communication mode, has realized terminal between IP network when mobile, the continuity of the non-language business of IMS speech business and IMS.

Be that example describes with SAE/LTE network and WIMAX network below.Suppose that the SAE/LTE network is divided into non-buffer area, buffer area, the buffer area is the borderline region of SAE/LTE network and WIMAX network, buffer area and WIMAX are adjacent, the corresponding domain identifier information of the base station configuration of non-buffer area (being non-buffer area identification information), and broadcast this domain identifier information, indicating terminal is in the non-buffer area; Accordingly, the base station of buffer area also disposes corresponding domain identifier information (being the buffer area identification information), and broadcasts this domain identifier information, and indicating terminal is in the buffer area.In the specific implementation, other RRC message informing terminals (Cell Update Confirm cell update acknowledge message for example can also be passed through in non-buffer area and buffering zone, Handover to UTRAN Command is to the switching command of UTRAN, Physical ChannelReconfiguration physical channel reallocation message, Radio Bearer Reconfiguration radio bearer reallocation message, Radio Bearer Release radio bearer release message, Radio Bearer Setup radio bearer is set up message, RRC Connection Setup Radio Link control connection is set up message, message such as Transport ChannelReconfiguration transmission channel reallocation message) etc. send corresponding domain identifier information to terminal.

Also can not dispose corresponding domain identifier information in non-buffer area, and only dispose corresponding domain identifier information in the buffer area, indicating terminal is in the buffering area.If terminal is not received domain identifier information, then terminal can be judged it and is in non-buffer area, and if terminal is received domain identifier information, then terminal can be judged it and is in the buffer area.Further also can only indicate, and not indicate in configuration territory, buffer area in configuration territory, non-buffer area.Relevant device in perhaps non-buffer area and the buffer area does not directly send domain identifier information to terminal, but the borderline region between SAE/LTE and the WIMAX is set to buffer area 1, promptly be arranged in the buffer area on the border of SAE/LTE network and WIMAX network when terminal, the SAE/LTE network can send the WIMAX network (adjacent cell list that comprises described WIMAX network to terminal, information such as described WIMAX network of network frequency) network identification information, the WIMAX network can send the SAE/LTE network of network identification information (adjacent cell list that comprises described SAE/LTE network to terminal, information such as described SAE/LTE network of network frequency).When terminal from the SAE/LTE network when the WIMAX network moves, can receive WIMAX network of network identification information, then terminal perception oneself has entered the buffer area, border of SAE/LTE network and WIMAX network.When terminal from the WIMAX network when the SAE/LTE network moves, can receive SAE/LTE network of network identification information, then terminal perception oneself has entered the buffer area, border of SAE/LTE network and WIMAX network.

When terminal is mobile between SAE/LTE network and WIMAX network, realize that the mode of IMS business continuance and terminal are between IP network and CS network when mobile, the mode that realizes voice business continuity is similar, non-buffer area with the SAE/LTE network only comprises the IMS network, the buffer area of SAE/LTE network comprises IMS network and eMSC network, and WIMAX comprises that the IMS network is that example describes.

Example 5, terminal (only comprise the IMS network) from non-buffer area and insert:

Because non-buffer area only comprises the IMS network, then terminal is at the IMS network registry, when terminal from the off-mode access network of starting shooting, will receive non-buffer area identification information from broadcast channel, the direct buffer area identification information that receives of storage of terminal this moment;

When terminal is inner mobile in described non-buffer area, still can receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, terminal can not upgraded the domain identifier information of storage, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area, this moment, terminal still used the IMS network of SAE/LTE network to enjoy speech business and non-voice service.In the specific implementation, in the buffer area, terminal can receive the second IP network identification information that adjacent WIMAX sends, if terminal receives adjacent WIMAX network of network identification information, show that then terminal is arranged in the buffer area, terminal is the buffer area identification information with the domain identifier information updating of storage.Herein, can judge also whether terminal receives WIMAX network of network identification information, judged result herein is for denying, then terminal can be not the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is in non-buffer area, this moment, terminal still used the IMS network of SAE/LTE network to enjoy speech business and non-voice service.

When terminal when non-buffer area moves to the buffer area, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be the buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at the buffer area, terminal finds that oneself moves into the buffer area from non-buffer area, terminal is established to the tunnel of the second IP network WIMAX network in the first IP network SAE/LTE network, initiate the VCC process, the IMS business of terminal in the first IP network SAE/LTE network switched to IMS business in the second IP network WIMAX network by described tunnel.In the specific implementation, can judge also whether terminal receives WIMAX network of network identification information, judged result herein is for being, this moment, terminal can be the buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at the buffer area, terminal finds that oneself moves into the buffer area from non-buffer area, terminal is established to the tunnel of the second IP network WIMAX network in the first IP network SAE/LTE network, initiate the VCC process, the IMS business of terminal in the first IP network SAE/LTE network switched to IMS business in the second IP network WIMAX network by described tunnel.

When terminal is inner mobile in described buffer area, terminal will receive the buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is identical, and terminal can not upgraded the domain identifier information of storage.At this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at the buffer area.

When terminal when described buffer area comes back to non-buffer area, terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area simultaneously, terminal finds that oneself moves into non-buffer area from cushioning the zone, the voice conversation of finding oneself when terminal is during at the second IP network WIMAX, initiate the VCC process, initiate the VCC process, the IMS business of terminal in the second IP network WIMAX network switched to IMS business in the first IP network SAE/LTE network by described tunnel.In the specific implementation, can judge also whether terminal receives WIMAX network of network identification information, judged result herein is for denying, this moment, terminal can be a non-buffer area identification information with the domain identifier information updating of storage, at this moment, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area, terminal finds that oneself moves into non-buffer area from cushioning the zone, the voice conversation of finding oneself when terminal is during at the second IP network WIMAX, initiate the VCC process, initiate the VCC process, the IMS business of terminal in the second IP network WIMAX network switched to IMS business in the first IP network SAE/LTE network by described tunnel.

When terminal moves to described WIMAX network from cushioning the zone, because terminal has been carried out following operation in the buffer area:

In the first IP network SAE/LTE network, be established to the tunnel of the second IP network WIMAX network, initiate the VCC process, the IMS business of terminal in the first IP network SAE/LTE network switched to IMS business in the second IP network WIMAX network by described tunnel.

Be that terminal has been based upon all contexts of the second IP network WIMAX network (promptly all switch relevant information) fully, so the IMS voice are switched in the real second IP network WIMAX network go by triggering switching in the second IP network WIMAX network.

When terminal when described WIMAX network moves to described buffer area, terminal is established to tunnel in the first IP network SAE/LTE network at the second IP network WIMAX network, initiate the VCC process, the IMS business of terminal in the second IP network WIMAX network switched to IMS business in the first IP network SAE/LTE network by described tunnel.When terminal continues to move to non-buffer area from cushioning the zone, with reference to above-mentioned " when terminal when described buffer area comes back to non-buffer area " handling process, specific as follows described: terminal will receive non-buffer area identification information from broadcast channel, domain identifier information by its domain identifier information that receives from broadcast channel and storage more as can be known is inequality, at this moment, terminal can be non-buffer area identification information with the domain identifier information updating of terminal storage, can determine that by the domain identifier information of judging terminal storage terminal is positioned at non-buffer area simultaneously, terminal finds that oneself moves into non-buffer area from cushioning the zone, the voice conversation of finding oneself when terminal is during at the second IP network WIMAX, initiate the VCC process, initiate the VCC process, the IMS business of terminal in the second IP network WIMAX network switched to IMS business in the first IP network SAE/LTE network by described tunnel.

In the specific implementation, except that IP network being divided into the mode of buffer area and non-buffer area, can also upgrade by base station system to IP network, find that when finding described base station terminal will switch to adjacent C S territory, described base station finds that described terminal has movable speech business simultaneously, then described base station notifies described terminal to initiate the VCC process, to transfer to CS voice conversation based on the voice conversation of IMS, further voice be switched to described adjacent C S territory by CS switching flow based on eMSC based on eMSC.

In addition, in specific implementation, can pass through TA (Tracking Area, tracing area indicates) and divide buffer area and non-buffer area.Specifically, be configured to the buffer area in the institute's IP network (SAE/LTE or other IP network) and the TA of CS circuit domain adjacent areas, other zones are non-buffer area.The corresponding territory of configuration indicates on the MME of described TA or other equipments of the core network.When terminal when TA1 enters TA2, when TA taking place upgrade, other equipment notice terminal fields in MME or the core net change.

The embodiment of the invention, when terminal from IP network when adjacent C S network moves, initiate the VCC process, described terminal is switched to the CS voice conversation of eMSC based on the voice conversation of IMS in described IP network; And with described switching obtain described based on the CS voice conversation switch to CS voice conversation in the described adjacent C S network.Realized terminal between IP-based network and network when mobile, the continuity of voice conversation based on CS.And embodiment of the invention terminal is initiated the IMS business by IMS, initiates the CS business by eMSC simultaneously, realizes CSI service.

The present invention is with SAE/LTE: dispose eMSC at SAE/LTE, the situation of simulation two-shipper continuous voice call (DualRadio VCC) realizes voice continuity from SAE/LTE to 2G/3G CS by eMSC and VCC mechanism.But the invention is not restricted to SAE/LTE, also be applicable in other IP network (for example HSPA, WIMAX, 3GPP2) and dispose similar eMSC network mechanism, simulation CS territory provides circuit domain business, the situation of analog D ual Radio, thus solve from described IP network to voice continuity problem the 2G/3G CS network.

Further, application of the present invention also is not limited to voice business continuity between IP network and the CS network, the present invention also is applicable to the business continuance between the IP network (for example HSPA, WIMAX, 3GPP2, UMB), promptly at source network by setting up the tunnel to objective network, thereby terminal can be in the function of source network simulated target network, initiate the business of based target network, thus the situation of analog D ual Radio, thus the business continuance between the solution IP network.

Accordingly, the embodiment of the invention provides a kind of terminal equipment, and Fig. 6 is that an example structure of terminal of the present invention is formed schematic diagram.As shown in Figure 6, the terminal of present embodiment comprises that registering unit 6, area update unit 7, session set up unit 8 and switch unit 9, wherein,

Described registering unit 6 is used for described terminal is registered.In the specific implementation, when terminal when broadcast channel receives network identity, terminal is registered at described network.Described network identity can be IMS network identity, eMSC network identity or CS network identity etc.

Described area update unit 7 is used to judge whether the domain identifier information that receives is identical with the domain identifier information of terminal storage, if the judgment is No, is the described domain identifier information that receives with the domain identifier information updating of storing; In the specific implementation, for realizing voice business continuity, the embodiment of the invention is divided into buffer area and non-buffer area with IP network, the corresponding domain identifier information of the base station configuration of non-buffer area (non-buffer area identification information), and broadcast this domain identifier information; Accordingly, the base station of buffer area also disposes corresponding domain identifier information (buffer area identification information), and broadcasts this domain identifier information.Also can not dispose corresponding domain identifier information in non-buffer area, and only dispose corresponding domain identifier information in the buffer area, indicating terminal is in the buffer area.When terminal from the off-mode access network of starting shooting, can store receiving domain identifier information; Started shooting and when mobile, will compare domain identifier information that receives and the domain identifier information that is stored in the described terminal in network when terminal, if both differences, then the domain identifier information updating with storage is the described domain identifier information that receives.

Switch unit 9 is used for initiating the VCC process when domain identifier information that described area update unit 7 upgrades the back storage is the buffer area identification information, and terminal is switched to CS voice conversation based on the eMSC territory based on the voice conversation of IMS.

Still with reference to figure 6, described area update unit 7 further comprises receiving element 70, judging unit 71, control unit 72 and memory cell 73, wherein,

Described receiving element 70 is used for the acceptance domain identification information;

Memory cell 73 is used to store domain identifier information;

Judging unit 71 is used to judge whether the domain identifier information that described receiving element 70 receives is identical with the domain identifier information of described memory cell 73 storages;

Upgrade control unit 72 and be used for when the negative evaluation that receives described judging unit 71 outputs as a result the time, controlling described memory cell 73 is the domain identifier information that described receiving element 70 receives with the domain identifier information updating of storing.

Above disclosed only is preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore the equivalent variations of doing according to claim of the present invention still belongs to the scope that the present invention is contained.

Claims

1. a method that realizes voice business continuity is characterized in that, may further comprise the steps:

When terminal from IP network when adjacent C S network moves, initiate the VCC process, described terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS in described IP network;

The described CS voice conversation based on eMSC that described switching is obtained switches to the CS voice conversation in the described adjacent C S network.

2. the method for realization voice business continuity as claimed in claim 1 is characterized in that, described IP network comprises IMS network and eMSC network.

3. the method for realization voice business continuity as claimed in claim 2 is characterized in that, described IP network is divided into buffer area and non-buffer area, and described buffer area and described CS network adjacency comprise described eMSC network in described buffer area;

Described when terminal from IP network when adjacent C S network moves, initiate the VCC process, with described terminal in described IP network based on the voice conversation of IMS switch to based on the step of CS voice conversation be:

When terminal from IP network when adjacent C S network moves, judge whether described terminal is in described buffer area, if the judgment is Yes, initiate the VCC process, described terminal is switched to CS voice conversation based on eMSC based on the voice conversation of IMS in described IP network.

4. the method for realization voice business continuity as claimed in claim 3 is characterized in that, described buffer area is provided with buffer area sign, and the described step of judging whether described terminal is in described buffer area is:

Whether the domain identifier information of judging described terminal storage is the buffer area identification information, if the judgment is Yes, shows that then described terminal is in described buffer area.

5. the method for realization voice business continuity as claimed in claim 4 is characterized in that, described method also comprises:

When terminal receives domain identifier information, judge whether the domain identifier information that receives is identical with the domain identifier information of storage, if the judgment is No, is the described domain identifier information that receives with the domain identifier information updating of storing.

6. the method for realization voice business continuity as claimed in claim 5 is characterized in that, described buffer area identification information is broadcasted to described terminal by the base station in the buffer area.

7. the method for realization voice business continuity as claimed in claim 5 is characterized in that, described buffer area identification information passes through RRC message informing terminal by the base station in the buffer area.

8. the method for realization voice business continuity as claimed in claim 4 is characterized in that, described method also comprises:

When terminal is positioned at IP network, judge whether described terminal receives CS network of network identification information, if the judgment is Yes, be described buffer area identification information with the domain identifier information updating of described terminal storage.

9. the method for realization voice business continuity as claimed in claim 8 is characterized in that, described CS network of network identification information comprises in the adjacent cell list of described CS network, the described CS network of network frequency point information at least a.

10. as the method for each described realization voice business continuity among the claim 1-9, it is characterized in that described voice conversation is calling session or called call session.

11. a session establishing method of realizing voice business continuity is characterized in that, comprising:

12. the session establishing method of realization voice business continuity as claimed in claim 11 is characterized in that, and is described when terminal is in the buffer area of described IP network, generation based on the step of the CS voice conversation of eMSC is:

Terminal is initiated the CS voice conversation based on eMSC.

13. the session establishing method of realization voice business continuity as claimed in claim 11 is characterized in that, and is described when terminal is in the buffer area of described IP network, generation based on the step of the CS voice conversation of eMSC is:

Terminal is initiated the voice conversation based on IMS;

After described IMS voice conversation is set up, initiate the VCC process, described voice conversation based on IMS is switched to CS voice conversation based on eMSC.

14. a method that realizes CSI service is characterized in that, may further comprise the steps:

Terminal is initiated the IMS business by IMS;

Terminal is initiated the CS business by eMSC.

15. the method for realization CSI service as claimed in claim 14 is characterized in that, when terminal is in described buffer area, initiates speech business by eMSC, initiates non-voice service by IMS.

16. the method for realization CSI service as claimed in claim 14 is characterized in that, when terminal is in described buffer area, by VCC the eMSC network is transferred in the speech business of described IMS business, non-voice IMS business still operates in the IMS network.When terminal is in described non-buffer area, the CS business of described eMSC is transferred to the IMS network by VCC.

17. a terminal equipment is characterized in that, comprising:

18. terminal equipment as claimed in claim 17 is characterized in that, described area update unit comprises:

Receiving element is used for the acceptance domain identification information;

Memory cell is used to store domain identifier information;

Judging unit is used to judge whether the domain identifier information that described receiving element receives is identical with the domain identifier information of described cell stores;

Upgrade control unit, be used for when the negative evaluation that receives described judging unit output as a result the time, controlling described memory cell is the domain identifier information that described receiving element receives with the domain identifier information updating of storing.

19. terminal equipment as claimed in claim 17 is characterized in that, also comprises:

Registering unit is used for terminal is registered.

20. a terminal equipment is characterized in that, comprising:

21. terminal equipment as claimed in claim 20 is characterized in that, described area update unit comprises:

Receiving element is used to receive network identification information;

Memory cell is used to store domain identifier information;

Judging unit is used for when terminal is positioned at IP network, judges whether described terminal receives CS network of network identification information;

Upgrade control unit, be used for when the affirmative determination that receives described judging unit output as a result the time, controlling described memory cell is the buffer area identification information with the domain identifier information updating of storing.

22. terminal equipment as claimed in claim 20 is characterized in that, also comprises:

Registering unit is used for terminal is registered.

23. the method for a realization from the CS network to the IP network voice business continuity is characterized in that, may further comprise the steps:

24. the method for realization as claimed in claim 23 from the CS network to the IP network voice business continuity is characterized in that described IP network comprises IMS network and eMSC network.

25. the method for realization as claimed in claim 23 from the CS network to the IP network voice business continuity, it is characterized in that, described IP network is divided into buffer area and non-buffer area, and described buffer area and described CS network adjacency comprise described eMSC network in described buffer area;

Described terminal when adjacent IP network moves, is initiated the VCC process from the CS network, and the step that the CS voice conversation of described terminal is switched in described IP network based on the voice conversation of eMSC is:

When described terminal from the CS network when adjacent IP network moves, judge whether described terminal is in described buffer area, if the judgment is Yes, initiate the VCC process, the CS voice conversation of described terminal is switched in described IP network voice conversation based on eMSC.

26, the method for realization as claimed in claim 25 from the CS network to the IP network voice business continuity is characterized in that, described buffer area is provided with buffer area sign, and the described step of judging whether described terminal is in described buffer area is:

27. the method for realization as claimed in claim 26 from the CS network to the IP network voice business continuity is characterized in that described method also comprises:

28. the method for realization as claimed in claim 27 from the CS network to the IP network voice business continuity is characterized in that described buffer area identification information is broadcasted to described terminal by the base station in the buffer area.

29. the method for realization as claimed in claim 27 from the CS network to the IP network voice business continuity is characterized in that, described buffer area identification information passes through RRC message informing terminal by the base station in the buffer area.

30. the method for realization as claimed in claim 26 from the CS network to the IP network voice business continuity is characterized in that described method also comprises:

When terminal is positioned at the CS network, judge whether described terminal receives the network identification information of IP network, if the judgment is Yes, be described buffer area identification information with the domain identifier information updating of described terminal storage.

31. the method for realization as claimed in claim 30 from the CS network to the IP network voice business continuity, it is characterized in that the network identification information of described IP network comprises in the network frequency point information of the adjacent cell list of described IP network, described IP network at least a.

32., it is characterized in that described voice conversation is calling session or called call session as the method for each described realization from the CS network to the IP network voice business continuity among the claim 23-31.

33. a terminal equipment is characterized in that, comprising:

34. a terminal equipment is characterized in that, comprising:

35. a method that realizes the IMS business continuance is characterized in that, may further comprise the steps:

36. the method for realization IMS business continuance as claimed in claim 35 is characterized in that described IP network A is divided into buffer area and non-buffer area, described buffer area and described IP network B adjacency;

Described when terminal from IP network A when IP network B moves, terminal is established to the tunnel of IP network B in IP network A, initiate the VCC process, by described tunnel with the step that the IMS business of terminal in IP network A switches to the IMS business among the IP network B is:

When terminal from IP network A when adjacent IP network B moves, judge whether described terminal is in described buffer area, if the judgment is Yes, terminal is established to the tunnel of IP network B in IP network A, initiate the VCC process, the IMS business of terminal in IP network A switched to IMS business among the IP network B by described tunnel.

37. the method for realization as claimed in claim 36 IMS business continuance is characterized in that, described buffer area is provided with the buffer area sign, and the described step of judging whether described terminal is in described buffer area is:

38. the method for realization IMS business continuance as claimed in claim 37 is characterized in that described method also comprises:

39. the method for realization IMS business continuance as claimed in claim 38 is characterized in that described buffer area identification information is broadcasted to described terminal by the base station in the buffer area.

40. the method for realization IMS business continuance as claimed in claim 38 is characterized in that described buffer area identification information passes through Radio Link message informing terminal by the base station in the buffer area.

41. the method for realization IMS business continuance as claimed in claim 39 is characterized in that method also comprises:

When terminal is positioned at IP network A, judge whether described terminal receives the network identification information of IP network B, if the judgment is Yes, be described buffer area identification information with the domain identifier information updating of described terminal storage.

42. the method for realization as claimed in claim 41 IMS business continuance is characterized in that, the network identification information of described IP network B comprises in the network frequency point information of the adjacent cell list of described IP network B, described IP network B at least a.

43. the method as each described realization IMS business continuance among the claim 35-42 is characterized in that described voice conversation is calling session or called call session.

44. a terminal equipment is characterized in that, comprising:

45. a terminal equipment is characterized in that, comprising: