CN1947360A

CN1947360A - Method for handover of mobile communication terminal in mixed mobile communication network of asynchronous and synchronous communication network

Info

Publication number: CN1947360A
Application number: CNA200580012951XA
Authority: CN
Inventors: 朱宰永; 李相研; 咸熙赫; 朱荣虎; 韩景熙
Original assignee: SK Telecom Co Ltd
Current assignee: SK Telecom Co Ltd
Priority date: 2004-03-10
Filing date: 2005-03-10
Publication date: 2007-04-11
Anticipated expiration: 2025-03-10
Also published as: CN100561894C; KR20050090924A; KR100612677B1

Abstract

Disclosed is a method for handover of a mobile communication terminal by using an Interworking Interoperability Function (HF) unit for signal exchange between asynchronous and synchronous mobile switching centers and a protocol (ISUP) for message transmission between the mobile switching centers in a hybrid mobile communication system including both an asynchronous network and a synchronous network.

Description

The method of handing-over mobile communication terminal in the mixed mobile communication network of asynchronous and synchronous communication network

Technical field

The present invention relates to a kind of method that in mobile communications network, joins (handover), and more specifically relate to a kind ofly in comprising the two mixed mobile communication system of asynchronous network and synchronizing network, the agreement (ISUP) that is used for carrying out intercommunication collaborative work ability function (IIF) unit of handshaking and be used for carrying out transmission of messages between asynchronous and synchronous mobile switching centre between mobile switching centre by use joins the method for mobile communication terminal.

Background technology

According to the development of mobile communication technology, mobile communications network has had continuous development by replacement from generation to generation.In current mobile communications network, there is the asynchronous mobile communiation system (WCDMA mobile communication system) that is called as the synchronous mobile communication system (CDMA mobile communication system) of the 2nd generation or the 2.5th third-generation mobile communication system and is called as the 3rd third-generation mobile communication system usually simultaneously.

Therefore, researching and developing the mobile communication terminal (for example, DBDM (DBDM) terminal) that can in network, use now with such structure.Utilize this mobile communication terminal, the user can use dissimilar service in asynchronous system service area and the synchro system service area respectively.Such DBDM mobile communication terminal comprises antenna, at the synchronous modem of synchronous mobile communication service, at the asynchronous modem controller and the shared module of asynchronous mobile communiation service.

But, asynchronous mobile communiation system is in the starting stage that its service is provided now, and need drop in a large number for the construction of system.Therefore, current asynchronous communication system can't provide service for very big zone, therefore has the service area overlapping with synchronous mobile communication system usually.Because the service area of asynchronous mobile communiation system has such restriction, so when the user of the asynchronous mobile communiation system of the service of using asynchronous mobile communiation system moves in the service area of the synchronous mobile communication system that the asynchronous mobile communiation service is not provided, call out and connect and to be interrupted.

Therefore, in order in the system of asynchronous mobile communiation system and synchronous mobile communication system coexistence, to provide continuous service, especially when the asynchronous mobile communiation service area is less than the synchronous mobile communication service area, need join.In addition, not only in the mobile communication terminal ongoing communication, need join, and under the mobile communication terminal that makes a call is being waited for from the situation of the response of the termination ends (terminator) of calling out and the terminating mobile communication terminal be under the situation to the prompting state of call terminations (call termination), also need to join.

Summary of the invention

Therefore, in view of problem above-mentioned, made the present invention, and an object of the present invention is to provide a kind of mobile communication terminal of working as is using under the state of voice communications services, the method of handing-over mobile communication terminal when mobile communication terminal moves in the synchronous mobile communication system service area, be used in asynchronous and synchronous intercommunication collaborative work ability function (IIF) unit of switching signal and be used for the agreement (ISUP) of message transfer between mobile switching centre between the mobile switching centre by use, this method can provide continuous service, and can interrupt communication.

Another object of the present invention provide a kind of when mobile communication terminal be in make a call after the state of wait-for-response down or under being in by the prompting state after the terminating call, the agreement (ISUP) that the method for handing-over mobile communication terminal when mobile communication terminal moves in the synchronous mobile communication system service area, this method are used for intercommunication collaborative work ability function (IIF) unit of switching signal between asynchronous and synchronous mobile switching centre by use and are used for message transfer between mobile switching centre joins.

According to an aspect of the present invention, provided a kind of in comprising the two mixed mobile communication system of asynchronous mobile communiation system and synchronous mobile communication system the method for handing-over DBDM mobile communication terminal, asynchronous mobile communiation system comprises Node B, radio network controller and asynchronous mobile switching centre, synchronous mobile communication system comprises base station transceiver station (base transceiver station), base station controller and synchronous mobile switching centre, asynchronous mobile switching centre and synchronous mobile switching centre be by intercommunication collaborative work ability function (IIF) unit interconnective and they link to each other with two stack home location registers (D-HLR) separately, mobile communication terminal can the two communicates with asynchronous mobile communiation system and synchronous mobile communication system, and the method comprising the steps of: (a) send handover request message in response to the handover request from mobile communication terminal to asynchronous mobile switching centre by radio network controller; (b) send handover request message by asynchronous mobile switching centre to the IIF unit; (c) transmit user profile and receive user profile by the IIF unit requests from D-HLR; (d) send to base station transceiver station/base station controller from the IIF unit to the synchronous mobile switching centre transmission handing-over Indication message and the Indication message that will join from synchronous mobile switching centre; (e) send the response message that handover request is made to synchronous mobile switching centre for mobile communication terminal allocation of downlink communication channel and by base station transceiver station/base station controller; (f) send response, send the response message of handover request and between mobile switching centre and the asynchronous mobile switching centre trunk line is being set synchronously to the IIF unit from synchronous mobile switching centre from the IIF unit to asynchronous mobile switching centre to the handing-over Indication message; (g) send initial address message and receive response to the IIF unit by asynchronous mobile switching centre, and the trunk line of finishing between synchronous mobile switching centre and the asynchronous mobile switching centre is set up; (h) finish at the resource allocation of handing-over to the radio network controller report by asynchronous mobile switching centre; (i) join to the mobile communication terminal indication by Node B by radio network controller; (i) mode switch with mobile communication terminal is a synchronous mobile switching centre connection mode; (k) send the access signal by the IIF unit to asynchronous mobile switching centre; (l) by mobile communication terminal by uplink communication channel to base station transceiver station/base station controller transmit frame and lead code (preamble), thereby report handing-over is finished; (m) remove being connected between asynchronous mobile communiation system and the synchronous mobile communication system.

According to other aspects of the invention, mobile communication terminal can be under the voice call state or be under the prompting state to call terminations.

When mobile communication terminal is in following time of state of the response that wait makes the calling of being initiated by this mobile communication terminal, handover request message and handing-over Indication message comprise that the report mobile communication terminal is in the information of the state of wait-for-response.

In this case, preferably, this method can also comprise step: (n) when the call terminations mobile communication terminal is made response, by the connection of asynchronous mobile switching centre to IIF unit reporting call terminating mobile communication terminal; (o) by the IIF unit between synchronous mobile switching centre transmitting system response message and by synchronous mobile switching centre to base station transceiver station/base station controller reporting call terminating mobile communication terminal made the response and be connected with synchronous mobile switching centre; (p) by the synchronous mobile switching centre response signal that response message is made between the IIF unit sends system.

When mobile communication terminal is in following time of prompting state to call terminations, handover request message and handing-over Indication message comprise that the report mobile communication terminal is in the information to the prompting state of call terminations.

In this case, preferably, this method can be further comprising the steps of: (q) be in following time of prompting state to call terminations at mobile communication terminal, be connected with synchronous mobile switching centre by base station transceiver station/base station controller report mobile communication terminal; (r) from synchronous mobile switching centre response message and response has been made in prompting and be connected to asynchronous mobile switching centre report mobile communication terminal between IIF unit transmitting system with synchronous mobile switching centre by the IIF unit; (s) from the IIF unit response signal that response message is made between synchronous mobile switching centre sends system.

Preferably, step (f) can may further comprise the steps: send initial address message (IAM) from asynchronous mobile switching centre to the IIF unit, this IAM is an isup message; And send the address from the IIF unit to asynchronous mobile switching centre and finish message (ACM), ACM is an isup message.

And step (m) can may further comprise the steps: finished to the report handing-over of synchronous mobile switching centre by base station transceiver station/base station controller, and finished to the report handing-over of IIF unit by synchronous mobile switching centre; Remove to the request of asynchronous mobile switching centre by the IIF unit and to connect and by using isup message to report being connected between synchronous mobile switching centre and the mobile communication terminal; And remove being connected between asynchronous mobile switching centre and the Node B/radio network controller.

Handover request message in the step (a) comprises the parameter that comprises the message of using in the synchronous mobile communication system relevant with handing-over, contiguous emitter region information, neighbor base station information, type of message, type of handover, handing-over reason, source base station controller ID, target base station controller ID, wireless access operator (RAB) information and wireless region related information.

Asynchronous mobile switching centre judges that with reference to the contiguous emitter region information of mobile communication terminal and neighbor base station information the handing-over of being asked is the handing-over between the contiguous emitter region or to the handing-over of synchronous mobile communication system in the asynchronous mobile communiation system.

In step (b), asynchronous mobile switching centre sends the asynchronous ID numbers (MSISDN) of mobile communication terminal with handover request message.

The user profile that receives from D-HLR by the IIF unit comprise mobile communication terminal synchronization identifier (MIN, ESN).

In step (c), user profile is asked to transmit by using one of synchronization message and asynchronous message in the IIF unit.

The IIF unit produced charging ID and this charging ID and inner exchanging central circuit ID (InterMSCCiruitID) is inserted in the handing-over Indication message that is sent before sending the handing-over Indication message to synchronous mobile switching centre, charging ID comprises the ID of the synchronous mobile switching centre that asynchronous mobile switching centre will connect.

The handover request message that sends to synchronous mobile switching centre from the IIF unit comprises the parameter that comprises charging ID, ESN, inner exchanging central circuit ID and MIN, and comprises the parameter that comprises CDMA Channel data and CDMA Channel tabulation from the response message that synchronous mobile switching centre sends to the IIF unit.

In step (h), the RAB tabulation that message comprises type of message, RRC container and will remove is finished in the resource allocation that sends to radio network controller from asynchronous mobile switching centre.

Insert signal and comprise the radio resource information of calling ID, Application Protocol Data Unit (APDU) and selecting.

Finish after handing-over and call terminations mobile communication terminal make the step of response calling out the originating mobile communication terminal, receiving when calling out the call release request of originating mobile communication terminal or call terminations mobile communication terminal, asynchronous mobile switching centre sends request to the IIF unit and removes the trunk line connection between the asynchronous and synchronous mobile switching centre and call out the message that is connected, and response is made to this message in the IIF unit, thereby makes the trunk line between the asynchronous and synchronous mobile switching centre obtain removing.

The parameter that the message that the request call disestablishment connects comprises and comprises inner exchanging central circuit ID, removes reason, charging ID and MIN, and the response message that the message that the request call disestablishment connects is made comprises charging ID.

According to the present invention, in comprising the two mixed mobile communication system of asynchronous network and synchronizing network, the state that is in voice call when bimodulus DFS double frequency shift mobile communication terminal down or wait for to the state of the response of calling out down or to the prompting state of call terminations down the time when the service area of asynchronous mobile communiation system moves to the service area of synchronous mobile communication system, handing-over is to be undertaken by intercommunication collaborative work ability function (IIF) unit and ISUP (agreement that is used for message transfer between mobile switching centre) that use is used for switching signal between asynchronous and synchronous mobile switching centre.Therefore, the present invention can provide high quality services, is which and need not manage mobile communication system in generation.

And, the present invention prevented from unnecessary big service area, to make up asynchronous mobile communiation system, therefore can reduce the required investment of design asynchronous mobile communiation system.

Description of drawings

In conjunction with the accompanying drawings, from following detailed description, aforementioned and other purpose, feature and advantage of the present invention will become more apparent, wherein:

Fig. 1 is the block diagram according to mobile communications network of the present invention;

Fig. 2 is used to explain the block diagram of the notion of handing-over mobile communication terminal during carrying out voice communication between asynchronous network and the synchronizing network of first embodiment of the invention;

Fig. 3 is the flow chart that carries out the processing procedure of handing-over mobile communication terminal during the voice communication between the asynchronous network of first embodiment of the invention and the synchronizing network;

Fig. 4 to 17 shows and is included in the view that is used for according to the parameter of the message of handing-over of the present invention;

Figure 18 be used to explain second embodiment of the invention be in the block diagram of the notion of the mobile communication terminal under the state of the response that wait makes calling in handing-over between asynchronous network and the synchronizing network;

Figure 19 and 20 be second embodiment of the invention be in the flow chart of the processing procedure of the mobile communication terminal under the state of the response that wait makes calling in handing-over between asynchronous network and the synchronizing network;

Figure 21 shows and is included in the view that is used for according to the parameter of the message of handing-over of the present invention;

Figure 22 is used to explain be in block diagram to the notion of the mobile communication terminal under the prompting state of call terminations according to the 3rd execution mode of the present invention in handing-over between asynchronous network and the synchronizing network; With

Figure 23 and 24 is in flow chart to the processing procedure of the mobile communication terminal under the prompting state of call terminations according to the 3rd execution mode of the present invention in handing-over between asynchronous network and the synchronizing network.

Embodiment

To describe preferred implementation of the present invention in detail now.

Hereinafter, introduce the method for handing-over mobile communication terminal in comprising the two mixed mobile communication system of asynchronous network and synchronizing network of first embodiment of the invention with reference to the accompanying drawings.

Fig. 1 is the block diagram according to mobile communications network of the present invention.

Mobile communication terminal 10 according to the present invention is to support asynchronous mobile communiation service and synchronous mobile communication to serve the DBDM of the two (DBDM) mobile communication terminal, and mobile communication terminal 10 comprises synchronous modem at synchronous mobile communication service, at the asynchronous modem controller and the shared module of asynchronous mobile communiation service.Therefore, mobile communication terminal 10 can connect asynchronous mobile communiation system 20 or synchronous mobile communication system 30 by wireless mode, so that use the voice-and-data service that they provide.

Asynchronous mobile communiation system 20 comprises Node B/RNC 210, asynchronous mobile switching centre (MSC) 220, GPRS (GPRS) network 240, Serving GPRS Support Node (SGSN) 230 and Gateway GPRS Support Node (GGSN) 250.Node B/RNC 210 representative be used to support the radio communication of carrying out with mobile communication terminal 10 the base station Node B or be used for Control Node B and mobile communication terminal 10 carries out the RNC (radio network controller) 210 of radio communication.Asynchronous mobile switching centre 220 links to each other with Node B/RNC 210, and calls out exchange by Node B/RNC 210 with mobile communication terminal 10, so that provide service to mobile communication terminal 10.SGSN 230 is connected between Node B/RNC 210 and the GPRS network 240, with position and execution access control and the security function that continues tracing mobile commutation terminal 10.GGSN 250 links to each other with SGSN 230 and links to each other with IP network 70 by GPRS network 240, to support and the intercommunication of external system, divides into groups with exchange.

Synchronous mobile communication system 30 comprises BTS/BSC 310, synchronous mobile switching centre (MSC) 320, PDSN 330 and data core network (DCN) 340.BTS/BSC 310 representative is used to support to carry out the BTS (base transceiver machine station) of radio communication with mobile communication terminal 10 or is used to control BTS and mobile communication terminal 10 carries out the BSC (base station controller) of radio communication.Synchronously mobile switching centre 320 link to each other with at least one BSC and with its switched call.PDSN 330 links to each other with BSC, to provide packet data service to the user.DCN 340 supports being connected between PDSN 330 and the IP network 70.

In addition, the

mobile switching centre

220 and 320 of asynchronous mobile communiation system 20 and synchronous mobile communication system 30 is interconnective by intercommunication collaborative work ability function (IIF) unit 60.IIF unit 60 receive convert synchronization message to from the asynchronous message of asynchronous mobile switching centre 220, with received asynchronous message and will change then after synchronization message send to synchronous mobile switching centre 320.And IIF unit 60 makes up and manages at the synchronous mobile communication system database of information.

Asynchronous mobile switching centre 220 and synchronous mobile switching centre 320 are interconnective by No.7 global semaphore network 40, and they are connected with two stack home location registers (D-HLR) 50 by this No.7 global semaphore network 40.The asynchronous mobile communiation system user profile and the corresponding synchronous mobile communication system user information of 50 storages of this pair stack home location register and management DB DM mobile communication terminal 10, thus make asynchronous mobile switching centre 220 and synchronous mobile switching centre 320 in the work of carrying out such as handing-over, to consult these information.

First execution mode

First execution mode of the present invention relate to a kind of in comprising the two mixed mobile communication system of asynchronous network and synchronizing network, carry out voice communication during the method for handing-over mobile communication terminal.

In the network of the structure of on have, introducing, the mobile communication terminal 10 that carries out voice communication in the service area of asynchronous mobile communiation system 20 is periodically measured the intensity of the signal that sends from the intensity of the signal of the serving node B of mobile communication terminal 10 current connections with from the adjacent node Bs adjacent with serving node B, and measured intensity is reported to serving node B.In this case, Node B/RNC 210 with this report with sending to asynchronous mobile switching centre 220 by the information of mobile communication terminal 10 detected contiguous emitter regions, base station IDs etc.

When the handover request message that receives from RNC, asynchronous mobile switching centre 220 with reference to the contiguous emitter region, the base station IDs that receive from RNC wait judge the handing-over of being asked be close in the asynchronous mobile communiation system 20 between the emitter regions handing-over or to the handing-over of synchronous mobile communication system 30.

When being close to the handing-over between the emitter region in the handing-over of being asked is asynchronous mobile communiation system 20, asynchronous mobile switching centre 220 is close to the handing-over between the emitter region.On the contrary, when the handing-over of being asked is handing-over to synchronous mobile communication system 30, the handing-over that asynchronous mobile switching centre 220 carries out to synchronous mobile communication system 30 IIF unit 60.In order to join, IIF unit 60 asynchronous message is converted to synchronization message and will change after synchronization message send to synchronous mobile switching centre 320.In order to carry out this operation, need IIF unit 60 to make up in advance and manage the synchronous mobile communication system database of information.This database comprises the information, signaling point of switching center, information of the trunk line relevant with dedicated channel etc.According to synchronous mobile communication system information with from the handover request of asynchronous mobile switching centre 220, the target that 60 selections of IIF unit will join (in other words, mobile switching centre 220), and produce the charging ID of the ID that comprises handing-over target mobile switching centre, this charging ID can obtain using in handing-over is after this handled.

Hereinafter, introduce the processing procedure of handing-over in detail with reference to Fig. 2 and Fig. 3.

Fig. 2 is the block diagram that is used for the notion of the handing-over that graphic extension carries out when the mobile communication terminal that carries out voice communication in the asynchronous mobile communiation system service area moves to the synchronous mobile communication system service area, and Fig. 3 is the flow chart that is used for the processing procedure that mobile communication terminal joins in the process of carrying out voice communication.

When the mobile communication terminal 10 that in the service area of asynchronous mobile communiation system 20, carries out voice communication when the service area of synchronous mobile communication system 30 moves, mobile communication terminal 10 detects from the signal of synchronous mobile communication system 30, periodically measure the intensity from the signal of the current service Node B of asynchronous mobile communiation system 20 and neighbor base station (Node B s), and measured intensity is reported to the current service Node B.When the intensity from the signal of the current service Node B of mobile communication terminal 10 current connections was lower than predetermined value, mobile communication terminal 10 sent handover request message (IU-Reloc Required) (step S101) by RNC to asynchronous mobile switching centre 220.

This handover request message (IU Reloc Required) comprises the message of using in the synchronous mobile communication system relevant with handing-over.Here, RNC will send to asynchronous mobile switching centre 220 with handover request message from contiguous emitter region information that mobile communication terminal 10 receives, neighbor base station information (ID of contiguous BS) etc.According to this information, asynchronous mobile switching centre 220 judges that the handing-over of being asked is the handing-over between the contiguous emitter regions or to the handing-over of synchronous mobile communication system 30 in the asynchronous mobile communiation system 220.The handover request message (IU Reloc Required) that sends to asynchronous mobile switching centre 220 from RNC comprises the parameter such as type of message, type of handover, handing-over reason, source base station controller ID, target base station controller ID, radio access carrier (RAB) information and wireless region related information, as shown in Figure 4.In addition, RNC adds the information of using in the synchronous mobile communication system relevant with handing-over on the parameter ' old BSS is to the information (Old BSS To New BSS Information) of new NSS ' that is included in the handover request message to.Fig. 5 is shown specifically the information relevant with handing-over of being added.

When receiving handover request message, asynchronous mobile switching centre 220 sends the asynchronous message (MAP Prep Handover Req) (step S102) of request handing-over to IIF unit 60.Here, extension container is added on the asynchronous message, then the asynchronous identifier (MSISDN) of this asynchronous message with mobile communication terminal 10 is sent.This asynchronous message comprises the parameter such as calling ID, Target Launch Zone ID, target radio network controller ID and MSISDN, as shown in Figure 6.

After this, by consulting the async user's information (MSISDN) that receives from asynchronous mobile switching centre 220, IIF unit 60 request D-HLR 50 send user profile (Call Data Request) (step S103).In other words, and the synchronizing network identifier of IIF unit 60 request mobile communication terminals 10 (MIN, ESN).In step S103, IIF unit 60 can be by using the synchronous network identifier information of asynchronous message (MAP SEND IMSI) to D-HLR 50 request users.

When the request that receives user profile, D-HLR 50 consults database, (MIN ESN) and then sends to the information of being extracted IIF unit 60 (Call Data Req Ack) (step S104) to extract the synchronous network identifier information of relative users.Here, request user's the synchronizing network message (Call Data Request) of synchronous network identifier information comprises such as charging ID and numeral (promptly, MSISDN) and so on parameter, as shown in Figure 7, and response message (Call DataReq Ack) comprise the message such as ESN, MIN and MSCID.Simultaneously, when using asynchronous message (MAP_SEND_IMSI) in the process of the synchronous network identifier information of asking the user, asynchronous message (MAP_SEND_IMSI) comprises parameter as shown in Figure 8.

When D-HLR 50 receives user profile, IIF 60 indications (Facilities Directive2) join (step S105) to synchronous mobile switching centre 320, and mobile switching centre 320 sends handover request message (HandoffRequest) (step S106) to BTS/BSC 310 synchronously.

Sending handing-over Indication message (Facilities Directive2) before to synchronous mobile switching centre 320, IIF unit 60 produces charging identifier (ID) and is inserted in handing-over Indication message (Facilities Directive2).And IIF unit 60 is inserted into inner exchanging central circuit ID (InterMSCCircuitID) in the handing-over Indication message (FacilitiesDirective2) that is sent.Charging ID comprises the ID of the synchronous mobile switching centre 320 that asynchronous mobile switching centre 220 will connect.

When synchronous mobile switching centre 320 receives handover request message, BTS/BSC 310 sends empty frame (Forward Traffic Channel frame) by downlink communication channel to the synchronous modem of mobile communication terminal 10, thereby realizes the distribution (step S107) of downlink channel.Then, BTS/BSC 310 sends response message (Handoff Request Ack) (step S108) in response to the handover request message of coming motor synchronizing mobile switching centre 320 to synchronous mobile switching centre 320.Then, synchronous mobile switching centre 320 sends response messages (Facilities Directive2 Ack) (step S109) in response to the handing-over Indication message of step S102 to asynchronous mobile switching centre 220.As a result, asynchronous mobile switching centre 220 and the synchronous trunk line between the mobile switching centre 320 have been set up.

More specifically, IIF unit 60 is provided with physical relay line and as the mapping relations between the dedicated channel of the identifier that is used to set up logical trunk, this information setting is sent to synchronous mobile switching centre 320 for the inner exchanging central circuit ID (InterMSCCircuitID) of handing-over Indication message (Facilities Directive2) and with set ID.After this, when having sent response message (Facilities Directive2 Ack) from synchronous mobile switching centre 320, just set up the trunk line between asynchronous mobile switching centre 220 and the synchronous mobile switching centre 320.The handing-over Indication message (FacilitiesDirective2) that sends between IIF unit 60 and synchronous mobile switching centre 320 comprises the parameter such as charging ID, ESN, inner exchanging central circuit ID and MIN, as shown in Figure 9, and its response message (Facilities Directive2 Ack) comprises the parameter such as the tabulation of CDMA Channel data and CDMA Channel.

After this, asynchronous mobile switching centre 220 sends initial address message (IAM) to IIF unit 60, and IIF unit 60 sends AC address complete message (ACM) in response to this IAM, thereby make trunk line between asynchronous mobile switching centre 220 and synchronous mobile switching centre 320, set up, and can carry out Route Selection (step S111 and S112) to calling by this trunk line.The message that is used for the trunk line setting between the mobile switching centre is by ISUP transmission/reception.

After the trunk line that is provided with in the mode of introducing above between the switching center, asynchronous mobile switching centre 220 finishes (IURelocation order) (step S113) to Node B/RNC 210 reports at the resource allocation of handing-over.When receiving this report (IU Relocation order), the asynchronous modem controller of Node B/RNC 210 request mobile communication terminals 10 is carried out handing-over (Handover from UTRAN order) (step S114).Here, report comprises the parameter that comprises that type of message, RRC container, the RAB that will remove tabulate etc. at the message (IU Relocation order) finished of resource allocation of handing-over, as shown in figure 10.Here, handing-over message (HDM) the L3 parameter that is to use resource allocation to finish report message transmits.Figure 11 represents to join the tabulation of the special parameters in the message.

After this, the asynchronous modem controller of mobile communication terminal 10 is to synchronous modem transmitting channel assignment information (step S115), and IIF unit 60 inserts signal (MAP Process Access Signaling Req) (step S116) to 220 requests of asynchronous mobile switching centre.This access signal comprises and calls ID, Application Protocol Data Unit (APDU), selected radio resource information etc.Figure 12 shows the tabulation that inserts the special parameters in the signal.

In addition, the synchronous modem of mobile communication terminal 10 is finished (step S118) by uplink communication channel to the BTS/BSC of synchronous mobile communication system 310 transmit frames or lead code (step S117) and report (Handoff Completion Message) handing-over.When receiving this report (Handoff Completion Message), BTS/BSC 310 sends response signal (BS Ack Order) (step S119) in response to this report.Then, synchronous modem has been set up fully with the calling of synchronous mobile communication system to the asynchronous modem controller report and has been connected (step S120).

Then, BTS/BSC 310 finishes (step S121) to 320 report (HandoffComplete) handing-over of synchronous mobile switching centre, and synchronously mobile switching centre 320 to the IIF unit 60 report (Mobile On Channel) handing-over finish (step S122).When receiving this report, 60 requests asynchronous mobile switching centre 220 in IIF unit removes and connects (MAP SendEnd Signal Req) (step S123).

In addition, IIF unit 60 sends the message that is connected (ANSWER) (step S124) between report mobile communication terminals and the synchronous mobile switching centre 320 to asynchronous mobile switching centre 220.Then, will be connected releasing (IURelease order, IU Release Complete) (step 125 and 126) between asynchronous mobile switching centre 220 and the Node B/RNC 210.

Here, the handing-over that sends to IIF unit 60 from mobile switching centre 320 is finished message (Mobile On Channel) and is comprised parameter as shown in figure 13, and the connection that sends to asynchronous mobile switching centre 220 from IIF unit 60 is removed request message (MAP Send End SignalReq) and comprised parameter as shown in Figure 14.In addition, for remove between Node B/RNC and the asynchronous mobile switching centre 220 be connected and the message (IU Release order, IU ReleaseComplete) sent comprises the parameter shown in Figure 15 and 16.

The processing procedure of the handing-over of mobile communication terminal in the synchronous mobile communication system call disestablishment connection afterwards of carrying out voice communication in the service area of having finished according to the processing procedure of introducing above at asynchronous mobile communiation system will briefly be discussed below.The releasing that call out to connect can be at first asked by the mobile communication terminal of the user in the service area that still is in asynchronous mobile communiation system or user's the mobile communication terminal that has been handed off to the service area of synchronous mobile communication system.What provide in the present embodiment, is the explanation of situation about being connected by the mobile communication terminal request call disestablishment of the user in the service area that still is in asynchronous mobile communiation system.

When the mobile communication terminal call disestablishment, asynchronous mobile switching centre 220 is connected releasing (Call Release) (step S127) and the trunk line between the mobile switching centre is connected releasing (Release) (step S128) with the calling between the mobile switching centre 320 synchronously.After this, asynchronous mobile switching centre 220 finishes (MAP Send EndSignal Resp) (step S129) to the releasing that 60 reports of IIF unit connect, and IIF unit 60 sends call release request message (Facilities Release) (step S130) to synchronous mobile switching centre 320.When synchronous mobile switching centre 320 has sent the response (Facilities Ack) that this request message is made, the trunk line that is arranged between the mobile switching centre is removed (step S131).Here, as shown in Figure 17, call release request message (Facilities Release) comprises and comprises inner MSC circuit I D, removes reason, the parameter of charging ID, MIN etc., and response message (Facilities Ack) comprises the parameter that comprises charging ID etc.

In the present embodiment, asynchronous mobile switching centre judge the handing-over of being asked be between the contiguous emitter region in the asynchronous mobile communiation system handing-over or to the handing-over of synchronous mobile communication system.When judging that the handing-over asked is handing-over to synchronous mobile communication system, join by this way: exchanging messages between mobile switching centre and the asynchronous mobile switching centre synchronously by using ISUP (agreement that the transmission of messages between the mobile switching centre is used), IIF plays the unit effect of transducer simultaneously.In order to carry out this operation, need the IIF unit to make up in advance and manage the synchronous mobile communication system database of information.

Second execution mode

Second execution mode of the present invention relate to a kind of in comprising the two mixed mobile communication system of asynchronous network and synchronizing network handing-over be in the method for mobile communication terminal of the state of the response that wait makes calling.

Hereinafter, with reference to Figure 18 introduce in a kind of network of the structure of on have, introducing, the method for handing-over mobile communication terminal 10 during wait-for-response in mobile communication terminal 10 is in the service area of asynchronous mobile communiation system 20 and after making a call.

Figure 18 is used for the block diagram of notion that the calling originating mobile communication terminal of the response that the calling of initiating is made is being waited in graphic extension handing-over between asynchronous network and synchronizing network second embodiment of the invention, and wherein mobile communication terminal comprises and calls out originating mobile communication terminal 10a and call terminations mobile communication terminal 10b.

When Node B/RNC 210 according to the prompting state of initiating to make call terminations mobile communication terminal 10b to be in call terminations by the calling of calling out originating mobile communication terminal 10a down and call out that originating mobile communication terminal 10a moves to synchronously and among the service area B of overlapping service area C between the asynchronous mobile communiation system or synchronous mobile communication system the time, call out the Node B request handing-over of originating mobile communication terminal 10a, and Node B joins to 220 requests of asynchronous mobile switching centre by RNC then to asynchronous mobile communiation system 20.

Then, begin to call out the handing-over of originating mobile communication terminal 10a between asynchronous mobile communiation system 20 and synchronous mobile communication system 30.When handing-over finish and asynchronous mobile switching centre 220 when mobile switching centre 320 interconnects by IIF unit 60 synchronously, call out originating mobile communication terminal 10a and be connected with synchronous mobile communication system 30 by BTS/BSC 310 and wait for response from call terminations mobile communication terminal 10b.

For the mobile communication terminal under the state that is in the response that wait makes calling is joined, mobile communication terminal 10a periodically measures from the intensity of the signal of the serving node B of mobile communication terminal 10 current connections with from the intensity of the signal of the adjacent node Bs adjacent with this serving node B, and measured intensity is reported to serving node B.In this case, Node B/RNC 210 with this report together with sending to asynchronous mobile switching centre 220 by the information of the detected contiguous emitter region of mobile communication terminal 10a, base station IDs etc.

When the handover request message that receives from RNC, asynchronous mobile switching centre 220 waits with reference to the adjacent service district, the base station IDs that receive from RNC judges that the handing-over of being asked is the handing-over between the contiguous emitter regions or to the handing-over of synchronous mobile communication system 30 in the asynchronous mobile communiation system 20.

When being close to the handing-over between the emitter region in the handing-over of being asked is asynchronous mobile communiation system 20, asynchronous mobile switching centre 220 is close to the handing-over between the emitter region.On the contrary, when the handing-over of being asked is handing-over to synchronous mobile communication system 30, the handing-over that asynchronous mobile switching centre 220 carries out to synchronous mobile communication system 30 IIF unit 60.In order to join, IIF unit 60 asynchronous message is converted to synchronization message and will change after synchronization message send to synchronous mobile switching centre 320.In order to carry out this operation, need IIF unit 60 to make up in advance and manage the synchronous mobile communication system database of information.This database comprises the information, signaling point of switching center, information of the trunk line relevant with dedicated channel etc.According to synchronous mobile communication system information with from the handover request of asynchronous mobile switching centre 220, the target that 60 selections of IIF unit will join, in other words, mobile switching centre 220, and produce the charging ID of the ID that comprises handing-over target mobile switching centre, this charging ID can obtain using in handing-over is after this handled.In addition, IIF unit 60 is provided with the trunk line between asynchronous mobile switching centre 220 and the synchronous mobile switching centre 320, thereby make asynchronous mobile switching centre 220 and synchronous mobile switching centre 320 to exchange messages by using ISUP, ISUP is the message transmission protocol between the mobile switching centre.

Hereinafter, introduce the processing procedure of the mobile communication terminal under the state that handing-over is in Waiting for Call response in further detail with reference to Figure 19 and 20.

The flow chart of the processing procedure that the mobile communication terminal under Figure 19 and the 20 graphic extensions state that is in Waiting for Call response second embodiment of the invention joins to synchronizing network from asynchronous network.Asynchronous modem controller shown in Figure 19 and 20 and synchronous modem are the modulator-demodulators of calling out originating mobile communication terminal 10a.

Mobile communication terminal 10a in the service area that is in asynchronous mobile communiation system 20 after the mobile communication terminal 10b in the service area that equally also is in asynchronous mobile communiation system 20 has initiated to call out, shift to the service area of synchronous mobile communication system 30 and be in the asynchronous mobile communiation system service area then and the synchronous mobile communication system service area between overlapping service area C in the time, mobile communication terminal 10a detects the signal from synchronous mobile communication system 30, periodically measure intensity, and measured intensity is reported to the current service Node B from the signal of the current service Node B of asynchronous mobile communiation system 20 and neighbor base station (Node B s).When the intensity from the signal of the current service Node B of the current connection of mobile communication terminal 10a was lower than predetermined value, mobile communication terminal 10a sent handover request message (IU-Reloc Required) (step S201) by RNC to asynchronous mobile switching centre 220.

Be actually the same in response to the continuous processing procedure (the step S201-S226 among Figure 19 and 20) that handover request joins and releasing connects according to the releasing connection requests then, so omitted their detailed description here with the processing procedure (the step S101-S126 among Fig. 3) of first embodiment of the invention.

But, in second execution mode of the present invention, when asynchronous mobile switching centre 220 in response to received handover request message when IIF unit 60 sends the asynchronous message (MAP Prep Handover Req) of request handing-over (step S202), extension container is added on the asynchronous message, then the asynchronous identifier (MSISDN) of this asynchronous message with mobile communication terminal 10a sent, and report mobile communication terminal 10a is in the state of wait-for-response.In order to carry out this operation, must be included in the state that parameter in the handover request message (MAP Rrep Handover Req) is expressed mobile communication terminal 10a by use.This message (MAP Prep HandoverReq) comprises the parameter such as calling ID, Target Launch Zone ID, target radio network controller ID and MSISDN, as shown in Figure 6.

The handing-over Indication message (Facilities Directive2) that sends between IIF unit 60 and synchronous mobile switching centre 320 comprises the parameter such as charging ID, ESN, inner exchanging central circuit ID, MIN and transfer (handoff) state, as shown in Figure 9.Especially, the parameter transfer state is the identifier that the representative mobile communication terminal is in the state of wait-for-response.And its response message (Facilities Directive2 Ack) comprises the parameter such as CDMA Channel data and CDMA Channel tabulation.

When mobile communication terminal 10a has finished by processing procedure above-mentioned from the handing-over of state in synchronous mobile communication system of wait-for-response, set up calling between the call terminations mobile communication terminal in the asynchronous mobile communiation system service area, asynchronous mobile switching centre, IIF unit, synchronous mobile switching centre and the calling originating mobile communication terminal.

After this, when call terminations mobile communication terminal 10b makes response, Node B/the RNC that is connected with this call terminations mobile communication terminal 10b reports to asynchronous mobile switching centre 220 (BICC or ISUP ANSWER) (step S227) with it, and asynchronous mobile switching centre 220 sends down link access signal (MAP Forward Access SignalingReq) (step S228) to IIF unit 60.

Then, IIF unit 60 identification from the response of call terminations mobile communication terminal 10b and between synchronous mobile switching centre 320 transmitting systems response message (Intersystem Answer) (step S229).After this, synchronously mobile switching centre 320 reports to BTS/BSC 310 (Progress) (step S230) with the response of call terminations mobile communication terminal 10b, and between IIF unit 60 sends in response to system response message response message (Intersystem Answer Ack) (S231).

Response message comprises parameter as shown in Figure 21 between system, and these parameters comprise inner MSC circuit I D, MIN, ESN etc.

By processing procedure above-mentioned, mobile communication terminal is accomplished from the handing-over of state in synchronous mobile communication system of wait-for-response.Then, the call terminations mobile communication terminal is to making response from the calling of calling out the originating mobile communication terminal, begin to carry out thereby make to call out communicating by letter between originating mobile communication terminal and the call terminations mobile communication terminal, and make this calling after communicating by letter, be removed.The processing procedure of call disestablishment is identical with first execution mode, so omitted its detailed description here.

In the present embodiment, when moving to the synchronous service district from the asynchronous service district when being under the state of the response that wait makes calling at mobile communication terminal, RNC is to the request handing-over of asynchronous mobile switching centre, and asynchronous mobile switching centre judges that the handing-over of being asked is the handing-over between the contiguous emitter region or to the handing-over of synchronous mobile communication system in the asynchronous mobile communiation system.When judging that the handing-over asked is handing-over to synchronous mobile communication system, join by this way: when the IIF unit plays the effect of transducer, exchanging messages between mobile switching centre and the asynchronous mobile switching centre synchronously by using ISUP (sending protocol of messages between the mobile switching centre).Then, report that the mobile communication terminal that will join is in this situation of state of wait-for-response.

When finishing to the handing-over of synchronous mobile communication system and the call terminations mobile communication terminal is made when response to calling, asynchronous mobile switching centre has made response to IIF unit reporting call terminating mobile communication terminal.Then, the IIF unit is response message between asynchronous mobile switching centre transmitting system, thereby has reported that the call terminations mobile communication terminal made response to prompting.Then, handing-over is finished.

The 3rd execution mode

The 3rd execution mode of the present invention relate to a kind of in comprising the two mixed mobile communication system of asynchronous network and synchronizing network handing-over be in method to the mobile communication terminal of the prompting state of call terminations.

Hereinafter, be presented in the network with structure of introducing above in the service area that handing-over is in asynchronous mobile communiation system 20 with reference to Figure 22 and be in method the mobile communication terminal 10 of the prompting state of call terminations.

Figure 22 be used for graphic extension according to the 3rd execution mode of the present invention be in block diagram in handing-over between asynchronous network and the synchronizing network to the notion of the mobile communication terminal under the prompting state of call terminations, wherein mobile communication terminal comprises and calls out originating mobile communication terminal 10a and call terminations mobile communication terminal 10b.

When Node B/RNC 210 according to initiating to make call terminations mobile communication terminal 10b be in call terminations prompting state under by the calling of the calling originating mobile communication terminal 10a among the service area A that is in asynchronous mobile communiation system and call terminations mobile communication terminal 10b when moving among the service area B of overlapping service area C between synchronous and the asynchronous mobile communiation system or synchronous mobile communication system, call terminations mobile communication terminal 10b is to the Node B request handing-over of asynchronous mobile communiation system 20, and Node B joins to 220 requests of asynchronous mobile switching centre by RNC then.

Then, begin to carry out the handing-over of call terminations mobile communication terminal 10b between asynchronous mobile communiation system 20 and synchronous mobile communication system 30.When handing-over finish and asynchronous mobile switching centre 220 when mobile switching centre 320 interconnects by IIF unit 60 synchronously, the BTS/BSC 310 by synchronous mobile communication system 30 will initiate prompting and send to call terminations mobile communication terminal 10b by calling out calling that originating mobile communication terminal 10a produces.

For the mobile communication terminal that is in such prompting state to call terminations is joined, mobile communication terminal 10b periodically measures from the intensity of the signal of the serving node B of the current connection of mobile communication terminal 10b with from the intensity of the signal of the adjacent node B adjacent with serving node B, and measured intensity is reported to serving node B.In this case, Node B/RNC 210 with this report together with sending to asynchronous mobile switching centre 220 by the information of the detected contiguous emitter region of mobile communication terminal 10a, base station IDs etc.

Hereinafter, introduce handing-over in further detail with reference to Figure 23 and 24 and be in processing procedure the mobile communication terminal under the prompting state of call terminations.

Figure 23 and 24 graphic extensions are according to the flow chart that is in the processing procedure that the mobile communication terminal under the prompting state of call terminations is joined to synchronizing network from asynchronous network of the 3rd execution mode of the present invention.Asynchronous modem controller shown in Figure 23 and 24 and synchronous modem are the modulator-demodulators of call terminations mobile communication terminal 10b.

In the service area that is in asynchronous mobile communiation system 20 be in to the mobile communication terminal 10b under the prompting state of call terminations shift to the service area of synchronous mobile communication system 30 and be in the asynchronous mobile communiation system service area then and the synchronous mobile communication system service area between overlapping service area C in the time, mobile communication terminal 10b detects the signal from synchronous mobile communication system 30, periodically measure intensity, and measured intensity is reported to the current service Node B from the signal of the current service Node B of asynchronous mobile communiation system 20 and neighbor base station (Node B s).When the intensity from the signal of the current service Node B of the current connection of mobile communication terminal 10b was lower than predetermined value, mobile communication terminal 10b sent handover request message (IU-Reloc Required) (step S301) by RNC to asynchronous mobile switching centre 220.

Be actually the same in response to the continuous processing procedure (the step S301-S326 among Figure 23 and 24) that handover request joins and releasing connects according to the releasing connection requests then, so omitted their detailed description here with the processing procedure (the step S101-S126 among Fig. 3) of first embodiment of the invention.

But, in the 3rd execution mode of the present invention, when asynchronous mobile switching centre 220 in response to received handover request message when IIF unit 60 sends the asynchronous message (MAP Prep Handover Req) of request handing-over (step S302), extension container is added on the asynchronous message, then the asynchronous identifier (MSISDN) of this asynchronous message with mobile communication terminal 10b sent, and report mobile communication terminal 10b is in the prompting state to call terminations.In order to carry out this operation, must be included in the state that parameter in the handover request message (MAP Rrep HandoverReq) is expressed mobile communication terminal 10b by use.This message (MAP PrepHandover Req) comprises the parameter such as calling ID, Target Launch Zone ID, target radio network controller ID and MSISDN, as shown in Figure 6.

The handing-over Indication message (Facilities Directive2) that sends between IIF unit 60 and synchronous mobile switching centre 320 comprises the parameter such as charging ID, ESN, inner exchanging central circuit ID, MIN and transfer state, as shown in Figure 9.Especially, the parameter transfer state is that the representative mobile communication terminal is in the identifier to the prompting state of call terminations.And its response message (Facilities Directive2 Ack) comprises the parameter such as CDMA Channel data and CDMA Channel tabulation.

When being in when the handing-over of mobile communication terminal 10b in synchronous mobile communication system of the prompting state of call terminations finished by processing procedure above-mentioned, the calling originating mobile communication terminal in the asynchronous mobile communiation system service area, asynchronous mobile switching centre, IIF unit, set up calling between mobile switching centre and the call terminations mobile communication terminal synchronously.

After this, when call terminations mobile communication terminal 10b makes response, BTS/BSC 310 reports to synchronous mobile switching centre 320 (Connect) (step S327) with it, and synchronous mobile switching centre 320 response message (Intersystem Answer) between IIF unit 60 transmitting systems, thereby reporting call terminating mobile communication terminal 10b has made response (step S328).Then, IIF unit 60 sends to asynchronous mobile switching centre 220 and inserts signal (MAP Forward AccessSignaling Req), thereby report is from the response (step S329) of call terminations mobile communication terminal 10b.After this, the response message (Intersystem Answer Ack) of IIF unit 60 response message between synchronous mobile switching centre 320 sends in response to system (S330).

Response message between system (Intersystem Answer) comprises that parameter as shown in Figure 21, these parameters comprise inner MSC circuit I D, MIN, ESN etc.

By processing procedure above-mentioned, the handing-over of mobile communication terminal in synchronous mobile communication system that is in the prompting state of call terminations is accomplished.Then, the call terminations mobile communication terminal is to making response from the calling of calling out the originating mobile communication terminal, begin to carry out thereby make to call out communicating by letter between originating mobile communication terminal and the call terminations mobile communication terminal, and this calling is removed after communicating by letter.The processing procedure of call disestablishment is identical with first execution mode, so omitted its detailed description here.

In the present embodiment, when when mobile communication terminal is being in the prompting state of call terminations, moving to the synchronous service district from the asynchronous service district, RNC is to the request handing-over of asynchronous mobile switching centre, and asynchronous mobile switching centre judges that the handing-over of being asked is the handing-over between the contiguous emitter region or to the handing-over of synchronous mobile communication system in the asynchronous mobile communiation system.When judging that the handing-over asked is handing-over to synchronous mobile communication system, join by this way: when the IIF unit plays the effect of transducer, exchanging messages between mobile switching centre and the asynchronous mobile switching centre synchronously by using ISUP (sending protocol of messages between the mobile switching centre).Then, report that the mobile communication terminal that will join is in this situation of prompting state to call terminations.

Industrial applicibility

According to the present invention, in comprising the two mixed mobile communication system of asynchronous network and synchronizing network, when bimodulus DFS double frequency shift mobile communication terminal be in voice communication, wait for the response of calling out or under to the state of the prompting of call terminations when the service area of asynchronous mobile communiation system moves to the service area of synchronous mobile communication system, handing-over is to be used for by use that intercommunication collaborative work ability function (IIF) unit and the ISUP (agreement of message transfer between mobile switching centre) of switching signal carries out between asynchronous and synchronous mobile switching centre.Therefore, the present invention can provide high quality services, no matter which is mobile communication system be in generation.

And the present invention has prevented to make up asynchronous mobile communiation system on unnecessary big service area, and therefore can reduce the required investment of design asynchronous mobile communiation system.

Though the present invention is in conjunction with thinking tool practicality at present and preferred embodiment being introduced, but should be understood that, the present invention is not limited to disclosed execution mode and accompanying drawing, but opposite, be intended to contain the thought of claims and various transformations and the various change in the scope.

Claims

1. the method for a handing-over DBDM mobile communication terminal in comprising the two mixed mobile communication system of asynchronous mobile communiation system and synchronous mobile communication system, described asynchronous mobile communiation system comprises Node B, radio network controller and asynchronous mobile switching centre, described synchronous mobile communication system comprises the base station transceiver station, base station controller and synchronous mobile switching centre, described asynchronous mobile switching centre and synchronous mobile switching centre be by intercommunication collaborative work ability function (IIF) unit interconnective and they link to each other with two stack home location registers (D-HLR) separately, described mobile communication terminal can the two communicates with asynchronous mobile communiation system and synchronous mobile communication system, and this method may further comprise the steps:

(a) send handover request message in response to handover request to described asynchronous mobile switching centre by described radio network controller from described mobile communication terminal;

(b) send handover request message by described asynchronous mobile switching centre to described IIF unit;

(c) transmit user profile and receive user profile by described IIF unit requests from described D-HLR;

(d) send to described base station transceiver station/base station controller from described IIF unit to the described synchronous mobile switching centre transmission handing-over Indication message and the Indication message that will join from described synchronous mobile switching centre;

(e) send the response message that described handover request is made for mobile communication terminal allocation of downlink communication channel and by described base station transceiver station/base station controller to described synchronous mobile switching centre;

(f) send the response of described handing-over Indication message, send the response message of described handover request and between described synchronous mobile switching centre and described asynchronous mobile switching centre, trunk line is set to described IIF unit from described synchronous mobile switching centre from described IIF unit to described asynchronous mobile switching centre;

(g) send initial address message and receive response to described IIF unit by described asynchronous mobile switching centre, and the trunk line of finishing between described synchronous mobile switching centre and the described asynchronous mobile switching centre is set up;

(h) finish at the resource allocation of handing-over to described radio network controller report by described asynchronous mobile switching centre;

(i) join to described mobile communication terminal indication by Node B by described radio network controller;

(j) mode switch with described mobile communication terminal is a synchronous mobile switching centre connection mode;

(k) send the access signal by described IIF unit to described asynchronous mobile switching centre;

(l) by described mobile communication terminal by uplink communication channel to described base station transceiver station/base station controller transmit frame and lead code, thereby report handing-over is finished; With

(m) remove being connected between described asynchronous mobile communiation system and the described synchronous mobile communication system.

2. method according to claim 1, wherein said mobile communication terminal is under the voice communication state.

3. method according to claim 1, wherein said mobile communication terminal is in the state of the response that wait makes the calling of being initiated by this mobile communication terminal, and described handover request message and described handing-over Indication message comprise that the described mobile communication terminal of report is in the information of the state of wait-for-response.

4. method according to claim 3, described method is further comprising the steps of:

(n) when a call terminations mobile communication terminal is made response, report the connection of described call terminations mobile communication terminal to described IIF unit by described asynchronous mobile switching centre;

(o) by described IIF unit between described synchronous mobile switching centre transmitting system response message and by described synchronous mobile switching centre to base station transceiver station/base station controller reporting call terminating mobile communication terminal made the response and be connected with described synchronous mobile switching centre; With

(p) by the described synchronous mobile switching centre response signal that response message is made between described IIF unit sends system.

5. method according to claim 1, wherein said mobile communication terminal is in the prompting state to call terminations, and described handover request message and described handing-over Indication message comprise that the described mobile communication terminal of report is in the information to the prompting state of call terminations.

6. method according to claim 3, described method is further comprising the steps of:

(q) when being in, report the connection of described mobile communication terminal to described synchronous mobile switching centre by described base station transceiver station/base station controller to the response of the described mobile communication terminal under the prompting state of call terminations;

(r) from described synchronous mobile switching centre between described IIF unit transmitting system response message and by described IIF unit to described asynchronous mobile switching centre report described mobile communication terminal to prompting made the response and be connected with described synchronous mobile switching centre; With

(s) from the described IIF unit response signal that response message is made between described synchronous mobile switching centre sends system.

7. according to any one described method in the claim 1 to 6, wherein step (f) may further comprise the steps:

Send initial address message (IAM) from described asynchronous mobile switching centre to described IIF unit, this IAM is an isup message; And

Send the address from described IIF unit to described asynchronous mobile switching centre and finish message (ACM), this ACM is an isup message.

8. according to any one described method in the claim 1 to 6, wherein step (m) may further comprise the steps:

Finish to the report handing-over of described synchronous mobile switching centre by described base station transceiver station/base station controller, and finish to the report handing-over of described IIF unit by described synchronous mobile switching centre;

Remove to the request of described asynchronous mobile switching centre by described IIF unit and to connect and by using isup message to report being connected between described synchronous mobile switching centre and the described mobile communication terminal; With

Remove being connected between described asynchronous mobile switching centre and the described Node B/radio network controller.

9. according to any one described method in the claim 1 to 6, wherein the handover request message in the step (a) comprises the parameter that comprises the message of using in the synchronous mobile communication system relevant with handing-over, contiguous emitter region information, neighbor base station information, type of message, type of handover, handing-over reason, source base station controller ID, target base station controller ID, wireless access operator (RAB) information and wireless region related information.

10. method according to claim 9, wherein said asynchronous mobile switching centre with reference to the contiguous emitter region information of described mobile communication terminal and neighbor base station information judge the handing-over of being asked be close in the asynchronous mobile communiation system between the emitter region handing-over or to the handing-over of described synchronous mobile communication system.

11. according to any one described method in the claim 1 to 6, wherein, in step (b), described asynchronous mobile switching centre sends the asynchronous ID numbers (MSISDN) of described mobile communication terminal with described handover request message.

12. according to any one described method in the claim 1 to 6, wherein the described user profile that receives from D-HLR by described IIF unit comprise described mobile communication terminal synchronization identifier (MIN, ESN).

13. according to any one described method in the claim 1 to 6, wherein, in step (c), user profile is asked to transmit by using one of synchronization message and asynchronous message in described IIF unit.

14. according to any one described method in the claim 1 to 6, wherein said IIF unit was producing charging ID and this charging ID and inner exchanging central circuit ID (InterMSCCiruitID) is being inserted in the handing-over Indication message that is sent before described synchronous mobile switching centre sends the handing-over Indication message, described charging ID comprises the ID of the synchronous mobile switching centre that described asynchronous mobile switching centre will be connected to.

15. according to any one described method in the claim 1 to 6, the handover request message that wherein sends to described synchronous mobile switching centre from described IIF unit comprises the parameter that comprises charging ID, ESN, inner exchanging central circuit ID and MIN, and comprises the parameter that comprises CDMA Channel data and CDMA Channel tabulation from the response message that described synchronous mobile switching centre sends to described IIF unit.

16. according to any one described method in the claim 1 to 6, wherein, in step (h), finish the RAB tabulation that message comprises type of message, RRC container and will remove from the resource allocation that described asynchronous mobile switching centre sends to radio network controller.

17. according to any one described method in the claim 1 to 6, wherein said access signal comprises the radio resource information of calling ID, Application Protocol Data Unit (APDU) and selecting.

18. according to any one described method in the claim 1 to 6, wherein, finished after described handing-over and described call terminations mobile communication terminal make the step of response in described calling originating mobile communication terminal, when the call release request that receives from described calling originating mobile communication terminal or described call terminations mobile communication terminal, described asynchronous mobile switching centre sends request to described IIF unit and removes the trunk line connection between the asynchronous and synchronous mobile switching centre and call out the message that is connected, and described IIF makes response to this message in the unit, thereby makes the trunk line between the asynchronous and described synchronous mobile switching centre obtain removing.

19. method according to claim 18, the parameter that the message that wherein said request call disestablishment connects comprises and comprises inner exchanging central circuit ID, removes reason, charging ID and MIN, and the response message that the message that the request call disestablishment connects is made comprises charging ID.