CN1199514C

CN1199514C - Method of realzing GSM and CDMA network information inter communication

Info

Publication number: CN1199514C
Application number: CN 02104295
Authority: CN
Inventors: 孟广斌; 丁浩; 王金城
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2002-03-01
Filing date: 2002-03-01
Publication date: 2005-04-27
Anticipated expiration: 2022-03-01
Also published as: AU2002323778A1; WO2003075592A1; CN1443016A

Abstract

The present invention discloses a method for realizing the signaling intercommunication of a GSM network and a CDMA network. Firstly, network connection is established between a home location register GSM-HLR of a GSM network and a home location register CDMA-HLR of a CDMA network, and signing contract information is respectively preserved in HLRs of both parties for a mobile phone subscriber supporting double type. The configuration for bipartite network data is added in network nodes of the entire network, and an inner communication protocol between the GSM-HLR and the CDMA-HLR at the time of cross-network roaming of a mobile phone subscriber is formulated. Except necessary gateway equipment, any other network entities do not need extra adding for the implementation of the present invention, and complicated signaling conversion is not carried out. The present invention has the advantage of small implementation difficulty, and can widely support services of most subscribers. Data services after cross-network are partially supported.

Description

A kind of method that realizes GSM and cdma network signalling interworking

Technical field

The present invention relates to mobile communication technology, relate in particular to the method for a kind of GSM of realization (global system for mobile communications) and CDMA (CDMA mobile communication systems) network information intercommunication.

Background technology

At present the prevailing GSM net of field of mobile communication and gradually the CDMA net of rise be relatively independent, promptly the GSM network users can not be enjoyed the service that CDMA provides, the CDMA network users can not be enjoyed the service that GSM provides.To call out the blind area in order reducing, to improve the utilance of network, realize that mobile subscriber's seamless roam between the two nets of CDMA/GSM just becomes the task that field of mobile communication need solve.One of necessary condition of two net seamless roams is that mobile phone can be supported CDMA and GSM standard simultaneously, and can select CDMA or GSM function according to the standard of current network, its core component bimodulus SIM (identification module) card has had total solution.And at two network roamings of network side solution in core-network side, mainly contain the network interworking unit IIF (Interoperability and Interworking Function) that the CDMA normal structure proposes at present, the basic principle of this scheme is by increase the network interworking unit between CDMA net and GSM net, finish the mutual conversion of CDMAANSI41 (American National Standard Institute ANSI) standard and GSM MAP (GSM net MAP) signaling, thereby realize authentication the roamer, the support of calling and short message etc.According to the implementation of this method after a GSM user roams into cdma network be: dual-mode handset at first from the GSM mode switch to the CDMA pattern, carry out service interaction with CDMA standard signaling and network, this moment IIF to be responsible for CDMA message instruction transformation be GSM instruction, submit to GSM-HLR (attaching position register of GSM net) to handle, on the other hand, the instruction transformation of being responsible for again GSM-HLR is the CDMA instruction, submits the mobile subscriber to.This moment, the IIF system plays the effect of CDMA-HLR (CDMA net attaching position register) for the mobile subscriber, for GMS-HLR, plays mobile switching centre's effect of virtual attaching position register of holding concurrently.

Above method is to carry out complicated signaling translation by IIF, makes the mobile subscriber only just can realize two internetwork roamings with the sets of data in GSM subscription data or the CDMA subscription data.This scheme has tentatively solved the unidirectional roaming problem of CDMA to GSM at present, but also there is following shortcoming in itself:

1) this method need be set up the IIF network entity separately in network, and its performance will be competent at signaling conversion work miscellaneous between GSM and the CDMA;

2) influence to operational system is bigger, because the standard call flow process of GSM and CDMA is inconsistent, in order to realize two network roamings, requires existing GSM/CDMA standard agreement is adjusted, and it is big to implement difficulty, and the cycle is long, and destabilizing factor is also many;

3) support to non-basic class business is relatively more difficult, because the IIF solution is to translate by the signaling between two nets, be not difficult to realize for the support of the most basic authentication business, speech business, but the new business that constantly changes, increases for telecommunication market, such as IN service, data service etc., its mechanism widely different in heterogeneous networks, IIF is difficult to follow the tracks of upgrading and realizes complete signaling conversion, and the two nets of traffic affecting are compatible;

For these reasons, the agreement major part of IIF scheme still is in the exposure draft stage, also has certain distance from practical application.

Summary of the invention

The object of the present invention is to provide a kind of by between the attaching position register of GSM and CDMA net, setting up the method that internal communication mechanism realizes signalling interworking.

For achieving the above object, the technical solution used in the present invention is: a kind of method that realizes GSM and cdma network signalling interworking, at first, setting up network between the attaching position register GSM-HLR of GSM net and attaching position register CDMA-HLR that CDMA nets is connected, respectively preserve a subscription data respectively for the mobile phone user who supports double-mode in GSM-HLR and CDMA-HLR, the mobile subscriber number in two parts of subscription data is transferred number each other; And the internal communication agreement between GSM-HLR and CDMA-HLR when formulating mobile phone user's across-network roaming, in the user contracting data of both sides HLR, increase the dynamic marks position that is used for the current region of identifying user attribute and be used for the transferred number territory of recording user, and in the whole network network node, increase configuration the bipartite network data at the bipartite network transferred number; In GSM-HLR and the inner MAP MAP of CDMA-HLR signaling process flow process, increase processing then, comprising above-mentioned internal communication agreement and dynamic marks position:

In the registering flow path of position, increase the process that sends place network roaming state to non-place network; In getting called positional information flow process, increase judgement to the current place of user network, if the place network is a major network, described major network is meant in the CDMA net for the user place of the GSM net at the user place of visit GSM-HLR or visit CDMA-HLR, by normal flow the roaming number that place serving mobile switching center MSC feeds back is fed back to gateway MSC GMSC, if the place network is auxilliary net, described auxilliary net is meant in the GSM net for the user place of the CDMA net at the user place of visit GSM-HLR or visit CDMA-HLR, then with the major network mobile subscriber number of transferred number territory record, feed back to GMSC by CDMA or the GSM user's temporary number of getting the service MSC feedback that called position response message will receive.

Owing to adopt above technical scheme to realize GSM and cdma network signalling interworking, it is implemented in the network except the gateway device of necessity, need not additionally to increase other any network entity, and the signaling of not carrying out complexity is changed, keep existing C DMA and GSM signaling protocol, the enforcement difficulty is little, can extensively support most of customer services, goes back the data service after part is supported inter-network.

Description of drawings

Fig. 1 is the inventive method overall plan schematic diagram;

Fig. 2 is a registering flow path schematic diagram in position in the inventive method;

Fig. 3 is a travelling carriage inter-network called flow schematic diagram in the inventive method embodiment;

Embodiment

With reference to Fig. 1, basis of the present invention and core are to set up network to be connected between the attaching position register GSM-HLR of GSM net and attaching position register CDMA-HLR that CDMA nets, respectively preserve a subscription data respectively for the mobile phone user who supports double-mode in GSM-HLR and CDMA-HLR, the mobile subscriber number in two parts of subscription data is transferred number each other; The essence of this method is to set up the virtual HLR that has GSM-HLR and CDMA-HLR function concurrently by physical channel and internal communication mechanism, and the hardware system of each HLR wherein and signaling point code separately remain unchanged.Virtual HLR is still followed the GSM standard signaling to the interface of GSM network, and the interface of cdma network is also followed CDMA standard signaling.Be to guarantee transmitting speed and fail safe, set up network between GSM-HLR and the CDMA-HLR and be connected and adopt private-line mode that transmission rate should be selected more than the 2M byte per second.On the basis that makes up virtual HLR, formulation moves the internal communication agreement between GSM-HLR and CDMA-HLR when deciding mobile phone user's across-network roaming, in the user contracting data of both sides HLR, increase the dynamic marks position that is used for the current region of identifying user attribute and be used for the transferred number territory of recording user at the bipartite network transferred number, and in the whole network network node, increase configuration to the bipartite network data, moving exchanging center MSC as gateway device for example shown in Figure 1, and Signalling Transfer Point STP etc.; In GSM-HLR and the inner MAP MAP of CDMA-HLR signaling process flow process, increase processing then, comprising above-mentioned internal communication agreement and dynamic marks position:

In the registering flow path of position, increase the process that sends place network roaming state to non-place network; In getting called positional information flow process, increase judgement to the current place of user network, if the place network is a major network, by normal flow the roaming number that place serving mobile switching center MSC feeds back is fed back to gateway MSC GMSC, if the place network is auxilliary net, then, feed back to GMSC by getting called position response message with the major network mobile subscriber number of transferred number territory record.

Internal communication agreement between described GSM-HLR and the CDMA-HLR comprises roaming state notification message and response message thereof, gets called route advertisement message and response message thereof;

The inner MAP signaling process of GSM-HLR flow process comprises:

1) location registers flow process: after GSM-HLR receives the position register request of two network roaming mobile phones by the GSM-MSC of the mobile switching centre initiation of GSM net, the record current roaming position, again the user is recorded in the dynamic marks position at the roaming state of GSM net, and to CDMA-HLR transmission roaming state notification message, the current roaming state in GSM-HLR of notice this user of CDMA-HLR; After receiving the roaming state response message of CDMA-HLR, issue CAMEL-Subscription-Information to mobile phone location service MSC again;

2) to the response of roaming state notification message: after GSM-HLR receives the roaming state notification message that CDMA-HLR sends, according to the roaming state parameter in the message user roaming state is recorded in the dynamic marks position, then to CDMA-HLR feedback roaming state response message;

3) get called positional information flow process: GSM-HLR and receive the message of getting called position that GMSC sends after, roaming state parameter among the HLR is judged, if the user is current at the GSM network, then send and get the roaming number instruction to called place service MSC, receive GSM user's temporary number of service MSC feedback as GSM-HLR after, feed back to GMSC by getting called position response message; If the user is current at cdma network, then, feed back to GMSC by getting called position response message with the CDMA mobile subscriber number of transferred number territory record;

The inner MAP signaling process of CDMA-HLR flow process comprises:

1) location registers flow process: after CDMA-HLR receives the position register request of two network roaming mobile phones by the CDMA-MSC of the mobile switching centre initiation of CDMA net, the record current roaming position, again the user is recorded in the dynamic marks position at the roaming state of CDMA net, and to GSM-HLR transmission roaming state notification message, the current roaming state in CDMA-HLR of notice this user of GSM-HLR; After receiving the roaming state response message of GSM-HLR, issue CAMEL-Subscription-Information to mobile phone location service MSC again;

2) to the response of roaming state notification message: after CDMA-HLR receives the roaming state notification message that GSM-HLR sends, according to the roaming state parameter in the message user roaming state is recorded in the dynamic marks position, then to GSM-HLR feedback roaming state response message;

3) get called positional information flow process: CDMA-HLR and receive the message of getting called position that GMSC sends after, the roaming state parameter among the HLR is judged, if the user is current at cdma network, feed back to GMSC by getting called position response message; If the user is current at the GSM network, then, feed back to GMSC by getting called position response message with the GSM mobile subscriber number of transferred number territory record;

Below with reference to Fig. 2, entering the CDMA service area with travelling carriage from the GSM service area is example, further specifies the present invention program's location registers flow process:

Step 1: the user initiates CDMA normal place registration request with CDMA-IMSI (IMSI International Mobile Subscriber Identity) to the virtual HLR that is made up by GSM-HLR and CDMA-HLR;

Step 2: virtual HLR utilizes CDMA-HLR receiving position request message, and carries out canceling position by inside story notice GSM-HLR;

After step 3:GSM-HLR received the internal state notice signaling, MSC and VLR sent standard GSM canceling position message;

Step 4: the execution result of cancelling message according to the GSM signaling feedback position of standard;

Step 5:GSM-HLR is to CDMA-HLR feedback states execution result;

Step 6:CDMA-HLR issues the service item inventory with CDMA standard signaling format.

Below in conjunction with the concrete application of the explanation of the called flow after mobile subscriber's inter-network shown in Figure 3 present embodiment, wherein travelling carriage 1 is called out travelling carriage 2 at the GSM net with the GSM mobile subscriber number of travelling carriage 2, and at this moment, travelling carriage 2 roams into the CDMA net.

Step 11: travelling carriage 1 is after the GSM net makes a call with the GSM mobile subscriber number of travelling carriage 2, and the GSM-HLR of GSM-MSC in the ownership HLR of travelling carriage 2 initiates the GSM route acquisition instruction of standard;

Step 12:GSM-HLR is not at the GSM service area by this user of roaming state sign position judgement at first but in the CDMA service area, then user's CDMA mobile subscriber number is submitted to GSM-MSC as transferred number;

Step 13:GSM-MSC judges that transferred number is the CDMA number, then speech channel is routed to Gateway MSC;

After step 14:CDMA Gateway MSC is analyzed,, initiate fetch bit to travelling carriage 2 ownership HLR and put message by the standard CDMA flow process;

Step 15:CDMA-HLR sends the route acquisition instruction to the service MSC of travelling carriage 2;

Step 16: the service MSC of travelling carriage 2 returns to CDMA-HLR with the roaming number of CDMA form;

Step 17:CDMA-HLR feeds back to Gateway MSC with the roaming number of CDMA form;

Step 18: Gateway MSC is established to the route of CDMA-MSC according to the roaming number of CDMA form.

In the inventive method is implemented, also can the transferred number of the mobile subscriber number of net as major network will be assisted.

Claims

1, a kind of method that realizes GSM and CDMA network signaling intercommunication, it is characterized in that: at first, set up network connection between the home location register GSM-HLR of GSM network and the home location register CDMA-HLR of CDMA network, for supporting dual Mobile phone users in the GSM-HLR and CDMA-HLR respectively save a copy of subscription data, and the mobile user numbers in the two subscription data are each other’s forwarding numbers; In the internal communication protocol with CDMA-HLR, the dynamic identification bit used to identify the attribute of the area where the user is currently located and the forward-to-number field used to record the forward-to-number of the user in the other party's network are added to the user subscription data of both HLRs. And increase the configuration of the other party's network data in the network nodes of the whole network; then increase the processing of the above-mentioned internal communication protocol and dynamic identification bit in the MAP signaling processing flow of the internal mobile application part of GSM-HLR and CDMA-HLR, including:

In the location registration process, the process of sending the roaming status of the network to the non-local network is added; in the process of obtaining the called location information, the judgment of the user's current network is added. If the network is the main network, the main network refers to the network for access In the GSM network where the GSM-HLR user is located or the CDMA network where the user accessing CDMA-HLR is located, the roaming number fed back by the serving mobile switching center MSC is fed back to the gateway mobile switching center GMSC according to the normal process. If the network where the network is located is a secondary network , the secondary network refers to the CDMA network where the user accessing the GSM-HLR is located or the GSM network where the user accessing the CDMA-HLR is located, then the main network mobile subscriber number recorded in the forwarding number field is obtained by getting the called location The response message is fed back to GMSC.

2. The method for realizing signaling intercommunication between GSM and CDMA network as claimed in claim 1, characterized in that: the internal communication protocol between the GSM-HLR and the CDMA-HLR includes a roaming status notification and a response message thereof;

GSM-HLR internal MAP signaling processing flow includes:

1) Location registration process: When GSM-HLR receives the location registration request initiated by the mobile switching center GSM-MSC of the GSM network when the dual-network roaming mobile phone, record the current roaming location, and then record the roaming status of the user in the GSM network to the dynamic identification bit, and send a roaming status notification message to CDMA-HLR to inform CDMA-HLR of the current roaming status of the user in GSM-HLR; Issue signing information;

2) Response to the roaming status notification message: after the GSM-HLR receives the roaming status notification message sent by the CDMA-HLR, the roaming status of the user is recorded in the dynamic identification bit according to the roaming status parameter in the message, and then sent to the CDMA-HLR Feedback roaming status response message;

3) Get the called location information process: After receiving the message of getting the called location sent by the GMSC, the GSM-HLR judges the roaming status parameter in the HLR, and if the user is currently in the GSM network, then sends the message to the called service MSC Get the roaming number command, when GSM-HLR receives the GSM user temporary number fed back by the serving MSC, it will feed back to the GMSC through the response message of getting the called location; if the user is currently in the CDMA network, the CDMA mobile user recorded in the forwarding number field The number is fed back to the GMSC by fetching the called location response message;

CDMA-HLR internal MAP signaling processing flow includes:

1) Location registration process: When the CDMA-HLR receives the location registration request initiated by the dual-network roaming mobile phone through the mobile switching center CDMA-MSC of the CDMA network, it records the current roaming location, and then records the roaming status of the user in the CDMA network to the dynamic identification bit, and to the GSM-

The HLR sends a roaming status notification message to notify the GSM-HLR of the user's current roaming status in the CDMA-HLR; after receiving the roaming status response message from the GSM-HLR, it sends the subscription information to the serving MSC where the mobile phone is located;

2) Response to the roaming status notification message: after the CDMA-HLR receives the roaming status notification message sent by the GSM-HLR, the roaming status of the user is recorded in the dynamic identification bit according to the roaming status parameter in the message, and then sent to the GSM-HLR Feedback roaming status response message;

3) Get the called location information flow: After CDMA-HLR receives the message of getting the called location sent by the GMSC, it judges the roaming state parameter in the HLR, if the user is currently in the CDMA network, the response message will The received temporary number of the CDMA user fed back by the serving MSC is fed back to the GMSC; if the user is currently in the GSM network, the GSM mobile user number recorded in the forwarded-to number field is fed back to the GMSC by fetching the called location response message;

3. The method for realizing signaling intercommunication between GSM and CDMA networks according to claim 1 or 2, characterized in that: the mobile subscriber number of the auxiliary network and the mobile subscriber number of the main network are mutual forwarding numbers.

4. The method for realizing GSM and CDMA network signaling intercommunication as claimed in claim 1, characterized in that: said network is established between the home location register GSM-HLR of the GSM network and the home location register CDMA-HLR of the CDMA network The connection adopts a dedicated line.