CN1658697A

CN1658697A - Communication method

Info

Publication number: CN1658697A
Application number: CN 200410005659
Authority: CN
Inventors: 杨波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2004-02-21
Filing date: 2004-02-21
Publication date: 2005-08-24
Anticipated expiration: 2024-02-21
Also published as: CN100551147C

Abstract

This invention relates to a communication method of the mobile communication system, and discloses a communication method without changing the primary telephone number after moving the telephone, that makes it be able to realize the service of retaining the number without changing number, but just simply alter the network without adding any adscititious equipment, that can reduce the wastage of relay resource. This kind of communication method includes the following steps: A. the calling user sends the message of requesting to gain the called user MSRN to the first HLR through the first MSC; B. the first HLR judges whether the called user is telephone-moving user according to the signed byte. If it is, send the message of requesting to gain the called user MSRN to the second HLR according to the registered HLR address; C. the second HLR gains the called user's MSRN from the called user's present VMSC, and sends the MSRN to the first HLR; D. the first HLR sends the MSRN to the first MSC.

Description

Communication means

Technical field

The present invention relates to the communication means of mobile communication system, particularly the communication means after the mobile user affiliation position transfer in the mobile communication system.

Background technology

Number portability (Mobile Number Portable is called for short " MNP ") is after user's telephone number changes, still can be by a kind of business of original telephone number contact.

For the fixed telephone subscriber, when user or telecommunication department because certain reason position move, when contact method changes, use this business can guarantee that original contact method is still available, thereby avoid all inconvenience and the loss that the user are caused because of telephone number changing.

On the other hand, to the mobile subscriber, MNP allows the user to change its home network in same country or changes its ownership place in consolidated network inside, but need not change the international ISDN(Integrated Service Digital Network) number of original travelling carriage (Mobile Station Integrated Services Data Network Number, be called for short " MSISDN "), new network will distribute new international mobile subscriber identity (InternationalMobile Subscriber Identity is called for short " IMSI ") to give MNP user.Handle the user of MNP, its all business all no longer are subjected to the network of old section or the influence of ownership place in the past, provide and change by new signatory network or new ownership place.During number before other users are as calling MNP user telephone-moving, system can initiatively become the number translation of calling out the new digit after the telephone-moving, and continues; As MNP user during as other users of calling, system also can become the number translation after the telephone-moving number before the telephone-moving to continue.

Realize that at present MNP mainly contains two kinds of schemes.

First kind of MNP solution that scheme is a landline telephone.Specifically, this scheme adopts Service Switching Point (Service Switching Point, be called for short " SSP ") and service control point (ServiceControlling Point is called for short " SCP ") number portable of formation (Number Portable is called for short " NP ") platform.Wherein SSP is the operation exchange platform of system, can adopt programmable switch, mainly finishes CCF, Service Switching Function and Call Control Access Function.SCP plays a part management, control and handles MNP in whole NP platform, finish service management function, service control function and service data function.Described service management function is used for the management service build environment, SMAP is professional loads; Service control function mainly is responsible for the access of the calling of service logic, SSP; The main management data of service data function.Specific implementation can be disclosed with reference on December 13rd, 2000, and application number is 00117205.0, and denomination of invention is the patent application of " communication system and the communication means that do not change original telephone number after the permission telephone-moving ".

Second kind of scheme is the MNP solution that Office of the Telecommunications Authority, Hong Kong provides.This scheme is by setting up a data library facilities in network, be used for store M NP user before telephone-moving information and the information after the telephone-moving.The user becomes when contracting MNP user, need register in database facility.When MNP user does when called, at first according to the database in the call number requester network, find the information before user's telephone-moving, by the mapping relations of information before MNP user's telephone-moving and after the telephone-moving, return the information after user's telephone-moving, thereby set up being connected of caller and MNP user.

In actual applications, there is following problem in such scheme: for first kind of scheme, and the flow process more complicated of processing, cost is higher.

For second kind of scheme, when the user more for a long time, the restriction of database facility self capacity and performance will become restriction, and causes the relay resource waste because route is circuitous, cost is also higher in addition.

Cause the main cause of this situation to be, the realization of first kind of scheme must have the intervention of intelligent platform (SSP and SCP) to realize, causes flow process to be responsible for, and needs additional equipment in addition, causes cost higher.This scheme does not take into full account the characteristics of mobile service, does not make full use of existing equipment in the mobile communication system.

Second kind of scheme newly established a data library facilities in network, each mobile switching centre during visit (Mobile Switching Center is called for short " MSC ") all will arrive the database facility data query, causes database itself to become bottleneck.Owing to need additional equipment, cause realizing the increase of cost.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of communication means, makes only network to be transformed simply and need not increase additional equipment newly and just can realize not reversion business of telephone-moving, reduces relay resource consumption.

For achieving the above object, the invention provides a kind of communication means, comprise following steps:

A calling subscriber sends the message that requires to obtain called subscriber's mobile station roaming number by first mobile switching centre to first attaching position register;

Described first attaching position register of B judges according to flag bit whether described called subscriber is the telephone-moving user, if then require to obtain the message of described called subscriber's mobile station roaming number to the transmission of second attaching position register according to the attaching position register address of registration;

Described second attaching position register of C obtains described called subscriber's mobile station roaming number from the visited mobile switching center at the current place of described called subscriber, and this mobile station roaming number is sent to described first attaching position register;

Described first attaching position register of D sends to described first mobile switching centre with described mobile station roaming number.

The described mobile station roaming number that the use of described first mobile switching centre of E is received is called out and is conversed.

Wherein, described step C also further comprises following substep:

C1 judge described first attaching position register whether with described second attaching position register in same network, if not then before described second attaching position register sends to the mobile station roaming number of described first attaching position register, adding network prefix;

Described step D also further comprises following substep:

When D1 receives the mobile station roaming number that has described network prefix when described first attaching position register, described mobile station roaming number is sent to described first mobile switching centre together with described network prefix.

Among the described step C1, according to the global title of described first attaching position register or signaling point code judge described second attaching position register whether with described first attaching position register in same network.

First mobile switching centre described in the described steps A is to send the routing iinformation request message to described first attaching position register transmission.

First attaching position register described in the described step B is to send the routing iinformation request message to described second attaching position register transmission.

Among the described step C, described second attaching position register also sends described called subscriber's CAMEL-Subscription-Information or transferred number to described first attaching position register.

When described first attaching position register and described second attaching position register are in same network, also comprise following steps:

After described mobile station roaming number from described first attaching position register is received by described first mobile switching centre, send the initial address message that has described mobile station roaming number to described visited mobile switching center;

Described visited mobile switching center responds described initial address message, finishes message and response message to the described first mobile switching centre return address.

When described first attaching position register and described second attaching position register are not in same network, also comprise following steps:

After the described mobile station roaming number that has described network prefix from described first attaching position register is received by described first mobile switching centre, send the initial address message that has described network prefix and mobile station roaming number to GMSC (gateway mobile switching center);

Described GMSC (gateway mobile switching center) responds described initial address message, sends the initial address message that has described mobile station roaming number to described second attaching position register according to described network prefix;

Described second attaching position register is finished message and response message to described GMSC (gateway mobile switching center) return address;

Described GMSC (gateway mobile switching center) is transmitted described address to described first mobile switching centre and is finished message and response message.

When described called subscriber once more during telephone-moving to the three ownership location registers, comprises following step in no particular order from described second attaching position register:

The described called subscriber's of registration CAMEL-Subscription-Information in described the 3rd ownership location register;

The attaching position register address of registering in described first attaching position register is revised as the address of described the 3rd ownership location register;

Delete the CAMEL-Subscription-Information of called subscriber described in described second attaching position register.

By relatively finding, technical scheme difference with the prior art of the present invention is, by revising the data of storing among the original signatory HLR, expands the message interface between the new and old HLR, make to obtain user's data among the new HLR by old HLR when calling out, thereby realize MNP.

Difference on this technical scheme has brought comparatively significantly beneficial effect, has promptly made full use of the existing equipment in the mobile communication system, realize the MNP function by the minor modifications on existing equipment, need not to add new equipment, significantly reduced development workload, saved cost.Because only changed the process of some Signalling exchanges, therefore reduced taking of relay resource at existing circuit.

Description of drawings

Fig. 1 is a MNP service groups web frame sketch according to an embodiment of the invention;

Fig. 2 is that the message related to calls that MNP user does when called in the net according to an embodiment of the invention is transmitted schematic diagram;

Fig. 3 is that the message related to calls that inter-network MNP user according to an embodiment of the invention does when called is transmitted schematic diagram.

Embodiment

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

Shown in Figure 1 is MNP service groups web frame sketch according to an embodiment of the invention.As shown in the figure, this structure is mainly by attaching position register (Home Location Register, be called for short " HLR ") 10, HLR20, GMSC (gateway mobile switching center)/tandem exchange of mobile switching centre (Gateway MobileSwitching Center/Tandom Mobile Switch Center, be called for short " GMSC/TMSC ") 30, GMSC/TMSC40 and visited mobile switching center (Visited Mobile Switching Center is called for short " VMSC ") 50, VMSC60 form.

HLR10, HLR20 are used to store user position information.In the present embodiment, HLR10 storage be information before the telephone-moving, the HLR20 storage be information after the telephone-moving.The present invention is by making amendment to canned data among the HLR10, remove all supplemental services and CAMEL-Subscription-Information, and the function of expansion HLR10, add the address of NP sign and HLR20, make the VMSC50 at calling subscriber place when HLR10 inquires about, can be transferred to HLR20 automatically, perhaps obtain up-to-date user contracting data and feed back to VMSC50 from HLR20 automatically.If the function by expansion HLR10 can not realize and the interconnection of HLR20 that the gateway that can increase a similar GMSC is as relaying.Need to prove that the information of user registration is divided into two classes: a kind of is the priority such as Subscriber Number, travelling carriage number, access, predetermined type of service and the permanent parameter the security parameter; Another kind is interim, can be at any time updated parameters, for example the active user present position has a related parameter.For the relevant parameter in above-mentioned active user present position, in the time of outside the user roams into the zone that HLR serves, HLR needs registered user's new location information, in the time of can guaranteeing that the calling subscriber calls out the mobile subscriber like this, all can know its current location information, thereby set up communication link by this mobile subscriber's local HLR.

GMSC/TMSC30, GMSC/TMSC40 are used to system that the interface that connects other public communication network is provided, system and public switched telephone network (Public Switched Telephone Network for example, abbreviation " PSTN "), ISDN(Integrated Service Digital Network) (Integrated Services Data Network, abbreviation " ISDN "), public data network (Public Data Network, be called for short " PDN ") interface between waiting, guarantee that the user shifts between heterogeneous networks and roam procedure in the no gap of realization serve; It also provides the interface that links to each other with other GMSC, VMSC, MSC with HLR simultaneously; The function that has inquiring position information in addition, if mobile terminated the time network can not inquire about this user's HLR, then need will call out then by GMSC/TMSC30, GMSC/TMSC40 inquiry

Transfer to mobile gateway office, finish the routing function of other network users when calling out, and continue between netting and inter-network settlement etc.

VMSC50, VMSC60 are the functional nodes of core network-circuit switched domain, link to each other with external network (PSTN, ISDN, PDN etc.) by the PSTN/ISDN interface, link to each other with HLR10, HLR20 by C interface, link to each other with other VMSC or short message service center's (Short Message Center is called for short " SMC ") by E interface.Its main outer function provides the functions such as call proceeding, mobile management, authentication and encryption of circuit commutative field.Above-mentioned C interface is the interface between MSC and the HLR, the roaming number of mobile client is obtained in the transmission telephone-moving that is used to finish called mobile client information, above-mentioned E interface is the interface between MSC, adopts the No. 7 signalling of 24 codings, is used for keeping conversing continuously and carrying out inter-office switchover.

Need to prove, be that circuit is connected in Fig. 1 between GMSC/TMSC30 and the VMSC50, between GMSC/TMSC30 and the GMSC/TMSC40, between GMSC/TMSC40 and the VMSC60; Between HLR10 and the GMSC/TMSC30, between HLR10 and the VMSC50, between HLR10 and the HLR20, between HLR20 and the GMSC/TMSC40, be that signaling is connected between HLR20 and the VMSC60.

The effect and the annexation of the various piece in the MNP service groups web frame sketch that the present invention proposes have above been introduced.To further specify the concrete processing procedure when called below as MNP user.

When other customer calls MNP user, at first call information is sent to GMSC/TMSC30, the original HLR10 of GMSC/TMSC30 inquiry MNP user, because the operator revises the original HLR10 of MNP, when having access to HLR10, it can transfer to new HLR20 automatically, be connected to VMSC60 by HLR20, VMSC60 obtains MNP user's current roaming number, then response message is turned back to HLR10 by HLR20, finally arrives GMSC/TMSC30.GMSC/TMSC30 sends the initial address message (Initial Address Message is called for short " IAM ") have MNP user's roaming number after to the information via analysis that receives and gives VMSC60, and VMSC60 connects MNP user according to number, finishes speech channel and continues.

Fig. 2 is that the message related to calls that MNP user does when called in the net according to an embodiment of the invention is transmitted schematic diagram.Calling subscriber and MNP user are in the same net among this embodiment.As shown in the figure, mainly contain four module: MSC21, HLR22, HLR23, VMSC24 in this structure.

At first the user as caller sends IAM/Setup request message 201 to the MSC21 that is connected with the calling subscriber, includes the original number of called MNP user in this message.

MSC21 is through to the simple process of message related to calls, the HLR of query call number, find the original attaching position register HLR22 of MNP user after, send routing iinformation (Send RoutingInformation is called for short " SRI ") request message 202 to HLR22.

Because operator revises the data among the user HLR22, user all supplementary services and the CAMEL-Subscription-Information of registration have in the past been deleted, as the mobile network that makes a start strengthens customization application CAMEL-Subscription-Information (the Originating Customized Application for Mobile Network Enhanced LogicSubscription Information of logic, be called for short " OCSI ") and the terminal mobile network strengthen customization application CAMEL-Subscription-Information (the Terminating Customized Application for Mobile NetworkEnhanced Logic Subscription Information of logic, be called for short " TCSI ") etc., and function by expansion HLR, for example increase the newly signatory HLR address of NP sign and user, make it can be transferred to HLR23 automatically, promptly HLR23 can obtain HLR22 automatically and pass the message of coming.The people who is familiar with this area can know that this message can be SRI request message 203.

Stored new CAMEL-Subscription-Information OCSI and TCSI and the various supplementary service of user among the HLR23, behind the request message SRI203 that its acquisition HLR22 comes, send (Provide Roaming Number is called for short " the PRN ") request message 204 that Provides Roaming Number to VMSC24.

VMSC24 obtains the current position of MNP user through inquiry, sends the PRN response message 205 of band MSRN to HLR23.

After HLR23 receives the PRN message 205 of band MSRN, send the SRI response message 206 comprise MSRN to HLR22, the people who is familiar with this area knows, above-mentioned message can also be MNP user's CAMEL-Subscription-Information or transferred number etc.

Then HLR22 sends SRI response message 207 and sends to MSC21, carries out subsequent treatment by MSC21.

After the MSC21 processing, send the IAM request message 208 that has MSRN to VMSC24 by MSC21.

Message (Address Complete Message was finished in the return address after VMSC24 received message, be called for short " ACM ") 209 and response message (Answer Message, abbreviation " ANM ") 210 gives MSC21, finally set up the talk business 25 to VMSC24 by MSC21.

Fig. 3 is that the message related to calls that inter-network MNP user according to an embodiment of the invention does when called is transmitted schematic diagram.Because MNP user and calling subscriber are not within the same network, for example be in respectively in the network of different operators, therefore need use GMSC provides interface for different networks.As shown in Figure 3, this system mainly contains five module: MSC31, HLR32, HLR33, GMSC34, VMSC35.

If the original signatory HLR of MNP user is HLR32, HLR33 is new signatory HLR, and HLR32 is in different networks with the HLR33 branch.Might as well establish the residing network of HLR32 and be made as network A, the residing network of HLR33 is a network B.

When other customer calls MNP user of network A, at first send IAM/Setup request message 301 to MSC31, send SRI request message 302 through MSC31 inquiry back to HLR32, judge that in HLR32 the user has been MNP user, find HLR33 and send SRI request message 303 according to the data of storing among the HLR32 to HLR33, send PRN request message 304 by HLR33 to VMSC35 then, return the PRN response message 305 that comprises MSRN to HLR33 after VMSC35 acquisition active user's the information.The processing procedure that MNP user does when called in these steps and the net is similar.

Transmit when comprising the SRI response message 306 of MSRN to HLR32 at HLR33, global title (Global Title according to HLR32, be called for short " GT ") or signaling point code judge HLR32 and divide with HLR33 and be in different networks, therefore in return messages 306, need to add and add that country distributes to the network number net_id of network B, determines that MNP user is in the network B.Above-mentioned GT sign indicating number is the addressing system of SCCP (Signaling Connect Control Part).The GT addressing mainly is to obtain the message route by user's called number is translated, thereby realizes that the overall situation continues.

Then send to MSC31 and comprise the network number net_id of network B and the SRI response message 307 of MSRN by HLR32.

After MSC31 carried out subsequent treatment, transmission had the gateway exchange GMSC34 of the IAM request message 308 of B network of network net_id and MSRN to network A.

GMSC34 removes message prefix and selects network B according to network number net_id, sends to have the IAM request message 309 of MSRN to VMSC35.

VMSC35 receives and returns ACM response message 310 after the message and ANM 311 is given GMSC34.

Give MSC31 through GMSC34 processing continuation forwarding ACM response message 312 and ANM 313, finally realize the talk business 36 between MSC31 and the VMSC35.

If repeatedly NP takes place in called MNP user.For example this called subscriber contracts MNP to network C from network B again, and then the user is setting up new HLR, when changing subscriber identification module (Subscriber IdentityModule is called for short " SIM ") card, needs modification HLR32, the data among the HLR33.The data of revising among the HLR32 change the address of original HLR33 into the address of new HLR, all data of this user of deletion in HLR33.When this user does when called, HLR32 can arrive among the new HLR and get roaming number, and call routing is handled to network C.

Though by reference some preferred embodiment of the present invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that, can do various changes to it in the form and details, and the spirit and scope of the present invention that do not depart from appended claims and limited.

Claims

1. a communication means is characterized in that, comprises following steps:

Described first attaching position register of D sends to described first mobile switching centre with described mobile station roaming number;

2. communication means according to claim 1 is characterized in that, described step C also further comprises following substep:

Described step D also further comprises following substep:

3. communication means according to claim 2, it is characterized in that, among the described step C1, according to the global title of described first attaching position register or signaling point code judge described second attaching position register whether with described first attaching position register in same network.

4. communication means according to claim 1 is characterized in that, first mobile switching centre described in the described steps A is to send the routing iinformation request message to described first attaching position register transmission.

5. communication means according to claim 1 is characterized in that, first attaching position register described in the described step B is to send the routing iinformation request message to described second attaching position register transmission.

6. communication means according to claim 1 is characterized in that, among the described step C, described second attaching position register also sends described called subscriber's CAMEL-Subscription-Information or transferred number to described first attaching position register.

7. communication means according to claim 1 is characterized in that, when described first attaching position register and described second attaching position register are in same network, also comprises following steps:

8. communication means according to claim 2 is characterized in that, when described first attaching position register and described second attaching position register are not in same network, also comprises following steps:

9. according to any described communication means in the claim 1 to 8, it is characterized in that, when described called subscriber once more during telephone-moving to the three ownership location registers, comprises following step in no particular order from described second attaching position register: