CN1150784C

CN1150784C - Method and system for cellular system to implement virtual roaming and intercommunication

Info

Publication number: CN1150784C
Application number: CNB001282115A
Authority: CN
Inventors: 李建华; 丁浩; 傅晓阳; 林跃东; 李龙
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2000-12-12
Filing date: 2000-12-12
Publication date: 2004-05-19
Anticipated expiration: 2020-12-12
Also published as: HK1047673A1; CN1358040A; HK1047673B

Abstract

The present invention relates to a method and a system for implementing the virtual roaming and the intercommunication of cellular systems. In the present invention, voice channel intercepting control among different networks and the location updating control of roaming localization can be implemented among public land movable networks (PLMN) belonging to different regions, operators and systems. The system comprises a plurality of gateway mobile switching centers (GMSC) respectively belonging to the interior of each PLMN as equipment accessing the system of the present invention, and a general home location register (HLR) for centralizing the client data management, wherein the general HLR can be virtually used as an HLR of each network itself. All clients can implement roaming, the decrease of long-distance telephone charge and the free selection of long-distance transmission modes by being distributed with different numbers of a network numbering scheme and being combined with the long-distance voice channel control function.

Description

The implementation method of cellular system virtual roaming and intercommunication and system

Technical field

The present invention relates to the cell mobile communication systems technical field, relate to free-roaming intercommunication between the mobile network of the different regions of cellular communication system, different operators, different systems or rather.Interconnected realization technology.

Background technology

In present cell mobile communication systems, each mobile subscriber has homing position, i.e. a home network.In the external network outside the user roams into its home network and when doing incoming call and breathe out, even carry out the incoming call of this roaming place breathes out in the roaming place, owing to will take the traffic resource of roaming place network and its home network simultaneously, thereby can produce caller, called party's long-distance telephone expenses, make user's mobile phone use burden (paying) to increase the weight of.In addition, when conversation occurs in different regions, in the time of particularly between the region of country boundary, though from the geographical position, only be separated by several kilometers,, owing to relate to operation rate, the price policy problem of different regions (country), cost of the phone call between these users is increased considerably,, thereby greatly hindered information interchange and intercommunication dealing between the country border regions masses because wherein contain great number even international telephone expenses that be difficult to bear.

From present circumstances, because the price policy of different regions (country) and operation rate difference, relate to the difference between the performed concrete standard agreement of each cellular mobile system again, though scientific and technological circle have launched to discuss and proposed some of the recommendations to relevant problem, but according to the knowledge of the applicant, go back the comparison total solution that neither one can address the above problem.

At publication number is CN1225787A, name is called in the patent application of " system and method for single mobile station being realized the multiple home location register within cellular communication system ", by applicant-Stockholm, SWE Ellison Telephone Co., Ltd a single travelling carriage is proposed, the technical scheme of multiple home location register, in this scheme, it is consistent that networking and system thereof constitute with present cellular mobile network, unique change is: in the attaching position register (HLR) of all external networks except that its home network that may roam into of user, add that all is used for the software command that indication mechanism removes to select roaming place network home location register (HLR), distribute an on-site number of roaming for the user who roams into the location network by this software command, realize reducing the function of the long-distance telephone expenses of this part.Though the long-distance telephone expenses that this scheme is caused in the time of can realizing reducing roaming, because the long-distance transmission link can not freely select each network interconnection the time, also just impossible long-distance telephone expenses of minimizing even international telephone expenses.Simultaneously, in this scheme, owing to increased the software command that an indication mechanism removes to select roaming place network home location register (HLR), thereby caused each attaching position register that is associated (HLR) all to need to carry out the problem of software upgrading upgrading, and between each attaching position register (HLR), owing to there is the interchange of user data, thereby it is mutual just need to carry out signaling message between each attaching position register (HLR), and this signaling message can not be compatible mutually with existing cellular mobile network, caused being difficult to dock between two attaching position registers (HLR), thereby limited the use of this technical scheme.

In sum, present situation at various rate execution between present cellular mobile network, carry out across a network, cross-region the user, when striding free-roaming between the various mobile networks of system and intercommunication, should save long-distance telephone expenses, realizing freely selecting of long-distance transmission route again, is a problem with practical value true and very big market potentiality really.

Summary of the invention

The objective of the invention is to design the implementation method and the system of a kind of cellular system virtual roaming and intercommunication, in across a network, cross-region, stride between the various wireless networks of system, realize user's free-roaming and interconnect function, can save long-distance telephone expenses, and the user can be used for selecting for use arbitrarily suitable wireless network according to the usage charges of network quality and network, freely link up.

The technical scheme that realizes the object of the invention comprises: the realization system of a kind of cellular system virtual roaming and intercommunication is characterized in that:

Total ownership location register of a centralized management is set between all need the PLMN of virtual roaming and intercommunication, and in each needs the PLMN of virtual roaming and intercommunication, is provided with one and is used for the gateway MSC that system equipment inserts;

Total ownership location register is connected with each gateway MSC, total ownership location register needs the PLMN of virtual roaming and intercommunication to be connected by signaling transfer point and each, and each gateway MSC is connected with the place PLMN and is connected with trunk transit network by gateway device.

Described each gateway MSC is connected with the Visited Mobile Switching Center of place PLMN, or directly is connected with the gateway MSC of PLMN inside, place.

Described trunk transit network comprises Internet and traditional long-distance transmission network.

In described total ownership location register, be set to and all PLMN corresponding virtual attaching position registers that needs virtual roaming and intercommunication, the standard of each virtual attaching position register is consistent with the standard of pairing PLMN.

The technical scheme that realizes the object of the invention also comprises: the implementation method of a kind of cellular system virtual roaming and intercommunication is characterized in that comprising:

Total each gateway MSC that belongs to location register and belong to each PLMN respectively is set; By the gateway MSC of all ownership of total ownership location register centralized control in each PLMN; The gateway MSC that belongs to respectively in each PLMN is set to system's access device, be connected with the Visited Mobile Switching Center of corresponding PLMN, or directly be connected with the gateway MSC of corresponding PLMN; To the user who opens an account in total ownership location register, when roaming arbitrarily between different PLMNs, the speech channel interception control between heterogeneous networks is selected in realization, and comprising: a. writes down called subscriber's true roaming number; B. the roaming position according to the called subscriber distributes interim Virtual User roaming number, sets up coupling and transformational relation between Virtual User roaming number and real user roaming number; C. give called subscriber's true roaming number again; Upgrade control with the position of roaming back realization roaming localization the user, comprise: number send the Subscriber Number consistent for the VLR Visitor Location Register in the user of current roaming network by total ownership location register according to the Visited Mobile Switching Center of user of current roaming network site, allow this roamer enjoy the same conversation telephone expenses of the original Home mobile subscriber of roaming network with the current roaming network numbering.

Described different PLMN comprises the wireless network of identical or different region, identical or different operator and identical or different system.

Described wireless network system comprises Global Systems for Mobile communications and code division multiple access system.

Described a total ownership location register is set, it is the logic entity that a virtual attaching position register is set for each PLMN correspondence in same physical entity, the standard of each virtual attaching position register adopts the standard of pairing PLMN, and uses the numbering plan of pairing PLMN.

The standard of each the virtual attaching position register in described total ownership location register can be identical also can be inequality.

The described user who opens an account in total ownership location register is the number that is assigned the numbering plan of described each PLMN to the user; Or distribute the number of the numbering plan of one of them or several PLMN.

The speech channel interception control between heterogeneous networks is selected in described realization, is to realize under the numbering plan of the employed called number of calling party that the makes a call condition consistent with the numbering plan of calling party's home network.

Described step a, when the calling party calls out roam called by the numbering plan of this home network in another network, by in total ownership location register corresponding to the virtual attaching position register of calling party and callee's network, mutual by internal information, according to called number, for calling party's Visited Mobile Switching Center inquires callee's current roaming network, obtains and preserve the true roaming number of callee with the numbering plan of callee's current roaming network; Described step b distributes the false Virtual User roaming number of corresponding calling party's gateway MSC and the relation between true roaming number of corresponding stored and Virtual User roaming number by calling party's virtual home network numbering plan; Described step c, calling party's Visited Mobile Switching Center is set up the speech channel of playing between calling party's gateway MSC with this vacation Virtual User roaming number, obtain callee's true roaming number again by total ownership location register by calling party's gateway MSC, and control follow-up speech channel, insert called.

Described step a, when the calling party calls out roam called by the numbering plan of this home network in another network, by in total ownership location register corresponding to the virtual attaching position register of calling party and callee's network, mutual by internal information, according to called number, for calling party's Visited Mobile Switching Center inquires callee's current roaming network, obtains and preserve the true roaming number of callee with the numbering plan of callee's current roaming network; Described step b distributes the false Virtual User roaming number of corresponding callee's gateway MSC and the relation between true roaming number of corresponding stored and Virtual User roaming number by callee's virtual home network numbering plan; Described step c, calling party's Visited Mobile Switching Center is set up the speech channel between two gateway MSCs that play calling party's network and callee's network with this vacation Virtual User roaming number, obtain callee's true roaming number again by total ownership location register by callee's gateway MSC, and control follow-up speech channel, insert called.

Described step a, when the calling party calls out another home network of roaming into calling party's home network called by the numbering plan of this home network, by in total ownership location register corresponding to the virtual attaching position register of calling party and callee's network, mutual by internal information, according to callee's numbering plan, the false roaming number of corresponding callee's gateway MSC of distribution returns to calling party's Visited Mobile Switching Center; Described step b, calling party's Visited Mobile Switching Center set up the speech channel between two gateway MSCs of calling party's network and callee's network with this false Virtual User roaming number; Described step c, initiate to obtain the query requests of callee's routing iinformation to total ownership location register by callee's gateway MSC, total ownership location register obtains this called subscriber's true roaming number and returns to callee's gateway MSC to callee's VLR Visitor Location Register, control follow-up speech channel by callee's gateway MSC, insert called.

The technical scheme that realizes the object of the invention can also be: the implementation method of a kind of cellular system virtual roaming and intercommunication is characterized in that may further comprise the steps:

A., a total ownership location register is set and a gateway MSC that belongs to each network is set respectively in each PLMN, each gateway MSC cooperates total ownership location register to realize virtual roaming and intercommunication;

B., the logic entity of a virtual attaching position register is set for each PLMN correspondence in same total ownership location register physical entity, the standard of each virtual attaching position register adopts the standard of pairing PLMN, and uses the numbering plan of pairing PLMN;

When C. the calling party calls out roam called by the called number of the numbering plan of this home network in another network, by in calling party's network virtual for virtual in the virtual attaching position register of caller network and the callee's network be the virtual attaching position register of callee's network, mutual by internal information, obtain the real roaming number of callee's current roaming network by the virtual attaching position register in calling party or the callee's network, the false roaming number that distributes the gateway MSC position in sign calling party's network or the callee's network is for the pathfinding of calling party's network, and storage is true, the corresponding relation of false roaming number;

D. again by false roaming number pathfinding to calling party's gateway MSC or callee's current roaming network in gateway MSC from total ownership location register, obtain the true roaming number of sign callee actual location information, calling party's calling speech channel is intercepted callee's current roaming network through the transmission network of appointment.

The realization system of cellular system virtual roaming of the present invention and intercommunication, a total ownership location register (HLR) between needing the PLMN (PLMN) of virtual roaming and intercommunication, all is set, with increase a gateway MSC (GMSC) newly in the PLMN (PLMN) that needs virtual roaming and intercommunication at each, by all gateway MSCs (GMSC) of total ownership location register (HLR) centralized control, thereby constitute cellular system virtual roaming and intercommunicating system.System of the present invention realizes that the method for heterogeneous networks virtual roaming is to utilize in the same physical entity (always belonging to location register) and each network corresponding virtual attaching position register, carry out the management of the many numbering plans of a machine, and according to the number of the position distribution corresponding numbers scheme of the roaming network of user's reality, and by the automatic coupling between called number and its roaming network position, the automatic interposition that carries out speech channel.

Attaching position register (HLR) functional similarity in total ownership location register (HLR) in this virtual roaming and the intercommunicating system and the present PLMN network, but it is the attaching position register (HLR) of an enhancement mode, function that not only can compatible original HLR can realize the internetwork virtual attaching position registers of different PLMN (HLR) function of a plurality of different regions, different operators, different systems simultaneously.Between all need the PLMN network of virtual roaming and interconnected, intercommunication, a total ownership location register (HLR) that is used to manage concentratedly is set, just be equivalent in each PLMN network of virtual roaming of the present invention and intercommunicating system, increase an attaching position register (HLR) of virtual roaming and intercommunicating system, thereby realized the function of mobile subscriber's free-roaming and intercommunication in the PLMN network of all virtual roamings and interconnected, intercommunication easily, and can reduce across a network, cross-region, the long-distance telephone expenses when striding the system roaming.

Gateway MSC in the system of the present invention (GMSC), be in each needs the PLMN network of virtual roaming and interconnected, intercommunication, all to be provided with one, this realizes the gateway MSC (GMSC) of roaming and IWF, on function with PLMN network at present in realize with the function difference of the interconnected gateway MSC (GMSC) of public service telephone network (PSTN net) very big.Gateway MSC GMSC of the present invention can realize the signaling transfer point of international long-distance telephone expenses to the mobile subscriber who opens an account, thereby realize the selection of long-distance transmission route in total ownership location register of the present invention (HLR), reach the purpose of saving telephone expenses.

The solution of the present invention can realize behind a part of equipment of stack on the existing cellular mobile network, do not need to change any soft, the hardware in the existing equipment, just can directly utilize the virtual roaming function of System and method for of the present invention to realize across a network, cross-region, stride the roaming intercommunication of system, save long-distance telephone expenses, simultaneously and the more important thing is the selection that can realize long-distance transmission route.

Description of drawings

Fig. 1 is first kind of call flow schematic diagram of existing GSM network.

Fig. 2 is second kind of call flow schematic diagram of existing GSM network.

Fig. 3 is the third call flow schematic diagram figure of existing GSM network.

Fig. 4 is the 4th a kind of call flow schematic diagram of existing GSM network.

Fig. 5 is the structural representation of honeycomb mobile virtual roaming system implementation of the present invention

Fig. 6 is first kind of speech channel interception mode schematic flow sheet roaming first kind of calling of intercommunication by the honeycomb mobile virtual that the present invention program carries out.

Fig. 7 is second kind of speech channel interception mode schematic flow sheet roaming first kind of calling of intercommunication by the honeycomb mobile virtual that the present invention program carries out.

Fig. 8 is the third speech channel interception mode schematic flow sheet of roaming first kind of calling of intercommunication by the honeycomb mobile virtual that the present invention program carries out.

Fig. 9 is second kind of call flow schematic diagram roaming intercommunication by the honeycomb mobile virtual that the present invention program carries out.

Figure 10 is the third call flow schematic diagram of roaming intercommunication by the honeycomb mobile virtual that the present invention program carries out.

Embodiment

In order to understand technical scheme of the present invention better, below 1 call flow in conjunction with the accompanying drawings earlier to the existing GSM network of accompanying drawing 4 explanations.Be in Public Land Mobile Nerwork 1 (PLMN1) and Public Land Mobile Nerwork 2 (PLMN2), to roam the called situation (Fig. 6 to Figure 10 also explains at this situation) of doing mutually at the travelling carriage 2 (MS2) that belongs to attaching position register (HLR2).The roaming of other travelling carriage 1 (MS1) is made situation that called and travelling carriage 2 (MS2) roaming does caller because of principle and flow process is identical has not just done repeat specification.Mobile services switching centre/VLR Visitor Location Register 1 (MSC/HLR1) and mobile services switching centre/VLR Visitor Location Register 2 (MSC/HLR2) belong to Public Land Mobile Nerwork 1 (PLMN1) and Public Land Mobile Nerwork 2 (PLMN2) respectively among the figure, be the equipment among the existing mobile network, i.e. Visited Mobile Switching Center (VMSC).

Referring to Fig. 1, travelling carriage 2 (MS2) roams into Public Land Mobile Nerwork 1 (PLMN1), and the travelling carriage 1 (MS1) in the Public Land Mobile Nerwork 2 (PLMN2) is initiated to the calling of travelling carriage 2 (MS2).MSC/VLR1, MSC/VLR2 are the mobile services switching centre/VLR Visitor Location Registers that belongs to Public Land Mobile Nerwork PLMN1, PLMN2 respectively among the figure, and HLR1, HLR2 are the attaching position registers (expressing the meaning of symbol is equally applicable to Fig. 2 to Fig. 4 among Fig. 1) that belongs to Public Land Mobile Nerwork PLMN1, PLMN2 respectively.

Step (1), the MS1 under MSC/VLR1 is initiated to the calling of MS2;

Step (2) is initiated to get the request of route to the attaching position register 2 (HLR2) of called MS 2 by MSC/VLR1;

Step (3), the HLR2 Query Database, discovery mobile station MS 2 is just being roamed in PLMN1, and the MSC/VLR2 in PLMN1 initiates the request of roaming number;

Step (4), MSC/VLR2 returns the roaming number of MS2 to HLR2;

Step (5), HLR2 is to MSC/VLR1 loopback route response, and the roaming number of MS2 is returned to MSC/VLR1;

Step (6), the roaming number that MSC/VLR1 analyzes MS2 are set up speech channel between MS1 and MS2, two internetwork continuing of PLMN of realizing speech channel by gateway exchange between international gateway or net again;

Step (7), MS2 inserts, and conversation is hung up until the either party.

Above-mentioned steps shows at least, in the call flow of existing GSM network, need to adopt a plurality of attaching position registers (HLR1, HLR2), and HLR1, HLR2 are two physical entities, and must be with the HLR in the standard mobile network (as complete for the GSM standard or be the CDMA standard entirely); HLR2 in the calling procedure is that the roaming number that directly gets access to MS2 in the MSC/VLR2 returns to MSC/VLR1's again; What HLR2 returned to MSC/VLR1 is the true roaming number of the true roaming position of sign MS2, also pass through gateway exchange between international gateway or net for MSC/VLR1 with this roaming number, the MS2 of pathfinding in the MSC/VLR2, just can set up two internetwork speech channels of PLMN, long-distance telephone expenses in this calling procedure even international telephone expenses are inevitable.

Referring to Fig. 2, travelling carriage 2 (MS2) roams into Public Land Mobile Nerwork 1 (PLMN1), and the travelling carriage 1 (MS1) in the Public Land Mobile Nerwork 1 (PLMN1) is initiated to the calling of travelling carriage 2 (MS2).

Step (1), the MS1 that roams under MSC/VLR1 is initiated to the calling of MS2;

Step (4), MSC/VLR2 returns the roaming number of MS2 to HLR2;

Step (6), MSC/VLR1 analyzes the roaming number of MS2, sets up the speech channel between MS1 and MS2 in PLMN1, realizes that speech channel continues in that same PLMN is internetwork;

Step (7), MS2 inserts, and conversation is hung up until the either party.

Above-mentioned steps shows at least, in the call flow of existing GSM network, when MS2 roams into PLMN1 from the PLMN2 that belongs to, must carry out location registers by the HLR2 that international signaling is transferred among the PLMN2; After MS2 roams into PLMN1 from PLMN2, if PLMN2 is different with the network formats of PLMN1, even MS2 uses the equipment (mobile phone) with standard with PLMN1, but because HLR2 and MSC/VLR2 different systems, so also can not carry out location registers to HLR2 by MSC/VLR2; MS2 do called in, MSC/VLR1 need be transferred to HLR2 obtaining the routing iinformation of MS2 by international signaling, could pathfinding to the MS2 that just roams among PLMN1, the MSC/VLR2; If MSC/VLR1 and HLR2 belong to the network equipment of different systems, signaling process can not be compatible.

Referring to Fig. 3, travelling carriage 2 (MS2) is roamed in Public Land Mobile Nerwork 2 (PLMN2), and the travelling carriage 3 (MS3) in the Public Land Mobile Nerwork 1 (PLMN1) is initiated to the calling of travelling carriage 2 (MS2).

Step (1), the MS3 that roams under MSC/VLR2 is initiated to the calling of MS2;

Step (2) is initiated to get the request of route to the attaching position register 2 (HLR2) of called MS 2 by MSC/VLR2;

Step (3), the HLR2 Query Database, discovery mobile station MS 2 is just being roamed in PLMN2, and the MSC/VLR1 in PLMN2 initiates the request of roaming number;

Step (4), MSC/VLR1 returns the roaming number of MS2 to HLR2;

Step (5), HLR2 is to MSC/VLR2 loopback route response, and the roaming number of MS2 is returned MSC/VLR2;

Step (6), MSC/VLR2 analyzes the roaming number of MS2, sets up speech channel between MS3 and MS2, two internetwork continuing of PLMN of realizing speech channel by gateway exchange between international gateway or net again;

Step (7), MS2 inserts, and conversation is hung up until the either party.

The existing problem of above-mentioned steps with basically identical shown in Figure 1, repeats no more.

Referring to Fig. 4, travelling carriage 2 (MS2) is called out in the local Mobile Origination in Public Land Mobile Nerwork 2 (PLMN2).

Step (1), the MS1 that roams under the MSC/VLR1 in the PLMN2 network is initiated to the calling of MS2;

Step (3), the HLR2 Query Database, discovery mobile station MS 2 is also roamed in PLMN2, and the MSC/VLR2 in PLMN2 initiates the request of roaming number;

Step (4), MSC/VLR2 returns the roaming number of MS2 to HLR2;

Step (5), HLR2 is to MSC/VLR1 loopback route response, and the roaming number of MS2 is returned MSC/VLR1;

Step (6), MSC/VLR1 analyzes the roaming number of MS2, sets up the speech channel between MS1 and MS2 in the PLMN2 net, realizes speech channel continuing in same PLMN network;

Step (7), MS2 inserts, and conversation is hung up until the either party.

Because this calling procedure occurs in the consolidated network, should not belong to the scope that the present invention discusses.

Referring to Fig. 5, a structure the simplest that is honeycomb mobile virtual roaming system of the present invention is formed schematic diagram, have only two PLMNs that interconnect (PLMN) among the figure, be respectively GSM net1 and GSMnet2 (also can be the network of other standard).Total ownership location register/AUC (HLR virtual/Auc) that with dashed lines is pointed out out among the figure and belong to two gateway MSCs (GMSC) of two PLMNs (PLMN) respectively, it is the newly-increased entity of realizing honeycomb mobile virtual roaming system of the present invention, middle trunk transit network adopts Internet (IP net), also can adopt other transmission means, as other traditional long-distance transmission network.

Total ownership location register/AUC (HLR virtual/Auc) (comprising database D ata) is connected with each gateway MSC (GMSC), total ownership location register/AUC (HLR virtual/Auc) needs PLMN (PLMN) the GSM net1 of virtual roaming and intercommunication to be connected with GSM net2 by signaling transfer point (S.T.P) and each, each gateway MSC (GMSC) is connected with GSM net2 with the PLMN that is belonged to (PLMN) GSM net1, and is connected with trunk transit network (IP net or existing any trunk transit network) by gateway device (IP_GW) respectively.VMSC is respectively the Visited Mobile Switching Center of PLMN (PLMN) GSM net1 and GSM net2 among the figure, is connected with GSM net2 and Signalling Transfer Point (S.T.P) thereof with affiliated PLMN (PLMN) GSM net1 respectively.

System shown in the figure shows, realizes that honeycomb mobile virtual roaming system of the present invention need be at total ownership location register/AUC (HLR/AUC) and a plurality of gateway MSC (GMSC) that belongs to respectively in each PLMN network that virtual many operations, many systems, many regions PLMN network are set on the basis of original cell mobile communication systems.Make all users (interviewee) that in honeycomb mobile virtual roaming system, open an account between each different PLMN network, to roam and to reduce long-distance telephone expenses expenditure arbitrarily.

Gateway MSC in the system of the present invention in each PLMN (GMSC), not traditional gateway MSC, because it is not to use as the critical point of interconnection between fixed network and mobile network, say from function and more to be similar to tandem exchange, they cooperate total ownership location register/AUC (HLR/AUC) to realize the speech channel interception function of selective call number, make each gateway MSC (GMSC) finally can from HLR/AUC, obtain real called subscriber's roaming number, carry out speech path control.

Total ownership location register/AUC (HLR/AUC) in the system of the present invention is except the function with traditional attaching position register/AUC, can also realize many HLR number function, with the function of virtual attaching position register/AUC of satisfying a plurality of PLMN of operator; In addition, in order to realize the function of this region user of mobile station intercommunication, always belong to travelling carriage ISDN (MSISDN) number that location register/AUC (HLR/AUC) can also discern the positional information of user of mobile station automatically and insert corresponding this user of mobile station; Moreover, in order to guarantee to realize speech channel interception function, total ownership location register/AUC (HLR/AUC) also needs and can analyze automatically, judge according to the roaming position of user of mobile station, and distribute interim Virtual User roaming number to user of mobile station, provide the real user roaming number and and interim Virtual User roaming number between coupling and conversion, to realize the speech channel interception.In order to realize that travelling carriage roams in the mobile network of different systems, HLR/AUC needs the mobile station data of compatible different systems, also need simultaneously can compatible identification different systems signaling.

Realize the internetwork function that interconnects of different operators, different system, different regions, be mainly reflected in the position renewal and call out two aspects.Further specify the process that honeycomb mobile virtual roaming system of the present invention realizes that the position is upgraded and called out below in conjunction with accompanying drawing 6 to accompanying drawing 10.

For clarity of illustration, suppose that earlier two PLMN Virtual network operators in the honeycomb mobile virtual roaming system are respectively Operator1 (tentative English name) and Operator2 (tentative English name) among Fig. 6 to Figure 10; It is GSM standard or CDMA standard that Operator1 has a network PLMN1, it is CDMA standard or GSM standard that Operator2 has a network PLMN2, therefore be cross operator between these two Operation Networks, stride system and cross-region, promptly, travelling carriage ISDN (MSISDN) numbering plan of two operators is inequality, travelling carriage ISDN (MSISDN) numbering plan of supposing the Operator1 of operator is MSN1, number N1, the MSISDN numbering plan of the Operator2 of operator is MSN2, number N2.

Suppose that the mobile station ISDN number (MSISDN) in total ownership location register adopts two kinds of numbering plan: MSN1 and MSN2 in the virtual roaming system; Total ownership location register (HLR) has two HLR identification numbers (HLR ID) in the virtual roaming system, is respectively the HLR number of two network PLMN1, PLMN2: HLR ID1 and HLR ID2; The international mobile station identity number of user in the system (IMSI) adopts the IMSI of the Operator1 of operator.

The notion that position of the present invention is upgraded is: the difference (MSC/VLR1 that is upgraded the mobile services switching centre/VLR Visitor Location Register (MSC/VLR) number of back (roaming) by total ownership location register according to the called mobile station position, MSC/VLR2), send the consistent travelling carriage number of numbering plan with called roaming place network for respectively the MSC/VLR1 roam among PLMN1 or the PLMN2 or MSC/VLR2: MSN1 or MSN2, promptly send different HLR ID number, comprise PLMN1 according to the difference of the on-site mobile services switching centre/VLR Visitor Location Register of called roaming (MSC/VLR) number, HLR number in two networks of PLMN2: HLR ID1 and HLR ID2.Thereby realize the function of two or more virtual HLR entities, and reach different roaming networks is carried out unified management, distributes the travelling carriage number according to the position, roaming place, thereby realize saving the function of incoming call exhalation telephone expenses.

Suppose that again mobile station MS b is the travelling carriage (opening an account) in the virtual roaming of the present invention system, have a user MSa who belongs to Operator2, PLMN2 (adopting the MSN2 numbering plan) and in PLMN2, roam to call out MSb, have two kinds of situations this moment:

(1), when MSa calls out the number N1 of MSN1 numbering plan of MSb, because the visitor mobile switch center (MSC/VLR2) at the caller Msa place among the PLMN2 can think that MSb and MSa be not in same PLMN2 after judging at this moment, and directly forward international gateway to, so if caller MSa do not have international authority then this calling be not allowed to;

(2), when MSa calls out the number N2 of MSN2 numbering plan of MSb, because this moment, the visitor mobile switch center (MSC/VLR2) at the caller Msa place among the PLMN2 was confirmed to be Subscriber Number among the PLMN2 of Operator2 after judging, then can call out by virtual roaming of the present invention system.

Equally, system always belongs to the user who opens an account in the location register (HLR) if the calling subscriber in the Home PLMN 1 calls out virtual roaming of the present invention, as long as that dial is MSN1 numbering plan (N1), just can set up calling, otherwise this caller must there be international authority just to allow to call out the user of MSN2 numbering plan (N2).

Upgrade, call out principle and calling procedure with Fig. 6 to the position of explanation technical solution of the present invention shown in Figure 10 below.

Referring to Fig. 6, similar to the situation of Fig. 1, travelling carriage 2 (MS2) roams into Public Land Mobile Nerwork 1 (PLMN1), and the travelling carriage 1 (MS1) in the Public Land Mobile Nerwork 2 (PLMN2) is initiated to the calling of travelling carriage 2 (MS2), calling be the number N2 of the MSN2 numbering plan of MS1.HLR1, HLR2 are same entity-two the interior logical point of total Home Location Register in the system of the present invention among the figure; GMSC, GMSC2 are the gateway MSCs that belongs to PLMN2, PLMN1 in the system of the present invention respectively; MSC/VLR1, MSC/VLR2 are two mobile services switching centre/VLR Visitor Location Registers that belong to PLMN1, PLMN2 respectively and correspond respectively to MS1, MS2.

Step (1), the mobile station MS of roaming under PLMN2, MSC/VLR1 1 is initiated to the calling of mobile station MS 2, call number be N2 (by calling out principle must be N2, if call out N1 then MS1 international authority need be arranged);

Step (2), MSC/VLR1 initiates to get route requests according to called number N2 to HLR2;

Step (3), HLR2 Query Database find that MS2 roams at PLMN1, and notice HLR1 sends routing information;

Step (4) after HLR1 receives the message informing that sends routing information, initiates to get the roaming number request with N1 to MSC/VLR2;

Step (5), MSC/VLR2 returns the real mobile station roaming number MSRN1 of MS2 to HLR1;

Step (6), HLR1 preserves the real mobile station roaming number MSRN1 of MS2, and notice HLR2 has got the true roaming number MSRN1 of MS2, distribute the false roaming number MSRN2 of a sign GMSC2 position to return to HLR2, the true roaming number MSRN1 of store M S2 and the corresponding relation of false roaming number MSRN2 in HLR1 simultaneously;

Step (7), HLR2 is a roaming number with false roaming number MSRN2, returns a route response to MSC/VLR1;

Step (8), (9), MSC/VLR1 is a called number with false roaming number MSRN2, is established to the speech channel of GMSC2 by GMSC;

Step (10), GMSC2 makes called number analysis to false roaming number MSRN2, sends routing information to HLR1;

Step (11), HLR1 returns a route response to GMSC2, by the true roaming number MSRN1 of the MS2 that stored of inquiry and the corresponding relation of false roaming number MSRN2, and adopts true roaming number MSRN1;

Step (12) is controlled the foundation of follow-up speech channel by MSC/VLR2 by GMSC2;

Step (13), MS2 inserts, conversation, hangs up until a side.

In the situation shown in Figure 6, the difference of its calling procedure and Fig. 1 calling procedure is: HLR1 and HLR2 are same physical entities, can be virtual for belonging to the attaching position register (HLR) of two heterogeneous networks, from being equivalent to two entities in logic, the network formats of two logic entities can be the same or different, particularly can be different, as one be GSM, another is CDMA; HLR2 is not the roaming number that directly obtains MS2 in the MSC/VLR2 of PLMN1, but by being implemented to the roaming number that obtains MS2 among the MSC/VLR2 with the virtual HLR1 in the PLMN1 network of MSC/VLR2, thereby, in fact total ownership location register (HLR) of system of the present invention can be logic entity HLR1 and the HLR2 that supports two kinds of different systems, the network formats of HLR1 supported PLMN 1 wherein, the network formats of HLR2 supported PLMN 2 is realized the compatibility conversion of different systems signaling alternately by internal information between HLR1 and the HLR2; HLR2 returns to MSC/VLR1 is not the true roaming number of sign MS2 actual position but the false roaming number of sign GMSC2 position, can be for MSC/VLR1 according to this vacation roaming number pathfinding to the GMSC position, get the true roaming number of identifying user MS2 actual location information by GMSC, GMSC2 in the HLR1 by getting the route signaling message again, GMSC2 intercepts PLMN1 with the calling speech channel of MS1 by the transmission network of appointment through system of the present invention according to the true roaming number of MS2 then.

Need to prove, because among Fig. 6, PLMN1 and PLMN2 are different systems, therefore a GMSC2 also will be set in PLMN1, the false roaming number that HLR2 returns is the positional information of sign PLMN1 network G MSC2 rather than the GMSC position among the sign PLMN2, intercept the GMSC2 of PLMN1 Deng speech channel after, because this GMSC2 and the same standard of MSC/VLR2, so GMSC2 can be directly obtains the true roaming number of MS2 in the HLR1, then just can be according to the roaming number pathfinding of real MS2 to MSC/VLR2.

Referring to Fig. 7, similar to situation among Fig. 6, but adopted another kind of interception mode.

Step (1), the user MS1 that roams under MSCVLR1 is initiated to the calling of MS2, and called number is N2;

Step (2), MSCVLR1 initiates to get route requests according to called number N2 to HLR2;

Step (4), after HLR1 received the message informing that sends routing information, discovery was the inside story that HLR2 initiates, HLR1 is just less than sending routing information among the MSC/VLR2, but distributes a false roaming number MSRN2 who identifies the GMSC2 position to return to HLR2;

Step (5), HLR2 is roaming number with MSRN2, to the MSC/VLR1 loop by response;

Step (6,7), MSC/VLR1 is called number with MSRN2, is established to the speech channel of GMSC2 by GMSC;

Step (8), GMSC2 makes called number analysis to MSRN2, sends routing information to HLR1;

Step (9), HLR1 initiates to get the roaming number request with N1 to MSC/VLR2

Step (10), MSC/VLR2 returns the roaming number MSRN1 of MS2 to HLR1;

Step (11), by response, roaming number is MSRN1 to HLR1 to the GMSC2 loop

Step (12), GMSC2 controls the foundation of follow-up speech channel;

Step (13), MS2 inserts, conversation.

Referring to Fig. 8, similar to situation among Fig. 6, but adopted another interception mode.

Step (1), the user MS1 that MSC/VLR1 roams down is initiated to the calling of MS2, and called number is N2;

Step (5), MSC/VLR2 returns the roaming number MSRN1 of MS2 to HLR1;

Step (6), HLR1 returns the roaming number MSRN1 of MS2 to HLR2;

Step (7), the virtual roaming number MSRN2 of HLR2 allocation identification GMSC position, the corresponding relation of store M SRN2 and MSRN1 is a roaming number with MSRN2, to the MSC/VLR1 loop by response;

Step (8) MSC/VLR1 is a called number with MSRN2, is established to the speech channel of GMSC;

Step (9) GMSC makes called number analysis to MSRN2, sends routing information to HLR2;

Step (10), by response, roaming number is MSRN1 to HLR2 to the GMSC loop;

Step (11) GMSC controls the foundation of follow-up speech channel by MSC/VLR2;

Step (12) MS2 inserts, conversation.

Referring to Fig. 9, similar to situation shown in Figure 2, travelling carriage 2 (MS2) roams into Public Land Mobile Nerwork 1 (PLMN1), and the travelling carriage 1 (MS1) that belongs to Public Land Mobile Nerwork 1 (PLMN1) is initiated to the calling of travelling carriage 2 (MS2), calling be the number N1 of the MSN1 numbering plan of MS2.HLR1, HLR2 are two logical point of the entity-total Home Location Register in the system of the present invention among the figure; MSC/VLR1, MSC/VLR2 are two mobile services switching centre/VLR Visitor Location Registers among the PLMN1.

Step (1), the user MS1 that roams under MSC/VLR1 is initiated to the calling of user MS2, and called number is N1;

Step (2), MSC/VLR1 is that N1 initiates to get route requests to HLR1 according to called number;

Step (3), HLR1 gets roaming number to MSC/VLR2;

Step (4), MSC/VLR2 returns the roaming number response;

Step (5), HLR1 returns route response to MSC/VLR1;

Step (6), MSC/VLR1 and MSC/VLR2 control speech channel are set up;

Step (7), MS2 inserts, and conversation is hung up until a side.

In the situation shown in Figure 9, the difference of its calling procedure and Fig. 2 calling procedure is: after user MS2 roams into PLMN1, need not carry out location registers among the HLR2 in PLMN2, and only need with PLMN1 virtual with the net logic entity HLR1 in carry out location registers; The location registers of MS2, can be directly to the enterprising line position registration of the HLR1 that belongs to PLMN1 in logic, because HLR1 and HLR2 are in the same physical entity, can pass through the sharing users data, the user be can be directly to carry out location registers among the HLR1, just can roam into PLMN1 from the PLMN2 of different standards; MSC/VLR1 can be directly obtains user's routing iinformation in the HLR1, because HLR1 logically belongs to PLMN1, so even MSC/VLR1 and HLR2 logically belong to the network equipment of different systems, MSC/VLR1 also can be by obtaining the routing iinformation of MS2 in logic with the HLR1 of standard, thereby set up speech channel.

Referring to Figure 10, with calling procedure basically identical shown in Figure 6, user MS2 is at Public Land Mobile Nerwork 2 (PLMN2), and the travelling carriage 3 (MS3) in the Public Land Mobile Nerwork 1 (PLMN1) is initiated to the calling of travelling carriage 2 (MS2), and the MS2 of calling is mobile station ISDN number (MSISDN) N1 of PLMN1 numbering plan MSN1.HLR1, HLR2 are two logical point of the entity-total Home Location Register in the system of the present invention among the figure; GMSC is the gateway MSC of PLMN1 in the system of the present invention; MSC/VLR1, MSC/VLR2 are respectively the mobile services switching centre/VLR Visitor Location Registers that belongs to PLMN2, PLMN1.

Step (1), the user MS3 that roams under MSC/VLR2 is initiated to the calling of user MS2, and call number is the numbering plan number N1 of PLMN1;

Step (2), MSC/VLR2 initiates to get route requests according to called number N1 to HLR1;

Step (3), after HLR1 received the message that sends routing information, the analysis user location information data found that MS2 registers successfully in PLMN2, notice HLR2 sends routing information;

Step (4) after HLR2 receives the message informing that sends routing information, is sent the roaming number request of getting with N2 to MSC/VLR1;

Step (5), MSC/VLR1 returns the true roaming number MSRN1 of MS2 to HLR2;

Step (6), HLR2 returns the true roaming number MSRN1 of MS2 to HLR1;

Step (7), HLR1 distributes virtual roaming number MSRN2, the relation of store M SRN2 and MSRN1, to the MSC/VLR2 loop by information, roaming number MSRN2;

Step (8), MSC/VLR2 is established to the speech channel of GMSC;

Step (9), GMSC sends routing information to HLR1;

Step (10), HLR1 is to GMSC loopback route response information, and roaming number is MSRN1;

Step (11), GMSC controls the foundation of follow-up speech channel;

Step (12), MS2 inserts, conversation, hangs up until a side.

The situation of Figure 10 is basic consistent with Fig. 6.

If the situation among Fig. 4, promptly with the same home network PLMN of user MS2 in the local user initiate calling to MS2, identical among calling procedure and Fig. 4, there is not any relation with HLR1, the Subscriber Number that HLR2 distributes for user MS2 is exactly the number N2 that satisfies the Operator2 of operator numbering plan, and the user needn't pay toll charge.

The incoming call exhalation flow process of Fig. 6 to Figure 10 after speech channel interception and being transferred to GMSC in the system, can directly insert IP network by the multiple interfaces that GMSC provides, and also can be linked into various transmission network by standard interface, realizes the selection of multiple transmission network.The mobile subscriber is when calling out, can dial and be different numbers, as want to walk the standard internationalization transmission network of international gateway, can be by continuing to dial the Subscriber Number (adding the national code at roaming network place) that in the roaming virtual network, is assigned to this user behind user's across-network roaming again; If want by IP network or with the transmission network of the direct direct connected link of operator, can behind user's across-network roaming, still dial and the consistent Subscriber Number of calling subscriber place network, to reach the purpose of selecting long-distance transmission network.

System of the present invention, by the logical point (virtual attaching position register) that belongs to heterogeneous networks in the same physical entity, and in heterogeneous networks under the cooperation of each gateway MSC, mobile subscriber in different systems, the different regions network is managed concentratedly, but realize this physical entity-always belong to mobile subscriber's free-roaming in the location register, and can freely select different long-distance transmission networks interconnected between each network, thereby make long-distance telephone expenses more reasonable, more preferential, save long-distance telephone expenses.

Claims

1. the realization system of cellular system virtual roaming and intercommunication is characterized in that:

2. the realization system of a kind of cellular system virtual roaming according to claim 1 and intercommunication, it is characterized in that: described each gateway MSC is connected with the Visited Mobile Switching Center of place PLMN, or directly is connected with the gateway MSC of PLMN inside, place.

3. the realization system of a kind of cellular system virtual roaming according to claim 1 and intercommunication is characterized in that: described trunk transit network comprises Internet and traditional long-distance transmission network.

4. the realization system of a kind of cellular system virtual roaming according to claim 1 and intercommunication, it is characterized in that: in described total ownership location register, be set to and all PLMN corresponding virtual attaching position registers that needs virtual roaming and intercommunication, the standard of each virtual attaching position register is consistent with the standard of pairing PLMN.

5. the implementation method of cellular system virtual roaming and intercommunication is characterized in that comprising:

Total each gateway MSC that belongs to location register and belong to each PLMN respectively is set; By the gateway MSC of all ownership of total ownership location register centralized control in each PLMN; The gateway MSC that belongs to respectively in each PLMN is set to system's access device, be connected with the Visited Mobile Switching Center of corresponding PLMN, or directly be connected with the gateway MSC of PLMN inside, place; To the user who opens an account in total ownership location register, when roaming arbitrarily between different PLMNs, the speech channel interception control between heterogeneous networks is selected in realization, and comprising: a. writes down called subscriber's true roaming number; B. the roaming position according to the called subscriber distributes interim Virtual User roaming number, sets up coupling and transformational relation between Virtual User roaming number and real user roaming number; C. give called subscriber's true roaming number again; Upgrade control with the position of roaming back realization roaming localization the user, comprise: send Subscriber Number for the VLR Visitor Location Register in the user of current roaming network by total ownership location register, this Subscriber Number is consistent with the current roaming network numbering, and described roamer is obtained in roaming network and the same conversation telephone expenses of original Home mobile subscriber.

6. the implementation method of a kind of cellular system virtual roaming according to claim 5 and intercommunication, it is characterized in that: described different PLMN comprises the wireless network of identical or different region, identical or different operator and identical or different system.

7. the implementation method of a kind of cellular system virtual roaming according to claim 6 and intercommunication, it is characterized in that: the wireless network of described different systems comprises Global Systems for Mobile communications and code division multiple access system.

8. the implementation method of a kind of cellular system virtual roaming according to claim 5 and intercommunication, it is characterized in that: described a total ownership location register is set, it is the logic entity that a virtual attaching position register is set for each PLMN correspondence in same physical entity, the standard of each virtual attaching position register adopts the standard of pairing PLMN, and uses the numbering plan of pairing PLMN.

9. the implementation method of a kind of cellular system virtual roaming according to claim 8 and intercommunication is characterized in that: the standard of each the virtual attaching position register in described total ownership location register can be identical also can be inequality.

10. the implementation method of a kind of cellular system virtual roaming according to claim 5 and intercommunication is characterized in that: the described user who opens an account in total ownership location register is the number that is assigned the numbering plan of described each PLMN to the user; Or distribute the number of the numbering plan of one of them or several PLMN.

11. the implementation method of a kind of cellular system virtual roaming according to claim 5 and intercommunication, it is characterized in that: the speech channel interception control between heterogeneous networks is selected in described realization, is to realize under the numbering plan of the employed called number of calling party that the makes a call condition consistent with the numbering plan of calling party's home network.

12. the implementation method of cellular system virtual roaming and intercommunication is characterized in that may further comprise the steps:

When C. the calling party calls out roam called by the called number of the numbering plan of this home network in another network, by the virtual attaching position register of calling party's network and the virtual attaching position register of callee's network, mutual by internal information, obtain the real roaming number of callee's current roaming network, distribute the false roaming number of the gateway MSC position of sign calling party's network or callee's network to supply calling party's network pathfinding and store corresponding relation true, false roaming number;

D. again by false roaming number pathfinding to calling party's gateway MSC or callee's current roaming network in gateway MSC, from total ownership location register, obtain the true roaming number of sign callee actual location information, calling party's calling speech channel is intercepted callee's current roaming network through the transmission network of appointment.