CN1482834A

CN1482834A - Method for implementing localized roaming of mobile communication system user

Info

Publication number: CN1482834A
Application number: CNA021299951A
Authority: CN
Inventors: 张少波
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2002-09-09
Filing date: 2002-09-09
Publication date: 2004-03-17
Anticipated expiration: 2022-09-09
Also published as: CN1208990C

Abstract

The invention discloses a method for realizing the localized roaming in a mobile communication system which comprises, the roaming number manager using the combination of the obtained protocol roaming location mobile phone numbers as resource location, installing signal route, and establishing the interface between the RNM and the corresponding entity. The method by the invention improves flexibility of the mobile communication network arrangement and the utilization coefficient of the roaming position number.

Description

The implementation method of subscriber's local roaming in the mobile communication system

Technical field

The present invention relates to the mobile communication technology field, relate in particular to the implementation method of subscriber's local roaming in a kind of mobile communication system.

Background technology

In the implementation method of prior mobile phone roaming, the incoming call that is in the mobile subscriber of roaming state all will be set up communication link through the mobile network of ownership place and roaming place.Because roaming state communication route down is longer, the Internet resources that expend are also more, and the expense that makes roaming service is high than the expense of non-roaming state.

Localized roaming is meant and obtains the local number of a roaming place, with this number initiation/receipt of call when roaming takes place user's mobile phone.

Adopt localized roaming can significantly reduce the cost of the phone call of mobile phone user when roaming, satisfy roamer's communication requirement better.

In order to realize localized roaming, in mobile communications network, introduced new functional entity RNM (roaming number manager), changed original network configuration.In network application, RNM may manage the Mobile Directory Number of a plurality of different region/networks, and the Mobile Directory Number of different region/networks also may be managed by different RNM, in addition, user among mobile network may be dispersed among a plurality of HLR (attaching position register), and this networking capability to RNM has proposed requirement.

At present, also there be not a kind of rational addressing and addressing scheme and corresponding communication processing procedure thereof, to satisfy the demand of utilizing RNM to realize user's localized roaming in the mobile communications network at newly-increased RNM in the mobile communications network.

Summary of the invention

The implementation method that the purpose of this invention is to provide subscriber's local roaming in a kind of mobile communication system has improved the utilance of roaming place number, has simplified the interface between the mobile communications network entity.

The object of the present invention is achieved like this: the implementation method of subscriber's local roaming in the mobile communication system comprises:

A, be RNM (roaming number manager) configuration convention roaming place/network number, and independently PSTN/ISDN (fixed-line telephone network/integrated services digital network) number and signaling point code;

B, carry out data configuration in the entity of convention roaming place/network and belonging area network, making local number with roaming place/network of user is that the customer location query messages of destination address is the RNM that points to user's home network;

C, set up the interface of the inter-entity of RNM and convention roaming place/network and belonging area network;

D, user utilize the configuration in convention roaming place/network and each entity of belonging area network, carry out communication service at roaming place/network, realize the subscriber's local roaming.

Described step c comprises:

C1, set up the interface between RNM and MSC (mobile switching centre);

C2, set up the interface between RNM and HLR (attaching position register).

Described steps d comprises user's position updating process:

The VLR of d1, the current registration of user (visitor location register) sends position updating request to the HLR of user ascription area (attaching position register);

The HLR of d2, user ascription area passes through the roaming number manager of the PSTN/ISDN number addressing of roaming number manager to user's current location according to the position updating request of the VLR that receives according to the current position of user, notifies the user that the position renewal has taken place;

D3, roaming number manager distribute Mobile Directory Number for this user, i.e. roaming place/network number, and roaming place/network number is returned the HLR of ownership place;

The HLR of d4, user ascription area inserts this roaming place/network number among the VLR of the current registration of user, and returns the affirmation information that obtains roaming place/network number to the roaming number manager.

VLR described in the steps d 1 is the HLR that the IMSI (global mobile identification number) according to the user is addressed to user ascription area.

The position updating request institute loaded information that VLR sends to HLR in the described steps d 1, and HLR notifies the parameter of being carried in user's the position renewal to comprise to RNM in the steps d 2: user's IMSI and/or ownership place Mobile Directory Number, user's current location information, the positional information that the user is original.

User's position updating process also comprises:

D5, HLR determine that the roaming number manager of leading subscriber current location is not the roaming number manager before the user position update;

D6, according to the roaming number manager before original this user position update of location information notification of user, comprise the positional information that the user is original in the message of notice;

Roaming number manager before d7, the user position update is deleted this user's data, and sends the information of confirming this user data of deletion to user ascription area HLR.

User's position updating process also comprises:

HLR indicates to the number that the roaming number manager affirmation of user's current location is received after the user data of receiving VLR inserts affirmation.

In the mobile communication system in the implementation method of subscriber's local roaming user's position updating process also comprise: if the roaming number manager is not received the affirmation of HLR to assignment numbers in the regular hour, will discharge the number distributed.

Described steps d comprises that this process specifically may further comprise the steps with this user's of number call of user's roaming place/network process:

D8, when the number with called subscriber's roaming place/network makes a call, the GMSC in roaming place/network initiates routing inquiry to the current roaming number manager of this user;

After d9, roaming number manager receive query requests, according to roaming place number searching user's information, to the HLR of user attaching query call route;

The HLR of d10, user attaching returns Query Result to the roaming number manager, and sends the routing inquiry affirmation by the roaming number manager to GMSC, by the route of the roaming number indication GMSC calling that obtains from HLR.

Described steps d also comprises the process of calling out this user with user ascription area/network number, and this process specifically may further comprise the steps:

D11, when making a call with called subscriber's ownership place/network number, by the GMSC of ownership place to the HLR of user attaching inquiry route;

The HLR of d12, user attaching receives query requests, and distributes roaming number according to the VLR of user ascription area/network number request user registration;

The VLR of d13, user's registration distributes a roaming number for this user, and returns to the HLR of user attaching;

The HLR of d14, user attaching sends the routing inquiry confirmation to the GMSC of user ascription area, and is indicated the route of GMSC calling by the roaming number of above-mentioned distribution.

Described steps d also comprises the process that sends SMS message to user's roaming place/network number, and this process specifically may further comprise the steps:

D15, SC (Short Message Service Center) are sent to SMS GMSC (short message gateway MSC) to short message, and this GMSC (gateway MSC) initiates routing inquiry to RNM;

D16, RNM receive query requests, according to roaming place number searching user's information, and to the HLR of user attaching inquiry route;

D17, HLR return the MSC number or SGSN (Serving GPRS Support Node) number at user place to RNM;

D18, RNM send routing inquiry to SMS GMSC and confirm, with the MSC number at the user place that obtains from HLR or the route of SGSN number indication short message, and finish issuing of short message by SMS GMSC.

By above-mentioned prior art as can be seen, the invention provides rational addressing and addressing scheme and corresponding communication processing procedure at RNM, make HLR to obtain service from different RNM according to user's roaming place, a RNM can provide service for a plurality of HLR; Thereby improved the flexibility of network configuration, improved the utilance of roaming place number; Simplified the interface between the mobile communication network device, reduced the influence of the enforcement of localized roaming, promptly can introduce RNM with as far as possible little influence, realized localized roaming for prior mobile network to existing equipment in the mobile communications network.The present invention has reduced the cost of the phone call of mobile phone user when roaming significantly, satisfies roamer's communication requirement better.

Description of drawings

Fig. 1 uses honeycomb mobile telephone network structural representation of the present invention;

Fig. 2 is the specific embodiment of the present invention flow chart;

Fig. 3 uses roamer of the present invention position to upgrade signaling process;

Fig. 4 uses the signaling process with roaming place number call roamer of the present invention;

Fig. 5 uses the signaling process with roaming place number short-message sending under the user of the present invention.

Fig. 6 uses the signaling process with ownership place number call roamer of the present invention.

Embodiment

Localized roaming business in the mobile communication system of the present invention is meant and obtains the local number of a roaming place, with this number initiation/receipt of call when roaming takes place user's (being mobile phone).The localized roaming business can significantly reduce the cost of the phone call of mobile phone user when roaming, satisfies roamer's communication requirement better.

The number that the operator that carries out the localized roaming business need obtain some roaming place/networks is used for services of roaming, and these numbers are called the convention number, provide the area/network of these numbers to be called convention roaming place/network.For the convention number, its physics ownership place/network is convention roaming place/network, and logic ownership place/network is a network of carrying out localized roaming.

In order to realize the localized roaming business, in cellular mobile communication networks, introduced new functional entity RNM (roaming number manager), changed original network configuration.In mobile communications network was used, RNM may manage the Mobile Directory Number of a plurality of different region/networks, and the Mobile Directory Number of different region/networks also may be managed by different RNM; Promptly a RNM can provide service for a plurality of HLR, and a HLR also can obtain service from different RNM according to the user roaming place.

With the roaming between country is that example illustrates applied environment of the present invention, as shown in Figure 1, there is shown network configuration related to the present invention and the connection between the equipment; Comprise 3 networks among the figure: user's ownership state network, the network of the network of convention roaming country A and convention roaming country B, comprise two attaching position register HLR (a) in the cellular mobile network of ownership state, HLR (b), two roaming number manager RNM (A) and RNM (B) manage the Mobile Directory Number that convention roaming country A and B give the ownership state locality that network provides respectively.

The equipment among the figure of special needs to be pointed out is not is the armamentarium in the network.

Among the figure, BTS (base station) is the equipment that receives or send wireless signal, and it serves certain zone and the user in the zone sets up wireless connections; BTS is connected to BSC (base station controller), BSC managing radio resources, the action of control BTS; The control mobile calls process that is mainly used in of MSC (mobile switching centre); VLR (VLR Visitor Location Register) is used to store the mobile phone user's who roams into its area under one's jurisdiction data; The foundation of SGSN (Serving GPRS Support Node) control Packet Service discharges.Attaching position register (HLR) is used to preserve user's data, comprises user's identification number, user's ownership place Mobile Directory Number, the Mobile Directory Number of the current default use of user, signatory type of service, current position information such as (addresses of VLR).RNM (roaming number manager) is used to manage the Mobile Directory Number that obtains from convention roaming country, for the roamer distributes interim roaming place Mobile Directory Number, and the corresponding relation of preservation user and number, when the user leaves convention roaming country, regain the temporary number that the user uses.HLR, VLR, MSC and RNM finish user's mobile management together.

By the description of Fig. 1 as can be seen, realize that the structure of the professional cellular mobile communication networks of localized roaming is very flexibly, a plurality of RNM and a plurality of HLR can be arranged in the network; A RNM can provide service for a plurality of HLR, and a HLR also can obtain service from different RNM according to the user roaming place.

With global system for mobile communications (GSM) is the implementation method that example illustrates subscriber's local roaming in the mobile communication system of the present invention, with reference to figure 2, specifically comprises:

Step 1: be RNM distributing independent PSTN/ISDN (fixed-line telephone network/integrated services digital network) number, independently signaling point code can be realized the addressing to RNM in the telephone signaling network;

This step does not change the addressing of existing entity in the cellular mobile communication networks;

Step 2: in convention roaming place/network and belonging area network, carry out suitable data configuration, make that local number with roaming place/network of user is that the customer location query messages of destination address is the RNM that points to the user attaching network;

To the calling of convention number, need be the position of destination address with the convention number to the RNM of the logic ownership place/network of convention number inquiry called mobile phones user.Setting from the routing inquiry initiating equipment to the signaling paths the RNM, network node on the signaling paths is carried out route data configuration, and making with the convention number is that the signaling message of destination address is properly routed to RNM through the node of roaming place/network and user attaching zone network.

The inquiry of customer location is normally initiated inquiry by certain GMSC in the physics ownership place cellular mobile communications networks of called number.If call initiator is the fixed telephone network user, and network capabilities allows, inquiry can be moved the signalling point initiation of using signaling (MobileApplication Part:MAP) from any can processing, as: local switch, the international tandem of outgoing switching center etc.

Step 3: set up the interface of RNM and relevant device, comprising:

(1) interface of RNM and MSC

GMSC/SMS GMSC (gateway MSC/short message service critical point switching center) is to RNM inquiry called subscriber's routing iinformation, to finish issuing of call establishment and short message.

Adopt on this interface to move and use signaling (MAP:Mobile Application Part), corresponding to the signaling between GMSC and the HLR.

(2) interface of RNM and HLR

This interface is used for RNM and HLR and exchanges subscriber the position of mobile phone, position/routing iinformation that number that the user is current and user are current.

When the region/network of user's mobile phone changes, the position of HLR notice RNM user mobile phone is upgraded, RNM is according to the position at the current place of user's mobile phone, determine whether to distribute the number of new roaming place/network for user's mobile phone, and the roaming place/network number that distributes before the cancellation.

When the roaming place number with the user made a call, RNM received routing inquiry, further visited the user's of this roaming place number correspondence the HLR of ownership, obtained user's routing iinformation and returned the promoter of inquiry;

The signaling that adopts on this interface is slightly expanded moving application signaling (MAP:Mobile ApplicationPart).

Adopt above-mentioned RNM addressing/addressing scheme method, have the following advantages:

At first, increased the flexibility of honeycomb mobile communication network structure, a RNM can provide service for a plurality of HLR, and a HLR also can obtain service from different RNM according to the user roaming place.Because use the user of localized roaming business to concentrate among the HLR but be distributed among the different HLR, particularly for larger network.In addition, the Mobile Directory Number of different roaming place/networks also may be managed by different RNM;

Secondly, safety of user data in the user attaching zone network is guaranteed: because the GMSC of roaming place is the direct HLR of calling party ownership place, can only visit HLR by the RNM of ownership place, and can only obtain the data of certain customers' (using the user of localized roaming business), RNM has played the effect of anti-illegal-inbreak for HLR;

Its three, routing inquiry to RNM, has avoided different roaming place number addressing to different HLR according to the roaming place number addressing, has simplified the requirement that data configuration in the network is revised.Because the user distribution in the network is in a plurality of HLR, if the convention roaming number is assigned among each HLR, because the increase of signaling paths, the amount of configuration data of the signalling route described in the step 2 will be increased greatly, especially consider that signaling paths relates to a plurality of signaling equipments of convention roaming place network and home network, this will reduce operability greatly;

Its four because the number of certain roaming place is managed concentratedly,, improved the utilance of roaming place number for the user among the different HLR shares in RNM, reduced the quantity of the roaming place number that needs, simplified the interface between HLR and the RNM.Because the user distribution in the network in a plurality of HLR, if the convention roaming number is assigned among each HLR, with the utilance of convention number is reduced, causes the more convention roaming number of needs; Can consider that perhaps the convention roaming number is shared between different HLR, but increase the complexity of interface like this, query messages may transmit between different HLR and RNM.

Step 4: the user utilizes the configuration in convention roaming place/network and each entity of belonging area network, carries out communication service at roaming place/network, realizes the subscriber's local roaming, specifically comprises:

1, user's position updating process:

The execution mode of user's position updating process as shown in Figure 3, RNM (N) is the roaming number manager corresponding to user's current location/network, RNM (O) is the roaming number manager corresponding to user original (position upgrade before) position/network.In position updating process, HLR notifies the VLR deletion user's data at the original place of user, and as known flow process, signal is not come out in the drawings; Detailed process comprises:

1) VLR of the current registration of user sends user position update request " update location " to the HLR of user attaching;

2) the position renewal has taken place according to the current position of user by " Location Change " message informing RNM (N) user in HLR, must carry following information in message:

User's sign, as: global mobile identification number (IMSI) and/or user's ownership place Mobile Directory Number N;

User's current position information " current location ";

The positional information " old location " that the user is original;

3) RNM (N) receives " Location Change " message, activates " NumberActivation " number to the current default use of HLR indication user with number, and the parameter of message is number indication N '.If RNM (N) has distributed number (perhaps the user has the number of binding at roaming place/network) for the user, N ' is the number of roaming place/network; If RNM (N) can not be distributed in the number of roaming place/network for the user, the number of the current default use of N ' indication HLR user be ownership place number N (N ' N not necessarily, but the special number of certain agreement, because RNM possibly can't obtain user's ownership place number); If user's current location belongs to different roaming place/networks with original position, and RNM be the user in original roaming place/network allocation Mobile Directory Number, RNM discharges this number situation of the number binding (exception);

4) HLR inserts user data by " Insert subscriber data " message in VLR, and wherein user's number is the number of the current default use of user of RNM (N) indication;

5) the current VLR of user confirms the insertion of user data to the HLR of user attaching by " Subscriber data insertion " message;

6) HLR indicates by the number that " NumberActivation ack " message is received to RNM (N) affirmation after the user data of receiving VLR inserts affirmation; If RNM (N) does not receive the affirmation of HLR to assignment numbers in the regular hour, the number that is distributed will be discharged;

7) if the different RNM leading subscriber present positions and the number of origin-location, promptly RNM (O) is different from RNM (N):

7.1) HLR leaves by " Cancel Location " message informing RNM (O) user according to the original position of user, request deletion user's data comprises in the message parameter: user's sign, the positional information " old location " that the user is original;

7.2) RNM (O) confirms the deletion user data by " CancelLocationack " message to HLR, comprises user's sign in the message parameter;

8) HLR finishes to VLR affirmation position updating process by " Update location ack " message;

In step 2) and the message of step 7) in, all carried user position information because RNM may manage the number of a plurality of different roaming places, must judge distribution/release number where by customer location.

The sign of user in the above-mentioned steps is meant to be used for distinguishing the user, the number of identification user identity, as: global mobile identification number (IMSI), perhaps user's ownership place Mobile Directory Number N.

Step 6) is carried out after step 5) is finished, if the dialogue of HLR and VLR interrupts causing user data to insert failure like this, RNM will discharge the number that is distributed owing to receive the number indication of HLR and confirm, avoid because the number that causes unusually takies.

2, the number N with user's roaming place/network calls out this user signaling flow process, with reference to figure 4.

1) when the number N ' with the roaming place/network of called subscriber's mobile phone makes a call, certain GMSC in the network (normally certain GMSC in the network of roaming place) initiates routing inquiry to RNM;

2) RNM receives query requests, according to roaming place number searching user's information, inquires about route by " Send RoutingInformation " message to the HLR of user attaching with user's sign (global identity IMSI or ownership place number N);

3) HLR distributes roaming number by " Provide Roaming number " message to the VLR request, comprises user's IMSI information in the request;

4) VLR returns HLR to the roaming number MSRN that distributes by " Provide Roaming number ack " message;

5) HLR returns the routing inquiry result by " Send Routing Information ack " message to RNM;

6) RNM sends the routing inquiry affirmation by " Send Routing Information ack " message to GMSC, indicates the route of GMSC calling with the roaming number that obtains from HLR;

3, the signaling process that sends SMS message to the number N ' of user's roaming place/network is with reference to figure 5.

Process and the present invention that short message is submitted to short message service center have nothing to do the flow process of short-message sending under the Short Message Service Center of only having drawn among the figure.Short Message Service Center SC among the figure and SMSGMSC (short message gateway MSC) can need only on interface and the user attaching Web-compatible in arbitrary network; The detailed process of short-message sending is as follows under the Short Message Service Center:

1) Short Message Service Center is sent to SMS GMSC to short message, and this GMSC initiates routing inquiry to RNM;

2) RNM receives query requests, according to roaming place number searching user's information, inquire about route by " Send RoutingInformation for SM " message to the HLR of user attaching with user's sign (global identity IMSI or ownership place number N);

3) HLR returns the MSC number or the SGSN number at user place by " Send Routing Information for SM ack " message to RNM;

4) RNM sends routing inquiry by " Send Routing Information for SM ack " message to SMSGMSC and confirms, with the MSC number at the user place that obtains from HLR or the route of SGSN number indication short message;

5) SMS GMSC finishes issuing of short message.

Adopt the present invention, the traffic performance original for mobile communications network do not change, and flow process is also unaffected.Calling out in this user signaling flow process with the number N of user attaching state H is example explanation this point, with reference to figure 6.

1) when the ownership place number N with called subscriber's mobile phone makes a call, certain GMSC in the network (normally certain GMSC in the belonging area network) initiates routing inquiry request by " Send RoutingInformation " to user attaching location register HLR;

2) HLR receives query requests, distributes roaming number by " Provide Roaming number " message to the VLR at user place request;

3) VLR distributes a roaming number MSRN, and returns HLR by " Provide Roaming numberack " message;

4) HLR sends the routing inquiry affirmation by " Send Routing Information ack " message to GMSC, and GMSC sets up the route of calling out with roaming number MSRN indication;

The called process of mobile subscriber is the same in this process and the existing cellular mobile communication networks, is not affected because increased RNM in the network.

In addition, the implementation method of subscriber's local roaming both can be applied to the roaming place of country variant in the mobile communication system provided by the present invention, can also be applied to domestic different roaming place.Be applicable to the cell mobile communication systems of various different systems, for example include but not limited to AMPS (advanced mobile phone service system), GSM (global system for mobile communications), D-AMPS (digital advanced mobile phone service system), CDMA (code division multiple access), IMT-2000 systems such as (general designations of the 3-G (Generation Three mobile communication system) of International Telecommunications Union's definition).

Claims

1, the implementation method of subscriber's local roaming in a kind of mobile communication system is characterized in that comprising:

2, the implementation method of subscriber's local roaming in the mobile communication system according to claim 1 is characterized in that described step c comprises:

C1, set up the interface between RNM and MSC (mobile switching centre);

C2, set up the interface between RNM and HLR (attaching position register).

3, the implementation method of subscriber's local roaming in the mobile communication system according to claim 1 is characterized in that described steps d comprises user's position updating process:

4, the implementation method of subscriber's local roaming in the mobile communication system according to claim 3 is characterized in that: the VLR described in the steps d 1 is the HLR that the IMSI (global mobile identification number) according to the user is addressed to user ascription area.

5, the implementation method of subscriber's local roaming in the mobile communication system according to claim 3, it is characterized in that: the position updating request institute loaded information that VLR sends to HLR in the steps d 1, and HLR notifies the parameter of being carried in user's the position renewal to comprise to RNM in the steps d 2: user's IMSI and/or ownership place Mobile Directory Number, user's current location information, the positional information that the user is original.

6, according to the implementation method of subscriber's local roaming in claim 3 or the 5 described mobile communication system, it is characterized in that user's position updating process also comprises:

7, according to the implementation method of subscriber's local roaming in claim 3 or the 5 described mobile communication system, it is characterized in that user's position updating process also comprises:

8, according to the implementation method of subscriber's local roaming in claim 3 or the 5 described mobile communication system, the position updating process that it is characterized in that the user also comprises: if the roaming number manager is not received the affirmation of HLR to assignment numbers in the regular hour, will discharge the number that is distributed.

9, the implementation method of subscriber's local roaming in the mobile communication system according to claim 1 is characterized in that described steps d comprises that this process specifically may further comprise the steps with this user's of number call of user's roaming place/network process:

10, the implementation method of subscriber's local roaming in the mobile communication system according to claim 1 is characterized in that described steps d also comprises the process of calling out this user with user ascription area/network number, and this process specifically may further comprise the steps:

11, the implementation method of subscriber's local roaming in the mobile communication system according to claim 1 is characterized in that described steps d also comprises the process that sends SMS message to user's roaming place/network number, and this process specifically may further comprise the steps: