CN1314278C

CN1314278C - Method for conducting roaming limitation

Info

Publication number: CN1314278C
Application number: CNB2003101005748A
Authority: CN
Inventors: 王备
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-10-20
Filing date: 2003-10-20
Publication date: 2007-05-02
Anticipated expiration: 2023-10-20
Also published as: CN1610420A

Abstract

The present invention discloses a method for conducting roaming limitation, which comprises the following steps: A, small areas are used as area units, roaming limited subscriber information is set for each roaming limited subscriber in areas separated from MSC coverage, and the roaming limited subscriber information comprises a roaming limited subscriber mark and roaming allowed areas; B, service information containing current position information from a mobile terminal is received by a network side, the situation whether a subscriber at the mobile terminal is a roaming limited subscriber is judged based on the identity information of the subscriber, if the subscriber is a roaming limited subscriber, step C is executed, if the subscriber is not a roaming limited subscriber, the normal service process is continued, the process is stepped out; step C, the network side judges whether the current location of the mobile terminal is in the roaming allowed areas according to the roaming allowed areas in the step A, if the current location of the mobile terminal is not in the roaming allowed areas, the mobile terminal is refused to carry out the service, if the mobile terminal is in the roaming allowed areas, the normal service process is continued. More precise control is carried out to roaming limited areas by the present invention with a location area and the small areas as roaming limited area units, the realization is simple, and the networking cost is low.

Description

A kind of method of roaming restriction

Technical field

The present invention relates to the roaming technology of wireless communication field, be meant a kind of method of roaming restriction especially.

Background technology

Along with the development of mobile communication technology, code division multiple access (CDMA) network has obtained using widely.

Fig. 1 is a cdma network networking sketch, as shown in Figure 1, cdma network mainly is made up of portable terminal (MS) 100, base station sub-system (BSS) 102, Service Control Point 101, mobile switching centre/Service Switching Point (MSC/SSP) 103 and attaching position register (HLR) 104.

Just build stage or the relatively low place of MS density at network, each MSC/SSP tends to cover a plurality of local networks, and the coverage of each local network can be divided arbitrarily according to the needs of the network planning.In this case, because the only corresponding mobile switching centre of a plurality of local networks identifies (MSCID), then other network entities in the cdma network can't be distinguished different local networks according to MSCID.Therefore, when same MSC/SSP administered a plurality of local network, no matter MS at which local network made a call or is called out, for HLR, MS has identical MSCID, so will cause other network entities can't distinguish the problem which local network this MS belongs to.

At present, under the situation of the public MSC of a plurality of local networks,, adopt the virtual MSC technology usually for distinguishing different local networks.The virtual MSC technology is that a physics MSC is invented a plurality of logic MSC, the roaming district of the corresponding appointment of each logic MSC, and for each roaming district distribution and only distribute independently network parameter such as a MSCID.HLR can promptly allow the MSCID group of roaming in advance for MS sets the random zone that allows.When the MS of roaming carries out location registers, HLR searches in predefined MSCID group according to the current MSCID of MS in the location registers message, if MSCID is in allowing the MSCID group of roaming, then accept the position register request message of MS, otherwise the refusing user's location registers.For HLR, each logic MSC is equivalent to an independently MSC, so HLR just can determine whether this MS is in the roaming restricted area, and then realize that roaming limits by relatively user's the ownership MSCID and the MSCID of roaming place.

This method can realize the roaming restriction to the different local networks under the same MSC in the prior art.And random zone is each logic MSC The corresponding area.After dividing logic MSC, if the location area cell in the different local networks under the same MSC is roamed restriction, it is the position of cell level, guaranteeing under the situation that original miscellaneous service requires, reset logic MSC, therefore, the method underaction of this division random zone, and implementing relative complex, workload is big.

Summary of the invention

In view of this, main purpose of the present invention provides a kind of method of roaming restriction, and it can be limited user's roaming in the lane place of cell level.

A kind of method of roaming restriction provided by the invention comprises:

A. in same MSC coverage, be that area unit marks off several regions, utilize the zone that marks off to be respectively each roaming limited subscriber roaming limited subscriber information is set, identify and allow random zone comprising the roaming limited subscriber with the sub-district;

B. after network side is received the service message that contains current location information from the user,, judge whether this user is the roaming limited subscriber according to subscriber identity information wherein, if, execution in step C then, otherwise, continue normal operation flow, jump out this flow process;

C. network side is roamed according to user described in the steps A and is allowed the zone, judges whether this user's current location is that roaming allows the zone, if not, then refuse this user and carry out business, otherwise, normal operation flow continued.

The limited subscriber information of roaming described in the steps A can be arranged on separately among the MSC of network side, or is arranged among the ownership HLR of the MSC of network side and each user's correspondence.

The limited subscriber of roaming described in the steps A can be all users in the section, or the individual user.

When roaming limited subscriber when being all users at least one number section, described roaming limited subscriber information can be arranged among the MSC of network side.

When the roaming limited subscriber was the individual user, described roaming limited subscriber information can be arranged on respectively among the ownership HLR of MSC and each user's correspondence.

Steps A can comprise:

A1, setting area coding schedule and user roam the permission region list, and described regional code table comprises location area information and corresponding zone number thereof, and described user roams and allows region list to comprise roaming limited subscriber number segment and the zone number that is allowed to roam thereof.Described location area information comprises location area cell number and lane place identification code, and described lane place identification code is lane place coding LAC or Cell Global Identification GCI; Described user roams and allows region list to can further include the Subscriber Number attribute, described Subscriber Number attribute is international mobile subscriber identification/mobile identification IMSI/MIN or travelling carriage number book number MDN number, and expression uses IMSI/MIN or MDN to roam restriction respectively.

Step B may further include:

The MSC of B1, network side determines according to the subscriber identity information in the described service message whether this user uses the IMSI/MIN number to roam restriction, if, execution in step C then, otherwise, from this user's ownership HLR, obtain the MDN number of this user's correspondence, execution in step C.

When service message was location update request message, the MDN number that obtains this user's correspondence described in the step B1 from this user's ownership HLR can comprise:

B11, MSC/VLR send the enroll in notifications REGNOT message of the IMSI number that contains this user to this user's ownership HLR,

After B12, HLR receive this REGNOT message, notify this user's source MSC/VLR canceling location information; After source MSC/VLR receives this notice, cancel this user's corresponding position information, and notice HLR cancels successfully;

After B13, HLR receive the successful notice of this cancellation, from user's register information of self preserving, obtain corresponding MDN number, send the enrollment response message that contains the MDN number to MSC/VLR according to this IMSI number.

When roaming limited subscriber is all users in the section, and described roaming limited subscriber information setting is in the MSC of network side, and step C can comprise:

C1, MSC inquire about described regional code table according to the current location information in the described service message, obtain the zone number of this current position of user;

C2, the IMSI/MIN that utilizes this user's correspondence or MDN number, inquire about described user and roam the permission region list, obtain the random zone numbering that allows this user, judge the numbering whether this current position of user is arranged in the random zone numbering that allows this user, if have, then allow to continue normal operation flow, otherwise, refuse this portable terminal and carry out business.

Whether the current location of judging this portable terminal among the step C is that roaming allows the zone, is to utilize the subscriber identity information in this service message to determine from this user's ownership HLR inquiry.

Service message described in the step B can be business request information, or service response message.

Described business is to be speech business, or short message service, or data service.

The method of the ownership HLR of described inquiring user further comprises the message transmission between VLR and the described HLR, the realization of described message transmission comprises: expand the interface protocol of VLR-HLR in advance, the interface protocol of described expansion VLR-HLR is to increase customer location district information in the location registers message in the interface protocol of VLR-HLR to realize.From said process as can be seen, the present invention has following advantage and characteristics:

(1) with the area unit of sub-district, and is not random zone unit,, therefore can carries out more accurate control the zone of roaming restriction because that the zone that the sub-district covers than MSCID can be little is many with MSCID as roaming restriction.

(2) as long as the roaming restricted information is set, can realize roaming limitation function in MSC or HLR, planning logic MSC, so implementation method again is simple, reliable.And can realize that a MSC strides the function of a plurality of local networks, greatly reduces the networking cost.

Description of drawings

Fig. 1 is a cdma network networking sketch for Fig. 1;

Fig. 2 is for realizing schematic flow sheet of the present invention;

Fig. 3 is for realizing the specific embodiments of the invention schematic diagram.

Embodiment

For solving in the lane place of cell level user's roaming is limited, the present invention sets in advance the user at network side and roams restricted information, when the user initiates service message, identity information and current location information according to the user determine whether this user is in the roaming restricted area, if, then send service denial message to network side, otherwise, proceed subsequent treatment.

The user roams restricted information and can be arranged among the MSC, also can be arranged among the HLR.If the user in certain number segment limit is roamed restriction, because the user is many, the user can be roamed restricted information and be arranged among the MSC, and if the individual user is roamed restriction, then restricted information can also be roamed by certain customers and be arranged among the HLR.

Referring to shown in Figure 2, realize that method of the present invention may further comprise the steps:

Step 201: with the sub-district is area unit, and the zone that marks off in the MSC coverage is for each roaming limited subscriber is provided with roaming limited subscriber information, comprising roaming limited subscriber sign and permission random zone;

Step 202: after network side is received the service message that contains current location information from the user,, judge whether this portable terminal is the roaming limited subscriber according to subscriber identity information wherein, if then execution in step 203, otherwise, continue normal operation flow, jump out this flow process.

Step 203: network side is roamed according to user described in the steps A and is allowed the zone, judges whether the current location of this portable terminal is that roaming allows the zone, if not, then refuse this portable terminal and carry out business, otherwise, normal operation flow continued.

Describe technical scheme of the present invention in detail below in conjunction with the drawings and specific embodiments.

In order to realize the roaming restriction, at first determine which random zone to be divided, which user is roamed restriction, and which the zone that these users allow to roam is.Therefore, present embodiment is provided with two tables in MSC, be respectively the tabulation of regional code table and user's random zone, the regional code table is the corresponding random zone numbering of lane place coding (LAC) or Cell Global Identification (GCI), and this table has shown how operator divides random zone.The user roams the permission region list, be that the random zone that the user in certain cdma system international mobile subscriber identification (IMSI)/mobile identification (MIN) number section allows to roam is tabulated, this table has shown will roam restriction to which user, and the random zone that is allowed to of user.

Table 1 is the regional code table.Ginseng is shown in Table 1, and this table comprises lane place coding, location area cell number and random zone coding.Here, location area information can comprise two kinds, and a kind of is LAC, and a kind of is GCI, and each lane place can wherein utilize any coding.

LAC or GCI	Location area cell number	The random zone numbering
LAC or GCI	Location area cell number	The random zone numbering	LAC	460030755	1
GCI	4600307540001	2	LAC	460030755	1
GCI	4600307540001	2	LAC	460030754	3
GCI	4600307550001	4	LAC	460030754	3

Table 1

Table 2 is roamed the permission region list for the user.Referring to shown in Figure 2, this table number of comprising section attribute, number section and permission random zone numbering.Wherein, number section attribute can comprise two kinds, is respectively thin number (MDN) number section of IMSI/MIN section and travelling carriage number.

By table 1 and table 2 as can be seen, two lane place 460030755 Hes under certain MSC

Number section attribute	Number section	Permission random zone numbering
Number section attribute	Number section	Permission random zone numbering	MDN	8675500000000～8675599999999	1，2，3，4
IMSI/MIN	460037550000000～460037559999999	1，2，3，4	MDN	8675500000000～8675599999999	1，2，3，4
IMSI/MIN	460037550000000～460037559999999	1，2，3，4	MDN	8675400000000～8675499999999	3，4
IMSI/MIN	460037540000000～460037549999999	3，4	MDN	8675400000000～8675499999999	3，4

Table 2

460030754 and two location cell (4600307540001 and 4600307550001) are marked off by operator and are used as random zone, user in IMSI/MIN number segment 460037550000000～460037559999999 or MDN number segment 8675500000000～8675599999999, in above-mentioned two lane place and two location cell, can roam, and the user in IMSI/MIN number segment 460037540000000～460037549999999 or MDN number segment 8675400000000～8675499999999 can only can roam in LAC zone 460030754 and GCI zone 4600307550001.

Referring to shown in Figure 3, carry out the position with the user below and be updated to example, illustrate that the present invention roams the process of restriction.

After step 301: purpose BSC receives the position updating request of portable terminal, send position updating request (LOCATION UPDATE REQ) message to purpose MSC/VLR.

Step 302: after purpose MSC/ VLR Visitor Location Register (VLR) was received this location update request message, BSC connected with purpose, sent CONNect Acknowledgement message to purpose BSC.

Step 303: purpose MSC/VLR determines according to the IMSI/MIN number in this update inquiry information whether this user is the roaming limited subscriber, if then execution in step 304, otherwise, execution in step 324.

Step 304: purpose MSC/VLR utilizes location area information query region coding schedule, obtains the current region of this user coding, and roams the permission region list according to this user's IMSI/MIN number inquiry user, obtains allowing this user's random zone coding.

Step 305: judge to allow this user's random zone coding whether to comprise the current region of this user coding, if comprise, then execution in step 306, otherwise, refuse this user's position updating request, jump out this flow process.

Step 306～307: purpose MSC/VLR sends the location registers notice to this user's ownership HLR, after HLR receives this location registers notice, send the message of cancellation source position district information to the pairing source MSC/VLR of this user, after source MSC/VLR receives this message, cancel the pairing front position of this user district parameter.

Step 308～309: source MSC/VLR sends the successful message of positional information cancellation to HLR, after HLR receives this message, sends register response to purpose MSC/VLR.

After step 310～311: purpose MSC/VLR receives this register response, carry out location registers, send the position renewal to BSC and accept message, jump out this flow process.

Step 324～325: purpose MSC/VLR sends to this user's ownership HLR and contains the location registers notice of asking this user MDN number, after HLR receives this location registers notice, send the message of cancellation source position district information to the pairing source MSC/VLR of this user, after source MSC/VLR receives this message, cancel the pairing front position of this user district parameter.

Step 326～327: source MSC/VLR sends the cancellation success message to HLR, after HLR receives this message, sends the register response that contains the MDN number to purpose MSC/VLR.

After step 328: purpose MSC/VLR receives this register response, utilize the MDN number to judge whether this user is the roaming limited subscriber, if then execution in step 329, otherwise, jump out this flow process.

Step 329: purpose MSC/VLR utilizes MDN number inquiry regional code table, obtains the current region of this user coding, and roams the permission region list according to this user's MDN number inquiry user, obtains allowing this user's random zone coding.

Step 330: purpose MSC/VLR judges whether the current region of this user coding is arranged in the roaming coding that allows this user, if have, then think and allow this user to roam in current region, if do not have, then think and do not allow this user to roam in current region, send service denial message to purpose BSC, jump out this flow process, otherwise execution in step 331.

Step 332: purpose MSC/VLR carries out location registers, sends the position renewal to purpose BSC and accepts message.

Do caller or when called, also can use method of the present invention and roam restriction at portable terminal.

After MSC receives business request information from MS, judge that at first this MS is to use MIN to roam restriction or MDN roams restriction, if use MIN to roam restriction, then table look-up and judge whether that needs roam restriction to the user according to IMSI/MIN, current location information, if desired, then return service denial, and cause value is not for allowing roaming to this MS, if do not limit, then proceed business continuing and handle; If use according to the MDN number to judge whether to be the roaming limited subscriber, then from HLR, obtain the MDN number of this user's correspondence, again according to the MDN number, current location information-tabling look-up judges whether to need roam restriction to this user, if, then return service denial, otherwise, subsequent treatment continued.

Equally, after MSC receives page-response message from MS, to judge at first that also being to use MIN to roam restriction still is that the MDN number is roamed restriction, if use the MIN number to roam restriction, then table look-up and judge whether that needs roam restriction to the user, as needs according to IMSI/MIN, CGI, then return service denial, and cause value, is then proceeded business continuing and is handled if do not limit for not allowing roaming; If use and roam restriction according to the MDN number, then from HLR, obtain the MDN number of this user's correspondence, tabling look-up according to MDN number, current location information judges whether to need this user is roamed restriction again, if, then return service denial, otherwise, subsequent treatment continued.

Certainly, consistent in the mode that judges whether by tabling look-up to roam restriction to the user and the position updating process.

If wish for the individual user this business to be set, perhaps the user can be provided with several roaming districts that allow location registers.At this moment, need the different requirements that user's detailed data is distinguished the user, more convenient a kind of mode is that the roaming restricted information is set in HLR.This can allow the zone at the roaming of unique user regulation mainly due to HLR, and therefore the user can be set in MSC roams the permission region list, and a setting area coding schedule is used to find the pairing random zone numbering of location area cell and gets final product.Such as, when HLR receives the location registers notification message, come by inquiring about the roaming restricting data of self preserving whether the current position of inquiring user is the roaming restricted area, if not, then can carry out location registers, otherwise, this user's position register request refused.In addition, in order to realize message transmission, also need the interface protocol of VLR-HLR is expanded, increase customer location district information in the message such as the location registers between VLR and HLR, position requests, can realize utilizing HLR the user to be carried out the roaming restriction of cell level.

The present invention is suitable for short message or the data service that need do the roaming restriction too, and its ways to restrain is exhaled with whole with the beginning of audio call and exhaled restriction identical.

The present invention be directed to a kind of low-cost solution of cell level roaming restriction, be mainly and satisfy the ambulant demand of regional limited subscriber, operator can be area dividing unit with the sub-district, the certain user stipulated the zone that to roam, the user can normally use in these regulation zones, in case exceeded the random zone of regulation, then the user can not initiate the position renewal or call out, and promptly can not normally use.

Claims

1, a kind of method of roaming restriction is characterized in that, this method comprises:

2, method according to claim 1 is characterized in that, the limited subscriber information of roaming described in the steps A is arranged on separately among the MSC of network side, or is arranged among the ownership HLR of the MSC of network side and each user's correspondence.

3, method according to claim 1 is characterized in that, the limited subscriber of roaming described in the steps A is all users at least one number section, or the individual user.

4, method according to claim 3 is characterized in that, when the roaming limited subscriber was all users in the section, described roaming limited subscriber information setting was in the MSC of network side.

5, method according to claim 3 is characterized in that, when the roaming limited subscriber was the individual user, described roaming limited subscriber information was separately positioned among the ownership HLR of MSC and each user's correspondence.

6, method according to claim 1 is characterized in that, steps A comprises:

A1, setting area coding schedule and user roam the permission region list, and described regional code table comprises location area information and corresponding zone number thereof, and described user roams and allows region list to comprise roaming limited subscriber number segment and the zone number that is allowed to roam thereof.

7, method according to claim 6 is characterized in that, described location area information comprises location area cell number and lane place identification code, and described lane place identification code is lane place coding LAC or Cell Global Identification GCI;

Described user roams and allows region list further to comprise the Subscriber Number attribute, described Subscriber Number attribute is international mobile subscriber identification/mobile identification IMSI/MIN or travelling carriage number book number MDN number, and expression uses IMSI/MIN or MDN to roam restriction respectively.

8, method according to claim 7 is characterized in that, step B further comprises:

9, method according to claim 8 is characterized in that, is all users in the section when roaming limited subscriber, and described roaming limited subscriber information setting is in the MSC of network side, and step C comprises:

10, method according to claim 8 is characterized in that, when service message was location update request message, the MDN number that obtains this user's correspondence described in the step B1 from this user's ownership HLR comprised:

11, method according to claim 5 is characterized in that, judges among the step C whether the current location of this portable terminal is that roaming allows the zone, is to utilize the subscriber identity information in this service message to determine from this user's ownership HLR inquiry.

12, method according to claim 1 is characterized in that, service message described in the step B is a business request information, or service response message.

13, method according to claim 1 is characterized in that, described business is speech business, or short message service, or data service.

14, method according to claim 11, it is characterized in that, the method of the ownership HLR of described inquiring user further comprises the message transmission between VLR and the described HLR, the realization of described message transmission comprises: expand the interface protocol of VLR-HLR in advance, the interface protocol of described expansion VLR-HLR is to increase customer location district information in the location registers message in the interface protocol of VLR-HLR to realize.