# US 2001/0041567 A1 · Wireless communications system and method of operation for reducing fraud > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2001/0041567 A1 - Document ID: US20010041567A1 - Status: Published application - Kind: A1 - Application number: 09/745,214 - Filed: 2000-12-21 - Published: 2001-11-15 - Earliest claimed: 1999-11-30 - Assignees: AT&T Corp. - Inventors: Joseph LaMance Morgan - Web page: https://patentgrep.com/patent/US20010041567A1 ## CPC - H04W 12/126: Anti-theft arrangements, e.g. protection against subscriber identity module [SIM] cloning - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The wireless communications system includes a home carrier and HLR memory means, associated with the home carrier, for storing a number of Home Locator Records defining the level of service to be provided to the individual subscribers of the home carrier. The Home Locator Record is at least initially configured to prohibit call termination of the respective subscriber outside of the predetermined service area of the home carrier. However, the wireless communications system also includes reconfiguring means for at least temporarily reconfiguring the Home Locator Record of a respective subscriber in response to a request for communications service involving the subscriber who has roamed outside of the predetermined service area of the home carrier if the subscriber has prepaid for the requested services. Once reconfigured, the wireless communications system can provide the Home Locator Record of the respective subscriber to a serving carrier via IS-41 (Rev. A) messaging. The reconfigured Home Locator Record serves as the roaming subscriber's Visitor Locator Record which, in turn, authorizes the requested wireless communications service. Once the requested service has been ended, either upon completion of the call or exhaustion of the prepaid services, the reconfiguring means resets the Home Locator Record of the respective subscriber such that the Home Locator Record again prohibits call termination with the subscriber outside of the service area of the home carrier in order to further protect the wireless communications system from fraud. ## Claims ### Claim 1 A wireless communications system comprising: a home carrier for providing wireless communications service to a subscriber within a predetermined service area; HLR memory means, associated with said home carrier, for storing a home locator record database comprising a plurality of home locator records at least partially defining the wireless communications service to be provided to respective ones of the subscribers of said home carrier, wherein the home locator record is at least initially configured to prohibit call termination with the respective subscriber; and reconfiguring means for at least temporarily reconfiguring the home locator record of a respective subscriber in response to a request for wireless communications service involving the subscriber to permit call termination with the subscriber if the subscriber has paid in advance for the requested wireless communications service. ### Claim 2 (depends on 1) A wireless communications system according to claim 1 wherein the request for wireless communications service is a request for call termination with the respective subscriber outside of the predetermined service area of said home carrier, and wherein said reconfiguring means at least temporarily reconfigures the home locator record of the subscriber so as to permit call termination with the subscriber if the subscriber has paid in advance for wireless communications service with said home carrier. ### Claim 3 (depends on 1) A wireless communications system according to claim 1 further comprising a serving carrier for providing wireless communications service within a predetermined service area which is at least partially different than the predetermined service area of said home carrier, wherein said serving carrier cooperates with said home carrier for providing the requested wireless communications service if said reconfiguring means has reconfigured the home locator record of the respective subscriber to permit call termination. ### Claim 4 (depends on 1) A wireless communications system according to claim 1 wherein said reconfiguring means resets the home locator record of the respective subscriber upon completion of the requested wireless communications service such that the home locator record again prohibits call termination with the subscriber. ### Claim 5 (depends on 1) A wireless communications system according to claim 1 further comprising account memory means, associated with said home carrier, for storing account information for the plurality of subscribers of said home carrier including account information relating to the wireless communications services which have been paid in advance by respective ones of the subscribers. ### Claim 6 (depends on 5) A wireless communications system according to claim 5 further comprising monitor means for monitoring said account memory means while said home carrier provides the requested wireless communications service. ### Claim 7 (depends on 6) A wireless communications system according to claim 6 further comprising call duration control means for ending the requested wireless communications service once the account information for the respective subscriber indicates that the wireless communications services which had been paid in advance by the subscriber have been exhausted. ### Claim 8 A wireless communications switching platform for selectively providing wireless communications service to a plurality of subscribers, wherein the wireless communications service to be provided to a respective subscriber is at least partially defined by a home locator record which is at least initially configured to prohibit call termination with the subscriber outside of a predetermined service area, and wherein the wireless communications switching platform comprises: account memory means for storing account information for the plurality of subscribers; and reconfiguring means, responsive to said account memory means, for at least temporarily reconfiguring the home locator record of a respective subscriber in response to a request for wireless communications service involving the subscriber outside of the predetermined service area to permit call termination with the subscriber if the stored account information indicates that the subscriber has paid in advance for the requested wireless communications service. ### Claim 9 (depends on 8) A wireless communications switching platform according to claim 8 further comprising a switch for providing the requested wireless communications service if the home locator record permits call termination with the respective subscriber. ### Claim 10 (depends on 8) A wireless communications switching platform according to claim 8 wherein said reconfiguring means resets the home locator record of the respective subscriber upon completion of the requested wireless communications service such that the home locator record again prohibits call termination with the subscriber outside of the predetermined service area. ### Claim 11 (depends on 8) A wireless communications switching platform according to claim 8 wherein said account memory means includes account information relating to the wireless communications services which have been paid in advance by respective ones of the subscribers. ### Claim 12 (depends on 11) A wireless communications switching platform according to claim 11 further comprising monitor means for monitoring said account memory means while the wireless communications switching platform provides the requested wireless communications service. ### Claim 13 (depends on 12) A wireless communications switching platform according to claim 12 further comprising call duration control means for terminating the requested wireless communications service once the account information for the respective subscriber indicates that the wireless communications services which had been paid in advance by the subscriber have been exhausted. ### Claim 14 A method of selectively providing wireless communications service to a plurality of subscribers, wherein the wireless communications service to be provided to a respective subscriber is at least partially defined by a home locator record which is at least initially configured to prohibit call termination with the subscriber, and wherein the method comprises the steps of: receiving a request for wireless communications service including call termination with the subscriber outside of a first predetermined service area; determining if the subscriber has paid in advance for the requested wireless communications service; at least temporarily reconfiguring the home locator record of the subscriber to permit call termination with the subscriber if the subscriber has paid in advance for the requested wireless communications service; and providing the requested wireless communications service if the home locator record is reconfigured to permit call termination with the subscriber. ### Claim 15 (depends on 14) A method according to claim 14 wherein said providing step comprises providing the reconfigured home locator record of the subscriber to a serving carrier which provides the requested wireless communications service, wherein the serving carrier provides wireless communications service within a second predetermined service area which is at least partially different than the first predetermined service area. ### Claim 16 (depends on 14) A method according to claim 14 further comprising the step of resetting the home locator record of the respective subscriber upon completion of the requested wireless communications service such that the home locator record again prohibits call termination with the subscriber outside of the predetermined service area. ### Claim 17 (depends on 14) A method according to claim 14 further comprising repeatedly determining, during said providing step, if the subscriber has paid in advance for a continuation of the provided wireless communications service. ### Claim 18 (depends on 17) A method according to claim 17 further comprising terminating the requested wireless communications service upon determining that the wireless communications services which had been paid in advance by the subscriber have been exhausted.