# US 10,771,952 B2 · Method and apparatus for providing emergency codes to a mobile device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,771,952 B2 - Document ID: US10771952B2 - Status: Granted - Kind: B2 - Application number: 16/696,901 - Filed: 2019-11-26 - Published: 2020-03-26 - Granted: 2020-09-08 - Earliest claimed: 2017-04-03 - Assignees: BlackBerry Limited - Applicants: BlackBerry Limited - Inventors: Adrian Buckley; Jan Hendrik Lucas Bakker - Web page: https://patentgrep.com/patent/US10771952B2 ## CPC - H04W 4/90: Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS] - H04W 4/50: Service provisioning or reconfiguring - H04W 12/0431: Key distribution or pre-distribution; Key agreement - H04W 12/06: Authentication - H04W 48/14: using user query {or user detection} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A method at a user equipment for obtaining emergency codes using a non-Third Generation Partnership Project (3GPP) network, the method including sending a request message to a network node, the request message containing an indication; and receiving, at the user equipment, a response message, the response message including at least one mobile country code (MCC), and the response message indicating an emergency number, type or category information, wherein the emergency number, type or category information is associated with the at least one MCC, and wherein the at least one MCC indicates a portion of a Public Land Mobile Network (PLMN) code to which the emergency number, type or category information applies. ## Claims ### Claim 1 A method at a network node in a non-Third Generation Partnership Project (3GPP) network for providing emergency codes, the method comprising: receiving a request message from a user equipment (UE) at the network node, the request message comprising a request for emergency number information and a mobile country code (MCC); and transmitting, to the user equipment from the network node, a response message, the response message including an indicator of an empty list of emergency numbers, wherein the response message with the indicator causes the UE to overwrite a previously received list of local emergency numbers with the empty list. ### Claim 2 (depends on 1) The method of claim 1, wherein the request message is a DNS query. ### Claim 3 (depends on 1) The method of claim 1, wherein the indicator comprises one of “urn:3gpp:sos-anqp”, “urn:3gpp:sos-anqp:noLocalEmergyNumbers”, and “urn:3gpp:sos-anqp:mccXX(X)”, where XX(X) indicates digits of the Mobile Country Code (MCC). ### Claim 4 (depends on 1) The method of claim 1, wherein the empty list is associated with at least one of a service provider identifier or a country code. ### Claim 5 (depends on 4) The method of claim 4, wherein the service provider identifier comprises a Public Land Mobile Network (PLMN) code. ### Claim 6 (depends on 4) The method of claim 4, wherein the service provider identifier comprises a Network Access Identifier (NAI) realm. ### Claim 7 (depends on 5) The method of claim 5 wherein the PLMN code comprises a Mobile Country Code (MCC) and a Mobile Network Code (MNC). ### Claim 8 A network node configured to provide emergency codes, the network node comprising: a processor; and a communications subsystem, wherein the network node is configured to: receive a request message from a user equipment (UE), the request message comprising a request for emergency number information and a mobile country code (MCC); and transmit, to the user equipment from the network node, a response message, the response message including an indicator of an empty list of emergency numbers, wherein the response message with the indicator causes the UE to overwrite a previously received list of local emergency numbers with the empty list. ### Claim 9 (depends on 8) The network node of claim 8, wherein the request message is a DNS query. ### Claim 10 (depends on 8) The network node of claim 8, wherein the indicator comprises one of “urn:3gpp:sos-anqp”, “urn:3gpp:sos-anqp:noLocalEmergyNumbers”, and “urn:3gpp:sos-anqp:mccXX(X)”, where XX(X) indicates digits of the Mobile Country Code (MCC). ### Claim 11 (depends on 8) The network node of claim 8, wherein the empty list is associated with at least one of a service provider identifier or a country code. ### Claim 12 (depends on 11) The network node of claim 11, wherein the service provider identifier comprises a Public Land Mobile Network (PLMN) code. ### Claim 13 (depends on 11) The network node of claim 11, wherein the service provider identifier comprises a Network Access Identifier (NAI) realm. ### Claim 14 (depends on 12) The network node of claim 12 wherein the PLMN code comprises a Mobile Country Code (MCC) and a Mobile Network Code (MNC). ### Claim 15 A non-transitory computer readable medium for storing instruction code for obtaining emergency codes, where the instruction code, when executed by a processor of a network node causes the network node to: receive a request message from a user equipment (UE), the request message comprising a request for emergency number information and a mobile country code (MCC); and transmit, to the user equipment from the network node, a response message, the response message including an indicator of an empty list of emergency numbers, wherein the response message with the indicator causes the UE to overwrite a previously received list of local emergency numbers with the empty list. ### Claim 16 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the request message is a DNS query. ### Claim 17 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the indicator comprises one of “urn:3gpp:sos-anqp”, “urn:3gpp:sos-anqp:noLocalEmergyNumbers”, and “urn:3gpp:sos-anqp:mccXX(X)”, where XX(X) indicates digits of the Mobile Country Code (MCC). ### Claim 18 (depends on 15) The non-transitory computer readable medium of claim 15, wherein the empty list is associated with at least one of a service provider identifier or a country code. ### Claim 19 (depends on 18) The non-transitory computer readable medium of claim 18, wherein the service provider identifier comprises a Public Land Mobile Network (PLMN) code. ### Claim 20 (depends on 18) The non-transitory computer readable medium of claim 18, wherein the service provider identifier comprises a Network Access Identifier (NAI) realm. ### Claim 21 (depends on 19) The non-transitory computer readable medium of claim 19, wherein the PLMN code comprises a Mobile Country Code (MCC) and a Mobile Network Code (MNC).