# US 12,120,536 B2 · Mixed mode wireless communication system operational environment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,120,536 B2 - Document ID: US12120536B2 - Status: Granted - Kind: B2 - Application number: 17/657,559 - Filed: 2022-03-31 - Published: 2022-07-28 - Granted: 2024-10-15 - Earliest claimed: 2021-01-28 - Assignees: Motorola Solutions, Inc. - Applicants: Motorola Solutions, Inc. - Inventors: Charles R. Ruelke; Hyungjae Cho; KiYoun Cho; Antonio Faraone - Web page: https://patentgrep.com/patent/US12120536B2 ## CPC - H04W 24/04: Arrangements for maintaining operational condition - H04W 4/06: Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services - H04W 16/26: Cell enhancers {or enhancement}, e.g. for tunnels, building shadow - H04W 48/12: using downlink control channel - H04W 64/003: {locating network equipment} - H04W 84/08: Trunked mobile radio systems - H04W 88/10: adapted for operation in multiple networks, e.g. multi-mode access points - H04W 48/18: Selecting a network or a communication service - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract One example Land Mobile Radio (LMR) base station includes a network interface and an electronic processor. The electronic processor is configured to receive profile information of a plurality of fifth generation (5G)/Long Term Evolution (LTE) communication devices. The profile information of the plurality of 5G/LTE communication devices may be transmitted (i) over a background gateway communication channel to an LMR communication network that includes the LMR base station and (ii) in response to the 5G/LTE software defined network detecting a fault condition of the first 5G/LTE communication network. The electronic processor is further configured to broadcast a capture beacon based on the profile information and compliant with at least some characteristics of a 5G/LTE communication protocol. The capture beacon is configured to be received by the 5G/LTE communication device to reconfigure the 5G/LTE communication device for communication compliant with an LMR communication protocol. ## Claims ### Claim 1 A Land Mobile Radio (LMR) base station comprising: a network interface configured to communicate with a plurality of LMR communication devices; and an electronic processor coupled to the network interface, wherein the electronic processor is configured to receive, via the network interface, profile information of a plurality of fifth generation (5G)/Long Term Evolution (LTE) communication devices, and broadcast, via the network interface, a capture beacon based on the profile information and compliant with at least some characteristics of a 5G/LTE communication protocol used by a 5G/LTE base station to communicate with a 5G/LTE communication device, wherein the capture beacon is configured to be received by the 5G/LTE communication device to reconfigure the 5G/LTE communication device for communication compliant with an LMR communication protocol. ### Claim 2 (depends on 1) The LMR base station of claim 1, wherein the electronic processor is configured to operate according to the LMR communication protocol such that the LMR base station provides a backup communication network that allows the 5G/LTE communication device to engage in wireless voice communication with another 5G/LTE communication device, with an LMR communication device, or both. ### Claim 3 (depends on 1) The LMR base station of claim 1, wherein the 5G/LTE communication devices of the plurality of 5G/LTE communication devices are configured to engage in wireless communication with each other over a first 5G/LTE communication network including the 5G/LTE base station; and wherein the profile information of the plurality of 5G/LTE communication devices is transmitted by a 5G/LTE software defined network in response to the 5G/LTE software defined network detecting a fault condition of the first 5G/LTE communication network that indicates that 5G/LTE network coverage for one or more of the 5G/LTE communication devices is unavailable. ### Claim 4 (depends on 3) The LMR base station of claim 3, wherein the fault condition of the first 5G/LTE communication network is determined based on the one or more of the 5G/LTE communication devices being outside of a coverage area of any 5G/LTE base stations of the first 5G/LTE communication network. ### Claim 5 (depends on 3) The LMR base station of claim 3, wherein the fault condition of the first 5G/LTE communication network is determined based on the 5G/LTE base station not functioning properly. ### Claim 6 (depends on 1) The LMR base station of claim 1, wherein the at least some characteristics of the 5G/LTE communication protocol include at least one of the group consisting of an operating radio frequency (RF) spectrum for a 5G/LTE communication network including the 5G/LTE base station, physical resource block bandwidth, sub-channel partitioning, sync symbol timing, and sub-frame timing. ### Claim 7 A method of controlling a Land Mobile Radio (LMR) base station, the method comprising: receiving, with an electronic processor of the LMR base station via a network interface of the LMR base station, profile information of a plurality of fifth generation (5G)/Long Term Evolution (LTE) communication devices; and broadcasting, with the electronic processor and via the network interface, a capture beacon based on the profile information and compliant with at least some characteristics of a 5G/LTE communication protocol used by a 5G/LTE base station to communicate with a 5G/LTE communication device, the capture beacon being configured to be received by the 5G/LTE communication device to reconfigure the 5G/LTE communication device for communication compliant with an LMR communication protocol. ### Claim 8 (depends on 7) The method of claim 7, further comprising operating, with the electronic processor and the network interface, according to the LMR communication protocol such that the LMR communication base station provides a backup communication network that allows the 5G/LTE communication device to engage in wireless voice communication with another 5G/LTE communication device, with an LMR communication device, or both. ### Claim 9 (depends on 7) The method of claim 7, wherein the 5G/LTE communication devices of the plurality of 5G/LTE communication devices are configured to engage in wireless communication with each other over a first 5G/LTE communication network including the 5G/LTE base station; and wherein the profile information of the plurality of 5G/LTE communication devices is transmitted by a 5G/LTE software defined network in response to the 5G/LTE software defined network detecting a fault condition of the first 5G/LTE communication network that indicates that 5G/LTE network coverage for one or more of the 5G/LTE communication devices is unavailable. ### Claim 10 (depends on 9) The method of claim 9, wherein the fault condition of the first 5G/LTE communication network is determined based on the one or more of the 5G/LTE communication devices being outside of a coverage area of any 5G/LTE base stations of the first 5G/LTE communication network. ### Claim 11 (depends on 9) The method of claim 9, wherein the fault condition of the first 5G/LTE communication network is determined based on the 5G/LTE base station not functioning properly. ### Claim 12 (depends on 7) The method of claim 7, wherein the at least some characteristics of the 5G/LTE communication protocol include at least one of the group consisting of an operating radio frequency (RF) spectrum for a 5G/LTE communication network including the 5G/LTE base station, physical resource block bandwidth, sub-channel partitioning, sync symbol timing, and sub-frame timing. ### Claim 13 A communication system comprising: a first fifth generation (5G)/Long-Term Evolution (LTE) communication network including a 5G/LTE base station and a plurality of 5G/LTE communication devices; a Land Mobile Radio (LMR) communication network including an LMR base station and a plurality of LMR communication devices; and a 5G/LTE software defined network implemented by a first electronic processor configured to transmit profile information of the plurality of 5G/LTE communication devices to the LMR base station; wherein the LMR base station includes a second electronic processor configured to: receive the profile information of the plurality of 5G/LTE communication devices, and in response to receiving the profile information of the plurality of 5G/LTE communication devices, broadcast a capture beacon based on the profile information and compliant with at least some characteristics of a 5G/LTE communication protocol used by the 5G/LTE base station to communicate with a 5G/LTE communication device, wherein the capture beacon is configured to be received by the 5G/LTE communication device to reconfigure the 5G/LTE communication device for communication compliant with an LMR communication protocol. ### Claim 14 (depends on 13) The communication system of claim 13, wherein the second electronic processor is configured to operate according to the LMR communication protocol such that the LMR base station provides a backup communication network that allows the 5G/LTE communication device to engage in wireless voice communication with another 5G/LTE communication device, with an LMR communication device, or both. ### Claim 15 (depends on 13) The communication system of claim 13, wherein the first electronic processor is configured to: execute a fault detection protocol to detect a fault condition of a first 5G/LTE communication network including the 5G/LTE base station that indicates that 5G/LTE network coverage for one or more 5G/LTE communication devices of the plurality of 5G/LTE communication devices is unavailable; and in response to detecting the fault condition of the first 5G/LTE communication network, transmit the profile information of the plurality of 5G/LTE communication devices to the LMR base station. ### Claim 16 (depends on 15) The communication system of claim 15, wherein the fault condition of the first 5G/LTE communication network is determined based on the one or more of the 5G/LTE communication devices being outside of a coverage area of any 5G/LTE base stations of the first 5G/LTE communication network. ### Claim 17 (depends on 15) The communication system of claim 15, wherein the first electronic processor is configured to: detect the fault condition of the first 5G/LTE communication network by determining that the 5G/LTE base station is not functioning properly; determine a location of the 5G/LTE base station that is not functioning properly; and identify the LMR base station based on a proximity of the LMR base station to the location of the 5G/LTE base station that is not functioning properly. ### Claim 18 (depends on 13) The communication system of claim 13, wherein the at least some characteristics of the 5G/LTE communication protocol include at least one of the group consisting of an operating radio frequency (RF) spectrum for a 5G/LTE communication network including the 5G/LTE base station, physical resource block bandwidth, sub-channel partitioning, sync symbol timing, and sub-frame timing. ### Claim 19 (depends on 13) The communication system of claim 13, wherein the 5G/LTE communication device is configured to: engage in a 5G/LTE network scanning process to attempt to identify a second operational 5G/LTE communication network while a first 5G/LTE communication network including the 5G/LTE base station is experiencing a fault condition that indicates that 5G/LTE network coverage for one or more 5G/LTE communication devices of the plurality of 5G/LTE communication devices is unavailable; receive the capture beacon from the LMR base station during the 5G/LTE network scanning process, wherein the capture beacon includes an operation code configured to indicate that the first 5G/LTE communication network has experienced the fault condition; and in response to receiving the capture beacon and identifying the operation code, reconfigure the 5G/LTE communication device to engage in wireless voice communication with another 5G/LTE communication device, with a LMR communication device, or both using the LMR communication protocol instead of the 5G/LTE communication protocol. ### Claim 20 (depends on 19) The communication system of claim 19, wherein reconfiguring the 5G/LTE communication device to engage in wireless voice communication using the LMR communication protocol includes the 5G/LTE communication device displaying a virtual push-to-talk (PTT) button on a graphical user interface on a display of the 5G/LTE communication device, and wherein the 5G/LTE communication device is configured to transmit voice data to the another 5G/LTE communication device, to the LMR communication device, or both using the LMR communication protocol in response to the virtual PTT button being actuated.