# US 12,764,550 B2 · Citizens broadband radio service channel selection for cellular communication networks > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,764,550 B2 - Document ID: US12764550B2 - Status: Granted - Kind: B2 - Application number: 18/175,174 - Filed: 2023-02-27 - Published: 2024-08-29 - Granted: 2026-10-13 - Earliest claimed: 2023-02-27 - Assignees: Dell Products L.P. - Applicants: Dell Products L.P. - Inventors: Yogesh Bhatia; Ravi Sharma; Ramy Atawia; Jia Liu - Web page: https://patentgrep.com/patent/US12764550B2 ## CPC - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04W 16/10: Dynamic resource partitioning - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 72/541: using the level of interference - H04W 84/042: {Public Land Mobile systems, e.g. cellular systems} - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract The described technology is generally directed towards citizens' broadband radio service (CBRS) channel selection for cellular communication networks in a manner that reduces the risk of CBRS channel revocation due to incumbent activity within a dynamic protection area. A data store can be maintained that includes dynamic protection area location information as well as historic incumbent CBRS channel use information. When selecting a CBRS channel for a radio access network (RAN) node, the position of the RAN node can be considered to determine if the RAN node is in or near a dynamic protection area. If so, the data store can be consulted to avoid selecting CBRS channels that have historically been subject to revocation in the dynamic protection area. ## Claims ### Claim 1 A method, comprising: receiving, by network equipment comprising a processor, radio unit information associated with a radio unit, wherein the radio unit information comprises radio unit position information representative of a position of the radio unit and radio unit transmission power information representative of a transmission power associated with transmission by the radio unit; determining, by the network equipment, based on the radio unit information, whether first citizens broadband radio service transmissions associated with the radio unit are threshold likely to interfere with second citizens broadband radio service transmissions within a protection area; and in response to the determining indicating that the first citizens broadband radio service transmissions are threshold likely to interfere with the second citizens broadband radio service transmissions within the protection area, predicting, by the network equipment, a reclaimable citizens broadband radio service channel associated with the protection area to result in a predicted reclaimable citizens broadband radio service channel; and based on the predicted reclaimable citizens broadband radio service channel, selecting a different citizens broadband radio service channel for use by the radio unit, wherein the different citizens broadband radio service channel comprises a citizens broadband radio service channel other than the predicted reclaimable citizens broadband radio service channel. ### Claim 2 (depends on 1) The method of claim 1, wherein the predicted reclaimable citizens broadband radio service channel comprises a citizens broadband radio service channel associated with a previous use by a device associated with an incumbent user. ### Claim 3 (depends on 1) The method of claim 1, further comprising: in response to the determining indicating that the first citizens broadband radio service transmissions are not threshold likely to interfere with the second citizens broadband radio service transmissions, permitting, by the network equipment, the radio unit to select the predicted reclaimable citizens broadband radio service channel or the different citizens broadband radio service channel. ### Claim 4 (depends on 1) The method of claim 1, wherein the selecting of the different citizens broadband radio service channel comprises generating, by the network equipment, an output that identifies the protection area, the predicted reclaimable citizens broadband radio service channel, and previous use information associated with a previous use of the predicted reclaimable citizens broadband radio service channel by a device associated with an incumbent user. ### Claim 5 (depends on 4) The method of claim 4, wherein receiving the radio unit information comprises receiving the radio unit information via a domain proxy configured to communicate with the radio unit, and wherein selecting of the different citizens broadband radio service channel for use by the radio unit further comprises communicating the output via the domain proxy. ### Claim 6 (depends on 1) The method of claim 1, wherein the selecting of the different citizens broadband radio service channel for use by the radio unit comprises: in response to submitting a spectrum access system request, receiving citizens broadband radio service channel identifications, wherein the citizens broadband radio service channel identifications identify at least the predicted reclaimable citizens broadband radio service channel and the different citizens broadband radio service channel; and selecting the different citizens broadband radio service channel from among the citizens broadband radio service channel identifications. ### Claim 7 (depends on 6) The method of claim 6, wherein the selecting of the different citizens broadband radio service channel for use by the radio unit further comprises prioritizing the citizens broadband radio service channel identifications. ### Claim 8 (depends on 1) The method of claim 1, wherein the predicting of the predicted reclaimable citizens broadband radio service channel comprises looking up the protection area in a data store comprising respective protection areas and corresponding respective reclaimable citizens broadband radio service channels. ### Claim 9 A non-transitory machine-readable medium, comprising executable instructions that, when executed by at least one processor, facilitate performance of operations, comprising: selecting a citizens broadband radio service frequency for use by a radio unit of a cellular communication network, wherein selecting the citizens broadband radio service frequency comprises: determining whether transmissions of the radio unit are restricted due to a dynamic protection area, wherein radio unit use of citizens broadband radio service frequencies within the dynamic protection area is terminable by a device associated with an incumbent user; in response to the transmissions of the radio unit being restricted due to the dynamic protection area, predicting a reclaimable citizens broadband radio service frequency based on a previous use of the reclaimable citizens broadband radio service frequency by the device associated with the incumbent user; acquiring a list of available citizens broadband radio service frequencies that are available for use by the radio unit; and identifying the citizens broadband radio service frequency from a group of the available citizens broadband radio service frequencies, wherein the group excludes the reclaimable citizens broadband radio service frequency; and selecting, from the group, a citizens broadband radio service frequency for use by the radio unit. ### Claim 10 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein the transmissions of the radio unit are first transmissions of the radio unit, and wherein determining whether the first transmissions of the radio unit are restricted due to the dynamic protection area comprises: comparing a first location of the radio unit to a second location of the dynamic protection area in order to determine whether the first transmissions of the radio unit are threshold likely to interfere, within the dynamic protection area, with second transmissions of the device associated with the incumbent user. ### Claim 11 (depends on 10) The non-transitory machine-readable medium of claim 10, wherein determining whether the first transmissions of the radio unit are restricted due to the dynamic protection area further comprises determining, based on a transmission power of the first transmissions, whether the first transmissions of the radio unit are threshold likely to interfere, within the dynamic protection area, with the second transmissions of the device associated with the incumbent user. ### Claim 12 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein predicting the reclaimable citizens broadband radio service frequency based on the previous use of the reclaimable citizens broadband radio service frequency by the device associated with the incumbent user comprises submitting a request to an updated data store comprising dynamic protection area information and updated reclaimable citizens broadband radio service channel information. ### Claim 13 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein acquiring the list of available citizens broadband radio service frequencies that are available for use by the radio unit comprises submitting a spectrum access system request. ### Claim 14 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein identifying the citizens broadband radio service frequency from the group of the available citizens broadband radio service frequencies comprises: prioritizing respective available citizens broadband radio service frequencies within the group of the available citizens broadband radio service frequencies based on respective received signal strength indicator information associated with the respective available citizens broadband radio service frequencies; and identifying a higher priority citizens broadband radio service frequency of the group of the available citizens broadband radio service frequencies as the citizens broadband radio service frequency, wherein the higher priority citizens broadband radio service frequency is associated with a higher priority than a lower priority citizens broadband radio service frequency. ### Claim 15 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein the citizens broadband radio service frequencies comprise frequencies within a range from about 3550 megahertz to about 3700 megahertz. ### Claim 16 (depends on 9) The non-transitory machine-readable medium of claim 9, wherein the previous use of the reclaimable citizens broadband radio service frequency by the device associated with the incumbent user comprises a duration within a predetermined duration range. ### Claim 17 A system, comprising at least one processor configured to process executable instructions that, when executed by the at least one processor, facilitate performance of operations, comprising: receiving radio unit information associated with at least one radio unit; based on the radio unit information, determining whether at least one first citizens broadband radio service transmission associated with the at least one radio unit is threshold likely to interfere with at least one second citizens broadband radio service transmission within at least one protection area; responsive to at least one of the at least one first citizens broadband radio service transmission being determined to be threshold likely to interfere with at least one of the at least one second citizens broadband radio service transmission within the protection area, predicting at least one reclaimable citizens broadband radio service channel associated with the at least one protection area to result in at least one predicted reclaimable citizens broadband radio service channel; and based on the at least one predicted reclaimable citizens broadband radio service channel, selecting at least one citizens broadband radio service channel for use by the at least one radio unit to result in at least one selected citizens broadband radio service channel, wherein the at least one selected citizens broadband radio service channel comprises at least one citizens broadband radio service channel other than the at least one predicted reclaimable citizens broadband radio service channel. ### Claim 18 (depends on 17) The system of claim 17, wherein the radio unit information comprises at least one of: radio unit position information representative of at least one position of the at least one radio unit or radio unit transmission power information representative of at least one transmission power associated with at least one transmission by the at least one radio unit. ### Claim 19 (depends on 17) The system of claim 17, wherein use by the at least one selected citizens broadband radio service channel facilitates avoidance, by the at least one radio unit, of transmission according to the at least one predicted reclaimable citizens broadband radio service channel. ### Claim 20 (depends on 17) The system of claim 17, wherein the operations further comprise: responsive to determining that the at least one first citizens broadband radio service transmission is not threshold likely to interfere with the at least one second citizens broadband radio service transmission, selecting at least one of the at least one reclaimable citizens broadband radio service channel or at least one citizens broadband radio service channel other than at least one of the at least one reclaimable citizens broadband radio service channel.