# US 2021/0243608 A1 · Detection of fixed service incumbents on an unlicensed radio frequency band > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0243608 A1 - Document ID: US20210243608A1 - Status: Published application - Kind: A1 - Application number: 17/155,894 - Filed: 2021-01-22 - Published: 2021-08-05 - Earliest claimed: 2020-02-03 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Aleksandar DAMNJANOVIC; Tevfik YUCEK; Yongbin WEI - Web page: https://patentgrep.com/patent/US20210243608A1 ## CPC - H04W 16/14: Spectrum sharing arrangements {between different networks} - H04B 17/318: Received signal strength - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 24/10: Scheduling measurement reports {; Arrangements for measurement reports} - H04W 24/02: Arrangements for optimising operational condition - H04W 84/12: WLAN [Wireless Local Area Networks] - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) - H04B: TRANSMISSION ## Abstract Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a node may receive a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; measure the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration, and operate in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band. Numerous other aspects are provided. ## Claims ### Claim 1 A method of wireless communication performed by a node, comprising: receiving a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; measuring the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration; and operating in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band. ### Claim 2 (depends on 1) The method of claim 1, wherein the node and one or more other nodes are configured to refrain from transmitting and to refrain from contending for access to the unlicensed radio frequency band during the set of measurement occasions. ### Claim 3 (depends on 2) The method of claim 2, wherein the node and the one or more other nodes are configured for synchronous communication on the unlicensed radio frequency band. ### Claim 4 (depends on 1) The method of claim 1, wherein the unlicensed radio frequency band includes multiple downlink channels, including the first frequency channel, and multiple uplink channels, including the second frequency channel, and wherein each downlink channel of the multiple downlink channels is paired with a corresponding uplink channel of the multiple uplink channels. ### Claim 5 (depends on 4) The method of claim 4, wherein the operating is specific to the second frequency channel, and not any other uplink channels of the multiple uplink channels, based at least in part on the second frequency channel being paired with the first frequency channel. ### Claim 6 (depends on 4) The method of claim 4, wherein the set of measurement occasions is specific to the first frequency channel. ### Claim 7 (depends on 1) The method of claim 1, wherein the operating comprises transmitting a report, on at least one uplink channel of the unlicensed radio frequency band, that indicates the energy level measured on the first frequency channel. ### Claim 8 (depends on 7) The method of claim 7, further comprising refraining from transmitting on the second frequency channel for a time period that follows transmission of the report based at least in part on a determination that the energy level satisfies a threshold. ### Claim 9 (depends on 1) The method of claim 1, wherein the operating comprises selectively contending for access to the second frequency channel during a time period that follows the first measurement occasion based at least in part on whether the energy level satisfies a threshold. ### Claim 10 (depends on 9) The method of claim 9, wherein selectively contending for access comprises: refraining from contending for access to the second frequency channel for the time period if the energy level satisfies the threshold, or contending for access to the second frequency channel during the time period if the energy level does not satisfy the threshold. ### Claim 11 (depends on 1) The method of claim 1, wherein the configuration indicates at least one of: a periodicity of the set of measurement occasions, a start time for each measurement occasion of the set of measurement occasions, a duration of each measurement occasion of the set of measurement occasions, a threshold to which the energy level is to be compared, a correspondence between the first frequency channel and the second frequency channel, or a combination thereof. ### Claim 12 (depends on 1) The method of claim 1, wherein the configuration is based at least in part on whether the node is a stationary node or a mobile node. ### Claim 13 A node for wireless communication, comprising: a memory; and one or more processors operatively coupled to the memory, the memory and the one or more processors configured to: receive a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; measure the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration; and operate in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band. ### Claim 14 (depends on 13) The node of claim 13, wherein the node and one or more other nodes are configured to refrain from transmitting and to refrain from contending for access to the unlicensed radio frequency band during the set of measurement occasions. ### Claim 15 (depends on 14) The node of claim 14, wherein the node and the one or more other nodes are configured for synchronous communication on the unlicensed radio frequency band. ### Claim 16 (depends on 13) The node of claim 13, wherein the unlicensed radio frequency band includes multiple downlink channels, including the first frequency channel, and multiple uplink channels, including the second frequency channel, and wherein each downlink channel of the multiple downlink channels is paired with a corresponding uplink channel of the multiple uplink channels. ### Claim 17 (depends on 16) The node of claim 16, wherein the operating is specific to the second frequency channel, and not any other uplink channels of the multiple uplink channels, based at least in part on the second frequency channel being paired with the first frequency channel. ### Claim 18 (depends on 16) The node of claim 16, wherein the set of measurement occasions is specific to the first frequency channel. ### Claim 19 (depends on 13) The node of claim 13, wherein the memory and the one or more processors, when operating in association with a second frequency channel, are further configured to transmit a report, on at least one uplink channel of the unlicensed radio frequency band, that indicates the energy level measured on the first frequency channel. ### Claim 20 (depends on 19) The node of claim 19, wherein the memory and the one or more processors are further configured to refrain from transmitting on the second frequency channel for a tune period that follows transmission of the report based at least in part on a determination that the energy level satisfies a threshold. ### Claim 21 (depends on 13) The node of claim 13, wherein the memory and the one or more processors, when operating in association with a second frequency channel, are further configured to selectively contend for access to the second frequency channel during a time period that follows the first measurement occasion based at least in part on whether the energy level satisfies a threshold. ### Claim 22 (depends on 21) The node of claim 21, wherein the memory and the one or more processors, when selectively contending for access, are further configured to: refrain from contending for access to the second frequency channel for the time period if the energy level satisfies the threshold, or contend for access to the second frequency channel during the time period if the energy level does not satisfy the threshold. ### Claim 23 (depends on 13) The node of claim 13, wherein the configuration indicates at least one of: a periodicity of the set of measurement occasions, a start time for each measurement occasion of the set of measurement occasions, a duration of each measurement occasion of the set of measurement occasions, a threshold to which the energy level is to be compared, a correspondence between the first frequency channel and the second frequency channel, or a combination thereof. ### Claim 24 (depends on 13) The node of claim 13, wherein the configuration is based at least in part on whether the node is a stationary node or a mobile node. ### Claim 25 A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: one or more instructions that, when executed by one or more processors of a node, cause the node to: receive a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; measure the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration; and operate in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band. ### Claim 26 (depends on 25) The non-transitory computer-readable medium of claim 25, wherein the one or more instructions, that when executed by one or more processors cause the node to operate in association with the second frequency channel, further cause the node to selectively contend for access to the second frequency channel during a time period that follows the first measurement occasion based at least in part on whether the energy level satisfies a threshold. ### Claim 27 (depends on 26) The non-transitory computer-readable medium of claim 26, wherein the one or more instructions, that when executed by the one or more processors cause the node to selectively contend for access, further cause the node to: refrain from contending for access to the second frequency channel for the time period if the energy level satisfies the threshold, or contend for access to the second frequency channel during the time period if the energy level does not satisfy the threshold. ### Claim 29 (depends on 28) The apparatus of claim 28, wherein the means for operating comprises: means for transmitting a report, on at least one uplink channel of the unlicensed radio frequency band, that indicates the energy level measured on the first frequency channel. ### Claim 30 (depends on 29) The apparatus of claim 29, further comprising means for refraining from transmitting on the second frequency channel for a time period that follows transmission of the report based at least in part on a determination at the energy level satisfies a threshold. ### Claim 78 An apparatus for wireless communication, comprising: means for receiving a configuration associated with measuring an energy level of a first frequency channel of an unlicensed radio frequency band, wherein the configuration indicates a set of measurement occasions during which the energy level is to be measured on the first frequency channel; means for measuring the energy level on the first frequency channel in a first measurement occasion, of the set of measurement occasions, according to the configuration; and means for operating in association with a second frequency channel of the unlicensed radio frequency band based at least in part on measuring the energy level on the first frequency channel, wherein the second frequency channel is paired with the first frequency channel for the unlicensed radio frequency band.