# US 12,193,044 B2 · Resource selection for 5G NR V2X communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,044 B2 - Document ID: US12193044B2 - Status: Granted - Kind: B2 - Application number: 17/681,104 - Filed: 2022-02-25 - Published: 2023-08-31 - Granted: 2025-01-07 - Earliest claimed: 2022-02-25 - Assignees: Toyota Motor Engineering & Manufacturing North America, Inc. - Applicants: Toyota Motor Engineering & Manufacturing North America, Inc. - Inventors: Isfar Tariq; Takayuki Shimizu; Chang-Heng Wang; Hongsheng Lu; John Kenney - Web page: https://patentgrep.com/patent/US12193044B2 ## CPC - H04W 72/542: using measured or perceived quality - H04B 17/318: Received signal strength - H04B 17/327: Received signal code power [RSCP] - H04W 48/18: Selecting a network or a communication service - H04W 72/02: Selection of wireless resources by user or terminal - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/0453: Resources in frequency domain, e.g. a carrier in FDMA - H04W 4/40: for vehicles, e.g. vehicle-to-pedestrians [V2P] - H04W 72/40: Resource management for direct mode communication, e.g. D2D or sidelink - 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 One example embodiment provides one or more of: measuring, via a user equipment (UE), sidelink received signal strength indicator (SL-RSSI) values and sidelink reference signal power received (SL-RSRP) values from a current window of a communication channel shared among a plurality of UEs, measuring, via the UE, the SL-RSRP values from a frequency-domain and a time-domain of a current window of a communication channel shared among the plurality of UEs, excluding a first subset of communication resources from a next window of the communication channel based on the RSSI values in the current window, excluding a first subset of communication resources from a next window of the communication channel based on the SL-RSRP values from a time-domain, excluding a second subset of communication resources from the next window of the communication channel based on the RSRP values, excluding a second subset of communication resources from the next window of the communication channel based on the SL-RSRP values from a frequency-domain, and selecting and reserving resource(s) remaining in the next window of the communication channel after exclusion of the first and second subsets of communication resources from the next window. ## Claims ### Claim 1 A method comprising: measuring, via a user equipment (UE), sidelink reference received signal power (SL-RSRP) values from a frequency domain and a time domain of a current window of a communication channel shared among a plurality of UEs; excluding time slots from a next window of the communication channel based on the SL-RSRP values from the time domain; excluding sub-channels corresponding to remaining non-excluded time slots a from the next window of the communication channel based on the SL-RSRP values from the frequency domain; and selecting and reserving a resource remaining in the next window of the communication channel after the excluding the time slots and the sub-channels. ### Claim 2 (depends on 1) The method of claim 1, wherein the current window and the next window each comprise: a two-dimensional array of cells in which a plurality of sub-channels are respectively assigned to a plurality of rows and a plurality of time slots are respectively assigned to a plurality of columns, and wherein the measuring of the SL-RSRP values further comprises: measuring the SL-RSRP values in the time domain and the frequency domain for each cell in the two-dimensional array. ### Claim 3 (depends on 1) The method of claim 1, further comprising: applying a function to each SL-RSRP value in the time domain in a same time slot of the current window to generate representative SL-RSRP values for each time slot in the current window, and wherein the excluding of the time slots further comprises: excluding the time slots from the next window based on a comparison of the representative SL-RSRP values in the current window to a predefined combined SL-RSRP threshold value. ### Claim 4 (depends on 1) The method of claim 1, wherein the excluding of the sub-channels based on the SL-RSRP values in the frequency domain is performed on remaining communication resources available after the excluding of the time slots based on the SL-RSRP values in the time domain. ### Claim 5 (depends on 1) The method of claim 1, further comprising: determining an average SL-RSRP value for each sub-channel in the frequency domain in the current window, and wherein the excluding of the sub-channels further comprises: excluding sub-channels in the next window based on a comparison of the average SL-RSRP values in the frequency domain to a predefined average SL-RSRP threshold value. ### Claim 6 (depends on 1) The method of claim 1, wherein the excluding of the sub-channels from the next window of the communication channel further comprises: excluding a first group of sub-channels in the next window based on SL-RSRP values of the first group subset of sub-channels in the frequency domain, and excluding a second group of sub-channels that are immediately adjacent to the first group of sub-channels in the next window. ### Claim 7 (depends on 1) The method of claim 1, wherein the method further comprises: transmitting one or more 5G NR-V2X packets from the user equipment to a receiving UE at a reserved time slot of the reserved resource and on a reserved sub-channel of the reserved resource. ### Claim 8 An apparatus comprising: an antenna configured to measure sidelink reference received signal power (SL-RSRP) values from a frequency domain and a time domain of a current window of a communication channel shared among a plurality of UEs; and a processor configured to: exclude time slots from a next window of the communication channel based on the SL-RSRP values from the time domain; exclude sub-channels corresponding to remaining non-excluded time slots from the next window of the communication channel based on the SL-RSRP values from the frequency domain, and select and reserve a resource remaining in the next window of the communication channel after the excluding the time slots and the sub-channels. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the current window and the next window each comprise: a two-dimensional array of cells in which a plurality of sub-channels are respectively assigned to a plurality of rows and a plurality of time slots are respectively assigned to a plurality of columns, and wherein the antenna is further configured to: measure the SL-RSRP values in the time domain and the frequency domain for each cell in the two-dimensional array. ### Claim 10 (depends on 8) The apparatus of claim 8, wherein the processor is configured to: apply a function to each SL-RSRP value in the time domain in a same time slot of the current window to generate representative SL-RSRP values for each time slot in the current window, and wherein when the processor excludes the time slots, the processor is further configured to: exclude the time slots from the next window based on a comparison of the representative SL-RSRP values in the current window to a predefined combined SL-RSRP threshold value. ### Claim 11 (depends on 8) The apparatus of claim 8, wherein when the processor excludes the sub-channels, the processor is further configured to: exclude the sub-channels based on the SL-RSRP values in the frequency domain is performed based on remaining communication resources available after the excluding of the time slots based on the SL-RSRP values in the time domain. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the processor is configured to: determine an average SL-RSRP value for each sub-channel in the current window, and wherein when the processor excludes the sub-channels, the processor is further configured to: exclude sub-channels in the next window based on a comparison of the average SL-RSRP values in the frequency domain to a predefined average SL-RSRP threshold value. ### Claim 13 (depends on 8) The apparatus of claim 8, wherein when the processor excludes the sub-channels, the processor is further configured to: exclude a first group of sub-channels in the next window based on SL-RSRP values of the first group of sub-channels in the frequency domain; and exclude a second group of sub-channels that are immediately adjacent to the first group of sub-channels in the next window. ### Claim 14 (depends on 8) The apparatus of claim 8, wherein the processor is further configured to: control the antenna to transmit one or more 5G NR-V2X packets from the user equipment to a receiving UE at a reserved time slot of the reserved resource and on a reserved sub-channel of the reserved resource. ### Claim 15 A non-transitory computer-readable medium comprising instructions that, when executed by a processor, cause the processor to perform: measuring, via a user equipment (UE), sidelink reference received signal power (SL-RSRP) values from a frequency domain and a time domain of a current window of a communication channel shared among a plurality of UEs; excluding time slots from a next window of the communication channel based on the SL-RSRP values from the time domain; excluding sub-channels corresponding to remaining non-excluded time slots from the next window of the communication channel based on the SL-RSRP values from the frequency domain; and selecting and reserving a resource remaining in the next window of the communication channel after the excluding the time slots and the sub-channels. ### Claim 16 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the current window and the next window each comprise: a two-dimensional array of cells in which a plurality of sub-channels are respectively assigned to a plurality of rows and a plurality of time slots are respectively assigned to a plurality of columns, and wherein the measuring of the SL-RSRP values further comprises: measuring the SL-RSRP values in the time domain and the frequency domain for each cell in the two-dimensional array. ### Claim 17 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the instructions further cause the processor to perform: applying a function to each SL-RSRP value in the time domain in a same time slot of the current window to generate representative SL-RSRP values for each time slot in the current window, and wherein the excluding of the time slots further comprises: excluding the time slots from the next window based on a comparison of the representative SL-RSRP values in the current window to a predefined combined SL-RSRP threshold value. ### Claim 18 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the excluding of the sub-channels based on the SL-RSRP values in the frequency domain is performed on remaining communication resources available after the excluding of the time slots based on the SL-RSRP values in the time domain. ### Claim 19 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the instructions further cause the processor to perform: determining an average SL-RSRP value for each sub-channel in the frequency domain in the current window, and wherein the excluding of the sub-channels further comprises: excluding sub-channels in the next window based on a comparison of the average SL-RSRP values in the frequency domain to a predefined average SL-RSRP threshold value. ### Claim 20 (depends on 15) The non-transitory computer-readable medium of claim 15, wherein the excluding of the sub-channels from the next window of the communication channel further comprises: excluding a first group of sub-channels in the next window based on SL-RSRP values of the first group of sub-channels in the frequency domain, and excluding a second group of sub-channels that are immediately adjacent to the first group of sub-channels in the next window.