# US 12,193,013 B2 · Soft cancellation of sidelink transmissions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,013 B2 - Document ID: US12193013B2 - Status: Granted - Kind: B2 - Application number: 17/448,040 - Filed: 2021-09-17 - Published: 2023-03-23 - Granted: 2025-01-07 - Earliest claimed: 2021-09-17 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Xiaojie Wang; Piyush Gupta; Xiaoxia Zhang; Jing Sun; Junyi Li; Sony Akkarakaran - Web page: https://patentgrep.com/patent/US12193013B2 ## CPC - H04W 52/08: Closed loop power control - H04W 72/23: in the downlink direction of a wireless link, i.e. towards a terminal - H04W 24/08: Testing, {supervising or monitoring} using real traffic - H04W 52/10: Open loop power control - H04W 52/24: using SIR [Signal to Interference Ratio] or other wireless path parameters - H04W 52/243: {taking into account interferences} - H04W 52/281: {taking into account user or data type priority} - H04W 52/34: TPC management, i.e. sharing limited amount of power among users or channels or data types, e.g. cell loading - H04W 52/367: {Power values between minimum and maximum limits, e.g. dynamic range} - H04W 52/383: {power control in peer-to-peer links} - H04W 52/245: {taking into account received signal strength} - H04W 72/541: using the level of interference - H04W 72/566: of the information or information source or recipient - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Methods, apparatuses, and computer-readable medium for soft cancellation of sidelink transmissions are provided. An example method may include receiving, from a base station, DCI comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter. The open loop power control parameter, the maximum transmit power, or the closed loop power control parameter may be associated with a PSSCH or a PSCCH. The example method may further include reducing a transmit power of a scheduled transmission associated with the PSSCH or the PSCCH to a reduced transmit power if the reduced transmit power is above a threshold or cancel the scheduled transmission if the reduced transmit power is below the threshold. The reduced transmit power may be based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter. ## Claims ### Claim 1 An apparatus for wireless communication at a first user equipment (UE), comprising: one or more memories; and one or more processors coupled to the one or more memories and configured to: receive, from a base station, downlink control information (DCI) comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, wherein the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter is associated with a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH); reduce a transmit power of a scheduled transmission associated with the PSSCH or the PSCCH to a reduced transmit power if the reduced transmit power is above a threshold or cancel the scheduled transmission if the reduced transmit power is below the threshold, wherein the reduced transmit power is based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter; and measure an interference level associated with a transmission from a high-priority (HP) UE for a period of time, wherein the transmission from the HP UE comprises an overlap with the scheduled transmission, wherein the threshold is based on the measured interference level. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the overlap is associated with a zero power (ZP) channel state information (CSI) reference signal (RS) (ZP-CSI-RS) for interference measurement (IM). ### Claim 3 (depends on 1) The apparatus of claim 1, wherein the period of time is based on a duration of the overlap or configured by the base station. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein to measure the interference level, the one or more processors coupled to the one or more memories is configured to measure a reference signal receive power (RSRP) or a first received signal strength indicator (RSSI) associated with a demodulation reference signal (DM-RS) associated with the overlap, and wherein a configuration comprising a sequence form and one or more time and frequency resources associated with the DM-RS is received from the base station. ### Claim 5 (depends on 4) The apparatus of claim 4, wherein the one or more processors coupled to the one or more memories is further configured to: measure a second RSSI associated with a non-overlapping region of the transmission from the HP UE with the first RSSI, wherein the threshold is based on the second RSSI. ### Claim 6 (depends on 5) The apparatus of claim 5, wherein the threshold is associated with a signal-to-interference plus noise ratio (SINR) associated with a sufficient power for decoding based on the interference level. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the threshold is within an upper limit or a lower limit configured by the base station. ### Claim 8 An apparatus for wireless communication at a first user equipment (UE), comprising: one or more memories; and one or more processors coupled to the one or more memories and configured to: receive, from a base station, downlink control information (DCI) comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, wherein the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter is associated with a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH); reduce a transmit power of a scheduled transmission associated with the PSSCH or the PSCCH to a reduced transmit power if the reduced transmit power is above a threshold or cancel the scheduled transmission if the reduced transmit power is below the threshold, wherein the reduced transmit power is based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter; and wherein to reduce the transmit power, the one or more processors coupled to the one or more memories is further configured to: measure a second transmit power associated with a transmission from a high-priority (HP) UE; and calculate the reduced transmit power based on the second transmit power and at least one of the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the reduced transmit power is further based on a number of resource blocks associated with the PSSCH. ### Claim 10 (depends on 8) The apparatus of claim 8, wherein the reduced transmit power is further based on a power control factor associated with the PSSCH or the PSCCH. ### Claim 11 (depends on 8) The apparatus of claim 8, wherein the reduced transmit power is further based on a measured interference associated with the PSSCH or the PSCCH. ### Claim 12 (depends on 8) The apparatus of claim 8, wherein the reduced transmit power is further based on a power back-off. ### Claim 13 (depends on 11) The apparatus of claim 11, further comprising a transceiver coupled to the one or more processors, wherein the one or more processors coupled to the one or more memories is further configured to: transmit, to a second UE, the scheduled transmission with the reduced transmit power. ### Claim 14 An apparatus for wireless communication at a first user equipment (UE), comprising: one or more memories; and one or more processors coupled to the one or more memories and configured to: receive, from a base station, downlink control information (DCI) comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, wherein the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter is associated with a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH); and receive, from a second UE, a scheduled transmission with a transmit power, based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter, the transmit power of the scheduled transmission associated with the PSSCH or the PSCCH if the transmit power is above a threshold; wherein the threshold is based on an interference level associated with a transmission from a high-priority (HP) UE to the first UE for a period of time, wherein the transmission from the HP UE includes an overlap with the scheduled transmission. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the overlap is associated with a zero power (ZP) CSI RS (ZP-CSI-RS) for interference measurement (IM). ### Claim 16 (depends on 14) The apparatus of claim 14, wherein the period of time is based on a duration of the overlap or configured by the base station. ### Claim 17 (depends on 14) The apparatus of claim 14, wherein the interference level is based on a reference signal receive power (RSRP) or a first received signal strength indicator (RSSI) associated with a demodulation reference signal (DM-RS) associated with the overlap, and wherein the DM-RS is transmitted from the base station. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the threshold is further based on a second RSSI associated with a non-overlapping region of the transmission from the HP UE with the first RSSI. ### Claim 19 (depends on 18) The apparatus of claim 18, wherein the threshold is associated with a signal-to-interference plus noise ratio (SINR) associated with a sufficient power for decoding based on the interference level. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the threshold is within an upper limit or a lower limit configured by the base station. ### Claim 21 An apparatus for wireless communication at a first user equipment (UE), comprising: one or more memories; and one or more processors coupled to the one or more memories and configured to: receive, from a base station, downlink control information (DCI) comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, wherein the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter is associated with a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH); and receive, from a second UE, a scheduled transmission with a transmit power, based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter, the transmit power of the scheduled transmission associated with the PSSCH or the PSCCH if the transmit power is above a threshold; wherein the transmit power is based on a second transmit power associated with a transmission from a high-priority (HP) UE to the first UE and at least one of the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter. ### Claim 22 (depends on 21) The apparatus of claim 21, wherein the transmit power is further based on a number of resource blocks associated with the PSSCH. ### Claim 23 (depends on 21) The apparatus of claim 21, wherein the transmit power is further based on a power control factor associated with the PSSCH or the PSCCH. ### Claim 24 (depends on 21) The apparatus of claim 21, wherein the transmit power is further based on a measured interference associated with the PSSCH or the PSCCH. ### Claim 25 (depends on 21) The apparatus of claim 21, wherein the transmit power is further based on a power back-off. ### Claim 26 (depends on 14) The apparatus of claim 14, further including a transceiver coupled to the one or more processors. ### Claim 27 A method for wireless communication at a first user equipment (UE), including: receiving, from a base station, DCI including at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, The open loop power control parameter, the maximum transmit power, or the closed loop power control parameter may be associated with a PSSCH or a PSCCH; reducing a transmit power of a scheduled transmission associated with the PSSCH or the PSCCH to a reduced transmit power if the reduced transmit power is above a threshold or cancelling the scheduled transmission if the reduced transmit power is below the threshold, wherein the reduced transmit power is based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter; and measuring an interference level associated with a transmission from a high-priority (HP) UE for a period of time, wherein the transmission from the HP UE comprises an overlap with the scheduled transmission, wherein the threshold is based on the measured interference level. ### Claim 28 A method for wireless communication at a first user equipment (UE), including: receiving, from a base station, downlink control information (DCI) comprising at least one of: an open loop power control parameter, a maximum transmit power, or a closed loop power control parameter, wherein the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter is associated with a physical sidelink shared channel (PSSCH) or a physical sidelink control channel (PSCCH); and receiving, from a second UE, a scheduled transmission with a transmit power, based on the open loop power control parameter, the maximum transmit power, or the closed loop power control parameter, the transmit power of the scheduled transmission associated with the PSSCH or the PSCCH if the transmit power is above a threshold; wherein the threshold is based on an interference level associated with a transmission from a high-priority (HP) UE to the first UE for a period of time, wherein the transmission from the HP UE includes an overlap with the scheduled transmission.