# US 12,604,332 B2 · Techniques for sending assistance information for cancelling interference in wireless communications > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,332 B2 - Document ID: US12604332B2 - Status: Granted - Kind: B2 - Application number: 18/366,421 - Filed: 2023-08-07 - Published: 2024-04-04 - Granted: 2026-04-14 - Earliest claimed: 2022-09-22 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Chu-Hsiang Huang; Jae Won Yoo; Andreas Maximilian Schenk; Jae Ho Ryu; Hari Sankar; Gaurav Nigam; Changhwan Park - Web page: https://patentgrep.com/patent/US12604332B2 ## CPC - H04L 1/0009: {by adapting the channel coding (H04L1/1812 takes precedence)} - H04W 72/541: using the level of interference - H04L 1/0003: {by switching between different modulation schemes} - H04L 1/0025: {Transmission of mode-switching indication} - H04W 72/121: for groups of terminals or users - H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract Aspects described herein relate to receiving, from a network node, an indication of information related to a configuration, including at least one of a modulation and coding scheme (MCS), a physical downlink shared channel (PDSCH) duration, a scrambling sequence, or a reference signal location, used for transmitting downlink signals to one or more co-scheduled UEs, receiving, from the network node, a downlink signal intended for the UE, wherein the signal is interfered by one or more interference signals transmitted to the one or more co-scheduled UEs, and removing, based on the indication, the one or more interference signals from the downlink signal. Other aspects relate to transmitting the information and downlink signals. ## Claims ### Claim 1 An apparatus for wireless communication, comprising: a transceiver; one or more memories configured to, individually or in combination, store instructions; and one or more processors communicatively coupled with the one or more memories, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to: receive, from a network node, an indication of information used by the network node for transmitting downlink signals to one or more co-scheduled UEs scheduled with resources that are spatially multiplexed with resources scheduled for the apparatus, including at least one of a modulation and coding scheme (MCS) used for transmitting the downlink signals to the one or more co-scheduled UEs, a physical downlink shared channel (PDSCH) duration used for transmitting the downlink signals to the one or more co-scheduled UEs, a scrambling sequence used for transmitting the downlink signals to the one or more co-scheduled UEs, or a reference signal location used for transmitting the downlink signals to the one or more co-scheduled UEs; receive, from the network node, a downlink signal intended for the apparatus, wherein the downlink signal is interfered by one or more interference signals transmitted to the one or more co-scheduled UEs; and remove, based on the indication, the one or more interference signals from the downlink signal. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the information related to the MCS indicates an MCS index table used for transmitting the downlink signals to each of the one or more co-scheduled UEs. ### Claim 3 (depends on 2) The apparatus of claim 2, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the information indicating the MCS index table in radio resource control (RRC) signaling. ### Claim 4 (depends on 1) The apparatus of claim 1, wherein the information related to MCS includes an indication of whether MCS index tables used for transmitting the downlink signals to the one or more co-scheduled UEs are the same as a configured MCS index table for transmitting downlink signals to the apparatus. ### Claim 5 (depends on 4) The apparatus of claim 4, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the indication of whether the MCS index tables are the same in radio resource control (RRC) signaling. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the information related to MCS includes an indication of a maximum MCS table used for transmitting the downlink signals to the one or more co-scheduled UEs. ### Claim 7 (depends on 6) The apparatus of claim 6, wherein the indication of the maximum MCS table indicates whether the maximum MCS table is of a certain quadrature amplitude modulation (QAM) or not, wherein the certain QAM is one of 1024QAM, 256QAM, or 64QAM. ### Claim 8 (depends on 6) The apparatus of claim 6, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the indication of the maximum MCS table in radio resource control (RRC) signaling. ### Claim 9 (depends on 1) The apparatus of claim 1, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive, from the network node, a second indication of whether the one or more interference signals on each of multiple interfering layers have a same modulation order on each PRB allocated to the apparatus. ### Claim 10 (depends on 9) The apparatus of claim 9, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the second indication in radio resource control (RRC) signaling, media access control (MAC) control element (CE), or downlink control information (DCI). ### Claim 11 (depends on 1) The apparatus of claim 1, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive, from the network node, a second indication of whether all physical downlink shared channel (PDSCH) symbols in a slot of the downlink signal are the same across a set of co-scheduled UEs. ### Claim 12 (depends on 10) The apparatus of claim 10, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the second indication in radio resource control (RRC) signaling, media access control (MAC) control element (CE), or downlink control information (DCI). ### Claim 13 (depends on 12) The apparatus of claim 12, the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to receive the information in downlink control information (DCI) signaling. ### Claim 14 An apparatus for wireless communication, comprising: a transceiver; one or more memories configured to, individually or in combination, store instructions; and one or more processors communicatively coupled with the one or more memories, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to: transmit, for a user equipment (UE), an indication of information used by the apparatus for transmitting downlink signals to one or more co-scheduled UEs scheduled with resources that are spatially multiplexed with resources scheduled for the UE, including at least one of a modulation and coding scheme (MCS) used for transmitting the downlink signals to the one or more co-scheduled UEs, a physical downlink shared channel (PDSCH) duration used for transmitting the downlink signals to the one or more co-scheduled UEs, a scrambling sequence used for transmitting the downlink signals to the one or more co-scheduled UEs, or a reference signal location used for transmitting the downlink signals to the one or more co-scheduled UEs; and transmit a downlink signal intended for the UE, wherein the downlink signal is interfered by one or more interference signals transmitted to the one or more co-scheduled UE. ### Claim 15 (depends on 14) The apparatus of claim 14, wherein the information related to the MCS indicates an MCS index table used for transmitting the downlink signals to each of the one or more co-scheduled UEs. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit the information indicating the MCS index table in radio resource control (RRC) signaling. ### Claim 17 (depends on 14) The apparatus of claim 14, wherein the information related to MCS includes an indication of whether MCS index tables used for transmitting the downlink signals to the one or more co-scheduled UEs are the same as a configured MCS index table for transmitting downlink signals to the UE. ### Claim 18 (depends on 17) The apparatus of claim 17, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit the indication of whether the MCS index tables are the same in radio resource control (RRC) signaling. ### Claim 19 (depends on 14) The apparatus of claim 14, wherein the information related to MCS includes an indication of a maximum MCS table used for transmitting the downlink signals to the one or more co-scheduled UEs. ### Claim 20 (depends on 19) The apparatus of claim 19, wherein the indication of the maximum MCS table indicates whether the maximum MCS table is of a certain quadrature amplitude modulation (QAM) or not, wherein the certain QAM is one of 1024QAM, 256QAM, or 64QAM. ### Claim 21 (depends on 19) The apparatus of claim 19, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit the indication of the maximum MCS table in radio resource control (RRC) signaling. ### Claim 22 (depends on 14) The apparatus of claim 14, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit, for the UE, a second indication of whether the one or more interference signals on each of multiple interfering layers have a same modulation order. ### Claim 23 (depends on 22) The apparatus of claim 22, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit the second indication in radio resource control (RRC) signaling, media access control (MAC) control element (CE), or downlink control information (DCI). ### Claim 24 (depends on 14) The apparatus of claim 14, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit, for the UE, a second indication of whether all physical downlink shared channel (PDSCH) symbols in a slot of the downlink signal are the same across a set of co-scheduled UEs. ### Claim 25 (depends on 24) The apparatus of claim 24, wherein the one or more processors are, individually or in combination, configured to execute the instructions to cause the apparatus to transmit the second indication in radio resource control (RRC) signaling, media access control (MAC) control element (CE), or downlink control information (DCI). ### Claim 26 (depends on 14) The apparatus of claim 14, wherein the information related to the MCS indicates whether a single modulation order is allocated for the one or more co-scheduled UEs that have a same demodulation reference signal (DMRS) sequence as the UE. ### Claim 27 A method for wireless communication at a user equipment (UE), comprising: receiving, from a network node, an indication of information used by the network node for transmitting downlink signals to one or more co-scheduled UEs scheduled with resources that are spatially multiplexed with resources scheduled for the UE, including at least one of a modulation and coding scheme (MCS) used for transmitting the downlink signals to the one or more co-scheduled UEs, a physical downlink shared channel (PDSCH) duration used for transmitting the downlink signals to the one or more co-scheduled UEs, a scrambling sequence used for transmitting the downlink signals to the one or more co-scheduled UEs, or a reference signal location used for transmitting the downlink signals to the one or more co-scheduled UEs; receiving, from the network node, a downlink signal intended for the UE, wherein the downlink signal is interfered by one or more interference signals transmitted to the one or more co-scheduled UE; and removing, based on the indication, the one or more interference signals from the downlink signal. ### Claim 28 (depends on 27) The method of claim 27, wherein the information related to the MCS indicates an MCS index table used for transmitting the downlink signals to each of the one or more co-scheduled UEs. ### Claim 29 A method for wireless communication at a network node, comprising: transmitting, for a user equipment (UE), an indication of information used by the network node for transmitting downlink signals to one or more co-scheduled UEs scheduled with resources that are spatially multiplexed with resources scheduled for the UE, including at least one of a modulation and coding scheme (MCS) used for transmitting the downlink signals to the one or more co-scheduled UEs, a physical downlink shared channel PDSCH) duration used for transmitting the downlink signals to the one or more co-scheduled UEs, a scrambling sequence used for transmitting the downlink signals to the one or more co-scheduled UEs, or a reference signal location used for transmitting the downlink signals to the one or more co-scheduled UEs; and transmitting a downlink signal intended for the UE, wherein the downlink signal is interfered by one or more interference signals transmitted to the one or more co-scheduled UE. ### Claim 30 (depends on 29) The method of claim 29, wherein the information related to the MCS indicates an MCS index table used for transmitting the downlink signals to each of the one or more co-scheduled UEs.