# US 12,604,316 B2 · Methods and apparatus of PDSCH processing procedure time derivation for HARQ-ACK feedback of PDSCH scheduled by enhanced PDCCH E > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,604,316 B2 - Document ID: US12604316B2 - Status: Granted - Kind: B2 - Application number: 18/290,168 - Filed: 2021-05-10 - Published: 2024-08-08 - Granted: 2026-04-14 - Earliest claimed: 2021-05-10 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Yi Zhang; Chenxi Zhu; Bingchao Liu; Wei Ling; Lingling Xiao - Web page: https://patentgrep.com/patent/US12604316B2 ## CPC - H04L 1/1854: {Scheduling and prioritising arrangements} - H04W 72/1273: of downlink data flows - H04L 1/1812: Hybrid protocols; Hybrid automatic repeat request [HARQ] - H04L 5/0055: {Physical resource allocation for ACK/NACK (for physical mapping arrangements in ARQ protocols H04L1/1861)} - H04L 5/0078: {Timing of allocation} - H04W 72/232: the control data signalling from the physical layer, e.g. DCI signalling - 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 Methods and apparatus of Physical Downlink Shared Channel (PDSCH) processing procedure time derivation for Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) feedback of PDSCH scheduled by enhanced Physical Downlink Control Channel (PDCCH) are disclosed. The method includes: receiving, by a receiver, a Physical Downlink Shared Channel (PDSCH) that is scheduled by a Physical Downlink Control Channel (PDCCH) transmitted with a plurality of repetitions, wherein the plurality of repetitions including a first PDCCH and a second PDCCH; deriving, by a processor, a PDSCH processing procedure time based on: a first number of overlapping symbols between the first PDCCH and the PDSCH, a second number of overlapping symbols between the second PDCCH and the PDSCH, and/or an additional processing time for processing of the PDCCH transmitted with a plurality of repetitions; and transmitting, by a transmitter, a valid Hybrid Automatic Repeat Request Acknowledgement (HARQ-ACK) message no earlier than the PDSCH processing procedure time. ## Claims ### Claim 1 A method performed by a user equipment (UE), the method comprising: receiving a physical downlink shared channel (PDSCH) that is scheduled by a physical downlink control channel (PDCCH) transmitted with a plurality of repetitions, the plurality of repetitions including a first PDCCH and a second PDCCH; deriving a PDSCH processing procedure time based on at least one of: a larger one of a first number of overlapping symbols between the first PDCCH and the PDSCH and a second number of overlapping symbols between the second PDCCH and the PDSCH; or an additional processing time for processing of the PDCCH transmitted with the plurality of repetitions; and transmitting a valid hybrid automatic repeat request acknowledgement (HARQ-ACK) message no earlier than the PDSCH processing procedure time. ### Claim 2 (depends on 1) The method of claim 1, wherein: the second PDCCH starts later than the first PDCCH; the PDSCH processing procedure time is derived based on the second number of overlapping symbols; and the second number of overlapping symbols is no smaller than the first number of overlapping symbols. ### Claim 3 (depends on 1) The method of claim 1, wherein: the first PDCCH and the second PDCCH start from a same symbol: the second PDCCH ends later than the first PDCCH; and the PDSCH processing procedure time is derived based on the second number of overlapping symbols. ### Claim 4 A network equipment (NE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the NE to: transmit a physical downlink control channel (PDCCH) with a plurality of repetitions and a physical downlink shared channel (PDSCH) that is scheduled by the PDCCH with the plurality of repetitions, the plurality of repetitions including a first PDCCH and a second PDCCH; derive a PDSCH processing procedure time based on at least one of: a larger one of a first number of overlapping symbols between the first PDCCH and the PDSCH and a second number of overlapping symbols between the second PDCCH and the PDSCH; or an additional processing time for processing of the PDCCH transmitted with the plurality of repetitions; and receive a valid hybrid automatic repeat request acknowledgement (HARQ-ACK) message no earlier than the PDSCH processing procedure time. ### Claim 5 (depends on 4) The NE of claim 4, wherein: the second PDCCH starts later than the first PDCCH; the PDSCH processing procedure time is derived based on the second number of overlapping symbols; and the second number of overlapping symbols is no smaller than the first number of overlapping symbols. ### Claim 6 A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled with the at least one memory and configured to cause the UE to: receive a physical downlink shared channel (PDSCH) that is scheduled by a physical downlink control channel (PDCCH) transmitted with a plurality of repetitions, the plurality of repetitions including a first PDCCH and a second PDCCH; derive a PDSCH processing procedure time based on at least one of: a larger one of a first number of overlapping symbols between the first PDCCH and the PDSCH and a second number of overlapping symbols between the second PDCCH and the PDSCH; or an additional processing time for processing the PDCCH transmitted with the plurality of repetitions; and transmit a valid hybrid automatic repeat request acknowledgement (HARQ-ACK) message no earlier than the PDSCH processing procedure time. ### Claim 7 (depends on 6) The UE of claim 6, wherein: the second PDCCH starts later than the first PDCCH; the PDSCH processing procedure time is derived based on the second number of overlapping symbols; and the second number of overlapping symbols is no smaller than the first number of overlapping symbols. ### Claim 8 (depends on 6) The UE of claim 6, wherein: the first PDCCH and the second PDCCH start from a same symbol; the second PDCCH ends later than the first PDCCH; and the PDSCH processing procedure time is derived based on the second number of overlapping symbols. ### Claim 9 (depends on 6) The UE of claim 6, wherein: the PDSCH processing procedure time is derived based on an effective number of overlapping symbols of a first set of symbols and a second set of symbols; the first set of symbols including overlapping symbols between the first PDCCH and the PDSCH; and the second set of symbols including overlapping symbols between the second PDCCH and the PDSCH. ### Claim 10 (depends on 9) The UE of claim 9, wherein the effective number of overlapping symbols is derived from the first number of overlapping symbols, the second number of overlapping symbols, and a third number of overlapping symbols between the first set of symbols and the second set of symbols. ### Claim 11 (depends on 10) The UE of claim 10, wherein the second PDCCH ends no earlier than the first PDCCH and later than the PDSCH, and the effective number of overlapping symbols is further derived from a fourth number of symbols between an end of the second PDCCH and an end of the PDSCH. ### Claim 12 (depends on 6) The UE of claim 6, wherein the additional processing time is explicitly obtained from a specific symbol number of UE capability reporting. ### Claim 13 (depends on 6) The UE of claim 6, wherein the additional processing time is implicitly derived from UE capability reporting for a required number of blind detections for the first PDCCH and the second PDCCH. ### Claim 14 (depends on 13) The UE of claim 13, wherein a one-to-one mapping is defined between the additional processing time and the required number of blind detections. ### Claim 15 (depends on 6) The UE of claim 6, wherein the PDSCH processing procedure time is derived based on a sum of the first number of overlapping symbols and the second number of overlapping symbols. ### Claim 16 (depends on 6) The UE of claim 6, wherein: the first PDCCH ends earlier than a start of the second PDCCH, thereby forming a gap between the first PDCCH and the second PDCCH; and the PDSCH processing procedure time is derived further based on a third number of symbols in the gap between the first PDCCH and the second PDCCH. ### Claim 17 A processor for wireless communication, comprising: at least one controller coupled with at least one memory and configured to cause the processor to: receive a physical downlink shared channel (PDSCH) that is scheduled by a physical downlink control channel (PDCCH) transmitted with a plurality of repetitions, the plurality of repetitions including a first PDCCH and a second PDCCH; derive a PDSCH processing procedure time based on at least one of: a larger one of a first number of overlapping symbols between the first PDCCH and the PDSCH and a second number of overlapping symbols between the second PDCCH and the PDSCH; or an additional processing time for processing the PDCCH transmitted with the plurality of repetitions; and transmit a valid hybrid automatic repeat request acknowledgement (HARQ-ACK) message no earlier than the PDSCH processing procedure time. ### Claim 18 (depends on 17) The processor of claim 17, wherein: the second PDCCH starts later than the first PDCCH; the PDSCH processing procedure time is derived based on the second number of overlapping symbols; and the second number of overlapping symbols is no smaller than the first number of overlapping symbols. ### Claim 19 (depends on 17) The processor of claim 17, wherein: the first PDCCH and the second PDCCH start from a same symbol: the second PDCCH ends later than the first PDCCH; and the PDSCH processing procedure time is derived based on the second number of overlapping symbols. ### Claim 20 (depends on 17) The processor of claim 17, wherein: the PDSCH processing procedure time is derived based on an effective number of overlapping symbols of a first set of symbols and a second set of symbols; the first set of symbols including overlapping symbols between the first PDCCH and the PDSCH; and the second set of symbols including overlapping symbols between the second PDCCH and the PDSCH.