# US 12,763,918 B2 · Methods and apparatuses for a physical uplink shared channel (PUSCH) repetition enhancement mechanism for a time division duplex (TDD) scenario > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,763,918 B2 - Document ID: US12763918B2 - Status: Granted - Kind: B2 - Application number: 18/258,120 - Filed: 2020-12-18 - Published: 2024-02-15 - Granted: 2026-10-13 - Earliest claimed: 2020-12-18 - Assignees: Lenovo (Beijing) Limited - Applicants: Lenovo (Beijing) Limited - Inventors: Yingying Li; Zhi Yan; Hongmei Liu; Yuantao Zhang; Haiming Wang - Web page: https://patentgrep.com/patent/US12763918B2 ## CPC - H04L 5/14: Two-way operation using the same type of signal, i.e. duplex - H04L 5/0048: {Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091)} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/1268: of uplink data flows - 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 Embodiments of the present application are related to methods and apparatuses a physical uplink shared channel (PUSCH) repetition enhancement mechanism for a time division duplex (TDD) scenario. A method according to an embodiment of the present application includes: receiving downlink control information (DCI) including a time domain resource assignment field; determining a time domain resource in each of one or more available uplink slots based on the time domain resource assignment field in the DCI, to obtain the determined one or more time domain resources; and transmitting uplink (UL) data on the determined one or more time domain resources. ## Claims ### Claim 1 A user equipment (UE) for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor configured to cause the UE to: receive downlink control information (DCI) including a time domain resource assignment field; determine, based at least in part on the time domain resource assignment field, whether each uplink (UL) slot of a set of UL slots satisfies a condition associated with transmission of a physical uplink shared channel (PUSCH) transmission of a set of PUSCH transmissions, wherein: the set of UL slots includes a special type slot including at least one downlink (DL) symbol, the special type slot includes a set of consecutive symbols in a time domain, the condition is that a maximum symbol total number of the set of consecutive symbols is greater than or equal to a sum of a configured value and a value associated with receiving-transmission transition time, and the value associated with receiving-transmission transition time is greater than 0; select, based at least in part on the time domain resource assignment field, a respective one or more time domain resources from each UL slot of the set of UL slots that satisfies the condition; and transmit UL data via the selected respective one or more time domain resources in each UL slot of the set of UL slots that satisfies the condition, the UL data corresponding to the set of PUSCH transmissions. ### Claim 2 (depends on 1) The UE of claim 1, wherein the special type slot includes the at least one DL symbol and at least one of one or more flexible symbols or an UL symbol. ### Claim 3 (depends on 1) The UE of claim 1, wherein the set of consecutive symbols includes: at least one flexible symbol and at least one UL symbol; one or more flexible symbols; or one or more UL symbols. ### Claim 4 (depends on 1) The UE of claim 1, wherein the configured value is one or more of: configured by radio resource control (RRC) signaling; derived from a start and length indicator value (SLIV), wherein the SLIV is determined based on the time domain resource assignment field; or derived from an allocation length value, wherein the allocation length value is determined based on the time domain resource assignment field. ### Claim 5 (depends on 1) The UE of claim 1, wherein, to select the respective one or more time domain resources, the at least one processor is configured to cause the UE to select, in a slot within the set of UL slots, an available symbol set as one or more of: a set of available symbols of a first occurrence in a time domain; a set of available symbols closest, in the time domain, to a starting symbol of the slot within the set of UL slots, wherein the starting symbol is determined based on the time domain resource assignment field; a set of available symbols not including a physical uplink control channel (PUCCH) resource or a sounding reference signal (SRS) resource, in response to an occurrence, in the time domain, of the set of available symbols not including the PUCCH resource or the SRS resource and a set of available symbols including at least one of a PUCCH resource and a SRS resource; or a set of available symbols including a least symbol total number of a PUCCH resource and a SRS resource, in response to an occurrence, in the time domain, of two or more sets of available symbols including at least one of a PUCCH resource and a SRS resource. ### Claim 6 (depends on 5) The UE of claim 5, wherein a starting symbol of the respective one or more time domain resources in each UL slot of the set of UL slots is determined by at least one of: a symbol of a first occurrence in the time domain within the available symbol set; a flexible symbol of a first occurrence in the time domain within the available symbol set; an UL symbol of a first occurrence in the time domain within the available symbol set; a difference between an allocation length value and a maximum symbol total number of consecutive UL symbols within the available symbol set, wherein the allocation length value is determined based on the time domain resource assignment field; or a margin symbol in the time domain of the respective one or more time domain resources. ### Claim 7 (depends on 6) The UE of claim 6, wherein the margin symbol is determined by at least one of: radio resource control (RRC) signaling; receiving-transmission transition time; a duration of one or more overlapping symbols in the available symbol set, wherein the one or more overlapping symbols carry at least one of a SRS resource and a PUCCH resource; or a starting symbol of the one or more overlapping symbols, an UL symbol of a first occurrence in the time domain within the available symbol set, and the allocation length value. ### Claim 8 A base station for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory, the at least one processor configured to cause the base station to: transmit downlink control information (DCI) including a time domain resource assignment field; determine, based at least in part on the time domain resource assignment field, whether each uplink (UL) slot of a set of UL slots satisfies a condition associated with transmission of a physical uplink shared channel (PUSCH) transmission of a set of PUSCH transmissions, wherein: the set of UL slots includes a special type slot including at least one downlink (DL) symbol, the special type slot includes a set of consecutive symbols in a time domain, the condition is that a maximum symbol total number of the set of consecutive symbols is greater than or equal to a sum of a configured value and a value associated with receiving-transmission transition time, and the value associated with receiving-transmission transition time is greater than 0; select, based at least in part on the time domain resource assignment field, a respective one or more time domain resources from each UL slot of the set of UL slots that satisfies the condition; and receive UL data via the selected respective one or more time domain resources in each UL slot of the set of UL slots that satisfies the condition, the UL data corresponding to the set of PUSCH transmissions. ### Claim 9 (depends on 8) The base station of claim 8, wherein the special type slot includes the at least one DL symbol and at least one of one or more flexible symbols and an UL symbol. ### Claim 10 (depends on 8) The base station of claim 8, wherein the set of consecutive symbols includes at least one of: at least one flexible symbol and at least one UL symbol; one or more flexible symbols; or one or more UL symbols. ### Claim 11 (depends on 8) The base station of claim 8, wherein, to select the respective one or more time domain resources, the at least one processor is configured to cause the base station to select, in a slot within the set of UL slots, an available symbol set as one or more of: a set of available symbols of a first occurrence in a time domain; a set of available symbols closest, in the time domain, to a starting symbol of the slot within the set of UL slots, wherein the starting symbol is determined based on the time domain resource assignment field; a set of available symbols not including a physical uplink control channel (PUCCH) resource or a sounding reference signal (SRS) resource, in response to an occurrence, in the time domain, of the set of available symbols not including the PUCCH resource or the SRS resource and a set of available symbols including at least one of a PUCCH resource and a SRS resource; or a set of available symbols including a least symbol total number of a PUCCH resource and a SRS resource, in response to an occurrence, in the time domain, of two or more sets of available symbols including at least one of a PUCCH resource and a SRS resource. ### Claim 12 (depends on 11) The base station of claim 11, wherein a starting symbol of the respective one or more time domain resources in each UL slot of the set of UL slots is determined by at least one of: a symbol of a first occurrence in the time domain within the available symbol set; a flexible symbol of a first occurrence in the time domain within the available symbol set; an UL symbol of a first occurrence in the time domain within the available symbol set; a difference between an allocation length value and a maximum symbol total number of consecutive UL symbols within the available symbol set, wherein the allocation length value is determined based on the time domain resource assignment field; or a margin symbol in the time domain of the respective one or more time domain resources. ### Claim 13 A method performed by a user equipment (UE), the method comprising: receiving downlink control information (DCI) including a time domain resource assignment field; determining, based at least in part on the time domain resource assignment field, whether each uplink (UL) slot of a set of UL slots satisfies a condition associated with transmission of a physical uplink shared channel (PUSCH) transmission of a set of PUSCH transmissions, wherein: the set of UL slots includes a special type slot including at least one downlink (DL) symbol, the special type slot includes a set of consecutive symbols in a time domain, the condition is that a maximum symbol total number of the set of consecutive symbols is greater than or equal to a sum of a configured value and a value associated with receiving-transmission transition time, and the value associated with receiving-transmission transition time is greater than 0; selecting, based at least in part on the time domain resource assignment field, a respective one or more time domain resources from each UL slot of the set of UL slots that satisfies the condition; and transmitting UL data via the selected respective one or more time domain resources in each UL slot of the set of UL slots that satisfies the condition, the UL data corresponding to the set of PUSCH transmissions. ### Claim 14 (depends on 13) The method of claim 13, wherein the special type slot includes the at least one DL symbol and at least one of one or more flexible symbols or an UL symbol. ### Claim 15 (depends on 13) The method of claim 13, wherein the set of consecutive symbols includes at least one of: at least one flexible symbol and at least one UL symbol; one or more flexible symbols; or one or more UL symbols. ### Claim 16 (depends on 13) The method of claim 13, wherein the configured value comprises at least one of: configured by radio resource control (RRC) signaling; derived from a start and length indicator value (SLIV), wherein the SLIV is determined based on the time domain resource assignment field; or derived from an allocation length value, wherein the allocation length value is determined based on the time domain resource assignment field. ### Claim 17 (depends on 13) The method of claim 13, wherein selecting the respective one or more time domain resources further comprises selecting, in a slot within the set of UL slots, an available symbol set as at least one of: a set of available symbols of a first occurrence in a time domain; a set of available symbols closest, in the time domain, to a starting symbol of the slot within the set of UL slots, wherein the starting symbol is determined based on the time domain resource assignment field; a set of available symbols not including a physical uplink control channel (PUCCH) resource or a sounding reference signal (SRS) resource, in response to an occurrence, in the time domain, of the set of available symbols not including the PUCCH resource or the SRS resource and a set of available symbols including at least one of a PUCCH resource and a SRS resource; or a set of available symbols including a least symbol total number of a PUCCH resource and a SRS resource, in response to an occurrence, in the time domain, of two or more sets of available symbols including at least one of a PUCCH resource and a SRS resource. ### Claim 18 (depends on 1) The UE of claim 1, wherein the configured value is equivalent to an allocation length value determined based at least in part on the time domain resource assignment field. ### Claim 19 (depends on 1) The UE of claim 1, wherein, in response to a UL slot of the set of UL slots not satisfying the condition, the at least one processor is configured to cause the UE to delay the PUSCH transmission corresponding to the UL slot to a next UL slot of the set of UL slots that satisfies the condition. ### Claim 20 (depends on 1) The UE of claim 1, wherein the special type slot further includes one or more flexible symbols and one or more UL symbols, and wherein the at least one DL symbol precedes the one or more flexible symbols and the one or more UL symbols in the time domain.