# US 2023/0054832 A1 · Multi-slot aperiodic sounding reference signal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054832 A1 - Document ID: US20230054832A1 - Status: Published application - Kind: A1 - Application number: 17/759,691 - Filed: 2020-09-04 - Published: 2023-02-23 - Earliest claimed: 2020-02-14 - Assignees: QUALCOMM Incorporated - Applicants: QUALCOMM Incorporated - Inventors: Runxin WANG; Muhammad Sayed Khairy ABDELGHAFFAR; Yu ZHANG; Alexandros MANOLAKOS; Weimin DUAN - Web page: https://patentgrep.com/patent/US20230054832A1 ## CPC - 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)} - H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal} - H04L 5/0053: {Allocation of signalling, i.e. of overhead other than pilot signals} - H04W 72/0446: Resources in time domain, e.g. slots or frames - H04W 72/569: {of the traffic information} - H04L 5/0064: {Rate requirement of the data, e.g. scalable bandwidth, data priority} - H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information} - 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 Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive, from abase station, a sounding reference signal (SRS) configuration indicating a number of candidate slots for transmission of a multi-slot aperiodic SRS (A-SRS); receive, from the base station, an SRS trigger, the SRS trigger comprising an indication of an A-SRS resource set, the A-SRS resource set comprising a plurality of A-SRS resources corresponding to the number of candidate slots; and transmit, in response to the SRS trigger, the multi-slot A-SRS in one or more of a plurality of candidate slots using at least a portion of the A-SRS resource set. Numerous other aspects are provided. ## Claims ### Claim at position 1 1-42. (canceled) ### Claim 43 A user equipment (UE) for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: receive, from a base station (BS), a sounding reference signal (SRS) configuration indicating a number of candidate slots for transmission of a multi-slot aperiodic SRS (A-SRS); receive, from the BS, an SRS trigger, the SRS trigger comprising an indication of an A-SRS resource set, the A-SRS resource set comprising a plurality of A-SRS resources corresponding to the number of candidate slots; and transmit, in response to the SRS trigger, the multi-slot A-SRS in one or more of a plurality of candidate slots using at least a portion of the A-SRS resource set. ### Claim 44 (depends on 43) The UE of claim 43, wherein the SRS trigger is carried in downlink control information. ### Claim 45 (depends on 43) The UE of claim 43, wherein transmitting the multi-slot A-SRS in the plurality of slots is based at least in part on the A-SRS resource set. ### Claim 46 (depends on 43) The UE of claim 43, wherein the one or more processors, to transmit the multi-slot A-SRS, are configured to use a subset of the plurality of A-SRS resources to transmit the multi-slot A-SRS in the plurality of slots. ### Claim 47 (depends on 43) The UE of claim 43, wherein a set of parameters is preconfigured, and wherein the plurality of slots is based at least in part on one or more parameters of the set of parameters, the set of parameters comprising at least one of: an A-SRS duration indication that indicates a specified quantity of slots to be used for transmission of the multi-slot A-SRS, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS, a periodicity indication that indicates a slot periodicity to be used for transmitting the multi-slot A-SRS, a default number of slots to be used for transmitting the multi-slot A-SRS, or a combination thereof. ### Claim 48 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to receive, from the BS, an A-SRS duration indication indicating a specified quantity of slots to be used for transmission of the multi-slot A-SRS, wherein the plurality of slots comprises the specified quantity of slots. ### Claim 49 (depends on 48) The UE of claim 48, wherein the A-SRS duration indication is carried in a radio resource control message, a medium access control (MAC) control element, or downlink control information. ### Claim 50 (depends on 48) The UE of claim 48, wherein the one or more processors are further configured to receive, from the BS, a periodicity indication indicating a slot periodicity to be used for transmitting the multi-slot A-SRS, wherein the plurality of slots is based at least in part on the A-SRS duration indication and the periodicity indication. ### Claim 51 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to receive, from the BS, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS. ### Claim 52 (depends on 51) The UE of claim 51, wherein the maximum duration indication is carried in a radio resource control message, a medium access control (MAC) control element, or downlink control information. ### Claim 53 (depends on 51) The UE of claim 51, wherein the one or more processors are further configured to receive, from the B S, a periodicity indication indicating a slot periodicity to be used for transmitting the multi-slot A-SRS, wherein the plurality of slots is based at least in part on the maximum duration indication and the periodicity indication. ### Claim 54 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to receive, from the base station, a periodicity indication indicating a slot periodicity to be used for transmitting the multi-slot A-SRS. ### Claim 55 (depends on 54) The UE of claim 54, wherein the periodicity indication is carried in a radio resource control message, a medium access control (MAC) control element, or downlink control information. ### Claim 56 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to transmit the multi-slot A-SRS according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is lower relative to a priority associated with a single-slot A-SRS. ### Claim 57 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to transmit the multi-slot A-SRS according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is lower relative to: a priority associated with a physical uplink control channel (PUCCH) transmission carrying a hybrid automatic repeat request acknowledgement, a priority associated with a PUCCH transmission carrying a scheduling request, a priority associated with a PUCCH transmission carrying SP channel state information (CSI), a priority associated with a PUCCH transmission carrying periodic CSI, a priority associated with a PUCCH transmission carrying an SP Layer 1 Reference Signal Received Power (RSRP) report, a priority associated with a PUCCH transmission carrying a periodic Layer 1 RSRP report, or a combination thereof. ### Claim 58 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to transmit the multi-slot A-SRS according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is higher relative to: a priority associated with a semi-persistent (SP) SRS, a priority associated with a periodic SRS, a priority associated with a physical uplink control channel (PUCCH) transmission carrying SP channel state information (CSI), a priority associated with a PUCCH transmission carrying periodic CSI, a priority associated with a PUCCH transmission carrying an SP Layer 1 Reference Signal Received Power (RSRP) report, a priority associated with a PUCCH transmission carrying a periodic Layer 1 RSRP report, or a combination thereof. ### Claim 59 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to transmit the multi-slot A-SRS using carrier aggregation and according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is lower relative to: a priority associated with a physical uplink shared channel (PUSCH) transmission carrying a hybrid automatic repeat request acknowledgement, a priority associated with a PUSCH transmission carrying a positive scheduling request (SR), a priority associated with a PUSCH transmission carrying a rank indicator (RI), a priority associated with a PUSCH transmission carrying a channel state information reference signal resource indicator (CRI), a priority associated with a PUSCH transmission carrying aperiodic CSI, a priority associated with a physical uplink control channel (PUCCH) transmission carrying a positive SR, a priority associated with a PUCCH transmission carrying an RI, a priority associated with a PUCCH transmission carrying a CRI, a priority associated with a physical random access channel transmission, or a combination thereof. ### Claim 60 (depends on 43) The UE of claim 43, wherein the one or more processors are further configured to transmit the multi-slot A-SRS using carrier aggregation and according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is higher relative to: a priority associated with a physical uplink shared channel (PUSCH) transmission carrying periodic channel state information (CSI) having only a channel quality indicator (CQI), a priority associated with a PUSCH transmission carrying periodic CSI having only a precoding matrix indicator (PMI), a priority associated with a PUSCH transmission carrying aperiodic CSI, a priority associated with a PUSCH transmission carrying aperiodic CSI having only a CQI, a priority associated with a PUSCH transmission carrying aperiodic CSI having only a PMI, a priority associated with a physical uplink control channel (PUCCH) transmission carrying periodic CSI having only a CQI, a priority associated with a PUCCH transmission carrying periodic CSI having only a PMI, an SRS transmission on a serving cell configured for PUSCH and PUCCH transmission that is different from a serving cell on which the multi-slot A-SRS is transmitted, or a combination thereof. ### Claim 61 A base station for wireless communication, comprising: a memory; and one or more processors, coupled to the memory, configured to: transmit, to a user equipment (UE), a sounding reference signal (SRS) configuration indicating a number of candidate slots for transmission of a multi-slot aperiodic SRS (A-SRS); transmit, to the UE, a sounding reference signal (SRS) trigger, the SRS trigger comprising an indication of an A-SRS resource set, the A-SRS resource set comprising a plurality of A-SRS resources corresponding to the number of candidate slots; and receive, in response to the SRS trigger, the multi-slot A-SRS that is transmitted in one or more of a plurality of candidate slots using at least a portion of the A-SRS resource set. ### Claim 62 (depends on 61) The base station of claim 61, wherein the SRS trigger is carried in downlink control information. ### Claim 63 (depends on 61) The base station of claim 61, wherein the multi-slot A-SRS transmitted in the plurality of slots is based at least in part on the A-SRS resource set. ### Claim 64 (depends on 61) The base station of claim 61, wherein a set of parameters is preconfigured, and wherein the plurality of slots is based at least in part on one or more parameters of the set of parameters, the set of parameters comprising at least one of: an A-SRS duration indication that indicates a specified quantity of slots to be used for transmission of the multi-slot A-SRS, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS, a periodicity indication that indicates a slot periodicity to be used for transmitting the multi-slot A-SRS, a default number of slots to be used for transmitting the multi-slot A-SRS, or a combination thereof. ### Claim 65 (depends on 61) The base station of claim 61, wherein the one or more processors are further configured to transmit, to the UE, an A-SRS duration indication indicating a specified quantity of slots to be used for transmission of the multi-slot A-SRS, wherein the plurality of slots comprises the specified quantity of slots. ### Claim 66 (depends on 61) The base station of claim 61, wherein the one or more processors are further configured to transmit, to the UE, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS. ### Claim 67 (depends on 61) The base station of claim 61, wherein the one or more processors are further configured to transmit, to the UE, a periodicity indication indicating a slot periodicity to be used for transmitting the multi-slot A-SRS. ### Claim 68 (depends on 61) The base station of claim 61, wherein the multi-slot A-SRS is transmitted according to a priority associated with the multi-slot A-SRS, wherein the priority associated with the multi-slot A-SRS is lower relative to a priority associated with a single-slot A-SRS. ### Claim 69 A method of wireless communication performed by a user equipment (UE), comprising: receiving, from a base station (BS), a sounding reference signal (SRS) configuration indicating a number of candidate slots for transmission of a multi-slot aperiodic SRS (A-SRS); receiving, from the BS, an SRS trigger, the SRS trigger comprising an indication of an A-SRS resource set, the A-SRS resource set comprising a plurality of A-SRS resources corresponding to the number of candidate slots; and transmitting, in response to the SRS trigger, the multi-slot A-SRS in one or more of a plurality of candidate slots using at least a portion of the A-SRS resource set. ### Claim 70 (depends on 69) The method of claim 69, wherein a set of parameters is preconfigured, and wherein the plurality of slots is based at least in part on one or more parameters of the set of parameters, the set of parameters comprising at least one of: an A-SRS duration indication that indicates a specified quantity of slots to be used for transmission of the multi-slot A-SRS, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS, a periodicity indication that indicates a slot periodicity to be used for transmitting the multi-slot A-SRS, a default number of slots to be used for transmitting the multi-slot A-SRS, or a combination thereof. ### Claim 71 A method of wireless communication performed by a base station, comprising: transmitting, to a user equipment (UE), a sounding reference signal (SRS) configuration indicating a number of candidate slots for transmission of a multi-slot aperiodic SRS (A-SRS); transmitting, to the UE, a sounding reference signal (SRS) trigger, the SRS trigger comprising an indication of an A-SRS resource set, the A-SRS resource set comprising a plurality of A-SRS resources corresponding to the number of candidate slots; and receiving, in response to the SRS trigger, the multi-slot A-SRS that is transmitted in one or more of a plurality of candidate slots using at least a portion of the A-SRS resource set. ### Claim 72 (depends on 71) The method of claim 71, wherein a set of parameters is preconfigured, and wherein the plurality of slots is based at least in part on one or more parameters of the set of parameters, the set of parameters comprising at least one of: an A-SRS duration indication that indicates a specified quantity of slots to be used for transmission of the multi-slot A-SRS, a maximum duration indication indicating a maximum quantity of consecutive slots that can be used for transmitting the multi-slot A-SRS, a periodicity indication that indicates a slot periodicity to be used for transmitting the multi-slot A-SRS, a default number of slots to be used for transmitting the multi-slot A-SRS, or a combination thereof.