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KR-20260066079-A - Physical sidelink feedback channel transmissions for non-adjacent resource block sets in unlicensed sidelink communications

KR20260066079AKR 20260066079 AKR20260066079 AKR 20260066079AKR-20260066079-A

Abstract

Various aspects of the present disclosure generally relate to wireless communication. Some aspects of the techniques described herein may facilitate physical sidelink feedback channel (PSFCH) transmissions to non-adjacent resource block (RB) sets. In some aspects, a user equipment (UE) may perform a PSFCH selection process to select PSFCH communications, and if the remaining PSFCH communications are still located in non-adjacent RB sets, the UE may continue to drop PSFCH communications based on one or more rules. In some aspects, the UE may first perform PSFCH drop operations to form adjacent PSFCH transmissions between RB sets. If the PSFCH communication(s) in the resulting adjacent RB sets exceed the UE's capacity, the UE may perform PSFCH drop to select PSFCH communications for transmission. In some aspects, the UE may use common interlacing to form adjacent PSFCH transmissions between RB sets.

Inventors

  • 천, 스이
  • 리우, 친-하오
  • 쑨, 징
  • 장, 샤오샤
  • 쉬, 창롱
  • 구오, 샤오전
  • 양, 루안샤
  • 쉬, 하오

Assignees

  • 퀄컴 인코포레이티드

Dates

Publication Date
20260512
Application Date
20230928

Claims (20)

  1. As a device for wireless communication in user equipment (UE), One or more memories for storing processor-executable code; and It includes one or more processors coupled with the one or more memories, wherein at least one of the one or more processors allows the UE to, To monitor at least one sidelink channel associated with the unlicensed spectrum for multiple sidelink communications; and To transmit a subset of PSFCH (physical sidelink feedback channel) communications among a set of PSFCH communications using adjacent second sets of multiple RBs (resource blocks) in the frequency domain. A device for wireless communication in user equipment, configured such that the second plurality of RB sets are selected from among the first plurality of RB sets corresponding to the set of PSFCH communications, and the first plurality of RB sets are selected using an initial PSFCH selection process.
  2. In paragraph 1, A device for wireless communication in user equipment, wherein the second plurality of RB sets are selected using an additional PSFCH selection process, and the additional PSFCH selection process includes a continuation of the initial PSFCH selection process.
  3. In paragraph 1, A device for wireless communication in user equipment, wherein the second plurality of RB sets are selected using a set of weighted priority values, and each weighted priority value of the set of weighted priority values is associated with an individual PSFCH communication of the set of PSFCH communications.
  4. In paragraph 3, A device for wireless communication in a user device, wherein the second plurality of RB sets include a first RB set having a first weighted priority value among the sets of weighted priority values, the second plurality of RB sets omits a second RB set having a second weighted priority value among the sets of weighted priority values, and the second weighted priority value is higher than the first weighted priority value.
  5. In paragraph 4, A device for wireless communication in user equipment, wherein the first weighted priority value comprises the average priority value of two or more priority values corresponding to two or more PSFCH communications among the set of PSFCH communications associated with the first RB set.
  6. In paragraph 4, A device for wireless communication in user equipment, wherein the first weighted priority value includes the highest priority value among two or more priority values corresponding to two or more PSFCH communications among the set of PSFCH communications associated with the first RB set.
  7. In paragraph 4, A device for wireless communication in user equipment, wherein the first weighted priority value includes the lowest priority value among two or more priority values corresponding to two or more PSFCH communications among the set of PSFCH communications associated with the first RB set.
  8. In paragraph 4, A device for wireless communication in user equipment, wherein the first weighted priority value comprises a function of two or more priority values corresponding to each of two or more PSFCH communications among the set of PSFCH communications and the first RB set, and the function comprises the product of a second weighted priority value associated with the first RB set and a quantity of PSFCH communications associated with the first RB set.
  9. In paragraph 2, A device for wireless communication in user equipment, wherein the second plurality of RB sets are selected based on the selection of a first group of adjacent RB sets among the first plurality of RB sets using a set of weighted priority values, and each weighted priority value of the set of weighted priority values is associated with an individual group of adjacent RB sets.
  10. In Paragraph 9, A device for wireless communication in a user device, wherein the second plurality of RB sets comprises a first group of adjacent RB sets, the second plurality of RB sets omits a second group of adjacent RB sets having a second weighted priority value among the sets of weighted priority values, and the second weighted priority value is higher than the first weighted priority value.
  11. In Paragraph 9, A device for wireless communication in user equipment, wherein the first weighted priority value includes a function of two or more priority values corresponding to each of two or more RB sets among a first group of adjacent RB sets, and the function is associated with a quantity of PSFCH communications associated with the first group of adjacent RB sets.
  12. As a device for wireless communication in user equipment (UE), One or more memories for storing processor-executable code; and It includes one or more processors coupled with the one or more memories, wherein at least one of the one or more processors allows the UE to, To monitor at least one sidelink channel associated with the unlicensed spectrum for multiple sidelink communications; and To transmit a subset of PSFCH communications among the set of PSFCH communications by using second multiple resource block (RB) sets selected using a group-based selection operation among first multiple resource block (RB) sets corresponding to the set of PSFCH (physical sidelink feedback channel) communications associated with the plurality of sidelink communications. A device for wireless communication in user equipment configured.
  13. In Paragraph 12, A device for wireless communication in user equipment, wherein the second plurality of RB sets are selected based on the selection of a first group of adjacent RB sets among the first plurality of RB sets using a set of weighted priority values, and each weighted priority value of the set of weighted priority values is associated with an individual group of adjacent RB sets.
  14. In Paragraph 13, A device for wireless communication in a user device, wherein the second plurality of RB sets comprises a first group of adjacent RB sets, the second plurality of RB sets omits a second group of adjacent RB sets having a second weighted priority value among the sets of weighted priority values, and the second weighted priority value is higher than the first weighted priority value.
  15. In Paragraph 13, A device for wireless communication in user equipment, wherein a first group of adjacent RB sets comprises at least two RB sets, and each of the at least two RB sets is associated with at least one of an equivalent COT (channel occupancy time) state or an equivalent energy level.
  16. In paragraph 15, A device for wireless communication in user equipment, wherein the above equivalent energy level includes at least one of a received signal strength indicator or a reference signal received power.
  17. In paragraph 15, A device for wireless communication in user equipment, wherein an indication of the above equivalent energy level is maintained in one or more memories of the UE.
  18. In paragraph 15, A device for wireless communication in user equipment, wherein at least one of the above one or more processors is further configured to allow the UE to receive a radio resource control message indicating the equivalent energy level.
  19. In Paragraph 12, A device for wireless communication in user equipment, wherein the second plurality of RB sets are additionally based on a PSFCH drop operation associated with the third plurality of RB sets, and the third plurality of RB sets are selected from the first plurality of RB sets using the group-based selection operation.
  20. In Paragraph 19, A device for wireless communication in user equipment, wherein the second plurality of RB sets omits at least one RB set among the third plurality of RB sets, based on the fact that the at least one RB set includes the outermost RB set among the third plurality of RB sets.

Description

Physical sidelink feedback channel transmissions for non-adjacent resource block sets in unlicensed sidelink communications The aspects of the present disclosure generally relate to wireless communication, and specifically to techniques and apparatus for transmitting physical sidelink feedback channels to sets of non-adjacent resource blocks in unlicensed sidelink communications. Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. Conventional wireless communication systems may utilize multiple-access technologies that support communication with multiple users by sharing available system resources (e.g., bandwidth or transmit power). Examples of such multiple-access technologies include CDMA (code division multiple access) systems, TDMA (time division multiple access) systems, FDMA (frequency division multiple access) systems, OFDMA (orthogonal frequency division multiple access) systems, SC-FDMA (single-carrier frequency division multiple access) systems, TD-SCDMA (time division synchronous code division multiple access) systems, and LTE (Long Term Evolution). LTE/LTE-Advanced is a set of enhancements to the UMTS (Universal Mobile Telecommunications System) mobile standard released by the 3GPP (Third Generation Partnership Project). The above multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at the city, national, regional, or global levels. NR (New Radio), which can also be referred to as 5G, is a set of enhancements to the LTE mobile standard announced by 3GPP. NR is designed to better support mobile broadband internet access by improving spectrum efficiency, lowering costs, enhancing services, utilizing new spectrum, and using CP-OFDM (Orthogonal Frequency-Division Multiplexing with CP (Cyclic Prefix)) on the downlink and CP-OFDM or SC-FDM (Single-Carrier Frequency Division Multiplexing) (also known as DFT-s-OFDM (Discrete Fourier Transform Spread OFDM)) on the uplink, as well as supporting beamforming, MIMO (Multiple-Input Multiple-Output) antenna technology, and carrier aggregation to integrate better with other open standards. As the demand for mobile broadband access continues to grow, further improvements in LTE, NR, and other radio access technologies remain useful. In unlicensed sidelink communications, a User Equipment (UE) may communicate with one or more other UEs via a sidelink channel. To promote the reliability of communication, a feedback channel may be used by the UE to transmit feedback to indicate whether the UE has successfully received and decoded communications from one or more other UEs. Some UEs support the transmission of simultaneous feedback signals through adjacent resource block sets, while others support the transmission of simultaneous feedback signals through non-adjacent resource block sets. Some aspects described herein relate to a device for wireless communication in a user device (UE). The device may include one or more memories for storing processor-executable code, and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured to enable the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. At least one of the one or more processors may be configured to enable the UE to transmit a subset of PSFCH communications among a set of PSFCH (physical sidelink feedback channel) communications using a second set of adjacent resource blocks (RBs) in the frequency domain, wherein the second set of RBs is selected from a first set of RBs corresponding to the set of PSFCH communications, and the first set of RBs is selected using a PSFCH selection process. Some aspects described herein relate to an apparatus for wireless communication in a UE. The apparatus may include one or more memories storing processor-executable code, and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured to enable the UE to monitor at least one sidelink channel associated with unlicensed spectrum for a plurality of sidelink communications. At least one of the one or more processors may be configured to enable the UE to transmit a subset of PSFCH communications among a set of PSFCH communications using a second plurality of RB sets selected by a group-based selection operation among a first plurality of RB sets corresponding to a set of PSFCH communications associated with a plurality of sidelink communications. Some aspects described herein relate to an apparatus for wireless communication in a UE. The apparatus may include one or more memories storing processor-executable code, and one or more processors coupled to the one or more memories. At least one of the one or more processors may be configured