US-12628164-B2 - Sidelink transmissions using slot aggregation

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first user equipment (UE) may transmit, to a second UE, a sidelink transmission that spans multiple aggregated slots, wherein a first symbol in a slot of the sidelink transmission enables a decoding of the sidelink transmission by the second UE. The first UE may receive, from the second UE, a response based at least in part on the sidelink transmission that spans the multiple aggregated slots. Numerous other aspects are described.

Inventors

• Gabi SARKIS
• Guangyi Liu
• Tien Viet Nguyen
• Kapil Gulati
• Wanshi Chen

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260512

Application Date

20220607

Claims (20)

1. 1 . An apparatus for wireless communication at a first user equipment (UE), comprising: a memory; and one or more processors, coupled to the memory, configured to: transmit, to a second UE, a sidelink transmission that spans multiple aggregated slots, wherein a first symbol in a slot of the sidelink transmission enables a decoding of the sidelink transmission by the second UE, and wherein a gap symbol between the multiple aggregated slots is replaced by a physical sidelink shared channel (PSSCH) symbol that includes redundancy information or unique information; and receive, from the second UE, a response based at least in part on the sidelink transmission that spans the multiple aggregated slots, wherein the first UE is allowed to use slot aggregation based at least in part on a PSSCH bandwidth allocation size being greater than or equal to a bandwidth threshold.
2. 2 . The apparatus of claim 1 , wherein the redundancy information enables the decoding of other symbols of the sidelink transmission that spans the multiple aggregated slots.
3. 3 . The apparatus of claim 1 , wherein the first symbol is a duplicate of a proceeding symbol of the sidelink transmission that spans the multiple aggregated slots.
4. 4 . The apparatus of claim 1 , wherein the unique information includes unique information in relation to other symbols of the sidelink transmission that spans the multiple aggregated slots.
5. 5 . The apparatus of claim 1 , wherein the one or more processors are further configured to determine a content or a type of the first symbol based at least in part on a resource pool pre-configuration or a resource pool configuration.
6. 6 . The apparatus of claim 1 , wherein the one or more processors are further configured to: receive control signaling from the second UE, wherein the control signaling includes sidelink control information; and determine information included in the first symbol based at least in part on the control signaling.
7. 7 . The apparatus of claim 1 , wherein the one or more processors are further configured to determine information included in the first symbol based at least in part on an allocation size, wherein the allocation size corresponds to an entire resource pool bandwidth, or the allocation size corresponds to a portion of a resource pool bandwidth, wherein the allocation size comprises the PSSCH bandwidth allocation size.
8. 8 . The apparatus of claim 1 , wherein the one or more processors are further configured to determine information included in the first symbol based at least in part on the multiple aggregated slots being consecutive in time.
9. 9 . The apparatus of claim 1 , wherein the one or more processors are further configured to determine information included in the first symbol based at least in part on the multiple aggregated slots being non-consecutive in time.
10. 10 . The apparatus of claim 1 , wherein transmitting the sidelink transmission that spans the multiple aggregated slots is based at least in part on an allocation size that is greater than or equal to the bandwidth threshold, wherein the allocation size comprises the PSSCH bandwidth allocation size.
11. 11 . The apparatus of claim 1 , wherein transmitting the sidelink transmission that spans the multiple aggregated slots is based at least in part on an allocation size that spans an entire resource pool bandwidth, wherein the allocation size that spans the entire resource pool bandwidth comprises the PSSCH bandwidth allocation size.
12. 12 . The apparatus of claim 1 , wherein the one or more processors are further configured to: determine to allow or disallow sidelink transmissions that span multiple aggregated slots based at least in part on one or more of: a system congestion, a transmission cast type, a transmission priority, a pre-configuration, a configuration, or a channel access type.
13. 13 . An apparatus for wireless communication at a second user equipment (UE), comprising: a memory; and one or more processors, coupled to the memory, configured to: receive, from a first UE, a sidelink transmission that spans multiple aggregated slots, wherein a first symbol in a slot of the sidelink transmission enables a decoding of the sidelink transmission by the second UE, and wherein a gap symbol between the multiple aggregated slots is replaced by a physical sidelink shared channel (PSSCH) symbol that includes redundancy information or unique information; and transmit, to the first UE, a response based at least in part on the sidelink transmission that spans the multiple aggregated slots, wherein slot aggregation is allowed based at least in part on a PSSCH bandwidth allocation size being greater than or equal to a bandwidth threshold.
14. 14 . The apparatus of claim 13 , wherein: the redundancy information enables the decoding of other symbols of the sidelink transmission that spans the multiple aggregated slots; the first symbol is a duplicate of a proceeding symbol of the sidelink transmission that spans the multiple aggregated slots; or the unique information comprises unique information in relation to the other symbols of the sidelink transmission that spans the multiple aggregated slots.
15. 15 . The apparatus of claim 13 , wherein information included in the first symbol is based at least in part on one or more of: a resource pool pre-configuration or a resource pool configuration; control signaling transmitted by the second UE, wherein the control signaling includes sidelink control information; an allocation size, wherein the allocation size corresponds to an entire resource pool bandwidth, or the allocation size corresponds to a portion of a resource pool bandwidth, and wherein the allocation size comprises the PSSCH bandwidth allocation size; or the multiple aggregated slots being consecutive in time or non-consecutive in time.
16. 16 . A method of wireless communication performed by a first user equipment (UE), comprising: transmitting, to a second UE, a sidelink transmission that spans multiple aggregated slots, wherein a first symbol in a slot of the sidelink transmission enables a decoding of the sidelink transmission by the second UE, and wherein a gap symbol between the multiple aggregated slots is replaced by a physical sidelink shared channel (PSSCH) symbol that includes redundancy information or unique information; and receiving, from the second UE, a response based at least in part on the sidelink transmission that spans the multiple aggregated slots, wherein the first UE is allowed to use slot aggregation based at least in part on a PSSCH bandwidth allocation size being greater than or equal to a bandwidth threshold.
17. 17 . The method of claim 16 , wherein the redundancy information enables the decoding of other symbols of the sidelink transmission that spans the multiple aggregated slots.
18. 18 . The method of claim 16 , wherein the first symbol is a duplicate of a proceeding symbol of the sidelink transmission that spans the multiple aggregated slots.
19. 19 . The method of claim 16 , wherein the unique information includes unique information in relation to other symbols of the sidelink transmission that spans the multiple aggregated slots.
20. 20 . The method of claim 16 , further comprising: determining a content or a type of the first symbol based at least in part on a resource pool pre-configuration or a resource pool configuration.

Description

FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for sidelink transmissions using slot aggregation. BACKGROUND Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like). Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP). A wireless network may include one or more base stations that support communication for a user equipment (UE) or multiple UEs. A UE may communicate with a base station via downlink communications and uplink communications. “Downlink” (or “DL”) refers to a communication link from the base station to the UE, and “uplink” (or “UL”) refers to a communication link from the UE to the base station. The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR), which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. BRIEF DESCRIPTION OF THE DRAWINGS So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements. FIG. 1 is a diagram illustrating an example of a wireless network, in accordance with the present disclosure. FIG. 2 is a diagram illustrating an example of a base station in communication with a user equipment in a wireless network, in accordance with the present disclosure. FIG. 3 is a diagram illustrating an example of sidelink communications, in accordance with the present disclosure. FIG. 4 is a diagram illustrating an example of sidelink communications and access link communications, in accordance with the present disclosure. FIG. 5 is a diagram illustrating an example of sidelink communication interference, in accordance with the present disclosure. FIG. 6 is a diagram illustrating an example associated with sidelink transmissions using slot aggregation, in accordance with the present disclosure. FIGS. 7-8 are diagrams illustrating example processes associated with sidelink transmissions using slot aggregation, in accordance with the present disclosure. FIG. 9-10 are diagrams of example apparatuses for wireless communication, in accordance with the present disclosure. SUMMARY In some implementations, an apparatus for wireless communication at a first user equipment (UE) includes a memory and one or more processors, coupled to the memory, configured to: transmit, to a second UE, a sidelink transmission that spans multiple aggregated slots, wherein a first symbol in a slot of the sidelink transmission enables a decoding of the sidelink transmission by the second UE; and receive, from the second UE, a response based at least in part on the sidelink transmission that spans the multiple aggregated slots. In some implementations, an apparatus for wireless communication at a second