Devices and methods of signaling for resource selection and reservation in sidelink transmission

Patent metadata

Field	Value
Publication number	US-11943067-B2
Application number	US-202017027885-A
Country	US
Kind code	B2
Filing date	Sep 22, 2020
Priority date	Oct 4, 2019
Publication date	Mar 26, 2024
Grant date	Mar 26, 2024

Abstract

A first user equipment (UE) is configured to receive from a base station a signaling comprising indication of one or more time-frequency resources and an indicator indicating a time gap, and transmit a transport block (TB) to a second UE using the one or more time-frequency resources. For each of the time-frequency resources, the first UE monitors a hybrid automatic repeat request (HARQ) feedback from the second UE, using a physical sidelink feedback channel (PSFCH) resource; and transmits to the base station a HARQ feedback report signal based on the HARQ feedback or absence thereof, in a physical uplink control channel (PUCCH), using a single PUCCH resource determined based on the time gap from a last one of the PSFCH resources.

First claim

What is claimed is:

1. A method comprising:
receiving, by a first user equipment (UE) from a base station, a signaling comprising indication of a plurality of time-frequency resources and an indicator indicating a time gap;
performing, by the first UE, a plurality of transmissions of a transport block (TB) to a second UE using the plurality of time-frequency resources, respectively;
for each of the plurality of transmissions, monitoring, by the first UE, a hybrid automatic repeat request (HARQ) feedback from the second UE, using a physical sidelink feedback channel (PSFCH) resource, wherein each PSFCH resource belongs to a plurality of PSFCH resources; and
transmitting, by the first UE to the base station, a HARQ feedback report signal based on the plurality of HARQ feedback or absence thereof, in a physical uplink control channel (PUCCH), using a single PUCCH resource determined based on the time gap from a last one of the plurality of PSFCH resources.

2. The method of claim 1 , wherein the signaling comprises downlink control information (DCI), and the DCI includes the indication of the plurality of time-frequency resources.

3. The method of claim 1 , wherein the plurality of time-frequency resources are configured for configured grant with a periodicity by the base station.

4. The method of claim 1 , wherein the signaling comprises radio resource control (RRC) signaling and the RRC signaling comprises the indication of the plurality of time-frequency resources and the indicator of the time gap.

5. The method of claim 1 , wherein the signaling comprises radio resource control (RRC) signaling and downlink control information (DCI).

6. The method of claim 1 , wherein the HARQ feedback report signal is a single bit.

7. The method of claim 1 , wherein any one of the plurality of transmissions of the TB comprises an initial transmission of the TB or a retransmission of the TB.

8. A user equipment comprising a transceiver and a processor, being configured to perform the method of claim 1 .

9. An apparatus comprising an antenna; a processor; and a non-transitory computer readable storage medium storing processor executable instructions for execution by the processor, the processor executable instructions including instructions causing the apparatus to perform a method according to claim 1 .

10. The method of claim 1 , wherein the time gap corresponds to a slot wherein the last one of the plurality of PSFCH resources locates.

11. A method comprising:
transmitting, by a base station to a first UE, a signaling comprising indication of a plurality of time-frequency resources for transmitting a transport block (TB) by the first UE, each one of the plurality of time-frequency resources associated with a physical sidelink feedback channel (PSFCH) resource for receiving a hybrid automatic repeat request (HARQ) feedback by the first UE, and each PSFCH resource belongs to a plurality of PSFCH resources, the signaling further comprising an indicator indicating a time gap between a last one of the plurality of PSFCH resources and a physical uplink control channel (PUCCH) resource; and
receiving, by the base station, from the first UE, a HARQ feedback report signal in a PUCCH, using the PUCCH resource, wherein the HARQ feedback report signal is based on the plurality of HARQ feedback or absence thereof.

12. The method of claim 11 , wherein the signaling comprises downlink control information (DCI), and the DCI includes the indication of the plurality of time-frequency resources.

13. The method of claim 11 , wherein the base station configures the plurality of time-frequency resources for configured grant with a periodicity.

14. The method of claim 11 , wherein the signaling comprises radio resource control (RRC) signaling and the RRC signaling comprises the indication of the plurality of time-frequency resources and the indicator of the time gap.

15. The method of claim 11 , wherein the signaling comprises radio resource control (RRC) signaling and downlink control information (DCI) signaling.

16. The method of claim 11 , wherein the HARQ feedback report signal is a single bit in a PUCCH transmission.

17. A base station comprising a transceiver and a processor, being configured to perform the method of claim 11 .

18. An apparatus comprising an antenna; a processor; and a non-transitory computer readable storage medium storing processor executable instructions for execution by the processor, the processor executable instructions including instructions causing the apparatus to perform a method according to claim 11 .

19. The method of claim 11 , wherein the time gap corresponds to a slot wherein the last one of the plurality of PSFCH resources locates.

Assignees

• Cao Yu
• Maaref Amine
• Ma Jianglei
• Huawei Tech Co Ltd

Inventors

• Cao Yu
• Maaref Amine
• Ma Jianglei

Classifications

• H04W72/40

  Resource management for direct mode communication, e.g. D2D or sidelink · CPC title

• H04W72/25

  between terminals via a wireless link, e.g. sidelink · CPC title

• H04L1/1893 Primary

  Physical mapping arrangements (physical resource mapping in general H04L5/00) · CPC title

• H04L1/1861

  Physical mapping arrangements (for ACK signaling see also H04L5/0053) · CPC title

• H04L1/1854 Primary

  Scheduling and prioritising arrangements · CPC title