COT-sharing techniques based on a non-zero packet preparation delay

Inventors: Stelios Stefanatos (San Diego, CA); Tien Viet Nguyen (Bridgewater, NJ); Arthur Gubeskys (San Diego, CA); Shuanshuan Wu (San Diego, CA); Parisa Cheraghi (Cambridge, GB)

Assignee: QUALCOMM Incorporated

H04W74/0816 H04W72/02 H04W72/0453 H04W72/25

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Quick Facts

Patent No.: US 12677318
App. No.: 18/030,053
Granted: Jul 7, 2026
Kind: B2

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Abstract

A first UE may configure, during a COT, an initial transmission and one or more subsequent transmissions that follow the initial transmission. The one or more subsequent transmissions are configured to prevent a release of the COT. Based on the configuration, the first UE may transmit the initial transmission including an indication of the COT and a time period for transmitting the one or more subsequent transmissions. The first UE may subsequently transmit the one or more subsequent transmissions during the indicated time period. A second UE may receive the indication of the COT and the time period where the release of the COT is prevented. The second UE may prepare a packet for transmission during the time period where the release of the COT is prevented and transmit the packet during the COT following the time period where the release of the COT is prevented.

Claims (27)

1 . An apparatus for wireless communication at a first user equipment (UE), comprising:

memory; and

at least one processor coupled to the memory and configured to:

configure, during a channel occupancy time (COT) for an initial transmission, one or more subsequent transmissions that follow the initial transmission, the one or more subsequent transmissions configured to prevent a release of the COT;

transmit the initial transmission including an indication of the COT and a time period for transmission of the one or more subsequent transmissions, wherein the time period for transmission of the one or more subsequent transmissions corresponds to a packet preparation time of a second UE; and

transmit the one or more subsequent transmissions during the indicated time period.

2 . The apparatus of claim 1 , wherein the at least one processor is further configured to calculate the time period for transmission of the one or more subsequent transmissions based on at least one of an independent UE procedure, a configuration by a network or a base station, or a predefined protocol.

3 . The apparatus of claim 1 , wherein the COT and the time period for transmission of the one or more subsequent transmissions are indicated via sidelink control information (SCI).

4 . The apparatus of claim 1 , wherein the at least one processor is further configured to determine whether one or more frequency resources selected for transmission of the initial transmission are available for transmission of the one or more subsequent transmissions, the one or more subsequent transmissions is configured to be transmitted during the indicated time period on the one or more frequency resources selected for transmission of the initial transmission when the one or more frequency resources selected for transmission of the initial transmission are available.

5 . The apparatus of claim 1 , wherein the at least one processor is further configured to select one or more frequency resources for the one or more subsequent transmissions prior to transmitting the initial transmission.

6 . The apparatus of claim 5 , wherein the one or more frequency resources selected for the one or more subsequent transmissions are identical to one or more same frequency resources selected for the initial transmission.

7 . The apparatus of claim 1 , wherein the one or more subsequent transmissions include information that is duplicative of same information included in the initial transmission.

8 . The apparatus of claim 1 , wherein the configuration of the one or more subsequent transmissions is based on fulfilling a condition for sharing the COT with the second UE.

9 . The apparatus of claim 1 , wherein the configuration of the one or more subsequent transmissions is based on a type of the initial transmission.

10 . The apparatus of claim 1 , wherein the configuration of the one or more subsequent transmissions is based on a congestion level of a network.

11 . The apparatus of claim 1 , wherein the initial transmission initiates the COT, the configuration of the one or more subsequent transmissions based on the initial transmission initiating the COT.

12 . The apparatus of claim 1 , wherein the at least one processor is further configured to configure the COT based on a listen before talk (LBT) procedure.

13 . The apparatus of claim 1 , wherein a first time period where the release of the COT is prevented is equal to a sum of a second time period for transmission of the initial transmission and the time period for transmission of the one or more subsequent transmissions.

14 . The apparatus of claim 1 , wherein a COT time period for the COT is two or more slots, the time period for transmission of the initial transmission being at least one slot, and the time period for transmission of the one or more subsequent transmissions being one or more slots.

15 . A method of wireless communication at a first user equipment (UE), comprising:

configuring, during a channel occupancy time (COT) for an initial transmission, one or more subsequent transmissions that follow the initial transmission, the one or more subsequent transmissions configured to prevent a release of the COT;

transmitting the initial transmission including an indication of the COT and a time period for transmission of the one or more subsequent transmissions, wherein the time period for transmission of the one or more subsequent transmissions corresponds to a packet preparation time of a second UE; and

transmitting the one or more subsequent transmissions during the indicated time period.

16 . The method of claim 15 , further comprising calculating the time period for transmission of the one or more subsequent transmissions based on at least one of an independent UE procedure, a configuration by a network or a base station, or a predefined protocol.

17 . The method of claim 15 , wherein the one or more subsequent transmissions include information that is duplicative of same information included in the initial transmission.

18 . The method of claim 15 , wherein a first time period where the release of the COT is prevented is equal to a sum of a second time period for transmission of the initial transmission and the time period for transmission of the one or more subsequent transmissions.

19 . The method of claim 15 , wherein a COT time period for the COT is two or more slots, the time period for transmission of the initial transmission being at least one slot, and the time period for transmission of the one or more subsequent transmissions being one or more slots.