Uplink resource sharing for sidelink devices

Patent metadata

Field	Value
Publication number	US-2022232554-A1
Application number	US-202117150876-A
Country	US
Kind code	A1
Filing date	Jan 15, 2021
Priority date	Jan 15, 2021
Publication date	Jul 21, 2022
Grant date	—

Abstract

Methods, systems, and devices for wireless communication are described to support allocation of a group-based configured uplink resource for idle mode uplink transmissions. User equipments (UEs) may be grouped geographically and/or functionally and may have sidelink communications among themselves, and may be in an inactive mode or an idle mode. A base station may allocation one or multiple configured uplink resources to the group of UEs, where the base station may be aware of the group based on signaling from a UE of the group. The group of UEs may determine which UE of the group may use the allocated resources, and in which occasions. Based on the determination, one or more UEs of the group may transmit an uplink message to the base station using the configured uplink resource assigned to the group.

First claim

What is claimed is:

1 . A method for wireless communication at a first user equipment (UE), comprising:
transmitting, to a base station, an indication of a UE group comprising a plurality of sidelink UEs; receiving a group resource allocation message indicating an uplink group resource occasion allocated to at least one sidelink UE of the plurality of sidelink UEs for idle mode uplink transmission; and transmitting, in idle mode, an uplink message to the base station during the uplink group resource occasion based at least in part on receiving the group resource allocation message.

2 . The method of claim 1 , wherein transmitting the indication of the UE group comprises:
transmitting a request for a group resource for idle mode uplink transmissions for the UE group, wherein receiving the group resource allocation message is based at least in part on transmitting the request.

3 . The method of claim 1 , wherein receiving the group resource allocation message comprises:
receiving the group resource allocation message from the base station indicating the uplink group resource occasion is allocated to a first subset of the plurality of sidelink UEs, wherein the first subset includes the first UE.

4 . The method of claim 3 , further comprising:
transmitting an indication of the uplink group resource occasion to one or more second UEs of a second subset of the plurality of sidelink UEs based at least in part on receiving the group resource allocation message.

5 . The method of claim 1 , wherein receiving the group resource allocation message comprises:
receiving the group resource allocation message from the base station indicating the uplink group resource occasion is allocated to the plurality of sidelink UEs of the UE group.

6 . The method of claim 1 , wherein the group resource allocation message includes a group identifier associated with the UE group.

7 . The method of claim 1 , wherein receiving the group resource allocation message comprises:
receiving a radio resource control (RRC) release message comprising the group resource allocation message.

8 . The method of claim 1 , wherein receiving the group resource allocation message comprises:
receiving, operating in a connected mode, a radio resource control (RRC) message comprising the group resource allocation message.

9 . The method of claim 1 , further comprising:
receiving, from a second UE of the plurality of sidelink UEs, a sidelink message indicating uplink data to transmit to the base station via the uplink message during the uplink group resource occasion, wherein transmitting the uplink message to the base station is based at least in part on receiving the sidelink message.

10 . The method of claim 1 , wherein transmitting the uplink message comprises:
transmitting the uplink message comprising uplink data at least partially overlapping with a transmission of the uplink data during the uplink group resource occasion by a second UE of the plurality of sidelink UEs.

11 . The method of claim 1 , wherein transmitting the uplink message comprises:
transmitting the uplink message comprising uplink data and an identifier of the first UE or a second UE, wherein the identifier indicates that the uplink data is generated by the first UE or the second UE.

12 . The method of claim 1 , further comprising:
receiving, from a second UE of the plurality of sidelink UEs, an allocation message allocating the uplink group resource occasion to the first UE, wherein transmitting the uplink message in the uplink group resource occasion is based at least in part on receiving the allocation message.

13 . The method of claim 12 , further comprising:
transmitting, to the second UE, an allocation request message requesting the uplink group resource occasion for transmission of the uplink message, wherein receiving the allocation message from the second UE is based at least in part on transmitting the allocation request message.

14 . The method of claim 1 , further comprising:
transmitting, to multiple UEs of the plurality of sidelink UEs, a sidelink control message reserving the uplink group resource occasion for transmission of the uplink message based at least in part on detecting that the uplink group resource occasion is unreserved, wherein transmitting the uplink message in the uplink group resource occasion is based at least in part on transmitting the sidelink control message.

15 . The method of claim 14 , wherein transmitting the uplink message comprises:
transmitting the uplink message based at least in part on a number of continuous uplink transmissions by the first UE satisfying a threshold.

16 . The method of claim 1 , further comprising:
receiving, from a controller UE of the plurality of sidelink UEs, an allocation message allocating the uplink group resource occasion and a second uplink group resource occasion to the first UE, wherein transmitting the uplink message in the uplink group resource occasion is based at least in part on receiving the allocation message; and transmitting a second uplink message to the base station during the second uplink group resource occasion based at least in part on receiving the allocation message.

17 . The method of claim 1 , further comprising:
transmitting, to multiple UEs of the plurality of sidelink UEs, a sidelink control message reserving the uplink group resource occasion and a second uplink group resource occasion, wherein transmitting the uplink message in the uplink group resource occasion is based at least in part on transmitting the sidelink control message; and transmitting a second uplink message to the base station during the second uplink group resource occasion based at least in part on transmitting the sidelink control message.

18 . The method of claim 1 , wherein transmitting the uplink message comprises:
transmitting, during the uplink group resource occasion, the uplink message to one or more second UEs of the plurality of sidelink UEs for relaying the uplink message to the base station during a second uplink group resource occasion.

19 . The method of claim 1 , wherein transmitting the uplink message comprises:
receiving, from a second UE of the plurality of sidelink UEs prior to the uplink group resource occasion, a sidelink message indicating uplink data to transmit to the base station during the uplink group resource occasion; and transmitting the uplink message comprising the uplink data at least partially overlapping with a transmission of the uplink data during the uplink group resource occasion by the second UE based at least in part on receiving the sidelink message.

20 . The method of claim 1 , wherein receiving the group resource allocation message comprises:
receiving the group resource allocation message indicating an uplink group resource response occasion corresponding to the uplink group resource occasion.

21 . The method of claim 20 , further comprising:
receiving, from the base station, a response to the uplink message in the uplink group resource response occasion corresponding to the uplink group resource occasion.

22 . The method of claim 21 , wherein receiving the response to the uplink message comprises:
receiving the response to the uplink message in the uplink group resource response occasion at least partially overlapping with reception of the response to the uplink message during the uplink group resource response occasion at a second UE of the plurality of si

Assignees

• Qualcomm Inc

Inventors

• Xu Huilin
• Zhang Duo
• Huang Fei

Classifications

• H04W72/23

  in the downlink direction of a wireless link, i.e. towards a terminal · CPC title

• H04W72/21 Primary

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04L5/008

  once only, on installation · CPC title

• H04L5/0091

  Signalling for the administration of the divided path, e.g. signalling of configuration information · CPC title

• H04L5/0023

  Time-frequency-space · CPC title