US 2022/0287005 A1 · RESOURCE SELECTION AND RESERVATION FOR COOPERATIVE RELAY IN SIDELINK NETWORKS

Abstract

Methods, systems, and devices for wireless communications are described for relayed sidelink communications in which a set of relays receives a groupcast sidelink communication from a source and relay the communication to a destination using cooperative multiple-input multiple-output (MIMO) techniques. A source, such as a source user equipment (UE), may reserve resources for the groupcast sidelink communication and the cooperative MIMO transmissions, and may transmit a resource reservation message with an indication of the reserved resources. The resource reservation message may be transmitted in a sidelink control information transmission, in a medium access control message, or any combinations thereof. In the event of a collision in reserved resources of multiple different sources, the sources or relays may determine a priority of each communication and transmit a selected communication based on the priority determination.

Claims30

Dependent claims

A method for wireless communication at a source user equipment (UE), comprising:

transmitting, to a set of relay UEs, a resource reservation message that indicates a first set of resources for a source UE communication from the source UE to the set of relay UEs, and a second set of resources for one or more relay transmissions of the source UE communication from the set of relay UEs to a destination UE, wherein the first set of resources are groupcast sidelink resources for a groupcast sidelink communication from the source UE to the set of relay UEs, and the second set of resources are cooperative multiple-input multiple-output resources for cooperative multiple-input multiple-output sidelink communications from the set of relay UEs to the destination UE;
and
transmitting the source UE communication to the set of relay UEs in the groupcast sidelink communication using the first set of resources.

An apparatus for wireless communication at a source user equipment (UE), comprising:

a processor;
memory coupled with the processor;
and
instructions stored in the memory and executable by the processor to cause the apparatus to:
transmit, to a set of relay UEs, a resource reservation message that indicates a first set of resources for a source UE communication from the source UE to the set of relay UEs, and a second set of resources for one or more relay transmissions of the source UE communication from the set of relay UEs to a destination UE, wherein the first set of resources are groupcast sidelink resources for a groupcast sidelink communication from the source UE to the set of relay UEs, and the second set of resources are cooperative multiple-input multiple-output resources for cooperative multiple-input multiple-output sidelink communications from the set of relay UEs to the destination UE;
and
transmit the source UE communication to the set of relay UEs in the groupcast sidelink communication using the first set of resources.

4 more elements

An apparatus for wireless communication at a relay user equipment (UE), comprising:

a processor;
memory coupled with the processor;
and
instructions stored in the memory and executable by the processor to cause the apparatus to:
receive, from a source UE, a resource reservation message that indicates a first set of resources for a source UE communication from the source UE, and a second set of resources for one or more relay transmissions of the source UE communication to a destination UE, wherein the first set of resources are groupcast sidelink resources for a groupcast sidelink communication from the source UE to the relay UE, and the second set of resources are cooperative multiple-input multiple-output resources for cooperative multiple-input multiple-output sidelink communications between the relay UE and the destination UE;
and
monitor the first set of resources for the source UE communication.

4 more elements

Dependencies are inferred from the claim text.

Resource selection and reservation for cooperative relay in sidelink networks

Life of this patent

Resource selection and reservation for cooperative relay in sidelink networks

Life of this patent

Abstract

Claims30