Method and apparatus for transmitting and receiving HARQ response in communication system
AssigneesHyundai Motor Company, Kia Corporation
InventorGene Back Hahn
Life of this patent
Estimating the term…
Abstract
Disclosed are a method and apparatus for transmitting and receiving an HARQ response in a communication system. An operation method of a first terminal comprises the steps of: configuring a first HARQ identifier mapped to a first HARQ feedback resource; transmitting, to a second terminal, a message including the first HARQ identifier; transmitting sidelink data to a plurality of terminals belonging to a groupcast group in a groupcast method; and receiving, from the second terminal, an HARQ response to the sidelink data in the first HARQ feedback resource mapped to the first HARQ identifier.
Claims17
A method of a first user equipment (UE), comprising:
- configuring a first hybrid automatic repeat request (HARQ) identifier mapped to a first HARQ feedback resource;
- transmitting a message including the first HARQ identifier to a second UE;
- transmitting sidelink data to a plurality of UEs belonging to a groupcast group in a groupcast scheme;
- receiving a HARQ response for the sidelink data from the second UE in the first HARQ feedback resource mapped to the first HARQ identifier;
- reconfiguring HARQ identifiers allocated to remaining UEs excluding the second UE among the plurality of UEs when the second UE leaves the groupcast group;
- and
- transmitting the reconfigured HARQ identifiers to the remaining UEs,
- wherein the second UE belongs to the groupcast group.
A method of a second user equipment (UE), comprising:
- receiving, from a first UE, a message including a first hybrid automatic repeat request (HARQ) identifier mapped to a first HARQ feedback resource;
- receiving sidelink data from the first UE;
- generating a HARQ response for the sidelink data;
- and
- transmitting the HARQ response to the first UE in the first HARQ feedback resource mapped to the first HARQ identifier;
- when the third UE leaves the groupcast group, receiving a message including a reconfigured HARQ identifier from the first UE,
- wherein in a HARQ feedback procedure, the reconfigured HARQ identifier is used instead of the first HARQ identifier, and
- wherein the sidelink data is transmitted by the first UE in a groupcast scheme.
A first user equipment (UE), comprising:
- a processor;
- and
- a memory storing at least one instruction executable by the processor,
- wherein the at least one instruction causes the first UE to:
- configure a first hybrid automatic repeat request (HARQ) identifier mapped to a first HARQ feedback resource;
- transmit a message including the first HARQ identifier to a second UE;
- transmit sidelink data to a plurality of UEs belonging to a groupcast group in a groupcast scheme;
- receive a HARQ response for the sidelink data from the second UE in the first HARQ feedback resource mapped to the first HARQ identifier;
- and
- reconfigure HARQ identifiers allocated to remaining UEs excluding the second UE among the plurality of UEs when the second UE leaves the groupcast group;
- and
- transmit the reconfigured HARQ identifiers to the remaining UEs,
- wherein the second UE belongs to the groupcast group.
Dependencies are inferred from the claim text.