Method and apparatus for performing sidelink transmission based on contention based scheduling request in wireless communication system
AssigneeLG Electronics Inc.
InventorsYoungdae Lee, Sunghoon Jung
Life of this patent
Estimating the term…
Abstract
A method and apparatus for performing a sidelink (SL) transmission in a wireless communication system is provided. A user equipment (UE) transmits a contention based scheduling request (CB-SR) to an eNodeB (eNB) by using CB-SR resources to request SL transmission resources, and determines whether a SL grant for the SL transmission resources is received or not. If the UE does not receive the SL grant until a timer expires, the UE may transmit non-contention based SR to the eNB or autonomously select SL resources from resource pool to perform SL transmission.
Claims6
A method performed by a user equipment (UE) in a wireless communication system, the method comprising:
- transmitting a contention based scheduling request (CB-SR) to an eNodeB (eNB) using CB-SR resources to request sidelink (SL) transmission resources;
- starting a timer upon transmitting the CB-SR to the eNB;
- and
- transmitting a non-contention based SR to the eNB, when a SL grant for the SL transmission resources is not received until the timer expires,
- wherein the non-contention based SR is dedicated to a SL transmission or common to both a SL transmission and an UL transmission,
- wherein the CB-SR resources for requesting SL transmission resources correspond to a first set of CB-SR resources, and
- wherein the first set of CB-SR resources is configured separately from a second set of CB-SR resources for requesting uplink (UL) transmission resources.
A user equipment (UE) in a wireless communication system, the UE comprising:
- a memory;
- a transceiver;
- and
- a processor coupled to the memory and the transceiver,
- wherein the processor is configured to:
- control the transceiver to transmit a contention based scheduling request (CB-SR) to an eNodeB (eNB) using CB-SR resources to request sidelink (SL) transmission resources,
- start a timer upon the transceiver transmitting the CB-SR to the eNB, and
- control the transceiver to transmit a non-contention based SR to the eNB, when a SL grant for the SL transmission resources is not received until the timer expires,
- wherein the non-contention based SR is dedicated to a SL transmission or common to both a SL transmission and an UL transmission,
- wherein the CB-SR resources for requesting SL transmission resources correspond to a first set of CB-SR resources, and
- wherein the first set of CB-SR resources is configured separately from a second set of CB-SR resources for requesting uplink (UL) transmission resources.
Dependencies are inferred from the claim text.