Aperiodic transmission method and apparatus for sounding reference signal in wireless communication system

摘要

Provided are a method and an apparatus for an aperiodic transmission of a sounding reference signal (SRS), which is performed by a user equipment (UE), in a wireless communication system. The UE aperiodically transmits an SRS through a certain uplink (UL) component carrier (CC) of a plurality of UL CCs. The certain UL CC is identical to the UL CC that transmits a physical uplink shared channel (PUSCH), which is scheduled by an uplink grant, wherein the uplink grant contains a message that triggers the aperiodic transmission of an SRS.

主权项

1. A method of transmitting an aperiodic sounding reference signal (SRS) by a user equipment (UE) in a wireless communication system, the method comprising:
receiving, via a physical downlink control channel (PDCCH), downlink control information (DCI) including at least a trigger for triggering the aperiodic SRS transmission; and upon detecting the trigger, aperiodically transmitting a SRS through a specific uplink (UL) component carrier (CC) among a plurality of aggregated UL CCs when a carrier indicator field (CIF) is also included in the DCI, wherein the specific UL CC is an UL CC identified by the CIF.