Aperiodic transmission method and apparatus for sounding reference signal in wireless communication system
AssigneeLG Electronics Inc.
InventorsMin Seok Noh, Seung Hee Han, Jae Hoon Chung
Life of this patent
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Abstract
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.
Claims13
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.
A user equipment configured to transmit an aperiodic sounding reference signal (SRS) in a wireless communication system, the user equipment comprising:
- a radio frequency (RF) transmitter;
- and
- a processor coupled to the RF transmitter and configured to
- 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 transmit 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.
Dependencies are inferred from the claim text.