Patent ID: 9713096
Date: 2017-07-18
CPC Classifications: H04L,H04W

Claim:
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, by the UE through a higher layer signal, uplink power control information, the uplink power control information including a first power offset value related to a periodic SRS transmission and a second power offset value related to an aperiodic SRS transmission, the first power offset value and the second power offset value being semi-statically configured; receiving, by the UE, information regarding plural configurations for an aperiodic SRS, wherein each configuration of the plural configurations includes a transmission comb value for the aperiodic SRS; receiving, by the UE, a first downlink control information (DCI) format in a subframe n, the first DCI format indicating: according to the first DCI format, transmitting the aperiodic SRS based on: receiving, by the UE, a second DCI format, the second DCI format indicating: according to the second DCI format, transmitting the aperiodic SRS based on: wherein the transmission comb value of the first configuration is different from the transmission comb value of the second configuration.