A METHOD AND APPARATUS FOR TRANSMISSION POWER CONTROL OF SOUCINDG REFERENCE SIGNALS

摘要

PURPOSE: A method for controlling the transmission power of SRS(Sounding Reference Signals) in a wireless communication system and a device thereof are provided to reinforce the support of a UL(UpLink) CoMP(Coordinated Multi-Point) and a DL(DownLink) CoMP. CONSTITUTION: A portable terminal constructs a P SRS_OFFSET,c(m) value including a second maximum value which is bigger than a first maximum value by using an upper layer(625). The portable terminal combines parameters signaled by the upper layer by measuring PL(Path Loss) based on a DL RS(DownLink Reference Signal) transmitted from TP(Transmission Power) related to the RP(Reception Power)(635). The portable terminal signals a first parameter applying the PL compensation to the power control of the data transmission and a second parameter applied to the power control of the SRS transmission(645). [Reference numerals] (610) Existing SRS TPC; (615) Enhanced SRS TPC; (620) Upper layer forms P_SRS_OFFSET.c(m) with a first maximum value; (625) UE measures PL based on DL RS transmitted from a single TP related to a single RP; (630) Signalα_c(j) of upper layers are applicable to both SRS and data/UCI/DMRS transmission from UE; (635) Upper layers form P^extend_SRS_OFFSET.c(m) with a second maximum value which is bigger than the first maximum value; (640) UE measures PL based on DL RS transmitted from a single TP related to a single RP and combines the PL with a parameter which is signaled by the upper layers; (645) Signaling signalα_c(j) of upper layers which is applicable to data/UCI/DMRS transmission from UE andα_SRS.c(j)=1 which is applicable to SRS transmission enhanced from UE;