Patent ID: 9538410
Date: 2017-01-03
CPC Classifications: H04B,H04L,H04W

Claim:
1. A method for transmitting an uplink signal by a user equipment (UE) served by a plurality of base stations in a Time Division Duplex (TDD) wireless communication system, the method comprising: receiving, by the UE from a first one of the plurality of base stations, a first downlink control signal which triggers the UE to transmit an uplink reference signal and triggers the UE to transmit, to a second one of the plurality of base stations, an uplink data channel including a transmission power value of the uplink reference signal; transmitting, by the UE, the uplink reference signal based on uplink-associated control information contained in the first downlink control signal; and transmitting, by the UE to the second base station, the uplink data channel including the transmission power value, wherein the transmission power value is shared between the first base station and the second base station, and is used for at least one of the first and second base stations to obtain a downlink channel gain between the UE and the at least one of the first and second base stations, and wherein the uplink data channel further includes signature information that is followed by the transmission power value.