Patent ID: 9179419
Filing Date: 2015-11-03
Classification: H04B,H04L,H04W

Abstract:
1. A method of determining uplink transmission power at a user equipment (UE) in a wireless communication system, the method comprising: receiving channel status information-reference signal (CSI-RS) settings and downlink transmission power values for a plurality of transmission points (TPs) from a higher layer; receiving CSI-RSs from the plurality of TPs; estimating path loss values corresponding to the plurality of TPs based on the received CSI-RSs; determining the uplink transmission power using the estimated path loss values; and transmitting an uplink signal to one or more of the plurality of TPs based upon the determined uplink transmission power, wherein the CSI-RS settings include an indicator indicating whether the CSI-RSs are used for path loss value estimation in addition to channel status information feedback.