Patent ID: 9386556
Filing Date: 2016-07-05
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for optimizing limited feedback in a wireless access system supporting a distributed antenna (DA) technique, the method comprising: receiving, at a user equipment (UE) from a DA port through a physical downlink control channel (PDCCH), information related to transmission power of a number of DA ports including the DA port and a number of transmission antennas of the DA ports; receiving a downlink signal from each of the DA ports; measuring a distance between the UE and each of the DA ports using a downlink signal from each of the DA ports; calculating a number of feedback bits based on the information related to the transmission power, the number of transmission antennas, and the distance between the UE and the DA ports; and transmitting feedback information using the calculated number of feedback bits.