Patent ID: 8830839
Filing Date: 2014-09-09
Classification: H04B,H04L

Abstract:
1. A method of feeding back a channel response estimate of a backhaul link established between a base station and a relay that assists the base station in communicating with a mobile device over an access link established between the relay and the mobile device, the method comprising: estimating a first part of the backhaul link channel response by calculating an average of the backhaul link channel response over a predetermined period at the relay; estimating a second part of the backhaul link channel response by calculating variation in the backhaul link channel response over the predetermined period at the relay, the second part of the backhaul link channel response changing faster than the first part; and transmitting a quantized version of the first part of the backhaul link channel response and a quantized version of the second part of the backhaul link channel response from the relay to the base station over the backhaul link.