Patent ID: 8295772
Filing Date: 2012-10-23
Classification: H04B

Abstract:
1. An apparatus for a base station in a wireless telecommunications system for communication with a user equipment (UE), the base station apparatus comprising: a first antenna of a first polarization; a second antenna of a second polarization; a receiver; a transmitter; means for estimating the polarization state of an uplink signal which is received from the UE; and means for adapting the polarization state of a downlink signal transmitted from the base station to the UE based on the estimated polarization state of the uplink signal, wherein the means for adapting the polarization state of the downlink signal includes means for determining parameters relating to a coherency of the base station and an antenna configuration of the UE that specifies a number of antennas being used by the UE to communicate with the base station, that number being greater than one, and wherein the means for adapting the polarization state of the downlink signal is configured to adapt the polarization state of the downlink signal based on the determined parameters.