Patent ID: 9596019
Date: 2017-03-14
CPC Classifications: H01Q,H04B,H04L

Claim:
1. A group of at least two transceiver units in at least one wireless communication system, the transceiver units in the group being arranged for wireless communication with at least one other transceiver unit, where the transceiver units in the group are arranged to transmit signals with polarizations that are essentially parallel to each other when received by at least one transceiver unit for which the transmitted signals constitute interference and the essentially parallel polarizations are orthogonal to a polarization for reception when received by said at least one transceiver unit for which the transmitted signals constitute interference, wherein a) the transceiver units in the group: i) operate in a Time Division Duplex (TDD) mode and not a Frequency Division Duplex (FDD) mode, ii) are arranged to transmit signals during a first set of time intervals and receive signals during a second set of time intervals, the first set of time intervals and the second set of time intervals being separated from each other, and iii) are arranged to transmit the signals such that during a part of each time interval in the first set of time intervals two polarizations are used for transmission, while during the remaining part of each time interval in the first set of time intervals only one polarization is used for transmission, or b) the transceiver units in the group: i) operate in a FDD mode and not a TDD mode, ii) are arranged to transmit signals using a first set of frequency bands and receive signals using a second set of frequency bands, the first set of frequency bands and the second set of frequency bands being separated from each other, and iii) are arranged to transmit the signals such that for a part of each set of frequency bands two polarizations are used for transmission, while for the remaining part of each set of frequency bands only one polarization is used for transmission.