Patent ID: 9456360
Filing Date: 2016-09-27
CPC Classification: H04B,H04L,H04W

Claim Text:
1. A method for decentralized interference management in a wireless communication system, including interference control at transmitters and interference mitigation at receivers, that takes into account the reciprocity of radio channels in Time Division Duplexing systems (TDD), where the transmitters and receivers are Base Stations (BSs) provided with at least a transmit filter and multiple User Equipment (UEs) provided with a receive filter and a transmit filter, respectively, each BS having knowledge of an estimated version of the channel towards its associated UEs, but not of the neighboring ones associated to other BSs, comprising: a) sensing an uplink transmission at each BS from the UEs associated to other BSs; b) processing at said BSs said uplink transmission for determining interference information; c) adjusting for each BS a transmit filter for a downlink transmission to associated UEs under an optimization transmission criterion and to mitigate interference towards UEs associated to other BSs, said adjustment of the downlink transmit filter at said BS is implemented in the digital signal processing (DSP) block at the BS controller; d) said UEs on receipt of said downlink transmission adjusting its receive filter under an optimization reception criterion, and e) adjusting for each UE a transmit filter using said receive filter for a further uplink transmission to be sensed by all BSs.