Method and systems for decentralized interference management in a multi-antenna wireless communication system

摘要

A method that includes interference control at transmitters and interference mitigation at receivers in a wireless communication system is disclosed. Embodiments of the present invention exploit the interference sensitivity at neighboring terminals by taking into account the reciprocity of propagation radio channels in Time Division Duplexing systems (TDD). It can be applied to design the resource allocation for downlink (DL) and uplink (UL) transmissions in a wireless communication system. The methods include the self-configuration of the transmit power, the transmit precoder and the receive filter, at each transmitter and receiver in a multi-cell network. Systems are also provided and configured for implementing the methods of the invention.

主权项

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.