SYSTEM AND METHOD FOR DETERMINING THE SEVERITY OF INTERFERENCE IN DIFFERENT AREAS OF A CELLULAR RADIO NETWORK AND COORDINATING RADIO RESOURCE MANAGEMENT FEATURES IN RESPONSE

摘要

An interference analysis tool for identifying an interference problem area in a cellular radio network in which at least a first User Equipment (UE1) and a second UE (UE2) operate. The tool receives signal quality measurements and determines uplink or downlink interference severity. For UE2 uplink interference, the tool determines a first uplink Signal-to-Interference-and-Noise-Ratio (SINR) experienced by UE2, wherein the first SINR includes uplink interference from UE1. The tool also determines a second uplink SINR level (SINR0) experienced by UE2, wherein SINR0 does not include the uplink interference from UE1. The tool calculates a difference (&Dgr;SINR) between SINR and SINR0 for UE2, and identifies the area where UE1 is operating as an interference-causing area when the &Dgr;SINR for UE2 is greater than a threshold value. The tool may present interference severity levels to an operator, and may initiate Radio Resource Management (RRM) procedures to mitigate interference problems in the network.