Interference estimation using data traffic power and reference signal power

摘要

In a wireless communication system, interference on data tones is estimated by detecting data transmissions from interferers. An overall interference covariance matrix is estimated as a function of scalar traffic to pilot ratio (TPR) estimates, residual interference covariance estimates, and covariance of channel estimates of dominant interferers. The interference estimates are refined as a function of reliability based on a ratio of power received from a serving cell and power received from a dominant interferer.

主权项

1. A method of computing an interference estimate for wireless communication, comprising:
receiving by a user equipment (UE) pilot tones from a serving cell and pilot tones from at least one interferer, where the pilot tones from the at least one interferer collide with the pilot tones from the serving cell; generating a first traffic to pilot ratio (TPR) estimate of the at least one interferer; computing a reliability of the first TPR estimate based on a received power of the serving cell and a received power of the at least one interferer; generating a second TPR estimate based on the first TPR estimate and the reliability of the first TPR estimate; and computing the interference estimate based on the second TPR estimate.