Patent ID: 8054895
Filing Date: 2011-11-08
Classification: H04B,H04L,H04W

Abstract:
1. A method for performing adaptive subcarrier allocation to a mobile terminal for OFDM or FDM transmission in a multi cell network, wherein transmit powers or spectral power distributions of serving and neighboring base stations are estimated at a mobile terminal, the estimation of the transmit powers or the spectral power distributions of the serving and neighboring base stations takes into account restrictions of the transmit powers or the spectral power distributions due to interference coordination schemes for the multi cell network, channel transfer functions are calculated based on measurements in the mobile terminal of pilots transmitted from the serving and neighboring base stations, the estimated transmit powers or the spectral power distributions are weighted with the channel transfer functions at the mobile terminal, a signal power associated with the serving base station and an interference power associated with the neighboring base stations are estimated at the mobile terminal based on said weighted transmit powers or the spectral power distributions, a signal to interference ratio is estimated at the mobile terminal based on the estimated signal and interference power, and the adaptive subcarrier allocation is based on the signal to interference ratio of the subcarriers experienced by the mobile terminal.