Dmitry R Milikovsky

US Patent:

20070270100, Nov 22, 2007

Filed:

Oct 27, 2006

Appl. No.:

11/553955

Inventors:

Avneesh Agrawal - San Diego CA, US
Dmitry Milikovsky - San Diego CA, US
Peter Black - San Diego CA, US

International Classification:

H04B 17/00

US Classification:

455067110, 455453000

Abstract:

Method and apparatus for estimating reverse link loading in a wireless communication system. The reverse link interference is measured and reverse link receiver noise is measured. The reverse link interference is compared to the reverse link receiver noise, for example, by dividing the interference power by the receiver noise power. The reverse link receiver noise can be measured in an orthogonal frequency division multiple access (OFDMA) system by nulling transmission from access terminals within the cell and nearby during a null time and frequency interval. Power measure in the null time and frequency interval is receiver noise power. The reverse link interference can be measure by several means. For example, local null time and frequency intervals can be designated. The access terminals within the cell null their transmissions during the local time and frequency intervals. Access terminals outside the cell continue to transmit during the local time and frequency intervals. Power measured in the local time and frequency interval is interference power. As another example, interference power can be measured by subtracting pairs of pilot symbols that are contiguous to each other in time or frequency.