Patent ID: 8503356

Claim:
A method of selecting a new cell that is to serve a wireless transmit/receive unit (WTRU), the method comprising: measuring a downlink path loss, PL a , of a serving cell that is currently serving the WTRU during a current cell selection interval; measuring a downlink path loss, PL b , of at least one other cell that is not currently serving the WTRU during the current cell selection interval; calculating a path loss difference, |PL a −PL b |, between the serving cell and the other cell; determining whether the calculated path loss difference, |PL a −PL b |, is below a threshold; on a condition that the path loss difference, |PL a −PL b |, is not below the threshold, measuring downlink path loss during a next cell selection interval; and on a condition that the path loss difference, |PL a −PL b |, is below the threshold, measuring a channel quality indicator (CQI) for each of a plurality of subcarrier blocks in the downlink of the serving cell, respectively, reporting the measured CQIs and receiving a message indicating a new serving cell that was determined to serve the WTRU based on the CQIs.