A method of uplink carrier handoff in a multiple carrier communication system may include receiving a measurement report from a mobile providing information regarding path loss as measured at the mobile for one of the multiple carriers on the downlink. A serving carrier may be the carrier over which the mobile communicates on the uplink. An instruction may be selectively sent to the mobile to handoff to a non-serving one of the multiple carriers depending on whether a threshold requirement has been met. The meeting of the threshold requirement may be based on the received measurement report and the serving carrier of the mobile. Each of the multiple carriers may have an associated threshold requirement.