Patent ID: 7072311
Filing Date: 2006-07-04
Classification: H04W

Abstract:
1. A method of initiating reverse-link portions of handoffs between a serving base station and a target base station in a CDMA communication system having a plurality of base stations in communication with at least one mobile station, wherein each base station transmits at least one associated and corresponding pilot channel that uniquely identifies the base station, comprising the steps of: a) first receiving, at a subject mobile station, a message from the serving base station directing performance of a handoff to the target base station; and thereafter b) monitoring a first parameter reflective of strength of a signal received by the subject mobile station from the serving base station; c) monitoring a second parameter reflective of strength of a signal received by the subject mobile station from the target base station; d) determining if the first parameter is less than or equal to the sum of the second parameter and an offset; e) returning to step (b) if the first parameter is not less than or equal to the sum of the second parameter and the offset; and f) initiating a reverse link portion of the directed handoff between the serving and target base stations if the first parameter is less than or equal to the sum of the second parameter and the offset, wherein the reverse link portion of the handoff includes terminating transmissions from the subject mobile station to the serving base station, and initiating transmission from the subject mobile station to the target base station.