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AssigneeQUALCOMM Incorporated
InventorsEdward G. Tiedemann, Jr., Tao Chen
Estimating the term…
A method and apparatus for performing inter-system hard handoff between communication systems or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during inter-system hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station will return to the original system with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station monitors the destination system then returns to the original system with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station by the base station or a set of offsets based upon a predetermined search algorithm.
A method for avoiding a loss of communication with a mobile station in a wireless communication system wherein the mobile station is moving from an area covered by an origination system into an area covered by a destination system and wherein the mobile station has attempted to acquire said destination system and has failed, the method comprising:
A method of providing handoff for wireless communication wherein a mobile station is moving from an area covered by an origination system to an area covered by at least one destination system, comprising:
A wireless communication system that avoids a loss of communication wherein a mobile station is moving from an area covered by an origination system into an area covered by a destination system and wherein the mobile station has attempted to acquire said destination system and has failed, the system comprising:
A wireless communication system wherein a mobile station is moving from an area covered by an origination system to an area covered by at least one destination system, comprising:
Dependencies are inferred from the claim text.