US2001021179A1

3G

Title

Method and system for handoff between an asynchronous CDMA base station and a synchronous CDMA base station

Application Number:

US20010809896

Family ID:

22400539

View on Espacenet

Publication Date:

13-09-2001

Application Date:

15-03-2001

Priority Date:

26-02-1999

Current Assignee:

ODENWALDER JOSEPH P , QUALCOMM INC , SARKAR SANDIP , TIEDEMANN JR EDWARD G , JOU YU-CHEUN , TERASAWA DAISUKE

Publication Country:

US

Declaring Company:

QUALCOMM INC

Abstract  Abstract

A method and system that enables faster acquisition of the forward link signal of a target base station in a mixed network of synchronous and asynchronous base stations is disclosed. The serving base station transmits in a neighbor list an estimated timing error 417 between the serving base station and a target base station. By utilizing the timing information a mobile station estimates the relative time offset 408 between forward link signals received from the serving base station and signals received from the target base station. Timing information acquired during handoff enables accurate updating of the estimated timing error 417 subsequently transmitted in the neighbor lists by the base stations.

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