US 6,982,971 B2
Method and system for handoff between an asychronous CDMA base station and a synchronous CDMA base station
Edward G. Tiedemann, Jr., San Diego, Calif. (US); Daisuke Terasawa, San Diego, Calif. (US); Sandip Sarkar, San Diego, Calif. (US); Yu-Cheun Jou, San Diego, Calif. (US); and Joseph P. Odenwalder, Del Mar, Calif. (US)
Assigned to QUALCOMM Incorporated, San Diego, Calif. (US)
Filed on Mar. 15, 2001, as Appl. No. 9/809,896.
Application 09/809896 is a continuation of application No. 09/515042, filed on Feb. 25, 2000, granted, now 6,246,673.
Claims priority of provisional application 60/122089, filed on Feb. 26, 1999.
Prior Publication US 2001/0021179 A1, Sep. 13, 2001
Int. Cl. H04Q 7/00 (2006.01)
U.S. Cl. 370—333 7 Claims
OG exemplary drawing
 
1. A method for establishing a handoff of a wireless mobile station from an asynchronous serving base station to a synchronous target base station comprising:
sending, from the asynchronous serving base station to the mobile station a neighbor list message indicative of a pseudonumber (PN) offset of a pilot associated with the synchronous target base station, wherein the PN offset is based on an estimated timing error existing between the asynchronous serving base station and the synchronous target base station; and
receiving from the mobile station a measurement message indicative of a measured timing difference between the PN offset and a pilot signal received at the mobile station from the synchronous target base station.