Title of Invention

INTERSYSTEM BASE STATION HANDOVER

Abstract

A mobile wireless telecommunications system includes base stations of a first type operating according to a first air interface, and base stations of a second type operating according to a second air interface. Methods and apparatus are provided for handing over a mobile station in the system from a first base station, which is of the first type, to a second base station, which is of the second type. A communications link is established over the first air interface between the mobile station and the first base station. Data are received from the mobile station responsive to a signal received by the mobile station over the second air interface from the second base station, substantially without breaking the communications link with the first base station. The mobile station is handed over form the first to the second base station responsive to the data received therefrom. In particular, a method of conducting intersystem handover from a multicarrier system to a direct spread system is provided. Timing synchronization is also advantageously made available through the mobile station.

Full Text

Documents:

abstract in-pct-2002-1400-che.jpg

in-pct-2002-1400-che abstract.pdf

in-pct-2002-1400-che claims.pdf

in-pct-2002-1400-che correspondence others.pdf

in-pct-2002-1400-che correspondence po.pdf

in-pct-2002-1400-che description (complete).pdf

in-pct-2002-1400-che drawings.pdf

in-pct-2002-1400-che form 1.pdf

in-pct-2002-1400-che form 13.pdf

in-pct-2002-1400-che form 18.pdf

in-pct-2002-1400-che form 3.pdf

in-pct-2002-1400-che form 5.pdf

in-pct-2002-1400-che pct.pdf

in-pct-2002-1400-che petition.pdf

in-pct-2002-1400-che power of attorney.pdf