Cell selection scheme in CDMA mobile communication system using

Details Cell selection scheme in CDMA mobile communication system using Cell selection scheme in CDMA mobile communication system using

1997-03-06

1999-09-14

Marcelo, Melvin

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370342, 370491, H04J 1302, H04Q 736

Patent

active

059533269

ABSTRACT:
A cell selection scheme in a CDMA mobile communication system which is capable of shortening the cell selection processing time while constructing a mobile communication system with a practically feasible base station configuration. In a CDMA mobile communication system, first type base stations which share a common reference timing are transmitting pilot channels spread by using an identical pilot channel spread code at mutually different spread code phases with respect to the common reference timing where these mutually different spread code phases are assigned to different first type base stations, and second type base stations which do not share the common reference timing are transmitting pilot channels spread by using mutually different pilot channel spread codes at arbitrary spread code phases where these mutually different pilot channel spread codes being assigned to different second type base stations. A mobile station receives these pilot channels and judges a located cell of the mobile station according to receiving levels, pilot channel spread codes and spread code phases of received pilot channels.

REFERENCES:
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5691974 (1997-11-01), Zehavi et al.
patent: 5703873 (1997-12-01), Ojanpera et al.
patent: 5715236 (1998-02-01), Gilhousen et al.

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