CDMA mobile communication scheme with effective use of sector co

Details CDMA mobile communication scheme with effective use of sector co CDMA mobile communication scheme with effective use of sector co

1997-03-20

2000-01-04

Patel, Ajit

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

375200, 455422, H04B 7216, H04B 169

Patent

active

060117877

ABSTRACT:
A CDMA mobile communication scheme capable of increasing a number of sectors while not increasing a number of perch channel spread codes and not jamming the control channel traffic, so as to obtain the capacity increase effect by the use of the sector configuration effectively. At the base station, a perch channel spread by an identical perch channel spread code assigned to the base station is transmitted from each one of at least two sectors of the base station. Then, upward signals from each mobile station are received at more than one reception sectors, the upward signals received at more than one reception sectors are despread by using an identical uplink spread code, and a maximal ratio combining of despread upward signals is carried out, in a case of carrying out a simultaneous reception at more than one reception sectors. Also, downward signals are spread by using an identical downlink spread code, and spread downward signals are transmitted from more than one transmission sectors to each mobile station, in a case of carrying out a simultaneous transmission from more than one transmission sectors.

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patent: 5841806 (1998-11-01), Gilhousen et al.

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