System method and wireless communication device for soft handoff

Details System method and wireless communication device for soft handoff System method and wireless communication device for soft handoff

1996-12-19

1998-12-29

Hsu, Alpus H.

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

370335, 455442, H04B 7216

Patent

active

058547851

ABSTRACT:
A wireless communication device (100) provides for soft handoff in a communication system employing CDMA by providing information on pilot identities to the base station represented by the active pilot in the access probe (215), and possibly in successive access probes. The system infrastructure allocates base stations according to the pilot identities (310) and transmits messages over the Paging Channels of the base station of the active pilot and neighboring base stations represented by the pilot identities (315). Thus, the wireless communication device can simultaneously demodulate the Paging Channel of multiple base stations while in the System Access State of CDMA.

REFERENCES:
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5267261 (1993-11-01), Blakeney, II et al.
patent: 5490165 (1996-02-01), Blakeney, II et al.
patent: 5640414 (1997-06-01), Blakeney , LI et al.
patent: 5754583 (1998-05-01), Eberhardt et al.
Willey, W. Daniel, "System, Method and Apparatus for Soft Handoff", filed on Oct. 11, 1996, pp. 1-13.
TIA/EIA Interim Standard: Mobile Station-Base Station Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System, TIA/EIA/IS-95-A, May 1995, 6-105 to 6-114.

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