Method and apparatus for orthogonal code management in CDMA...

Details Method and apparatus for orthogonal code management in CDMA... Method and apparatus for orthogonal code management in CDMA...

2006-02-07

2006-02-07

Duong, Frank (Department: 2666)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S320000, C370S335000, C370S342000, C370S441000

Reexamination Certificate

active

06996056

ABSTRACT:
A method and apparatus for enabling Orthogonal codes to be reused within the same cell of a code division multiple access telecommunication network includes an base station transceiver system that comprises logic circuitry for enabling the base station transceiver system to reuse Orthogonal codes in a manner that reduces the likelihood of collision between two mobile stations having the same Orthogonal code and corresponding communication channels. The method of the present invention specifically includes analyzing user characteristics including factors such as his physical movement, location and mobile station communication type, as well as angular placement

REFERENCES:
patent: 5621752 (1997-04-01), Antonio et al.
patent: 6229796 (2001-05-01), Dent
patent: 6388998 (2002-05-01), Kasturia
patent: 1 026 911 (2000-08-01), None
patent: WO 99 60809 (1999-11-01), None
patent: WO 99/60809 (1999-11-01), None
Naguib et al, Capacity Improvement with Base-Station Antenna Arrays in Cellular CDMA, IEEE, pp. 691-698, 1994.

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