Code reuse apparatus in CDMA wireless communication system...

Details Code reuse apparatus in CDMA wireless communication system... Code reuse apparatus in CDMA wireless communication system...

2006-07-04

2006-07-04

Trost, William (Department: 2683)

Telecommunications

Radiotelephone system

Zoned or cellular telephone system

C455S062000, C455S450000, C455S509000, C370S329000, C370S441000

Reexamination Certificate

active

07072660

ABSTRACT:
A code reuse apparatus in a code division multiple access wireless communication system using beamforming by an antenna array and a code reuse method therefor, wherein the method includes examining a spatial correlation between a new mobile station requesting communication and each of existing mobile stations using already allocated codes, based on long-term information reflecting spatial characteristics of beams transmitted to the new and existing mobile stations, and selecting one among the already allocated codes to reuse as a code for the new mobile station depending on the results of the correlation examination. As a result, the factual number of mobile stations for one base station may be close to the theoretic number of mobile stations corresponding to power gain by beamforming.

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