Apparatus and method for controlling ranging of mobile...

Details Apparatus and method for controlling ranging of mobile... Apparatus and method for controlling ranging of mobile...

2011-02-01

2011-02-01

Marcelo, Melvin (Department: 2463)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S350000, C370S500000

Reexamination Certificate

active

07881182

ABSTRACT:
Disclosed are an apparatus and a method for controlling ranging in a wireless communication system. The apparatus according to the present invention comprises a Radio Frequency (RF) module converting RF band signals received via antenna to low-frequency band signal; a Fast Fourier Transform (FFT) module converting the low-frequency band signal of time-domain to frequency-domain signal; a derandomizer performing derandomizing the frequency-domain signals by using a random sequence being transmitted by the terminals; a depermutation module combining the frequency-domain signals output from the derandomizer by unit of burst and outputting the combined signal; and a ranging controller controlling periodic ranging of the terminal corresponding to the respective bursts by estimating phase change in the frequency-domain signals of burst unit.

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Korean Intellectual Property Office, International Search Report for International Application No. PCT/KR2006/005797, 3 pages (Date completed: Apr. 27, 2007).

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