Random access apparatus and method

Details Random access apparatus and method Random access apparatus and method

2005-12-13

2010-02-16

Taylor, Barry W (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000, C370S515000

Reexamination Certificate

active

07664076

ABSTRACT:
A random access apparatus for supporting a variety of access service classes includes a radio frequency (RF) transmitting/receiving unit for receiving a preamble introduction broadcasting signal from a base station and transmitting a random access preamble to the base station, an introduction broadcasting signal processing unit for extracting a random access usage relating to M-sequences and hadamard sequences from the received preamble introduction broadcasting signal, a selecting unit for selecting a plurality of M-sequences and a hadamard sequence corresponding to a random access purpose based on the extracted random access usage, and a preamble producing unit for generating the random access preamble using the selected plurality of M-sequences and the selected hadamard sequence.

REFERENCES:
patent: 6597675 (2003-07-01), Esmailzadeh et al.
patent: 7212809 (2007-05-01), Khawand
patent: 2008/0130482 (2008-06-01), Dabak
patent: 1 345 464 (2003-09-01), None
Matthias Schulist & Georg Frank; “Link Level Performance Results for a WCDMA Random Access Scheme With Preamble Power Ramping and Fast Acquisition Indication”; 0-7803-5435-4/99/$10.00 © 1999 IEEE; VTC '99, pp. 2581-2585; 1999).

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