Method and apparatus for performing an access procedure

Details Method and apparatus for performing an access procedure Method and apparatus for performing an access procedure

2011-08-30

2011-08-30

Le, Lana N (Department: 2618)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000, C370S441000, C375S145000, C375S146000, C455S522000, C455S069000

Reexamination Certificate

active

08009636

ABSTRACT:
A base station for controlling transmission power during the establishment of a communication channel utilizes the reception of a short code during initial power ramp-up. The short code is a sequence for detection by the base station which has a much shorter period than a conventional access code. The ramp-up starts from a power level that is lower than the required power level for detection by the base station. The power of the short code is quickly increased until the signal is detected by the base station. Once the base station detects the short code, it transmits an indication that the short code has been detected.

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