Master station of communication system and access control...

Details Master station of communication system and access control... Master station of communication system and access control...

2011-06-07

2011-06-07

Pham, Chi H. (Department: 2471)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S350000, C370S503000, C455S502000, C455S507000

Reexamination Certificate

active

07957342

ABSTRACT:
A communication bandwidth is divided into a beacon period in which all master stations compete for transmission of a beacon packet, a first carrier sense multiple access (CSMA) period in which only authorized specific stations are allowed to compete for access, and a second CSMA period in which all stations are allowed to compete for access. The master stations exchange information with each other about a communication bandwidth being used in the first CSMA period, thereby calculating a communication bandwidth which can be used by each communication system in the first CSMA period, based on the information.

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