May 2024
Intermediate to advanced
309 pages
13h 33m
English
Content preview from Data Communications and Computer Networks by Pearson
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Media Access Control 153
After waiting for IFS amount of time, the station again senses the channel. If it finds the channel still
idle, it waits for a random amount of time partitioned into slots. This time is referred to as the contention
time and it is computed using the binary exponential back-off algorithm; a random number n is chosen
between 0 and 2
k
- 1 and the station is made to wait for n time slots. After each time slot, the station
senses the channel. If the channel is busy, the timer is stopped and it is not restarted until the channel is
found idle.
After waiting for n time slots, the station sends the frame and starts waiting ...
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