Performance Degradation of IEEE 802.11 MANET due to Heavy Increase and Heavy Decrease in Contention Window

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Provided by: International Journal of Computer Applications
Topic: Networking
Format: PDF
"The primary Medium Access Control (MAC) technique of IEEE 802.11 is called Distributed Coordination Function (DCF). This protocol adopts a Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) with a Binary Exponential Backoff (BEB) algorithm to access the channel. The protocol performance mainly depends on backoff procedure which reduces the probability of collision. With BEB, waiting time of a node gets doubled after every unsuccessful transmission. This introduces fast-growing retransmission delays for the backlog traffic."
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