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MAC LAYER’S MISBEHAVIOR HANDLING IN WIRELESS NETWORK
Authors: Gollagi S.G., Ankaliki S.G. , Zinage H.R
Number of views: 449
The 802.11 family uses a MAC layer known as CSMA/CA (Carrier Sense Multiple Access/Collision Avoidance) contention resolution mechanism for sharing the wireless medium. In this environment, hosts can not trusted and selfish host that fails to adhere to the medium access policies may obtain an unfair throughput share. For instance, IEEE 802.11 requires host competing for access to the medium to wait for backoff interval, randomly selected from the specified range, before initiating a next transmission. Selfish station may wait for smaller backoff interval than well-behaved station, thereby obtaining an unfair advantage of channel. In this paper, an attempt is made to capture the behavior of misbehaving station and diagnosis such hosts in the network. Further, we discover the penalty scheme for punishing selfish hosts. Simulation results under this misbehavior model have indicated that, proposed scheme provides fairly accurate diagnosis and effective in restricting the throughput of selfish station to a fair share and hence successful in handling Medium Access Control (MAC) misbehavior in the wireless Network. The NetSim-2(simulator) had used for the simulation: CBR flow with rate 2Mbps, Packet size: 512 bytes and simulation time per run is 50 second.