ఇంటర్నేషనల్ జర్నల్ ఆఫ్ అడ్వాన్స్మెంట్స్ ఇన్ టెక్నాలజీ
అందరికి ప్రవేశం

నైరూప్య

Impact of Mobility and Transmission Range on the Performance of Backoff Algorithms for IEEE 802.11-Based Multi-hop Mobile Ad hoc Networks

Pooja Saini

The medium access control (MAC) protocol is the main element which determines the system performance in wireless local area networks. The MAC technique of the IEEE 802.11 protocol is called Distributed Coordination Function (DCF). In IEEE 802.11 Wireless Local Area Networks (WLANs), network nodes experiencing collisions on the shared channel need to backoff for a random period of time, which is uniformly selected from the Contention Window (CW). This contention window is dynamically controlled by the Backoff algorithm. First step to design a an efficient backoff algorithm for multi-hop ad hoc network is to analysis of the existing backoff algorithms in multi-hop ad hoc networks. Thus, in this paper, we considered two important multi-hop adhoc network scenarios: (a) Node Mobility Scenario and (b) Transmission Range Scenario and analyze and evaluate both the impact of mobility (i.e. node speed) and the impact of transmission range of nodes on the performance of various backoff algorithms.