Impact Of Mobility and Transmission Range On The Performance of Backoff Algorithms For IEEE 802.11-Based Multi-hop Mobile Ad hoc Networks

TL;DR

This paper analyzes how node mobility and transmission range affect the performance of backoff algorithms in IEEE 802.11 multi-hop ad hoc networks, aiming to inform the design of more efficient algorithms.

Contribution

It provides a comparative analysis of existing backoff algorithms considering mobility and transmission range impacts in multi-hop ad hoc networks.

Findings

Mobility significantly impacts backoff algorithm performance.

Transmission range influences collision rates and throughput.

Certain algorithms perform better under specific mobility and range conditions.

Abstract

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