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Provisioning of high throughput in wireless mesh networks (WMNs) is a challenging issue for medium access control (MAC) protocol. This is due to not only some difficult problems present in such networks such as the hidden and exposed terminal problems but also the fact that a WMN is often used as a backbone network requiring more reliable and efficient performance. Note that multi-channel based MAC...
In this paper, we present an analytic model for evaluating the delay, delay jitter and the packet loss probability in multi-hop ad hoc networks using the IEEE 802.11 distributed coordination function (DCF) as MAC protocol. By modeling each node as a discrete time G/G/1 queue, we derive the closed form expressions of the end-to-end delay, delay jitter and the packet loss probability for different circumstances...
Since the wireless medium is a scarce resource, design of efficient medium access control (MAC) protocols with both high throughput and high fairness is significantly important for distributed ad hoc networks. Many current MAC protocols use an exponential backoff mechanism. In that mechanism, a node picks a random backoff time uniformly in an interval that doubles in size after a collision or decreases...
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