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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...
Provisioning of more granular quality of services (QoS) for different applications in wireless mesh networks (WMNs) is a challenge issue for scheduling algorithms. Most traditional scheduling algorithms try to provide per-flow or per-class QoS almost without consideration of the end-to-end situation for applications such as path lengths. Actually, for the same type of applications, difficulties for...
Wireless sensor networks (WSNs) are characterized by dense tiny sensors that have only limited energy supply. One of the major challenges in constructing such networks is to achieve the pre-defined information accuracy while maintain long network lifetime. Therefore, a fundamental question is what is the lower bound for the power consumption of a sensor network collecting data subject to the pre-defined...
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