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Routing in WSNs (Wireless Sensor Networks) is very challenging due to some special characteristics that differentiate these networks from other wireless networks like cellular networks, mobile ad-hoc network etc. The difference is due to scalability, careful resource management etc. Sensor nodes are generally battery powered, are expected to be remotely deployed, and operated autonomously in unattended...
We consider the problem of gathering correlated sensor data by a sink node in a wireless sensor network. We design efficient distributed protocols to maximize the network lifetime subject to nodal energy constraints. Many existing approaches address the routing layer only, but the routing often interacts with physical-layer power control and MAC-layer link access. We present a first effort to maximize...
In the last several years IEEE 802.15.4 has been accepted as a major MAC layer protocol for wireless sensor networks (WSNs) and has attracted the interest of there search community involved in security issues as the increased range of application scenarios bring out new possibilities for misuse and taking improper advantage of sensor nodes and their operation. As these nodes are very resource restrained...
This paper proposes a fast forward medium access control protocol (FFMAC) for quality-of-service (QoS) guarantee in multihop IEEE 802.11s wireless mesh networks with multiple channels. To the best of our knowledge, the proposed protocol is the first one which considers the multihop and multichannel issues simultaneously. It provides higher priority for real-time applications, while remaining the distributed...
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