Abstract
Low power MAC protocols have received a lot of consideration in the last few years because of their influence on the lifetime of wireless sensor networks. Since, sensors typically operate on batteries, replacement of which is often difficult. A lot of work has been done to minimize the energy expenditure and prolong the sensor lifetime through energy efficient designs, across layers. Meanwhile, the sensor network should be able to maintain a certain throughput in order to fulfill the QoS requirements of the end user, and to ensure the constancy of the network. This paper introduces different types of MAC protocols used for WSNs and proposes S-MAC, a Medium-Access Control protocol designed for Wireless Sensor Networks. S-MAC uses a few innovative techniques to reduce energy consumption and support self-configuration. A new protocol is suggested to improve the energy efficiency, latency and throughput of existing MAC protocol for WSNs. A modification of the protocol is then proposed to eliminate the need for some nodes to stay awake longer than the other nodes which improves the energy efficiency, latency and throughput and hence increases the life span of a wireless sensor network.
Highlights
Wireless Sensor Networks have become one of the flourishing research fields in recent years, as they are intended to have wide applications in military, environmental, and many other fields [1]
Many medium access control (MAC) protocols for wireless sensor networks have been planned in the recent years
This paper suggests S‐Medium Access Control (MAC), a medium‐access control (MAC) protocol designed for wireless sensor networks
Summary
Wireless Sensor Networks have become one of the flourishing research fields in recent years, as they are intended to have wide applications in military, environmental, and many other fields [1]. Due to economic and technological reasons, most available Wireless Sensor devices are very self‐conscious in terms of computational, memory, power, and communication capabilities [3] This is the main reason why most of the research on WSNs has focused on the design of energy and computationally efficient algorithms and protocols, and the application domain has been restricted to simple data‐oriented monitoring and reporting applications. The old‐style wireless medium access control protocol such as IEEE 802.11 is not suitable for the sensor network application because these are battery powered The recharging of these sensors nodes is expensive and not normally possible
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