Guaranteeing the network lifetime in wireless sensor networks: A MAC layer approach

Energy is the most crucial but scarce resource in wireless sensor networks (WSNs). A wealth of MAC protocols are proposed only to prolong the network lifetime for energy-efficiency; whereas, others are tailored to reduce end-to-end latency in addition to extending the network lifetime. Since the requirements depend on the applications of the network, it would be difficult to design a single MAC that satisfies the wide range of applications. Specifically, some WSNs are required to survive for a certain lifetime because of too expensive deployment cost (e.g., harsh or hostile environments) to replace the energy-depleted sensor nodes. Furthermore, the portion of surviving sensor nodes can be a critical factor to satisfy the quality of surveillance (QoSv) requirements. In this paper, we propose a new adaptive MAC (A-MAC) protocol that not only guarantees the pre-configured network lifetime but also reduces the end-to-end latency. Basically, each sensor node adapts its duty cycle depend...

• Type: Journal
• Year: 2007
• Where: COMCOM
• Authors: Yongsub Nam, Taekyoung Kwon, Hojin Lee, Hakyung Jung, Yanghee Choi
• Keywords: COMCOM 2007, Network Lifetime, Sensor, Wireless Sensor Networks