A-MAC: A MAC Protocol Using Alternative Wakeup Schedules to Achieve Energy Efficiency for Wireless Sensor Networks

作者：Chuang Po Jen^*; Lin Chih Shin

来源：Journal of Information Science and Engineering, 2010, 26(6): 2127-2141.

• alternative wakeup schedules
• collision avoidance
• energy efficiency
• latency reduction
• medium access control (MAC) protocols
• static wireless sensor networks

This paper presents a new MAC protocol to achieve energy efficiency and low transmission latency for the static wireless sensor networks. The proposed new protocol is called A-MAC, an Alternative MAC, which assigns modified alternative wakeup schedules to different sensor nodes to minimize the probability of transmission collision. In A-MAC, after all sensor nodes are deployed, the base station will start an initial process to set a height for each node. When the height of each node (= the node's hop counts to the BS) is decided, the active interval of nodes whose height difference = 1 will be set to be continuous to reduce transmission latency, whereas the active interval of nodes with the same height will stagger to avoid collision (i.e., to reduce the probability of simultaneous transmission). Operating by such alternative wakeup schedules, the new protocol is able to smooth data transmission and meanwhile conserve energy consumption for the energy-constrained wireless sensor networks.

• 出版日期2010-11