Acta Metallurgica Sinica(English letters) ›› 2007, Vol. 14 ›› Issue (1): 6-11.doi: 1005-8885(2007) 01-0006-06

• Wireless • Previous Articles     Next Articles

Energy efficient TDMA-based MAC protocol associated with GAF for wireless sensor networks

XIAO Xiao;ZHENG Bao-yu; YAN Zhen-ya; CHEN Chao   

  1. Institute of Signal and Information Processing,
    Nanjing University of Posts and Telecommunications, Nanjing 210003, China
  • Received:2006-08-23 Revised:1900-01-01 Online:2007-03-30
  • Contact: XIAO Xiao

Abstract:

The design of media access control (MAC) protocol for wireless sensor networks (WSNs) with the idea of cross layer attracts more and more attention. People can improve the MAC protocol by obtaining certain information regarding the network layer and physical layer. This article synthesizes and optimizes certain cross-layer protocols which have existed. On the basis of the routing, topology information in the network layer, and transmission power information in the physical layer, the time slot assignment algorithm has been improved in the MAC layer. By using geographical adaptive fidelity algorithm (GAF) to divide the grids, controlling of transmission power and scheduling the work/sleep duty cycle for sensor nodes, a new MAC protocol has been proposed to decrease energy consumption and enlarge the lifetime of WSNs. Simulation results show that the MAC protocol functions well.

Key words:

power controlled;time division multiple access (TDMA);WSNs;MAC;GAF

CLC Number: