Computer Science ›› 2018, Vol. 45 ›› Issue (10): 130-137.doi: 10.11896/j.issn.1002-137X.2018.10.025

• Network & Communication • Previous Articles     Next Articles

Study on Channel-aware Expected Energy Consumption Minimization Strategy in Wireless Networks

HUANG Rong-xi1, WANG Nao2, XIE Tian-xiao2, WANG Gao-cai2   

  1. Department of Electronic and Information Engineering,Guangxi Agricultural Vocational College,Nanning 530007,China 1
    School of Computer and Electronic Information,Guangxi University,Nanning 530004,China 2
  • Received:2017-08-09 Online:2018-11-05 Published:2018-11-05

Abstract: With the rapid development of wireless network technology,saving energy consumption has become a very important topic to build green wireless networks.Due to the time-varying characteristics of the channel,it is possible to obtain a higher utilization for energy by using the channel with good state in wireless communication.From the view of the data transmission energy consumption of the whole wireless network,this paper proposed the expected energy consumption minimization strategy(E2CMS) for data transmission based on the optimal stopping theory.The E2CMS delays the transmission of data until the best desired channel state is found,taking into account the maximum transmission delay and the given receiver power.This paper first constructed an energy consumption minimization problem with qua-lity of service constraints.Then it proved that the E2CMS is a pure threshold strategy by the optimal stopping theory,and obtained the power threshold by solving a fixed-point equation with backward induction.Finally,it conducted si-mulations in a typical small-scale fading channel model and compared E2CMS with a variety of different transmission scheduling strategies.The results show that E2CMS has smaller average energy consumption per unit of data and signi-ficantly improves the network performance.

Key words: Channel awareness, Data transmission, Energy consumption optimization, Optimal stopping theory, Wireless networks

CLC Number: 

  • TP393
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