期刊
COMPUTERS & ELECTRICAL ENGINEERING
卷 65, 期 -, 页码 357-375出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compeleceng.2017.06.010
关键词
Dynamic power management; Adaptive packet size select; Lifetime; Reliability; Delay
类别
资金
- National Natural Science Foundation of China [61379110, 61572526, 61572528]
- National Basic Research Program of China (973 Program) [2014CB046305]
- Fundamental Research Funds for the Central Universities of Central South University [2015zzts215]
Wireless communications in e-healthcare must work in a reliable, fast and energy-efficient fashion. In this paper, first, a power level decision (PLD) algorithm is proposed to select the optimal power level for each node, which enables the minimum energy consumption on transmitting data per bit. Second, a power level and packet size decision (PPD) algorithm is presented to decide the optimal packet size, by either minimizing the delay at a prescribed transmission power or minimizing energy consumption with a prescribed delay. Third, a global link decision (GLD) scheme is devised to improve overall reliability and decrease overall delay simultaneously through raising availability of battery energy within nodes. Theoretical analysis demonstrated the validity of the GLD scheme. Moreover, experimental results show that the GLD scheme improves the transmission reliability by 8.70% and decreases the delay by 7.74%, without reducing the network lifetime, which was not achieved in previous research studies. (C) 2017 Elsevier Ltd. All rights reserved.
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