计算机工程 ›› 2015, Vol. 41 ›› Issue (1): 103-109.doi: 10.3969/j.issn.1000-3428.2015.01.019

• 移动互联与通信技术 • 上一篇    下一篇

无线体域网中基于能量有效性的动态调度策略

陈曙光1,马志超2   

  1. 1.阜阳师范学院物理与电子工程学院,安徽 阜阳 236041; 2.上海交通大学电子工程系,上海 200240
  • 收稿日期:2014-05-13 修回日期:2014-06-23 出版日期:2015-01-15 发布日期:2015-01-16
  • 作者简介:陈曙光(1966-),男,副教授,主研方向:无线通信,物联网;马志超,硕士研究生。
  • 基金项目:
    安徽省科技攻关计划基金资助项目(12010302080)

Dynamic Scheduling Strategy Based on Energy Efficiencyin Wireless Body Area Network

CHEN Shuguang1,MA Zhichao2   

  1. 1.School of Physics and Electronics Engineering,Fuyang Teachers College,Fuyang 236041,China;
    2.Department of Electronic Engineering,Shanghai Jiaotong University,Shanghai 200240,China
  • Received:2014-05-13 Revised:2014-06-23 Online:2015-01-15 Published:2015-01-16

摘要: 无线体域网(WBAN)是一种布置于人体(体表或体内)的传感器网络,它能够连续监控人体体征信号,及时传输到远程医疗中心,辅助医生做出诊断。由于人的活动性,经常会有一群WBAN聚集在一起,WBAN相互间的干扰会对单个WBAN内的通信造成影响。为减弱该干扰并确保整个网络的通信质量,提出基于能量有效性的自适应动态调度策略。建立干扰环境下的数学模型,将动态调度策略转化为最大化能量有效性并兼顾节点服务质量的非线性整数规划问题,并设计FEEM启发式算法对其进行求解。仿真结果表明,采用FEEM算法的动态调度策略在吞吐量、能量有效性和服务质量公平性方面均优于采用Horse Racing算法的静态调度策略。

关键词: 无线体域网, 调度策略, 吞吐量, 能量有效性, 公平性, 服务质量

Abstract: Wireless Body Area Network(WBAN) is a kind of sensor network which is placed around human body(on body or in body).WBAN can continuously monitor vital life signals,promptly transmit to a remote medical center and assist the doctor to make a diagnosis.Due to human activity,a bunch of WBAN may stick together.In such a case,the inter-BAN interference causes severe influence to intra-BAN communication.Aiming at the problem,this paper designs an adaptive dynamic scheduling strategy to reduce this kind of interference,thus ensures the communication quality among WBAN.It establishes the interference model.Then,the adaptive access strategy is formulated as an optimization problem to maximize the energy efficiency,taking into account the Quality of Service(QoS) of sensor.This optimization problem belongs to a non-linear integer programming problem.It designs a heuristic algorithm named FEEM to solve it.By running Fairness-based Energy Efficiency Maximization(FEEM) algorithm,it can get the adaptive dynamic scheduling strategy.Compared with the current static access strategy based on Horse Racing algorithm,the dynamic scheduling strategy based on FEEM algorithm performs better in terms of throughput,energy efficiency and QoS.

Key words: Wireless Body Area Network(WBAN), scheduling strategy, throughput, energy efficiency, fairness, Quality of Service(QoS)

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