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《Journal of Shanghai Jiaotong University》 2017-01
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Adaptive Energy Saving Mechanism with Delay Aware in Hybrid Optical-Wireless Broadband Access Networks

WANG Ruyan;ZHOU Chao;WU Dapeng;XIE Yi;XIANG Luoyong;School of Telecommunication and Information Engineering,Chongqing University of Posts and Telecommunications;Optical Communication and Network Key Laboratory of Chongqing;Fiber Home Telecommunication and Technologies Co.,Ltd.;Chongqing Institue of Telecommunications;  
Gateway utilization is low in hybrid optical-wireless broadband access networks.Therefore,the energy efficiency can be effectively enhanced by employing the gateway sleep scheduling mechanism at the expense of increasing the system delay.In this paper,a novel adaptive energy saving mechanism with delay aware in hybrid optical-wireless broadband access networks was proposed based on the delay tolerance feature of data.In order to fully exploit the delay tolerance feature of data,and to adaptively determine the sleeping interval according to arrival rate,the queuing theory model was introduced to analyse the energy consumption and the data gateway latency.Meanwhile,to achieve the energy efficiency,the path reconstruction delay and congestion rate were dramatically reduced by the proposed multi-gateway load-balance mechanism.The results show that the proposed mechanism can reduce the total energy consumption ofgateways by 36%.Besides,the utilization rate of the gateway is effectively improved and the path delay is reduced.
【Fund】: 国家自然科学基金项目(61271261;61371097;61401052);; 重庆市教委科学技术研究项目(KJ1400418);; 重庆市青年科技人才培养计划(CSTC2014KJRC-QNRC40001);; 重庆高校创新团队建设计划(CXTDX201601020);; 重庆市高等学校青年骨干教师资助计划(渝教人[2014]47号)
【CateGory Index】: TN915.6
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