检索结果-南通市图书馆

Traffic-prediction-assisted dynamic power saving mechanism for IEEE 802.16e wireless MANs

在线全文

学校读者我要写书评

暂无评论

Journal of Central South University 2013年第6期20卷 1552-1558页

作者：陆绍飞王建新荣辉桂秦拯 School of Information Science and Engineering Hunan University School of Information Science and Engineering Central South University

How to reduce the energy consumption powered mainly by battery to prolong the standby time is one of the crucial issues for IEEE 802.16e wireless *** predicting the next downlink inter-packet arrival time,three traffic-prediction-assisted power saving mechanisms based on P-PSCI,i.e.,PSCI-PFD,PSCI-ED and PSCI-LD,were *** addition,the corresponding adjustment strategies for P-PSCI were also presented when there were uplink packets to be transmitted during sleep *** results reveal that compared with the sleep mode algorithm recommended by IEEE 802.16e,the proposed mechanism P-PSCI can improve both energy efficiency and packet delay for IEEE 802.16e due to the consideration of the traffic characteristics and rate ***,the results also demonstrate that PSCI-PFD (a=-2) significantly outperforms PSCI-ED,PSCI-LD,and the standard sleep mode in IEEE 802.16e is in terms of energy efficiency and packet delay.

关键词： sleep mode power saving traffic prediction IEEE 802.16e

Uplink power saving Potential of Cellular System with Fixed Relays

在线全文

学校读者我要写书评

暂无评论

Journal of Shanghai Jiaotong university(Science) 2007年第2期12卷 223-228,233页

作者：史宏逵戎蒙恬刘涛喻丹 Dept.of Electronic Eng. Shanghai Jiaotong Univ. Corporate Technology Siemens Ltd.

This paper presented a scheme of relayed cellular mobile telecommunication network,which only employs fixed digital relays and not more than two-hop relay *** saving potential of the network is deeply studied under the assumption of not occupying additional frequency bands(*** share the same frequency bands as used by the base stations).Theoretical analysis and simulation results have both shown that,with the same radio coverage requirement,the necessary effective transmission powers in such a relayed network have greatly decreased compared to conventional cellular network.

关键词： digital relay fixed relay two-hop cellular system power saving

An improved dynamic user equipment power saving mechanism for LTE system and performance analysis

在线全文

学校读者我要写书评

暂无评论

Science China(Information Sciences) 2010年第10期53卷 2075-2086页

作者： XU HaiBo, TIAN Hui , HUANG Bo & ZHANG Ping Key Laboratory of Universal Wireless Communications, Ministry of Education Beijing University of Posts and Telecommunications, Beijing 100876, China 1. Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

In order to minimize the power consumption of user equipments (UEs), and further to support various services and transmissions of large amount of data, the power saving mechanisms have been investigated for most remarkable wireless systems. In this paper, an improved dynamic discontinuous reception (D-DRX) scheme is presented for LTE system, which is able to adaptively adjust the inactivity timer and the sleep period of UEs’ receivers. Moreover, theoretical analysis based on the Markov chain is provided for the D-DRX scheme. Several numerical examples quantitatively show that the D-DRX scheme can capture various packet arrival patterns and scheduling behaviors of system to make a better tradeoff between power saving and packet delay by considering the length of packet queue.

关键词： power saving DRX Markov chain LTE-advanced

The research of power saving frequency conversion speed regulation experiment system

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Coal Science & Engineering(China) 2008年第1期14卷 152-156页

作者：仲伟堂 School of Electrical and Control Engineering Liaoning Technical UniversityHuludao 125105China

A power saving frequency difference controlling method was introduced by the double inverter and motor experiment *** characters of the system under differ- ent loads were *** theoretical analysis and experiment results show the frequency difference method is a ideal power saving speed regulation method for the dou- ble inverter and motor *** experiment system is simply structured,convenient to operate and provides a new way of character testing for frequency conversion speed regulation.

关键词： power saving speed regulation asynchronous motor frequency differencecontrolling