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Downlink energy efficiency modeling and optimization with backhaul awareness and interference price in ultra cellular HetNet

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The Journal of China Universities of Posts and Telecommunications 2019年第2期26卷 67-81页

作者： Li Bo Sun xuehong Li Chunshu xue kaiping Zhang Xiaoguang Ningxia Key Laboratory of Intelligent Sensing for Desert Information Ningxia UniversityYinchuan 750021China Department of Electronic Engineering and Information Science University of Science and Technology of ChinaHefei 230026China Academy of Opto-Electronics Chinese Academy of SciencesBeijing 100080China

The cellular heterogeneous network(HetNet) with ultra dense small cells is called ultra cellular *** energy efficiency for this network is very important for future green wireless *** data rates and power consumptions for three parts(i.e.,macro cells,small cells,and mixed backhaul links) in ultra cellular HetNet are jointly formulated to model downlink energy efficiency considering the active base stations(BSs) and inactive ***,in order to decrease the downlink co-channel interference,the interference price functions are also jointly set up for the three parts in ultra cellular ***,energy efficiency optimization iterative algorithm scheme using the fractional programming and Lagrangian multiplier with constraints for density of ultra dense small cells and fraction of mixed backhaul links is presented with interference *** convergence and computation complexity are also proved in this *** numerical simulations finally demonstrate convergence behavior of the proposed *** comparison,some conclusion can be *** energy efficiency of system is lower as the density of small cell is *** effect on maximizing energy efficiency with interference price outperforms that without interference *** the energy efficiency increases as the fraction of mixed backhaul links is higher because of more power consumption in the microwave backhaul links.

关键词： ultra cellular energy efficiency optimization backhaul link interference price

Privacy-Preserving Prepayment Based Power Request and Trading in Smart Grid

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China Communications 2018年第4期15卷 14-27页

作者： Shaohua Li Xiang Zhang kaiping xue Lijie Zhou Hao Yue Department of Electronic Engineering and Information Science University of Science and Technology of China Hefei 230027 Chin Science and Technology on Communication Networks Laboratory Shijiazhuang Hebei 050081 China Department of Computer Science San Francisco State University San Francisco CA 94132 USA.

Demand response has been intensively studied in recent years. It can motivate customers to change their consumption patterns according to the dynamic(time-varying) electricity price, which is considered to be the most cost-effective and reliable solution for smoothing the demand curve. However, many existing schemes, based on users' demand request in each period, require users to consume their requested electricity exactly, which sometimes causes inconvenience and losses to the utility, because customers cannot always be able to consume the accurate electricity demand due to various personal reasons. In this paper, we tackle this problem in a novel approach. Instead of charging after consumption, we adopt the prepayment mechanism to implement power request. Furthermore, we propose a trading market running by the control center to cope with the users' dynamic demand. It is noteworthy that both users' original demand and trading records are protected against potential adversaries including the curious control center. Through the numerical simulation, we demonstrate that our scheme is highly efficient in both computation and communication.

关键词： Demand response power request smart grid prepayment privacy preserving.

Multi-Person Device-Free Gesture Recognition Using mmWave Signals

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China Communications 2021年第2期18卷 186-199页

作者： Jie Wang Zhouhua Ran Qinghua Gao Xiaorui Ma Miao Pan kaiping xue School of Information Science and Technology Dalian Maritime UniversityDalian 116026China Faculty of Electronic Information and Electrical Engineering Dalian University of TechnologyDalian 116023China Department of Electrical and Computer Engineering University of HoustonHouston 77004USA Department of Information Security University of Science and Technology of ChinaHefei 230027China

Device-free gesture recognition is an emerging wireless sensing technique which could recognize gestures by analyzing its influence on surrounding wireless signals,it may empower wireless networks with the augmented sensing *** have made great achievements for singleperson device-free gesture ***,when multiple persons conduct gestures simultaneously,the received signals will be mixed together,and thus traditional methods would not work well ***,the anonymity of persons and the change in the surrounding environment would cause feature shift and mismatch,and thus the recognition accuracy would degrade *** address these problems,we explore and exploit the diversity of spatial information and propose a multidimensional analysis method to separate the gesture feature of each person using a focusing sensing ***,we also present a deep-learning based robust device free gesture recognition framework,which leverages an adversarial approach to extract robust gesture feature that is insensitive to the change of persons and ***,we also develop a 77GHz mmWave prototype system and evaluate the proposed methods *** results reveal that the proposed system can achieve average accuracies of 93%and 84%when 10 gestures are conducted in Received:Jun.18,2020 Revised:Aug.06,2020 Editor:Ning Ge different environments by two and four persons simultaneously,respectively.

关键词： device-free gesture recognition wireless sensing multi-person deep-learning

HICUS:A QUASI-STRUCTURED P2P SYSTEM BASED ON HIERARCHICAL INTEREST

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Journal of Electronics(China) 2009年第2期26卷 198-204页

作者： Zhou Xiaobo xue kaiping Zhou Jian Lu Hancheng Hong Peilin The Information Network Lab of EEIS Department University of Science and Technology of China Hefei 230027 China

The key problem in unstructured P2P system is how to control "Flood".Some studies focus on constructing more efficient topology while others focus on better query *** paper presents HICUS(Hierarchical Interest-driven Community-based Unstructured System) motivated by a basic thought-whether the resources correlate with topology distinguishes structured and unstruc-tured P2P *** introducing hierarchical "interest",HICUS organizes a quasi-structured topology through a pure distributed way,and provides a new platform for query *** study the procedure and performance of topology organization,and the simulations show that HICUS forms a small-world which can significantly improve the routing efficiency.

关键词： HICUS(Hierarchical Interest-driven Community-based Unstructured System) P2P Quasi-structured Interest and community-based

Building a Large-Scale and Wide-Area Quantum Internet Based on an OSI-Alike Model

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China Communications 2021年第10期18卷 1-14页

作者： Zhonghui Li kaiping xue Jian Li Nenghai Yu Jianqing Liu David S.L.Wei Qibin Sun Jun Lu School of Cyber Security University of Science and Technology of ChinaHefeiAnhui 230027China School of Information Science and Technology University of Science and Technology of ChinaHefeiAnhui 230027China Department of Electrical and Computer Engineering University of Alabama in HuntsvilleHuntsvilleAL 35899USA Department of Computer and Information Science Fordham UniversityBronxNY 10458USA

The theory and experiment of quantum information have been studied extensively in recent years,and the feasibility of quantum communication has been *** the fundamental technology is not yet mature,research on quantum internet should be *** implement quantum internet,an architecture that describes how quantum nodes are linked to form networks and how protocol functions are vertically composed need to be developed *** this paper,we present a novel design of a clusterbased structure to describe how quantum nodes are interconnected,and how the structure can improve the performance of qubit transmission and reduce the network *** idea of the quantum local area network(QLAN)is proposed as an essential component of the quantum ***,each quantum repeater links to neighboring repeaters to form a core network,and multiple QLANs are connected through the core *** core network can be grouped into different hierarchical quantum repeater networks according to needed service *** the sake of interoperability and fast prototyping,we adopt the idea of OSI layering model of the current Internet in the design of quantum ***,we elaborate on the composition of quantum nodes and the realization of end-to-end communication.

关键词： quantum internet entanglement swapping quantum repeater teleportation

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面向链路比特流的未知帧关联分析

电子与信息学报 2017年第2期39卷 374-380页

作者：薛开平柳彬王劲松李威薛颖杰中国科学技术大学信息科学技术学院合肥230027 西南电子电信技术研究所成都610041

在电子对抗中,截获到对方的通信比特流序列之后,当链路协议类型未知时,现有的协议解析工具往往无法分析比特流所承载的有用信息。为了获取比特流承载信息,首先需要切分比特流得到链路帧。该文根据链路帧结构的一般规律,提出一种基于数... 详细信息

在电子对抗中,截获到对方的通信比特流序列之后,当链路协议类型未知时,现有的协议解析工具往往无法分析比特流所承载的有用信息。为了获取比特流承载信息,首先需要切分比特流得到链路帧。该文根据链路帧结构的一般规律,提出一种基于数据挖掘的比特流切分算法。通过频繁序列统计、关联规则分析以及关联规则整合,识别出比特流中标识帧起始的多重关联规则序列。测试结果表明,该算法能够从未知比特流中提取有效的切分标识,正确实现比特流切分。与同类基于数据挖掘的比特流分析方法相比,该算法复杂度低,输出结果唯一且可信度高。

关键词：链路比特流未知帧频繁统计关联分析切分

天地一体化网络无缝切换和跨域漫游场景下的安全认证增强方案

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通信学报 2019年第6期40卷 138-147页

作者：薛开平周焕城孟薇李少华中国科学技术大学信息科学技术学院

由多种异构网络融合而成的天地一体化网络受到了研究者的广泛关注,但是其由于拓扑复杂、用户规模庞大而面临诸多安全威胁,容易出现链路切换和用户跨域漫游的情况。针对天地一体化网络的特点,提出了一种适用于天地一体化网络无缝切换和... 详细信息

由多种异构网络融合而成的天地一体化网络受到了研究者的广泛关注,但是其由于拓扑复杂、用户规模庞大而面临诸多安全威胁,容易出现链路切换和用户跨域漫游的情况。针对天地一体化网络的特点,提出了一种适用于天地一体化网络无缝切换和跨域漫游场景下的安全认证增强方案,基于安全凭证(Token)与散列链的结合,实现了用户与拜访域的双向快速认证,同时支持用户在拜访域中的合理计费。此外,针对天地一体化网络中卫星接入点频繁切换问题,提出了2种无缝切换机制以确保用户通信的连续性。安全性分析结果表明,所提方案不仅满足跨域漫游所必备的安全特性,还能够实现用户在拜访域的合理计费。

关键词：天地一体化网络漫游无缝切换安全认证计费

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基于MPTCP的多路径传输优化技术综述

计算机研究与发展 2016年第11期53卷 2512-2529页

作者：薛开平陈珂倪丹张泓洪佩琳中国科学技术大学电子工程与信息科学系合肥230027 中国科学院无线光电通信重点实验室(中国科学技术大学) 合肥230027

新型网络环境致力于为用户提供广覆盖、高带宽、包含各种多媒体业务的服务,而多种接入技术并存的网络环境为无处不在的高质量服务提供了可能.为了适应异构环境,用户终端通常配置多个接口(比如WIFI和4G),通信终端之间可能存在多条路径.多... 详细信息

新型网络环境致力于为用户提供广覆盖、高带宽、包含各种多媒体业务的服务,而多种接入技术并存的网络环境为无处不在的高质量服务提供了可能.为了适应异构环境,用户终端通常配置多个接口(比如WIFI和4G),通信终端之间可能存在多条路径.多径TCP协议(multipath TCP,MPTCP)是IETF MPTCP工作组提出的新型传输层多径协议,它在兼容TCP协议的基础上,同时利用多条路径的传输能力来进行数据传输,提高带宽利用率,增强连接的恢复能力,并且能够自适应地将数据从拥塞路径转移到非拥塞路径.近年来国内外机构先后作出了大量的研究,逐步使得MPTCP由概念走向实用.总结和阐述了MPTCP相关方面的研究现状,其中包括仿真实现与实际部署、乱序控制、联合拥塞控制、能耗管理、安全以及关于路径选择、移动性和QoS、数据中心中的应用等其他方面的研究.最后给出总结和展望.

关键词：多路径多径TCP协议调度算法拥塞控制能耗管理安全

802.16e系统中一种节能的实时业务数据调度算法

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计算机研究与发展 2011年第9期48卷 1608-1615页

作者：薛开平朱斌洪佩琳卢汉成中国科学技术大学电子工程与信息科学系合肥230027

在802.16e系统中,当多个拥有实时业务的MS同时处在休眠模式时,BS的调度结果不仅决定了这些实时业务的QoS,还会影响到网络的平均节能效率.针对这个问题提出了一种新的节能数据调度算法.该算法具有两个方面的技术特点:1)通过调整新加入的M... 详细信息

在802.16e系统中,当多个拥有实时业务的MS同时处在休眠模式时,BS的调度结果不仅决定了这些实时业务的QoS,还会影响到网络的平均节能效率.针对这个问题提出了一种新的节能数据调度算法.该算法具有两个方面的技术特点:1)通过调整新加入的MS休眠模式的启动时间,使得各MS的侦听窗口尽量分散并实现系统负载在OFDM帧上较为均匀的分布,以平滑BS调度器的输入;2)对目前广泛使用的实时业务调度算法EDF进行改进,提高处在休眠状态的MS的数据调度优先级.仿真结果表明,该算法在保证系统QoS的同时,不仅能够较大地提高了网络的平均节能效率,还降低了系统的整体信令开销.

关键词： 802.16e 休眠模式实时业务调度策略节能