Heterogeneous wireless network management
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基于Fuzzy丢包区分的TCP自适应拥塞控制算法作者:吴小川张治学来源:《计算机应用》2013年第07期文章编号摘要:针对在有线/无线的异构网络中,传统有线环境下的传输控制协议(TCP)把所有丢包简单地归因于网络拥塞,严重影响了混合网络环境下的TCP传输性能的问题,提出了一种新的基于模糊理论的自适应控制算法。
该算法选取了新的网络参数,运用Fuzzy方法对网络状态进行综合评价,并基于反馈理论的方法建立了新的自适应控制模型,即对评价结果集进行加权求和,得出网络性能指数,将其作为输入因子进入下一次计算过程,并调整各参数权重。
仿真表明,该算法能够较好反映混合网络的真实拥塞状况,具有较好的网络适应性,比当前主要TCP算法具有更好的拥塞控制效果。
该算法对在多参数,使用模糊方法背景下,混合网络拥塞及其自适应控制研究进行了新的探索。
关键词:自适应算法;异构网络;传输控制协议;拥塞控制中图分类号:TP393.07文献标志码:A英文标题networks英文作者名英文地址(1. Electronic and Information Engineering School, Henan University of Science and Technology,Technology, Luoyang Henan 471023, China英文摘要Abstract:In the hybrid wired/wireless network, the traditional Transmission Control Protocol (TCP) versions in wired network simply ascribe packet loss to congestion, which causes unnecessary performance degradation. To solve this problem, a new adaptive control algorithm based on fuzzy theory was proposed. It selected new network status parameters, and used fuzzy loss differentiating method to make comprehensive evaluation out of network status, and it was based on feedback theory method, finally built an adaptive control model, i.e. getting the evaluation result set, then yielding theentered into next evaluation cycle as one of the inpThe simulation results show this algorithm better reflects the real congestion status of hybrid network, has better network adaptability and performs better than current main TCP mechanisms. This algorithmof hybrid network congestion and its adaptive control research.英文关键词adaptive algorithm; heterogeneous network; Transmission Control Protocol (TCP); congestion control0 引言在无线/有线混合的网络环境中,传统传输控制协议(Transmission Control Protocol, TCP)将丢包简单归因于网络拥塞,严重影响了异构网络环境中TCP的传输性能。
大规模物联网中多层次立体异构网络拓扑研究作者:顾磊黄辉林钱昕来源:《中兴通讯技术》2014年第06期摘要:物联网中的多层次立体异构网络可以将机器所产生的数据局部收集至数据采集器并连接到基础设施网络和云端,为用户提供基于物联网的智慧信息服务。
针对多层次异构网络的模型HetNet,给出了多层次立体异构网络模型 HetNet的时间延迟闭合式的一般情形。
结果表明通过布置高效率数据采集器,信息可以从机器传输到云端,从而大幅降低平均延迟。
这为下一代无线服务提供商的多层次异构物联网网络的设计提供了有力的支持。
关键词:物联网;多层次立体异构网络;数据采集器;时间延迟Abstract: In the machine-to-machine multilayer heterogeneous network, the data produced by a machine can be constellated to data aggregators and connected to the infrastructure network and cloud terminal. This can provide the intelligence information service based on the Internet of Things to the users. In this paper, our mathematical analysis provides general analytical closed-form end-to-end delay of HetNet, the model of multilayer heterogeneous network. The results show that by the arrangement of the high-efficiency data aggregator, the information can be sent from machine to cloud terminal and greatly reduce average delay. It also provides strong support for the design of multilayer heterogeneous network of wireless network service provider of next generation.Key words: machine-to-machine; multi-layer heterogeneous network architecture; data aggregator; time delay中图分类号:TP393 ; ;文献标志码:A ; 文章编号:1009-6868 (2014) 06-0048-04物联网[1-7]指的是物与物间互相通信的网络,第三代合作伙伴计划(3GPP)也针对基于云服务的物联网通信发起了专门的会话[8-10]。
2020年4月Journal on Communications April 2020 第41卷第4期通信学报V ol.41No.4异构蜂窝网络中分层任务卸载:建模与优化赵临东1,2,庄文芹1,2,陈建新1,2,周亮1,2(1. 南京邮电大学通信与网络技术国家工程研究中心,江苏南京 210003;2. 南京邮电大学宽带无线通信与传感网技术教育部重点实验室,江苏南京 210003)摘 要:为提高计算任务卸载的效率,提出了一种基于D2D通信、移动边缘计算和云计算的分层任务卸载框架,并引入D2D协作中继技术辅助用户接入远端计算资源。
针对所提任务卸载框架在多用户场景中可能存在上行通信拥塞、边缘计算资源受限、D2D复用干扰和云计算回程时延等问题,设计了一种基于博弈论的卸载调度和负载均衡方案,充分利用了所提任务卸载框架中各层计算和通信资源。
仿真结果表明,所提方案能够有效降低端到端时延和卸载能耗,并在资源受限的条件下具有良好的稳定性。
关键词:分层任务卸载;移动边缘计算;D2D通信;云计算;博弈论中图分类号:TN92文献标识码:Adoi: 10.11959/j.issn.1000−436x.2020081Hierarchical task offloading in heterogeneouscellular network: modeling and optimizationZHAO Lindong1,2, ZHUANG Wenqin1,2, CHEN Jianxin1,2, ZHOU Liang1,21. National Engineering Research Center of Communication and Network Technology,Nanjing University of Posts and Telecommunications, Nanjing 210003, China2. Key Laboratory of Broadband Wireless Communication and Sensor Network Technology (Ministry of Education),Nanjing University of Posts and Telecommunications, Nanjing 210003, ChinaAbstract: To improve the efficiency of computation offloading, a hierarchical task offloading framework based on de-vice-to-device (D2D) communication, mobile edge computing and cloud computing was proposed, in which cooperative D2D relay technology was introduced to assist users to access remote computing resources. Considering the negative ef-fects of uplink channel congestion, limited edge computing capability, D2D reuse interference and backhaul delay of cloud computing in the multi-user scenario of the proposed framework, a game theory based offloading scheduling and load balancing scheme was developed by fully taking advantage of the computing and communication resources in the proposed framework. The simulation results demonstrate that the proposed scheme can effectively reduce end-to-end de-lay and offloading energy consumption, and also has good stability even when the network resources are limited.Key words: hierarchical task offloading, mobile edge computing, device-to-device communication, cloud computing, game theory1 引言随着第五代移动通信技术(5G, the fifth gener-ation)的应用,触觉互联网等新型多媒体服务和自动驾驶等人工智能应用将成为移动用户的热门选择[1-2]。
第44卷第3期2022年5月沈 阳 工 业 大 学 学 报JournalofShenyangUniversityofTechnologyVol44No3May2022
收稿日期:2020-11-13.基金项目:陕西省科技计划项目(2018JM6099).作者简介:许知博(1986-),男,河南尉氏人,高级工程师,硕士,主要从事电力系统信息化及通信等方面的研究.
doi:10.7688/j.issn.1000-1646.2022.03.15考虑网络吞吐量的异构无线传感器网络分簇路由算法
许知博1,2,段 新3(1西安电子科技大学电子信息学院,西安710126;2陕西省地方电力(集团)有限公司信息化工作部,西安710075;3陕西省地方电力物资有限公司,西安710038)
摘 要:针对在异构无线传感器网络信息聚类过程中,当层数为3~5层时,存在网络吞吐量较低的问题,提出一种异构无线传感器网络分簇路由算法.分析异构无线传感器网络能耗的无线电一阶模式,构建异构无线传感器网络的能耗模型.当簇群请求节点接收到发送于簇头的码分多址编码与时分多址时隙后,转发数据并使其稳定传输;引入狼群算法建立路由路径,实现异构无线传感器网络分簇路由算法优化.结果表明,异构无线传感器网络层数为3~5时的网络吞吐量均得到提高.关 键 词:狼群算法;异构无线传感器网络;聚类路由算法;多路径衰落模型;自由空间模型;数据稳定性;多址编码;路径匹配中图分类号:TP301 文献标志码:A 文章编号:1000-1646(2022)03-0326-05
Clusteringroutingalgorithmforheterogeneouswirelesssensornetworksconsideringnetworkthroughput
XUZhibo1,2,DUANXin3(1.SchoolofElectronicEngineering,XidianUniversity,Xi’an710126,China;2.InformatizationDepartment,ShaanxiProvincialElectricPower(Group)Co.Ltd.,Xi’an710075,China;3.ShaanxiProvincialElectricPowerSuppliesCo.Ltd.,Xi’an710038,China)