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Fast and scalable routing protocols for data center networks
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作者 Mihailo Vesovic Aleksandra Smiljanic Dusan Kostic 《Digital Communications and Networks》 SCIE CSCD 2023年第6期1340-1350,共11页
Data center networks may comprise tens or hundreds of thousands of nodes,and,naturally,suffer from frequent software and hardware failures as well as link congestions.Packets are routed along the shortest paths with s... Data center networks may comprise tens or hundreds of thousands of nodes,and,naturally,suffer from frequent software and hardware failures as well as link congestions.Packets are routed along the shortest paths with sufficient resources to facilitate efficient network utilization and minimize delays.In such dynamic networks,links frequently fail or get congested,making the recalculation of the shortest paths a computationally intensive problem.Various routing protocols were proposed to overcome this problem by focusing on network utilization rather than speed.Surprisingly,the design of fast shortest-path algorithms for data centers was largely neglected,though they are universal components of routing protocols.Moreover,parallelization techniques were mostly deployed for random network topologies,and not for regular topologies that are often found in data centers.The aim of this paper is to improve scalability and reduce the time required for the shortest-path calculation in data center networks by parallelization on general-purpose hardware.We propose a novel algorithm that parallelizes edge relaxations as a faster and more scalable solution for popular data center topologies. 展开更多
关键词 Routing protocols data center networks Parallel algorithms Distributed algorithms Algorithm design and analysis Shortest-path problem SCALABILITY
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Reliable transmission of consultative committee for space data systems file delivery protocol in deep space communication 被引量:7
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作者 Hui Li Hao Luo Faxin Yu Zheming Lu 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2010年第3期349-354,共6页
In consultative committee for space data systems(CCSDS) file delivery protocol(CFDP) recommendation of reliable transmission,there are no detail transmission procedure and delay calculation of prompted negative ac... In consultative committee for space data systems(CCSDS) file delivery protocol(CFDP) recommendation of reliable transmission,there are no detail transmission procedure and delay calculation of prompted negative acknowledge and asynchronous negative acknowledge models.CFDP is designed to provide data and storage management,story and forward,custody transfer and reliable end-to-end delivery over deep space characterized by huge latency,intermittent link,asymmetric bandwidth and big bit error rate(BER).Four reliable transmission models are analyzed and an expected file-delivery time is calculated with different trans-mission rates,numbers and sizes of packet data units,BERs and frequencies of external events,etc.By comparison of four CFDP models,the requirement of BER for typical missions in deep space is obtained and rules of choosing CFDP models under different uplink state informations are given,which provides references for protocol models selection,utilization and modification. 展开更多
关键词 deep space communication consultative committee for space data systems (CCSDS) CCSDS file delivery protocol (CFDP) RELIABLE delay.
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Data Concurrent Transmission MAC Protocol for Application Oriented Underwater Acoustic Sensor Networks 被引量:1
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作者 Xiaoxiao Zhuo Hong Yang +3 位作者 Meiyan Liu Yan Wei Guanding Yu Fengzhong Qu 《China Communications》 SCIE CSCD 2022年第10期220-237,共18页
With the increasing demand for marine exploration, underwater acoustic sensor networks (UASNs) are prone to have the characteristics of large-scale, long term monitoring, and high data traffic load. Underwater media a... With the increasing demand for marine exploration, underwater acoustic sensor networks (UASNs) are prone to have the characteristics of large-scale, long term monitoring, and high data traffic load. Underwater media access control (MAC) protocols, which allow multiple users to share the common medium fairly and efficiently, are essential for the performance of UASNs. However, the design of MAC protocols is confronted with the challenges of spatial unfairness, data eruption, and low energy efficiency. In this paper, we propose a novel data concurrent transmission (DCT) MAC protocol, which is able to exploit long propagation delay and conduct concurrent transmission. Specifically, we present the theoretical performance analysis of the proposed MAC protocol in detail and give an analytical solution of the success concurrent transmission probability between nodes. In addition, simulation results are provided to demonstrate that our proposed protocol is appropriate for UASNs and can significantly improve the performance in terms of network throughput and energy consumption. Finally, we give some typical future applications of UASNs and discuss the demands on MAC protocol design. 展开更多
关键词 underwater acoustic sensor networks MAC protocols data concurrent transmission
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Problem of Standardization of Configuration Data in Wireless Sensor Networks: The Case of Routing Protocols 被引量:1
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作者 Thomas Djotio Ndie Judith Soulamite Nouho Noutat 《Wireless Sensor Network》 2012年第7期177-184,共8页
The exploitation of Wireless Sensor Networks (WSN) is constrained by limited power, low computing power and storage and short-range radio transmission. Many routing protocols respecting these constraints were develope... The exploitation of Wireless Sensor Networks (WSN) is constrained by limited power, low computing power and storage and short-range radio transmission. Many routing protocols respecting these constraints were developed but, it still lacks formal and standardized solutions being able to help in their configuration. The configuration management that responds to this concern is very important in this type of network. It consists of the definition of data models to configure and is very necessary for the good network performance. Tangible results were obtained in traditional networks with the emergence of NETCONF and YANG standards, but on the best of our humble knowledge there are none yet in WSNs. We propose in this paper wsn-routing-protocol, a YANG data model for routing protocols configuration in WSNs. Following our model, we propose two YANG configuration data models based on the latter: they are respectively aodv for AODV and rpl for RPL. 展开更多
关键词 N Sensor Network ROUTING protocols CONFIGURATION data Model YANG
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A Message Transmission Protocol of a Mobile Data Communication Network
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作者 顾学迈 郭庆 刘忠 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1996年第4期16-20,共5页
AMessageTransmissionProtocolofaMobileDataCommunicationNetworkGUXuemai;GUOQing;LIUZhong(顾学迈)(郭庆)(刘忠)(Research... AMessageTransmissionProtocolofaMobileDataCommunicationNetworkGUXuemai;GUOQing;LIUZhong(顾学迈)(郭庆)(刘忠)(ResearchInstituteofCommun... 展开更多
关键词 ss: data COMMUNICATION MOBILE COMMUNICATION protocol
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Coati Optimization-Based Energy Efficient Routing Protocol for Unmanned Aerial Vehicle Communication 被引量:1
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作者 Hanan Abdullah Mengash Hamed Alqahtani +5 位作者 Mohammed Maray Mohamed K.Nour Radwa Marzouk Mohammed Abdullah Al-Hagery Heba Mohsen Mesfer Al Duhayyim 《Computers, Materials & Continua》 SCIE EI 2023年第6期4805-4820,共16页
With the flexible deployment and high mobility of Unmanned Aerial Vehicles(UAVs)in an open environment,they have generated con-siderable attention in military and civil applications intending to enable ubiquitous conn... With the flexible deployment and high mobility of Unmanned Aerial Vehicles(UAVs)in an open environment,they have generated con-siderable attention in military and civil applications intending to enable ubiquitous connectivity and foster agile communications.The difficulty stems from features other than mobile ad-hoc network(MANET),namely aerial mobility in three-dimensional space and often changing topology.In the UAV network,a single node serves as a forwarding,transmitting,and receiving node at the same time.Typically,the communication path is multi-hop,and routing significantly affects the network’s performance.A lot of effort should be invested in performance analysis for selecting the optimum routing system.With this motivation,this study modelled a new Coati Optimization Algorithm-based Energy-Efficient Routing Process for Unmanned Aerial Vehicle Communication(COAER-UAVC)technique.The presented COAER-UAVC technique establishes effective routes for communication between the UAVs.It is primarily based on the coati characteristics in nature:if attacking and hunting iguanas and escaping from predators.Besides,the presented COAER-UAVC technique concentrates on the design of fitness functions to minimize energy utilization and communication delay.A varied group of simulations was performed to depict the optimum performance of the COAER-UAVC system.The experimental results verified that the COAER-UAVC technique had assured improved performance over other approaches. 展开更多
关键词 Artificial intelligence unmanned aerial vehicle data communication routing protocol energy efficiency
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Reactive data collection protocol using mobile sink in wireless sensor network
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作者 Hyunwoo Nam Younghan Kim 《Journal of Measurement Science and Instrumentation》 CAS 2012年第2期179-184,共6页
We suggest event collection protocol in a specific region where sensors are deployed to detect and collect events.In the traditional multi-hop routing in wireless sensor networks reporting events to a sink node or bas... We suggest event collection protocol in a specific region where sensors are deployed to detect and collect events.In the traditional multi-hop routing in wireless sensor networks reporting events to a sink node or base-station will cause imbalanced energy consumption of static sensors.To solve this problem,we use mobile sink.In this paper,we study the design of efficiency routing protocol for supporting efficient data collecting in mobile sink wireless sensor networks(mWSNs).We suggest the following two main ideas.First,we use reactive protocol to cut off unnecessary delay.Mobile sink makes a path to access to sensor node.Second,we model mobile sink movement depending on data frequency,so we can reduce moving distance efficiently.We simulate this protocol and compare it with the traditional method.Simulation results show this protocol reduces distance significantly and is suitable for mWSNs with heavy traffic. 展开更多
关键词 wireless sensor network mobile sink protocol reactive data collection
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Modeling and Simulation Study of Space Data Link Protocol
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作者 Ismail Hababeh Rizik M. H. Al-Sayyed +2 位作者 Ja’far Alqatawna Yousef Majdalawi Marwan Nabelsi 《International Journal of Communications, Network and System Sciences》 2014年第10期440-452,共13页
This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). ... This research paper describes the design and implementation of the Consultative Committee for Space Data Systems (CCSDS) standards REF _Ref401069962 \r \h \* MERGEFORMAT [1] for Space Data Link Layer Protocol (SDLP). The primer focus is the telecommand (TC) part of the standard. The implementation of the standard was in the form of DLL functions using C++ programming language. The second objective of this paper was to use the DLL functions with OMNeT++ simulating environment to create a simulator in order to analyze the mean end-to-end Packet Delay, maximum achievable application layer throughput for a given fixed link capacity and normalized protocol overhead, defined as the total number of bytes transmitted on the link in a given period of time (e.g. per second) divided by the number of bytes of application data received at the application layer model data sink. In addition, the DLL was also integrated with Ground Support Equipment Operating System (GSEOS), a software system for space instruments and small spacecrafts especially suited for low budget missions. The SDLP is designed for rapid test system design and high flexibility for changing telemetry and command requirements. GSEOS can be seamlessly moved from EM/FM development (bench testing) to flight operations. It features the Python programming language as a configuration/scripting tool and can easily be extended to accommodate custom hardware interfaces. This paper also shows the results of the simulations and its analysis. 展开更多
关键词 Consultative COMMITTEE for SPACE data Systems Standards SPACE data Link protocol Mean END-TO-END Packet Delay Maximum Achievable Application Layer Throughput Normalized protocol OVERHEAD Telecommand Spacecrafts SPACE Instruments
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A web product data management system based on Simple Object Access Protocol
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作者 陆静平 《Journal of Chongqing University》 CAS 2003年第1期57-61,共5页
A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which incl... A new web product data management architecture is presented. The three-tier web architecture and Simple Object Access Protocol (SOAP) are combined to build the web-based product data management (PDM) system which includes three tiers: the user services tier, the business services tier, and the data services tier. The client service component uses the server-side technology, and Extensible Markup Language (XML) web service which uses SOAP as the communication protocol is chosen as the business service component. To illustrate how to build a web-based PDM system using the proposed architecture, a case PDM system which included three logical tires was built. To use the security and central management features of the database, a stored procedure was recommended in the data services tier. The business object was implemented as an XML web service so that client could use standard internet protocols to communicate with the business object from any platform. In order to satisfy users using all sorts of browser, the server-side technology and Microsoft ASP.NET was used to create the dynamic user interface. 展开更多
关键词 web-based product data management Extensible Markup Language (XML) Simple Object Access protocol (SOAP) XML web service
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基于MQTT协议的轻量化文本信息分发技术研究 被引量:1
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作者 熊风光 陈霖 +3 位作者 韩慧妍 张元 庞敏 焦世超 《计算机技术与发展》 2024年第2期90-97,共8页
随着卫星通信网络的发展,基于卫星通信网络实现手机、平板电脑等移动通信设备之间的通信成为研究的热点。由于其采用无线电波进行信号传输,且需要经过多个中继站进行信号的转发和处理,导致存在网络延时大、丢包率高以及信道狭窄等问题... 随着卫星通信网络的发展,基于卫星通信网络实现手机、平板电脑等移动通信设备之间的通信成为研究的热点。由于其采用无线电波进行信号传输,且需要经过多个中继站进行信号的转发和处理,导致存在网络延时大、丢包率高以及信道狭窄等问题。针对文本信息在卫星通信网络下的分发过程存在效率低下、可靠性不高的问题,设计一种基于MQTT(Message Queuing Telemetry Transport)协议的轻量化文本信息分发技术。该技术使用MQTT协议作为消息传输协议,在文本信息分发前对MQTT协议进行主题设计、发布订阅机制设计、设备连接设计以及设备心跳设计,确保设备之间的连通性;在文本信息的分发过程中,设计数据校验加密算法、文本信息轻量化处理方法和离线消息存储机制,保证文本信息分发的安全性、可靠性。实验结果表明:相较于传统的基于JSON数据的文本信息分发技术,该技术在提高文本信息分发效率的同时,可确保信息分发的安全性、完整性和稳定性。 展开更多
关键词 MQTT协议 轻量化 文本信息分发 数据加密 离线消息存储
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船舶机舱边缘计算系统通信技术的研究及开发
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作者 陈智君 余金阳 +3 位作者 王忠俊 余永华 宋鑫 王家鑫 《舰船科学技术》 北大核心 2024年第4期148-151,共4页
本文针对边缘设备与云平台之间的数据交互,从当前智能机舱相关系统的数据通信需求出发,提出一种基于物联网边缘计算系统框架的智能机舱边缘计算系统内设备通信方案,设计一种面向该边缘系统中运用于边缘设备的双向数据通信系统软件并进... 本文针对边缘设备与云平台之间的数据交互,从当前智能机舱相关系统的数据通信需求出发,提出一种基于物联网边缘计算系统框架的智能机舱边缘计算系统内设备通信方案,设计一种面向该边缘系统中运用于边缘设备的双向数据通信系统软件并进行测试,证明智能机舱边缘系统方案的可行性。 展开更多
关键词 边缘计算 TCP/IP MQTT协议 双向数据通信
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基于面向TTE的新型数据综合系统的设计与实现
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作者 张会新 洪应平 +1 位作者 姚玉林 杨应杰 《仪表技术与传感器》 CSCD 北大核心 2024年第1期81-86,共6页
针对传统总线无法实时网络传输,新型总线时间触发以太网(TTE)兼容IP协议和IEEE802.3协议,但TT业务和BE业务需设备满足TTE协议,实际工程缺少适用性的问题,设计了一种基于FPGA的时间触发以太网数据综合系统。该数据综合系统以FPGA作为核... 针对传统总线无法实时网络传输,新型总线时间触发以太网(TTE)兼容IP协议和IEEE802.3协议,但TT业务和BE业务需设备满足TTE协议,实际工程缺少适用性的问题,设计了一种基于FPGA的时间触发以太网数据综合系统。该数据综合系统以FPGA作为核心控制器,千兆网作为主要通信接口,在满足高速率、高宽带、高灵活的前提下,设计出数据综合模块,将多种传统总线与TTE总线良好兼容。试验结果表明:系统在同步精度高达40 ns、通信抖动仅为392 ns的前提下,数据转换收发无误码现象。同时将多种数据混合编帧,具备极高的稳定性与灵活性,为TTE网络数据服务于实际工程提供了可靠的解决方案。 展开更多
关键词 时间触发以太网 时钟同步 协议兼容 数据融合
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基于Wi-Fi的医疗设备物联网采集装置设计
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作者 杨罗宽 龚敏 刘麒麟 《中国医学装备》 2024年第7期182-184,共3页
为解决医疗设备运行数据、故障数据的采集,设计一种基于无线网络Wi-Fi的医疗设备物联网采集装置。该采集装置的设计基于STM32F407的32位微控制器与ESP8266无线模组集成的,通过Wi-Fi进行通讯的物联网数据采集装置。通过该采集装置,在配... 为解决医疗设备运行数据、故障数据的采集,设计一种基于无线网络Wi-Fi的医疗设备物联网采集装置。该采集装置的设计基于STM32F407的32位微控制器与ESP8266无线模组集成的,通过Wi-Fi进行通讯的物联网数据采集装置。通过该采集装置,在配置波特率后,能够实现通过串口等数据接口读取医疗设备的运行数据,并通过无线模组进行配网,连接到楼层网络无线接入点(AP)后,实现与物联网平台服务器的数据交互,达到对医疗设备的动态管理。装配应用该采集装置,可实现在物联网平台软件对呼吸机、高频电刀、监护仪、血液透析机等设备的数据采集应用,解决无法实现无线通讯的医疗设备的数据通讯问题,在获取通讯协议的前提下,可适配于较多该类型医疗设备的数据采集及数据发送功能,实现医院对该类型医疗设备的动态管理。 展开更多
关键词 物联网 通讯协议 数据采集装置 波特率
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基于微服务和物联网的配电网智能计量架构
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作者 郑晓斌 陈忠士 邹泽昌 《成都工业学院学报》 2024年第1期36-41,共6页
为实现电力系统向智能电网模式的演进,依赖于配电网(DN)的自动化,需要新的基础设施、技术和应用。提出一种基于微服务和物联网(IoT)的配电网自动化的智能计量设施,支持各种有助于实现配电网自动化和管理的服务。首先,在测量基础设施中... 为实现电力系统向智能电网模式的演进,依赖于配电网(DN)的自动化,需要新的基础设施、技术和应用。提出一种基于微服务和物联网(IoT)的配电网自动化的智能计量设施,支持各种有助于实现配电网自动化和管理的服务。首先,在测量基础设施中对特定硬件、设备和底层协议进行抽线;然后,利用消息队列遥测传输(MQTT)作为以事件为导向的发布/订阅协议来实现,同时支持发布/订阅和请求/响应机制来实现;最后,使用以大数据为导向的可群集软件模块来实现可扩展性。分布式状态估计(SE)和网络拓扑重构算法验证了智能计量设施支持交互和协同操作。 展开更多
关键词 智能电网 物联网 微服务 底层协议 大数据 网络拓扑
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基于SCADA-DCS通讯技术的油气开采数据自动化采集与控制系统
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作者 张强 陈锐 +1 位作者 杜永红 马潇 《自动化与仪表》 2024年第4期52-55,60,共5页
设计基于SCADA-DCS通讯技术的油气开采数据自动化采集与控制系统。系统以SCADA服务器为上层监控服务器,通过与井站现场仪器仪表实时通信,监控整个开采过程。当油气缓冲罐液位越限时,SCADA服务器自动下达指令至原油处理站DCS,启动基于智... 设计基于SCADA-DCS通讯技术的油气开采数据自动化采集与控制系统。系统以SCADA服务器为上层监控服务器,通过与井站现场仪器仪表实时通信,监控整个开采过程。当油气缓冲罐液位越限时,SCADA服务器自动下达指令至原油处理站DCS,启动基于智能PID的油泵控制器,调节油泵变频器,控制油气液位不溢出。系统使用SCADA-DCS通讯技术的MODBUS通信协议,并根据通信中断优先级分配方法,确保对中断处理时间要求高的通信请求能实时响应。实验结果表明,该系统能提升油气液位控制和紧急信息通讯效率。 展开更多
关键词 SCADA-DCS通讯 油气开采 数据自动化采集 控制系统 MODBUS通讯协议 智能PID
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基于HSA技术的IEC104协议安全设计方案
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作者 郭丽红 曹烨 +2 位作者 单锦涛 胡婷婷 纪宇菲 《南京工程学院学报(自然科学版)》 2024年第1期52-58,共7页
以电力行业广泛使用的IEC104协议为研究对象,对该协议的报文结构进行分析并找出其存在的安全隐患和漏洞;提出增加安全信息控制字段,对核心数据进行加密处理,形成安全通信协议APDUSec;在不改变原有传输模式下,采用了RSA加密算法和HMAC认... 以电力行业广泛使用的IEC104协议为研究对象,对该协议的报文结构进行分析并找出其存在的安全隐患和漏洞;提出增加安全信息控制字段,对核心数据进行加密处理,形成安全通信协议APDUSec;在不改变原有传输模式下,采用了RSA加密算法和HMAC认证算法,确保了协议的保密性、完整性和不可否认性;为解决电力通信系统中存在的通信链路故障,借助HSA技术来解决环路检测和分片安全问题.仿真测试结果表明:APDUSec在一定程度上能有效满足信息保密与身份认证的需要,HSA技术在检测环路、传输效率等方面具有一定的优势.本文结果对IEC104协议运行的安全性和可靠性研究具有一定的参考价值. 展开更多
关键词 IEC104 协议数据单元 安全协议 安全检测
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船舶无线网络的节点数据采集方法
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作者 刘华 《舰船科学技术》 北大核心 2024年第11期169-172,共4页
为准确实现对船舶运行状态的实时监控和数据分析,及时发现潜在的问题和风险,设计船舶无线网络的节点数据采集方法。该方法以分布式追踪系统Zipkin为基础,设计无线网络节点数据采集技术框架,在该技术框架内,用户通过连接分布式追踪系统Zi... 为准确实现对船舶运行状态的实时监控和数据分析,及时发现潜在的问题和风险,设计船舶无线网络的节点数据采集方法。该方法以分布式追踪系统Zipkin为基础,设计无线网络节点数据采集技术框架,在该技术框架内,用户通过连接分布式追踪系统Zipkin,使用分布式追踪系统Zipkin内的传感器对船舶无线网络节点进行追踪后,对分布式追踪系统Zipkin内的传感器节点和船舶无线网络节点布局进行优化处理,再通过节点数据采集控制器从优化后的船舶无线网络节点内采集数据,同时通过Socket通信协议对节点数据进行缓存后,发送到服务器端,服务器端启动处理线程和同步线程,以广播的方式将采集到的船舶无线网络节点数据发送给用户,实现船舶无线网络的节点数据采集。实验表明,该方法具备较强的传感器节点和无线网络节点布局优化能力,可有效采集船舶无线网络节点上的信号和数据,应用性能较强。 展开更多
关键词 无线网络 点数据采集 分布式追踪系统 控制器 Socket通信协议
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《空间数据与信息传输系统航天器1553B总线通信协议》国家标准解读
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作者 吕良庆 周玉霞 许冬彦 《航天标准化》 2024年第2期31-35,共5页
1553B总线在我国已广泛应用于各式各类的航天器中,取得了丰富的应用实践经验积累。制定GB/T 43669—2024《空间数据与信息传输系统航天器1553B总线通信协议》是为了解决1553B总线在各型号任务中制定的应用通信协议不够一致、难以跨任务... 1553B总线在我国已广泛应用于各式各类的航天器中,取得了丰富的应用实践经验积累。制定GB/T 43669—2024《空间数据与信息传输系统航天器1553B总线通信协议》是为了解决1553B总线在各型号任务中制定的应用通信协议不够一致、难以跨任务、跨组织重用的问题,解决与底层1553B总线协议衔接的标准化设计问题。该标准提炼总结了我国1553B总线在航天器上应用实践的共性设计,借鉴了ECSS-E-ST-50-13C写作风格和思路,兼顾了与其在概念上和设计上的衔接,有利于今后的国际合作。本文介绍了该标准制订的背景、目的意义,以及标准主要内容的编制思路。 展开更多
关键词 空间数据与信息传输系统 1553B总线 通信协议 航天器
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基于LEACH协议的能量优化方法
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作者 李波 郝丽君 +1 位作者 陈嵩杰 唐孟麒 《计算机工程与设计》 北大核心 2024年第3期656-662,共7页
针对低功耗自适应聚类协议产生的整体能耗不均及网络生命周期短的问题,提出一种改进的能量优化方法。结合能量模型、节点发送及融合数据的综合能耗计算簇头比例;利用节点剩余能量与节点基站间的距离,优化成簇阶段中簇头选取阈值公式。... 针对低功耗自适应聚类协议产生的整体能耗不均及网络生命周期短的问题,提出一种改进的能量优化方法。结合能量模型、节点发送及融合数据的综合能耗计算簇头比例;利用节点剩余能量与节点基站间的距离,优化成簇阶段中簇头选取阈值公式。在普通节点入簇阶段,引入簇规模密度,避免簇规模差距过大,采用就近原则与簇密度规模更新簇头。在数据传输阶段,引入“热区”边界对簇头分类,不同类簇头采用不同的数据传输方式。仿真结果表明,所提方法能均衡网络能耗且延长网络生命周期。 展开更多
关键词 能量优化 低功耗自适应聚类协议 分簇 生命周期 热区 数据传输 阈值
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一种支持不确定性协议的船载网络数据集中方法
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作者 陈国良 王坤 《起重运输机械》 2024年第18期56-62,共7页
文中针对船载网络数据集中过程中因设备通信方式不同,协议具有异构性,不确定性设备协议变动使数据接入系统复杂的问题,提出一种基于TCP/IP协议的可配置数据集中方法。首先增加采集适配层将设备通信接口统一成工业以太网,船载设备通过转... 文中针对船载网络数据集中过程中因设备通信方式不同,协议具有异构性,不确定性设备协议变动使数据接入系统复杂的问题,提出一种基于TCP/IP协议的可配置数据集中方法。首先增加采集适配层将设备通信接口统一成工业以太网,船载设备通过转以太网模块实现物理层接入,使数据经以太网传输到数据管理平台;其次将网络协议解析处理过程描述成解析配置表,引入用户配置机制,实现对新设备协议的按需变动;最后借鉴有限状态及思想设计不确定协议的解析和数据抽取算法。实验结果表明:该船载设备数据集中方法可对采集数据字段颗粒度抽取,避免因通信协议变动重新编写解析和处理程序,具有良好的灵活性和普适性。 展开更多
关键词 船载传感器网络 不确定性协议 数据采集 TCP/IP协议
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