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Model-Based Network Scheduling and Control for Systems over the ieee 802.15.4 Network

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Journal of Systems Science & Complexity 2021年第1期34卷 281-297页

作者： ZHAO Yunbo XU Deheng HE Jiangtao XI Xugang KANG Yu College of Information Engineering Zhejiang University of TechnologyHangzhou 310023China School of Automation Hangzhou Dianzi UniversityHangzhou 310018China Department of Automation University of Science and Technology of ChinaHefei 230027China

The scheduling and control of a class of wireless networked control system is investigated,whose control loop is closed via a shared ieee 802.15.4 wireless network. By using a gain scheduler within the packet-based control framework and fitting the delay-dependent gains into a time-delay system model, a less conservative self-triggered approach is proposed to determine the sampling update,which consequently enables the design of two network scheduling algorithms to reduce the communication usage. Numerical and TrueT ime based examples illustrate the effectiveness of the proposed approach in the sense that it reduces greatly the communication usage while maintaining satisfactory control performance.

关键词： ieee 802.15.4 packet-based control scheduling wireless networked control system

Performance of ieee 802.15.4 Clusters with Power Management and Key Exchange

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Journal of Computer Science & Technology 2008年第3期23卷 377-388页

作者： Fereshteh Amini Moazzam Khan Jelena Mii Hossein Pourreza Department of Computer Science University of ManitobaWinnipegManitobaCanada

The ieee 802.15.4 specification is a recent low data rate wireless personal area network standard. While basic security services are provided for, there is a lack of more advanced techniques which are indispensable in modern personal area network applications. In addition, performance implications of those services are not known. In this paper, we describe a secure data exchange protocol based on the ZigBee specification and built on top of ieee 802.15.4 link layer. This protocol includes a key exchange mechanism. We assume that all nodes are applying power management technique based on the constant event sensing reliability required by the coordinator. Power management generates random sleep times by every node which in average fairly distributes the sensing load among the nodes. Key exchange is initiated by a cluster coordinator after some given number of sensing packets have been received by the coordinator. We develop and integrate simulation model of the key exchange and power management technique into the cluster＇s reliable sensing function. We evaluate the impact of security function and its periodicity on cluster performance.

关键词： ieee 802.15.4 security activity management simulation

An Improved Markov Model for ieee 802.15.4 Slotted CSMA/CA Mechanism

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Journal of Computer Science & Technology 2009年第3期24卷 495-504页

作者：文浩林闯陈治佳尹浩何滔 Eryk Dutkiewicz Department of Computer Science Tsinghua University Department of Physics and Engineering Macquarie UniversitySydneyAustralia

ieee 802.15.4 protocol is proposed to meet the low latency and energy consumption needs in low-rate wireless applications, however, few analytical models are tractable enough for comprehensive evaluation of the protocol. To evaluate the ieee 802.15.4 slotted CSMA/CA channel access mechanism in this paper, we propose a practical and accurate discrete Markov chain model, which can dynamically represent different network loads. By computing the steady-state distribution probability of the Markov chain, we obtain an evaluation formula for throughput, energy consumption, and access latency. Then we further analyze the parameters that influence performance including packet arrival rate, initial backoff exponent and maximum backoff number. Finally, NS2 simulator has been used to evaluate the performance of the 802.15.4 CSMA/CA mechanism under different scenarios and to validate the accuracy of the proposed model.

关键词： ieee 802.15.4 Markov model CSMA/CA mechanism

Solution to Beacon Conflict Based on ieee 802.15.4

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Transactions of Nanjing University of Aeronautics and Astronautics 2015年第5期32卷 560-565页

作者：黄海利王晓喃 School of Computer Science and Engineering Changshu Institute of Technology

One main issue of degrading ieee 802.15.4performance is the beacon conflict which increases the energy ***,ieee 802.15.4does not address a solution to avoid the beacon *** order to reduce this beacon conflict,an individual time division(ITD)algorithm based on ieee 802.15.4is *** this algorithm,a coordinator assigns the time division(TD)for each associated coordinator so that different coordinators transmit a beacon frame at different time *** this way,the beacon conflict is decreased *** experimental results show that ITD reduces both the beacon conflict and the network energy consumption,and improves the network performance.

关键词： ieee 802.15.4 coordinator time division beacon conflict

Emergency access mechanism in ieee 802.15.4 for wireless body area sensor networks

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The Journal of China Universities of Posts and Telecommunications 2009年第6期16卷 24-31页

作者： GUO Yan-yan,KANG Gui-xia,CAO Yu,ZHANG Ping Key Laboratory of Universal Wireless Communications,Ministry of Education,Beijing University of Posts and Telecommunications,Beijing 100876,China [a] Key Laboratory of Universal Wireless Communications Ministry of Education Beijing University of Posts and Telecommunications Beijing 100876 China

ieee 802.15.4 protocol has attracted much attention in research and industrial communities as candidate technology for wireless body area sensor networks（WBASNs）.ieee 802.15.4 supports the exclusive use of a wireless channel through guaranteed time slot（GTS）.However,on one hand,bandwidth underutilization rate may be lower because of the variance between the guaranteed bandwidth and the arrival *** the other hand,the waiting time for transmitting emergency notification is getting longer when the GTSs assigned to the nodes increase in *** solve these problems,in this article,a new scheme is proposed to reduce transmission delay for the alarm notification in emergent *** results are presented to validate the efficiency of the proposed scheme by comparing it with the medium access control（MAC） protocol of ieee 802.15.4.

关键词： WBASN GTS ieee 802.15.4 emergency mechanism

Optimization of MAC algorithm based on ieee 802.15.4 in indoor positioning system

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High Technology Letters 2021年第1期27卷 86-94页

作者： Sun Guanyu Qin Danyang Lan Tingting Key Laboratory of Electronic and Communication Engineering Heilongjiang UniversityHarbin 150080P.R.China

The mobility of the targets asks for high requirements of the locating speed in indoor positioning *** standard medium access control(MAC)algorithm will often cause lots of packet conflicts and high transmission delay if multiple users communicate with one beacon at the same time,which will severely limit the speed of the ***,an optimized MAC algorithm is proposed based on channel reservation to enable users to reserve beacons.A frame threshold is set to ensure the users with shorter data frames do not depend on the reservation mechanism,and multiple users can achieve packets switching with relative beacon in a fixed sequence by using frequency division multiplexing *** simulation results show that the optimized MAC algorithm proposed in this paper can improve the positioning speed significantly while maintaining the positioning ***,the positioning accuracy can be increased to a certain extent if more channel resources can be obtained,so as to provide effective technical support for the location and tracking applications of indoor moving targets.

关键词： medium access control(MAC)algorithm indoor positioning multi-channel fingerprint identification ieee 802.15.4

Multi-delay network based ieee 802.15.4 for low delay deterministic networked control systems 36

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Multi-delay network based IEEE 802.15.4 for low delay determ...

ieee 802.15.4非信标使能模式在车联网中的性能评估

第36届中国控制会议

作者： Aopeng Song Yuanqing Xia Yufeng Zhan Key Laboratory of Intelligent Control and Decision of Complex Systems School of AutomationBeijing Institute of Technology

ISBN: (纸本)9781538629185

Wireless networked control systems have gained significant popularity due to commissioning and maintenance *** 802.15.4 standard is one of wireless communication protocol for low delay deterministic *** automation,not only needs low delay but also requires the network that should has the capacity of various delay *** this paper,we propose a scheme,satisfying the muli-delay network in the networked control *** are using TI SmartRF04 EB evaluation boards with CC2530 SoC and TIMAC software stack CC2530 boards,as well as dc servo motors for a speed tracking control problem.

关键词： wireless communication ieee 802.15.4 control system multi-delay

来源： cnki会议评论

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机械设计与制造 2024年第5期399卷 113-118页

作者：周向马丽武汉交通职业学院湖北武汉430070 湖北工业大学工程技术学院湖北武汉430068

车联网是车与车之间广泛使用的网络技术,是车与车之间经济、高效的通讯渠道。ieee 802.15.4由一层简单物理层和一层节能型介质访问控制层所组成,是当前所有通讯标准中车联网网络的最佳选择。基于此,这里选择适合车联网的ieee 802.15.4... 详细信息

车联网是车与车之间广泛使用的网络技术,是车与车之间经济、高效的通讯渠道。ieee 802.15.4由一层简单物理层和一层节能型介质访问控制层所组成,是当前所有通讯标准中车联网网络的最佳选择。基于此,这里选择适合车联网的ieee 802.15.4非信标使能模式作为分析模型,将其应用于车联网中,具体包含非饱和通讯量模式和大型网络,并分别研究了ieee 802.15.4适合车联网的非信标使能模式的性能,这对车辆积极调整广播速度,在车与车之间联网通讯中取得更高的成功具有一定的参考价值。

关键词：分析模型 ieee 802.15.4 车联网(IoV) 车辆—基础设施(V2I)通讯车辆—车辆(V2V)通讯

ieee 802.15.4多跳网络MAC层的研究

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IEEE 802.15.4多跳网络MAC层的研究

作者：邹优敏同济大学

学位级别：硕士

ieee 802.15.4标准是针对低功耗、低价格的设计和提供低带宽、低速率的应用而提出的一种新兴无线个人局域网技术。它具有组网能力强、适应面广、可靠性高、节能性好等优点，可广泛应用于工业、农业、医疗等多种领域，具有广阔的应用前景... 详细信息

ieee 802.15.4标准是针对低功耗、低价格的设计和提供低带宽、低速率的应用而提出的一种新兴无线个人局域网技术。它具有组网能力强、适应面广、可靠性高、节能性好等优点，可广泛应用于工业、农业、医疗等多种领域，具有广阔的应用前景。ieee 802.15.4的网络拓扑结构包括星状与网状两种。单就星状网络而言，其网络性能是比较好的。但是，由于在实际应用中，仅仅使用星状网络是不够的。而对于802.15.4网状网络，也就是802.15.4多跳网络，其标准存在了很多不足，使得其网络性能难以满足通信要求。在信标使能网络中，存在严重的信标冲突问题。在非信标使能网络中，存在严重的隐藏节点问题。根据无线个人局域网特性，针对有信标和无信标两种网络，本文分别提出了两种算法。在信标使能方式下，提出了一种称之为信标冲突避免算法的改进算法。而在非信标使能方式下，所采用的改进算法称为MARCH算法。这种算法采用的是简化的RTS／CTS机制。通过在Linux系统下利用Network Simulator(NS2)仿真工具进行计算机仿真分析，结果表明，与原ieee 802.15.4标准相比，本文所提出的算法简单、实用，能在很大程度上减少网络冲突，并相应提高吞吐量，从而提高了网络的整体性能。

关键词：无线个人局域网 MAC ieee 802.15.4 冲突避免算法 MARCH算法 NS2