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IEEE International Mediterranean Conference on Communications and networking (IEEE MeditCom)

作者： Samonaki, Maria Bletsas, Aggelos Tech Univ Crete Sch Elect & Comp Engn Khania Greece Tech Univ Munich TUM Chair Commun Networks LKN Munich Germany Rutgers Univ State Univ New Jersey Dept ECE Winlab New Brunswick NJ USA

ISBN: (纸本)9798350309492;9798350309485

This paper revisits the problem of time synchronization and localization in wireless networks with approximate message passing. A simple yet efficient, approximate Gaussian Belief Propagation (GBP) algorithm for cooperative localization is proposed. Compared to prior art, the algorithm exploits only one-way measurements, as well as simplified equations, not offered before in the literature. The joint time offset and location estimation problem is then studied, and a non-cooperative approximate GBP algorithm is proposed, where agents communicate only with anchors, again with one-way (and not round-trip) measurements. Both proposed algorithms perform close to state-of-the-art methods while offering minimal total communication overhead, which for localization, is smaller by a factor of 100 compared to the prior art.

关键词： network synchronization Localization Message Passing Gaussian Belief Propagation (GBP)

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How to Implement Mutual network synchronization in the Presence of Large Cross-Coupling Delays

How to Implement Mutual Network Synchronization in the Prese...

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Joint Conference of the European-Frequency-and-Time-Forum / IEEE International Frequency Control Symposium (EFTF/IFCS)

作者： Wetzel, L. Prousalis, D. Julicher, F. Riaz, R. Hoyer, C. Joram, N. Ellinger, F. Max Planck Inst Phys Komplexer Syst Dresden Germany Tech Univ Dresden Chair Circuit Design & Network Theory Dresden Germany

ISBN: (数字)9781665497183

ISBN: (纸本)9781665497183

Mutual synchronization without a reference oscillator has shown to scale advantageously with system size while being robust to noise. However, the complexity of its implementation has so far hindered its way into technical application. We show that the issue can be addressed using concepts from delay dynamical systems theory. These allow to predict the properties of self-organized synchronization, necessary to guide the architecture design of networks that implement the mutual synchronization concept. We confirm the theoretical predictions with numerical simulations.

关键词： network synchronization control theory

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Boosting Brownian-inspired games with network synchronization

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CHAOS SOLITONS & FRACTALS 2023年第1期168卷

作者： Lai, Joel Weijia Cheong, Kang Hao Singapore Univ Technol & Design SUTD Sci Math & Technol Cluster 8 Somapah Rd Singapore 487372 Singapore

In this study, we have applied a mean-field synchronization approach to a network of dynamic agents. We consider a network of connecting agents whose positions are affected by mean-field synchronization. Based on this position, one can choose which of the two Parrondo's games to play using a decision-making heuristic. This study reveals the counterintuitive result of achieving a winning outcome by combining two losing strategies through network synchronization and utilizing a real-world decision-making heuristic of preferences. We have also investigated the effects of varying network parameters on the emergence of Parrondo's paradox.

关键词： Decision-making network synchronization Parrondo's paradox Social dynamics

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Modern Trends in the Development of network synchronization Systems. From Plesiochronous to Coherent networks

Modern Trends in the Development of Network Synchronization ...

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Conference on Systems of Signal synchronization, Generating and Processing in Telecommunications (SYNCHROINFO)

作者： Schwartz, M. L. Ryzhkov, A., V Moscow Tech Univ Commun & Informat Moscow Russia

ISBN: (纸本)9781665415491

For new generations of communication networks, the tasks of increasing the speed and amount of transmitted information are being set, which requires the corresponding output from the network infrastructure. First of all, this concerns systems of clock and time network synchronization. The development processes of communication network technologies have led to the need for the evolution of the frequency (clock) synchronization system to time and frequency-time synchronization systems. And in the future, coherent systems of time-frequency support are already being considered. This article deals with the development of sources and the evolution of synchronization systems for telecommunication networks. It is based on the recommendations of the International Telecommunication Union and the authors' experience in this area of expertise.

关键词： network synchronization Time and frequency synchronization SDH 3G 4G 5G 6G PRTC Precision Time Protocol (PTP) Synchronous Ethernet (SyncE) Coherent mode of network synchronization GNSS

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Dynamic coupling enhances network synchronization 11

Dynamic coupling enhances network synchronization

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8th International-Federation-of-Automatic-Control (IFAC) Symposium on Mechatronic Systems (MECHATRONICS) / 11th International-Federation-of-Automatic-Control (IFAC) Symposium on Nonlinear Control Systems (NOLCOS)

作者： de Jonge, W. Ramirez, J. Pena Nijmeijer, H. Eindhoven Univ Technol Dept Mech Engn POB 513 NL-5600 MB Eindhoven Netherlands CICESE Div Appl Phys Dept Elect & Telecommun Carr Ensenada Tijuana 3918 Ensenada 22860 Baja California Mexico

In the study of network synchronization it is common to consider that the nodes in the network interact through static and diffusive couplings. However, this type of couplings has a limitation: for certain systems and certain network topologies, the maximum number of nodes that can be synchronized is relatively small. This paper presents a potential solution for relaxing the aforementioned limitation. In particular, it is demonstrated that if the static couplings in the network are replaced by dynamic interconnections then the number of nodes that can be synchronized is increased. As particular example, a star network of Hindmarsh-Rose neurons is considered. The stability of the synchronous solution in the network is investigated by using the Master Stability Function approach in combination with the largest transverse Lyapunov exponents. Ultimately, the obtained results are experimentally validated in a network of electronic Hindmarsh-Rose neurons. (C) 2019, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.

关键词： network synchronization dynamic coupling Hindmarsh-Rose neuronal model

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Dynamic coupling enhances network synchronization ⁎

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IFAC-PapersOnLine 2019年第16期52卷 610-615页

作者： W. de Jonge J. Pena Ramirez H. Nijmeijer Eindhoven University of Technology Department of Mechanical Engineering P.O. Box 513 5600 MB Eindhoven The Netherlands CICESE. Applied Physics Division. Department of Electronics and Telecommunications Carr. Ensenada-Tijuana 3918 Zona Playitas C.P. 22860 Ensenada B.C. Mexico

关键词： network synchronization dynamic coupling Hindmarsh-Rose neuronal model

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network synchronization for Mobile Device-to-Device Systems

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IEEE TRANSACTIONS ON COMMUNICATIONS 2017年第3期65卷 1193-1206页

作者： Sun, Wanlu Brannstrom, Fredrik Strom, Erik G. Chalmers Univ Technol Dept Signals & Syst SE-41296 Gothenburg Sweden

This paper studies the synchronization problem for mobile cellular device-to-device (D2D) networks. Depending on the number of devices that are in coverage of the base station, the D2D environment can be divided into three categories where the partial-coverage and out-of-coverage are challenging scenarios and thus are the focus of this paper. First, we discuss five main challenges imposed on the synchronization problem in mobile D2D networks. More specifically, there are different challenges in the two coverage scenarios, since they do not have exactly the same synchronization objectives. Second, we propose a low-complexity Adaptive distRibuted network synchronization (ARES) algorithm to address the five challenges. The design principles and the theories behind the ARES scheme are also analyzed in detail. Finally, we provide comprehensive simulations to evaluate different synchronization schemes, where the proposed ARES mechanism shows very promising performance.

关键词： Device-to-device communication network synchronization consensus algorithms

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A Scalable Algorithm for network Localization and synchronization

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IEEE INTERNET OF THINGS JOURNAL 2018年第6期5卷 4714-4727页

作者： Meyer, Florian Etzlinger, Bernhard Liu, Zhenyu Hlawatsch, Franz Win, Moe Z. MIT Lab Informat & Decis Syst 77 Massachusetts Ave Cambridge MA 02139 USA Johannes Kepler Univ Linz Inst Commun Engn & RF Syst A-4040 Linz Austria TU Wien Inst Telecommun A-1040 Vienna Austria Brno Univ Technol Brno 60190 Czech Republic

The Internet of Things (IoT) will seamlessly integrate a large number of densely deployed heterogeneous devices and will enable new location-aware services. However, fine-grained localization of IoT devices is challenging as their computation and communication resources are typically limited and different devices may have different qualities of internal clocks and different mobility patterns. To address these challenges, we propose a cooperative, scalable, and time-recursive algorithm for network localization and synchronization (NLS). Our algorithm is based on time measurements and supports heterogeneous devices with limited computation and communication resources, time-varying clock and location parameters, arbitrary state-evolution models, and time-varying network connectivity. These attributes make the proposed algorithm attractive for IoT-related applications. The algorithm is furthermore able to incorporate measurements from additional sensors for positioning, navigation, and timing such as receivers for global navigation satellite systems. Based on a factor graph representation of the underlying spatiotemporal Bayesian sequential estimation problem, the algorithm uses belief propagation (BP) for an efficient marginalization of the joint posterior distribution. To account for the nonlinear measurement model and nonlinear state-evolution models while keeping the communication and computation requirements low, we develop an efficient second-order implementation of the BP rules by means of the recently introduced sigma point belief propagation technique. Simulation results demonstrate the high synchronization and localization accuracy as well as the low computational complexity of the proposed algorithm. In particular, in sufficiently dense networks, the proposed algorithm outperforms the state-of-the-art BP-based algorithm for NLS in terms of both estimation accuracy and computational complexity.

关键词： Belief propagation (BP) cooperative localization cooperative synchronization distributed estimation factor graph Internet of Things (IoT) message passing network localization network synchronization

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Avatars' Skeleton Connection and Movement Data network synchronization 7

Avatars' Skeleton Connection and Movement Data Network Synch...

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7th International Conference on Virtual Reality and Visualization (ICVRV)

作者： Qi, Qi Zhao, Sanyuan Wang, Shuai Lai, Linjing Lei, Zhengchao Song, Hongmei Beijing Inst Technol Sch Comp Sci & Technol Beijing Key Lab Intelligent Informat Technol Beijing 100081 Peoples R China

ISBN: (纸本)9781538626368

As the rapid development of computer graphics and network, virtual reality technology begin to penetrate the field of social network. Due to the limited function of single virtual reality device, the combination of different devices is a feasible approach to immerse people in the real world. In this paper, we novelly combine Kinect v1 with Leap Motion sensor for whole-body gesture capturing and overcome two difficulties, avatars' skeleton connection and movement data synchronization. The experiment approves that our method performs well. It could be a meaningful contribution to the future multi-player interactive virtual social platform.

关键词： Skeleton Connection network synchronization Kinect Leap Motion

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Distributed network synchronization

Distributed Network Synchronization

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IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS)

作者： Reichman, Arie Priesler, Miri Wayer, Shahaf Ruppin Acad Ctr Sch Engn Emek Hefer Israel Ariel Univ Ariel Israel

ISBN: (纸本)9781479974733

This paper presents a non centralized, non hierarchical and distributed synchronization process for wireless mesh networks. Each node has a time base that relative to an universal clock has an offset and a clock frequency difference and the purpose of the synchronization is to correct the offset and the frequency so all the nodes will have almost the same time base. The synchronization process is based on periodically transmission of messages with timing information by the all the nodes. The timing messages can be retransmitted to other nodes. Each node is correcting his time base according to the received messages. The synchronization process has an acquisition phase when the clocks of the nodes have large variations and when the variations are reduced below a certain threshold the synchronization process switches to the tracking phase. In the tracking phase the variations among nodes are farther reduced and the changes in clock parameters are followed. synchronization algorithms and simulation results are presented.

关键词： network synchronization wireless mesh networks distributed protocols

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