Digital Communications and Networks最新文献_第9页

RT-Link: A Time-Synchronized Link Protocol for Energy- Constrained Multi-hop Wireless Networks RT-Link:能量受限多跳无线网络的时间同步链路协议

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288496

Anthony G. Rowe, R. Mangharam, R. Rajkumar

{"title":"RT-Link: A Time-Synchronized Link Protocol for Energy- Constrained Multi-hop Wireless Networks","authors":"Anthony G. Rowe, R. Mangharam, R. Rajkumar","doi":"10.1109/SAHCN.2006.288496","DOIUrl":"https://doi.org/10.1109/SAHCN.2006.288496","url":null,"abstract":"We propose RT-link, a time-synchronized link protocol for real-time wireless communication in industrial control, surveillance and inventory tracking. RT-link provides predictable lifetime for battery-operated embedded nodes, bounded end-to-end delay across multiple hops, and collision-free operation. We investigate the use of hardware-based time-synchronization for infrastructure nodes by using an AM carrier-current radio for indoors and atomic clock receivers for outdoors. Mobile nodes are synchronized via in-band software synchronization within the same framework. We identify three key observations in the design and deployment of RT-link: (a) hardware-based global-time synchronization is a robust and scalable option to in-band software-based techniques, (b) achieving global time-synchronization is both economical and convenient for indoor and outdoor deployments, (c) RT-link achieves a practical lifetime of over 2 years. Through analysis and simulation, we show that RT-link outperforms energy-efficient link protocols such as B-MAC in terms of node lifetime and end-to-end latency. The protocol supports flexible services such as on-demand end-to-end rate control and logical topology control. We implemented RT-link on the CMU FireFly sensor platform and have integrated it within the nano-RK real-time sensor OS. A 42-node network with sub-20 mus synchronization accuracy has been deployed for 3 weeks in the NIOSH Mining Research Laboratory and within two 5-story campus buildings","PeriodicalId":58925,"journal":{"name":"Digital Communications and Networks","volume":"57 1","pages":"402-411"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75526964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 157

Emulation Architecture Implementation and Design 仿真体系结构实现与设计

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288537

A. Giovanardi, G. Mazzini

引用次数: 5

Distributed Fair Transmit Power Adjustment for Vehicular Ad Hoc Networks 车载自组网的分布式公平发射功率调整

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288504

M. Torrent-Moreno, P. Santi, H. Hartenstein

{"title":"Distributed Fair Transmit Power Adjustment for Vehicular Ad Hoc Networks","authors":"M. Torrent-Moreno, P. Santi, H. Hartenstein","doi":"10.1109/SAHCN.2006.288504","DOIUrl":"https://doi.org/10.1109/SAHCN.2006.288504","url":null,"abstract":"Improving the safety of drivers and passengers by wirelessly exchanging information between vehicles represents a major driving force for the design of vehicular ad hoc networks. In a heavy loaded 802.11-based network, however, safety-related packets might collide frequently and cannot be decoded by a receiver, thus they might not be effective in increasing the safety level on the roads. In this paper, we propose to use transmit power control in order to reduce packet collisions, while taking into account the major design goal of vehicular ad hoc networks, i.e. increasing safety. While previous work has addressed the issue of power control primarily for optimizing network capacity and/or connectivity, the optimization criterion for improving safety has to be built upon the concept of fairness: a higher transmit power of a sender should not be selected at the expense of preventing other vehicles to send/receive their required amount of safety information. In this paper, we propose a fully distributed and localized algorithm called D-FPAV (distributed fair power adjustment for vehicular networks) for adaptive transmit power adjustment which is formally proven to achieve max-min fairness. Furthermore, we investigate the effectiveness and robustness of D-FPAV through extensive simulations based on a realistic highway scenario and different radio propagation models","PeriodicalId":58925,"journal":{"name":"Digital Communications and Networks","volume":"24 1","pages":"479-488"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88206916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 207

Scalable Routing in Sensor Actuator Networks with Churn 具有扰动的传感器执行器网络中的可扩展路由

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288406

T. Fuhrmann

引用次数: 6

Novel Sensor MAC Protocol Applied to Cayley and Manhattan Street Networks with CrossBow MICA2 基于十字弓MICA2的新型传感器MAC协议在Cayley和Manhattan Street网络中的应用

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288522

E. Noel, K. Tang

引用次数: 6

A Probabilistic Energy-Efficient Routing (PEER) Scheme for Ad-hoc Sensor Networks 一种面向自组织传感器网络的概率节能路由(PEER)方案

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288590

Kai Chen, Yang Qin, Fan Jiang, Zongyao Tang

{"title":"A Probabilistic Energy-Efficient Routing (PEER) Scheme for Ad-hoc Sensor Networks","authors":"Kai Chen, Yang Qin, Fan Jiang, Zongyao Tang","doi":"10.1109/SAHCN.2006.288590","DOIUrl":"https://doi.org/10.1109/SAHCN.2006.288590","url":null,"abstract":"Wireless ad-hoc sensor networks consist of small nodes with sensing, computing, and communicating capabilities. Energy deficiency is a key problem of these kinds of networks. Many routing, power management, and data dissemination protocols have been specifically designed for them where energy awareness is a chief design issue. This paper proposes a new probabilistic agent-based energy efficient routing strategy (PEER). In contrast to the earlier work that focus on energy-aware routing, PEER takes into account both total cost and individual residual energy of the whole path statistically (path-based) when selecting the next hop, i.e. each intermediate node chooses its next hop node based on the statistical path information from that node to the sink. We show through analysis and simulations that PEER can prolong the network survivability, shorten the average packet delay, and hence outperform all the existing routing schemes. Moreover, we conjecture that the coefficient rho in PEER may be intelligently adjusted to fit the situation of the volatile networks, thus we make further investigation into it and achieve the intending results","PeriodicalId":58925,"journal":{"name":"Digital Communications and Networks","volume":"4 1","pages":"964-970"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81251399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Throughput-Oriented MAC for Mobile Networks with Variable Packet Sizes 面向吞吐量的可变分组大小移动网络MAC

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288498

Fan Wang, O. Younis, M. Krunz

{"title":"Throughput-Oriented MAC for Mobile Networks with Variable Packet Sizes","authors":"Fan Wang, O. Younis, M. Krunz","doi":"10.1109/SAHCN.2006.288498","DOIUrl":"https://doi.org/10.1109/SAHCN.2006.288498","url":null,"abstract":"Improving the network throughput is a primary objective in mobile ad hoc networks (MANETs), which is motivated by the over-conservative nature of the 802.11 standard. Transmission power control (TPC) was proposed for improving spatial reuse and reducing energy consumption in MANETs. Previous TPC protocols either incur extra hardware cost (e.g., require multiple transceivers) or do not fully exploit the potential of power control. In this work, we propose distributed, single-channel MAC protocols for MANETs that exploit TPC and account for different packet sizes in the system to further maximize spatial reuse. We model channel contention in the network as a non-cooperative game. Multiple potential transmitters are first involved in an admission phase which enables terminals to compute the transmission powers that achieve a Nash equilibrium (NE) for a given utility function. Subsequently, successful contenders in the same neighborhood can simultaneously proceed with their transmissions. Simulation results show that our protocols significantly improve the network throughput (in terms of transmitted bits/second or the number of admitted contenders) over previously proposed schemes. Our results also indicate that these gains do not require additional energy cost","PeriodicalId":58925,"journal":{"name":"Digital Communications and Networks","volume":"11 1","pages":"421-430"},"PeriodicalIF":0.0,"publicationDate":"2006-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76161726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Application of Video Sensor Networks in Traffic Surveillance 视频传感器网络在交通监控中的应用

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288582

Fuqiang Liu, K. Zhou, Donglei Wang

引用次数: 7

Deployment Strategies for Differentiated Detection in Wireless Sensor Networks 无线传感器网络中差分检测的部署策略

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288436

Jingbin Zhang, Ting Yan, S. Son

引用次数: 59

A Communication-Theoretic Approach to Ad Hoc Wireless Networking 一种自组织无线网络的通信理论方法

Digital Communications and Networks Pub Date : 2006-01-01 DOI: 10.1109/SAHCN.2006.288536

O. Tonguz, G. Ferrari

引用次数: 6