MILCOM 2008 - 2008 IEEE Military Communications Conference最新文献_第5页

Time-based sampling strategies for multi-channel wireless traffic characterization in tactical cognitive networks 战术认知网络中多信道无线业务表征的基于时间的采样策略

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753338

B. R. Tamma, B. S. Manoj, R. Rao

{"title":"Time-based sampling strategies for multi-channel wireless traffic characterization in tactical cognitive networks","authors":"B. R. Tamma, B. S. Manoj, R. Rao","doi":"10.1109/MILCOM.2008.4753338","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753338","url":null,"abstract":"Accurate characterization of wireless network traffic has many applications in military communication networks. However, the network traffic characterization is a challenging task in multi-channel wireless networks. Due to the presence of multiple channels, the existing count-based sampling methods demand continuous capture on each channel for selecting the desired packets of interest. Continuous traffic capture makes the cost of monitoring infrastructure very expensive and hence count-based sampling methods are not scalable. However, the time-based sampling methods which were considered inaccurate in wired network characterization, seem to offer a cost-effective and scalable solution. The contributions of this paper include the following: (i) proposal of a new metric, relative proportional inconsistency (RPI) for measuring the accuracy of sampling schemes, (ii) comparison of various time-based sampling strategies using RPI metric, (iii) studying the effect of sampling parameters on the accuracy of sampling, and (iv) preliminary results on characterization of wireless network data traffic from residential and campus environments.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126317097","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: 5

Hybrid multicast patching approach for video services 视频业务的混合多播修补方法

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753366

Can Li, Sungkown Park, S. Bahk

{"title":"Hybrid multicast patching approach for video services","authors":"Can Li, Sungkown Park, S. Bahk","doi":"10.1109/MILCOM.2008.4753366","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753366","url":null,"abstract":"With the advancement of broadband networking technology, many clients are enabled to enjoy various video on demand (VoD) services. To provide VoD services to a number of clients, the network needs to consider various factors together; they are each viewerpsilas waiting time, buffer requirement at the client, channel management for video delivery, and complexity for video segmentation. Among the currently available VoD approaches, the polyharmonic broadcasting approach and the staircase multicasting approach show the best performance in terms of viewerpsilas waiting time and buffer requirement, respectively. However, these approaches need to divide a video into too many segments, and require many channels at a time. To overcome these limitations, we propose polyharmonic-staircase-staggered (PSS) multicasting approach which combines the Polyharmonic scheme with the staircase scheme. It is simple and bandwidth efficient. The numerical results demonstrate that each viewerpsilas waiting time in our approach is comparable to that in the polyharmonic approach, at the cost of a slight increase in bandwidth requirement, and its buffer requirement is about 60% less than that in the staircase approach by simply adjusting the front part of video segmentation. More importantly, our approach shows the best performance in number of channels to be managed and used simultaneously, which is a critical factor in real deployment.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126373760","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: 5

Impact of overlapped transmission on the performance of TCP in multihop ad hoc networks 多跳自组织网络中重叠传输对TCP性能的影响

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753410

S. Boppana, J. Shea

引用次数: 4

Harmonised resilience, security and mobility capability for IP IP的协调弹性、安全性和移动性能力

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753321

R. Atkinson, S. Bhatti, S. Hailes

引用次数: 15

Optimal sensor deployment for distributed detection in the presence of channel fading 信道衰落情况下分布式检测的最优传感器部署

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753637

S. Jayaweera, T. Wimalajeewa

{"title":"Optimal sensor deployment for distributed detection in the presence of channel fading","authors":"S. Jayaweera, T. Wimalajeewa","doi":"10.1109/MILCOM.2008.4753637","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753637","url":null,"abstract":"The problem of optimal (fixed) wireless sensor network (WSN) design for distributed detection of a randomly-located target is addressed. This is an extension of the previous work reported in [1] where the problem was addressed for a one-dimensional (1D) network assuming wireless channels between sensors and the fusion center undergo only the path-loss attenuation. In this paper we consider both one and two-dimensional (2-D), equi-spaced WSN models in the presence of short-term fading in addition to path-loss attenuation. The target is assumed to be exponentially distributed with a known mean. The optimal inter-node spacing is derived by optimizing the Bhattacharya bound on the error probability of the Bayesian detector. In the presence of fading, it is shown that the optimal node placement depends on the channel SNR, path loss exponent and the mean target location. However, we show that for low channel SNRpsilas, the optimal spacing obtained for no fading case, which is only a function of path-loss exponent and the mean target location, is a good approximation to that with fading. In particular, it is not a function of the channel SNR. It is shown that in many cases the deviation from optimal inter-node spacing can cost significant performance penalty. From numerical results, it is verified that the optimal inter-node spacing obtained based on the Bhattacharya bound holds true if the performance measure were to be the exact fusion error probability.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128126005","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: 5

Accuracy analysis of data aggregation for network monitoring 网络监控数据聚合的准确性分析

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753388

N. Sofra, T. He, P. Zerfos, B. J. Ko, K. Lee, K. Leung

引用次数: 6

A defense technique against misbehavior in VANETs based on threshold authentication 一种基于阈值认证的vanet异常行为防御技术

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753658

Jinyuan Sun, Yuguang Fang

引用次数: 21

Ultrawide bandwidth serial-search multi-dwell acquisition-Part II: System considerations 超宽带串行搜索多驻留采集-第二部分:系统考虑

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753554

W. Suwansantisuk, M. Win

引用次数: 3

Network synchronization for distributed MANET 分布式MANET的网络同步

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753419

S. Mo, J. Hsu, J. Gu, Mingchuan Luo, R. Ghanadan

{"title":"Network synchronization for distributed MANET","authors":"S. Mo, J. Hsu, J. Gu, Mingchuan Luo, R. Ghanadan","doi":"10.1109/MILCOM.2008.4753419","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753419","url":null,"abstract":"Mobile ad-hoc networks (MANET) are often characterized with rapidly changing topologies, presenting a constant challenge for time synchronization. This challenge holds especially true in tactical edge ground military networks, where topological instabilities are enhanced by hostile transmission environments. In the absence of GPS, time synchronization within the context of a tactical environment requires resilience and ease of deployment. Hardware requirements must be carefully controlled, while relying on distributed coordination techniques to avoid single points of failure. Current tactical ground networks are often deployed without high accuracy oscillators, but still require time synchronization on the order of 1us. Our work demonstrates a distributed synchronization approach with a resource efficient solution that handles these requirements. We introduce cross-layer ad-hoc network synchronization (CLANS), a low overhead time synchronization protocol designed for MANETs and enables coarse synchronization without relying on GPS data. CLANS leverages routing information, channel access schemes, and distributed scheduling protocols that typically exist in a MANET. This provides a resilient, distributed time synchronization solution with relaxed hardware requirements. Simulation results show that CLANS can achieve network synchronization within 1 us in lossy multi-hop networks with the presence of packet loss and measurement noise.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130473552","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: 10

Communication range extension for the Intelligent Munitions System 智能弹药系统的通信范围扩展

MILCOM 2008 - 2008 IEEE Military Communications Conference Pub Date : 2008-11-01 DOI: 10.1109/MILCOM.2008.4753352

R. Sonalkar, J. Horn

{"title":"Communication range extension for the Intelligent Munitions System","authors":"R. Sonalkar, J. Horn","doi":"10.1109/MILCOM.2008.4753352","DOIUrl":"https://doi.org/10.1109/MILCOM.2008.4753352","url":null,"abstract":"Future variants of unattended Networked Munitions and Ground Sensors will be remotely deployed tens of kilometers forward of the control point. Systems like the next generation of the Intelligent Munitions System (IMS) will provide a means to dominate an area on the battlefield via remote control and prevent the passage of enemy forces while allowing for the safe passage of friendly forces by providing manual control of the armed and sensing states of the deployed IMS components. Given that the components need to be relatively small for low probability of detectability (LPD) and for remote delivery, the antennas for the communications systems are expected to be very close to the ground. Recognizing that limited Size Weight and Power (SWaP) and the proximity of the antennas to the ground severely limit the communications range, we examine alternatives for increasing the range and the challenges associated with each alternative. The alternatives can be partitioned into two broad categories; physical layer improvements and systems architecture. Systems architecture approaches consist of incorporating relays between the transmitter and receiver. In general, physical layer approaches can be categorized as HW and/or SW improvements. Some HW-based approaches are currently under consideration and being analyzed within the IMS. The primary issue in the system architecture approach would be to identify either existing resources of opportunity that could be used, such as satellite or Unmanned Aerial Systems (UASs), or to use specially designed relays in netted-sensors architecture. We examine these alternative architectures and recommend UAS relays as the most feasible range extension approach, albeit with its own challenges.","PeriodicalId":434891,"journal":{"name":"MILCOM 2008 - 2008 IEEE Military Communications Conference","volume":"400 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134214200","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: 1