2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)最新文献_第9页

Rising edge detection used as TOA estimator for mode S signals with multipath propagation 将上升沿检测作为多径S型信号的TOA估计

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115591

Stephan Bernhart, E. Leitgeb, G. Hofbauer, Ulrich Feichter

引用次数: 1

Wearable and autonomous computing for future smart cities: Open challenges 面向未来智慧城市的可穿戴和自主计算:开放挑战

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115596

Domenico Balsamo, G. Merrett, B. Zaghari, Yang Wei, S. Ramchurn, Sebastian Stein, A. Weddell, S. Beeby

引用次数: 19

Virtual data planes for easy creation and operation of end-to-end virtual networks 虚拟数据平面，方便端到端虚拟网络的创建和操作

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115595

N. Oguchi, M. Sekiya

引用次数: 1

Combining IOT, open data and messaging for prevention of MCI/frailty 结合物联网、开放数据和信息传递，预防MCI/脆弱性

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115515

N. D. Blas, P. Paolini, Giulia Plotti

引用次数: 1

Quality-aware network dimensioning for the VoIP service VoIP业务的质量感知网络维度

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115576

J. Klink, T. Uhl

{"title":"Quality-aware network dimensioning for the VoIP service","authors":"J. Klink, T. Uhl","doi":"10.23919/SOFTCOM.2017.8115576","DOIUrl":"https://doi.org/10.23919/SOFTCOM.2017.8115576","url":null,"abstract":"Current networks are multi-service packet-switched environments, very often based on Internet Protocol, where the provision of good quality services is a great challenge. The most popular service, offered by almost every network, is voice transmission. As a real-time service, it places high demands on bandwidth and delay. The paper describes selected network dimensioning problems for the voice over IP service. The authors discuss service quality measures in legacy circuit switched networks and the key performance indicators that influence the quality of telephone service in packet networks. The main contribution of the paper is the proposal of utilizing the blocking probability calculation, which is based on the B-Erlang model used in legacy systems, to estimate the average bandwidth needed to handle a number of sources generating voice traffic in IP networks. Taking into account the average bandwidth required to carry out a one voice conversation, the total network capacity was calculated. The authors made analytical calculations which were confirmed by simulation studies. The problem of using different codecs and their influence on bandwidth consumption and overall service quality experienced by a user were also discussed in the paper. At the end of the paper, the authors defined the directions of further research that should be carried out, i.e. the development of dimensioning methods for networks carrying multimedia services with particular attention paid to video transmission and reliable quality assessment.","PeriodicalId":189860,"journal":{"name":"2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123104849","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

The approach of SWIM data sharing based on multi-dimensional data encryption 基于多维数据加密的SWIM数据共享方法

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115587

Zhi-jun Wu, Liang Liu, Changcan Yan, Jia Xu, Jin Lei

引用次数: 2

Pushing the envelope: Beyond two billion IP routing lookups per second on commodity CPUs 突破极限:在普通cpu上每秒超过20亿个IP路由查找

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115575

Marko Zec, M. Mikuc

{"title":"Pushing the envelope: Beyond two billion IP routing lookups per second on commodity CPUs","authors":"Marko Zec, M. Mikuc","doi":"10.23919/SOFTCOM.2017.8115575","DOIUrl":"https://doi.org/10.23919/SOFTCOM.2017.8115575","url":null,"abstract":"Over the past two decades, implementing routing lookups in dedicated hardware has been accepted as an undisputable gold standard in core Internet routers due to ever increasing performance requirements and unabated global routing table growth. Several recent proposals depart from that line of thinking and suggest that software algorithms running on commodity multi-core CPUs might (again) become well suited for the task. In this article we describe a refined implementation of the DXR routing lookup scheme and subject it to a series of synthetic tests using BGP table snapshots from major Internet exchange points. Our measurements show that the algorithm scales nearly linearly on contemporary multi-core microprocessors, while the achieved peak aggregate throughput of almost 2.5 billion lookups per second presents an over a threefold increase over previously published results. Our experiments show that the aggregate throughput of a software routing lookup algorithm running on a modern commodity microprocessor can outperform a state-of-the-art ASIC chip by more than an order of magnitude, with reasonable expectations that this gap could easily double on the emerging 32- and 36-thread commodity CPUs.","PeriodicalId":189860,"journal":{"name":"2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130838704","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: 8

Real-time localization and visualization of a sound source for virtual reality applications 用于虚拟现实应用的声源的实时定位和可视化

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115577

A. Kose, A. Tepljakov, S. Astapov

引用次数: 4

Electric field radiated by a dipole antenna above a lossy half space: Comparison of plane wave approximation with the modified image theory approach 偶极子天线在有耗半空间上辐射的电场:平面波近似与修正像理论方法的比较

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115529

A. Šušnjara, D. Poljak, V. Doric

{"title":"Electric field radiated by a dipole antenna above a lossy half space: Comparison of plane wave approximation with the modified image theory approach","authors":"A. Šušnjara, D. Poljak, V. Doric","doi":"10.23919/SOFTCOM.2017.8115529","DOIUrl":"https://doi.org/10.23919/SOFTCOM.2017.8115529","url":null,"abstract":"The paper deals with the comparison between the two approaches to account for the presence of a two media configuration when calculating the electric field radiated by the dipole antenna. The first approach features the well-known Fresnel reflection/transmission coefficient approximation which, beside the electric properties of two media, considers also the incidence angle at the interface. On the other hand, the Modified Image Theory (MIT) approach uses the approximation of a normal incidence, thus neglecting the refraction of the wave in the lower medium. The MIT approach thus simplifies the formulation thus providing the analytical solution and the derivation of the time domain computation. In this paper the frequency domain formulation is used. It is based on the Pocklington's integro-differential equation which is solved numerically using the Galerkin Bubnov scheme of Boundary Element Method. The results obtained by both approaches are compared and conclusions are given regarding the limitations and strengths of the MIT approach with respect to the Fresnel coefficients approximation. The comparison undertaken in this work can serve as a benchmark for the analytical solution modeling and time domain modeling.","PeriodicalId":189860,"journal":{"name":"2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131952639","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: 2

Gain analysis of cooperative broadcast in two-dimensional wireless networks 二维无线网络协同广播的增益分析

2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM) Pub Date : 2017-09-01 DOI: 10.23919/SOFTCOM.2017.8115540

Keyvan Gharouni Saffar, M. Khabbazian

{"title":"Gain analysis of cooperative broadcast in two-dimensional wireless networks","authors":"Keyvan Gharouni Saffar, M. Khabbazian","doi":"10.23919/SOFTCOM.2017.8115540","DOIUrl":"https://doi.org/10.23919/SOFTCOM.2017.8115540","url":null,"abstract":"Energy accumulation is an approach to reducing the power consumption of broadcast. In conventional approaches, a node can decode the message if the received power from a single transmission is above a threshold. In contrast, in the cooperative approach based on energy accumulation, a node can decode the message if the sum of the received powers from any set of transmissions exceeds the threshold. An important question is how much energy can be saved in broadcast if energy accumulation is employed. Since employing energy accumulation adds extra design complexities, answering this question can help in deciding whether or not it should be implemented. Previously, it was shown that this saving is limited in linear wireless networks, irrespective of the network size, and the location of the nodes in the network. In this work, however, we show that this saving can increase with the network size in two-dimensional networks. Also, despite the fact that both problems of cooperative and non-cooperative broadcast with minimum energy are NP-hard, we establish a bound on the maximum saving that can be obtained.","PeriodicalId":189860,"journal":{"name":"2017 25th International Conference on Software, Telecommunications and Computer Networks (SoftCOM)","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132898113","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: 0