International Latin American Networking Conference最新文献_第3页

Performance evaluation of opportunistic routing protocols: a framework-based approach using OMNeT++ 机会路由协议的性能评估:使用omnet++的基于框架的方法

International Latin American Networking Conference Pub Date : 2012-10-04 DOI: 10.1145/2382016.2382022

Zhongliang Zhao, Björn Mosler, T. Braun

{"title":"Performance evaluation of opportunistic routing protocols: a framework-based approach using OMNeT++","authors":"Zhongliang Zhao, Björn Mosler, T. Braun","doi":"10.1145/2382016.2382022","DOIUrl":"https://doi.org/10.1145/2382016.2382022","url":null,"abstract":"Opportunistic routing may achieve significant performance gain under lossy wireless links or in scenarios of mobile ad hoc networks, where end-to-end connectivity is not always available. Instead of deterministically choosing one node to forward a packet to, the network layer selects a set of candidate nodes and then only one of them will be chosen dynamically as the actual forwarder based on the instantaneous channel conditions and node availability at the moment of transmission. Many protocols have been proposed and most of them are studied in specific simulation environments or real-world testbeds, and no systematic analysis has been given about the integrative performance of different protocols.\u0000 In our previous work, we have shown that different opportunistic routing protocols share many common functions and these general functions could be abstracted and decoupled into a framework of functional components, which might facilitate the development and evaluation of opportunistic routing protocols. In this paper, we extend our work and present initial evaluation results of the ExOR and MORE protocols using our simulation framework in OMNeT++. Our simulation results justify scenarios where opportunistic routing may perform better than traditional MANET routing.","PeriodicalId":415618,"journal":{"name":"International Latin American Networking Conference","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930043","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: 19

IXP traffic: a macroscopic view IXP流量:宏观视图

International Latin American Networking Conference Pub Date : 2012-10-04 DOI: 10.1145/2382016.2382018

J. Restrepo, R. Stanojevic

引用次数: 25

Challenging the feasibility of authentication mechanisms for P2P live streaming 挑战P2P直播认证机制的可行性

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078227

Rafael V. Coelho, Jonata T. Pastro, Rodolfo Stoffel Antunes, M. Barcellos, Ingrid Jansch-Pôrto, L. Gaspary

{"title":"Challenging the feasibility of authentication mechanisms for P2P live streaming","authors":"Rafael V. Coelho, Jonata T. Pastro, Rodolfo Stoffel Antunes, M. Barcellos, Ingrid Jansch-Pôrto, L. Gaspary","doi":"10.1145/2078216.2078227","DOIUrl":"https://doi.org/10.1145/2078216.2078227","url":null,"abstract":"Peer-to-peer live streaming applications are becoming increasingly popular, and already reach millions of users worldwide. There are, however, many aspects in which these applications must evolve, among which video quality and security deserve particular attention. While the former is about to become a reality given recent advances in codecs and link bandwidth, the latter still presents great challenges. The decentralized nature of P2P live streaming systems makes them vulnerable to attacks, among which pollution is arguably the most harmful. Multimedia stream authentication allows the detection of polluted content and can help identifying malicious users, but its costs may be prohibitive. This paper presents an analytical evaluation of recent authentication mechanisms in light of their application in P2P live streaming. Its key contribution is to compare, unlike previous work, overheads and security of various signature amortization and light digital signature mechanisms for P2P live streaming of standard and high definition video. We demonstrate, contrary to previous work, that current authentication mechanisms do not scale in therms of quality, and are feasible in current hardware only with a favorable set of parameters. Our results justify the investigation of more efficient and adaptable approaches to the next generation of P2P streaming with secure, high definition video.","PeriodicalId":415618,"journal":{"name":"International Latin American Networking Conference","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128469391","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: 4

Design of a routing protocol using remaining energy and link quality indicator (REL) 基于剩余能量和链路质量指示器的路由协议设计

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078223

Kássio Machado, D. Rosário, E. Nakamura, A. Abelém, E. Cerqueira

引用次数: 6

Quality of experience: a buzzword or the key to successful multimedia delivery across networks? 体验质量:一个流行词还是跨网络多媒体传输成功的关键?

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078220

U. Reiter

引用次数: 4

U2-Route: a hardware tool to test internet quality of service proposals U2-Route:一个测试互联网服务质量建议的硬件工具

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078226

Jhon J. Padilla Aguilar, Luis Santamaría, C. Acevedo, L. Becerra

引用次数: 0

QoE-based packet dropper controllers for multimedia streaming in WiMAX networks WiMAX网络中多媒体流的基于qos的丢包控制器

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078219

Allan B. Costa, Carlos Quadros, Adalberto Melo, E. Cerqueira, A. Abelém, A. Neto, E. Monteiro, D. Rodrigues

{"title":"QoE-based packet dropper controllers for multimedia streaming in WiMAX networks","authors":"Allan B. Costa, Carlos Quadros, Adalberto Melo, E. Cerqueira, A. Abelém, A. Neto, E. Monteiro, D. Rodrigues","doi":"10.1145/2078216.2078219","DOIUrl":"https://doi.org/10.1145/2078216.2078219","url":null,"abstract":"The proliferation of broadband wireless facilities, together with the demand for multimedia applications, are creating a wireless multimedia era. In this scenario, the key requirement is the delivery of multimedia content with Quality of Service (QoS) and Quality of Experience (QoE) support for thousands of users (and access networks) in broadband in the wireless systems of the next generation.. This paper sets out new QoE-aware packet controller mechanisms to keep video streaming applications at an acceptable level of quality in Worldwide Interoperability for Microwave Access (WiMAX) networks. In periods of congestion, intelligent packet dropper mechanisms for IEEE 802.16 systems are triggered to drop packets in accordance with their impact on user perception, intra-frame dependence, Group of Pictures (GoP) and available wireless resources in service classes. The simulation results show that the proposed solutions reduce the impact of multimedia flows on the user's experience and optimize wireless network resources in periods of congestion.. The benefits of the proposed schemes were evaluted in a simulated WiMAX QoS/QoE environment, by using the following well-known QoE metrics: Peak Signal-to-Noise Ratio (PSNR), Video Quality Metric (VQM), Structural Similarity Index (SSIM) and Mean Option Score (MOS).","PeriodicalId":415618,"journal":{"name":"International Latin American Networking Conference","volume":"29 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116564424","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: 7

Combining the effects of frame rate, bit rate, display size and video content in a parametric video quality model 结合帧率、比特率、显示尺寸和视频内容在参数化视频质量模型中的影响

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078218

J. Joskowicz, J. López-Ardao

引用次数: 31

A delay based routing protocol with support for common services 支持通用服务的基于延迟的路由协议

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078228

Eric Gamess, Paul Marrero, Daniel Gámez

引用次数: 3

Recommendation system based on user profile extracted from an IMS network with emphasis on social network and digital TV 基于从IMS网络中提取的用户档案的推荐系统，重点关注社交网络和数字电视

International Latin American Networking Conference Pub Date : 2011-10-12 DOI: 10.1145/2078216.2078224

R. L. Rosa, D. Z. Rodríguez, Vicente Angelo de Sousa Junior, G. Bressan

引用次数: 4