2011 Ninth Annual Communication Networks and Services Research Conference最新文献_第4页

Towards QoS Assurance with Revenue Maximization of LTE Uplink Scheduling 基于收益最大化的LTE上行调度QoS保证

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.37

Rukhsana Ruby, Victor C. M. Leung

引用次数: 13

An Adaptive Hybrid Architecture for Intrusion Detection Based on Fuzzy Clustering and RBF Neural Networks 基于模糊聚类和RBF神经网络的自适应混合入侵检测体系结构

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.26

Ahmad Ghadiri, Nasser Ghadiri

引用次数: 17

RRB-SIMD: RTP Rate-Based SIMD Protocol for Media Streaming Applications over the Internet RRB-SIMD:基于RTP速率的SIMD协议，用于互联网上的流媒体应用

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.19

G. Lusilao-Zodi, M. Dlodlo, G. D. Jager, K. Ferguson

{"title":"RRB-SIMD: RTP Rate-Based SIMD Protocol for Media Streaming Applications over the Internet","authors":"G. Lusilao-Zodi, M. Dlodlo, G. D. Jager, K. Ferguson","doi":"10.1109/CNSR.2011.19","DOIUrl":"https://doi.org/10.1109/CNSR.2011.19","url":null,"abstract":"Congestion control is vital in the streaming of a video sequence or clip, as network traffic varies unpredictably requiring constant adjustment of the transmission rate. Standard TCP-Friendly Rate Control (TFRC) wastes bandwidth and may react to congestion only when packet loss has already occurred. This paper presents a unicast transport protocol named RRB-SIMD for video streaming over the Internet, that provides better quality of service (QoS) support than the TCP-friendly rate control. RRB-SIMD operates on top of Real-time Transport Protocol (RTP) and takes advantage of Real-time Transport Control Protocol (RTCP) reports to multiplicatively decrease the transmission rate in response to congestion and quadratically increase the transmission rate in the absence of congestion. Since packet loss is not a reliable indicator of congestion, RB-SIMD uses in addition the cumulative jitter as a control criterion to detect incipient congestion prior to loss of a packet. The cumulative jitter scheme is reinforced with a delay factor that measures on a per round basis the buffer occupancy at the bottleneck path between the sender and the receiver. This is done to reduce the risk of unnecessary decrease of the transmission rate every time that incipient congestion is reported through the cumulative jitter scheme. The performance evaluation results using both network-related metrics and video quality measurement shows that RRB-SIMD exhibits a better performance with respect to lost frames ratio, delay and cumulative jitter, and hence an improved quality display than the standard TFRC.","PeriodicalId":272359,"journal":{"name":"2011 Ninth Annual Communication Networks and Services Research Conference","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126052663","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

Intelligent Power Management for QoS-Aware Multimedia in Cognitive Mesh Networks Using Reinforcement Learning 基于强化学习的认知网状网络中qos感知多媒体智能电源管理

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.50

A. Alsarhan, A. Agarwal

{"title":"Intelligent Power Management for QoS-Aware Multimedia in Cognitive Mesh Networks Using Reinforcement Learning","authors":"A. Alsarhan, A. Agarwal","doi":"10.1109/CNSR.2011.50","DOIUrl":"https://doi.org/10.1109/CNSR.2011.50","url":null,"abstract":"In cognitive multimedia mesh networks (CMMNs), unlicensed users (secondary users, SUs) can share the spectrum with licensed users (primary users, PUs) on a non-interfering basis. The main challenge in CMMN is how to implement an efficient optimal control policy that can allocate spectrum and transmission powers for the SUs efficiently and how to adapt these resources to the changing network conditions. The power management scheme should control the SUs powers in such a way that their data communication rate is not affected. SUs power cannot be dropped indefinitely but it should be bounded such that the quality of service (QoS) for the SUs is still supported. Our objective is to serve the maximum number of users and support their QoS while protecting the PUs' rights of using the spectrum exclusively. Due to the direct relationship between the data rate and the quality of the communication channel, we propose a new spectrum allocation scheme that exploits the physical properties of the channel to achieve better performance. In addition to consider QoS for users, our scheme uses several heuristics for selecting channels that meet users requirements. These heuristics include channel error rates, PUs activities, channel capacity and channel adaptation time. Performance evaluation of the proposed scheme shows that the scheme is able to support additional SUs traffic while still ensuring PUs QoS.","PeriodicalId":272359,"journal":{"name":"2011 Ninth Annual Communication Networks and Services Research Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131099425","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

Measurement Study on PPLive Based on Channel Popularity 基于信道人气的PPLive测量研究

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.12

Ruixuan Li, Guoqiang Gao, Weijun Xiao, Zhiyong Xu

{"title":"Measurement Study on PPLive Based on Channel Popularity","authors":"Ruixuan Li, Guoqiang Gao, Weijun Xiao, Zhiyong Xu","doi":"10.1109/CNSR.2011.12","DOIUrl":"https://doi.org/10.1109/CNSR.2011.12","url":null,"abstract":"In recent years, Peer-to-Peer (P2P) streaming systems experienced tremendous growth and became one of the largest bandwidth consumer on Internet. PPLive, one of the most popular applications in this category, is serving millions of registered users with hundreds of Live TV channels and millions of other video clips. Compared to the standard file sharing systems, the streaming service shows unique characteristics with more stringent time constraints and requires much higher network bandwidth. It is extremely important to evaluate and analyze existing applications, investigate the merits and weaknesses in these systems for the future development. In this paper, we conduct a comprehensive measurement study on PPLive. Both Live TV and Video-on-Demand (VoD) channels are evaluated. We record run-time network traffic on the client side, compare and analyze the characteristics of these channels based on their popularity. For both categories, we perceive that, in general, PPLive delivers satisfactory performance if enough concurrent peers are present in a particular channel. We also observe that VoD channels perform better than their counterparts in Live TV category in terms of data transmission, workload distribution, and signal traffic overhead. However, Live TV channels show better peer coordinations than VoD channels. Overall, our results reveal that although PPLive can provide excellent viewing experiences for popular channels, there are still challenges to fully support unpopular channels. New designs and algorithms are in urgent need, especially for unpopular Live TV channels.","PeriodicalId":272359,"journal":{"name":"2011 Ninth Annual Communication Networks and Services Research Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129585092","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

The Good, the Bad, the IPv6 好的，坏的，IPv6

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.20

M. Dunlop, S. Groat, R. Marchany, J. Tront

引用次数: 13

Gateway Placement in Backbone Wireless Mesh Networks Using Directional Antennas 使用定向天线的骨干无线网状网络中的网关配置

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.33

Ziping Hu, P. Verma

引用次数: 6

Performance Evaluation and Enhancements of 42.7 Gb/s DWDM Transmission System Using Different Modulation Formats 不同调制格式下42.7 Gb/s DWDM传输系统的性能评估与改进

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.35

S. Ghoniemy, K. George, L. MacEachern

{"title":"Performance Evaluation and Enhancements of 42.7 Gb/s DWDM Transmission System Using Different Modulation Formats","authors":"S. Ghoniemy, K. George, L. MacEachern","doi":"10.1109/CNSR.2011.35","DOIUrl":"https://doi.org/10.1109/CNSR.2011.35","url":null,"abstract":"Modeling and design, simulation, characterization and performance evaluation of high data rate and high capacity long-haul DWMD light wave systems are presented. As well, a methodology for finding the optimum modulation format that can effectively enhance the system performance without major changes in the existing infrastructure are presented. An exemplary 42.7 Gb/s, 80 Km×16 spans DWDM light wave system including transmitter, different fiber types (SSMF, LEAF, and TW-RS), amplifiers, and receiver is designed. Suitable model implementations for device and systems simulations in the time domain using OPTSIM CAD simulator are presented. The performance of the exemplary system is examined using four different modulation formats: NRZ-OOK, optical duo binary, differential binary phase shift keying (NRZ-DBPSK), and differential quadrature phase shift keying (RZ-DQPSK). Simulation results show that the overall system's performance using a combination RZ-DQPSK with the LEAF based on reduced channel spacing (50 GHz with spectral efficiency of 0.8 bit/s/Hz) provides a remarkable improvement (approximately 50% in the transmission distance ) over implementations based on other fiber and modulation format combinations. Model verification and validation performed by comparison of simulated results to measured results demonstrated the utility of the proposed design methodology","PeriodicalId":272359,"journal":{"name":"2011 Ninth Annual Communication Networks and Services Research Conference","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131547766","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

Characterization of the IntelRate Controller for High-Speed Networks 高速网络中IntelRate控制器的特性研究

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.18

Jungang Liu, O. Yang

引用次数: 6

A Peer-to-Peer Model for XML Publish/Subscribe Services XML发布/订阅服务的对等模型

2011 Ninth Annual Communication Networks and Services Research Conference Pub Date : 2011-05-02 DOI: 10.1109/CNSR.2011.13

Yang Cao, Chung-Horng Lung, S. Majumdar

引用次数: 6