Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969)最新文献_第4页

On packet loss estimation for virtual private networks services 虚拟专用网业务丢包估计研究

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401618

Dongli Zhang, D. Ionescu

{"title":"On packet loss estimation for virtual private networks services","authors":"Dongli Zhang, D. Ionescu","doi":"10.1109/ICCCN.2004.1401618","DOIUrl":"https://doi.org/10.1109/ICCCN.2004.1401618","url":null,"abstract":"When provisioning the quantitative QoS based VPN services over packet switched networks, parameters such as packet loss, delay and delay jitter, besides the required bandwidth, have to be guaranteed. While the bandwidth is easier to guarantee during the lifetime of a VPN service, maintaining a value of the loss parameter below a preset value presents serious difficulties. Thus one of the main issues to be solved is to estimate the packet loss parameter effectively and accurately. Linking the stochastic characteristics of the traffic process to the loss probability has been examined as a solution under various contexts. Based on the large deviation theory (LDT), two types of asymptotic loss estimators have been studied extensively: the large buffer asymptotic and the large number of source asymptotic. This paper explores the application of the above estimators to the core links which aggregates lots of VPN services. To reduce the computational complexity, aggregate traffic approximation estimator is employed instead on the latter of the study. Firstly, the two practical estimators are derived based on LDT and Gaussian traffic model. Then their performances are evaluated in the live MPLS VPN network. Conclusion and suggestion for future research are formulated at the end of this paper","PeriodicalId":229045,"journal":{"name":"Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969)","volume":"438 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123612555","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

Minimizing the differential delay for virtually concatenated Ethernet over SONET systems 最小化SONET系统上虚拟连接以太网的差分延迟

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401628

S. Ahuja, T. Korkmaz, M. Krunz

{"title":"Minimizing the differential delay for virtually concatenated Ethernet over SONET systems","authors":"S. Ahuja, T. Korkmaz, M. Krunz","doi":"10.1109/ICCCN.2004.1401628","DOIUrl":"https://doi.org/10.1109/ICCCN.2004.1401628","url":null,"abstract":"We consider the problem of minimizing the differential delay in a virtually concatenated Ethernet over SONET (EoS) system by suitable path selection. The link capacity adjustment scheme (LCAS) enables network service providers to dynamically add STS-n channels to or drop them from a virtually concatenated group (VCG). A new STS-n channel can be added to the VCG provided that the differential delay between the new STS-n channel and the existing STS-n channels in the VCG is within a certain bound that reflects the available memory buffer supported by the EoS system. We model the problem of finding such a STS-n channel as a constrained path selection problem where the cost of the required (feasible) path is constrained not only by an upper bound but also by a lower bound. We propose two algorithms to find such a path. Algorithm I uses the well-known k-shortest-path algorithm. Algorithm II is based on a modified link metric that linearly combines the original link weight (the link delay) and the inverse of that weight. The theoretical properties of such a metric are studied and used to develop a highly efficient heuristic for path selection. Simulations are conducted to evaluate the performance of both algorithms in terms of the miss rate and the execution time (average computational complexity)","PeriodicalId":229045,"journal":{"name":"Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130213150","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: 40

Stochastic modelling of maintaining specified QoS constraints in discrete-time domain 在离散时间域中保持指定QoS约束的随机建模

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401601

L. Guan, M. Woodward, I. Awan

引用次数: 1

Efficient collection of sensor data in remote fields using mobile collectors 利用移动采集器在偏远地区高效采集传感器数据

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401721

Yuldi Tirta, Zhiyuan Li, Yung-Hsiang Lu, S. Bagchi

引用次数: 90

Reducing queue-fill variability for emergency traffic in a differentiated services network 减少差异化业务网络中紧急流量的队列填充可变性

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401603

Manali Joshi, C. Beard

引用次数: 0

Email worm modeling and defense 电子邮件蠕虫建模和防御

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401687

C. Zou, D. Towsley, W. Gong

引用次数: 126

Continuous space estimation for WLAN location determination systems 无线局域网定位系统的连续空间估计

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401614

M. Youssef, A. Agrawala

{"title":"Continuous space estimation for WLAN location determination systems","authors":"M. Youssef, A. Agrawala","doi":"10.1109/ICCCN.2004.1401614","DOIUrl":"https://doi.org/10.1109/ICCCN.2004.1401614","url":null,"abstract":"WLAN location determination systems add to the value of a wireless network by providing the user location without using any extra hardware. Current systems return the estimated user location from a set of discrete locations in the area of interest, which limits the accuracy of such systems to how far apart the selected points are. In this paper, we present two techniques to estimate the user location in the continuous physical space, namely the center of mass technique and time averaging technique. We test the performance of the two techniques in the context of the Horus WLAN location determination system under two different testbeds. Using the center of mass technique, the performance of the Horus system is enhanced by more than 13% for the first testbed and more than 6% for the second testbed. The time-averaging technique enhances the performance of the Horus system by more than 24% for the first testbed and more than 15% for the second testbed. The techniques are general and can be applied to any of the current WLAN location determination systems to enhance their accuracy. Moreover, the two techniques are independent and can be applied together to further enhance the accuracy of the current WLAN location determination systems","PeriodicalId":229045,"journal":{"name":"Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126818150","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: 48

A load balancing hierarchical model for micro-mobility 微移动负载均衡分层模型

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401665

Jing Li, S. Sampalli

引用次数: 2

Cooperative patching: a client based P2P architecture for supporting continuous live video streaming 协作补丁:基于客户端的P2P架构，支持连续的视频直播

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401712

M. Guo, M. Ammar, E. Zegura

引用次数: 13

A TCP-friendly congestion control to guarantee smoothness by slack term 一种tcp友好的拥塞控制，通过松弛项保证平滑

Proceedings. 13th International Conference on Computer Communications and Networks (IEEE Cat. No.04EX969) Pub Date : 2004-10-11 DOI: 10.1109/ICCCN.2004.1401642

Y. Lai, S. Chien

引用次数: 9