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Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.最新文献

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Prediction of possible congestions in SLA creation process 预测SLA创建过程中可能出现的拥塞
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185913
S. Krile, I. Pezelj
{"title":"Prediction of possible congestions in SLA creation process","authors":"S. Krile, I. Pezelj","doi":"10.1109/CONTEL.2005.185913","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185913","url":null,"abstract":"In our paper we propose efficient tool to predict possible traffic congestions caused by contracting of a new SLA (Service Level Agreement). It could be an important part of admission control process in SLA creation (DiffServ networks). Naturally, it is off-line algorithm and we can use it only through negotiation process (SLA creation), just to ensure better QoS end-to-end routing in the moment of service invocation. The problem is seen as an expansion problem of link capacities in given limits for given traffic demands (SLAs). Such explicit traffic engineering technique provides the possibility to intelligently tailor the route such that different parts of the network remain equally loaded. It helps to avoid the creation of bottleneck links on the path and maintains high network resource utilization efficiency. Also, it is capable to consider the impact of end-to- end delay on network resource provisioning, in the moment of SLA creation. Index Terms - admission control in DiffServ networks, SLA creation, end-to-end QoS routing, traffic routing of aggregate flows.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114199885","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
Modeling, verifying and testing the mobility management in the mobile IPv6 protocol 对移动IPv6协议中的移动性管理进行建模、验证和测试
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185970
F. N. Noudem, C. Viho
{"title":"Modeling, verifying and testing the mobility management in the mobile IPv6 protocol","authors":"F. N. Noudem, C. Viho","doi":"10.1109/CONTEL.2005.185970","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185970","url":null,"abstract":"Mobility systems are complex. They are composed of several distributed, heterogeneous and, obviously, mobile components. The paper deals with the modeling, verification and testing of mobility protocols using the SDL approach. A well suited model is proposed to handle the component-based nature of mobile systems. We show that the chosen model allows the verification of mobility mechanisms and the performance of conformance and interoperability testing. The solution suggested to derive the test cases in the new testing language, TTCN-3, is described","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116365067","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
A conceptual modeling framework for internet traffic engineering problems 互联网流量工程问题的概念建模框架
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185833
S. Misra, S. Misra, I. Woungang
{"title":"A conceptual modeling framework for internet traffic engineering problems","authors":"S. Misra, S. Misra, I. Woungang","doi":"10.1109/CONTEL.2005.185833","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185833","url":null,"abstract":"We present a conceptual modeling framework for analyzing and modeling solutions to different Internet Traffic Engineering (ITE) problems involving measurement, characterization, and control of network or inter-network traffic. The framework bases itself on the concept of \"Clusters\" which can, in fact, be used to model many other network problems. Our effort is targeted towards a large- scale initiative for designing a Unified Modeling Language (UML) Profile for conceptual modeling of typical next- generation network problems. In this paper we present UML-based framework to support modeling ITE problems. The modeling framework extends UML 1.5 and is contributes towards an initiative by the authors to create a robust UML Profile for ITE (PoITE). The contribution of the work is to provide the area of ITE with basic concepts and structure for designing UML models for solving ITE problems. In brief, the area of ITE encompasses issues pertaining to the performance evaluation and performance optimization of operational IP networks. Traffic Engineering (9,10), as such, focuses on the application of technology and scientific principles to the measurement, characterization, modeling, and control of network or inter-network traffic (3). ITE is a complex area of networking that takes into account many aspects and scenarios corresponding to different environments. However, in this paper, we consider an abstraction that avoids many finer details of ITE, and instead, focuses on providing a generic framework that can support modeling ITE problems. This document is based on: • RFC3272 (Principles of Internet Traffic Engineering) (3), and","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129800091","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
Project management in research projects 研究项目的项目管理
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185981
D. Huljenic, S. Desic, M. Matijasevic
{"title":"Project management in research projects","authors":"D. Huljenic, S. Desic, M. Matijasevic","doi":"10.1109/CONTEL.2005.185981","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185981","url":null,"abstract":"Project Management (PM) is a set of activities which enables successful implementation of a project, where a project may be defined as involving a group of inter- related activities that are planned and then executed in a certain sequence to create a unique output (product or service) within a specific time frame. Research projects differ in many ways from development projects, the most significant being (lack of) clear requirements and (in)ability to plan an output from the start of the project. In terms of outputs, evaluation criteria for a research project must take into account such, we well as other \"particularities\"; for example, that proving that something can not be done may represent a positive result for a research project. This article describes particularities of research projects, and proposes adequately adjusted project management process and practices. It also gives examples and evaluation of successful application thereof in practice, in joint projects between academia and industry over the past five years.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122649082","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: 15
An analytical investigation of the behavior of a priority queuing system with a mix of correlated train and uncorrelated batch arrivals 具有相关列车和不相关批次到达的混合优先排队系统行为的分析研究
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185922
F. Kamoun
{"title":"An analytical investigation of the behavior of a priority queuing system with a mix of correlated train and uncorrelated batch arrivals","authors":"F. Kamoun","doi":"10.1109/CONTEL.2005.185922","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185922","url":null,"abstract":"In this paper, we present an exact transient and steady-state analysis of a discrete-time queuing system with two head-of-line (HOL) priority queues and a mix of correlated and uncorrelated arrivals. The arrival process to the high priority queue is correlated and consists of a train of a fixed number of cells, while the low priority traffic consists of batch arrivals that are independent and identically distributed from slot-to-slot. In the first part of the paper, we derive an expression for the functional equation describing the transient evolution of this priority queuing system. This functional equation is then manipulated and transformed into a mathematical tractable form, which allows us to derive the transient joint probability generating function (pgf) of the system. From this transient pgf, time-dependent performance measures such as transient probability of empty queue, transient mean of buffer occupancy and instantaneous packet overflow probabilities can be derived. By applying the final- value theorem, the corresponding exact expressions for the steady-sate marginal pgfs of the system contents are derived. Finally, we illustrate our solution technique with some numerical examples, whereby we demonstrate the negative effect of correlation (in the high-priority queue) on the performance of the low-priority queue. The proposed approach which is purely based on probability generating functions is entirely analytical and does not require any matrix concepts. The paper presents new results on the transient and steady-state performance analysis of priority queues.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123996160","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
On the quality of deployment in wireless sensor networks 无线传感器网络部署质量研究
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185950
E. Onur, Cem Ersoy, H. Deliç
{"title":"On the quality of deployment in wireless sensor networks","authors":"E. Onur, Cem Ersoy, H. Deliç","doi":"10.1109/CONTEL.2005.185950","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185950","url":null,"abstract":"When wireless sensors are used to keep an area under surveillance, a critical issue is the quality of the deployment from the sensing coverage viewpoint. In this paper, we propose several quality measures, which indicate if the deployment provides sufficient coverage, or whether redeployment is required or not. The terrain is modelled as a grid and the placement of the sensors is uniformly dis- tributed. Neyman-Pearson detection is utilized to determine the effects of false alarm and signal characteristics on the measures.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124317827","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: 3
Net-planner: a capacity allocation tool Net-planner:容量分配工具
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185840
G. Deprez, M. Padmaraj, S. Nair
{"title":"Net-planner: a capacity allocation tool","authors":"G. Deprez, M. Padmaraj, S. Nair","doi":"10.1109/CONTEL.2005.185840","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185840","url":null,"abstract":"The Internet abounds today because of the interconnection of a vast number of sub-networks worldwide. This type of network requires special routing to form connections between end stations. Computing and procuring the necessary equipment to support a network's demands is called provisioning. Reliable network provisioning should include spare capacity allocations, in addition to the usual working capacity allocations. Given that provisioning must start somewhere, planners estimate the demands they will encounter. Once this is done, algorithms may be applied which compute the shortest path for each demand according to the best route types. This paper will describe our solution to this provisioning problem. It will also show how we incorporated it into a comprehensive planning tool which was developed in cooperation with a major U.S. carrier.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123343019","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: 3
Boosting the performance of an adaptive push system in environments with locality of demand 提高需求局部性环境下自适应推送系统的性能
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185883
Petros Nicopolitidis, G. Papadimitriou, A. Pomportsis
{"title":"Boosting the performance of an adaptive push system in environments with locality of demand","authors":"Petros Nicopolitidis, G. Papadimitriou, A. Pomportsis","doi":"10.1109/CONTEL.2005.185883","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185883","url":null,"abstract":"In many data broadcasting applications, clients are grouped into several groups, each one located in a different region, with the members of each group having similar demands. This paper proposes a mechanism that exploits locality of demand in order to increase the perfor- mance of wireless data dissemination systems. Specifically, it trades the received energy per bit redundancy at distances smaller than the radius of the service area for an increased bit rate for transmission of items demanded by clients at such distances. This results to an increased transmission speed for many items. The bit rate for an item transmission is dynamically determined from the distance between the server's antenna to the group of clients that demand this item via a simple feedback from the clients. Simulation results are presented that reveal significant performance im- provement over fixed bit rate broadcasting in environments characterized by locality of client demands.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123386545","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
All optical fibre auxiliary carrier based 2R regenerator 全光纤辅助载波型2R再生器
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185944
D. Forin, F. Curti, G. T. Tosi Beleffi, F. Matera, M. Guglielmuci
{"title":"All optical fibre auxiliary carrier based 2R regenerator","authors":"D. Forin, F. Curti, G. T. Tosi Beleffi, F. Matera, M. Guglielmuci","doi":"10.1109/CONTEL.2005.185944","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185944","url":null,"abstract":"A novel all-optical 2R regenerator is proposed. Reshaping and conversion behaviours in a multi-wave- mixing regime inside a particular dispersion-shifted fibre are induced on a third auxiliary carrier improving the conversion range and bit-error-rate performances.","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114355794","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
Project overlapping and its influence on the product quality 项目重叠及其对产品质量的影响
Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005. Pub Date : 2005-06-15 DOI: 10.1109/CONTEL.2005.185980
T. Galinac, S. Golubić
{"title":"Project overlapping and its influence on the product quality","authors":"T. Galinac, S. Golubić","doi":"10.1109/CONTEL.2005.185980","DOIUrl":"https://doi.org/10.1109/CONTEL.2005.185980","url":null,"abstract":"Time to market, quality and cost are the three most important factors when developing software. In order to achieve and retain a leading position in the market, developers are forced to produce more complex functionalities, much faster and more frequently. In such conditions, it is hard to keep a high quality level and low cost. The article focuses on the reliability aspect of quality as one of the most important quality factors to the customer. Special attention is devoted to the reliability of the software product being developed in project overlapping conditions. The Weibull reliability growth model for predicting the reliability of a product during the development process is adapted and applied to historical data of a sequence of overlapping projects. A few useful tips on reliability modeling for project management and planning in project overlapping conditions are presented","PeriodicalId":265923,"journal":{"name":"Proceedings of the 8th International Conference on Telecommunications, 2005. ConTEL 2005.","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131391920","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
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