János Tapolcai, P. Chołda, T. Cinkler, K. Wajda, A. Jajszczyk, A. Autenrieth, S. Bodamer, D. Colle, G. Ferraris, H. Lønsethagen, I. Svinnset, D. Verchère
{"title":"Quality of resilience (QoR): NOBEL approach to the multi-service resilience characterization","authors":"János Tapolcai, P. Chołda, T. Cinkler, K. Wajda, A. Jajszczyk, A. Autenrieth, S. Bodamer, D. Colle, G. Ferraris, H. Lønsethagen, I. Svinnset, D. Verchère","doi":"10.1109/ICBN.2005.1589762","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589762","url":null,"abstract":"With the spread of survivable network the existing quality of service (QoS) classes are required to be expanded with service availability and maintainability issues. By including them in the service level agreements (SLAs) new and more complex requirements of commercial applications can be guaranteed. In this paper, a uniform framework of extending all types of QoS definitions with service availability characterization is proposed, and a new concept called quality of resilience (QoR) is defined. In addition, all service QoR parameters are expressed using the downtime probability density function and its derivatives. The new QoR factors meet the requirements of users, and the feasibility concerns of operators, which is illustrated by evaluating and comparing various resilience schemes in terms of the QoR framework","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130646156","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}
{"title":"WISTA: a wireless transmission system for disaster patient care","authors":"Y. Chu, Xin Huang, Aura Ganz","doi":"10.1109/ICBN.2005.1589721","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589721","url":null,"abstract":"In this paper, we introduce a low-cost and easily setup wireless multimedia transmission system that can assist patient care during disasters. With real-time transfer of data from video cameras, sensors and display of information on the devices (PDAs, laptops) of EMT (Emergency Medical Team) from multiple disaster sites to the control center, the system enables disaster managers to quickly obtain patients' status information from the entire disaster area, to assist the diagnosis and treatment of patients, reducing mortality and morbidity in disaster situation. Moreover, the disaster managers in the command center can remotely control the information sent from the disaster sites. We have implemented the system prototype over the wireless network and successfully demonstrated simultaneous transmission of video, sensor information, medical image and text patient information from multiple disaster sites to the control center. The experiments conducted on the system prototype validate our system design","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123926119","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}
{"title":"Building optical networks for the higher education and research community in Brazil","authors":"M. Stanton, J. L. Filho, N. da Silva","doi":"10.1109/ICBN.2005.1589782","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589782","url":null,"abstract":"The Brazilian National Research and Education Network - RNP - is currently engaged in a nationwide program to upgrade the capacity of the communications networks used by the Education and Research institutions in the country. An essential component of this program is the deployment of metropolitan optical networks in the major population centers. The article describes the background to this initiative, the methodology adopted and the expected results","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123213750","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}
{"title":"Alternatives for community metropolitan networks for the major cities of the Amazon region of Brazil: the case of Belem","authors":"A. Abelém, M. Stanton","doi":"10.1109/ICBN.2005.1589781","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589781","url":null,"abstract":"We make a comparative analysis of two proposals for setting up a facilities-based metropolitan network to serve the education and research community in the city of Belem do Para in Brazil, using the \"do-it-yourself\" (DIY) model of building infrastructure, and benefiting around a dozen research and education institutions. The first alternative is to build a fiber optic network, using Gigabit Ethernet technology. The second one uses a metropolitan wireless network, based on the IEEE 802.16 standard, studying the feasibility of the use of this technology in a context with the particular characteristics of the Amazon region. In both cases, we show that the capital cost for each institution is feasible, and that the total cost in the medium term is lower than the recurrent costs of maintaining the traditional model based on telecommunications provider services","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114795409","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}
J. Jobin, Zhenqiang Ye, Honomount Rawat, S. Krishnamurthy
{"title":"A lightweight framework for source-to-sink data transfer in wireless sensor networks","authors":"J. Jobin, Zhenqiang Ye, Honomount Rawat, S. Krishnamurthy","doi":"10.1109/ICBN.2005.1589676","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589676","url":null,"abstract":"Lightweight protocols that are both bandwidth and power thrifty are desirable for sensor networks. In addition, for many sensor network applications, timeliness of data delivery at a sink that collects and interprets raw sensor data is of great importance. In this work, we propose a lightweight framework for source-to-sink data transfer in a wireless sensor network that is geared towards achieving the above two objectives. Our integrated framework consists of three elements: 1) simple labels that eliminate complex addressing requirements, 2) implicit routing that provides an inherent robustness during sleep/wake schedules, and 3) MAC layer anycast to support routing. Our framework, in addition, facilitates the self-organization of sensor nodes into a network that efficiently relays information from the sources to the sink. The key idea of our framework is to associate each sensor node with a hierarchical level with respect to a sink and using MAC layer anycast to simply further packets to higher levels towards the sink. There are no explicit route tables created or maintained; this eliminates the overhead due to route queries or updates, the need for complex processing and the memory requirements for caching routing information. Furthermore, with our framework, the energy costs of data transmission are evenly distributed across the nodes, thereby improving the longevity of the network. Our MAC layer anycast mechanism not only facilitates routing, but also reduces the number of MAC layer back-offs incurred and, consequently, the waiting times for data transmission. This in turn, improves the timeliness of data delivery at the sink. To summarize, our framework is a) energy efficient, b) inherently robust, and c) conceptually simple. We qualitatively assess our scheme to show its efficiency in terms of power consumption, robustness to failure, ease of setup. The results from our simulations and assessments demonstrate the aforementioned benefits and the viability and potential of using our framework.","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125469626","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}
{"title":"Evaluating saturation throughput performance of the IEEE 802.11 MAC under fading channels","authors":"S. Ci, H. Sharif","doi":"10.1109/ICBN.2005.1589673","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589673","url":null,"abstract":"Accurately modeling the IEEE 802.11 MAC is critical to design resource allocation, admission control and scheduling schemes for QoS provisioning in wireless LANs. However, it is difficult to model the saturation throughput performance of the IEEE 802.11 MAC due to the fact that the memory effect existing among different stages in the random backoff procedure. Therefore, Markov chain has been used to characterize the saturation throughput performance of the IEEE802.11 CSMA/CA protocol in many research efforts. However, one of the problems existing in the current research failed to consider all key practical issues altogether such as retry limit, backoff suspensions and the fading channel errors. Therefore, an accurate and realistic model of the IEEE 802.11 MAC protocol with fading channel errors is needed. In this work, we propose a new model based on Markov chain and validate its correctness by theoretical analyses and Ns-2 simulations. We also compared our results with other current major models. Our contributions in this work are: 1) taking the backoff suspension into considerations and derive a more accurate model than other current models; 2) introducing the fading channel errors into the modeling process and derive a close form equation of the saturation throughput performance of the 802.11 DCE simulation results show that the proposed model is same as accurate as other current models, and becomes much more accurate when considering fading channel errors.","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115779907","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}
{"title":"Cross-layer throughput analysis for optical code labeled GMPLS networks","authors":"T. Khattab, H. Alnuweiri","doi":"10.1109/ICBN.2005.1589634","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589634","url":null,"abstract":"The use of optical CDMA as a labeling mechanism in generalized multi-protocol label switching (GMPLS) optical networks significantly increases the traffic isolation capabilities. These networks, referred to as optical code labeled GMPLS (OC-GMPLS), have higher resource utilization due to the finer flow granularity introduced into the network. In this paper we present a cross-layer mathematical model for the throughput of OC-GMPLS networks, which provides a quantitative measure for the performance of optical networks throughput taking into consideration the effect of the physical layer. The proposed mathematical model incorporates the physical layer effects on the network layer performance by expressing the throughput as a function of the physical layer bit error rate, as well as the network traffic parameters such as the number of users and the packet length. Using the developed analytical model we were able to demonstrate the significant enhancement in the network performance due to the use of OC-GMPLS. We also used our analytical model to derive several optimum network operating points, which are of great importance to network designers and researchers.","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131498471","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}
{"title":"A Bluetooth scatternet formation and healing protocol for ad-hoc group collaboration","authors":"D. Kalofonos, Somil Asthana","doi":"10.1109/ICBN.2005.1589684","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589684","url":null,"abstract":"In this paper, we present a new tree-based Bluetooth (BTH) scatternet formation and healing protocol called GC-tree, Our protocol enables group collaboration, e.g. wireless ad-hoc meetings, where individuals bring piconets with their devices in a scatternet to collaborate. We present experimental performance results from a prototype implementation using uff-the-self BTH v1.1 hardware and Linux-based devices. Finally, we complement our experimental results with a realistic simulation model","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131602465","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}
{"title":"Measuring performance impact of security protocols in wireless local area networks","authors":"A. K. Agarwal, Wenye Wang","doi":"10.1109/ICBN.2005.1589663","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589663","url":null,"abstract":"In this paper, we study and quantify the impact of the most widely used security protocols, such as 802.1x, EAP, IPSEC, SSL and RADIUS, in wireless local area networks (WLANs). Based on the measurements in a wireless network testbed, we present quantitative, realistic findings with regards to both security functions as well as network performance. First, we describe experimental setup including system configuration and protocol stack. Then, we consider a variety of individual and hybrid security policies in order to capture the impact of security services at different network layers. Moreover, depending upon mobile nodes' current location, user mobility is categorized into non-roaming and roaming scenarios. In addition, we define several performance metrics such as authentication time, authentication messages, response time, throughput to measure the overhead associated with security policies on system performance. Comprehensive experimental measurements and analysis are provided for TCP/UDP traffic streams and network variations to demonstrate the impact of security protocols in WLANs.","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133351863","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}
F. Farahmand, M. de Leenheer, P. Thysebaert, B. Volckaert, F. De Turck, B. Dhoedt, P. Demeestert, J. Jue
{"title":"A multi-layered approach to optical burst-switched based grids","authors":"F. Farahmand, M. de Leenheer, P. Thysebaert, B. Volckaert, F. De Turck, B. Dhoedt, P. Demeestert, J. Jue","doi":"10.1109/ICBN.2005.1589723","DOIUrl":"https://doi.org/10.1109/ICBN.2005.1589723","url":null,"abstract":"In this paper we consider implementing optical burst switching as an alternative approach to meet computationally intensive grid applications. Such architecture has been referred to as grid-over-OBS (GoOBS). We first present a unique layered architecture for grid-over-OBS and position OBS protocol stack within the framework of the layered grid architecture. Then, we present a generic framework for anycast routing in the context of GoOBS when requests don't have explicit addresses and they can be serviced by any appropriate grid resource. We develop several algorithms to support an casting when only a single copy of a request is transmitted. Through simulation analysis, we show the performance of our anycast algorithms and compare them with the shortest-path unicast routing in which all jobs have specific addresses. In our performance analysis, we focus on average end-to-end delay and blocking probability of requests","PeriodicalId":113201,"journal":{"name":"2nd International Conference on Broadband Networks, 2005.","volume":"151 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132090003","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}