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2008 IEEE International Workshop on Factory Communication Systems最新文献

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Industrial applications of IEEE 802.11e WLANs IEEE 802.11e无线局域网的工业应用
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638739
G. Cena, I. Bertolotti, Adriano Valenzano, C. Zunino
{"title":"Industrial applications of IEEE 802.11e WLANs","authors":"G. Cena, I. Bertolotti, Adriano Valenzano, C. Zunino","doi":"10.1109/WFCS.2008.4638739","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638739","url":null,"abstract":"Nowadays, wireless communication technologies are being employed in an ever increasing number of different application areas, including industrial environments. Unfortunately, because of several reasons, among which their random access technique, they are not usually considered suitable for connecting devices at the field level. In this paper, the performance that can be achieved by QoS-enabled WLANs (e.g., IEEE 802.11e networks) to support communication in industrial environments is analysed in depth. In particular, it is shown that they can be profitably adopted even at the shop-floor, provided that there are not critical safety requirements or tight timing constraints. Despite the lower determinism and reliability, the resulting performance resembles closely that achievable with fieldbuses.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121476581","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: 17
Ontology-based agent modeling — a formal methodology to incorporate a domain ontology in a multi-agent system 基于本体的智能体建模——一种在多智能体系统中整合领域本体的形式化方法
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638721
M. Georgoudakis, C. Alexakos, A. Kalogeras, J. Gialelis, S. Koubias
{"title":"Ontology-based agent modeling — a formal methodology to incorporate a domain ontology in a multi-agent system","authors":"M. Georgoudakis, C. Alexakos, A. Kalogeras, J. Gialelis, S. Koubias","doi":"10.1109/WFCS.2008.4638721","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638721","url":null,"abstract":"The introduction of semantics via ontologies in the industrial environment combined with autonomous agents for the decentralization of production processes has drawn a lot of attention. The common denominator in all proposals attempting to combine semantics and intelligent agent was the semantic gap between them which, at best, was attempted to be bridged with an auxiliary ontology. In this paper we go a step beyond to addressing this problem, by proposing a methodology that could considerably leverage the actual implementation of the multi-agent system.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122661823","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
Dynamic evaluation of costs in combined wired and wireless LAN 有线与无线组合局域网中成本的动态评估
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638709
A. Luntovskyy, V. Vasyutynskyy, K. Kabitzsch
{"title":"Dynamic evaluation of costs in combined wired and wireless LAN","authors":"A. Luntovskyy, V. Vasyutynskyy, K. Kabitzsch","doi":"10.1109/WFCS.2008.4638709","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638709","url":null,"abstract":"Evaluation and prediction of the overall costs for installation and upgrade of combined wired and wireless LAN under consideration of the time factor are presented in this paper. Advanced dynamic costs models under considering of different QoS requirements are investigated. These models allow more exact prediction of network costs at some time moment in the future. The determining of cost model parameters is discussed. The network costs optimization approaches are used to define the necessary capital expenditures in the time moment of network upgrade.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121204651","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: 2
Experiments for real-time communication contracts in IEEE 802.11e EDCA networks IEEE 802.11e EDCA网络中实时通信契约的实验
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638747
M. Sojka, M. Molnár, Z. Hanzálek
{"title":"Experiments for real-time communication contracts in IEEE 802.11e EDCA networks","authors":"M. Sojka, M. Molnár, Z. Hanzálek","doi":"10.1109/WFCS.2008.4638747","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638747","url":null,"abstract":"In this paper we describe basic experiments measuring communication delays in IEEE 802.11e EDCA networks. Based on results of these experiments we have designed a simple utilization based admission test to support wireless networks in a contract framework.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127247070","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: 9
Wireless networked control system using NDIS-based four-layer architecture for IEEE 802.11b 无线网络化控制系统采用基于ndis的四层架构，适用于IEEE 802.11b
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638754
Suk Lee, Jee-Hun Park, K. Ha, K. Lee
{"title":"Wireless networked control system using NDIS-based four-layer architecture for IEEE 802.11b","authors":"Suk Lee, Jee-Hun Park, K. Ha, K. Lee","doi":"10.1109/WFCS.2008.4638754","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638754","url":null,"abstract":"This paper presents the feasibility of using the IEEE 802.11b protocol for wireless networked control systems (NCSs). The IEEE 802.11b protocol is considered to be not suitable for industrial networking because the medium access control method is contention-based CSMA/CA, which exhibits unstable performance with an unbounded delay distribution under heavy traffic. To avoid these limitations, we present a four-layer architecture for IEEE 802.11b based on the network driver interface specification (NDIS) combined with a virtual scheduling algorithm. We compare the performance of NDIS-based wireless NCS to that of a conventional wireless NCS. Experimental results show that the NDIS-based four-layer architecture for IEEE 802.11b is a very promising alternative for wireless industrial networking.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"284 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121735581","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: 13
Limitations of the IEEE 802.11e EDCA protocol when supporting real-time communication IEEE 802.11e EDCA协议在支持实时通信时的局限性
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638712
R. Moraes, P. Portugal, F. Vasques, J. Fonseca
{"title":"Limitations of the IEEE 802.11e EDCA protocol when supporting real-time communication","authors":"R. Moraes, P. Portugal, F. Vasques, J. Fonseca","doi":"10.1109/WFCS.2008.4638712","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638712","url":null,"abstract":"In this paper, we analyze the timing behavior of the EDCA communication mechanism defined in the IEEE 802.11e standard, when it is used to support real-time (RT) traffic. In the context of this paper, RT traffic means small sized packets generated in periodic intervals, which must be delivered before the end of the message stream period. Otherwise, the message is considered to be delayed and a deadline loss occurs. The target of this paper is to understand the limitations of the highest priority level of the EDCA mechanism (voice category) when supporting RT communication. We have assessed this mechanism considering an open communication environment, where there are RT and non-RT stations operating in the same frequency band. Furthermore, a realistic error-prone model channel was used to measure the impact of interferences against an error-free channel. We show that in the most cases evaluated, both the number of packet losses and the average packet delays forecast an unacceptable number of deadline losses for the RT message streams, even for intermediate load cases. As a conclusion of this paper, we present some potential future directions toward improved QoS in wireless networks.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133180795","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: 29
Tightening end to end delay upper bound for AFDX network calculus with rate latency FIFO servers using network calculus 使用网络演算收紧具有速率延迟FIFO服务器的AFDX网络演算的端到端延迟上界
2008 IEEE International Workshop on Factory Communication Systems Pub Date : 2008-05-21 DOI: 10.1109/WFCS.2008.4638728
M. Boyer, C. Fraboul
{"title":"Tightening end to end delay upper bound for AFDX network calculus with rate latency FIFO servers using network calculus","authors":"M. Boyer, C. Fraboul","doi":"10.1109/WFCS.2008.4638728","DOIUrl":"https://doi.org/10.1109/WFCS.2008.4638728","url":null,"abstract":"This paper presents some new results in network calculus designed to improve the computation of end to end bounds for an AFDX network, using the FIFO assumption. The formal contribution is to allow to handle shaped leaky buckets flows traversing simple rate-latency network elements. Two new results are presented when a sum of some shaped flows crosses one single network element: the first one considers the global aggregated flow, and the second one considers each individual flow, assuming FIFO policy. Some configurations are tested, and the first results obtained are in almost all cases better than already known methods.","PeriodicalId":352963,"journal":{"name":"2008 IEEE International Workshop on Factory Communication Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129732725","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: 61
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