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Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)最新文献

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Adaptive multi-path on-demand routing in mobile ad hoc networks 移动自组织网络中的自适应多路径按需路由
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.8
Wajahat Mateen, Saqib Raza, Z. Uzmi, Shahab Baqai
{"title":"Adaptive multi-path on-demand routing in mobile ad hoc networks","authors":"Wajahat Mateen, Saqib Raza, Z. Uzmi, Shahab Baqai","doi":"10.1109/ISORC.2005.8","DOIUrl":"https://doi.org/10.1109/ISORC.2005.8","url":null,"abstract":"We present AMOR, a new scheme for on-demand routing in wireless ad hoc networks. In ad hoc networks, mobile nodes are connected to each other such that the connection pattern changes dynamically with the mobility of nodes. Therefore, classical table driven routing algorithms necessitate updated network state information to be periodically disseminated, and incur significant costs in terms of network utilization, memory, and associated update-processing. In contrast, on-demand routing algorithms do not maintain pre-computed routes and real time route discovery ensues when data traffic needs to be transmitted between a source-destination pair. AMOR employs a modified version of the Dynamic Source Routing protocol to discover multiple node-disjoint paths between a source-destination pair. A key feature of AMOR is that instead of computing minimum-hop paths, it computes paths such that a measure of the 'transmission reliability', namely ETX, between the source-destination pair is optimized. Furthermore, AMOR employs a real time loading algorithm that optimally load balances traffic across multiple paths. The control traffic overhead in AMOR is comparable to that of single-path on-demand protocols. We present analytical throughput results in a simplified AMOR model of a network of multi-radio nodes. We also conduct simulation experiments to study the throughput performance of the AMOR scheme in a network of single-radio nodes. Our results show that AMOR outperforms the traditional dynamic source routing algorithm.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122912957","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
Towards the integration of scoped memory in distributed real-time Java 面向分布式实时Java中作用域内存的集成
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.61
P. Basanta-Val, M. García-Valls, I. Estévez-Ayres
{"title":"Towards the integration of scoped memory in distributed real-time Java","authors":"P. Basanta-Val, M. García-Valls, I. Estévez-Ayres","doi":"10.1109/ISORC.2005.61","DOIUrl":"https://doi.org/10.1109/ISORC.2005.61","url":null,"abstract":"This paper presents a memory management solution for distributed real-time Java. The proposed model is targeted at distributed applications that require to keep their internal state and that consume a bounded memory size in their operation. The aim is to provide an alternative to the garbage collector for distributed real-time systems and to avoid the penalties it introduces. The approach is based on the usage of scoped memory defined in the real-time specification for Java (RTSJ). Our solution introduces constraints in the programming model and in the current distributed Java architecture. However, these are compensated by eliminating the dependency of the garbage collector in the end-to-end invocation and by achieving self-cleaning with respect to the memory consumed by remote invocations.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125977873","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
Rule-base technique for component adaptation to support QoS-based reconfiguration 基于规则的组件适应技术，支持基于qos的重新配置
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.48
Jia Zhou, K. Cooper, I. Yen, R. Paul
{"title":"Rule-base technique for component adaptation to support QoS-based reconfiguration","authors":"Jia Zhou, K. Cooper, I. Yen, R. Paul","doi":"10.1109/ISORC.2005.48","DOIUrl":"https://doi.org/10.1109/ISORC.2005.48","url":null,"abstract":"Many critical application systems require reconfigurability in order to adapt under changing environment. To achieve system reconfigurability, it is possible to use adaptation mechanisms that are external to components or to use parameterized components. This paper focuses on making components reconfigurable in terms of QoS tradeoffs. We propose a new component parameterization technique which can transform individual components to reconfigurable ones such that they can support various QoS tradeoffs to achieve overall system QoS requirements. The parameterized components can be used to develop both statically and dynamically reconfigurable systems. The proposed technique is rule based, which provides flexibility and extensibility to enhance and improve the technique. A tool set has been developed based on the proposed technique to achieve semi-automated component parameterization.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130777125","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
Adaptive real-time update dissemination in distributed virtual simulation environments 分布式虚拟仿真环境中的自适应实时更新传播
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.9
Fang Chen, V. Kalogeraki
{"title":"Adaptive real-time update dissemination in distributed virtual simulation environments","authors":"Fang Chen, V. Kalogeraki","doi":"10.1109/ISORC.2005.9","DOIUrl":"https://doi.org/10.1109/ISORC.2005.9","url":null,"abstract":"In this work we propose and evaluate a framework for efficient and real-time dissemination of dynamic data in distributed simulation virtual environments in a scalable fashion. A peer-to-peer overlay is used to create self-organizing groups of participants. Filters that combine application-level knowledge are utilized to control the message propagations and minimize the end-to-end delays. Our approach enables nodes to trade-off processing overhead for consistency precision. Our simulation results illustrate that our techniques meet the consistency requirements of the participants, while minimizing the data transmissions and the message delays.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122232065","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
Formalization and analysis of dataflow in object-oriented design models 面向对象设计模型中数据流的形式化与分析
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.28
Toshiaki Aoki, T. Katayama
{"title":"Formalization and analysis of dataflow in object-oriented design models","authors":"Toshiaki Aoki, T. Katayama","doi":"10.1109/ISORC.2005.28","DOIUrl":"https://doi.org/10.1109/ISORC.2005.28","url":null,"abstract":"In the upstream phase of object-oriented development, we usually model a target system from multiple points of view. A dataflow view has been recognized as one of the most important views in software engineering. We need to relate dataflow models to OO models and check consistency between them as it is still important even if we adopt object-oriented approach. In this paper, we propose a method to analyze dataflows in OO design models with the model checker Spin after formalizing them.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"139 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123774709","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 recent advances in time/utility function real-time scheduling and resource management 时间/效用函数实时调度和资源管理的最新进展
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.39
B. Ravindran, E. Jensen, Peng Li
{"title":"On recent advances in time/utility function real-time scheduling and resource management","authors":"B. Ravindran, E. Jensen, Peng Li","doi":"10.1109/ISORC.2005.39","DOIUrl":"https://doi.org/10.1109/ISORC.2005.39","url":null,"abstract":"We argue that the key underpinning of the current state-of-the real-time practice - the priority artifact - and that of the current state-of-the real-time art - deadline-based timeliness optimality - are entirely inadequate for specifying timeliness objectives, for reasoning about timeliness behavior, and for performing resource management that can dependably satisfy timeliness objectives in many dynamic real-time systems. We argue that time/utility functions and the utility accrual scheduling paradigm provide a more generalized, adaptive, and flexible approach. Recent research in the utility accrual paradigm has significantly advanced the state-of-the-art of that paradigm. We survey these advances.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127188121","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: 104
Fault-tolerant hard-real-time communication of dynamically reconfigurable, distributed embedded systems 动态可重构分布式嵌入式系统的容错硬实时通信
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.27
André Luiz de Freitas Francisco, F. Rammig
{"title":"Fault-tolerant hard-real-time communication of dynamically reconfigurable, distributed embedded systems","authors":"André Luiz de Freitas Francisco, F. Rammig","doi":"10.1109/ISORC.2005.27","DOIUrl":"https://doi.org/10.1109/ISORC.2005.27","url":null,"abstract":"Building up hard-real-time networks for distributed systems with dynamical structures poses severe design challenges. As the set of nodes varies, the use of protocols, which request a complete setup with every modification, becomes prohibitive. This paper presents a new concept (called TrailCable) that aims at increasing the flexibility in building up hard-real-time communication systems. The concept consists of an extendable network made up of point-to-point connections, with each node acting as a router with an integrated communication scheduler. The protocol offers the possibility to use unallocated bandwidth for periodic data transmissions. Moreover, functionalities that guarantee the communication channels to be fault-tolerant are also included. Through the collection of these properties, the protocol described in this paper is well adapted to highly dynamic, distributed real-time systems. As a case study, this new communication protocol is applied to an innovative railway system, the so-called RailCab.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"233 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128628586","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
TMO-structured distributed location information system prototype tmo结构的分布式位置信息系统原型
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.59
Yunmook Nah, Joonwook Lee, Seungyong Park, Ho Lee, Sangwoo Kim, Moon-hae Kim, Ki-Joon Han
{"title":"TMO-structured distributed location information system prototype","authors":"Yunmook Nah, Joonwook Lee, Seungyong Park, Ho Lee, Sangwoo Kim, Moon-hae Kim, Ki-Joon Han","doi":"10.1109/ISORC.2005.59","DOIUrl":"https://doi.org/10.1109/ISORC.2005.59","url":null,"abstract":"To realize location-based services, it is essential to handle the extreme situation that must cope with a very large volume, at least millions, of moving items. In this paper, we describe a location information system prototype of GALIS, which is a cluster-based scalable distributed computing system architecture which consists of multiple data processors, each dedicated to keeping records relevant to a different geographical zone and a different time zone. The proposed system contains all of the major computing nodes of GALIS architecture and is developed as a middleware on top of commercial main-memory database engines and spatial database engines, for short-term data and long-term data processing, respectively. To show the usefulness of our system, some experimental results showing clear advantages of distributed computing are also explained.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134037437","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: 4
On the adequacy of UML-RT for performance validation of an SDH telecommunication system 关于UML-RT对SDH电信系统性能验证的充分性
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.41
V. Cortellessa, P. Pierini, D. Rossi
{"title":"On the adequacy of UML-RT for performance validation of an SDH telecommunication system","authors":"V. Cortellessa, P. Pierini, D. Rossi","doi":"10.1109/ISORC.2005.41","DOIUrl":"https://doi.org/10.1109/ISORC.2005.41","url":null,"abstract":"This paper illustrates an industrial application of a performance validation methodology, which integrates software and resource models in a UML-RT development environment. The methodology is successfully applied on a synchronous digital hierarchy (SDH) telecommunication system modeled and simulated using the Rose Real Time toolset. The case study demonstrates the validity of the methodology, and it is an opportunity to refine the mechanisms of the methodology as well as to extend its scope. One of the key factors that the case study highlights is the concept of \"transparency\", i.e. the ability to apply a performance validation methodology without deeply modifying the software development process and environment.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"230 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132653336","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
Mackinac: making HotSpot/spl trade/ real-time Mackinac:使HotSpot/spl交易/实时
Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05) Pub Date : 2005-05-18 DOI: 10.1109/ISORC.2005.31
G. Bollella, Bertrand Delsart, Romain Guider, C. Lizzi, Frédéric Parain
{"title":"Mackinac: making HotSpot/spl trade/ real-time","authors":"G. Bollella, Bertrand Delsart, Romain Guider, C. Lizzi, Frédéric Parain","doi":"10.1109/ISORC.2005.31","DOIUrl":"https://doi.org/10.1109/ISORC.2005.31","url":null,"abstract":"The Real-Time Specification for Java/spl trade/ (RTSJ) is an API specification that allows developers to write real-time applications using the Java programming language. Project Mackinac is the code name of Sun Microsystems' RTSJ development effort. This paper reviews the main requirements from the RTSJ itself, presents additional requirements defined by the Mackinac implementation team, explains various implementation strategies used to meet the requirements, and presents performance results from tests executed against the current development version of Mackinac.","PeriodicalId":377002,"journal":{"name":"Eighth IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC'05)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133352495","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: 35
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