Tomoya Okazaki, Mario Takeuchi, Eitaro Kohno, Y. Kakuda
{"title":"Self-Organized Routing ID Tree-Based Multipath Construction for Ad Hoc Networks","authors":"Tomoya Okazaki, Mario Takeuchi, Eitaro Kohno, Y. Kakuda","doi":"10.1109/ISORCW.2012.38","DOIUrl":"https://doi.org/10.1109/ISORCW.2012.38","url":null,"abstract":"In ad hoc networks, the network topology changes because of the node mobility. Routing protocols should keep their data delivery performance by dynamical reconstruction of the routes. In this paper, we propose a routing method using a self-organized routing ID tree. Our proposed method keeps the data delivery performance by decreasing the frequency of link cuts between two nodes in parent-child relationships. In addition our proposed method makes it possible to self-restore the broken routes in a real-time way only to exchange the link update information between groups on both sides of the broken link. We have implemented our method on the network simulator, Qualnet and evaluated our proposed method in comparison with OLSRv2 and our previously proposed method, namely SRIDR. We measured data delivery ratio and the amount of control packets on each method. Our proposed method shows higher data delivery ratio than OLSRv2 in the network in which nodes move at relatively low speeds.","PeriodicalId":408357,"journal":{"name":"2012 IEEE 15th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops","volume":"214 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132620835","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 Reality Check of Multiple Snowball Tree File Dissemination in Large Scale Cloud Cluster","authors":"Zhang Zhaoning, Lu Xicheng, Peng Yuxing, Li Huiba","doi":"10.1109/ISORCW.2012.24","DOIUrl":"https://doi.org/10.1109/ISORCW.2012.24","url":null,"abstract":"Nowadays, Infrastructure-as-a-Service (IaaS) cloud become popular to provide more and more compute powers. The importance of resources management in the private cloud clusters raise correspondingly, as it's the significate guarantee to the service quality. When IaaS providers provide user large scale of virtual machine instances, users can't stand long for the preparation phase of the instances initialization, especially when the scale is really large. In this paper, we present a reality check of IaaS cloud large file dissemination. We deploy the experiments in National Super Computing Center in Tianjin (NSCC-TJ), China, which use multiple snowball tree algorithm to dissemination virtual machine images, software packages, software or system kernel updates in large quantity. We optimize and accelerate the algorithm to fit our system and environment. As a comparison, it speed up the image dissemination progress to 1 hour from 30 hours using Eucalyptus.","PeriodicalId":408357,"journal":{"name":"2012 IEEE 15th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121392627","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}
Tayfun Gezgin, Christoph Etzien, Stefan Henkler, A. Rettberg
{"title":"Towards a Rigorous Modeling Formalism for Systems of Systems","authors":"Tayfun Gezgin, Christoph Etzien, Stefan Henkler, A. Rettberg","doi":"10.1109/ISORCW.2012.42","DOIUrl":"https://doi.org/10.1109/ISORCW.2012.42","url":null,"abstract":"The scope of this paper is collaborative, distributed safety critical systems which build up a larger scale system of systems (SoS). Systems participating in an SoS follow both global as well as individual goals, which may be contradicting. Both the global and local goals of the overall SoS may change over time. Hence, self-adaptive ness, i.e., reconfiguration of the SoS as a reaction on changes within its context is a major characteristic of this systems. The aim of this paper is to describe first steps towards a modeling formalism for SoS in a safety critical context. The challenge is to address on the one hand the required flexibility to adapt the system during run-time and on the other hand to guarantee that the system reacts still in a safe manner. To address these challenges, we propose an approach which guarantees that the system still reacts in a safe manner while adaption to uncertainty including context changes. This adaption has to be assumed as unsafe during design time. The key for having success is to define the interaction between the systems as well as its goals as basic elements of the design. Based on our former work, we propose a well-defined modeling approach for the interaction based on components as basic structural elements, the contract paradigm for the design of the interaction, and graph transformations, which addresses the adaptivity of system of systems. The component model is additionally explicitly enriched by goals, which supports so called evaluation functions to determine the level of target achievement.","PeriodicalId":408357,"journal":{"name":"2012 IEEE 15th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops","volume":"147 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114918954","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}
Jianqi Shi, Xin Ye, Liangyu Chen, Pei-qiang Zhang, Ningkang Jiang
{"title":"ESF - An Extensive Service Foundation from Internet of Things Perspective","authors":"Jianqi Shi, Xin Ye, Liangyu Chen, Pei-qiang Zhang, Ningkang Jiang","doi":"10.1109/ISORCW.2012.21","DOIUrl":"https://doi.org/10.1109/ISORCW.2012.21","url":null,"abstract":"The increasing interest in the Internet of Things (IoT) has brought lots of opportunities and challenges to researchers. Cyber-space and physical world are more and more amalgamated by smart devices with networking capability. Making appropriate adaptations to satisfy new processing requirements is necessary for the extensive service in such an environment. In this paper, we propose a three-layer architecture for IoT: the sensor layer, processing layer and mining layer. We adopt a new design approach for the information-processing layer which focuses on five aspects: exchanging data format, data entity design, the method invocation style, the event decoupling and massive data processing. Our approach has been applied to an environmental protection system which is being used in more than 200 monitoring stations in Shanghai. There are 7 kinds of environmental information to be monitored and more than 70 million data items to be processed by this system every day.","PeriodicalId":408357,"journal":{"name":"2012 IEEE 15th International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops","volume":"207 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126902531","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}