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Log Management support for recovery in mobile computing Environment  [PDF]
J. C. Miraclin Joyce Pamila,K. Thanushkodi
Computer Science , 2009,
Abstract: Rapid and innovative improvement in wireless communication technologies has led to an increase in the demand for mobile internet transactions. However, internet access from mobile devices is very expensive due to limited bandwidth available on wireless links and high mobility rate of mobile hosts. When a user executes a transaction with a web portal from a mobile device, the disconnection necessitates failure of the transaction or redoing all the steps after reconnection, to get back into consistent application state. Thus considering challenges in wireless mobile networks, a new log management scheme is proposed for recovery of mobile transactions. In this proposed approach, the model parameters that affect application state recovery are analyzed. The proposed scheme is compared with the existing Lazy and Pessimistic scheme and a trade off analysis between the cost invested to manage log and the return of investment in terms of improved failure recoverability is made. From the analysis, the best checkpoint interval period that yields the best return of investment is identified.
A Tutorial of the Mobile Multimedia Wireless Sensor Network OMNeT++ Framework  [PDF]
Zhongliang Zhao,Denis Rosario,Torsten Braun,Eduardo Cerqueira
Computer Science , 2015,
Abstract: In this work, we will give a detailed tutorial instruction about how to use the Mobile Multi-Media Wireless Sensor Networks (M3WSN) simulation framework. The M3WSN framework has been published as a scientific paper in the 6th International Workshop on OMNeT++ (2013). M3WSN framework enables the multimedia transmission of real video sequence. Therefore, a set of multimedia algorithms, protocols, and services can be evaluated by using QoE metrics. Moreover, key video-related information, such as frame types, GoP length and intra-frame dependency can be used for creating new assessment and optimization solutions. To support mobility, M3WSN utilizes different mobility traces to enable the understanding of how the network behaves under mobile situations. This tutorial will cover how to install and configure the M3WSN framework, setting and running the experiments, creating mobility and video traces, and how to evaluate the performance of different protocols. The tutorial will be given in an environment of Ubuntu 12.04 LTS and OMNeT++ 4.2.
A NEW HIERARCHICAL TRANSACTION MODEL FOR MOBILE ADHOC NETWORK ENVIRONMENT
Vikram Bali,,Rajkumar Singh Rathore
International Journal on Computer Science and Engineering , 2010,
Abstract: Mobile Computing Environment poses its unique challenges to the existing Transaction models which are fail to solve. The main challenges of mobile computing environment are its heterogeneous environment, low bandwidth and power resources. The transaction must be able to handle frequent disconnection because mobile user can move anywhere. In this paper, I presented a transaction model for mobile adhoc network environment. In this hierarchical model transaction isperformed in distributed fashion by the nodes in a MANET. Basically three types of nodes in this transaction model-Captain, Player and Data Manager. Data manager is maintained into hierarchy-Global, Zonal and Local. Players play the role under the supervision of Captain. Mobile Nodes can access data directly with Local data Manager. The data manager is used maintaining the data and log for recovery.In the previous model for transaction there is no criterion for recovery, in this model I resolve this problem with hierarchical structure of data manager.
Effects Of Mobile Environment On Transaction Management: A Review
FAHMINA TARANUM,KHALEEL UR RAHMAN KHAN,MANIZA HIJAB
International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering , 2013,
Abstract: The development of technology, coupled with availability of sophisticated computing devices facilitatinganywhere, anytime access, have made mobile applications a very common feature. Mobile banking, mobile commerce being amongst them. Enforcement of data integrity and consistency, handling of concurrency, failure has become more magnified due to the environment being wireless and data being real time. Further issues of device mobility, bandwidth, latency, disconnections and resource constraints of the device itself cannot be ignored. Therefore transaction management and its related protocols gain significance. In this paper we make a comprehensive review of the effects of mobile environment on transaction management.
A Reinforcement Learning Based Framework for Prediction of Near Likely Nodes in Data-Centric Mobile Wireless Networks  [cached]
Chen Yingying,Wang Hui(Wendy),Zheng Xiuyuan,Yang Jie
EURASIP Journal on Wireless Communications and Networking , 2010,
Abstract: Data-centric storage provides energy-efficient data dissemination and organization for the increasing amount of wireless data. One of the approaches in data-centric storage is that the nodes that collected data will transfer their data to other neighboring nodes that store the similar type of data. However, when the nodes are mobile, type-based data distribution alone cannot provide robust data storage and retrieval, since the nodes that store similar types may move far away and cannot be easily reachable in the future. In order to minimize the communication overhead and achieve efficient data retrieval in mobile environments, we propose a reinforcement learning-based framework called PARIS, which utilizes past node trajectory information to predict the near likely nodes in the future as the best content distributee. Our framework can adaptively improve the prediction accuracy by using the reinforcement learning technique. Our experiments demonstrate that our approach can effectively and efficiently predict the future neighborhood.
A Reinforcement Learning Based Framework for Prediction of Near Likely Nodes in Data-Centric Mobile Wireless Networks  [cached]
Yingying Chen,Hui (Wendy) Wang,Xiuyuan Zheng,Jie Yang
EURASIP Journal on Wireless Communications and Networking , 2010, DOI: 10.1155/2010/319275
Abstract: Data-centric storage provides energy-efficient data dissemination and organization for the increasing amount of wireless data. One of the approaches in data-centric storage is that the nodes that collected data will transfer their data to other neighboring nodes that store the similar type of data. However, when the nodes are mobile, type-based data distribution alone cannot provide robust data storage and retrieval, since the nodes that store similar types may move far away and cannot be easily reachable in the future. In order to minimize the communication overhead and achieve efficient data retrieval in mobile environments, we propose a reinforcement learning-based framework called PARIS, which utilizes past node trajectory information to predict the near likely nodes in the future as the best content distributee. Our framework can adaptively improve the prediction accuracy by using the reinforcement learning technique. Our experiments demonstrate that our approach can effectively and efficiently predict the future neighborhood.
A Survey on Data and Transaction Management in Mobile Databases
D.Roselin Selvarani,T.N.Ravi
International Journal of Database Management Systems , 2012,
Abstract: The popularity of the Mobile Database is increasing day by day as people need information even on the move in the fast changing world. This database technology permits employees using mobile devices to connect to their corporate networks, hoard the needed data, work in the disconnected mode and reconnect to the network to synchronize with the corporate database. In this scenario, the data is being moved closer to the applications in order to improve the performance and autonomy. This leads to many interesting problems in mobile database research and Mobile Database has become a fertile land for many researchers. In this paper a survey is presented on data and Transaction management in Mobile Databases from the year 2000 onwards. The survey focuses on the complete study on the various types of Architectures used in Mobile databases and Mobile Transaction Models. It also addresses the data management issues namely Replication and Caching strategies and the transaction management functionalities such as Concurrency Control and Commit protocols, Synchronization, Query Processing, Recovery and Security. It also provides Research Directions in Mobile databases.
A survey on data and transaction management in mobile databases  [PDF]
D. Roselin Selvarani,T. N. Ravi
Computer Science , 2012, DOI: 10.5121/ijdms.2012.4501
Abstract: The popularity of the Mobile Database is increasing day by day as people need information even on the move in the fast changing world. This database technology permits employees using mobile devices to connect to their corporate networks, hoard the needed data, work in the disconnected mode and reconnect to the network to synchronize with the corporate database. In this scenario, the data is being moved closer to the applications in order to improve the performance and autonomy. This leads to many interesting problems in mobile database research and Mobile Database has become a fertile land for many researchers. In this paper a survey is presented on data and Transaction management in Mobile Databases from the year 2000 onwards. The survey focuses on the complete study on the various types of Architectures used in Mobile databases and Mobile Transaction Models. It also addresses the data management issues namely Replication and Caching strategies and the transaction management functionalities such as Concurrency Control and Commit protocols, Synchronization, Query Processing, Recovery and Security. It also provides Research Directions in Mobile databases.
Modelling Efficient Process Oriented Architecture for Secure Mobile Commerce Using Hybrid Routing Protocol in Mobile Adhoc Network
Chitra Kiran N,G Narendra Kumar
International Journal of Computer Science Issues , 2012,
Abstract: The proposed research work presents a novel approach of process oriented architecture for secure mobile commerce framework using uniquely designed hybrid mobile adhoc routing protocols using reactive and proactive type in real time test-bed. The research work discusses about deployment of mobile commerce which is one of the emerging trend in mobile applications with huge demands. Majority of the existing system lacks either QoS or efficient security protocol when it relates to secure mobile transaction due to the reason that development in wireless technology involved in m-commerce is still in its nascent stage. The real time test bed has been implemented with 20 Intel Atom processor with 32 bit OS establishing an adhoc network and by providing a random mobility to achieve any file type transfer from node to node. For the real-time set up purpose, the experiment is conducted in wireless infrastructure with mobility using G-based Linksys wireless router. Iteration of experiments conducted shows a satisfactory results. This research journal will provide insights with various parameters, security requirements, and concepts which is required in creating a robust model for secure m-commerce system.
A Framework for Next Generation Mobile and Wireless Networks Application Development using Hybrid Component Based Development Model  [PDF]
Ahmed Barnawi,M. Rizwan Jameel Qureshi,Asif Irshad Khan
Computer Science , 2012,
Abstract: The IP Multimedia Subsystems (IMS) that features in Next Generation Networks (NGN) offers the application developer (third party) abilities to map out applications over mobile telecommunication infrastructure. The IMS comes about with APIs useful for mobile application developers to create applications to meet end-users' demands and comply with the provider's infrastructure set up at the same time. Session Initiation Protocol (SIP) is a signaling protocol for this architecture. It is used for establishing sessions in IP network, making it an ideal candidate for supporting terminal mobility in to deliver the services with improved Quality of Services (QOS). The realization of IMS's virtues as far as software design is concerned is faced by lack of standardizations and methodologies throughout application development process. In this paper, we report on progress on ongoing research by our group toward putting together a platform as a testbed used for NGN application development. We examine a novel component based development model used for SIP based mobile applications. The developed model is to be used as framework for general purpose application development over the testbed. We apply this model on MObile Mass EXamination (MOMEX) system that is an application attracting the interest of educational authorities around the world due to its potential convenience.
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