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A Real Time Optimistic Strategy to achieve Concurrency Control in Mobile Environments Using On-demand Multicasting

Salman Abdul Moiz, Lakshmi Rajamani
2010 International Journal of Wireless & Mobile Networks  
In this paper an optimistic concurrency control strategy using on-demand multicasting is proposed for mobile database environments which guarantees consistency and introduces application-specific conflict  ...  Most of the approaches use locking mechanisms to achieve concurrency control. However this leads to increase in blocking and abort rate.  ...  This method is known to be more efficient than the on-demand method in a mobile database environment.  ... 
doi:10.5121/ijwmn.2010.2212 fatcat:qhvumpf6x5hurjmo6scozbj7du

Commit Protocols in Mobile Environments: Design & Implementation

Salman Abdul Moiz, Lakshmi Rajamani, Supriya N.Pal
2010 International Journal of Database Management Systems  
Most of the approaches use locking mechanisms to achieve concurrency control. This leads to increase in blocking and abort rate in mobile environments.  ...  However the dynamic timer adjustment strategies may use locking mechanism to efficiently implement concurrency control.  ...  To achieve concurrency control, two phase locking protocol was used in the traditional environment.  ... 
doi:10.5121/ijdms.2010.2310 fatcat:cvrntc7zxzgbxgmbvg26umc5ya

A Survey on Data and Transaction Management in Mobile Databases

D Roselin Selvarani
2012 International Journal of Database Management Systems  
The survey focuses on the complete study on the various types of Architectures used in Mobile databases and Mobile Transaction Models.  ...  In this paper a survey is presented on data and Transaction management in Mobile Databases from the year 2000 onwards.  ...  In [32] , an optimistic concurrency control strategy using on-demand multicasting is proposed that guarantees consistency and introduces application-specific conflict detection and resolution strategies  ... 
doi:10.5121/ijdms.2012.4501 fatcat:hz6dj72yrzev3cvfdqkphlmmci

Optimistic replication

Yasushi Saito, Marc Shapiro
2005 ACM Computing Surveys  
This paper surveys optimistic replication algorithms that allow replica contents to diverge in the short term, in order to support concurrent work practices and to tolerate failures in low-quality communication  ...  Optimistic replication techniques are different from traditional "pessimistic" ones.  ...  Acknowledgements We thank our anonymous reviewers, as well as the following people for their valuable feedback on early versions of this paper: Miguel Castro, Yek Chong, Svend Frølund, Christos Karamanolis  ... 
doi:10.1145/1057977.1057980 fatcat:e3uc7nrlyfc25mazo7qlwt6kge

Mobile computing and databases-a survey

D. Barbara
1999 IEEE Transactions on Knowledge and Data Engineering  
This paper is an effort to survey these techniques and to classify this research in a few broad areas.  ...  In the past few years, there has been a tremendous surge of research in the area of data management in mobile computing.  ...  The execution model uses optimistic concurrency control [43] . As in the previous techniques, a transaction is executed in the mobile client and no partial execution is visible on the servers.  ... 
doi:10.1109/69.755619 fatcat:rpe3sxqopfaald3lfllddzghsa

Wireless video applications in 3G and beyond

M. Etoh, T. Yoshimura
2005 IEEE wireless communications  
For real-time videoconferencing over the circuit-switched network, we use 3G-324M for error control.  ...  , whereas a combination of Internet Engineering Task Force (IETF) standards, such as Real-Time Transport Protocol (RTP), will be used over mobile networks.  ...  Since then, he was engaged in research on mobile streaming media technology, and participated in IETF and 3GPP standardization.  ... 
doi:10.1109/mwc.2005.1497860 fatcat:ytv3hyew3naypctzpuq24ykqdu

A Novel Coordinated Edge Caching with Request Filtration in Radio Access Network

Yang Li, Yuemei Xu, Tao Lin, Xiaohui Wang, Song Ci
2013 The Scientific World Journal  
We achieve this goal in this paper with a novel caching scheme, which reduces the repeating traffic by request filtration and asynchronous multicast in a RAN.  ...  So it is crucial to manage such massive microcaches to store the contents in a coordinated manner, in order to increase the overall mobile network capacity to support more number of requests.  ...  However, since our test cannot simulate the real mobile network environment, we only collect data for different filtration interval (i.e., filter per 50 requests and per 300 requests) to analog the different  ... 
doi:10.1155/2013/654536 pmid:24459440 pmcid:PMC3891227 fatcat:wvbwgl6x65b33jqqqt526dvwuy

Middleware for Dependable Computing

Qilin Li, Wei Zhen, Mingtian Zhou
2008 2008 International Conference on Embedded Software and Systems Symposia  
In this paper, we examine some key issues of dependable middleware systems, introduce several basic concepts related to dependable middleware, present a detailed of review of the major dependable middleware  ...  Distributed systems often face some challenges, such as node failure, object crash, network partition, value fault in applications, and so on.  ...  The replicas have to apply the updates in an order that results in consistent state [3] . One strategy for achieving this is totally ordered.  ... 
doi:10.1109/icess.symposia.2008.50 fatcat:xgh4yqx5uzgpfnxisp3flxbtpm

Multipoint communication: a survey of protocols, functions, and mechanisms

C. Diot, W. Dabbous, J. Crowcroft
1997 IEEE Journal on Selected Areas in Communications  
This paper surveys protocol functions and mechanisms for data transmission within a group, from multicast routing problems up to end-to-end multipoint transmission control.  ...  Group communication supports information transfer between a set of participants. It is becoming more and more relevant in distributed environments.  ...  Other problems, which are typical to reliable multicast in mobile environments, have been identified by Acharya [31], [32] . • When the source is a mobile host, then a copy of the packet may not reach  ... 
doi:10.1109/49.564128 fatcat:6gre3yoktvaknoilqj7bomi5um

S-UMTS access network for broadcast and multicast service delivery: the SATIN approach

K. Narenthiran, M. Karaliopoulos, B. G. Evans, W. De-Win, M. Dieudonne, P. Henrio, M. Mazzella, E. Angelou, I. Andrikopoulos, P. I. Philippopoulos, D. I. Axiotis, N. Dimitriou (+3 others)
2004 International Journal of Satellite Communications And Networking  
The potential of advanced coding schemes such as the layered coding technique to tackle the channel variations in broadcast/ multicast environment is outlined.  ...  Based on the channel selection and the point-to-multipoint service nature, we define a generic radio resource management (RRM) strategy that takes into account both QoS and GoS requirements.  ...  ACKNOWLEDGEMENTS The authors would like to thank all colleagues that contributed to the SATIN project and directly or indirectly provided inputs to this paper.  ... 
doi:10.1002/sat.776 fatcat:gvw63ifewjboxfhc3l47papz7e

A Comprehensive Review of Enhancements and Prospects of Fast Handovers for Mobile IPv6 Protocol

Muhammad Mohtasim Sajjad, Dhammika Jayalath, Carlos J. Bernardos
2019 IEEE Access  
Many of these enhancements focus on the baseline FMIPv6 specification, while others aim to enhance its operation by adding support features, such as mobile multicast, vertical handovers, quality of service  ...  This paper aims to provide a systematic review of FMIPv6 enhancements in order to gain insight into its advantages as well as its shortcomings.  ...  certain scenarios such as, for real-time applications and high mobility.  ... 
doi:10.1109/access.2018.2887146 fatcat:d72grho4hjdnhabvniupxarj7a

Floor control for multimedia conferencing and collaboration

Hans-Peter Dommel, J.J. Garcia-Luna-Aceves
1997 Multimedia Systems  
The differences to session control, as well as concurrency control and access control are elicited.  ...  User-related aspects such as floor presentation, assignment, and the timely stages of floor-controlled interaction in relation to user-interface design are also presented.  ...  This work was supported in part by the Office of Naval Research (ONR) under contract N-00014-92-J-1807.  ... 
doi:10.1007/s005300050040 fatcat:uawclq7wszerhkszyoxjek5qpi

Query Management for Efficient Data Access in Wireless Environment

Seema Verma, Author Rakhee, Savita Kumari
2011 International Journal of Computer Applications  
To retrieve such broadcasted data mobile client submit a query to broadcast channel and get responded in sequential manner. Hence query plays central role in wireless communication.  ...  The queries evoked in wireless environment are much more complex and varied than that in traditional tethered environment.  ...  She thanks faculty and staff there for extending help to prepare this paper.  ... 
doi:10.5120/3528-4807 fatcat:utk7fg6iyfgqvecchppzswckmy

Workspace awareness for distributed teams [chapter]

Johann Schlichter, Michael Koch, Martin Bürger
1998 Lecture Notes in Computer Science  
Research in distributed problem solving in the last years focused on distributed applications which cooperate to accomplish a task.  ...  Another level of distributed problem solving is that of human teams which are distributed in space and cooperate in solving a problem.  ...  Concurrency control mechanisms may be categorized into pessimistic and optimistic approaches.  ... 
doi:10.1007/bfb0027107 fatcat:6wc6j7tcyvfbzfjvkzthrwouee

RADcast: Enabling Reliability Guarantees for Content Dissemination in Ad Hoc Networks

B. Xing, S. Mehrotra, N. Venkatasubramanian
2009 IEEE INFOCOM 2009 - The 28th Conference on Computer Communications  
We implement RADcast on mobile devices inside a middleware and determine its feasibility.  ...  1998 Authorized licensed use limited to: Univ of Calif Irvine.  ...  We also implement RADcast on mobile devices and determine its feasibility in real settings. In the next section, we overview the design philosophy of RADcast.  ... 
doi:10.1109/infcom.2009.5062122 dblp:conf/infocom/XingMV09 fatcat:aty3tagz6ngtnjjatuqdfcx4ue
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