DocumentCode :
2577290
Title :
Exploiting Our Computational Surroundings for Better Mobile Collaboration
Author :
Barreto, João ; Ferreira, Paulo ; Shapiro, Marc
Author_Institution :
Inesc-ID/Tech. Univ. of Lisbon, Lisbon
fYear :
2007
fDate :
1-1 May 2007
Firstpage :
110
Lastpage :
117
Abstract :
Mobile collaborative environments, being naturally loosely-coupled, call for optimistic replication solutions in order to attain the requirement of decentralized highly available access to data. However, such connectivity assumptions are also a decisive hindrance to the ability of optimistic replication protocols to rapidly guarantee consistency among the set of loosely-coupled replicas. This paper proposes the extension of conventional optimistic replication protocols to exploit the presence of extraneous nodes surrounding the group of replica nodes in an increasingly ubiquitous computational universe. In particular, we show that using such extra nodes as temporary carriers of lightweight consistency meta-data may significantly improve the efficiency of a replicated system; notably, it reduces commitment delay and conflicts, and allows more network-efficient propagation of updates. We support such a statement with experimental results obtained from a simulated environment.
Keywords :
groupware; mobile computing; consistency meta-data; mobile collaboration; optimistic replication protocols; replicated system; ubiquitous computational universe; Access protocols; Collaborative software; Collaborative work; Database systems; Mobile communication; Mobile computing; Online Communities/Technical Collaboration; Optical propagation; Propagation delay; Ubiquitous computing;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mobile Data Management, 2007 International Conference on
Conference_Location :
Mannheim
Print_ISBN :
1-4244-1241-2
Type :
conf
DOI :
10.1109/MDM.2007.24
Filename :
4417131
Link To Document :
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