dc.contributor.author | Finne, Arild | |
dc.contributor.author | Trædal, Erik | |
dc.date.accessioned | 2007-06-26T14:00:21Z | |
dc.date.issued | 2006 | |
dc.identifier.uri | http://hdl.handle.net/11250/137150 | |
dc.description | Masteroppgave i informasjons- og kommunikasjonsteknologi 2006 - Høgskolen i Agder, Grimstad | en |
dc.description.abstract | Tens of millions of users have personal handheld devices with several network interfaces built-in, and the
number of users and of network interfaces included are only increasing. This growth suggests a need for
new methods to disseminate data to multiple clients, and cyclic broadcast is one approach. We do a
survey on the various data management protocols that describe how to broadcast the data, and the
concurrency control protocols that make sure all access to the database is consistent. The various data
management and concurrency control techniques deals with the restrictions in asymmetric broadcast
environments and improves the performance. As part of the survey, we made a simulation platform and
implemented several data management techniques and four concurrency protocols, BCC-TI, FBOCC,
PVTO and STUBcast. We also implemented a technique we call “partial restart” into FBOCC. Simulation
results shows nearly a 30% decrease in transaction execution time when the transaction length is 6. The
survey and the simulations helped us to make a qualitative characterization framework, which categorize
the protocols based on the environments they apply to and qualities they possess. We offer the source
code to the simulation models and the protocols we implemented which can be used as a base to
implement new protocols. | en |
dc.format.extent | 789155 bytes | |
dc.format.mimetype | application/pdf | |
dc.language.iso | eng | en |
dc.publisher | Høgskolen i Agder | |
dc.publisher | Agder University College | |
dc.subject | Concurrency Control | en |
dc.subject | Data Management | en |
dc.subject | Mobile Computing | en |
dc.subject | Data Dissemination | en |
dc.subject | Data Broadcast | en |
dc.subject.classification | IKT590 | |
dc.title | Data management and concurrency control in broadcast based asymmetric environments | en |
dc.type | Master thesis | en |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400::Informasjons- og kommunikasjonsvitenskap: 420::Kommunikasjon og distribuerte systemer: 423 | |
dc.subject.nsi | VDP::Matematikk og naturvitenskap: 400::Informasjons- og kommunikasjonsvitenskap: 420::Databaser og multimediasystemer: 428 | |