• Information Technology
  • Human Resources
  • Careers
  • Giving
  • Library
  • Bookstore
  • Active Living
  • Continuing Education
  • Go Dinos
  • UCalgary Maps
  • UCalgary Directory
  • Academic Calendar
My UCalgary
Webmail
D2L
ARCHIBUS
IRISS
  • Faculty of Arts
  • Cumming School of Medicine
  • Faculty of Environmental Design
  • Faculty of Graduate Studies
  • Haskayne School of Business
  • Faculty of Kinesiology
  • Faculty of Law
  • Faculty of Nursing
  • Faculty of Nursing (Qatar)
  • Schulich School of Engineering
  • Faculty of Science
  • Faculty of Social Work
  • Faculty of Veterinary Medicine
  • Werklund School of Education
  • Information TechnologiesIT
  • Human ResourcesHR
  • Careers
  • Giving
  • Library
  • Bookstore
  • Active Living
  • Continuing Education
  • Go Dinos
  • UCalgary Maps
  • UCalgary Directory
  • Academic Calendar
  • Libraries and Cultural Resources
View Item 
  •   PRISM Home
  • Science
  • Science Research & Publications
  • View Item
  •   PRISM Home
  • Science
  • Science Research & Publications
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Efficient Broadcast Schedulers of Hierarchical Data Dissemination Systems

Thumbnail
Download
2005-792-23.pdf (14.10Mb)
2005-792-23.ps (34.98Mb)
Download Record
Download to EndNote/RefMan (RIS)
Download to BibTex
Author
Omotayo, Adesola
Hammad, Moustafa A.
Barker, Ken
Accessioned
2008-02-26T20:23:49Z
Available
2008-02-26T20:23:49Z
Computerscience
2005-07-18
Issued
2005-07-18
Subject
Computer Science
Type
unknown
Metadata
Show full item record

Abstract
With the increasing popularity of portable wireless devices and the need to access data anytime and anywhere, mechanisms to efficiently and effectively transmit information to wireless clients are of significant interest. Several research studies address broadcast scheduling algorithms for centralized systems. However, broadcast scheduling in hierarchical data dissemination systems are largely ignored. In these systems a primary server accepts updates that are broadcasted to secondary servers and then to wireless clients. This paper focuses on broadcast scheduling at the primary server side. First, we show that a straightforward broadcast scheduler that ignores clients' access patterns can provide participating clients with outdated information more than 80% of the time. Then, we propose three broadcast scheduling algorithms. The proposed algorithms primarily differ in how data broadcasts are guided at the primary and secondary servers. We present guidance mechanisms that are based on real and predicted clients' access patterns. We experimentally evaluate the proposed scheduling algorithms using simulation while running an extensive set of experiments. The performance study illustrates that the third proposed algorithm, which depends on predictive scheduling at both the primary and the secondary servers, provides the best performance in terms of the response time of the clients' requests and the reception of outdated information.
Notes
We are currently acquiring citations for the work deposited into this collection. We recognize the distribution rights of this item may have been assigned to another entity, other than the author(s) of the work.If you can provide the citation for this work or you think you own the distribution rights to this work please contact the Institutional Repository Administrator at digitize@ucalgary.ca
Corporate
University of Calgary
Faculty
Science
Doi
http://dx.doi.org/10.11575/PRISM/30306
Uri
http://hdl.handle.net/1880/45394
Collections
  • Science Research & Publications

Browse

All of PRISMCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

LoginRegister

Download Results

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

  • Email
  • SMS
  • 403.220.8895
  • Live Chat

Energize: The Campaign for Eyes High

Privacy Policy
Website feedback

University of Calgary
2500 University Drive NW
Calgary, AB T2N 1N4
CANADA

Copyright © 2017