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Energy-Efficient Algorithms for Data Retrieval from Indexed Parallel Broadcast Channels
Sustainable Computing
  • A. R. Hurson, Missouri University of Science and Technology
  • Sahra Sedigh, Missouri University of Science and Technology
  • Michael Wisely
Abstract

Constraints on the energy, bandwidth, and connectivity of mobile devices and wireless communication medium complicate the timely and reliable access to public data. Energy is often the most stringent constraint, necessitating techniques that facilitate operation in energy-saving modes. Broadcasting, typically over parallel channels, has proven to be an effective method for dissemination of public data to mobile devices. However, the employment of parallel channels introduces challenges associated with channel switching and conflicts due to concurrent accesses to multiple data items that ultimately increase energy consumption and response time. The detrimental effects on energy consumption and response time can be alleviated by scheduling the retrieval of data items in an order that reduces the number of passes over the air channels and channel switching between the parallel channels. In this paper, several scheduling algorithms are proposed and analyzed that achieve the aforementioned objectives. To further improve energy consumption and response time, the scope of our scheduling algorithms has been enhanced by replication of popular data items. The proposed scheduling algorithms, both with and without replication, have been simulated, and simulation results are presented and analyzed. These results show that the proposed scheduling algorithms, compared to some heuristic based methods, have greater impact in reducing energy consumption and response time. This reduction is shown to be more pronounced with replication of data items.

Department(s)
Computer Science
Second Department
Electrical and Computer Engineering
Research Center/Lab(s)
Intelligent Systems Center
Keywords and Phrases
  • Broadcasting,
  • Energy Conservation,
  • Energy Efficiency,
  • Energy Management,
  • Energy Utilization,
  • Heuristic Algorithms,
  • Heuristic Methods,
  • Mobile Devices,
  • Query Processing,
  • Scheduling Algorithms,
  • Ubiquitous Computing,
  • Wireless Telecommunication Systems,
  • Algorithm/Protocol Design And Analysis,
  • Energy Efficient Algorithms,
  • Energy Saving Modes,
  • Parallel Broadcast Channel,
  • Reducing Energy Consumption,
  • Retrieval Models,
  • Stringent Constraints,
  • Wireless Communications,
  • Algorithms
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2016 Elsevier, All rights reserved.
Publication Date
6-1-2016
Publication Date
01 Jun 2016
Citation Information
A. R. Hurson, Sahra Sedigh and Michael Wisely. "Energy-Efficient Algorithms for Data Retrieval from Indexed Parallel Broadcast Channels" Sustainable Computing Vol. 10 (2016) p. 20 - 35 ISSN: 2210-5379
Available at: http://works.bepress.com/sahra-sedigh/33/