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Optimizing Transmission and Shutdown for Energy-Efficient Real-Time Packet Scheduling in Clustered Ad Hoc Networks
Real-Time and Embedded Systems Lab (mLAB)
  • Sofie Pollin, IMEC, K.U. Leuven
  • Bruno Bougard, IMEC, K.U. Leuven
  • Rahul Mangharam, University of Pennsylvania
  • Francky Catthoor, IMEC, K.U. Leuven
  • Ingrid Moerman, IMEC, Ugent
  • Ragunathan Rajkumar, Carnegie Mellon University
  • Liesbet Van der Perre, IMEC
Document Type
Journal Article
Date of this Version
1-1-2005
Comments
Suggested Citation:
Sofie Pollin, Bruno Bougard, Rahul Mangharam, et al., “Optimizing Transmission and Shutdown for Energy-Efficient Real-time Packet Scheduling in Clustered Ad Hoc Networks,” EURASIP Journal on Wireless Communications and Networking, vol. 2005, no. 5, Article ID 617271, 14 pages, 2005. doi:10.1155/WCN.2005.698
Abstract

Energy efficiency is imperative to enable the deployment of ad hoc networks. Conventional power management focuses independently on the physical orMAC layer and approaches differ depending on the abstraction level. At the physical layer, the fundamental tradeoff between transmission rate and energy is exploited, which leads to transmit as slow as possible. At MAC level, power reduction techniques aim to transmit as fast as possible to maximize the radios power-off interval. The two approaches seem conflicting and it is not obvious which one is the most appropriate.We propose a transmission strategy that optimally mixes both techniques in a multiuser context.We present a cross-layer solution considering the transceiver power characteristics, the varying system load, and the dynamic channel constraints. Based on this, we derive a low-complexity online scheduling algorithm. Results considering an M-ary quadrature amplitude modulation radio show that for a range of scenarios a large power reduction is achieved, compared to the case where only scaling or shutdown is considered.

Keywords
  • Energy-Efficient Wireless Systems
Citation Information
Sofie Pollin, Bruno Bougard, Rahul Mangharam, Francky Catthoor, et al.. "Optimizing Transmission and Shutdown for Energy-Efficient Real-Time Packet Scheduling in Clustered Ad Hoc Networks" (2005)
Available at: http://works.bepress.com/rahul_mangharam/11/