Adaptive fragmentation for latency control and energy management in wireless real-time environments Conference

Rajan, D, Poellabauer, C. (2007). Adaptive fragmentation for latency control and energy management in wireless real-time environments . 158-168. 10.1109/WASA.2007.140

cited authors

  • Rajan, D; Poellabauer, C

authors

abstract

  • Wireless environments are typically characterized by unpredictable and unreliable channel conditions. In such environments, fragmentation of network-bound data is a commonly adapted technique to improve the probability of successful data transmissions and reduce the energy overheads incurred due to re-transmissions. The overall latencies involved with fragmentation and consequent re-assembly of fragments are often neglected which bear significant effects on the real-time guarantees of the participating applications. This work studies the latencies introduced as a result of the fragmentation performed at the link layer (MAC layer in IEEE 802.11) of the source device and their effects on end-to-end delay constraints of mobile applications (e.g., media streaming). Based on the observed effects, this work proposes a feedback-based adaptive approach that chooses an optimal fragment size to a) satisfy end-to-end delay requirements of the distributed application and b) minimize the energy consumption of the source device by increasing the probability of successful transmissions, thereby reducing re-transmissions and their associated costs. © 2007 IEEE.

publication date

  • December 1, 2007

Digital Object Identifier (DOI)

International Standard Book Number (ISBN) 10

International Standard Book Number (ISBN) 13

start page

  • 158

end page

  • 168