Energy-Efficient Retransmission Strategies Under Variable TDMA Scheduling in Body Area Networks

The authors consider a Body Area Network (BAN) setting in which sensor nodes send data to a common hub regularly on a TDMA basis, as defined by the emerging IEEE 802.15.6 BAN standard. Their previous work has established the benefits of variable TDMA scheduling in this setting, where the order of communication with nodes in each TDMA round is determined on the fly by the hub, based on the actual outcomes (success or failure) of their recent transmissions. This technique takes into account the very slow fading nature of wireless channels in BANs, and can minimize the expected rate of transmission losses merely by ordering nodes according to their most recent channel state information, without any additional energy overhead.

Provided by: NICTA Topic: Mobility Date Added: Jul 2011 Format: PDF

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