Topology-aware Packet Size and Forward Rate for Energy Efficiency and Reliability in Dynamic Wireless Body Area Networks

The sensors attached on/in a person are moved since human body frequency changes their activity, therefore in wireless body areanetworks, nodal mobility and non-line-of-sight condition will impact on performance of networks such as energy efficiency and reliablecommunication. We then proposed schemes which study on forwarding decisions against frequent change of topology and channelconditions to increase reliable connections and improve energy efficiency. In this work, we control the size of packets, forwarding ratebased on ratio of input links and output links at each node. We also robust the network topology by extending the peer to peer IEEE802.15.4-based. The adaptive topology from chain-based to grid-based can optimal our schemes. The simulation shows that theseapproaches are not only extending network lifetime to 48.2 percent but also increase around 6.08 percent the packet delivery ratio.
The “hot spots” problem is also resolved with this approach.