The main contributions of this paper are:
Evaluation of the performance of multi-hop communication inside the human body in terms of energy consumption based on the IEEE 802.15.6 channel model.
Consideration of the mobile scenario of BSNs and proposal of an adaptive power control scheme.
Introduction of the dynamic topology of the network. Provision of the TDMA frame and schedules which is a centrally controlled TDMA-based MAC for energy saving. Control messages are transmitted in a single-hop way in both the uplink and downlink direction while the data messages in the uplink direction are transmitted in a multi-hop way.