1 23 Telecommunication Systems Modelling, Analysis, Design and Management ISSN 1018-4864 Volume 58 Number 2 Telecommun Syst (2015) 58:153-164 DOI 10.1007/s11235-014-9897-0 A survey: energy exhausting attacks in MAC protocols in WBANs Minho Jo, Longzhe Han, Nguyen Duy Tan & Hoh Peter In