The objective of 15.6 is to define new physical
(PHY) and media access control (MAC) layers for wireless BAN
(WBAN). This paper introduces a trend of R&D for WBAN and
an overview of standardization in IEEE802.15.6. Some critical
and future works are suggested. A BAN must be a major
successful system to achieve both ubiquitous medical service to
solve medical crisis and global business to create a new market in
medical ICT.