  Blocking is one of the most important challenges in exploiting
millimeter-wave for fifth-generation (5G) cellular communication systems.
Compared to blockages caused by buildings or terrains, human body blockage
exhibits a higher complexity due to the mobility and dynamic statistics of
humans. To support development of outdoor millimeter-wave cellular systems, in
this paper we present a novel 3D physical model of human body blockage. Based
on the proposed model, the impact of human body blockage on frame-based data
transmission is discussed, with respect to the system specifications and
environment conditions.
