Authors : Chang Woo Choi, Hyoeun Kang and Yoonyoung Hong (Pusan National University, Republic of Korea); Yongsu Kim (SmartM2M, Republic of Korea); Guem Bo Kim and Aji Teguh Prihatno (Pusan National University, Republic of Korea); Jang Hyun Ji (SmartM2M, Republic of Korea); Seung Do Hong (LG Electronics, Republic of Korea); Ho Won Kim (Pusan National University, Republic of Korea)