IEEE 802.15.4 기반 WBAN의 공존 문제 완화 기법

Abstract

ABSTRACT WBAN(Wireless Body Area Network) operating around the human body aims at medical and non-medical service at the same time. and it is the short-range communication technology requiring lo w-power, various data rate and high reliability. Various studie s is performing for IEEE 802.15.4, because IEEE 802.15.4 can provide high compatibility for operate WBAN among communication standa rd satisfiable these requirements. Meanwhile, in the case of coexi sting many IEEE 802.15.4-based WBAN, signal interference and co llision are the main cause that is decreasing data reliability. but IEE E 802.15.4 Standard does not consider about coexistence of many networks. so it needs improvement. In this paper, To solve abou t this problem, identify coexistence problem of IEEE 802.15.4-b ased WBAN by preliminary experiments. and propose a scheme to mitiga te the reliability decrease at multiple coexistence WBAN. The proposed scheme can be classified in two steps. The first step is avoidance to collision on the CFP through improving data tra nsmission. The second step is mitigation collision through converting chan nel access method. Proposed scheme is verified the performance by performing comparison experiment with Standard-based WBAN.