WBAN 환경에서 응급 정보의 안정적 전송을 위한 프로토콜 설계 및 구현

• Published in: (사)디지털산업정보학회 논문지, 6(4) Vol. 6; no. 4; pp. 57 - 65
• Main Authors: 이동호, 왕종수, Lee, Dong Ho, Wang, Jong Soo
• Format: Journal Article
• Language: Korean
• Published: (사)디지털산업정보학회 01.12.2010
• Subjects: 컴퓨터학; WBAN; Superframe; Simulation; GPP; GTS
• ISSN: 1738-6667; 2713-9018

Application of WBAN technology in medical field facilitates the prevention of diseases by collecting the vital signs remotely. It also enables to prevent the accidental emergency situation in advance plus long-tem monitoring of patients with chronic diseases such as heart diseases, hypertension, or the elderly and infirm. For emergency patients, major vital signal information collected by the 'Sensing' should have the top priority and such information should be transferred as promptly as possible without competition. In addition, when an emergency occurs to a patient, a priority mechanism is necessitated for a urgent message to get through to the final destination. However, LR-WPAN IEEE 802.15.4 technology does not consider such emergency message handling features. To deal with aforementioned issues, the IEEE 802.15.4 super frame protocol structure has been designed for stable transfer of emergency information in WBAN environment in this study, and alternation to super frame structures have been made, allowing GTS(Guaranteed Time Slot) can be used first at CFP (Contention Free Period) by reserving the resources in advance and prioritize the emergency signals. NS-2 has been utilized for the performance test and analysis.