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소규모 유선/무선 네트워크에서 실시간 제어 메시지 전송방안
강홍구(Hongku Kang),김남곤(Namgon Kim),김종원(Jong-Won Kim) 한국정보기술학회 2021 한국정보기술학회논문지 Vol.19 No.6
Nowadays, there are significant interests in real-time remote control using a small sized wired/wireless networks, especially in the dangerous field such as battlefield and disaster scene. In real-time remote control, one of important factors is the delay of real-time control messages. While wired networks do not make a performance degradation in transmitting real-time control message, wireless networks make performance degradations in jitter of delay. In this paper, we proposed method to transmit real-time control message in small sized wired/wireless networks. The proposed method designed a wireless frame and a message transmission period and employed synchronized message transmission to transmit control message with fixed delay. The proposed method was applied to military unmanned system and evaluated performances by examinations. According to results of examinations, the proposed method reduced jitter of delay as 30% as that of conventional system.