Journal of the Korea Institute of Information and Communication Engineering (한국정보통신학회논문지)

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Implementation of reliable transmission technique in jamming environment

방해전파 환경에서 신뢰성을 확보한 효과적 전송기법 구현

  • Hwang, Seong-kyu (Department of Information & Communication Engg., Chosun College of Science & Technology)
  • Received : 2017.10.19
  • Accepted : 2017.11.15
  • Published : 2017.12.31
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Abstract

Recent wireless communications using the unlicensed band have been on the rise and the range of use is increasing. The license-exempted band is a prerequisite for accepting interference between telecommunication equipment. In particular, the interference phenomenon of Bluetooth, wireless LAN, and RFID (Radio Frequency Identification) using the 2.4 GHz band is getting serious. In such urban areas, the wireless transmission medium may be in a bad state. There are roughly two ways to make effective transmission in this environment. The first is the IEEE 802.11 RTS / CTS method and the second is the frame fragmentation method. In this paper, it is difficult to transmit a frame over a certain size in a jamming environment due to the interference of the wireless environment. In this environment, we implement a frame division transmission scheme that guarantees effective transmission and reliability by dividing a frame into smaller units in order to perform reliability transmission and efficient transmission.

비면허 대역(Unlicensed)을 사용한 최근 무선통신이 증가하고 있으며 사용범위도 점차 넓어지고 있다. 비면허 대역은 통신 장비 간에 간섭을 용인하는 전재조건과 비면허통신 증가로 주파수 중첩과 간섭 현상이 증가하고 있다. 특히 2.4GHz 대역을 사용하는 블루투스, 무선랜, 무선식별 시스템(RFID)의 간섭 현상은 심각해지고 있다. 이러한 환경의 도심지에서는 무선 전송매체 상태가 간섭과 방해전파의 환경이 대부분일 것이다. 방해전파환경에서 효과적 전송을 할 수 있는 방법은 대략 2가지로 생각할 수 있다. 첫 번째는 IEEE 802.11의 RTS/CTS방식이 있고 두 번째로는 프레임 분할(fragmentation)방식이 있다. 본 논문에서는 방해전파 환경에서 일정크기 이상의 프레임을 전송할 경우 무선 환경의 간섭으로 전송이 어려워진다. 이러한 환경에서 신뢰성 전송과 효율적 전송을 하기 위해 프레임을 일정한 작은 단위로 분할하여 전송하여 효과적 전송과 신뢰성을 확보한 프레임분할 전송기법을 구현하여 확인하였다.

Keywords

References

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