The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
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WBAN Service Quality Optimization Design Using Error Correction Technique

에러교정기법을 이용한 WBAN 서비스품질 최적화 설계

  • Lee, Jung-Jae (Dept. of computer information sciences, Songwon University)
  • 이정재 (송원대학교 컴퓨터정보학과)
  • Received : 2019.07.17
  • Accepted : 2019.08.15
  • Published : 2019.08.31
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Abstract

The power consumption of wearable sensors and electrocardiogram regulators should be very low to extend the network lifetime and anticipated QoS( : Quality of Service) control such as error correction and authentication of data processed by WBAN( : Wireless Body Area Network) nodes is important. Therefore, QoS control is the most urgent concern to implement WBAN in health monitoring regulations. For optimal QoS control, we compare the energy efficiency and the average number of transmissions with IEEE 802.15.6 and the error correction method considering energy efficiency. The performance of the proposed error correction technique shows that the energy efficiency and the transmission rate are improved by adjusting the coding rate appropriately using the channel estimation.

웨어러블 센서, 심전도조정기의 전력 소비는 네트워크 수명을 늘리기 위해 매우 낮아야 하며 WBAN노드에서 처리하는 데이터의 에러교정 및 인증등의 예상되는 서비스품질 제어는 중요하다. 따라서 서비스품질제어는 건강모니터링규정에서 WBAN을 구현하는 데 있어 가장 긴급한 관심사이다. 최적의 QoS제어를 위해 에너지 효율을 고려한 에러교정기법과 IEEE 802.15.6과 성능을 에너지효율 및 평균전송갯수면에서 비교평가 한다. 제안된 에러교정기법의 성능은 채널 추정을 이용하여 부호화율을 적절히 조절함으로써 에너지 효율 및 전송율이 향상됨을 보인다.

Keywords

KCTSAD_2019_v14n4_657_f0001.png 이미지

그림 1. IEEE 802.15.6 MAC 프레임 구조. Fig. 1. The MAC frame structure in IEEE 802.15.6.

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그림 2. 물리계층프로토콜데이터단위 구조 Fig. 2. Physical-Layer protocol data unit structure

KCTSAD_2019_v14n4_657_f0003.png 이미지

그림 3. 제안된 에러교정기법. Fig. 3. The Proposed of error correction technique.

KCTSAD_2019_v14n4_657_f0004.png 이미지

그림 4 상수 d2nd 에서 에너지 효율 Fig. 4. Energy efficiency with constant d2nd

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그림 5. 상수 d2nd에서 평균전송갯수. Fig. 5. Average number of transmission with constant d2nd.

표 1. Weldon’s ARQ ni의 프레셋 개수 Table 1. Preset number of Weldon’s ARQ ni

KCTSAD_2019_v14n4_657_t0001.png 이미지

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