Medical Engineering & Physics
Volume 30, Issue 3 , Pages 293-298, April 2008

Delay-bounded semi-reliable vital sign transmission protocol for mobile telemedicine over a CDMA 1× EV-DO network

  • Tong H. Lee

      Affiliations

    • Center for Emergency Medical Informatics, Signal Processing Research Center, Human Identification Research Center, Yonsei University, Republic of Korea
    • ,
  • Sun K. Yoo

      Affiliations

    • Department of Medical Engineering, Brain Korea 21 Project for Medical Science, Yonsei University College of Medicine, Sudaemoon-gu, Shinchon-dong 134, Seoul 120-752, Republic of Korea
    • Corresponding Author InformationCorresponding author. Tel.: +82 2 2228 1919; fax: +82 2 363 9923.

Received 30 October 2006; received in revised form 9 April 2007; accepted 19 April 2007. published online 13 June 2007.

Abstract 

The reliable and instant transmission of vital signs is important for remote time-critical patient care through a telemedicine system. However, sometimes the reliability and instantaneity conditions cannot be satisfied simultaneously under a high-noise mobile network, because they are reciprocal to each other. In this paper, the vital sign transmission protocol (VSTP) running over a CDMA 1× EVDO (Code Division Multiple Access 1× Evolution Data Only) mobile network is proposed to comply with both the reliability and instantaneity requirements. The switching buffer management scheme is combined with a hybrid error control scheme, consisting of forward error correction (FEC) and automatic repeat request (ARQ). The CDMA 1× EVDO mobile network is modeled by two states using the Markov wireless channel model to test transmission performance under diverse network conditions. Throughout the noisy environment simulation, the performance of the VSTP is compared with the Transmission Control Protocol (TCP) and User Datagram Protocol (UDP) to demonstrate its efficacy over error-prone mobile network.

Keywords: Vital sign transmission protocol, Mobile network

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PII: S1350-4533(07)00084-7

doi:10.1016/j.medengphy.2007.04.012

Medical Engineering & Physics
Volume 30, Issue 3 , Pages 293-298, April 2008

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