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 VoIP Module for Embedded System

임베디드 시스템을 위한 VoIP 모듈 구현

  • 김정원 (신라대학교 컴퓨터정보공학부)
  • Published : 2004.12.01
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Abstract

This paper designs and implements a VoIP module for embedded system. Many other VoIP modules for desktop environment has widely implemented but the one for embedded system is not prevalent yet. The implemented VoIP module uses the OpenH.323 and is operated on the WinCE PDA. We use the TCP-friendly adaptation for congestion control. The experiment results show smooth communication but a little noise. Future works include the minimization of noise.

본 논문에서는 임베디드 시스템을 위한 VoIP 모듈을 설계하고 구현한다. 기존 데스크탑용VoIP(Voice of Internet Protocol) 모듈의 구현을 활발하지만 임베디드 시스템을 위한 VoIP 구현은 많지 않다. 구현된 VoIP 모듈은 OpenH.323 표준을 이용하여 설계되었으며 WinCE 가 탑재된 PDA상에서 구동된다. 구현된 시스템은 혼잡 제어 기법으로 TCP-friendly adaptation 알고리즘을 사용한다. 실험결과 약간의 잡음이 있지만 음성 통신은 원활히 이루어졌으며 향후 연구과제는 잡음의 최소화이다.

Keywords

References

  1. J-C. Bolot, A.V Garcia, 'Control mechanishms for packet audio in the Internet' Proc. IEEE INFOCOM'96, April 1996
  2. C. Padhye, K.J. Chrstensen and W. Moreno, 'A new adaptive FEC loss control algorithm for voice over IP applications', IEEE IPCCC'OO, 2000
  3. Dorgham Sisalem, 'End-to-end quality of service control using adaptive applications', IFIP, 1997
  4. J-C. Bolot, T. Turletti, 'Experience with control mechanisms for packet video in the internet', INRIA, France, 1998
  5. Dorghan Sisalem, Henning Schulzrinne, 'The loss-dely based adjustment algorithm: A TCP-friendly adaptation scheme', GMD Fokus, Berlin, 1998
  6. Jitendra Padhye, Jim Kurose, Don Towsley, Rajeev Koodli, A Model Based TCP-Friendly Rate Control Protocol, Dept. of Computer Science, UMass, 1999
  7. Dorgham Sisalem, Adam Wolisz, Towards TCP-Friendly Adaptive Multimedia Applications Based on RTP , IEEE Symposium on Computers and Communications, 1998
  8. Thierry Turletti, Christian Huitema, Videoconferencing on the Internet, IEEE/ACM Transactions on Networking, Vol. 4, No. 3, June 1996
  9. JongWon Kim, Young-Gook Kim, TCP-Friendly Internet Video Streaming Employing Variable Frame-Rate Encoding and Interpolation , IEEE, 2000
  10. Jamshid Mahdavi, Sally Floyd, TCP-Friendly Unicast Rate-Based Flow Control, Pittsburgh Supercomputing Center (PSC), Carnegie Mellon, January 1997
  11. Dorgham Sisalem, 'End-to-end quality of service control using adaptive applications', IFIP, 1997
  12. J-C. Bolot, T. Turletti, 'Experience with control mechanisms for packet video in the internet', INRIA, France, 1998
  13. Dorghan Sisalem, Henning Schulzrinne, 'The loss-dely based adjustment algorithm: A TCP-friendly adaptation scheme', GMD-Fokus, Berlin, 1998
  14. Jitendra Padhye, Jim Kurose, Don Towsley, Rajeev Koodli, A Model Based TCP-Friendly Rate Control Protocol , Dept. of Computer Science, UMass, 1999