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

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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Enhancing Performance of Multicast over Push-to-Talk over Cellular

PoC 멀티캐스트 성능향상 방안

  • Kim, Ki-Il (Department of Informatics, Gyeongsang National University)
  • Received : 2013.02.18
  • Accepted : 2013.04.30
  • Published : 2013.07.31
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Abstract

PoC (Push-to-Talk over Cellular) provides one-to-one as well as one-to-many communications with VoIP technology based on SIP over cellular networks. According to above property, PoC is considered as perscrptive technology for public protection for disaster relief networks. For this networks, group communication is the essential function. However, since current standardization process takes into general scenarios account without any consideration for mentioned networks, it have some problems in the point of adaptability. To solve above problem, in this paper, we propose how to reduce the overhead on the PoC server to reduce the transmission delay. Simulation results are shown to evaluate the improved performance.

PoC (Push-to-Talk over Cellular)는 이동통신망에서 SIP (Session Initiation Protocol) 기반의 VoIP (Voice over Internet Protocol) 기술을 이용하여 일-대-일 또는 일-대-다 통신을 지원하는 특징으로 인하여 재난망에서 이를 적용하기 위한 노력이 현재 시도중이다. 이러한 노력은 그룹 통신 지원이 핵심이며 이를 위한 표준화 제정이 진행중이다. 하지만, 현재 표준의 경우 재난망의 특징을 반영하지 않고 일반 PoC 서비스 중심의 그룹 통신을 지원하기 때문에 재난통신망 적용시 그룹이 특정 지역에 밀집한 경우 PoC 서버에 로드가 집중됨으로써 혼잡 및 이로 인한 지연이 길어지는 문제점이 존재한다. 이러한 문제점을 해결하기 위해서 본 논문에서는 특정 지역의 PoC 서버의 로드를 다수의 PoC 서버가 처리할 수 있도록 분산시킴으로써 강건성 및 전송 지연을 줄이기 위한 새로운 방안을 제안한다. 마지막으로 시뮬레이션을 통하여 성능 평가 결과를 제시한다.

Keywords

References

  1. OMA Push-to-Talk over Cellular (PoCv2.1), Push-to-Talk over Cellular Control Plane, Aug. 2011.
  2. OMA Push-to-Talk over Cellular (PoCv2.1), Push-to-Talk over Cellular User Plane, Aug. 2011.
  3. OMA Push-to-Talk over Cellular (PoCv2.1), PoC Multicast, Aug. 2011.
  4. Y. S. Hong, "Disaster Relief Technology and Standard in Foreign Country," Journal of TTA, No. 131. pp. 44 - 50, Sep. 2010.
  5. G. S. Heo, "OMA Standardization Trends," Journal of TTA, No. 98, pp. 110 - 114, 2005.
  6. D. Ma, W. Huang, Q. Sun, W. Li, C. Yin, Z. Shao, "Design and Realization of The PoC System with Short Session-Setup-Delay," in Proceeding of International Conference on Computer Science and Service System, pp. 1075 - 1078, Aug. 2012.
  7. D. Ma, W. Huang, W. Li, S. Chen, B. Luo, "Analyzing and Improving Session setup Latency of Push-to-Talk over Celluar," in Proceeding of International Conference on Wireless Communications, Networking and Mobile Computing (WiCOM), pp. 1 - 4, Sep. 2012.
  8. H. Jiang, A. K. Wong, V. W. Luk, X. Duan, J. Li, C. Ma, "Enhanced Floor Control Protocol for PoC Application in Data Packet Voice Communication," in Proceeding of IEEE Symposium on Computers and Communications, pp. 834 - 839, Jun. 2010.
  9. L. Lin, B. Du, S. Zhou, "The Network Model and Routing Algorithm for Scalable PoC System," in Proceeding of International Conference on Computer Application and System Modeling, pp. V3-407 - V3-412, Oct. 2010.
  10. T. Gebarowski, "A Hybrid Extension for IP Multicasting in Push-to-talk over Cellular Systems," International Journal of Electronics and Telecommunications, Vol. 58, No. 1, pp. 77-83, 2012.
  11. A. R. Hargrave and D. V. Sole, Multimedia Group Communication: Push-to-Talk over Cellular, Presence and List Management Concepts and Applications, John Wiley & Sons, Ltd., 2008.
  12. NS-2, http://www.isi.edu/nsnam/ns/