RObust Header Compression (ROHC) performance for multimedia transmission over 3G/4G wireless networks

Frank H P Fitzek, Stephan Rein, Patrick Seeling, Martin Reisslein

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

RObust Header Compression (ROHC) has recently been proposed to reduce the large protocol header overhead when transmitting voice and other continuous media over IP based protocol stacks in wireless networks. In this paper we evaluate the real-time transmission of GSM encoded voice and H.26L encoded video with ROHC over a wireless link. For the voice transmission we examine the impact of ROHC on the consumed bandwidth, the voice quality, and the delay jitter in the voice signal. We find that for a wide range of error probabilities on the wireless link, ROHC roughly cuts the bandwidth required for the transmission of GSM encoded voice in half. In addition, ROHC improves the voice quality compared to transmissions without ROHC, especially for large bit error probabilities on the wireless link. The improvement reaches 0.26 on the 5-point Mean Opinion Score for a bit error probability of 10 -3. For the video transmission we examine the impact of ROHC on the consumed bandwidth. We find that the bandwidth savings with ROHC depend on the quantization scale used for the video encoding and the video content and ranges between 5-40% for typical scenarios.

Original languageEnglish (US)
Pages (from-to)23-41
Number of pages19
JournalWireless Personal Communications
Volume32
Issue number1
DOIs
StatePublished - Jan 1 2005

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Keywords

  • Bandwidth savings
  • Internet Protocol
  • Robust header compression
  • Subjective voice quality
  • Video transmission
  • Wireless links

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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