Power evaluation of 360 VR video streaming on head mounted display devices

Nan Jiang, Viswanathan Swaminathan, Sheng Wei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations

Abstract

Virtual reality (VR) video streaming with 360-degree views has become a trending video application recently. While providing the users with immersive video viewing experiences, the 360 video streaming introduces significantly higher overhead than the traditional 2D video streaming in both bandwidth and power consumption, due to the additional video bytes that must be transmitted and processed. While almost all the prior work in this domain has been focused on the bandwidth optimization, we for the first time investigate the power consequence of VR streaming on head mounted displays (HMDs). In particular, we build an end-to-end VR streaming system using DASH and WebVR technologies, which enables us to conduct empirical power measurements at runtime. In order to uncover the specific power impact caused by VR video streaming, we design eight controlled test cases with various streaming configurations and derive a quantitative power breakdown of the HMD through differential power analysis. Our evaluation and analysis results indicate that the VR streaming overhead accounts for 28.5% of the total power consumption on the HMD, with 18.4% for network transmission of the extra video bytes, 3.6% for the VR video decoding, and 6.5% for the VR view calculation, generation, and rendering. Our research findings quantify the room for improvement in VR video power consumption, based on which, we propose several power optimization strategies aiming to motivate further research in low power VR streaming.

Original languageEnglish (US)
Title of host publicationProceedings of the 27th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2017
PublisherAssociation for Computing Machinery, Inc
Pages55-60
Number of pages6
ISBN (Electronic)9781450350037
DOIs
StatePublished - Jun 20 2017
Externally publishedYes
Event27th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2017 - Taipei, Taiwan, Province of China
Duration: Jun 23 2017 → …

Publication series

NameProceedings of the 27th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2017

Other

Other27th ACM Workshop on Network and Operating Systems Support for Digital Audio and Video, NOSSDAV 2017
Country/TerritoryTaiwan, Province of China
CityTaipei
Period6/23/17 → …

All Science Journal Classification (ASJC) codes

  • Human-Computer Interaction
  • Computer Networks and Communications
  • Software

Keywords

  • Power evaluation
  • Video streaming
  • Virtual reality

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