Content Delivery | Ramesh Govindan

We have done prior work in optimizing video and web content delivery over cellular and the wide area network.

Sigcomm
Dragonfly: Higher Perceptual Quality For Continuous 360° Video Playback

Ehab Ghabashneh, Chandan Bothra, Ramesh Govindan, and 2 more authors

In Proceedings of the ACM SIGCOMM 2023 Conference, 2023

Abs Bib Link

When streaming 360° video, it is possible to reduce bandwidth by 5\texttimes with approaches that spatially segment video into tiles and only stream the user’s viewport. Unfortunately, it is difficult to accurately predict a user’s viewport even 2–3 seconds before playback. This results in rebuffering events owing to misprediction of a user’s viewport or network bandwidth dips, which hurts interactive experience. However, avoiding rebuffering by naively skipping tiles that do not arrive by the playback deadline may lead to incomplete viewports and degraded experience.In this paper, we describe Dragonfly, a new 360° system that preserves interactive experience by avoiding playback stalls while maintaining high perceptual quality. Dragonfly prudently skips tiles using a model that defines an overall utility function to decide which tiles to fetch, and at which qualities they should be fetched, with the goal of optimizing user experience. To minimize incomplete viewports, it also fetches a low quality masking stream. Using a user study with 26 users and emulation-based experiments we show that Dragonfly has higher quality, and lower overheads, than state-of-the-art 360° streaming approaches. For instance, in our study, 65% of sessions have a rating of 4 or higher (Good/Excellent) with Dragonfly, while only 16% of sessions with Pano, and 13% of sessions with Flare achieve this rating.
@inproceedings{dragonfly, author = {Ghabashneh, Ehab and Bothra, Chandan and Govindan, Ramesh and Ortega, Antonio and Rao, Sanjay}, title = {Dragonfly: Higher Perceptual Quality For Continuous 360° Video Playback}, booktitle = {Proceedings of the ACM SIGCOMM 2023 Conference}, year = {2023}, series = {ACM SIGCOMM '23}, pages = {516–532}, address = {New York, NY, USA}, publisher = {Association for Computing Machinery}, isbn = {9798400702365}, url = {https://doi.org/10.1145/3603269.3604876}, doi = {10.1145/3603269.3604876}, numpages = {17}, keywords = {360° videos, video streaming, adaptive bit-rate (ABR) algorithms}, location = {New York, NY, USA}, topics = {video} }

Enabling Premium Service for Streaming Video in Cellular Networks

Xing Xu, Ramesh Govindan, Ajay Mahimkar, and 3 more authors

In 2020 IFIP Networking Conference (Networking), 2020

Bib

@inproceedings{xu2020,
  author = {Xu, Xing and Govindan, Ramesh and Mahimkar, Ajay and Shankaranarayanan, N.K. and Wang, Jia and Yu, Minlan},
  booktitle = {2020 IFIP Networking Conference (Networking)},
  title = {Enabling Premium Service for Streaming Video in Cellular
  		  Networks},
  year = {2020},
  volume = {},
  number = {},
  pages = {244-252},
  topics = {video},
  doi = {}
}

CoNEXT

AViC: A Cache for Adaptive Bitrate Video

Zahaib Akhtar, Yaguang Li, Ramesh Govindan, and 4 more authors

In 15th ACM Conference on emerging Networking EXperiments and Technologies (CoNEXT) Orlando, Florida, U.S. December 9-12, 2019, 2019

Bib Link

@inproceedings{akhtar2019,
  title = {AViC: A Cache for Adaptive Bitrate Video},
  author = {Akhtar, Zahaib and Li, Yaguang and Govindan, Ramesh and Halepovic, Emir and Liu, Yan and Hao, Shuai and Sen, Subhabrata},
  year = {2019},
  date = {2019-12-09},
  booktitle = {15th ACM Conference on emerging Networking EXperiments and
  		  Technologies (CoNEXT) Orlando, Florida, U.S. December 9-12,
  		  2019},
  keywords = {},
  pubstate = {published},
  topics = {video},
  tppubtype = {inproceedings}
}

IMC

Understanding Video Management Planes

Zahaib Akhtar, Yun Seong Nam, Jessica Chen, and 5 more authors

In Proceedings of the Internet Measurement Conference 2018, 2018

Bib Link

@inproceedings{akhtar:2018,
  title = {Understanding Video Management Planes},
  author = {Akhtar, Zahaib and Nam, Yun Seong and Chen, Jessica and Govindan, Ramesh and Katz-Bassett, Ethan and Rao, Sanjay and Zhan, Jibin and Zhang, Hui},
  url = {http://doi.acm.org/10.1145/3278532.3278554},
  doi = {10.1145/3278532.3278554},
  isbn = {978-1-4503-5619-0},
  year = {2018},
  date = {2018-11-01},
  booktitle = {Proceedings of the Internet Measurement Conference 2018},
  pages = {238--251},
  publisher = {ACM},
  address = {Boston, MA, USA},
  series = {IMC '18},
  keywords = {video delivery, Video Management Plane},
  pubstate = {published},
  tppubtype = {inproceedings},
  topics = {video},
}

SIGCOMM

Oboe: Auto-tuning Video ABR Algorithms to Network Conditions

Zahaib Akhtar, Yun Seong Nam, Ramesh Govindan, and 6 more authors

In Proceedings of the 2018 Conference of the ACM Special Interest Group on Data Communication (SIGCOMM), 2018

Bib Link

@inproceedings{akhtar18a,
  title = {Oboe: Auto-tuning Video ABR Algorithms to Network
  		  Conditions},
  author = {Akhtar, Zahaib and Nam, Yun Seong and Govindan, Ramesh and Rao, Sanjay and Chen, Jessica and Katz-Bassett, Ethan and Ribeiro, Bruno and Zhan, Jibin and Zhang, Hui},
  url = {http://doi.acm.org/10.1145/3230543.3230558},
  doi = {10.1145/3230543.3230558},
  isbn = {978-1-4503-5567-4},
  year = {2018},
  date = {2018-01-01},
  booktitle = {Proceedings of the 2018 Conference of the ACM Special
  		  Interest Group on Data Communication (SIGCOMM)},
  pages = {44--58},
  publisher = {ACM},
  address = {Budapest, Hungary},
  series = {SIGCOMM '18},
  keywords = {adaptive bitrate algorithms, video delivery},
  pubstate = {published},
  topics = {video},
  tppubtype = {inproceedings}
}

SIGCOMM

An Internet-Wide Analysis of Traffic Policing

Tobias Flach, Pavlos Papageorge, Andreas Terzis, and 5 more authors

In Proceedings of the ACM Conference of the Special Interest Group on Data Communication (SIGCOMM ’16) , au 2016

Bib

@inproceedings{flach16a,
  author = {Flach, Tobias and Papageorge, Pavlos and Terzis, Andreas and Pedrosa, Luis and Cheng, Yuchung and Karim, Tayeb and Katz-Bassett, Ethan and Govindan, Ramesh},
  title = { {An Internet-Wide Analysis of Traffic Policing} },
  booktitle = { Proceedings of the ACM Conference of the Special Interest
  		  Group on Data Communication (SIGCOMM '16) },
  month =  au,
  location = { Florianópolis, Brazil },
  topics = {video},
  year = {2016},
  		  }
}

PAM

Modeling HTTP/2 Speed from HTTP/1 Traces

Kyriakos Zarifis, Mark Holland, Manish Jain, and 2 more authors

In Passive and Active Measurement Conference (PAM ’16) , ma 2016

Bib

@inproceedings{zarifis16a,
  author = {Zarifis, Kyriakos and Holland, Mark and Jain, Manish and Katz-Bassett, Ethan and Govindan, Ramesh},
  title = { {Modeling HTTP/2 Speed from HTTP/1 Traces} },
  booktitle = { Passive and Active Measurement Conference (PAM '16) },
  month =  ma,
  location = { Crete, Greece },
  topics = {video},
  year = {2016},
  		  }
}