Spider: A Multi-Hop Millimeter-Wave Network for Live Video Analytics

Zhuqi Li, Yuanchao Shu, Ganesh Ananthanarayanan, Longfei Shangguan, Kyle Jamieson, Paramvir Bahl

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

5 Scopus citations


Massive video analytics systems, comprised of many densely-deployed cameras and supporting edge servers, are driving innovation in many areas including smart retail stores and security monitoring. To support such systems the challenge lies in collecting video footage in a way that maximizes end-to-end application goals, and scales this performance as camera density increases to meet application needs. This paper presents Spider, a multi-hop, millimeter-wave (mmWave) wireless relay network design that meets these needs. To mitigate physical mmWave link blockage, Spider integrates a low-latency Wi-Fi control plane with a mmWave relay data plane, allowing agile re-routing around blockages. Spider proposes a novel video bit-rate allocation algorithm coupled with a scalable routing algorithm that works hand-in-hand toward the application-level objective of maximizing video analytics accuracy, rather than simply maximizing data throughput. Our experimental evaluation uses a combination of testbed deployment and trace-driven simulation and compares against both Wi-Fi and mmWave mesh schemes that operate without Spider's algorithms. Results show that Spider is able to support camera densities up to 176% higher (gains of 2.76x) than the best-performing comparison scheme, allowing it alone to meet real-world camera density targets (4-250 cameras/1,000 sq. ft., depending on application). Further experiments demonstrate Spider's scalability in the presence of failures, with a 5.4-100x reduction in average failure recovery time.

Original languageEnglish (US)
Title of host publication6th ACM/IEEE Symposium on Edge Computing, SEC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages14
ISBN (Electronic)9781450383905
StatePublished - 2021
Externally publishedYes
Event6th ACM/IEEE Symposium on Edge Computing, SEC 2021 - San Jose, United States
Duration: Dec 14 2021Dec 17 2021

Publication series

Name6th ACM/IEEE Symposium on Edge Computing, SEC 2021


Conference6th ACM/IEEE Symposium on Edge Computing, SEC 2021
Country/TerritoryUnited States
CitySan Jose

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Hardware and Architecture


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