CarSpeak: A content-centric network for autonomous driving

Swarun Kumar, Lixin Shi, Nabeel Ahmed, Stephanie Gil, Dina Katabi, Daniela Rus

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

29 Scopus citations

Abstract

This paper introduces CarSpeak, a communication system for autonomous driving. CarSpeak enables a car to query and access sensory information captured by other cars in a manner similar to how it accesses information from its local sensors. CarSpeak adopts a content-centric approach where information objects - i.e., regions along the road - are first class citizens. It names and accesses road regions using a multi-resolution system, which allows it to scale the amount of transmitted data with the available bandwidth. CarSpeak also changes the MAC protocol so that, instead of having nodes contend for the medium, contention is between road regions, and the medium share assigned to any region depends on the number of cars interested in that region. CarSpeak is implemented in a state-of-the-art autonomous driving system and tested on indoor and outdoor hardware testbeds including an autonomous golf car and 10 iRobot Create robots. In comparison with a baseline that directly uses 802.11, CarSpeak reduces the time for navigating around obstacles by 2.4x, and reduces the probability of a collision due to limited visibility by 14x.

Original languageEnglish (US)
Title of host publicationSIGCOMM'12 - Proceedings of the ACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication
Pages259-270
Number of pages12
DOIs
StatePublished - Sep 26 2012
Externally publishedYes
EventACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication, SIGCOMM 2012 - Helsinki, Finland
Duration: Aug 13 2012Aug 17 2012

Publication series

NameSIGCOMM'12 - Proceedings of the ACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication

Other

OtherACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication, SIGCOMM 2012
CountryFinland
CityHelsinki
Period8/13/128/17/12

Keywords

  • autonomous vehicles
  • content-centric
  • wireless

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture
  • Electrical and Electronic Engineering

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  • Cite this

    Kumar, S., Shi, L., Ahmed, N., Gil, S., Katabi, D., & Rus, D. (2012). CarSpeak: A content-centric network for autonomous driving. In SIGCOMM'12 - Proceedings of the ACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication (pp. 259-270). (SIGCOMM'12 - Proceedings of the ACM SIGCOMM 2012 Conference Applications, Technologies, Architectures, and Protocols for Computer Communication). https://doi.org/10.1145/2342356.2342403