3G Wireless Networks
MAR: a commuter router infrastructure for the mobile Internet
Proceedings of the 2nd international conference on Mobile systems, applications, and services
Improving loss resilience with multi-radio diversity in wireless networks
Proceedings of the 11th annual international conference on Mobile computing and networking
Robust rate adaptation for 802.11 wireless networks
Proceedings of the 12th annual international conference on Mobile computing and networking
MobiSteer: using steerable beam directional antenna for vehicular network access
Proceedings of the 5th international conference on Mobile systems, applications and services
Interactive wifi connectivity for moving vehicles
Proceedings of the ACM SIGCOMM 2008 conference on Data communication
BreadCrumbs: forecasting mobile connectivity
Proceedings of the 14th ACM international conference on Mobile computing and networking
White space networking with wi-fi like connectivity
Proceedings of the ACM SIGCOMM 2009 conference on Data communication
Augmenting mobile 3G using WiFi
Proceedings of the 8th international conference on Mobile systems, applications, and services
AccuRate: constellation based rate estimation in wireless networks
NSDI'10 Proceedings of the 7th USENIX conference on Networked systems design and implementation
Bartendr: a practical approach to energy-aware cellular data scheduling
Proceedings of the sixteenth annual international conference on Mobile computing and networking
SenseLess: A Database-Driven White Spaces Network
IEEE Transactions on Mobile Computing
Beyond deployments and testbeds: experiences with public usage on vehicular WiFi hotspots
Proceedings of the 10th international conference on Mobile systems, applications, and services
Argos: practical many-antenna base stations
Proceedings of the 18th annual international conference on Mobile computing and networking
Video streaming using whitespace spectrum for vehicular applications
Proceeding of the 11th annual international conference on Mobile systems, applications, and services
The 14th international workshop on mobile computing systems and applications (ACM HotMobile 2013)
ACM SIGMOBILE Mobile Computing and Communications Review
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We explore the use of TV whitespaces based communication systems for providing robust connectivity to vehicles. We envision a setup where whitespaces base stations mounted by roadside that communicate with whitespaces gateway nodes placed on vehicles. A key challenge in this setup is the asymmetry in transmission power limits -- the fixed base station is allowed to communicate at up to 4W, while the mobile gateways on vehicles are limite to 100mW. This paper presents a specific network design called Scout to deal with this asymmetry in which whitespaces transceivers are used in the downlink direction while a more traditional cellular path is used in the uplink one. As the key component of this system, we describe a novel channel probing mechanism that sends a forward radio to look ahead and identify the best channel parameters to be used when the rear radio eventually reaches the forward post. We report various challenges and experience in this design and our on going plans to use it for providing Internet access to public city buses. Our initial results indicate a 4× coverage improvement and 1.4X throughput gain achieved by Scout.