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WhiteHaul: an efficient spectrum aggregation system for low-cost and high capacity backhaul over white spaces

Kassem, MM; Kheirkhah, M; Marina, MK; Buneman, P; (2020) WhiteHaul: an efficient spectrum aggregation system for low-cost and high capacity backhaul over white spaces. In: MobiSys '20: Proceedings of the 18th International Conference on Mobile Systems, Applications, and Services. (pp. pp. 338-351). Association for Computing Machinery (ACM): New York, NY, USA. Green open access

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Abstract

We address the challenge of backhaul connectivity for rural and developing regions, which is essential for universal fixed/mobile Internet access. To this end, we propose to exploit the TV white space (TVWS) spectrum for its attractive properties: low cost, abundance in under-served regions and favorable propagation characteristics. Specifically, we propose a system called WhiteHaul for the efficient aggregation of the TVWS spectrum tailored for the backhaul use case. At the core of WhiteHaul are two key innovations: (i) a TVWS conversion substrate that can efficiently handle multiple non-contiguous chunks of TVWS spectrum using multiple low cost 802.11n/ac cards but with a single antenna; (ii) novel use of MPTCP as a link-level tunnel abstraction and its use for efficiently aggregating multiple chunks of the TVWS spectrum via a novel uncoupled, cross-layer congestion control algorithm. Through extensive evaluations using a prototype implementation of WhiteHaul, we show that: (a) WhiteHaul can aggregate almost the whole of TV band with 3 interfaces and achieve nearly 600Mbps TCP throughput; (b) the WhiteHaul MPTCP congestion control algorithm provides an order of magnitude improvement over state of the art algorithms for typical TVWS backhaul links. We also present additional measurement and simulation based results to evaluate other aspects of the WhiteHaul design.

Type: Proceedings paper
Title: WhiteHaul: an efficient spectrum aggregation system for low-cost and high capacity backhaul over white spaces
Event: 18th International Conference on Mobile Systems, Applications, and Services (MobiSys '20)
ISBN-13: 9781450379540
Open access status: An open access version is available from UCL Discovery
DOI: 10.1145/3386901.3388950
Publisher version: https://doi.org/10.1145/3386901.3388950
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10114386
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