---
_id: '487'
abstract:
- lang: eng
  text: In this paper we study network architecture for unlicensed cellular networking
    for outdoor coverage in TV white spaces. The main technology proposed for TV white
    spaces is 802.11af, a Wi-Fi variant adapted for TV frequencies. However, 802.11af
    is originally designed for improved indoor propagation. We show that long links,
    typical for outdoor use, exacerbate known Wi-Fi issues, such as hidden and exposed
    terminal, and significantly reduce its efficiency. Instead, we propose CellFi,
    an alternative architecture based on LTE. LTE is designed for long-range coverage
    and throughput efficiency, but it is also designed to operate in tightly controlled
    and centrally managed networks. CellFi overcomes these problems by designing an
    LTE-compatible spectrum database component, mandatory for TV white space networking,
    and introducing an interference management component for distributed coordination.
    CellFi interference management is compatible with existing LTE mechanisms, requires
    no explicit communication between base stations, and is more efficient than CSMA
    for long links. We evaluate our design through extensive real world evaluation
    on of-the-shelf LTE equipment and simulations. We show that, compared to 802.11af,
    it increases coverage by 40% and reduces median flow completion times by 2.3x.
author:
- first_name: Ghufran
  full_name: Baig, Ghufran
  last_name: Baig
- first_name: Bozidar
  full_name: Radunovic, Bozidar
  last_name: Radunovic
- first_name: Dan-Adrian
  full_name: Alistarh, Dan-Adrian
  id: 4A899BFC-F248-11E8-B48F-1D18A9856A87
  last_name: Alistarh
  orcid: 0000-0003-3650-940X
- first_name: Matthew
  full_name: Balkwill, Matthew
  last_name: Balkwill
- first_name: Thomas
  full_name: Karagiannis, Thomas
  last_name: Karagiannis
- first_name: Lili
  full_name: Qiu, Lili
  last_name: Qiu
citation:
  ama: 'Baig G, Radunovic B, Alistarh D-A, Balkwill M, Karagiannis T, Qiu L. Towards
    unlicensed cellular networks in TV white spaces. In: <i>Proceedings of the 2017
    13th International Conference on Emerging Networking EXperiments and Technologies</i>.
    ACM; 2017:2-14. doi:<a href="https://doi.org/10.1145/3143361.3143367">10.1145/3143361.3143367</a>'
  apa: 'Baig, G., Radunovic, B., Alistarh, D.-A., Balkwill, M., Karagiannis, T., &#38;
    Qiu, L. (2017). Towards unlicensed cellular networks in TV white spaces. In <i>Proceedings
    of the 2017 13th International Conference on emerging Networking EXperiments and
    Technologies</i> (pp. 2–14). Incheon, South Korea: ACM. <a href="https://doi.org/10.1145/3143361.3143367">https://doi.org/10.1145/3143361.3143367</a>'
  chicago: Baig, Ghufran, Bozidar Radunovic, Dan-Adrian Alistarh, Matthew Balkwill,
    Thomas Karagiannis, and Lili Qiu. “Towards Unlicensed Cellular Networks in TV
    White Spaces.” In <i>Proceedings of the 2017 13th International Conference on
    Emerging Networking EXperiments and Technologies</i>, 2–14. ACM, 2017. <a href="https://doi.org/10.1145/3143361.3143367">https://doi.org/10.1145/3143361.3143367</a>.
  ieee: G. Baig, B. Radunovic, D.-A. Alistarh, M. Balkwill, T. Karagiannis, and L.
    Qiu, “Towards unlicensed cellular networks in TV white spaces,” in <i>Proceedings
    of the 2017 13th International Conference on emerging Networking EXperiments and
    Technologies</i>, Incheon, South Korea, 2017, pp. 2–14.
  ista: 'Baig G, Radunovic B, Alistarh D-A, Balkwill M, Karagiannis T, Qiu L. 2017.
    Towards unlicensed cellular networks in TV white spaces. Proceedings of the 2017
    13th International Conference on emerging Networking EXperiments and Technologies.
    CoNEXT: Conference on emerging Networking EXperiments and Technologies, 2–14.'
  mla: Baig, Ghufran, et al. “Towards Unlicensed Cellular Networks in TV White Spaces.”
    <i>Proceedings of the 2017 13th International Conference on Emerging Networking
    EXperiments and Technologies</i>, ACM, 2017, pp. 2–14, doi:<a href="https://doi.org/10.1145/3143361.3143367">10.1145/3143361.3143367</a>.
  short: G. Baig, B. Radunovic, D.-A. Alistarh, M. Balkwill, T. Karagiannis, L. Qiu,
    in:, Proceedings of the 2017 13th International Conference on Emerging Networking
    EXperiments and Technologies, ACM, 2017, pp. 2–14.
conference:
  end_date: 2017-12-15
  location: Incheon, South Korea
  name: 'CoNEXT: Conference on emerging Networking EXperiments and Technologies'
  start_date: 2017-12-12
date_created: 2018-12-11T11:46:45Z
date_published: 2017-11-28T00:00:00Z
date_updated: 2023-02-23T12:21:11Z
day: '28'
department:
- _id: DaAl
doi: 10.1145/3143361.3143367
language:
- iso: eng
month: '11'
oa_version: None
page: 2 - 14
publication: Proceedings of the 2017 13th International Conference on emerging Networking
  EXperiments and Technologies
publication_identifier:
  isbn:
  - 978-145035422-6
publication_status: published
publisher: ACM
publist_id: '7333'
quality_controlled: '1'
scopus_import: 1
status: public
title: Towards unlicensed cellular networks in TV white spaces
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
year: '2017'
...