Analysis of TV White Space Availability in Japan

Tsuyoshi SHIMOMURA; Teppei OYAMA; Hiroyuki SEKI

doi:10.1587/transcom.E97.B.350

Analysis of TV White Space Availability in Japan

Tsuyoshi SHIMOMURA, Teppei OYAMA, Hiroyuki SEKI

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Television white spaces (TVWS) are locally and/or temporally unused portions of TV bands. After TVWS regulations were passed in the USA, more and more regulators have been considering efficient use of TVWS. Under the condition that the primary user, i.e., terrestrial TV broadcasting system, is not interfered, various secondary users (SUs) may be deployed in TVWS. In Japan, the TVWS regulations started with broadcast-type SUs and small-area broadcasting systems, followed by voice radio. This paper aims to provide useful insights for more efficient utilization of TVWS as one of the options to meet the continuously increasing demand for wireless bandwidth. TVWS availability in Japan is analyzed using graphs and maps. As per the regulations in Japan, for TV broadcasting service, a protection contour is defined to be 51dBµV/m, while the interference contour for SU is defined to be 12.3dBµV/m. We estimate TVWS availability using these two regulation parameters and the minimum separation distances calculated on the basis of the ITU-R P.1546 propagation models. Moreover, we investigate and explain the effect of two important factors on TVWS availability. One is the measures to avoid adjacent channel interference, while the other is whether the SU has client devices with interference ranges beyond the interference area of the master device. Furthermore, possible options to increase available TVWS channels are discussed.

Publication: IEICE TRANSACTIONS on Communications Vol.E97-B No.2 pp.350-358

Publication Date: 2014/02/01

Publicized

Online ISSN: 1745-1345

DOI: 10.1587/transcom.E97.B.350

Type of Manuscript: Special Section PAPER (Special Section on Technologies for Effective Utilization of Spectrum White Space)

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Authors

Tsuyoshi SHIMOMURA
  Fujitsu Laboratories Ltd.
Teppei OYAMA
  Fujitsu Laboratories Ltd.
Hiroyuki SEKI
  Fujitsu Laboratories Ltd.

Keyword

TV white space, protected area, interference contour, minimum separation distance, regulation

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Tsuyoshi SHIMOMURA, Teppei OYAMA, Hiroyuki SEKI, "Analysis of TV White Space Availability in Japan" in IEICE TRANSACTIONS on Communications, vol. E97-B, no. 2, pp. 350-358, February 2014, doi: 10.1587/transcom.E97.B.350.
Abstract: Television white spaces (TVWS) are locally and/or temporally unused portions of TV bands. After TVWS regulations were passed in the USA, more and more regulators have been considering efficient use of TVWS. Under the condition that the primary user, i.e., terrestrial TV broadcasting system, is not interfered, various secondary users (SUs) may be deployed in TVWS. In Japan, the TVWS regulations started with broadcast-type SUs and small-area broadcasting systems, followed by voice radio. This paper aims to provide useful insights for more efficient utilization of TVWS as one of the options to meet the continuously increasing demand for wireless bandwidth. TVWS availability in Japan is analyzed using graphs and maps. As per the regulations in Japan, for TV broadcasting service, a protection contour is defined to be 51dBµV/m, while the interference contour for SU is defined to be 12.3dBµV/m. We estimate TVWS availability using these two regulation parameters and the minimum separation distances calculated on the basis of the ITU-R P.1546 propagation models. Moreover, we investigate and explain the effect of two important factors on TVWS availability. One is the measures to avoid adjacent channel interference, while the other is whether the SU has client devices with interference ranges beyond the interference area of the master device. Furthermore, possible options to increase available TVWS channels are discussed.
URL: https://globals.ieice.org/en_transactions/communications/10.1587/transcom.E97.B.350/_p

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@ARTICLE{e97-b_2_350,
author={Tsuyoshi SHIMOMURA, Teppei OYAMA, Hiroyuki SEKI, },
journal={IEICE TRANSACTIONS on Communications},
title={Analysis of TV White Space Availability in Japan},
year={2014},
volume={E97-B},
number={2},
pages={350-358},
abstract={Television white spaces (TVWS) are locally and/or temporally unused portions of TV bands. After TVWS regulations were passed in the USA, more and more regulators have been considering efficient use of TVWS. Under the condition that the primary user, i.e., terrestrial TV broadcasting system, is not interfered, various secondary users (SUs) may be deployed in TVWS. In Japan, the TVWS regulations started with broadcast-type SUs and small-area broadcasting systems, followed by voice radio. This paper aims to provide useful insights for more efficient utilization of TVWS as one of the options to meet the continuously increasing demand for wireless bandwidth. TVWS availability in Japan is analyzed using graphs and maps. As per the regulations in Japan, for TV broadcasting service, a protection contour is defined to be 51dBµV/m, while the interference contour for SU is defined to be 12.3dBµV/m. We estimate TVWS availability using these two regulation parameters and the minimum separation distances calculated on the basis of the ITU-R P.1546 propagation models. Moreover, we investigate and explain the effect of two important factors on TVWS availability. One is the measures to avoid adjacent channel interference, while the other is whether the SU has client devices with interference ranges beyond the interference area of the master device. Furthermore, possible options to increase available TVWS channels are discussed.},
keywords={},
doi={10.1587/transcom.E97.B.350},
ISSN={1745-1345},
month={February},}

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TY - JOUR
TI - Analysis of TV White Space Availability in Japan
T2 - IEICE TRANSACTIONS on Communications
SP - 350
EP - 358
AU - Tsuyoshi SHIMOMURA
AU - Teppei OYAMA
AU - Hiroyuki SEKI
PY - 2014
DO - 10.1587/transcom.E97.B.350
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E97-B
IS - 2
JA - IEICE TRANSACTIONS on Communications
Y1 - February 2014
AB - Television white spaces (TVWS) are locally and/or temporally unused portions of TV bands. After TVWS regulations were passed in the USA, more and more regulators have been considering efficient use of TVWS. Under the condition that the primary user, i.e., terrestrial TV broadcasting system, is not interfered, various secondary users (SUs) may be deployed in TVWS. In Japan, the TVWS regulations started with broadcast-type SUs and small-area broadcasting systems, followed by voice radio. This paper aims to provide useful insights for more efficient utilization of TVWS as one of the options to meet the continuously increasing demand for wireless bandwidth. TVWS availability in Japan is analyzed using graphs and maps. As per the regulations in Japan, for TV broadcasting service, a protection contour is defined to be 51dBµV/m, while the interference contour for SU is defined to be 12.3dBµV/m. We estimate TVWS availability using these two regulation parameters and the minimum separation distances calculated on the basis of the ITU-R P.1546 propagation models. Moreover, we investigate and explain the effect of two important factors on TVWS availability. One is the measures to avoid adjacent channel interference, while the other is whether the SU has client devices with interference ranges beyond the interference area of the master device. Furthermore, possible options to increase available TVWS channels are discussed.
ER -