Shades of White: Impacts of Population Dynamics and TV Viewership on Available TV Spectrum

Zhao, Zhongyuan; Vuran, Mehmet C.; Batur, Demet; Ekici, Eylem

doi:10.1109/tvt.2019.2892867

Cited by 12 publications

(10 citation statements)

References 48 publications

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“…The simulation shows a 29% increase with wider coverage of BPLC. An alternative approach in [63], framework, and simulations are made to get the capacity of the available TVWS by considering the TV viewership as the primary users. The authors developed a micro and macro model based on viewership analytics and provide a minimum increase of 3.8 in spectrum availability.…”

Section: 9recent Field Trials and Simulations Of Tvwsmentioning

confidence: 99%

A survey and comparison of TV white space implementations in Japan, the Philippines, Singapore, the united kingdom, and the united states

Ante¹,

Molina²,

Trinidad³

et al. 2021

IJATEE

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Section: 9recent Field Trials and Simulations Of Tvwsmentioning

confidence: 99%

A survey and comparison of TV white space implementations in Japan, the Philippines, Singapore, the united kingdom, and the united states

Ante¹,

Molina²,

Trinidad³

et al. 2021

IJATEE

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show abstract

“…The evacuation delay increases the zapping time, hence degrades the quality of experience (QoE) of the TV user. Assuming a 10-20% increase of zapping time is acceptable to the TV user, then the evacuation time should be lower than 200ms, ∆ max ≤ 200ms [8], [13].…”

Section: A Physical Modelmentioning

confidence: 99%

“…However, the TVWS approach leaves populated urban areas, where spectrum shortage is most severe, with too few TVWS [3]- [5], for these areas are also major markets of broadcast TV. As TV receiver feedback becomes essential in the next generation terrestrial TV standard, ATSC 3.0 [6], a TV receiverfacilitated TV spectrum sharing paradigm is proposed to exploit the underutilized legacy Over-The-Air TV service areas (TV black-spaces) [7]- [9]. An exemplary network structure of TV black-spaces paradigm is illustrated in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…The secondary user base-station has to evacuate communication on a TV channel immediately if any TV receiver in its interference zone is tuned in. Analyses based on empirical data of population, TV stations, TV usage and traffic patterns, show that the TV black-spaces approach can bring several folds increase of available spectrum in major urban areas compared to TVWS approach, meanwhile requires much stricter timing on spectrum management to protect the quality of experience of TV viewers [9]. It is a challenge to design infrastructures for the timing requirement of spectrum management in the TV black-spaces.…”

Section: Introductionmentioning

confidence: 99%

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Meeting Real-Time Constraint of Spectrum Management in TV Black-Space Access

Zhao

2018

Preprint

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The TV set feedback feature standardized in the next generation TV system, ATSC 3.0, would enable opportunistic access of active TV channels in future Cognitive Radio Networks. This new dynamic spectrum access approach is named as black-space access, as it is complementary of current TV white space, which stands for inactive TV channels. TV black-space access can significantly increase the available spectrum of Cognitive Radio Networks in populated urban markets, where spectrum shortage is most severe while TV whitespace is very limited. However, to enable TV black-space access, secondary user has to evacuate a TV channel in a timely manner when TV user comes in. Such strict real-time constraint is an unique challenge of spectrum management infrastructure of Cognitive Radio Networks. In this paper, the real-time performance of spectrum management with regard to the degree of centralization of infrastructure is modeled and tested. Based on collected empirical network latency and database response time, we analyze the average evacuation time under four structures of spectrum management infrastructure: fully distribution, city-wide centralization, national-wide centralization, and semi-national centralization. The results show that national wide centralization may not meet the real-time requirement, while semi-national centralization that use multiple co-located independent spectrum manager can achieve real-time performance while keep most of the operational advantage of fully centralized structure.

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“…Kullanılmayan TV frekans bantları üzerinden yapılan haberleşmeye TV beyaz boşluk haberleşmesi (TV white space communications) adı verilmektedir [26,27]. IEEE 802.11af (White-Fi ve Super Wi-Fi) ve IEEE 802.22 WRAN (Wireless Regional Area Network) kablosuz sistemleri bilişsel radyonun boş TV bandını (54 MHz ile 862 MHz arası) kullandığı uygulamalarındandır [28][29][30][31][32]. TV frekans bantlarının doluluk oranlarının belirlenmesi ve bilişsel radyo uygulamaları için uygun olup olmadıklarının belirlenmesi günümüzün güncel çalışma konularındandır.…”

Section: Introductionunclassified

Bilişsel Radyo Uygulamaları için Uzun Süreli Spektrum Doluluk Ölçümleri: Samsun Şehir Merkezi Örneği

Albayrak

Kurnaz

Karagöl

2020

Düzce Üniversitesi Bilim Ve Teknoloji Dergisi

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Bu çalışmada Samsun şehir merkezinde 470 MHz-790 MHz frekans aralığında, spektrumun en yoğun olduğu bölgede, 7 farklı günde ve 14 farklı zamanda spektrum doluluk ölçümleri yapılmıştır. Ölçümlerde RTL2832U-R820T spektrum analizörü kullanılmıştır. Spektrum doluluk değerlendirmelerinde referans olarak-40 dB ve-45 dB sinyal gücü seçilmiştir. Ölçüm sonuçlarından spektrum doluluk oranlarının zamana bağlı olarak değişkenlik gösterdiği bazı kanalların gün içerisinde kullanılmadığı veya sinyal kalitesinin kullanılmayacak kadar düştüğü görülmüştür.-40 dB referans sinyal seviyesi için 320 MHz'lik spektrumun en fazla % 60'ı kullanılırken,-45 dB için bu oran %55'dir. Dolayısıyla seçilen ölçüm noktası için gün içinde 144 MHz'e yakın bir spektrum kullanılmamaktadır. Bu değer analog TV frekans bandında (470 MHz-790 MHz) bilişsel radyo uygulamalarından olan IEEE 802.11af ve IEEE 802.22 kablosuz sistemlerinin rahatlıkla kullanılabilir olduğunu göstermektedir.

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Shades of White: Impacts of Population Dynamics and TV Viewership on Available TV Spectrum

Cited by 12 publications

References 48 publications

A survey and comparison of TV white space implementations in Japan, the Philippines, Singapore, the united kingdom, and the united states

A survey and comparison of TV white space implementations in Japan, the Philippines, Singapore, the united kingdom, and the united states

Meeting Real-Time Constraint of Spectrum Management in TV Black-Space Access

Bilişsel Radyo Uygulamaları için Uzun Süreli Spektrum Doluluk Ölçümleri: Samsun Şehir Merkezi Örneği

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