Towards unlicensed cellular networks in TV white spaces

Baig, Ghufran; Alistarh, Dan; Karagiannis, Thomas; Radunović, Božidar; Balkwill, Matthew; Qiu, Lili

doi:10.1145/3143361.3143367

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…That spectrum band is in most cases left totally unused in areas not so populated (e.g., rural areas), and due to the fact that it is referred to as TV whitespace. Based on this under-use of spectrum originally meant only for TV broadcasting, regulators are opening up this previously licensed spectrum for unlicensed use [25]. TV whitespaces for unlicensed use brought about a revolution to cognitive radio, spectrum sensing as well as to dynamic spectrum access [26].…”

Section: Dynamic Spectrum Accessmentioning

confidence: 99%

A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals

Figueiredo

Mennes

Jabandzic

et al. 2020

Sensors

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The next generation of wireless and mobile networks will have to handle a significant increase in traffic load compared to the current ones. This situation calls for novel ways to increase the spectral efficiency. Therefore, in this paper, we propose a wireless spectrum hypervisor architecture that abstracts a radio frequency (RF) front-end into a configurable number of virtual RF front ends. The proposed architecture has the ability to enable flexible spectrum access in existing wireless and mobile networks, which is a challenging task due to the limited spectrum programmability, i.e., the capability a system has to change the spectral properties of a given signal to fit an arbitrary frequency allocation. The proposed architecture is a non-intrusive and highly optimized wireless hypervisor that multiplexes the signals of several different and concurrent multi-carrier-based radio access technologies with numerologies that are multiple integers of one another, which are also referred in our work as radio access technologies with correlated numerology. For example, the proposed architecture can multiplex the signals of several Wi-Fi access points, several LTE base stations, several WiMAX base stations, etc. As it able to multiplex the signals of radio access technologies with correlated numerology, it can, for instance, multiplex the signals of LTE, 5G-NR and NB-IoT base stations. It abstracts a radio frequency front-end into a configurable number of virtual RF front ends, making it possible for such different technologies to share the same RF front-end and consequently reduce the costs and increasing the spectral efficiency by employing densification, once several networks share the same infrastructure or by dynamically accessing free chunks of spectrum. Therefore, the main goal of the proposed approach is to improve spectral efficiency by efficiently using vacant gaps in congested spectrum bandwidths or adopting network densification through infrastructure sharing. We demonstrate mathematically how our proposed approach works and present several simulation results proving its functionality and efficiency. Additionally, we designed and implemented an open-source and free proof of concept prototype of the proposed architecture, which can be used by researchers and developers to run experiments or extend the concept to other applications. We present several experimental results used to validate the proposed prototype. We demonstrate that the prototype can easily handle up to 12 concurrent physical layers.

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Section: Dynamic Spectrum Accessmentioning

confidence: 99%

A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals

Figueiredo

Mennes

Jabandzic

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…That spectrum band is in most cases left totally unused in areas not so populated (e.g., rural areas), and due to that, it is referred to as TV white-space. Based on this under-utilization of spectrum originally meant only for TV broadcasting, regulators are opening up this previously licensed spectrum for unlicensed use [21]. TV white-spaces for unlicensed use brought about a revolution to cognitive radio, spectrum sensing as well as to dynamic spectrum access [22].…”

Section: A Dynamic Spectrum Accessmentioning

confidence: 99%

A Base-Band Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM signals

Figueiredo¹,

Mennes²,

Jabandzic³

et al. 2019

Preprint

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The next generation of wireless and mobile networks will have to handle a significant increase in traffic load compared to the actual one. This situation calls for novel ways to increase spectral efficiency. Therefore in this paper, we propose a wireless spectrum hypervisor architecture that abstracts a radio frequency (RF) front-end into a configurable number of virtual RF front-ends. The proposed architecture has the ability to enable flexible spectrum access in existing wireless and mobile networks, which is a challenging task due to the limited spectrum programmability, $i.e.$, the capability a system has to change the spectral properties of a given signal to fit an arbitrary frequency allocation. The main goal of the proposed approach is to improve spectral efficiency by efficiently using vacant gaps in congested spectrum-bandwidths or adopting network densification through infrastructure sharing. We demonstrate mathematically how our proposed approach works and present several simulation results proving its functionality and efficiency. Additionally, we designed and implemented an open-source and free proof of concept prototype of the proposed architecture, which can be used by researchers and developers to run experiments or extend the concept to other applications. We present several experimental results used to validate the proposed prototype. We demonstrate that the prototype can easily handle up to 12 concurrent physical layers.

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“…The applications of different game theoretic frameworks to model wireless communications problems relating to directional antennas, dynamic spectrum access, infrastructure sharing, cloud-assisted radio access, cooperative content delivery [12]. Wi-Fi and these other devices contend for the same channel-constrained 2.4 GHz frequency spaces making it more crowded and unsuitable for Wi-Fi use due to too much interference from other devices and the Wi-Fi connections [9].…”

Section: Related Workmentioning

confidence: 99%

CCIRGTN-Coexistence Channel Interference Reduction Using Game Assumptions in Television White Space Network

Rajeshwarkar¹,

Jagade²,

P³

et al. 2019

helix

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In the last decade, wireless communication growth has been created not only because of exclusive openings, but also it formed big challenges to the market. So as to meet the increasing demand at no too much cost or power utilization, one possible solution for the providers is to obtain more channels for wireless transmissions. Unlike the long period channel assignment to restricted licenses, secondary channel admission is considered as an acceptable option to get extra channels at the minimum cost. In specific, the very high-frequency and ultra highfrequency television band is measured as the most capable solution for secondary usage because of its better channel propagation characteristics. This proposed CCIRGTN, Coexistence Channel Interference Reduction using Game assumptions in Television white space Network, discusses the neighboring channel coexistence interference minimization techniques. Based on the interference device detection probability, removal of noninterference devices within the range of interference devices is initiated. After that, network starts the device reconnection based on the position of the devices and its interference range devices. The probability estimation is applied based on the connected devices and time period of collecting the television band devices (TVBD) network information. From the distributed random probability, decision making is executed to initiate the game concept between devices. The game records the reports on the number of players and game plans. Based on the gaming output, collect the average power used channel to access currently.

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Towards unlicensed cellular networks in TV white spaces

Cited by 10 publications

References 12 publications

A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals

A Baseband Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM Signals

A Base-Band Wireless Spectrum Hypervisor for Multiplexing Concurrent OFDM signals

CCIRGTN-Coexistence Channel Interference Reduction Using Game Assumptions in Television White Space Network

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