Enabling LTE in TVWS with radio environment maps: From an architecture design towards a system level prototype

2014 ◽  
Vol 53 ◽  
pp. 62-72 ◽  
Author(s):  
Liljana Gavrilovska ◽  
Jaap van de Beek ◽  
Yong Xie ◽  
Erik Lidström ◽  
Janne Riihijärvi ◽  
...  
Keyword(s):  
System Level ◽  
Architecture Design ◽  
Environment Maps ◽  
Radio Environment Maps

scholarly journals Context-Based Spectrum Sharing in 5G Wireless Networks Based on Radio Environment Maps

2018 ◽  
Vol 2018 ◽  
pp. 1-15 ◽  
Author(s):  
Paweł Kryszkiewicz ◽  
Adrian Kliks ◽  
Łukasz Kułacz ◽  
Hanna Bogucka ◽  
George P. Koudouridis ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Spectrum Sharing ◽  
Base Stations ◽  
System Level ◽  
Context Information ◽  
Control Mechanisms ◽  
Dynamic Spectrum Sharing ◽  
Environment Maps ◽  
Radio Environment Maps ◽  
System Level Simulations

Dynamic spectrum sharing can provide many benefits to wireless networks operators. However, its efficiency requires sophisticated control mechanisms. The more context information is used by it, the higher performance of networks is expected. A facility for collecting this information, processing it, and controlling base stations managed by various network operators is a so-called Radio Environment Map (REM) subsystem. This paper proposes REM-based schemes for the allocation of base stations power levels in 4G/5G networks, while considering interference generated to a licensed network. It is assumed that both networks have different profiles of served users, e.g., area of their positions and movement, which opens opportunities for spectrum sharing. The proposed schemes have been evaluated by means of extensive system-level simulations and compared with two widely adopted policy-based spectrum sharing reference schemes. Simulation results show that dynamic schemes utilizing rich context information outperforms static, policy-based spectrum sharing schemes.

scholarly journals Spectrum Awareness for Cognitive Radios Supported by Radio Environment Maps: Zonal Approach

2021 ◽  
Vol 11 (7) ◽  
pp. 2910
Author(s):  
Paweł Kaniewski ◽  
Janusz Romanik ◽  
Edward Golan ◽  
Krzysztof Zubel
Keyword(s):  
Situational Awareness ◽  
Cognitive Radios ◽  
Field Tests ◽  
Radio Networks ◽  
Map Construction ◽  
Environment Map ◽  
Construction Techniques ◽  
Interpolation Techniques ◽  
Environment Maps ◽  
Radio Environment Maps

In this paper, we present the concept of the Radio Environment Map (REM) designed to ensure electromagnetic situational awareness of cognitive radio networks. The map construction techniques based on spatial statistics are presented. The results of field tests done for Ultra High Frequency (UHF) range with different numbers of sensors are shown. Exemplary maps with selected interpolation techniques are presented. Control points where the signal from licensed users is correctly estimated are identified. Finally, the map quality is assessed, and the most promising interpolation techniques are selected.

scholarly journals Application of Radio Environment Maps for Dynamic Broadband Access in TV Bands in Urban Areas

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 19842-19863 ◽  
Author(s):  
Adrian Kliks ◽  
Pawel Kryszkiewicz ◽  
Anna Umbert ◽  
Jordi Perez-Romero ◽  
Ferran Casadevall ◽  
...  
Keyword(s):  
Urban Areas ◽  
Broadband Access ◽  
Environment Maps ◽  
Radio Environment Maps
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