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.

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 Dynamic Spectrum Sharing in 5G Wireless Networks With Full-Duplex Technology: Recent Advances and Research Challenges

2018 ◽  
Vol 20 (1) ◽  
pp. 674-707 ◽  
Author(s):  
Shree Krishna Sharma ◽  
Tadilo Endeshaw Bogale ◽  
Long Bao Le ◽  
Symeon Chatzinotas ◽  
Xianbin Wang ◽  
...  
Keyword(s):  
Wireless Networks ◽  
Spectrum Sharing ◽  
Dynamic Spectrum ◽  
Full Duplex ◽  
Dynamic Spectrum Sharing ◽  
Research Challenges ◽  
Recent Advances

scholarly journals Interference Cancellation Based Spectrum Sharing for Massive MIMO Communication Systems

Sensors ◽  
2021 ◽  
Vol 21 (11) ◽  
pp. 3584
Author(s):  
Milembolo Miantezila Junior ◽  
Bin Guo ◽  
Chenjie Zhang ◽  
Xuemei Bai
Keyword(s):  
Interference Cancellation ◽  
Communication Systems ◽  
Spectrum Sharing ◽  
Null Space ◽  
Base Station ◽  
Base Stations ◽  
Small Cells ◽  
Data Traffic ◽  
New Approach ◽  
Lte Advanced

Cellular network operators are predicting an increase in space of more than 200 percent to carry the move and tremendous increase of total users in data traffic. The growing of investments in infrastructure such as a large number of small cells, particularly the technologies such as LTE-Advanced and 6G Technology, can assist in mitigating this challenge moderately. In this paper, we suggest a projection study in spectrum sharing of radar multi-input and multi-output, and mobile LTE multi-input multi-output communication systems near m base stations (BS). The radar multi-input multi-output and mobile LTE communication systems split different interference channels. The new approach based on radar projection signal detection has been proposed for free interference disturbance channel with radar multi-input multi-output and mobile LTE multi-input multi-output by using a new proposed interference cancellation algorithm. We chose the channel of interference with the best free channel, and the detected signal of radar was projected to null space. The goal is to remove all interferences from the radar multi-input multi-output and to cancel any disturbance sources from a chosen mobile Communication Base Station. The experimental results showed that the new approach performs very well and can optimize Spectrum Access.

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.

Sign in / Sign up

Export Citation Format

Share Document