Database-Assisted Distributed and Cloud-Based Access Methods for Unlicensed and Radar Bands



Khan, Z ORCID: 0000-0003-2951-5684, janne lehtomaki, , risto vuohtoniemi, , ekram hossain, , rafael aguilar, , luiz dasilva, , alan, ORCID: 0000-0002-8058-5242 and Marshall,
(2017) Database-Assisted Distributed and Cloud-Based Access Methods for Unlicensed and Radar Bands. IEEE Transactions on Cognitive Communications and Networking, 3 (3). pp. 404-419.

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Abstract

This paper focuses on the design of methods which enable unlicensed devices to use the frequency spectrum already allocated to rotating radar systems without causing interference to those radars. We first present a database-assisted spectrum sharing/co-existence mechanism for radar spectrum bands. This mechanism takes into account the real spectrum usage behavior of different radars, and is also implemented by prototyping a real-time rotating radar beam emulator, a radar spectrum database using MySQL software, and spectrum access algorithm on wireless open access research platform. Then we propose a cloud-based unified channel access (UCA) method and a distributed UCA method for co-existence of multiple competing users in unlicensed and rotating radar spectrum bands. We model the UCA problem as a game and propose iterative methods (i.e., algorithms) to obtain the solution of the game. We study the stability of the proposed methods under several different scenarios. We show that the proposed UCA game is a potential game, and also show that the proposed methods guarantee convergence to a Nash equilibrium. Our results show that the cloud-based method allows fast convergence and can achieve performance that is close to optimal solution.

Item Type: Article
Uncontrolled Keywords: Spectrum sharing, unlicensed channels, radar channels, game theory, potential games, cloud-assisted, distributed spectrum access, MySQL database, prototype
Depositing User: Symplectic Admin
Date Deposited: 17 Jul 2017 14:02
Last Modified: 16 Mar 2024 16:09
DOI: 10.1109/TCCN.2017.2733533
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3008516