Optimizing wireless network throughput under the condition of Physical Layer Security using Software-Defined Networking enabled collaboration
Ramtin Ranji, Uzzam Javed, Bert Boltjes, Fayçal Bouhafs, Frank den Hartog · 2023
We investigated if independent wireless operators can effectively collaborate using Software-Defined Wireless Networking (SDWN) to achieve secret wireless communications and optimize useful throughput under the condition of Physical-Layer Security enabled secrecy in heavily contended spectrum. We studied this on the level of useful throughput, in addition to Signal-to-Interference-plus-Noise Ratio. The investigation was carried out by means of a series of discrete event simulations of a realistic Wi-Fi network deployment. We found that the difference between the user throughputs of the legitimate station and the eavesdropper could be a reasonably good proxy for secrecy capacity and conclude that SDWN controllers should ideally optimize the network based on empirical feedback from the system and active learning mechanisms, rather than on hard-programmed pre-calculated network models.