Downlink Cofrequency Interference Analysis of Vehicles and UAV Network in Ka Band

Abstract

With the rapid development of radio and computer technologies, the application scenarios of UAV carrying computer flight control systems are becoming more and more abundant. UAV can form a collaborative network with ground IoV (Internet of Vehicle) to improve the link quality of vehicle signals in some environments with poor network connectivity. For UAV and ground vehicles that are far apart, satellites can assist in the transmission of data between them. UAVs are allowed to be included in the satellite communication network in the Ka band in the 2015 World Radiocommunication Conference. In order to avoid the interference with existing communication services in the Ka band, it is necessary to limit the flying height of the UAV. This article will study the frequency compatibility between UAV and Internet of Vehicles in the same-frequency band. First, model the propagation environment of the UAV transmitting signal is modeled and the path loss of it is calculated, including the basic transmission loss in free space of the signal and the atmospheric propagation loss when the signal passes through the atmosphere. Then the radiation pattern of the receiving antenna is modeled, which is a 4 × 2 antenna array in this article, and the total antenna gain is obtained by adding the element gain and the array gain. Finally, the interference between UAV and Internet of Vehicles is simulated, calculating the interference and noise ratio of UAV to the Internet of Vehicles under different pointing angles between the interference and the interfered antenna and different elevation angles from UAV to the GSO satellite. Finally, the safe separation distance to protect the Internet of Vehicles from interference is got.

Interference Challenges and Management in B5G Network Design: A Comprehensive Review

“…In this subsection, we present the most recent studies conducted on drone interference schemes ( [160][161][162]), inter-cell interference schemes ( [163][164][165][166]), co-channel interference schemes ( [167][168][169][170]), and mutual interference schemes ( [171][172][173]) in UAVs, based on the interference management schemes used for mitigating these types of interference, as follows: a.…”

“…In [169], the authors investigated the downlink interference problem of the UAV and internet of vehicles (IoVs) cooperative network that exists in the same region. In which the compatibility of frequency between UAVs and IoVs operating in the Ka-band is studied to quantify the separation distance necessary to avoid co-channel interference between UAVs and IoVs.…”

“…The interference probability and duration could be considered for the proposed algorithm. [169] Grant the wireless network with extra system gain, resilience, and sturdiness in UAVs-track design.…”