Abstract
In this study, we investigated the coexistence of the 5G communication network with a fixed-satellite service (FSS) in the 3.5 GHz and 26 GHz frequency bands. We analyzed an angular protection scheme for the FSS Earth station (ES) and 5G base stations (BSs). In addition, we defined the fixed BS-ES relative location, relative distance, and angular changes. The angular protection was integrated into the exclusion and restricted zones proposed by the distance protection scheme for simulation analysis to develop a transmit power control scheme based on the Citizens Broadband Radio Service. Its performances were extensively analyzed through simulations. The proposed scheme was evaluated in practical scenarios: rural macrocells, urban macrocells, and urban microcells, as defined by the 3rd Generation Partnership Project (3GPP). The influence of antenna type was also researched, and BSs with 4 × 4, 8 × 8 and 16 × 16 antenna arrays, as specified by 3GPP, were considered for 5G networks. Finally, the results prove that the angular protection solution can solve the coexistence of the 5G system and the FSS. In addition, when angular protection and distance protection are used simultaneously, the coexistence effect of the two systems can be strengthened. Moreover, this work provides a quantitative perception for selecting system parameters, including an interference margin for the different scenarios and antenna types, the exclusion size, and the reduction area.
Highlights
The demand for 5G radio frequency (RF) communication systems is increasing
Most coexistence studies use the space domain technique. It is further separated into exclusion zones and restriction zones, according to the definition of [11], an exclusion zone is a geographical area within which licensees are not allowed to have active radio transmitters, and restriction zones are geographical areas within which victim receivers will not be subject to harmful interference caused by interferer transmissions
In the previous work [6], we confirmed that the antenna gain is related to the deviation of the azimuth and elevation angle from the boresight, and we proposed a plan to protect the target
Summary
The demand for 5G radio frequency (RF) communication systems is increasing. As a fifth-generation technology standard for broadband cellular networks, 5G has higher data rates, shorter delays, and more connections than 4G. Four types of interference exist between 5G and FSS systems: from on one frequency band. Found that the influence of angles on frequency band coexistence not studied Itinwas prior studies. In the study of [9], distanceband protection scheme was incorporated into the analysis of schemethe was incorporated into the analysis the protection band andthe thedistance angle ofprotection arrival to achieve coexistence of LTE-Advanced and ofFSS theservices. In restricted areas, some interactive power control schemes integrated the exclusion and restricted zones proposed by the distance protection inspired the power control schemein used in CBRS were proposed and evaluated. The Shutting off the harmful beam was performed to decrease the exclusion and restriction principle of angular protection from the easier to the more advanced cases; zones, and to reduce the BS.
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