Frequency Planning Methods for Multichannel Radio Relay Networks
Asad Rustamov1* , Abdulrahman Babayev2 , Rashad Aliyev2 ,
Javanshir Goyushov3 , Ali Kazimzadeh3
Abstract. In the modern era, the rapid development of the telecommunications sector has necessitated the advancement of radio relay systems. These systems are considered a reliable means of communication, especially in areas with complex geographical conditions. One of the main challenges in ensuring the efficient operation of such systems is the proper allocation and optimal planning of frequency resources. The aim of this study is to investigate the principles of frequency planning in multichannel radio relay networks, analyze interference-related problems, and identify effective approaches for mitigating these issues. At the same time, a comparative analysis of static and dynamic frequency planning methods is conducted to determine their respective application areas. The article provides a detailed analysis of various types of interference in radio relay networks, including co-channel interference, adjacent channel interference, multipath propagation, and electromagnetic interference. To address these challenges, several approaches are proposed, such as optimization of antenna systems, appropriate selection of guard bands, adaptive power control, and the application of diversity techniques. Furthermore, the characteristics of both static and dynamic frequency planning methods are examined, highlighting the advantages of dynamic planning, particularly under varying network conditions. The results of the comparative analysis indicate that both approaches offer suitable solutions depending on specific network scenarios. While static planning is effective for stable and less dynamic networks, dynamic frequency planning – or a hybrid combination of both methods – is more appropriate for achieving optimal performance in modern and complex radio relay systems.
Keywords: radio relay network, multichannel communication system, frequency planning, frequency optimization, interference, interference mitigation, frequency reuse, static frequency planning, dynamic frequency planning