International Symposium on Telecommunication (IST)

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A Traffic Control Approach to Minimize Congestion in O-RAN Architecture

Authors :

Ali Atashbar¹ Hamed Alizadeh Ghazijahani² Mahmoud Atashbar³

1- Department of Electrical Engineering, Azarbaijan Shahid Madani University 2- Department of Electrical Engineering, Azarbaijan Shahid Madani University 3- Department of Electrical Engineering, Azarbaijan Shahid Madani University

Keywords :

O-RAN،resource management،queue

Abstract :

The increasing traffic in densely populated areas has led to congestion issues in open radio access networks (O-RAN). In this research, we address the problem of congestion in O-RAN and aim to minimize it utilizing mixed integer programming (MIP) techniques. We focus on the traffic steering between central unit (CU) and distributed unit (DU) and try to allocate the incoming prioritized packets to radio units (RUs) in a way that minimize the queue at DUs in a O-RAN architecture. We have developed an algorithm to transform the issue into a constrained multi-knapsack problem (MKP) and have introduced a solution to address it. The simulation results demonstrate that the presented algorithm can reduce the mean delay of packets up to 20% respect to normal condition.