OSS Data based Evaluation Algorithm for Radio Utilization Rate under 5G Massive MIMO

As a key technology of 5G, massive MIMO technology is widely applied in wireless cellular network, which significantly increases the number of accepted users and effectively absorbs the hotspot traffic. Meanwhile, radio network resource expands from time domain and frequency domain to space domain. The traditional method which only consider the resource in frequency domain cannot satisfy the requirement of load evaluation. Consequently, the metrics of radio resource utilization rate needs to be studied and redefined. In this paper, a new algorithm of radio resource utilization rate of 5G under MIMO scenario is proposed, in order to precisely evaluate the network load. OSS (Operation Support System) data collected from the current network is analyzed and displayed to verify the effectiveness of the algorithm proposed in this paper.

I. Introduction

MIMO (Multi-Input-Multi-Output) technology was introduced for the first time in 4G, and is maturely deployed in 5G. It multiplexes time and frequency resource with the method of increasing the number of receiving and transmitting antennas, thereby improving the capability of radio network of 5G system [1] [2]. The number of antennas used in traditional MIMO technology is small and the coverage of the actual signal is limited to one single horizontal direction, namely 2D-MIMO [3] [4].