Balancing frequency-time resources of radio channel in 2-step random access procedure

This paper describes a two-step random access procedure used in 5G networks. An example of this protocol's operation is provided. A modified version of the two-step random access algorithm is also presented and characterized. Simulation modeling was used to obtain indicators of the dependence of the average delay on the input arrival rate. The obtained data allow us to conclude that the use of the modification allows for a significant reduction in the average delay for input arrival rates less than 0.2. If the rate exceeds 0.2, then the use of the basic algorithm ensures a lower average delay. The proposed modification of the two-step random multiple access algorithm can be considered as one of the possible options for constructing a random multiple access procedure for future-generation communication networks for the scenario of massive machine-type communications.