A.96 Monitoring of PRB Usage for MIMO in NG-RAN

28.5523GPP5G performance measurementsManagement and orchestrationRelease 18TS

The PRB Usage for MIMO with dynamic factor measurement could provide operators the load information of radio network in MIMO scenario taking spatial resource into consideration. In the early stage of network development, the measurements with a dynamic spatial factor can reflect the actual frequency and space resource utilization of a cell after MU-MIMO is activated. In the late stage of network development, the measurements can help operators be aware of whether a cell has experienced high load.

The SDM PDSCH/PUSCH PRB Usage considers all subscribers’ MIMO layers in a cell. Correspondingly, it is based on the average value of all scheduled MIMO layers. When subscribers in a cell spread over (e.g. distribute randomly), operators can use SDM PDSCH/PUSCH PRB Usage to evaluate the usage of cell capacity in this scenario.