Home > Communication Service Provider Solutions > Enabling Telecom Transformation > 5G Disaggregated RAN Performance Benchmarking Insights > Enabling CPU C-States for power efficiency
Power saving is the overall goal of disaggregated RAN, alongside achieving energy efficiency parity with Legacy RAN. Achieving energy efficiency is a gradual task that will optimize the CPU cores and overall E2E system utilization for a specific load and radio channel conditions. There are multiple facets to this process, such as:
Since 5G disaggregated RAN is going to be hosted on GPP Servers, there is a possibility that the hosting server is being underutilized during off-peak hours and some CPU cores are running in the idle states. This state certainly presents an opportunity where energy optimization could be applicable. For example, all the unused cores could be moved to the higher C-States. If CPU is running a task, then it moves to C0 state, otherwise could stay in C1, C2 or C6 States, consuming less power than the C0 State. This mechanism can help reduce the overall power consumption of the RAN hosting server. For more information about C-states, see the Energy Analysis User Guide.