A study on functional splitting optimization of fronthaul network based on TWDM-PON

In this report, the mathematical model for power consumption of 5G fronthaul network with functional splitting of baseband processing is constructed, to make clear the power consumption characteristics in functional splitting. We formulate the integer linear programming problem for minimizing the total power consumption of 5G fronthaul network based on the capacity of DWDM-PON, the number of RRHs in each cell site, the amount of traffic from each RRH, physical/virtual server power comsumption characteristics, and so on. The numerical examples are shown for confirming the effectiveness of the proposed model and exhibit the relationships of functional splitting selections and power consumption.

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