Fronthaul and Backhaul Challenges

//Fronthaul and Backhaul Challenges

Fronthaul and Backhaul Challenges

Fronthaul and Backhaul Challenges

C-RAN still has its challenges. The fronthaul requires a very high-bandwidth and low-delay optical transport between the BBUs and RRUs, capable of carrying at least 2 Gbps for each RRU on the link (for a single 20 MHz 2*2 MIMO LTE carrier).

The delay requirements, in particular, also restrict the maximum distance the BBUs can be located from the RRUs, which limits the area that the C-RAN can serve.

The overall cost and reliability of the fronthaul network must be carefully considered.

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