RU is the radio frequency unit equipment of the system, which works as the radio frequency signal processing unit, it converts the digital signal sent by the EU into a 5G NR radio frequency signal. At the same time, the upstream RF signal is converted into a digital signal and transmitted to the EU.

EU is an expansion unit, its main functions include:
· Receive the downlink baseband data sent by the DU and pass it to RU after splitting;
· Send the radio frequency data of the uplink unit to the CU / DU after combination;
· Built-in power supply circuit to supply power to RU through the photoelectric hybrid cable;
· Support cascading between expansion units;
· Support compression and decompression.

· CU/DU connects with max 4 fronthaul gateways via 10Gbps SFP+
· CU/DU supports NR cell split/merge, support one NR super cell or 4 NR standalone cells
· Low PHY function(Option7);
· Low PHY & High PHY function(Option6).

· All-in-One small cell(L1/L2/L3/Backhaul in one box)
· Baseband: Qualcomm FSM10056 SoC
· RFIC: Qualcomm SDR9000
· CPU: NXP 4 cores ARM QorIQ LS1046A
· Sync: GPS/BD,IEEE1588V2

· Supports All-in-One small cell(L1/L2/L3/Backhaul in one box)
· Supports 3GPP Option2 CU/DU Splitting(only L1/L2 in the box)
· Baseband: Qualcomm FSM10055 SoC
· AAU(RF/Antenna): Qualcomm QTM10028
· CPU: NXP 8 cores ARM QorIQ LX2080A
· Sync: GPS/BD,IEEE1588V2

This solution is a small cellular base station typically covering a small area, such as in-building (offices, shopping malls, train stations, stock exchanges, etc.).

This solution is a small cellular base station typically covering a small area, such as in-building (offices, shopping malls, train stations, stock exchanges, etc.).