Fujitsu 5GRUDB3 User Manual page 22

RU Hardware Feature
RU Specifications
Table 3 (Cont.)
Measurement Function
Item
Alarm/control
Table 4
ORAN
Item
Synchronization
Internet protocol
Service interruption at SW
upgrading
Mean Time Between
Failures (MTBF)
YRR (FRR)
·
Issue 1.1, May 2021
Release 1.0
Specification
The RU reports an alarm when the following status changes occur on the RU. The RU provides alarm to the
EMS, in case of the RU HW failure.
▪ TX Power status change
▪ Cold start
▪ Fronthaul Port Status Change
▪ Node Shutdown
▪ Channel Frequency Change
▪ RU Parameter Change
▪ Node Voltage out-of-range condition
▪ Node Temperature out-of-range condition
▪ RU generates high-temperature, low-temperature and shutdown temperature alarms, which report to the
EMS.
▪ Sync status changes (fail, not locked, or out-of-sync, disabled)
▪ Node Synchronization Lock Status Changed
▪ Node Internal Clock Status Change
▪ Node PTP Master/Slave Status Change
▪ RU Local Access Attempt
Specification
The RU supports the following standards:
▪ Telecom Slave Clock (T-TSC) to G8275.1. RU provides additional noise filtering to filter front-haul interface
dynamic noise, which helps to meet 3GPP frequency accuracy requirement
▪ RU maintains sync holdover with SyncE, in case of GPS or IEEE 1588 loss for 24 hours.
▪ RU supports G.8275.1 synchronization.
▪ RU supports IEEE 1914.1, ITU-T G.826x, G.827x series.
▪ RU can connect to a DU on site located remotely in a data center as far as 200 microseconds away.
RU supports IPv4 and IPv6.
< 90 sec
Service interruption is defined as the preparation for the RU to establish the M/S-Plane with the host device.
> 175,320 hours at RU internal temperature.
RU MTBF exceeds 20 years or higher.
< 2%
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