7/17/2019 Unavailability Faults

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6) Unavailability faultsPossible causes:- Incorrect data configuration- Abnormal transport resources- Abnormal RF resources- Limited capacity or capability- Faulty HW

SOLVEData configuration (power, bandwidth and netwok related are most common causes)- Incorrect UL/DL subframe ratio or incorrect special subframe radio in TDD mode- Incorrect cell power configuration- Incorrect cell frequency configuration- Incorrect cell preamble format configuration- Incorrect cell UL/DL cyclic prefix configuration- Incorrect cell bandwidth configuration- Incorrect cell beamforming algorithm switch configuration- Incorrect cell operator information configuration- Incorrect cell antenna mode configuration- Incorrect CPRI line rate configuration- Incorrect cell network-related configuration

Abnormal transport resources

- SCTP link faulty or not configured- IP path faulty or not configured- Other TXON faults

Abnormal RF resources- Check CPRI links between RF units and LBBPs- Check working status of RF units- Check RF unit versions match the main control board version- Check line rates of CPRI links are successfully negotiated- Check RF networking is consistent with data configuration

Limited capacity or capability- HW or SW specification is limited - licensed capacity or capability - le

ading to cell unavailability

Faulty HW- Main control board, LBBP, RF unit, other hardware