Multi-path Error Limits of GSM 900 at RX Noise Levels in Vietnam

01:18, 11/07/2024

On December 08, 2016, the Ministry of Information and Communications issued Circular 30/2016/TT-BTTTT stipulating the National Technical Regulations on GSM mobile communication base station equipment.

According to the provisions of Circular 30/2016/TT-BTTTT, the cross-path error limits of GSM 900 at the RX noise level include:

Channel Type	Error Measurement Parameter	Error Rate under Specified Transmission Conditions
TU50 (no SFH)	TI5 (no SFH)
FACCH/F	(FER)	9.5 %	9.5 %
E-TCH/F43.2 NT	(BLER)	10 %	10 %
E-TCH/F32.0 T	(BER)	0.1 %	0.1 %
E-TCH/F28.8 T	(BER)	0.1 %	0.1 %
E-TCH/F28.8 NT	(BLER)	10 %	10 %
TCH/FS	(FER)	6.0α %	6.0α %
- class lb	(RBER)	0.40/α %	0.40/α %
- class II	(RBER)	8.0 %	8.0 %
PDTCH/MCS-5 to 6	(BLER)	10 %	10 %
PDTCH/MCS-7	(BLER)	10 %	10 %
PDTCH/MCS-8	(BLER)	30 %	30 %
PDTCH/MCS-9	(BLER)	30 %	30 %
PDTCH/UAS-7 to 9	(BLER)	10 %	10 %
PDTCH/UAS-10	(BLER)	10 %	10 %
PDTCH/UAS-11	(BLER)	10 %	10 %
PDTCH/UBS-5 to 10	(BLER)	10 %	10 %
PDTCH/UBS-11	(BLER)	10 %	10 %
PDTCH/UBS-12	(BLER)	10 %	10 %

See related provisions at Circular 30/2016/TT-BTTTT effective from May 1, 2017.

- Thanh Lam -

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