UL Interference due to Repeaters in 2G (GSM)

3G / 2G
,
1

Dear Experts

We have found UL Interference due to Repeaters in 2G PGSM and EGSM bands.

Vendor is Huawei (BSC6900 R15)

Do you know any feature to help solve this problem?

1 Like
2

Try to search IRC (Interference Rejection Combining) in HEDEX. (You can find some information here: https://forum.huawei.com/carrier/en/forum.php?mod=viewthread&tid=71265)

In scenarios with interference from neighboring cells or other systems, IRC can estimate the correlation of interfering signals in the time and space. Based on the maximum signal-to-noise ratio rule and the correlation of interfering signals, IRC effectively suppresses interference, thereby increasing cell throughput by 5% to 15%.

Also try to configure baseband frequency hopping with BCCH HOP.

1 Like
3

Any similar feature for other Vendors (Ericsson, Nokia, ZTE)?

4

Have you check if the whole band is interfered or only few frequencies are interfered??

1 Like
5

SET GCELLBASICPARA: IDTYPE=BYNAME, CELLNAME=" ", UmAisSwitch=ON, EnUmAisSwitch=ON, MiccSwitch=ON, MiccEnSw=ON, MiccEnIISw=ON;

2 Likes