I have so many problems with “Low SS UpLink”.It causes many SDCCH and TCH Drops.
Could you please tell me how can I solve this problem.
If more information is needed I can share.
1. the cell coverage is not strong enough, andmany subscribers are receiveing less than -90dBm in DL. In one word : bad coverage
2. this sector is having a hardware issue, adding extra loss in the receiving path. As a consequence, the UL RXLEV is very low, and therefore many emergency handovers and call drops must be expected.
Thanks Pix.
I think the first possibility that you mentioned is correct in this case.
Suppose we have this problem,how can I solve it?
Which tilt help us (Uptilt or Downtilt)?And what else?
what is the current value of the tilt ? (mechanical + electrical). And how far is the area you want to cover ?
How high is the site compared to this area to cover ?
After you give me these values, maybe it will appear that your tilt is good enough. In this situation, you might want to :
add one more antenna in order to do RX DIVERSITY
add two more antennas to do 4 Rx Diversity and 2 Tx diversity
change your antenna model (use one with more gain, more directivity)
add a tower mounted amplifier (a.k.a TMA or LNA)
Since the main problem is uplink, I can’t ask you to use a high power TRX : this would increase onl the DL strength, not the UL.
Regards,
Pix
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