Atmospheric ducting impact in TDD layers

Anyone know, why Ducting issues comes on TDD layer only?

Ducting means High SINR.

HI managuli would you please share NOKIA parameter

Hi Experts.

For LTE TDD ducting interference, the characteristic sequence are sent by eNB upon detecting sloping interference.

So SSF 7 to 5 is triggered when the no of characteristic sequence is > 8.

I donā€™t understand the statementā€¦

How the number of sequence identification tigger SSF7 to 5?

Basically itā€™s Uplink interference of a Downlink sequence.

Affects the entire transmission.

Yes, but I want to understand what is the correlation with the No of Sequence detected.

For e.g., if I change it into 12, what will be the impact?

When RI is detected by a base station, it starts transmitting a special Sequence of RIM reference signal.

This signal can be used by aggressors to identify the victim base station and how many symbols it interferes.

It may additionally be used to indicate from the victim to the aggressor if enough RI mitigation has been applied or not.

The RIM reference sequence signal may also be sent by the aggressor after it has applied RIM, to indicate to the victim that the tropospheric duct still exists or stopped.

Thanks, but my question is about LTE TDD, not 5G.