Different Between Driver Mode

I am not clear driver mode between TDD PTP and TDD .So,Please kindly explain me.Why RSSI is different AP from SM.

TDD PTP is limited TDD mode where only one SM is allowed to be registered on AP.

Thank you.


Thanks for your information.But why RSSI is dirfferent betweeen AP and SM.Please .

You can find info-bubble on AP side which says:

The first number is Downlink RSSI and indicates the estimated RSSI that this SM measures for the AP. 
The second number is Uplink RSSI and indicates the RSSI that the AP measures for this SM.

SM sents to AP only SNR measured in DL, and AP calculate RSSI on SNR received form SM and NF measured by AP basis.

Thank you.