Dashboard Gateway Overview: Roundtrip times

[vger]

Hi,

what exactly is the TTN dashboard looking for to display “Roundtrip time (ms)” on the page “Gateway status”/“Gateway overview”?

Comparing two gateways (different models), one of them is displaying a RTT, the other is not with the following message instead:

This gateway still does have uplink and downlink messages though:

One difference between the gateways is that the one that DOES show RTT has a GPS connected and is transmitting class B beacons, which the other one has/does not. Is this a requirement to show RTT?

Gateway SHOWING RTT:

SX1302 LoRaWAN Gateway HAT - Waveshare Wiki

Gateway NOT showing RTT:

wAP LR8 kit | MikroTik

[kersing (Jac Kersing)]

@vger

One difference between the gateways is that the one that DOES show RTT has a GPS connected and is transmitting class B beacons, which the other one has/does not. Is this a requirement to show RTT?

1. If you do not use Class B devices it is better to disable the beacons. While transmitting a beacon the gateway can not receive uplinks so using beacons effectively reduces the uplink capacity of the gateway.

2. GPS/Beacons are not related to RTT. The package forwarder and the protocol used to connect to TTN determine whether RTT can be calculated. The message regarding downlinks is misleading.

[vger]

Good thought on the class B beacons. I’m in a very low traffic area, so far I’m alone on my gateway and I’m not using class B myself.

This makes me feel a lot better about my primary gateway not having class B capability in the first place (only my “experimental” does.)

Thanks!