AT+CGEQOSRDP bitrate units

[JordanYates]

The documentation for the QoS dynamic parameters command "+CGRQOSRDP" specifies that the uplink and downlink maximum bitrates are in units of kbps, with a maximum value of 65280000 kbps (65 Terabits/sec).

When run on a nRF9151 connected to a local network, the command returns `+CGEQOSRDP: 0,7,,,300000,300000`, implying that the maximum bitrate for both uplink and downlink is 300Mbit.

This seems so far out of the range of achievable bitrates that I am wondering whether the documentation has mistaken kbps for bps.

If the units were instead bits per second, this would be reported values of 300kbps, which is roughly equal to the bitrates that I am able to achieve on LTE-M (~200 kbps).

Can you please confirm the units for the command, and if the unit really is kbps, please provide some explanation of what the value is actually describing, since it is definitely not an achievable application bitrate.

[Håkon Alseth]

Hi,

 

It looks like the network is giving you the LTE 4G theoretical max. of 300 Mbit?

Here's what I get in my network (LTE-M):

+CGEQOSRDP: 0,9,,,2048,1024

 

Which mfw version are you testing with?

 

Kind regards,

Håkon

[JordanYates]

The reported modem firmware version is
%SHORTSWVER: nrf91x1_2.0.2

The connection evaluation result is
%CONEVAL: 0,1,7,34,15,25,"08C3BD0C","50501",67,9410,28,0,0,20,1,1,119

MCC 505 MNC 01 is Telstra, the primary carrier in Australia

[Håkon Alseth]

Hi,

 

Here's with Telia in Norway:

+CGEQOSRDP: 0,9,,,256000,150000

 

I get the same as you if I roam to telia (MCC MNC: 242 02), but if I connect to Telenor (MCCMNC: 242 01), I get the expected PHY speeds for LTE-M, ie. 2/1 MBit. I would check with your network provider on this topic.

 

Kind regards,

Håkon

[JordanYates]

I think this answers enough of my original question, the reported bitrates are in kbps, but the values cannot be trusted in general, only on certain networks.