I did “normal” TCP/IP MQTT on top of NB-IoT connection with the Quectel BC66. So TCP/IP is possible. But I didn’t try to post a normal HTTP request.
LWM2M is implemented on top of CoAP and UDP. By this it works perfectly on NB-IoT. It is also supported by Quectel BC66. We tested it successfully with Eclipse Leshan server and the Nokia Impact LWM2M server.
The GSMA offers a “Mobile IoT Deployment Map”. You can click on a country and see various information per technology type e.g. which operator deployed that network type and even URL’s of the operators’ maps for that country (if the MNO made it available). GSMA is improving and enhancing it continuously.
Unfortunately there is no interactive map for the coverage of NB-IoT in Poland.
However, T-Mobile Poland has published a press release in which they announced the nationwide coverage (coverage of 94%).
They also published a map where you can get an overview of the coverage in different regions:
In general, other networks such as LoRa and Sigfox are also still in their build-up. NB-IoT has the advantage of being able to use existing LTE base stations, which will allow for sufficiently dense network with good indoor penetration, especially in urban regions.
NB-IoT services on Deutsche Telekom’s live networks are currently available in Germany, the Netherlands, Austria, Poland, Hungary, Czech Republic, Greece, Slovakia, Croatia and North Macedonia.
In the Netherlands, Austria, Slovakia, Croatia, Greece and Poland a nationwide coverage has already been achieved, with Germany being close to finalization of the rollout, covering today >98% of the population.
For more information visit Deutsche Telekom’s coverage maps.
Roll-out has also already started in Hungary and Czech Republic. NB-IoT is also available in Europe through other operators, i.e. Finland, Belgium, Denmark, Norway, Sweden. For more information visit the GSMA coverage map.
Deep indoor penetration is enabled by robust narrowband modulation techniques and redundancy (repetitions of transmissions). Dependent on the coverage situation of the device three different Coverage Extension levels (CE0, CE1, CE2), can be used. The higher the CE level the…
more repetitions of the transmitting signal
higher the power consumption of the device
lower the throughput
higher the latency