3. Work Cycle
Beside this the bridge is naturally most economical when multiple meters per single bridge
can be collected and forwarded via LoRWAN. Although for some applications a 1:1 setup,
e.g. one bridge per meter, may deliver enough benets to justify the invest.
For hourly or even more frequent meter data uploads, as requested by some of our custom-
ers, LoRaWAN isn't the perfect match from a technology point of view. The same holds
for scenarios where hundreds of meters are expected to be transfered by a single bridge,
e.g. in `sub-metering' applications with tons of installed heat cost allocators. For such more
demanding cases Lobaro can oer better solutions using higher bandwidth transmission tech-
niques like NB-IoT
or classical 4G/LTE. Contact us if you need such a alternative solution
by sending your request to
either English or German is ne.
3. Work Cycle
Initial
LoRaWAN
Join
wMBUS
Collection
LoRaWAN
Transfer
Sleep
Cron expression
Figure 2: The ve phases of the wMBUS Bridge Workow
The Bridge has a simple work cycle that consists of ve phases. It is illustrated in gure 2.
3.1. Initial Phase
This is the phase that is executed after the device is started of restarted. The Bridge performs
a quick self test which you can easily spot by the green internal LED ashing. After that,
the conguration is evaluated. If successful, the LoRaWAN Join phase is executed next.
3.2. LoRaWAN Join Phase
If the Bridge is congured to use over the air activation (OTAA), the OTAA join is performed
at this point. The device will repeatedly try to join its LoRaWAN network until the process
is successful. It then enters the Data Collection Phase.
If the Bridge is congured to use ABP instead of OTAA, this phase is left immediately and
the Data Collection Phase is entered according to the cron conguration.
3
Narrowband IoT
wMBUS over LoRaWAN Bridge
7