“If you do not need to follow the OMS system specification they can implement any proprietary wireless solution benefit by using the Wireless MBUS module from Radiocrafts. They are free to use the module as they like, as long as they take into account the regulatory requirements on TX duty cycle. Other than that they can wake up the Module as much as they like and transmit MBUs packets. The 15 min period I mentioned to you was if you follow the OMS, and this period enable 15-20 years battery power metering systems.
The Wireless MBUs is described in en European Norm EN13757:4 (Wireless Meter readout) and EN13757:3 (Application layer). In addition you can download the OMS specification for free
Last Update: November 16, 2017