Some helpful questions answered on Communications Technology:

  • What technologies are used to collect meter data?

    Metrix uses a range of technologies to collect meter data:

    GPRS – This a cellular solution typically used for Time of Use Metering for large commercial customers. Its benefits are that it can be installed in 'hard to get to' locations, such as rugged terrain or semi rural areas. It is a more costly solution compared with radio mesh, due to communication and data transfer costs.

    3G – 3G is the next step up in cellular communication and data transfer technology (up to 14.4Mbit/sec, average 300-400Kbps). Metrix currently working towards upgrading a multitude of AMI communication technologies to a 3G platform. 

    Radio Mesh – The better option when deploying in high density areas, a radio mesh network allows each meter to 'talk' and transfer data to one another, or to a centralised location, reducing the need for costly cellular communication. Meters must be deployed within radio signal range of each other to keep the network fully functional. Data storage devices also 'talk' to meters and collect their meter readings as frequently as every half-hour where required.

  • What types of Smart Metering communications is Metrix using?

    Metrix predominantly uses two types of communication, GPRS mobile phone communications and low power radio mesh. GPRS cell phone communications is very similar to a normal hand held mobile phone. Low power radio mesh operates at a similar frequency to a mobile phone and operates at 25% of the power output of a mobile phone. A low volume of sites may need additional consideration. Metrix is well placed to advise on potential solutions.

  • How has Metrix selected its radio frequencies?

    Metrix has selected radio frequencies in accordance with the Ministry of Economic Development requirements. All radio frequency use has met council RMA requirements.