Wireless originates from the English language and means without cables or wires. In the context of M2M communication, the communicating devices are not connected by cable, but use other ways to transmit data.
Wireless means that something is used without the use of a cable. Well-known examples are remote controls and the home W-LAN.
This term is also frequently used in the context of M2M communication. Depending on the application, the machines or devices that communicate with each other - i.e. exchange data - are located in more or less accessible locations. Accordingly, it can be complicated and very expensive to lay and use cables for data transmission. For this reason, wireless transmission options are being sought.
One way to wirelessly transmit data from IoT and M2M devices is mobile radio. The advantage is that this technology is established, standardised and the infrastructure is available almost nationwide. And not just in Germany, but all over the world. This area-wide availability is particularly relevant for applications or devices that are constantly on the move.
However, not all mobile communications are the same. A survey by the Federal Network Agency has shown that only one of the mobile phone networks of the major network operators is available in the 4G standard on about 7.2 percent of the entire German territory. Accordingly, the risk of connection interruptions and failures increases at these locations. If, for example, sensitive health data has to be transmitted quickly, this becomes dangerous.
The investigation by the Federal Network Agency proves the relevance of corresponding M2M SIM cards for IoT and M2M projects. Because these can use not only one network, but instead the mobile networks of different network operators. Suitable SIM cards for wireless communication between machines are available at wherever SIM. Our M2M SIM cards also enable IoT devices to connect to the strongest network at a location, regardless of a particular network provider. So it's not the network provider that counts, but only the available network strength.