scope:

This part of ISO/IEC 15149 specifies the physical layer and media access control layer protocols of wireless network over a magnetic field in a low frequency band (~300 KHz) for wireless communication in harsh environment (i.e., around metal, underwater, underground, etc.).

The physical layer protocol is designed for the following scope:

- low carrier frequency for large magnetic field area and reliable communication in harsh environment;

- simple and robust modulation for a low implementation cost and error performance;

- variable coding and bandwidth for a link adaptation.

The media access control layer protocol is designed for the following scope:

- simple and efficient network topology for low power consumption;

- variable superframe structure for compact and efficient data transmission;

- dynamic address assignment for small packet size and efficient address management.

This part of ISO/IEC 15149 supports several Kbps data transmission in wireless network within a distance of several meters. It can be applied to various services such as the following areas:

- environmental industry to manage pollution levels in soil and water using wireless underground or underwater sensors;

- construction industry to monitor the integrity of buildings and bridges using wireless, innercorrosion sensors;

- consumer-electronics industry to detect food spoilage in wet, airtight storage areas and transfer the sensing data from the inside to the outside;

- agricultural industry to manage the moisture level as well as mineral status in soil using wireless, buried sensors;

- transportation industry to manage road conditions and traffic information using wireless, underground sensors.