scope:

NEN-ISO/IEC 15149-1 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.