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Industrial Data Transmission
Published in Sandeep Misra, Chandana Roy, Anandarup Mukherjee, Introduction to Industrial Internet of Things and Industry 4.0, 2021
Sandeep Misra, Chandana Roy, Anandarup Mukherjee
The new wireless networking protocol, which provides an improvement over the standard IEEE 802.11 WiFi standard, is the IEEE 802.11AH, which is also known as WiFi HaLow [165]. The IEEE 802.11AH operates on the license-free 900 MHz band for providing enhanced network coverage. Traditional WiFi uses the 2.4 GHz or the 5 GHz RF spectrum. This new protocol's power consumption is significantly low despite the higher data rates and enhanced coverage area. It uses OFDM for modulating signals on the physical medium. Channel widths of different specifications ranging from 1, 2, 4, 8, and 16 MHz are available depending on the range and use-case. Data rates of up to 347 Mbps are achievable using this protocol. Through the use of a compact MAC header format and a new medium access scheme, the IEEE 802.11AH significantly increases its throughput.
Standards and Protocols for Agro-IoT
Published in Saravanan Krishnan, J Bruce Ralphin Rose, N R Rajalakshmi, Narayanan Prasanth, Cloud IoT Systems for Smart Agricultural Engineering, 2022
S. Mythili, K. Nithya, M. Krishnamoorthi, M. Kalamani
Wi-Fi HaLow (802.11ah) is the unlicensed band focused on the extension of network coverage by using relays and optimization in power consumption using the predefined busy/idle period. The contention is also getting reduced via station grouping. The Wi-Fi wavebands highly facilitate the interoperability feature.
Battery draining attacks against edge computing nodes in IoT networks
Published in Cyber-Physical Systems, 2020
Ryan Smith, Daniel Palin, Philokypros P. Ioulianou, Vassilios G. Vassilakis, Siamak F. Shahandashti
Wi-Fi HaLow (802.11ah) [7] was designed to reduce power consumption by using wake/sleep periods and is a better choice for IoT. Furthermore, it has 1-kilometre range. However, this technology has never really taken off due to the fact that it requires a specialised access point and hardware.