U-NET

U-Net is Wireless communication standard largely based on IEEE 802.15.4 standard which is an IEEE technical specification defining the operation of low-rate wireless personal area networks (LR-WPANs). It specifies the physical layer and media access control for LR-WPANs, and is maintained by the IEEE 802.15 working group, which defined the standard since 2003. It is the basis for the Zigbee, ISA100.11a,, 6LoWPAN, Thread and SNAP specifications, each of which further extends the standard by developing the upper layers.

IEEE802.15.4 intends to offer the fundamental lower network layers of a type of wireless personal area network (WPAN) which focuses on low-cost, low-speed ubiquitous communication between devices. It can be contrasted with other approaches, such as Wi-Fi, which offer more bandwidth and requires more power. The emphasis is on very low cost communication of nearby devices with little to no underlying infrastructure, intending to exploit this to lower power consumption even more.

With IEEE802.15.4 as its underlying layers, U-Net offer key features such as:

-Two-way communication
-Low power consumption for battery devices
-Reliable connection; periodic check, transmission retries and collision avoidance per IEEE802.15.4 defined CSMA/CA
-Wider wireless range
-Secure communication using Advanced Encryption Standard (AES)