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Zigbee is an IEEE 802.15.4-based specification for a suite of high-level communication protocols used to create personal area networks with small, low-power digital radios, such as for home automation, medical device data collection, and other low-power low-bandwidth needs, designed for small scale projects which need wireless connection.
NFC operates at slower speeds than Bluetooth and has a much shorter range, but consumes far less power and doesn't require pairing. [90] NFC sets up more quickly than standard Bluetooth, but has a lower transfer rate than Bluetooth low energy. With NFC, instead of performing manual configurations to identify devices, the connection between two ...
Many Zigbee/IEEE 802.15.4-based wireless data networks operate in the 2.4–2.4835 GHz band, and so are subject to interference from other devices operating in that same band. The definition is for 16 channels numbered 11–26 to occupy the space, each 2 MHz wide and spaced by 5 MHz.
True 3G systems such as EV-DO, W-CDMA (including HSPA and HSPA+) provide combined circuit switched and packet switched data and voice services from the outset, usually at far better data rates than 2G networks with their extensions. All of these services can be used to provide combined mobile voice access and Internet access at remote locations.
Zigbee; Standardisation Proprietary Proprietary Standard Standard Standard Topologies Point-to-point, star, tree, mesh [3] Mesh: Point-to-point, scatternet Point-to-point, star, mesh Mesh Band 2.4 GHz 2.4 GHz and 900 MHz (varies slightly per country) 2.4 GHz 2.4 GHz 2.4 GHz (+ sub-GHz for Zigbee PRO) Range 30 metres at 0 dBm [11] 10–100 metres
This 2023 model improves on the already-great 2021 version in a few ways: It has a faster processor and support for more smart-home devices (namely those compatible with Matter, Thread and Zigbee).
Wireless mesh architecture is a first step towards providing cost effective and low mobility over a specific coverage area. Wireless mesh infrastructure is, in effect, a network of routers minus the cabling between nodes. It is built of peer radio devices that do not have to be cabled to a wired port like traditional WLAN access points (AP) do ...
This is the largest known range attained with this technology, improving on a previous US record of 201 km (125 mi) achieved last year in U.S. The Swedish space agency attained 315 km (196 mi), but using 6 watt amplifiers to reach an overhead stratospheric balloon. [13]