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Contention in a wireless or noisy spectrum, where the physical medium is entirely out of the control of those who specify the protocol, requires measures that also use up throughput. Wireless devices, BPL, and modems may produce a higher line rate or gross bit rate, due to error-correcting codes and other physical layer overhead. It is ...
The Wi-Fi Alliance provides certification testing in two levels: [8] Mandatory: Core MAC/PHY interoperability over 802.11a, 802.11b, 802.11g, and 802.11n (at least one). Wi-Fi Protected Access 2 (WPA2) security, [9] which aligns with IEEE 802.11i. WPA2 is available in two types: WPA2-Personal for consumer use, and WPA2 Enterprise, which adds ...
Wi-Fi (/ ˈ w aɪ f aɪ /) [1] [a] is a family of wireless network protocols based on the IEEE 802.11 family of standards, which are commonly used for local area networking of devices and Internet access, allowing nearby digital devices to exchange data by radio waves.
Many different systems take advantage of existing wireless infrastructure for indoor positioning. There are three primary system topology options for hardware and software configuration, network-based, terminal-based, and terminal-assisted. Positioning accuracy can be increased at the expense of wireless infrastructure equipment and installations.
Since the speed of radio waves (speed of light) [78] is constant and independent of the satellite speed, the time delay between when the satellite transmits a signal and the ground station receives it is proportional to the distance from the satellite to the ground station. With the distance information collected from multiple ground stations ...
802.11 Beacon frame. A beacon frame is a type of management frame in IEEE 802.11 WLANs. It contains information about the network. Beacon frames are transmitted periodically; they serve to announce the presence of a wireless LAN and to provide a timing signal to synchronise communications with the devices using the network (the members of a service set).
MT6630 (2014) is a five-in-one combo wireless SoC integrating dual-band 802.11a/b/g/n/ac, advanced Wi-Fi Direct and Miracast support, Bluetooth 4.1, ANT+, tri-band GPS and FM transceiver. It is intended to be paired with chips like the MT6595 octa-core smartphone processor which features an integrated 4G modem but no built-in Wi-Fi/Bluetooth ...
Machine to machine (M2M) is direct communication between devices using any communications channel, including wired and wireless. [1] [2] Machine to machine communication can include industrial instrumentation, enabling a sensor or meter to communicate the information it records (such as temperature, inventory level, etc.) to application software that can use it (for example, adjusting an ...