a high-rate data stream into a number of low-rate streams that are transmitted on parallel subcarriers [secondary modulated signal frequencies within the primary frequency, i.e. carrier]” [2] ; and the system by which “a set of … wireless stations [access points] forms a user group and uses different spatial streams for simultaneous transmission and reception” [3] . OFDMA grants Wi-Fi 6 unprecedented throughput for multi-device, bi-directional connections across the given smart home network; moreover, MU- MIMO allows the optimal use of both Wi-Fi 6 routers as well as Wi-Fi 6-enabled smart devices. Both MU-MIMO and OFDMA therefore facilitate Wi-Fi 6’s capacity for multiplexing (discussed below), which is the networking technique that allows multiple analogue and digital signals to be transmitted over a shared connection. Multiplexing and its benefits to smart homes Naturally, if too many connected devices are introduced to any Wi-Fi network, the data speed of each product slows as a result. Wi-Fi 6 is designed to combat this problem by offering, not only four more spatial streams than Wi-Fi 5, but both downlink (router to device) and uplink (device to router) multiplexing.
the Wi-Fi 6 technology include high speeds of up to 9.6 gigabytes per second, 75% less latency than Wi-Fi 5, and a high integration of wired and wireless signals. Similarly, the OBSS management feature of Wi-Fi 6 is able to minimise network congestion (OBSS stands for overlapping basic service sets, which is when neighbouring access points interfere with each other and affect the performance of the given wireless local area network, or WLAN). Unlike older versions of Wi-Fi technology that wait for a clear channel before transmitting, the Wi-Fi 6 technology can identify and ignore noise within the local network and enable continued signal transmission. The combination of OBSS and OFDMA (discussed in the next section) features in Wi-Fi 6 offers the technology high efficiency for effective communication in crowded networks. Additionally, conventional Wi-Fi routers send wireless signals in all directions. However, Wi-Fi 6 offers a beamforming feature, which allows its router to efficiently detect the location of a device requesting data and transmits a more localised data stream in the direction of the device. With an improved Wi-Fi Protected Access 3 (WPA3) security protocol and an added Dragonfly Key Exchange system (or SAE – Simultaneous Authentication of Equals), Wi-Fi 6 offers the highest and most robust
security option ever.
On top of this, Wi-Fi 6’s target wake time (TWT) feature allows Wi-Fi 6 technology to increase the device’s battery life. Devices can spend less time and energy searching for a wireless signal through the TWT feature that allows Wi-Fi 6 routers to effectively communicate with the Wi-Fi radio of the devices and only activate it when it needs to be awake. OFDMA and MU-MIMO for multiplexing and bi- directional connections Wi-Fi 6 has the ability to connect to devices with better efficiency than its predecessors. This is chiefly due to Wi-Fi 6’s ability to carry 12 spatial streams (also known as data streams), on the two frequency bands: 2.4GHz and 5GHz (this is known as a dual-band configuration). In contrast, Wi-Fi 6’s closest counterpart, Wi-Fi 5, has a limit of eight spatial streams. Such streams are independent streams of data that travel between a transmitter and a receiver. 802.11ax’s capacity to carry multiple spatial streams is a product of its two core features: OFDMA (orthogonal frequency- division multiple access) and MU- MIMO (multi-user, multiple-input, multiple-output). The IEEE defines OFDMA and MU-MIMO as respectively “a modulation scheme that converts
we get technical
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