WiFi6 - TWT

TWT enables APs to schedule communication with devices, negotiate when and how frequently the devices will wake up to send or receive data, and group terminals to different TWT periods. TWT reduces time required for keeping the antenna powered on for signal transmission and searching, thereby decreasing battery power consumption and prolonging the battery life, and reducing the number of devices contending on radio resources.
Wi-Fi 6 is applicable to various types of intelligent devices such as smart water meters, smoke sensors, and door control devices in future intelligent building scenarios, as well as machine tools, automatic guided vehicles (AGVs), and warehousing code scanning devices in future intelligent factory scenarios. Owing to TWT, each device can separately build a "wakeup protocol". A terminal device enters the operating state only after receiving its own wakeup instructions and stays in the sleep state in the rest of time. This makes IoT devices requiring large-bandwidth communication possible, for example, intelligent office devices. TWT can reduce power consumption by up to 7 times.
However, not all devices can be benefited from TWT. For example, a laptop needs to continuously access the Internet, so it is unlikely to be much benefited from this function (or perhaps TWT is more helpful to the laptop in the sleep state). This technology is more beneficial to small devices that have low consumption and do not need to update their own states on a frequent basis.
TWT shows the determination of Wi-Fi 6 to embrace IoTs.