Xiaomi Mi 15S Pro first revealed: UWB technology on Mi Mix 4 returns

 blogger Digital Chat Station hinted that Xiaomi will launch a small iterative product in the digital series, Xiaomi 15S Pro, in the first half of next year . The main differences between it and Xiaomi 15 Pro are that the chip has been changed, the flash is slightly convex, and it is equipped with UWB technology.

According to information, Xiaomi MIX 4, which was launched in 2021, was the first to be equipped with UWB technology. The full English name of UWB is “Ultra Wide Band”, which means “ultra-wideband communication”.

Ultra-wideband technology comes from pulse communication technology. It is called “ultra-wideband” because the bandwidth used is above 500MHz. At the same time, because its pulse time is very short, a large amount of data can be sent in a short time, and the power will not be too high.

It is reported that UWB, Bluetooth and WiFi are all wireless communication technologies, but UWB has many technical advantages. First, it has a large bandwidth and a high frequency (3.1GHz-10.6GHz), which makes it highly anti-interference and will not be confused by other communication signals such as WiFi, Bluetooth, and base stations. Second, it has high accuracy, because the pulse signal is at the nanosecond level, and the accuracy can be controlled at the centimeter level during positioning. Third, UWB does not need to work in real time, and its power consumption is much lower than that of WiFi and cellular networks.

In specific applications, we pick up the mobile phone and point it at the smart device, and the corresponding control interface will pop up automatically. For example, if the mobile phone is pointed at the fan, the fan can be directly controlled. When the mobile phone is turned to the TV, the control card automatically switches to the interface for controlling the TV. In addition, by pointing the mobile phone at the smart device, the screen of the mobile phone can be directly projected to the TV, laptop and other devices, or the playing music can be projected to the speaker.

It is worth mentioning that the iPhone 11 model released in 2019 is also equipped with UWB technology. The official claims that the phone has spatial perception capabilities. Simply put, it can sense direction. For example, when using AirDrop, it will identify the distance of the delivery device, and the closer the device, the higher the priority.

For Xiaomi, UWB can transform the mobile phone into a car key, allowing car owners to quickly locate their vehicles in the parking lot. Bluetooth and NFC are essentially near-field communications and do not have precise capabilities. They can help you unlock the vehicle, but it is difficult to help you find the vehicle accurately.