COMMUNICATION METHOD, APPARATUS, AND SYSTEM

Embodiments of this application provide a ranging method and apparatus, and a system. The solution is applied to a UWB-based wireless personal area network system, a sensing sensing system, and the like. The method includes: A first device sends ranging control information to a second device through a first channel, where the ranging control information is used to configure a ranging frame; and the first device receives and/or sends the ranging frame through a second channel, where a bandwidth of the second channel is greater than a bandwidth of the first channel. Based on the foregoing solution, the first device and the second device may exchange the ranging control information and a measurement result through the first channel, and perform ranging through the second channel. Because information exchange of the ranging control information and the measurement result is completed through the first channel, and the bandwidth of the first channel is less than the bandwidth of the second channel, power consumption of the device can be reduced.