UWB Ranging Channel Split for Lower Power Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Ultra-wideband (UWB) modules in devices experience high power consumption due to complex ranging functions.
Innovation Solution
Implementing ranging control information exchange through a narrowband channel and ranging operations through a wideband channel, reducing power consumption by utilizing a first channel with a bandwidth less than the second channel for measurement results.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a user equipment camps on a frequency without performing cell selection or reselection, then power consumption is reduced, but the uplink and downlink frequency may be inconsistent causing communication failure
Solution Approach 1:
The network side performs preliminary configuration by pre-configuring multiple downlink frequencies and their corresponding uplink frequencies for the user equipment. This preliminary action allows the user equipment to camp on a frequency without performing cell selection or reselection, reducing power consumption while ensuring the uplink and downlink frequencies are consistent through pre-established correspondence relationships.
Solution Approach 2:
The network side acts as an intermediary by maintaining and managing the correspondence relationship between downlink frequencies and uplink frequencies. When the user equipment needs to communicate, the network side uses this pre-configured correspondence to ensure the correct uplink frequency is used for the selected downlink frequency, preventing communication failure while allowing the user equipment to operate in a low-power state.
2Reliability
If the user equipment performs cell selection or reselection to ensure frequency consistency, then communication reliability is improved, but power consumption increases
Solution Approach 1:
Instead of performing cell selection or reselection at the moment of communication need, the network side performs the frequency correspondence configuration in advance. This preliminary action eliminates the need for real-time cell selection operations by the user equipment, thereby maintaining communication reliability while avoiding the power consumption associated with cell selection and reselection processes.
3Reliability
If the network side configures multiple downlink frequencies and corresponding uplink frequencies, then frequency consistency is ensured, but signaling overhead increases
Solution Approach 1:
The network side merges the configuration of multiple downlink frequencies and their corresponding uplink frequencies into a single pre-configuration operation. By combining these frequency correspondence relationships into pre-configured sets, the system ensures frequency consistency for multiple frequencies while reducing the signaling overhead that would otherwise be required to manage each frequency individually during operation.
Data Source
Figure 1~2
Figure 3
Figure 4
AI summary
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.