Radio Access Network Radar Detection Coordination
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in coordinating channel availability in unlicensed bands, particularly in the 5 GHz band, due to the need for individual devices to perform frequent radar signal checks, leading to resource wastage and potential interference with radar systems.
Innovation Solution
A coordinated approach where wireless devices share radar detection data with a central network, allowing the radio access network to provide channel status information and recommendations, thereby reducing unnecessary channel checks and optimizing channel selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If individual devices perform frequent radar signal checks on unlicensed channels, then channel availability can be determined, but resource wastage and potential interference with radar systems occur
Solution Approach 1:
The patent combines radar detection functions into a centralized network entity that serves multiple wireless devices. Instead of each device independently scanning for radar signals, the network entity performs unified detection and shares results with connected devices, eliminating redundant scanning operations and reducing overall resource consumption.
Solution Approach 2:
The network entity acts as an intermediary between wireless devices and the radar detection process. It receives channel availability requests from devices, performs radar signal checks on behalf of multiple devices, and distributes the results back to them, thereby mediating the resource consumption and interference issues.
2Reliability
If individual devices perform frequent radar signal checks, then channel status can be determined, but interference with radar systems increases
Solution Approach 1:
Multiple individual radar detection operations are merged into a single centralized detection process. The network entity performs radar signal checks once and shares the results with multiple wireless devices, thereby reducing the total number of detection operations and minimizing interference with radar systems while maintaining reliable channel status information for all devices.
3Loss of information
If devices independently scan channels for radar signals, then channel information is obtained, but time is wasted on redundant checks
Solution Approach 1:
The network entity performs radar detection in advance and stores the results for future use. When wireless devices need channel status information, they retrieve pre-obtained data from the network entity rather than performing new detection operations, thereby avoiding time-consuming redundant channel checks.
Solution Approach 2:
The network entity implements a feedback mechanism where radar detection results are shared with wireless devices. This feedback loop allows devices to obtain accurate channel information without independently repeating detection processes, reducing the time required for channel status acquisition.
Data Source
AI summary
A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine whether radar signals are present on one or more channels. The apparatus is configured to transmit a channel feedback report that includes channel information for each of the one or more channels based on the determination of whether radar signals are present on the one or more channels. The channel information for each of the one or more channels includes at least one of a time at which radar signal detection was attempted, a frequency range of a detected radar signal, a set of radar signal characteristics, a received radar vector, a geographical location of the wireless device when radar signal detection was attempted, or an indication of wireless activity.