Network Device Spectrum Availability Determination
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Solution Overview
Problem
When a network device fails to effectively perceive another network device, it may interfere with communication between the network device and a terminal, particularly in scenarios where the network device uses the communication spectrum of the other network device.
Innovation Solution
A network device sends configuration information to a terminal to measure an unlicensed spectrum, and receives feedback information to determine the availability of that spectrum, thereby avoiding interference from other network devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network device uses the communication spectrum of another network device, then spectrum utilization is improved, but communication quality deteriorates due to interference from the other network device
Solution Approach 1:
The network device performs preliminary sensing of the unlicensed spectrum before communication to detect whether another network device is present. This advance detection allows the system to prepare appropriate actions (switching spectrum or adjusting parameters) before interference occurs, thus maintaining both high spectrum utilization and communication quality
Solution Approach 2:
The system implements a feedback mechanism where the network device continuously monitors the unlicensed spectrum during communication and adjusts its transmission parameters or switches spectrum based on detected interference levels. This closed-loop control ensures that spectrum utilization remains high while communication quality is maintained through real-time adjustments
2Measurement precision
If the network device scans the unlicensed spectrum, then interference detection capability is improved, but time consumption increases
Solution Approach 1:
The network device performs partial spectrum sensing by monitoring only specific frequency bands or time slots within the unlicensed spectrum rather than conducting exhaustive full-spectrum scans. This selective monitoring approach provides sufficient interference detection capability while significantly reducing the time consumption compared to complete spectrum analysis
Data Source
Figure 1~3B
Figure 3C~6
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AI summary
The present disclosure relates to the field of wireless communications technologies, and in particular, to a network device, a terminal, and a method for determining availability of a communication spectrum, so as to resolve the following problem: When a network device fails to effectively perceive another network device, but uses a communication spectrum of the another network device to communicate with a terminal, the communication may be interfered with by the another network device. The network device includes: a transceiving module, configured to: send control information to a target terminal to instruct the target terminal to measure a first spectrum, where the first spectrum is an unlicensed spectrum for the network device; and receive feedback information that is reported by the target terminal and obtained by measuring the first spectrum; and a processing module, configured to determine, according to the feedback information received by the transceiving module, whether the first spectrum is available. By measuring the unlicensed first spectrum, the terminal may more accurately determine whether another network device is using the unlicensed first spectrum, so as to effectively avoid interference from the another network device.