Dynamic Carrier Resource Adjustment for Spectrum Utilization
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Solution Overview
Problem
Current LTE-U systems face low spectrum resource utilization rates due to inefficient bandwidth allocation, particularly when competing with WiFi for unlicensed spectrum resources, leading to wasted resources.
Innovation Solution
A method where transmission nodes dynamically adjust carrier resource sizes based on detected information, allowing for data transmission through changed carriers, and User Equipment (UE) determines available resources by receiving signaling or signals, detecting Downlink Control Information (DCI) and full-bandwidth signals to optimize spectrum usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LAA system uses pre-configured 20 MHz system bandwidth, then system stability is maintained, but spectrum resource utilization rate decreases when only part of the bandwidth is available
Solution Approach 1:
The patent implements dynamic bandwidth adaptation by allowing the LAA system to change its operating bandwidth from a pre-configured 20 MHz to smaller bandwidths (e.g., 5 MHz, 10 MHz) based on real-time detection of spectrum availability. This dynamic adjustment resolves the contradiction by maintaining system stability through controlled adaptation while improving spectrum utilization by matching bandwidth to actual available resources.
Solution Approach 2:
The patent changes the system bandwidth parameter from a fixed 20 MHz configuration to variable bandwidths based on detected spectrum conditions. By monitoring the availability of unlicensed spectrum and adjusting the bandwidth parameter accordingly, the system achieves both stability (through systematic parameter management) and improved resource utilization (through parameter adaptation to actual conditions).
2Productivity
If LAA system occupies entire 20 MHz resource when WiFi occupies only 5 MHz, then spectrum resource utilization rate increases, but interference with WiFi system increases
Solution Approach 1:
The patent applies local quality by allowing different bandwidth allocations in different frequency regions. Instead of uniformly occupying the entire 20 MHz band, the LAA system detects WiFi occupancy in specific sub-bands and adapts its transmission to use only the available portions, thereby improving overall spectrum utilization while minimizing interference in WiFi-occupied regions.
Solution Approach 2:
The system dynamically adjusts its bandwidth occupation based on real-time detection of WiFi activity. When WiFi is detected occupying only part of the spectrum, the LAA system dynamically modifies its transmission bandwidth to match available resources, resolving the contradiction between maximizing resource utilization and minimizing interference through adaptive behavior.
Data Source
AI summary
The present invention provides a resource use method, device and system. The method comprises: a transmission node dynamically changes, according to information detected on a current carrier the size of a resource corresponding to the carrier, and uses the changed carrier to perform data transmission. The present invention solves the problem of lowness of spectrum resource utilization rate, and increases the spectrum utilization rate.