Wireless Device Frequency Priority Adjustment via Channel Busy Ratio
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently supporting New Radio (NR) standalone operation on unlicensed bands, particularly in adjusting network configurations based on channel busy ratios, which affects channel access and resource allocation.
Innovation Solution
A method involving wireless devices that perform received signal strength indicator (RSSI) measurements and channel occupancy measurements for unlicensed frequencies, selecting or adjusting frequency priorities using mapping tables and thresholds, and applying these priorities for efficient network configuration and cell selection/reselection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic channel occupancy measurement and frequency priority adjustment is implemented, then channel access efficiency is improved, but device complexity increases
Solution Approach 1:
The wireless device autonomously performs RSSI measurements, determines channel occupancy ratios, and adjusts frequency priorities without requiring network intervention. The device serves itself by maintaining mapping tables locally and automatically applying frequency priority adjustments based on measured channel conditions, eliminating the need for complex network-side control mechanisms.
Solution Approach 2:
The system dynamically changes the frequency priority parameter based on measured channel occupancy ratios. By adjusting this key parameter according to real-time channel conditions, the system optimizes channel access efficiency while using a simple parameter adjustment mechanism rather than complex structural changes.
2Reliability
If frequency priority adjustment based on RSSI measurement is performed, then handover failure rate is reduced, but measurement and control complexity increases
Solution Approach 1:
The wireless device pre-configures mapping tables that directly correlate RSSI measurement ranges with frequency priority values. This preliminary preparation allows the device to quickly determine frequency priorities based on simple RSSI threshold comparisons, avoiding complex real-time decision-making and reducing measurement and control complexity while maintaining reliable handover performance.
Solution Approach 2:
The mapping table acts as an intermediary between RSSI measurements and frequency priority decisions. Instead of directly complexly analyzing channel conditions and determining priorities, the system uses the pre-defined mapping table as a mediator to translate simple RSSI values into appropriate frequency priorities, simplifying the measurement and control process.
3Adaptability or versatility
If autonomous frequency priority adjustment is implemented, then network configuration adaptability is improved, but processing overhead increases
Solution Approach 1:
The system pre-configures mapping tables with multiple RSSI ranges and corresponding frequency priority values before operation. This preliminary configuration enables the device to quickly adapt to different channel conditions by simply looking up the appropriate priority in the pre-prepared table, avoiding time-consuming processing during actual channel access decisions.
Solution Approach 2:
The system achieves network configuration adaptability through simple parameter changes in the mapping table rather than complex reconfiguration. By adjusting RSSI thresholds and corresponding frequency priorities in the pre-configured table, the system can adapt to different network conditions with minimal processing overhead.
Data Source
AI summary
A method and apparatus for adjusting a network configuration based on a channel occupancy and/or a channel busy ratio in a wireless communication system is provided. The wireless device performs a received signal strength indicator (RSSI) measurement and/or channel occupancy measurement for an unlicensed frequency. The wireless device may determine a frequency priority of the unlicensed frequency based on a result of the RSSI measurement and/or the channel occupancy measurement. Alternatively, the wireless device may adjust a value of a parameter for measurement reporting, cell selection and/or cell reselection based on the result of the RSSI measurement and/or the channel occupancy measurement.