Radio Frequency Sharing via Protection Domain Generation
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Solution Overview
Problem
Existing radio stations face interference challenges due to new radio stations, particularly in dynamic environments like Wi-Fi, LTE-LAA, and 5G NR-U, where frequency sharing is complex and requires dynamic calculation of interference effects to protect primary services.
Innovation Solution
A method and apparatus that calculate the interference effect on existing radio stations by determining the attenuation effect and path loss from new radio stations, using a processor to generate shared information that restricts frequency use by new radio stations within a protection domain to prevent excessive interference, considering factors like location, transmission power, and service domain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency sharing between radio stations is implemented, then resource utilization is improved, but interference between stations increases
Solution Approach 1:
The patent applies local quality by determining protection domains specifically for existing radio stations based on their reception masks and interference characteristics. Different spatial regions are assigned different frequency usage rights - areas within protection domains restrict new station frequencies while areas outside allow flexible sharing, thus enabling localized resource optimization without causing harmful interference to primary services
Solution Approach 2:
The patent implements preliminary action by pre-calculating protection domains and generating shared information before new radio stations begin operation. The system determines attenuation effects, calculates interference effects, and establishes frequency restrictions in advance, allowing new stations to operate without causing interference while maximizing resource utilization from the outset
2Reliability
If dynamic calculation of interference effect is performed, then protection of primary service is improved, but system complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the calculation process into distinct modules: determining attenuation effects based on reception masks, calculating interference effects using path loss models, determining protection domains through threshold comparisons, and generating shared information. This modular approach makes the complex dynamic calculation system more manageable and implementable while maintaining high reliability for protecting primary services
Solution Approach 2:
The patent introduces an intermediary processing system that acts as a mediator between new radio stations and existing primary service stations. This intermediary calculates interference effects, determines protection domains, and generates shared information that new stations can use to operate without interfering with primary services, thus protecting primary services while enabling secondary service operation
3Object-affected harmful factors
If protection domain is determined for existing radio station, then interference to existing station is reduced, but frequency availability for new station is restricted
Solution Approach 1:
The patent applies dynamics by making frequency availability adaptive rather than static. The system dynamically determines protection domains based on the specific characteristics of each existing radio station's reception mask and the location of new stations. New stations can access frequencies dynamically - restricted within protection domains but freely available outside them, thus reducing interference to existing stations while maintaining frequency availability where appropriate
Data Source
AI summary
A method of generating shared information includes determining an attenuation effect on transmission power of a new radio station due to a reception mask of an existing radio station, calculating an interference effect of the existing radio station due to the new radio station using the attenuation effect, determining a protection domain of the existing radio station according to the interference effect, and generating shared information to be used by the new radio station based on the protection domain, wherein the protection domain is a domain in which a frequency available to the new radio station is restricted.