Spectrum Resource Sectioning for Incumbent Access
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Solution Overview
Problem
Existing methods for spectrum sharing between wireless communication systems, such as Licensed Shared Access (LSA), face challenges in allowing incumbents like emergency services quick access to shared spectrum resources due to the time-consuming process of evacuating shared spectrum, which can take longer than acceptable, especially when used by systems with heavy loads.
Innovation Solution
Dividing the shared spectrum resource into multiple sections allows for gradual clearing, enabling quicker access by allowing one section to be cleared and made available to the incumbent while other sections continue to be used, with predetermined or dynamically determined time points for transitioning control of each section.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the shared spectrum resource is evacuated completely before incumbent access, then the incumbent can access the full spectrum resource, but the evacuation time becomes too long for emergency services
Solution Approach 1:
The shared spectrum resource is divided into multiple sections (first section, second section, etc.). The incumbent is granted access to the first section after it is cleared, while the second wireless communication system continues to use the second section. This segmentation allows partial incumbent access without requiring complete evacuation of all spectrum sections, thereby reducing evacuation time while ensuring reliable incumbent access to the cleared portion.
2Speed
If the spectrum resource is cleared section by section, then the incumbent can access part of the spectrum quickly, but the overall evacuation process becomes more complex
Solution Approach 1:
The spectrum resource is pre-divided into multiple sections with predetermined clearing priorities. The management apparatus is configured to clear sections in a predetermined sequence (first section, then second section, etc.). This preliminary structuring simplifies the management complexity by establishing clear clearing priorities and sequences in advance, making the gradual evacuation process more manageable despite the multiple sections involved.
3Reliability
If all users are evacuated from the shared spectrum, then the incumbent can use the full spectrum resource, but the evacuation takes significantly longer under heavy load conditions
Solution Approach 1:
The incumbent is granted access to only the first section of the spectrum resource after clearing, rather than requiring complete evacuation of all sections. The second wireless communication system continues to utilize the second section. This partial action approach ensures emergency service availability in the cleared portion while maintaining overall spectrum utilization efficiency by allowing continued use of uncleared sections.
Data Source
Figure 1A
Figure 1B
Figure 2~3
AI summary
A method for a first wireless communication system (INC) to share a spectrum resource with a second wireless communication system (MNO) uses a spectrum resource which may be divided into at least a first section (FS1) and a second section (FS2). The method may comprise the second wireless communication system (MNO) using the spectrum resource and the second wireless communication system (MNO) clearing at least the first section (FS1) of the spectrum resource from a first point in time (T1). The first wireless communication system (INC) may use the first section (FS1) of the spectrum resource from a second point in time (T2). The second point in time may be predetermined or may be determined by a request from the first wireless communication system (INC).