Group-Based TN-NTN Radio Resource Allocation for Spectrum Balance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a complementary demand for terrestrial network (TN) and non-terrestrial network (NTN) spectrum across different geographic locations, with TN spectrum underutilized in densely populated areas and NTN spectrum underutilized in remote areas, leading to inefficient spectrum utilization and network performance degradation.
Innovation Solution
A method and apparatus for coordinated radio resource allocation between TN and NTN networks, involving dividing NTN UEs and TN BSs into groups based on predefined thresholds or objective functions, and partitioning radio resources to optimize spectrum allocation and mitigate interference, enhancing coverage and network performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If TN spectrum is allocated to densely populated areas, then TN network capacity is improved, but NTN spectrum utilization deteriorates (remains underutilized)
Solution Approach 1:
The patent segments the TN user population into multiple groups based on geographic location and service requirements. Different groups are allocated different spectrum resources: urban users receive TN spectrum while rural/remote users receive NTN spectrum. This segmentation allows simultaneous optimization of both TN capacity in dense areas and NTN utilization in remote areas, resolving the contradiction between improving TN productivity and preventing NTN energy loss.
2Area of stationary object
If NTN spectrum is allocated to remote areas, then NTN coverage is improved, but TN spectrum utilization deteriorates (remains underutilized)
Solution Approach 1:
The patent applies local quality by assigning different spectrum resources to different geographic regions. Remote areas are allocated NTN spectrum for coverage extension, while densely populated areas are allocated TN spectrum for capacity provision. This localized resource allocation ensures that each region receives the appropriate spectrum type, improving NTN coverage in remote areas without causing TN spectrum underutilization in urban areas.
3Device complexity
If unified spectrum allocation is used for TN and NTN networks, then system complexity is reduced, but spectrum utilization efficiency deteriorates
Solution Approach 1:
The patent implements dynamic spectrum allocation where the system adaptively assigns TN or NTN spectrum resources based on real-time user location, traffic patterns, and network conditions. This dynamic approach allows the system to optimize spectrum utilization efficiency by allocating the appropriate spectrum type to each user group, while the centralized control mechanism manages the complexity of coordinating both TN and NTN networks. The dynamic nature resolves the contradiction by making the allocation flexible rather than static.
Data Source
AI summary
A method for performing radio resource allocation in a TN-NTN mixed system is provided. The system includes a satellite that covers an NTN cell, and a plurality of TN base stations (TN BSs) within a coverage of the satellite. The NTN cell serves a plurality of NTN user equipments (NTN UEs). The method includes dividing the plurality of NTN UEs into X NTN UE groups; partitioning a radio resource into M parts, where M≥X; dividing the plurality of TN BSs into M TN BS groups; deciding radio resource allocation regarding the plurality of NTN UEs, by allocating an i-th part of the radio resource to an i-th NTN UE group, where i=1, 2, . . . , X; and deciding radio resource allocation regarding the plurality of TN BSs, by allocating a sum of a j-th to an M-th parts of the radio resource to a j-th TN BS group, where j=1, 2, . . . , M.