Terminal UE Capability Stratified CDF EIRP Power Class Extension
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Solution Overview
Problem
The complexity of Power Classes in millimeter wave FR2 of LTE systems increases with terminal-type extension, leading to complicated specifications and a rise in test items, as the Power Classes are not in a simple fallback relationship, making it difficult to support terminal-type extensions without defining new Power Classes.
Innovation Solution
A terminal with a control section to determine and transmit UE Capability information using a stratified Cumulative Distribution Function (CDF) for Spherical Coverage Equivalent Isotropic Radiated Power (EIRP), allowing for terminal-type extension without defining new Power Classes, while maintaining Min Peak EIRP and Spherical coverage EIRP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If new Power Classes are defined to support terminal-type extensions in FR2, then the adaptability of the system to different terminal types is improved, but the device complexity and specification complexity increase significantly
Solution Approach 1:
The patent applies parameter changes by modifying the CDF %-tile parameter of Spherical coverage EIRP to create differentiated capability indicators. Instead of defining entirely new Power Classes with multiple parameters, the invention changes a single key parameter (CDF %-tile) to enable terminal-type extension support while maintaining compatibility with existing Power Class frameworks, thereby reducing specification complexity.
Solution Approach 2:
The patent makes the existing Power Class system universal by enabling it to accommodate multiple terminal types through the CDF %-tile differentiation. The same Power Class structure serves multiple functions: it maintains backward compatibility with existing terminals while simultaneously supporting new terminal types with different EIRP distribution characteristics, eliminating the need for separate Power Class definitions.
2Adaptability or versatility
If the number of Power Classes is increased to cover all terminal types, then the versatility of power control is improved, but the difficulty of detecting and measuring capabilities increases
Solution Approach 1:
The patent extracts the key differentiating factor (CDF %-tile of Spherical coverage EIRP) from the complex Power Class specification set. By isolating this single parameter as the capability indicator, the invention simplifies the detection and measurement process - base stations only need to verify this one parameter rather than testing multiple Power Class specifications, thereby reducing test complexity while maintaining comprehensive power control coverage.
3Manufacturing precision
If traditional Power Class specifications are used without modification, then the manufacturing precision and standardization are maintained, but the adaptability to extended terminal types is insufficient
Solution Approach 1:
The patent introduces dynamics into the static Power Class specification system by enabling the CDF %-tile parameter to vary according to terminal type. This allows the specification system to adapt dynamically to different terminal capabilities while maintaining the standardized Power Class framework, achieving both manufacturing precision through standardization and adaptability through parameter variability.
Data Source
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AI summary
A terminal includes: a control section that determines Capability information including UE Capability for a Power Class; and a transmission section that transmits the Capability information. The Capability information includes new UE Capability with stratified Cumulative Distribution Function (CDF) %-tile for Spherical Coverage Equivalent Isotropic Radiated Power (EIRP).