Filter Power Distribution Signaling for DFT-s-OFDM Control
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Solution Overview
Problem
Existing mobile telecommunication systems face challenges in optimizing power distribution and control for DFT-s-OFDM waveforms with FDSS, leading to inaccurate power control and suboptimal resource allocation due to unknown filter power distribution and non-uniform power distribution across frequency bands, which affects transmission power and receiver performance.
Innovation Solution
Implementing UE assistance signaling methods to provide detailed power and bandwidth-based indications of frequency band segments within total bandwidth allocations, allowing the gNB to make informed decisions on power control and resource allocation, considering FDSS-specific power distribution patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed power distribution information is provided for frequency band segments, then power control accuracy is improved, but signaling overhead and system complexity increase
Solution Approach 1:
The total bandwidth allocation is divided into multiple frequency band segments, each with its own power distribution characteristics. This segmentation allows the system to provide detailed power control information for each segment without overwhelming signaling overhead for the entire bandwidth, resolving the contradiction between measurement precision and device complexity.
Solution Approach 2:
Different frequency band segments are characterized by their specific power distribution patterns (e.g., first part vs. second part of each segment). This local quality approach allows targeted power control indications for each segment based on its specific characteristics, improving overall power control accuracy while avoiding uniform complex signaling across all frequencies.
2Productivity
If non-uniform power distribution across frequency bands is utilized, then spectral efficiency is improved, but receiver performance deteriorates due to unknown filter power distribution
Solution Approach 1:
The system provides feedback indications to the receiver about the power distribution characteristics of each frequency band segment. This feedback includes information about the relative power levels in different parts of the spectrum, allowing the receiver to adapt its processing accordingly and maintain reliable performance despite non-uniform power distribution.
Solution Approach 2:
Power distribution characteristics are determined and communicated to the receiver before actual data transmission occurs. This preliminary action allows the receiver to prepare appropriate reception parameters and filter settings in advance, ensuring optimal performance when receiving signals with known non-uniform power distribution patterns.
Data Source
AI summary
Systems, methods, apparatuses, and computer program products for filter power distribution indication. A method may include determining a first size of a first part of a frequency band segment within a total bandwidth allocation, and a second size of a second part of the frequency band segment. The method may also include determining a value indicative of a power spectral density difference or power difference between the first part and the second part. The method may further include generating a power indication of the frequency band segment within the total bandwidth allocation based on the power spectral density difference. In addition, the method may include signaling, to a network element, the power indication for the frequency band segment within the total bandwidth allocation.