Joint Rate Matching and Puncturing for Tone Reservation
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in spectral efficiency and throughput due to the overhead resources consumed by signaling for tone reservation, which affects the peak-to-average-power ratio (PAPR) and decoding accuracy of communications.
Innovation Solution
Implementing joint rate matching and puncturing techniques on tone reservation subcarriers, where rate matching is applied to a first set of subcarriers and puncturing to a second set, based on channel response estimates, to improve spectral efficiency and avoid errors in data subcarrier identification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tone reservation is applied to reduce PAPR and improve decoding accuracy, then communication reliability is improved, but spectral efficiency deteriorates due to overhead resources consumed by signaling
Solution Approach 1:
The patent segments tone reservation subcarriers into two distinct sets: a first set for rate matching and a second set for puncturing. This segmentation allows the system to apply different processing strategies to different portions of the reserved subcarriers, optimizing both reliability and spectral efficiency by preventing errors on the first set while managing overhead on the second set.
Solution Approach 2:
The patent changes the parameter of subcarrier processing by applying rate matching to one set of tone reservation subcarriers and puncturing to another set. This parameter change enables the system to adaptively manage the trade-off between reliability (through rate matching) and spectral efficiency (through selective puncturing), resolving the contradiction between these two objectives.
2Measurement precision
If rate matching is applied to tone reservation subcarriers, then decoding accuracy is improved by avoiding errors, but spectral efficiency worsens due to reduced data transmission capacity
Solution Approach 1:
The patent divides tone reservation subcarriers into two groups, applying rate matching only to the first set and puncturing to the second set. This segmentation ensures that subcarrier identification accuracy is improved for the first set while minimizing the impact on data transmission capacity by limiting rate matching to only a portion of the reserved subcarriers.
Solution Approach 2:
The patent applies different quality levels of processing to different sets of subcarriers: rate matching (higher quality) is applied to the first set for improved identification accuracy, while puncturing (lower quality) is applied to the second set to preserve more data capacity. This local differentiation resolves the contradiction by optimizing each set for its specific purpose.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication that tone reservation is to be applied, to a subsequent communication, including applying rate matching on a first set of tone reservation (TR) subcarriers and applying puncturing on a second set of the TR subcarriers. The UE may receive the subsequent communication based at least in part on rate matching being applied to the first set of the TR subcarriers and puncturing being applied to the second set of the TR subcarriers. Numerous other aspects are described.