PRT Allocation for Bandwidth Part Switching in Wireless Systems
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing peak reduction tones (PRTs) during bandwidth part switching, leading to suboptimal PRT distribution and increased PAPR, which affects transmission performance and coverage.
Innovation Solution
The method involves determining a PRT allocation for a target bandwidth part by configuring a PRT sequence that aligns with the new bandwidth, allowing dynamic switching without negatively impacting PAPR, thereby enhancing coverage and transmission performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If PRT allocation is not optimized during bandwidth part switching, then device complexity is reduced, but PAPR increases and transmission performance deteriorates
Solution Approach 1:
The patent pre-configures PRT allocations for multiple bandwidth parts before switching occurs. When a bandwidth part switch is triggered, the UE already has appropriate PRT allocation information ready, eliminating the need for real-time calculation during switching and avoiding PAPR degradation while maintaining low device complexity.
Solution Approach 2:
The patent enables dynamic PRT allocation adaptation by configuring different PRT allocations for different bandwidth parts. The system dynamically selects the appropriate PRT allocation based on the active bandwidth part, allowing optimal PRT distribution across varying bandwidth conditions without increasing overall system complexity.
2Productivity
If PRT allocation is optimized for each bandwidth part, then transmission efficiency improves, but device complexity and configuration overhead increase
Solution Approach 1:
The patent creates a universal PRT allocation framework where a single configuration mechanism serves multiple bandwidth parts. The base station configures PRT allocations that can be applied across different bandwidth parts, and the UE reuses these configurations during switching, achieving optimal transmission efficiency without proportionally increasing configuration overhead.
Solution Approach 2:
The patent optimizes PRT allocation by changing key parameters such as PRT density, spacing, and distribution patterns according to the specific characteristics of each bandwidth part. This parameter-based approach allows efficient adaptation to different bandwidth conditions while avoiding the need for complete reconfiguration, thus improving transmission efficiency with controlled overhead.
3Quantity of substance
If PRT distribution is not optimized during bandwidth switching, then configuration overhead is reduced, but coverage and transmission performance are impacted
Solution Approach 1:
The patent pre-configures appropriate PRT allocations for multiple bandwidth parts before switching occurs. This preliminary configuration ensures that when bandwidth switching happens, the PRT distribution is already optimized for the target bandwidth part, maintaining coverage and transmission performance without requiring additional configuration overhead during the switching event.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may switch from a first bandwidth part to a second bandwidth part; and transmit a signal including one or more peak reduction tones (PRTs) in one or more locations defined by a PRT allocation for the second bandwidth part. Numerous other aspects are provided.