Uplink Signal Interlace Mapping for PAPR Optimization
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in transmitting uplink channels, particularly in managing peak-to-average power ratio (PAPR) and cubic metric (CM) values, which affect the performance of signals in shared spectrum environments.
Innovation Solution
The method involves repeatedly mapping uplink signals to resource blocks in an interlace pattern, where the number of resource blocks is a prime number, and applying a phase shift pattern to optimize PAPR and CM values, thereby enhancing transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If uplink signals are transmitted using conventional resource block allocation, then transmission coverage is maintained, but peak-to-average power ratio and cubic metric performance deteriorate
Solution Approach 1:
The patent segments the uplink signal transmission by dividing resource blocks into interlaces with prime number configurations. This segmentation distributes signal energy across non-contiguous frequency resources, reducing peak power concentrations and improving PAPR performance while maintaining reliable transmission through diversified resource allocation.
Solution Approach 2:
The patent changes the resource block allocation parameter from conventional contiguous allocation to interlace-based allocation with prime number patterns. This parameter change fundamentally alters the spectral distribution of uplink signals, optimizing both PAPR and CM metrics while ensuring transmission reliability through the mathematical properties of prime number spacing.
2Use of energy by moving object
If uplink signals are transmitted using conventional resource block allocation, then system simplicity is maintained, but cubic metric performance deteriorates
Solution Approach 1:
The patent segments resource blocks into interlaces defined by prime number patterns, creating a structured yet simplified mapping approach. This segmentation provides mathematical regularity that reduces cubic metric values while the systematic nature of prime number-based interlaces keeps the implementation complexity manageable through predictable resource distribution patterns.
Solution Approach 2:
The patent introduces a new parameter configuration where the number of resource blocks per interlace is defined by prime numbers. This parameter change optimizes cubic metric performance by creating favorable spectral characteristics, while the regular mathematical structure of prime number sequences maintains implementation simplicity through standardized mapping procedures.
3Use of energy by moving object
If prime number resource blocks are used in interlace pattern, then PAPR and CM performance improve, but resource allocation flexibility decreases
Solution Approach 1:
The patent creates a universal interlace structure based on prime number patterns that can be applied across different uplink signal types and channel configurations. This universal framework maintains PAPR and CM performance benefits while providing adaptable resource allocation through configurable interlace patterns that can accommodate various traffic demands and channel conditions.
Solution Approach 2:
The patent implements dynamic resource allocation within the prime number-based interlace framework, allowing the system to adapt resource distribution according to channel conditions and traffic requirements. The mathematical structure of prime number interlaces provides a stable foundation for PAPR and CM optimization while enabling flexible dynamic allocation through configurable parameters such as interlace density and resource block grouping.
Data Source
AI summary
A method and device for transmitting and receiving signals in a wireless communication system, according to one embodiment of the present invention, comprise: repetitively mapping a PUCCH sequence to each of resource blocks (RB) in an interlace; and transmitting the PUCCH on the interlace, wherein the number of RBs constituting the interlace may be a prime number.