Frequency-First Time-Frequency Resource Mapping for Wideband Systems
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently mapping time-frequency resources for wideband systems, leading to suboptimal performance in multiple-user scenarios.
Innovation Solution
The described techniques involve a first wireless device communicating an allocation of time-frequency resources and mapping a codeword across multiple subbands in a frequency-first, time-second manner, allowing for efficient resource utilization and reduced memory usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional time-frequency resource mapping is used in wideband systems, then existing system compatibility is maintained, but resource allocation efficiency and processing performance are suboptimal
Solution Approach 1:
The patent segments the wideband time-frequency resources into multiple subbands, each handled independently through frequency-first mapping. This segmentation allows optimized resource allocation within each subband while maintaining overall system efficiency and reliability in wideband operations.
2Productivity
If frequency-first, time-second mapping is applied across multiple subbands, then resource utilization efficiency is improved, but system complexity increases
Solution Approach 1:
By dividing the frequency spectrum into subbands and applying mapping independently to each, the patent reduces the complexity of handling wideband resources while maintaining high utilization efficiency through structured frequency-first allocation.
Solution Approach 2:
The patent transitions from traditional time-first mapping to frequency-first mapping, changing the dimensional order of resource allocation. This dimensional change enables more efficient resource utilization by allocating frequencies first across subbands, then mapping time resources, thereby improving productivity without proportionally increasing complexity.
3Productivity
If conventional mapping approaches are used, then implementation simplicity is maintained, but memory usage and processing efficiency are suboptimal
Solution Approach 1:
The patent segments the mapping process across multiple subbands, allowing memory and processing operations to be performed in smaller, manageable units. This segmentation reduces peak memory requirements and improves processing efficiency by handling resources in distributed manner rather than monolithically.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A first wireless device may communicate an allocation of a set of time-frequency resources of a carrier for transmission of a first codeword. The first wireless device may map a first portion of the first codeword to resource elements of a first subband of the set of time-frequency resources in a frequency-first, time-second manner and a second portion of the first codeword to resource elements of a second subband of the set of time-frequency resources in the frequency-first, time-second manner. The first portion of the first codeword may include a contiguous portion of the first codeword preceding the second portion of the first codeword. The first wireless device may transmit, within the set of time-frequency resources, the first codeword based on the mapping.