Distributed-tone Resource Unit Transmission with Frequency-Domain Duplication
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Solution Overview
Problem
Current 6 GHz low-power indoor (LPI) systems face stringent regulations and inefficient bandwidth usage due to limitations on tone distribution, which restricts the coverage range in wireless communications.
Innovation Solution
Implementing distributed-tone resource unit (dRU) transmission schemes with frequency-domain duplication, where subcarriers are distributed across multiple frequency subblocks, and a processor generates and communicates dRUs with frequency-domain duplication to enhance coverage range while reducing peak-to-average power ratio (PAPR).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If tone distribution is limited to certain frequency ranges and window sizes (e.g., dRU within 80 MHz), then regulatory compliance is maintained, but bandwidth usage efficiency deteriorates
Solution Approach 1:
The patent divides the frequency spectrum into multiple distributed-tone resource units (dRUs) that can be independently allocated across different frequency subblocks. Each dRU operates within regulatory limits while collectively utilizing wider bandwidth (160 MHz or 320 MHz), thus maintaining compliance while improving bandwidth efficiency
Solution Approach 2:
The patent extends tone distribution from a single frequency window to multiple frequency subblocks across different dimensional segments of the spectrum. This multi-dimensional approach allows dRUs to span across 160 MHz or 320 MHz by distributing subcarriers across multiple frequency segments, thereby突破ing the single-window limitation
2Device complexity
If dRU transmissions are implemented without frequency-domain duplication, then system complexity is reduced, but coverage range deteriorates
Solution Approach 1:
The patent employs frequency-domain duplication where dRUs are transmitted across multiple frequency subblocks with duplicated subcarrier patterns. This copying approach reinforces signal coverage over extended distances without requiring complex spatial multiplexing, thus extending coverage range while maintaining manageable system complexity
Solution Approach 2:
The patent combines multiple dRU transmissions across different frequency subblocks into a unified distributed-tone structure. By merging the coverage benefits of multiple frequency segments through frequency-domain duplication, the system achieves extended coverage range while coordinating transmissions to avoid excessive complexity
3Loss of energy
If dRU transmissions are implemented without frequency-domain duplication, then PAPR is reduced, but coverage range deteriorates
Solution Approach 1:
The patent uses frequency-domain duplication to copy dRU patterns across multiple frequency subblocks, which reinforces signal strength for extended coverage while the distributed-tone structure inherently controls PAPR by spreading subcarriers across frequency rather than concentrating them in time
Data Source
AI summary
Various schemes pertaining to distributed-tone resource unit (dRU) transmission schemes with frequency-domain duplication in a 6 GHz low-power indoor (LPI) system are described. An apparatus distributes a plurality of subcarriers of a resource unit (RU) to generate a dRU with frequency-domain duplication on a plurality of frequency subblocks. The apparatus then communicates with a communication entity on the plurality of frequency subblocks.