Distributed-Tone Resource Units for 6 GHz LPI Coverage Limits
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Solution Overview
Problem
Current regulations impose stringent limits on transmit power in 6-GHz low-power indoor (LPI) systems, necessitating a solution to boost transmit power and improve coverage range without violating these limits.
Innovation Solution
Implementing distributed-tone resource unit (dRU) operation, which involves distributing frequency tones over a distribution bandwidth, frequency subblocks, or co-existing with regular RUs, to enhance transmit power and coverage in 6GHz LPI systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If distributed-tone RU operation is implemented to boost transmit power, then coverage range is improved, but device complexity increases
Solution Approach 1:
The frequency spectrum is segmented into multiple subblocks, and the resource unit is further divided into distributed tones across these subblocks. This segmentation allows the system to achieve frequency diversity and boost effective transmit power while maintaining manageable device complexity through structured organization.
Solution Approach 2:
The patent transitions from a single contiguous frequency block to a multi-dimensional distribution across multiple subblocks and tone indices. This dimensional expansion in frequency-space allows power boosting through spectral distribution while the systematic mapping rules keep implementation complexity controlled.
2Reliability
If distributed-tone RU operation is implemented to improve coverage range, then wireless communication performance is enhanced, but system complexity increases
Solution Approach 1:
The resource unit is segmented into multiple distributed tones across different subblocks, providing frequency diversity that improves wireless communication reliability. The segmentation strategy is designed to balance performance enhancement with controlled system complexity through systematic allocation rules.
Solution Approach 2:
The patent changes the frequency domain parameters by distributing tones across multiple subblocks with specific spacing patterns. This parameter transformation improves communication reliability through diversity while the standardized parameter sets keep system complexity manageable.
3Power
If frequency tones are distributed over entire distribution bandwidth, then transmit power is boosted, but loss of information increases due to puncturing scenarios
Solution Approach 1:
The patent applies partial distribution by allowing the network to configure whether dRU spans the entire bandwidth or only partial bandwidth. This partial action approach enables power boosting where needed while avoiding information loss in punctured subblocks by limiting dRU distribution to non-punctured regions.
Solution Approach 2:
The system dynamically adapts the dRU distribution configuration based on channel conditions and puncturing patterns. The network can flexibly adjust the bandwidth occupation and subblock selection to maximize transmit power while minimizing information loss in real-time scenarios.
Data Source
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Figure 3(A)~3(B)
AI summary
Various schemes pertaining to distributed-tone resource unit, RU, operation in 6GHz low-power indoor, LPI, systems are described. A communication entity distributes frequency tones of a resource unit, RU, over a distribution bandwidth as a distributed-tone RU, dRU, (810). The communication entity then communicates using the distributed-tone RU in a 6GHz low-power indoor, LPI, system (820). In some cases, the dRU is distributed over an entire bandwidth. Alternatively, the dRU operation is implemented per frequency segment. Alternatively, the dRU co-exists with regular or localized RU.