Distributive Resource Unit Tone Allocation for Mixed Bandwidth Scheduling
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Solution Overview
Problem
Current wireless communication systems, such as IEEE 802.11 wireless communication systems, face challenges in efficiently scheduling resource units and distributive resource units due to government-regulated power spectral density requirements and the need for effective data transmission across a range of bandwidths.
Innovation Solution
The proposed method involves allocating 106 usable tones to each of two or more distributive resource units (dRUs) associated with the same device, allowing for flexible tone allocation across various bandwidths and enabling mixed scheduling between devices operating on different bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple distributive resource units (dRUs) are allocated to a device, then transmission power and coverage are improved, but the complexity of tone allocation and scheduling increases
Solution Approach 1:
The patent segments the frequency band into multiple distributive resource units (dRUs), each containing a specific number of tones (e.g., 106 tones per dRU). By dividing the total available spectrum into discrete allocable units, the system enables flexible power distribution across multiple dRUs while maintaining manageable allocation complexity through standardized segment structures.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by distributing tones across non-contiguous frequency positions within dRUs. Instead of allocating contiguous resource blocks, the system distributes tones in a pattern that spans the frequency band, enabling improved coverage and power efficiency while providing additional degrees of freedom for scheduling optimization.
2Area of stationary object
If dRUs are distributed across frequency band, then coverage is improved, but the difficulty of detecting and measuring tone allocation increases
Solution Approach 1:
The patent implements feedback mechanisms where receiving devices report detected dRU allocations and tone positions back to transmitting devices. This feedback loop enables dynamic adjustment and verification of distributed tone allocations, ensuring accurate detection despite the non-contiguous frequency distribution pattern.
Solution Approach 2:
The patent introduces signaling mechanisms that act as intermediaries to convey dRU allocation information between devices. These signaling protocols provide structured representations of distributed tone positions, making the detection and measurement of complex allocations more manageable through standardized information exchange formats.
3Productivity
If 106 tones are allocated to each dRU, then data transmission efficiency is improved, but the loss of flexibility in adapting to different bandwidth requirements increases
Solution Approach 1:
The patent implements dynamic dRU allocation where the number of dRUs assigned to each device can be adjusted based on instantaneous bandwidth requirements and channel conditions. While each dRU maintains a standardized tone count (e.g., 106 tones) for efficient processing, the system dynamically controls the number of dRUs allocated, enabling adaptation to different total bandwidth requirements through flexible aggregation of standardized units.
Solution Approach 2:
The patent enables bandwidth adaptation by changing the parameter of dRU quantity rather than dRU internal structure. Each dRU maintains fixed parameters (106 tones) for efficient processing, but the system achieves bandwidth flexibility by varying the number of dRUs allocated to different devices and services, allowing scalable bandwidth allocation from narrow to wide bands through parameter adjustment.
Data Source
AI summary
A method, system and apparatus for subcarrier allocation to two or more dRUs or two or more RUs associated with a same device is provided. Subcarrier allocation includes scheduling 106 tones to each dRU or each RU associated with the device. Tone alignment, defining unusable or unused tones reserved for other purposes, is provided across different carrier bandwidths enabling mixed scheduling for devices operating at different carrier frequencies.