Non-Contiguous Resource Unit Coding for EHT Systems
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Solution Overview
Problem
Wireless local area networks (WLANs) face challenges in efficiently managing resources to provide bandwidth and response times due to multiple devices sharing resources, with limitations from communication protocols and hardware bandwidth, especially when operating with both newer and legacy protocols.
Innovation Solution
The proposed solution involves a radio architecture that integrates WLAN and Bluetooth functionalities, utilizing a front-end module, radio IC circuitry, and baseband processing circuitry to enable efficient coexistence and operation across multiple resource units, supporting protocols like IEEE 802.11 and Extremely High Throughput (EHT) standards through advanced signal processing and frequency management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple devices share the same wireless resources, then resource utilization is improved, but bandwidth and response times deteriorate
Solution Approach 1:
The channel bandwidth is divided into multiple resource units (RUs) of different sizes (26, 52, 106, 242 subcarriers). This segmentation allows multiple devices to be assigned to different RUs simultaneously, improving resource utilization while maintaining dedicated bandwidth for each device to ensure acceptable response times.
Solution Approach 2:
The patent introduces a new dimension of resource allocation by creating non-contiguous RUs that can span across different frequency segments. This allows flexible assignment of frequency resources to support both newer EHT protocols and legacy devices without interfering with each other's performance.
2Adaptability or versatility
If the system supports both newer EHT protocols and legacy device protocols, then adaptability is improved, but device complexity increases
Solution Approach 1:
The resource unit allocation mechanism is designed to be universal, supporting both EHT and legacy protocols through a common framework. The same physical layer procedures and resource unit structures can serve multiple protocol requirements, reducing the need for separate implementation paths and lowering overall system complexity.
Solution Approach 2:
The system dynamically adjusts resource unit allocation based on the protocol being used. EHT devices can utilize larger non-contiguous RUs for higher throughput, while legacy devices are assigned appropriate RU sizes from the same pool, allowing the system to adapt to different protocol requirements without fixed complex configurations.
3Reliability
If devices are limited by communication protocol or hardware bandwidth, then reliability is improved, but productivity deteriorates
Solution Approach 1:
The patent changes the parameter of resource unit allocation from fixed to flexible, allowing devices to be assigned RUs of different sizes (26, 52, 106, 242 subcarriers) based on their capabilities. This enables hardware-limited devices to receive smaller RUs ensuring reliable communication, while capable EHT devices can utilize larger non-contiguous RUs to maximize bandwidth utilization.
Data Source
AI summary
Embodiments of an access point (AP), station (STA) and method of communication are generally described herein. The STA may determine a portion of a channel occupied by an incumbent device. The STA may refrain from communication in a first subset of resource units (RUs) that overlap the portion of the channel occupied by the incumbent device. The STA may determine a combined RU that comprises two or more RUs of a second subset of RUs that do not overlap the portion of the channel occupied by the incumbent device. The STA may encode a physical layer convergence procedure protocol data unit (PPDU) for transmission in the combined RU. The PPDU may be encoded in accordance with joint coding across the RUs of the combined RU.