Multi-RU Resource Allocation for Multi-Connection Wi-Fi
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Solution Overview
Problem
The existing beamforming mechanisms in IEEE802.11ac/ax Wi-Fi technologies are inadequate for multi-connection communication scenarios, as the current NDP announcement frames only support a single Resource Unit (RU) assignment, limiting the efficiency of spectrum utilization and system throughput in next-generation Wi-Fi systems.
Innovation Solution
A resource allocation method that generates and transmits probe trigger message frames containing multiple RU index pairs, allowing two or more RUs to be assigned to one or more stations with a specified bandwidth, supporting multi-connection communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single RU assignment mechanism is used in NDP announcement frames, then the device complexity is reduced and compatibility with existing standards is maintained, but the spectrum utilization efficiency and system throughput deteriorate in multi-connection scenarios
Solution Approach 1:
The patent segments the resource allocation by introducing multiple RU index pairs (first RU index pair and second RU index pair) within the NDP announcement frame. Each index pair can independently allocate resources to different STAs or different connections of the same STA, enabling multi-connection support while maintaining a structured and manageable frame format that builds upon existing standards
Solution Approach 2:
The NDP announcement frame is enhanced to serve multiple functions simultaneously: it can allocate the first RU for one connection and the second RU for another connection, support both single-connection and multi-connection scenarios, and maintain backward compatibility with existing beamforming mechanisms. This multi-functionality resolves the contradiction by making the same frame structure adaptable to different operational modes
2Productivity
If multiple RUs are assigned to multiple connections, then the spectrum utilization efficiency is improved, but the frame structure complexity and difficulty of detecting and measuring increases
Solution Approach 1:
The resource allocation information is segmented into distinct index pairs, where each pair (first RU index and second RU index) represents an independent allocatable unit. This segmentation allows receiving devices to process and detect each RU assignment separately, reducing the overall complexity of frame analysis while enabling efficient multi-connection support
Solution Approach 2:
The patent performs preliminary organization of resource allocation information by structuring the NDP announcement frame to contain clearly defined index pairs before transmission. This preliminary structuring allows receiving devices to easily detect and measure the resource allocations without complex parsing, as the information is already organized in a standardized, predictable format
Data Source
AI summary
A resource allocation method, in which a probe trigger message frame is generated, where the probe trigger message frame includes index pairs for a plurality of Resource Units (RUs), each of the index pairs includes a start index and an end index, and the plurality of RUs are to be assigned to one or more stations (STAs) with a specified bandwidth; and the probe trigger message frame is transmitted. A second device receives a probe trigger message frame, where the probe trigger message frame includes index pairs for a plurality of RUs, and the plurality of RUs are to be assigned to one or more STAs with a specified bandwidth; and transmits a measurement message frame without a data portion based on the probe trigger message frame.