Wi‑Fi Resource Indication for Multi‑RU Noncontiguous Allocation
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Solution Overview
Problem
Existing wireless fidelity technologies, such as IEEE 802.11ax, face challenges in efficiently allocating multiple resource units to multiple stations for improved spectrum utilization, particularly in noncontiguous bandwidths, leading to inefficiencies in single-user and full-bandwidth multi-user MIMO transmissions.
Innovation Solution
The proposed solution involves using two content channels in the HE-SIG B to indicate the allocation of multiple resource units to one or more stations, reducing signaling overheads through reserved bit sequences and indication information in the EHT signal field to support single-user and full-bandwidth MU-MIMO punctured transmissions on noncontiguous bandwidths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only one resource unit is allocated to one station or a group of stations in OFDMA transmission, then the signaling overhead is reduced and the system is simpler to manage, but the spectrum utilization efficiency deteriorates because multiple resource units cannot be allocated to a single station for multi-user MIMO transmission
Solution Approach 1:
The resource indication information is segmented into multiple bit sequences, where each bit sequence corresponds to a specific resource unit. This segmentation allows the system to indicate multiple resource unit allocations to different stations while maintaining manageable complexity through structured organization of allocation information.
Solution Approach 2:
The patent introduces a new dimension in resource allocation by enabling one station to receive multiple resource units simultaneously through multi-user MIMO transmission. This transforms the traditional one-to-one resource allocation model into a one-to-many model, improving spectrum utilization by allowing parallel transmissions on multiple resource units to the same station.
2Adaptability or versatility
If contiguous bandwidth is used for transmission, then the signal quality and transmission reliability are improved, but the adaptability to noncontiguous bandwidth allocations deteriorates, limiting future wireless fidelity standards
Solution Approach 1:
The patent applies local quality by allowing different resource units to be allocated with different characteristics. Each resource unit can be independently assigned to different stations based on local channel conditions and requirements, enabling flexible noncontiguous bandwidth allocation while maintaining optimal transmission reliability for each specific resource unit through targeted station assignment.
Data Source
AI summary
This application relates to the field of wireless fidelity technologies, and in particular to an information indication method. The method includes: An access point determines resource indication information, and sends the resource indication information. The resource indication information includes a plurality of bit sequences. A first bit sequence in the plurality of bit sequences corresponds to a first resource unit. The first resource unit is a resource unit in a resource block set that is allocated to a first station (STA) or a plurality of STAs. The resource block set includes at least two resource units.