9-Bit RU Allocation Subfield for 320 MHz EHT Signaling
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Solution Overview
Problem
Next-generation wireless communications, such as IEEE 802.11be WLAN systems, face challenges in efficiently allocating resource units (RUs) for wider bandwidths and aggregated multiple RUs, particularly in extreme high-throughput (EHT) systems, as existing designs are not optimized for bandwidths beyond 80 MHz.
Innovation Solution
The proposed solution extends the RU allocation subfield from 8 bits to 9 bits, allowing for the allocation of RUs in bandwidths up to 320 MHz by using the additional bit to indicate segment allocation within multiple 80-MHz segments, enabling efficient signaling for both uplink and downlink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the RU allocation subfield is extended from 8 bits to 9 bits to support wider bandwidths up to 320 MHz, then the bandwidth coverage and RU allocation capability are improved, but the signaling overhead and protocol complexity increase
Solution Approach 1:
The patent segments the 320 MHz bandwidth into multiple 80 MHz segments and uses the 9th bit to indicate which segment the RU allocation applies to. This allows the existing 8-bit RU allocation mechanism to be reused in each segment while the additional bit provides segment identification, thereby supporting wider bandwidths without completely redesigning the allocation protocol.
Solution Approach 2:
The patent adds a new dimension to the RU allocation signaling by introducing a segment indication bit. Instead of solely increasing the RU index range, it creates a two-dimensional allocation space: one dimension for the 80 MHz segment selection (new bit) and another dimension for the RU allocation within the segment (existing 8 bits), enabling 320 MHz support through dimensional expansion.
2Adaptability or versatility
If the RU allocation subfield is extended from 8 bits to 9 bits to support aggregated multiple RUs, then the resource allocation flexibility is improved, but the processing complexity and implementation difficulty increase
Solution Approach 1:
The patent divides the aggregated RU allocation into segment-level identification and RU-level allocation. The additional bit identifies the segment containing the aggregated RUs, while the existing 8 bits specify the RU allocation pattern within that segment. This segmentation allows flexible aggregated RU support without requiring complete reprocessing of the entire allocation structure.
Solution Approach 2:
The patent performs preliminary segment identification using the additional bit before executing the detailed RU allocation specified by the existing 8 bits. This preliminary action separates the bandwidth selection from the resource allocation, allowing the system to first determine which 80 MHz segment is being addressed and then apply the RU allocation rules, thereby simplifying the overall processing complexity.
Data Source
AI summary
A method pertaining to resource unit (RU) allocation subfield designs for trigger-based and self-contained signaling in extreme high-throughput (EHT) systems involves receiving a signaling and determining allocation of one or more RUs according to a 9-bit RU allocation subfield indicated in the signaling. The method also involves performing wireless communications using the one or more RUs.