Multi-RU Allocation for Single STA Wireless LAN Channel Efficiency
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Solution Overview
Problem
Current wireless LAN systems face limitations in allowing a single receiving STA to simultaneously transmit and receive multiple PSDUs through a single link, which hampers efficient channel utilization.
Innovation Solution
The proposed method allocates multiple RUs or MRUs to enable a receiving STA to simultaneously transmit and receive multiple PSDUs, optimizing channel usage by allowing these allocations within a single channel's operating bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single receiving STA is limited to receiving only one PSDU through a single link, then the system maintains simplicity in resource allocation and protocol design, but channel utilization efficiency deteriorates
Solution Approach 1:
The patent divides the single link's resource space into multiple Resource Units (RUs), allowing a single receiving STA to be allocated multiple RUs within the same link. This segmentation enables the STA to simultaneously receive multiple PSDUs on different RUs, thereby improving channel utilization without requiring additional links or complicating the overall protocol structure.
2Productivity
If multiple RUs are allocated to a single receiving STA for simultaneous PSDU reception, then channel utilization efficiency is improved, but the complexity of resource allocation and control information increases
Solution Approach 1:
The patent extends the existing RU allocation mechanism, originally designed for multi-user scenarios, to also support multi-RU allocation for a single user. By making the resource allocation mechanism universal and adaptable to both single-user multi-RU and multi-user single-RU scenarios, the system achieves improved channel utilization without requiring entirely new allocation protocols.
Solution Approach 2:
The patent modifies the control information parameters to enable flexible RU allocation. By changing how RU allocation information is encoded and transmitted in the control fields, the system can dynamically allocate multiple RUs to a single STA when needed, while maintaining backward compatibility with existing single-RU allocation modes.
3Productivity
If multiple PSDUs are transmitted simultaneously to one receiving STA, then data transmission efficiency is enhanced, but the requirement for RU allocation information and control signaling increases
Solution Approach 1:
The patent combines multiple PSDUs into a single PPDU structure, with each PSDU mapped to a specific RU. By merging the transmission of multiple data units into one aggregated packet structure with unified control information, the system achieves efficient simultaneous transmission without proportionally increasing control signaling overhead.
Data Source
AI summary
Proposed are a method and a device for allocating a plurality of RUs or MRUs in order to simultaneously transmit or receive a plurality of PSDUs by one reception STA in a wireless LAN system. Specifically, a reception STA receives control information from a transmission STA. The reception STA decodes a plurality of PSDUs included in a PPDU on the basis of the control information. The plurality of PSDUs are simultaneously transmitted through one link. The control information includes information on a plurality of RUs or MRUs to which the plurality of PSDUs are allocated, respectively, within a bandwidth of the PPDU. The plurality of RUs or MRUs are allocated only in a channel within an operation bandwidth of the reception STA.