PPDU RU Combination Signaling for Flexible Multi-RU Allocation
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Solution Overview
Problem
Existing wireless communication systems, such as 802.11ax, are limited in their ability to allocate multiple resource units (RUs) to a single station or group of stations, restricting flexibility and spectrum utilization.
Innovation Solution
A method and apparatus for indicating resource unit combinations using physical layer protocol data units (PPDUs) to allocate multiple contiguous or noncontiguous RUs to stations, enhancing flexibility and spectrum utilization by employing combination identifiers and indication information within the PPDU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If only one RU is allocated to one STA or a plurality of STAs in 802.11ax, then the system maintains simple resource allocation management, but RU allocation flexibility and spectrum utilization are restricted
Solution Approach 1:
The frequency band resource is divided into multiple RUs, and the patent enables allocation of multiple RUs to a single STA by introducing RU combination indication mechanisms. The resource allocation is segmented into basic RUs that can be combined in various ways, allowing flexible allocation while maintaining manageable complexity through standardized combination patterns.
Solution Approach 2:
The patent introduces dynamic RU allocation where the number and configuration of RUs allocated to each STA can vary based on traffic requirements. The system can dynamically adjust RU combinations, allocate different numbers of RUs to different STAs, and adapt resource distribution in real-time, transforming static single-RU allocation into dynamic multi-RU allocation.
2Productivity
If multiple RUs are allocated to one STA or plurality of STAs, then RU allocation flexibility and spectrum utilization are improved, but the complexity of indicating and managing resource allocations increases
Solution Approach 1:
The patent merges multiple RU indication mechanisms into a unified framework. By introducing RU combination indication fields that encode multiple RU allocations efficiently, the system combines what would otherwise require separate indication procedures into a single integrated allocation process, improving spectrum utilization while controlling indication complexity.
Solution Approach 2:
The patent changes the parameter representation from single RU identification to RU combination identification. By introducing new indication parameters that describe RU combinations rather than individual RUs, the system enables multiple RU allocations while managing complexity through parameter optimization and efficient encoding schemes.
3Productivity
If multiple RUs are allocated to one STA, then transmission efficiency is increased, but the difficulty of determining and managing resource unit combinations increases
Solution Approach 1:
The patent applies preliminary action by pre-defining valid RU combination patterns and allocation rules. Instead of allowing arbitrary RU combinations, the system establishes predetermined combination templates that simplify determination. STAs can quickly identify their allocated RUs by matching against pre-known patterns, reducing the difficulty of RU combination determination while enabling efficient multi-RU allocations.
Data Source
AI summary
A resource unit combination indication method and a communication apparatus are provided. The resource unit combination indication method includes: A transmit end generates a physical layer protocol data unit (PPDU), and sends the PPDU. The PPDU includes a resource unit allocation subfield. The resource unit allocation subfield indicates a multi-resource unit (MRU) to which a 242-tone resource unit (RU) corresponding to the resource unit allocation subfield belongs, and further indicates a quantity of user fields corresponding to the resource unit allocation subfield. According to the application, one or more users may be indicated to use a plurality of contiguous or noncontiguous RUs for data transmission, to improve RU allocation flexibility of a system and spectrum utilization of the system.