WLAN Resource Allocation via Single Resource Unit Scheduling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Next-generation wireless local area networks (WLANs) face challenges in improving spectrum efficiency and area throughput, especially in dense environments with multiple access points and stations, and in outdoor settings, where existing technologies limit bandwidth allocation and throughput due to interference and user load.
Innovation Solution
The method involves allocating wireless resources based on a single resource unit, using a combination of basic tone units (BTU) and small tone units (STU), with a virtual allocation resource unit that can be interleaved, allowing for flexible scheduling and increased throughput through orthogonal frequency division multiple access (OFDMA) and multi-user multiple input multiple output (MU MIMO) techniques.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resource allocation is performed using fixed-size resource units in existing WLAN, then device complexity is reduced, but scheduling flexibility deteriorates
Solution Approach 1:
The bandwidth is divided into multiple resource units of different sizes (first resource units and second resource units). The access point can allocate combinations of these different-sized resource units to multiple stations, enabling flexible resource allocation. This segmentation allows the system to adapt to varying data transmission needs of different stations while maintaining manageable device complexity through standardized unit definitions.
Solution Approach 2:
The patent implements dynamic resource allocation where the access point can flexibly combine different numbers and sizes of resource units based on real-time channel conditions and station requirements. The system dynamically adjusts the allocation strategy by selecting appropriate combinations of first and second resource units, transforming the static fixed-size allocation into a dynamic adaptive allocation mechanism.
2Productivity
If multiple channels are used simultaneously without primary channel rule, then throughput is increased, but interference management becomes more difficult
Solution Approach 1:
The patent changes the operational parameters by allowing simultaneous use of multiple channels without being constrained by the traditional primary channel rule. This parameter change enables the system to utilize more frequency resources concurrently, increasing throughput. The interference management is handled through coordinated resource unit allocation across channels, where the access point schedules transmissions to minimize inter-channel interference.
3Productivity
If virtual allocation resource unit with interleaved data tones is implemented, then resource efficiency is improved, but processing complexity increases
Solution Approach 1:
The patent merges multiple data tones into a virtual allocation resource unit that can be interleaved. By combining several tones into a single allocatable unit with interleaving capability, the system improves resource efficiency and enables more flexible allocation patterns. The processing complexity is managed through standardized interleaving algorithms that operate on these virtual units, maintaining implementation feasibility.
Data Source
AI summary
Disclosed are a method and an apparatus for allocating wireless resources based on a single resource unit in a WLAN. The method for allocating the wireless resources based on a single resource unit in a WLAN may comprise the steps of: an AP scheduling, on a bandwidth, a plurality of wireless resources for communication with a plurality of STAs; and the AP transmitting a plurality of items of downlink data to each of the plurality of STAs through each of the plurality of wireless resources, wherein when resource allocation based on a virtual allocation resource unit is not supported, each of the plurality of wireless resources can include at least one first resource unit only or at least one second resource unit only, wherein the size of the first resource unit can be larger than the size of the second resource unit.