Multi-Link Data Dispatch for Spatial Reuse Airtime Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless communication technologies face inefficiencies in spatial reuse and multi-link operation, particularly when overlapping basic service set (OBSS) traffic exists, leading to wasted airtime due to suspended or paused MLD link dispatch.
Innovation Solution
A data transmission method that enables spatial reuse transmission and dispatches data frames with the same traffic identifier (TID) across multiple links based on physical layer rates and packet error rates, optimizing airtime usage and bandwidth efficiency by determining the closest frame exchange sequence (FES) and aligning PPDU end times across links.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If spatial reuse transmission is performed on OBSS channels, then channel utilization is improved, but MLD link dispatch is suspended or paused causing airtime waste
Solution Approach 1:
The patent segments the data transmission process by separating spatial reuse transmission from MLD link dispatch operations. The system performs spatial reuse transmission on OBSS channels while independently managing MLD link dispatch across multiple links, allowing both operations to proceed concurrently without mutual suspension, thereby eliminating airtime waste while maintaining high channel utilization
Solution Approach 2:
The patent implements preliminary action by pre-planning and coordinating the MLD link dispatch schedule before spatial reuse transmission begins. The system determines the dispatch timing and link allocation in advance, ensuring that MLD link operations are ready to resume immediately after spatial reuse transmission completes, thus preventing suspension and optimizing both channel utilization and airtime efficiency
2Productivity
If data frames are transmitted on multiple links simultaneously, then overall throughput is improved, but coordination complexity increases
Solution Approach 1:
The patent applies dynamics by implementing adaptive link dispatch that dynamically adjusts data frame allocation across multiple links based on real-time channel conditions, spatial reuse transmission status, and link quality metrics. This dynamic coordination mechanism optimizes overall throughput while managing complexity through flexible, condition-based decision-making rather than rigid static scheduling
Solution Approach 2:
The patent utilizes parameter changes by varying transmission parameters such as modulation and coding schemes, transmit power, and link selection based on channel conditions and spatial reuse requirements. These parameter adjustments enable efficient multi-link transmission while simplifying coordination through standardized parameter management and pre-defined transmission policies
Data Source
AI summary
A data transmission method is provided. The data transmission method may be applied to a multi-link operation between a first multi-link device (MLD) and a second MLD. The data transmission method may include the following steps. A processor of the first MLD may perform a spatial reuse transmission on at least one link between the first MLD and the second MLD. Then, the processor may dispatch data frames with the same traffic identifier (TID) for all links between the first MLD and the second MLD based on the physical layer (PHY) rates and packet error rates of all links between the first MLD and the second MLD. Then, the processor may transmit the data frames to the second MLD based on the dispatch result.