Multi-Link Wi-Fi TXOP Marking for Low-Latency Service Reliability
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Solution Overview
Problem
Existing Wi-Fi technologies face challenges in ensuring low-latency service transmission, particularly in scenarios where multiple access points and stations affiliate to multi-link devices, leading to potential failures in meeting Ultra High Reliability (UHR) requirements.
Innovation Solution
Incorporating identifier information into data frames to indicate whether low-latency services are transmitted within a Transmit Opportunity (TXOP), ensuring that low-latency services are prioritized and transmitted within the acquired TXOP, thereby meeting UHR requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple access points and stations are affiliated to multi-link devices for enhanced service coverage and capacity, then the service capacity and coverage are improved, but the latency control and reliability of low-latency service transmission deteriorate
Solution Approach 1:
The patent segments the service transmission by introducing a specific identifier (first identifier information) in data frames to distinguish low-latency services from other services. This segmentation allows the system to identify and prioritize low-latency service packets, ensuring they receive appropriate handling despite the complex multi-link environment, thereby maintaining transmission reliability while supporting multiple services.
Solution Approach 2:
The patent applies local quality by treating low-latency service data frames differently from other data frames. By adding specific identifier information to low-latency service packets, the system applies differentiated quality handling at the packet level, enabling priority processing, resource allocation, and error handling specifically for low-latency services without affecting other services in the multi-link device environment.
2Reliability
If identifier information is added to data frames to prioritize low-latency service transmission, then the transmission reliability is improved, but the data frame complexity and processing overhead increase
Solution Approach 1:
The patent extracts the priority identification function from the overall data frame structure by adding a dedicated first identifier information field. This extraction allows the identifier to be independently processed and recognized without requiring complex analysis of the entire data frame, thereby improving reliability through clear identification while minimizing the increase in overall data frame complexity.
Solution Approach 2:
The patent changes the parameter of data frame structure by adding a specific identifier field that alters the frame's characteristics. This parameter change enables receiving devices to quickly identify low-latency service packets through simple field checking rather than complex analysis, improving transmission reliability while keeping the added complexity minimal and manageable.
3Loss of time
If low-latency services are transmitted within acquired TXOP to meet latency requirements, then the latency performance is improved, but the risk of TXOP acquisition failure and service transmission failure increases
Solution Approach 1:
The patent applies preliminary action by adding identifier information to data frames before TXOP acquisition and transmission. This preliminary marking enables the receiving device to prepare for priority processing in advance, and allows the transmitting device to track and manage low-latency service packets specifically. If TXOP acquisition fails, the identifier information remains valid for retry mechanisms, thereby reducing the impact of acquisition failure on overall service reliability.
4Productivity
If the first AP transmits non-low-latency service with the first STA while acquiring TXOP, then the resource utilization is improved, but the low-latency service transmission may be delayed or failed
Solution Approach 1:
The patent applies local quality by differentiating the handling of data frames based on the first identifier information. When the first AP transmits both low-latency and non-low-latency services within the same TXOP, the identifier enables the receiving device to separate and prioritize low-latency service packets locally, ensuring they are processed with appropriate urgency even though resources are shared with non-low-latency services, thereby maintaining reliability while achieving high resource utilization.
Data Source
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AI summary
The embodiments of the present disclosure relate to the technical field of mobile communications, and provide low-delay service transmission methods, an electronic device and a storage medium. A low-delay service transmission method is applied to a first access point device (AP), and comprises: under a first link, when obtaining a transmission opportunity (TXOP) and transmitting a non-low-delay service with a first station device (STA), adding first identification information to a data frame of a first low-delay service, the first identification information identifying whether the first low-delay service is transmitted within the TXOP, the first low-delay service including a service of the first AP and the first STA under the first link and/or a service of a second AP and a second STA under a second link, the first AP and the second AP belonging to a same AP MLD, and the first STA and the second STA belonging to a same non-AP MLD. The embodiment of the present disclosure provides a mode for transmitting low-delay services.