Wi-Fi Multi-Link Frame Configuration to Avoid Channel Collisions
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Solution Overview
Problem
In existing Wi-Fi systems, data transmission delays occur due to air interface collisions when an access point (AP) and a station (STA) preempt channel links for uplink and downlink data transmission, leading to inefficient utilization of channel links.
Innovation Solution
The method involves configuring transmission modes of non-control frames on at least two configurable channel links based on link attributes, using link indication information and configuration indications to avoid collisions and improve channel link utilization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the AP and STA preempt channel links for uplink and downlink data transmission, then channel link utilization is improved, but air interface collisions occur causing data transmission delays
Solution Approach 1:
The patent segments the channel links into different types (first type for downlink, second type for uplink, third type for both directions) and assigns different transmission modes to non-control frames on different channel links. This segmentation prevents collisions by ensuring that uplink and downlink transmissions occur on separate dedicated channel links, thereby resolving the contradiction between improving channel utilization and avoiding transmission delays
Solution Approach 2:
The patent applies local quality by configuring different transmission modes for non-control frames on different channel links based on their specific attributes. Each channel link is optimized for its intended purpose (downlink-only, uplink-only, or bidirectional), allowing the system to maximize overall productivity while preventing harmful collisions through localized transmission mode assignments
2Ease of operation
If both AP and STA send data on the same channel link, then channel accessibility is improved, but data collisions occur requiring retransmission
Solution Approach 1:
The patent segments channel links into first type channel links (for downlink only), second type channel links (for uplink only), and third type channel links (for both uplink and downlink). By assigning non-control frames to specific channel link types based on their transmission direction, the system maintains easy channel accessibility while preventing data collisions through dedicated path assignments, thereby improving transmission reliability
Data Source
AI summary
A WI-FI communication method is applied to a communication system including a first device and a second device, and the first device communicates with the second device using at least two configurable channel links. The method includes sending, by the first device, link indication information to the second device, where the link indication information is used to indicate link attributes of the at least two channel links, receiving, by the first device, a first configuration indication fed back by the second device in response to the link indication information, and configuring, by the first device, transmission modes of non-control frames on the at least two channel links based on the first configuration indication.