Multi-Link WLAN Deactivation with Timed Control Fields
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Solution Overview
Problem
Existing wireless local area network (WLAN) systems lack efficient methods for deactivating specific links during multi-link operations, which can lead to inefficiencies in frame transmission and resource allocation.
Innovation Solution
A method involving a receiving device that receives a physical protocol data unit (PPDU) with a first control field containing information on link disablement and a time point for disabling the first link, allowing for precise control over link activation and deactivation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If link deactivation information is not provided in the control field, then the receiving device can simplify the protocol structure, but the STA cannot determine when to stop frame transmission leading to inefficient resource utilization
Solution Approach 1:
The control field includes a disable time field that specifies in advance when the first link will be disabled. This allows the receiving device to prepare for link deactivation by knowing the exact time point, enabling STAs to stop frame transmission at the appropriate moment without needing complex real-time negotiation protocols.
Solution Approach 2:
The control field acts as an intermediary carrier that conveys link deactivation information from the transmitting device to the receiving device. By embedding disable time information in this control field, the system achieves efficient resource utilization without requiring additional complex communication mechanisms.
2Reliability
If the receiving device continuously monitors link status, then it can respond to link changes promptly, but it increases processing complexity and time consumption
Solution Approach 1:
The control field provides feedback information about the link deactivation time point to the receiving device. Instead of continuous monitoring, the system uses this feedback mechanism where the transmitting device informs the receiving device in advance about when the link will be disabled, allowing prompt response without continuous processing.
Solution Approach 2:
The disable time field provides advance information about link deactivation, allowing the receiving device to prepare for the change in advance rather than reacting to continuous status changes. This reduces processing time while maintaining reliable link status awareness.
Data Source
AI summary
In a Wireless Local Area Network system, a reception device can receive information about link deactivation, and deactivate a link. The proposed method includes receiving a physical protocol data unit (PPDU) including a first control field in a first link. In the method, the first control field may include information related to disablement of the first link and information on a time point at which the first link is disabled. The proposed method further includes disabling the first link based on the first control field.