Multi-Link Access Point Information Transmission in Wireless LAN
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Solution Overview
Problem
Current WLAN systems face challenges in efficiently transmitting and receiving information related to access points in multi-link operations, particularly when supporting multiple basic service set identification information (BSSID) sets.
Innovation Solution
A method and device for transmitting and receiving information related to access points in a multi-link operation, which includes transmitting a request frame indicating at least one access point or multi-link device, and receiving a response frame containing multi-link elements related to the access points and multi-link devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multi-link operation with multiple BSSID sets is implemented, then communication efficiency and reliability are improved, but device complexity and information management difficulty increase
Solution Approach 1:
The patent segments the information transmission by dividing it into request frames and response frames, with each frame containing specific multi-link elements. This segmentation allows complex multi-BSSID information to be handled in structured, manageable units, reducing the complexity of information management while maintaining communication reliability across multiple links.
Solution Approach 2:
The patent introduces an intermediary mechanism where a station (STA) sends a request frame to an access point (AP), and the AP responds with a response frame containing the requested multi-link information. This request-response intermediary structure facilitates efficient information exchange in multi-link operations, allowing STAs to obtain necessary BSSID information without overwhelming complexity in information management.
2Loss of information
If detailed multi-link information is transmitted in response frames, then information completeness is improved, but transmission overhead and processing time increase
Solution Approach 1:
The patent applies preliminary action by having stations send request frames that specify exactly what information they need before the AP prepares the response. This allows the AP to pre-prepare only the necessary multi-link elements in the response frame, ensuring information completeness while minimizing processing time by avoiding transmission of unnecessary data.
Solution Approach 2:
The patent changes the parameter of information transmission by using structured frame formats with specific multi-link elements that can be selectively included or excluded based on the request. This parameter-based control allows the system to transmit complete necessary information while optimizing transmission efficiency by including only relevant elements, thereby reducing processing time.
Data Source
AI summary
A method and a device for transmitting or receiving information related to an access point in a wireless LAN system are disclosed. A method for receiving information related to one or more access points (APs) by a station (STA) in a wireless LAN system according to an embodiment of the present disclosure may comprise the steps of: transmitting a request frame including information indicating one or more of a first AP and a first multi-link device (MLD); and receiving a response frame responding to the request frame from a second AP, wherein the response frame includes a first multi-link (ML) element related to one or more of the first AP and the first MLD, and a second ML element related to one or more of the second AP and a second MLD.