MLD Probe Request Frame Link Identifier Selection
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Solution Overview
Problem
Current wireless LAN systems face challenges in efficiently managing and utilizing multiple links in next-generation wireless LAN systems, particularly in obtaining information on links between Multi-Link Devices (MLDs) to optimize communication.
Innovation Solution
A method and apparatus are proposed to enable a receiving MLD to request information on all or specific links of a transmitting MLD in MLD communication, by transmitting a probe request frame with link identifiers for the desired links, thereby reducing overhead and improving link management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a receiving MLD requests information on all links of a transmitting MLD by including identifiers for all links in the probe request frame, then complete link information can be obtained, but the overhead of the probe request frame increases
Solution Approach 1:
The patent extracts only the necessary link information from the complete set of link identifiers. The receiving MLD selectively includes only those link identifiers in the probe request frame that it actually needs information about, rather than including all possible link identifiers. This extraction approach reduces the frame overhead while maintaining the completeness of necessary link information.
Solution Approach 2:
The patent applies partial action by requesting only a subset of link information rather than all link information. The receiving MLD determines which specific links it needs information about and includes only those link identifiers in the probe request, performing a partial information gathering operation that reduces overhead while obtaining sufficient link information for its needs.
2Quantity of substance
If the probe request frame includes identifiers for specific links only, then the overhead is reduced, but the receiving MLD may not obtain complete link information
Solution Approach 1:
The receiving MLD performs a targeted partial information gathering operation by including only the specific link identifiers it needs in the probe request frame. This partial action approach reduces frame overhead while obtaining sufficient link information for the receiving MLD's specific requirements, rather than unnecessarily requesting all link information.
Solution Approach 2:
The patent applies local quality by customizing the probe request frame content according to the specific needs of the receiving MLD. Different receiving MLDs can include different sets of link identifiers based on their individual requirements, allowing each device to optimize its information requests for its local context and needs.
3Productivity
If multiple link identifiers are included in the probe request frame, then information on multiple links can be obtained through a single request, but the frame size and processing complexity increase
Solution Approach 1:
The patent applies partial action by including only the necessary number of link identifiers in the probe request frame rather than all possible identifiers. This selective approach maintains the efficiency benefit of obtaining multiple link information through a single request while avoiding the excessive frame size and processing complexity that would result from including all possible link identifiers.
Data Source
AI summary
Proposed are a method and device for acquiring information on links between MLDs in a wireless LAN system. Specifically, a receiving MLD transmits a probe request frame to a transmitting MLD through a first link. The receiving MLD receives a probe response frame from the transmitting MLD through the first link. The transmitting MLD comprises: a first transmitting STA operating in the first link; a second transmitting STA operating in a second link; and a third transmitting STA operating in a third link. The receiving MLD comprises a first receiving STA operating in the first link. When the first receiving STA requests for information on the second and third links, the probe request frame includes link identifiers for the second and third links. When the first receiving STA requests for information on all the links, the probe request frame does not include link identifiers for all the links.