MLD Probe Request Frame for Selective AP Information
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Solution Overview
Problem
In wireless local area networks (WLANs), especially in next-generation systems like IEEE 802.11be, there is a need to improve signaling techniques to effectively utilize increased spatial streams, which requires efficient information exchange without increasing frame overhead.
Innovation Solution
A method and apparatus where a non-AP station in a multi-link device (MLD) requests only complete information on other access points (APs) through a probe request frame, allowing the receiving MLD to receive only necessary information, thereby reducing frame overhead and enabling power saving modes without additional requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a non-AP STA requests complete information on peer AP through probe request frame, then all AP information is obtained, but frame overhead increases
Solution Approach 1:
The patent extracts only the necessary information (complete information on other APs excluding peer AP) from the probe response frame based on the receiver's specific needs indicated in the profile field, removing unnecessary information about the peer AP to reduce frame overhead
Solution Approach 2:
The patent applies different information delivery strategies to different APs: for the peer AP, only partial information is provided, while for other APs, complete information is provided based on the receiver's requirements, as indicated in the profile field of the probe request frame
2Loss of information
If complete information on all APs is transmitted in probe response frame, then information completeness is ensured, but power consumption increases
Solution Approach 1:
The patent extracts and transmits only the necessary information (complete information on other APs excluding peer AP) in the probe response frame based on the receiver's specific needs, reducing the amount of data transmission and processing required, thereby lowering power consumption
Solution Approach 2:
The patent implements partial action by providing complete information only for other APs (not peer AP) based on the receiver's requirements, avoiding the excessive transmission of all AP information and reducing energy consumption
Data Source
AI summary
Provided are a method and apparatus for receiving only complete information on other access points (APs) in a transmitting multi-link device (MLD) in a wireless local area network (WLAN) system. Specifically, a receiving MLD transmits a probe request frame to the transmitting MLD through a first link. The receiving MLD receives a probe response frame from the transmitting MLD through the first link. The probe request frame includes a frame body and a profile field of a second receiving station (STA). When a first receiving STA does not request complete information on the first link and requests complete information on the second link, the complete information on the second link is requested based on the profile field of the second receiving STA. The probe response frame does not include the complete information on the first link, and includes only the complete information on the second link.