WLAN Per-STA Profile Inheritance for Multi-BSSID Reliability
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Solution Overview
Problem
Existing WLAN systems lack methods for transmitting and receiving inheritance-based information, particularly in relation to multi-link devices (MLD) and multiple basic service set identifiers (BSSID), which are crucial for advanced wireless communication environments supporting high throughput, low latency, and ultra-high reliability.
Innovation Solution
A method and device for transmitting and receiving inheritance-based information in a WLAN system, involving a station (STA) requesting and receiving a response frame from an access point (AP) that includes per-STA profiles based on non-transmitted basic service set identifiers (BSSID) to determine inheritance or non-inheritance, and the AP responding accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inheritance-based information transmission methods are implemented in WLAN systems, then communication reliability and flexibility are enhanced, but device complexity and protocol overhead increase
Solution Approach 1:
The patent segments the BSSID information into transmitted BSSID (active) and non-transmitted BSSID (inactive/backup). The per-STA profile inheritance mechanism is applied selectively to specific BSSIDs rather than uniformly across all BSSIDs, reducing overall protocol complexity while maintaining reliability through targeted inheritance relationships.
Solution Approach 2:
The patent establishes inheritance relationships in advance through per-STA profile configurations before actual communication needs arise. The non-transmitted BSSID profiles are pre-configured and linked to transmitted BSSIDs, allowing rapid failover and inheritance activation without real-time configuration complexity, thus enhancing reliability while managing device complexity.
2Loss of information
If per-STA profiles with inheritance are transmitted for multiple BSSIDs, then information completeness improves, but frame size and transmission overhead increase
Solution Approach 1:
The patent uses reference copying instead of full profile duplication. The per-STA profile for non-transmitted BSSIDs contains inheritance indicators that reference the transmitted BSSID profile, rather than duplicating all profile data. This maintains information completeness through reference integrity while significantly reducing frame data volume through compact referencing mechanisms.
Solution Approach 2:
The transmitted BSSID per-STA profile serves multiple functions: it acts as the active configuration for the transmitted BSSID and simultaneously serves as the inheritance template for non-transmitted BSSIDs. This multi-functionality eliminates redundant profile transmissions, reducing frame data volume while maintaining complete information availability through the universal template approach.
3Adaptability or versatility
If inheritance determination is based on non-transmitted BSSID profiles, then system adaptability improves, but processing complexity increases
Solution Approach 1:
The system implements self-service inheritance determination where the STA autonomously evaluates inheritance conditions based on pre-configured per-STA profile parameters and current communication context. The inheritance mechanism automatically activates or deactivates based on transmitted/non-transmitted BSSID states without requiring complex external control, enhancing adaptability while managing processing complexity through autonomous decision-making.
Solution Approach 2:
The inheritance relationships are dynamically adjustable based on real-time BSSID transmission states and communication requirements. The per-STA profile inheritance indicators can be dynamically modified to reflect changing network conditions, allowing the system to adapt flexibly while keeping processing complexity manageable through structured dynamic adjustment rules rather than arbitrary complexity.
Data Source
AI summary
A method and a device for transmitting and receiving inheritance-based information in a wireless LAN system are disclosed. A method performed by means of a station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: transmitting, to a first access point (AP), a request frame including information related to a second AP and/or a first multi-link device (MLD); and receiving, from the first AP, a response frame for the request frame, wherein the response frame includes one or more per-STA profiles, and inheritance or non-inheritance for the one or more per-STA profiles can be based on a non-transmitted (non-Tx) basic service set identifier (BSSID) profile.