Multi-BSSID Beacon for Legacy Wireless Compatibility
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Solution Overview
Problem
Legacy electronic devices may not be able to associate with or use access points that support new wireless standards like IEEE 802.11ax, due to incompatible probe responses and beacons.
Innovation Solution
An access point advertises multiple BSSIDs with a common SSID, supporting different IEEE 802.11 standards. It selectively provides probe responses based on the capabilities of the requesting device, ensuring compatibility by using the appropriate BSSID.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an access point uses IEEE 802.11ax standard, then new wireless capabilities are provided, but legacy electronic devices cannot associate with it
Solution Approach 1:
The access point is segmented into multiple virtual BSSs, each supporting different IEEE 802.11 standards (e.g., 802.11ax and 802.11ac). Each BSS has its own BSSID but shares the same SSID, allowing the access point to simultaneously serve both legacy and modern devices without requiring a single compromise configuration
Solution Approach 2:
The access point achieves multi-functionality by supporting multiple wireless standards across different BSSs. A single physical access point can function as both an 802.11ax-compatible AP and an 802.11ac-compatible AP, providing universal service to diverse device types while maintaining optimal performance for each standard
2Reliability
If separate WLANs are created for different standards, then device compatibility is improved, but network management complexity increases
Solution Approach 1:
Multiple BSSs supporting different standards are merged under a single SSID, creating a unified network identity. This allows devices to discover and connect to the appropriate BSS automatically based on their capabilities, eliminating the need for users to manually select between separate WLANs while maintaining standard-specific optimization
3Reliability
If probe responses are customized for each device type, then association success rate improves, but processing overhead increases
Solution Approach 1:
The access point performs preliminary actions by pre-configuring multiple BSSs with different capability sets before devices connect. When a probe request arrives, the AP can quickly determine which pre-configured BSS is appropriate based on the device's advertised capabilities, avoiding the need for complex real-time analysis or iterative negotiation
Data Source
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AI summary
An electronic device may advertise a first BSSID and a second BSSID having a common SSID, separate wireless connection interfaces, and different capabilities, where the first BSSID may support a first IEEE 802.11 standard, and the second BSSID may support one or more previous IEEE 802.11 standards, but may not support the first IEEE 802.11 standard. Then, the electronic device may receive a probe request associated with a second electronic device. Moreover, the electronic device may determine whether the second electronic device supports the first IEEE 802.11 standard based at least in part on one or more fields in the probe request. Next, the electronic device may selectively provide a probe response to the second electronic device with one of the first BSSID and the second BSSID based at least in part on the determination.