Wireless Network Attribute Records via VSE Beacon Frames
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Solution Overview
Problem
Wi-Fi devices lack the ability to accurately identify network location, type, access point, and operator name prior to engaging a network, especially in networks that do not support IEEE 802.11u standards, complicating network selection and policy implementation.
Innovation Solution
Utilizing Vendor-Specific Elements (VSEs) within IEEE 802.11 beacon frames to create a network attributes record that includes network identifiers such as type, provider name, and location, enabling devices to make informed network selection and policy decisions before association.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If proprietary methods using statistically weighted time usage are used to estimate network location and type, then devices can obtain some network information, but the identification accuracy is insufficient and cannot reliably distinguish network attributes
Solution Approach 1:
The patent implements preliminary action by having access points broadcast network attribute information (network type, location, provider name, AP identifier) in beacon frames before devices attempt to connect. This allows devices to identify and select appropriate networks in advance, eliminating the need for inaccurate post-connection speculation and enabling informed network selection decisions.
2Adaptability or versatility
If IEEE 802.11u standards with ANQP protocol are used to query network information, then devices can obtain network attributes, but the method is limited to networks that support these specific standards
Solution Approach 1:
The patent applies universality by implementing a vendor-specific Information Element (IE) structure that can carry network attribute information in a standardized format compatible with existing IEEE 802.11 infrastructure. This approach extends network identification capabilities to all Wi-Fi networks regardless of whether they support IEEE 802.11u, making the solution universally applicable across different network types and providers.
3Reliability
If MAC randomization and privacy warning messages are implemented on all networks, then device security and privacy are enhanced, but the ability to identify network type and location prior to association is completely lost
Solution Approach 1:
The patent applies segmentation by separating network identification information from device identification information. Network attributes (type, location, provider) are broadcast in access point beacon frames, while device MAC addresses remain randomized for privacy. This allows devices to obtain necessary network identification information without compromising security or privacy protections.
Data Source
AI summary
Prior to associating with a wireless network, a wireless device receives from a network access point, a message containing information identifying (i) identity of the network and (ii) network policies; retrieves the information from the message; based on the network identity, determines whether a network attributes record for the network already exists in the device. If not, the device creates a temporary network attributes record for the network. Based on the network policies, the device attempts to associate to and authenticate the network. After successfully associating to and authenticating the network, the device determines whether the network attributes record for the network has expired. If not, the device renews the network attributes record and implements the network policies stored in the network attributes record If the network attributes record has expired, then the device deletes the network attributes record and implements default network policies for the wireless network.