Wireless QoS Access via Authentication Server Mediation
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Solution Overview
Problem
Legacy wireless devices using older protocols, such as 802.11a, are unable to take advantage of the prioritized Quality-of-Service (QoS) provided by newer protocols like 802.11e, resulting in inadequate performance for applications requiring higher service levels.
Innovation Solution
A system and method that allow legacy devices to access differentiated service levels by authenticating and assigning appropriate access categories through a network management arrangement and authentication server, enabling them to utilize higher priority QoS levels without modifying the devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If legacy wireless devices use older protocols (802.11a, 802.11b), then backward compatibility is maintained, but they cannot access prioritized QoS levels and receive inadequate performance
Solution Approach 1:
The patent introduces an authentication server as an intermediary between legacy devices and the QoS mechanism. The server receives authentication requests from legacy devices, verifies their identity, and assigns appropriate access categories (AC0-AC3) based on device type and application requirements. This mediator enables legacy devices to access prioritized QoS levels without requiring protocol modifications, resolving the contradiction between maintaining backward compatibility and enabling QoS access.
2Reliability
If all devices compete for the same default priority level, then protocol simplicity is maintained, but performance for applications like VoIP and video streaming deteriorates
Solution Approach 1:
The patent applies local quality by assigning different access categories (AC0-AC3) to different devices and applications based on their specific requirements. Voice applications receive AC3 (highest priority), video streaming receives AC2, data applications receive AC1, and background traffic receives AC0. This differentiated quality assignment ensures that each application receives appropriate service levels without requiring all devices to adopt complex protocol mechanisms, resolving the contradiction between reliability and complexity.
3Reliability
If newer protocols (802.11e) are deployed to provide prioritized QoS, then service differentiation is improved, but legacy devices are excluded from these improvements
Solution Approach 1:
The patent implements universality by creating a QoS assignment mechanism that serves both legacy devices and modern 802.11e devices through a common authentication server. The server can assign access categories to any device regardless of its protocol version, enabling the QoS infrastructure to function universally across different device types. This multi-functional approach allows the network to provide differentiated service levels while maintaining broad compatibility, resolving the contradiction between QoS performance and legacy device adaptability.
Data Source
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AI summary
Described is a system and method for providing differentiated service levels to wireless devices in a wireless network. The method comprises receiving, on a first network arrangement connected to a network, an authentication request from a wireless device. The network uses a first access protocol having a plurality of access categories and the wireless device uses a second access protocol. The authentication request including one of the plurality of access categories. The wireless device is verified to ensure that it is authorized to communicate at the one of the plurality of access categories. When the wireless device is verified as authorized, a response is communicated to a second network arrangement that indicates the one of the plurality of access categories is used for communications with the wireless device.