QoS Access Device Prioritizing Traffic on External WLANs
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Solution Overview
Problem
User devices connected to external wireless local area networks (WLANs) often experience performance issues such as delays and errors in data traffic, as service providers cannot prioritize transmission of different data types like voice calls and video streams when the network is not their own core network.
Innovation Solution
An access device receives quality of service information to prioritize data traffic types, scheduling delivery based on thresholds for performance, ensuring that critical data types like voice information are delivered before less critical types like email, using service class identifiers and scheduling algorithms to maintain consistent quality of service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If user devices connect to external WLANs, then network coverage and accessibility are improved, but quality of service and transmission reliability deteriorate because service providers cannot prioritize data traffic
Solution Approach 1:
The access device acts as an intermediary between user devices and the service provider network. It receives quality of service information from the service provider, determines service classes for incoming data packets, and enforces prioritization rules locally. This mediator role allows external WLANs to provide service provider-level quality of service without requiring the service provider to directly control the external network infrastructure.
2Reliability
If data traffic prioritization is implemented on external WLANs, then transmission reliability for critical data types is improved, but device complexity increases due to scheduling algorithms and service class management
Solution Approach 1:
The quality of service information is segmented into multiple service classes, each representing different priority levels for data traffic. The access device maintains a service class identifier for each service class and uses these segmented categories to systematically prioritize packets. This segmentation transforms the complex problem of traffic prioritization into a manageable classification system where each packet can be assigned to an appropriate service class based on its type and urgency.
3Reliability
If service class identifiers are used to prioritize data traffic, then delivery reliability for critical services is improved, but information processing overhead increases
Solution Approach 1:
The access device performs preliminary actions by pre-establishing service class identifiers and prioritization rules before data traffic arrives. When quality of service information is received from the service provider, the access device immediately configures its packet classification and scheduling mechanisms with these predetermined service classes. This preliminary setup enables rapid, automated decision-making for incoming packets without requiring complex real-time analysis, thereby reducing processing overhead while maintaining reliable delivery.
Data Source
AI summary
A device is configured to determine quality of service information and determine a set of service classes, associated with a wireless local area network, based on the quality of service information. The device is configured to determine an association between the set of service classes and a set of service identifiers. The device is configured to receive data traffic and to determine a service class, of the set of service classes, associated with the data traffic based on the association between the set of service classes and the set of service identifiers. The device is configured to schedule delivery of the data traffic based on the service class and to deliver the data traffic via the wireless local area network.