End-to-End QoS Control for Remote Service Gateways
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Solution Overview
Problem
Existing systems face challenges in maintaining end-to-end Quality of Service (QoS) control for Wi-Fi-enabled devices accessing remote networks, as QoS bits are often lost or not enforced consistently across the network, leading to difficulties in adapting to changing bandwidth conditions and ensuring optimal quality of service.
Innovation Solution
A system comprising a bandwidth manager, a policy server, a near-end gateway within a Wi-Fi network, and a far-end gateway within a service provider network, which monitors bandwidth usage and dynamically adjusts service profiles to enforce end-to-end QoS control by storing and managing service profiles that specify QoS classes and bandwidth thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If QoS bits are tagged at the wireless access point, then QoS level is specified for the call, but QoS bits are lost or not enforced consistently across the network
Solution Approach 1:
The patent introduces a network gateway as an intermediary component that receives QoS-tagged packets from the wireless access point and maintains QoS information through the network core. This gateway acts as a mediator between the access point and remote networks, ensuring QoS bits are not lost and are enforced consistently across different network segments by translating and preserving QoS markings throughout the network path.
Solution Approach 2:
The system implements feedback mechanisms where the network gateway monitors QoS enforcement status and bandwidth conditions, then dynamically adjusts QoS policies and service profiles. This feedback loop ensures that QoS information is maintained and enforced consistently by continuously monitoring network conditions and adjusting parameters to prevent QoS bit loss and maintain service quality across the entire network path.
2Adaptability or versatility
If static QoS policies are enforced at the wireless access point, then initial QoS control is established, but the system cannot adapt to changing bandwidth conditions
Solution Approach 1:
The patent implements dynamic QoS service profiles that can be modified in real-time based on network conditions. The network gateway monitors bandwidth availability and dynamically adjusts QoS parameters such as priority levels, bandwidth allocations, and traffic shaping rules. This allows the system to adapt to changing bandwidth conditions while maintaining manageable complexity through automated policy adjustment mechanisms.
Solution Approach 2:
The system employs self-service mechanisms where the network gateway automatically monitors bandwidth conditions and adjusts QoS service profiles without requiring manual intervention. The gateway autonomously detects bandwidth changes and modifies QoS parameters accordingly, reducing the operational complexity while enhancing adaptability to dynamic network conditions through automated self-adjustment capabilities.
3Reliability
If QoS control is implemented only at the wireless access point, then local QoS enforcement is achieved, but end-to-end QoS control across the network is not maintained
Solution Approach 1:
The patent segments the QoS control function across multiple network components: the wireless access point handles local QoS tagging, the network gateway maintains QoS information through the network core, and remote network endpoints enforce QoS policies. This segmentation distributes the QoS management complexity across manageable segments while achieving end-to-end QoS control through coordinated operation of these segmented components.
Solution Approach 2:
The network gateway serves as an intermediary that bridges the local QoS enforcement at the wireless access point with end-to-end QoS control across the network. It receives QoS-tagged traffic, maintains QoS information through the network core, and ensures consistent QoS enforcement at remote endpoints, thereby extending local QoS control to end-to-end coverage without requiring complete redesign of the entire network architecture.
Data Source
AI summary
Systems and methods of performing end-to-end QoS control during the access of Wi-Fi-enabled communications devices to remote networks. The systems and methods employ a bandwidth manager, a policy server, a near-end gateway located within a Wi-Fi network, and a far-end gateway located within a service provider network. Throughout the duration of a call placed by a wireless device user using a Wi-Fi-enabled communications device, the bandwidth manager can have access to service profiles stored in a database of the policy server for use in monitoring levels of bandwidth usage, for tunneled and/or local breakout traffic, at least at the near-end gateway to the service provider network and at the far-end gateway to a remote network, and performing end-to-end QoS control by dynamically making adjustments, as needed, to one or more service profiles at least at the near-end gateway and/or at the far-end gateway based on the monitored bandwidth usage levels.