Adaptive QoS for Latency Enforcement in IP Wireless Networks
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Solution Overview
Problem
Current Quality of Service (QoS) mechanisms in 4G wireless networks fail to enforce specific timing latency requirements, leading to inadequate differentiation and prioritization of traffic for multimedia applications during network congestion.
Innovation Solution
A latency information system dynamically adjusts QoS settings by retrieving packet timing data, identifying latency issues, and signaling network devices to modify parameters, ensuring that subscriber flows meet but do not exceed latency tolerance requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If current QoS mechanisms are used to prioritize network traffic, then traffic differentiation is provided, but timing latency requirements are not enforced
Solution Approach 1:
The patent implements a feedback mechanism where the QoS enforcement entity receives latency measurements from the monitoring entity, compares actual latency against required latency thresholds, and dynamically adjusts QoS parameters (such as packet scheduling priority, buffer management, or resource allocation) to enforce timing requirements. This closed-loop feedback system ensures that timing latency requirements are reliably enforced while maintaining manageable system complexity through automated control.
2Manufacturing precision
If QoS parameters are adjusted to meet latency requirements, then timing specifications are satisfied, but network resources may be over-provisioned or under-provisioned
Solution Approach 1:
The patent employs dynamic QoS parameter adjustment based on real-time latency measurements and application-specific timing requirements. Instead of static resource allocation, the system continuously monitors actual latency performance and adaptively modifies QoS parameters (such as scheduling priorities, bandwidth allocation, or buffer sizes) to precisely meet latency specifications. This dynamic approach prevents both over-provisioning (wasting resources) and under-provisioning (failing to meet requirements) by optimizing resource allocation in real-time according to actual network conditions and application needs.
Solution Approach 2:
The system changes QoS parameters (such as packet priority levels, scheduling weights, or resource block allocations) based on measured latency performance and required timing specifications. By adjusting these parameters dynamically rather than maintaining fixed allocations, the network can precisely match resource provision to actual latency requirements, avoiding both excess resource consumption and insufficient provisioning.
3Productivity
If network devices signal to modify QoS parameters, then latency performance improves, but control system complexity increases
Solution Approach 1:
The patent combines the QoS monitoring, measurement, and enforcement functions into a coordinated system where the QoS monitoring entity and QoS enforcement entity work together through standardized feedback mechanisms. By merging these functions into an integrated control loop with defined interfaces and protocols, the system improves latency performance while managing control complexity through consolidation and standardization rather than distributed ad-hoc control.
Data Source
AI summary
A device is configured to receive packet timing data, from multiple network devices, for subscriber application traffic over an Internet Protocol (IP) wireless access network and to calculate, based on the packet timing data, timing latencies for a particular subscriber flow. The device is configured to retrieve Quality of Service (QoS) timing specifications for the particular subscriber flow and to determine when the calculated timing latencies for the particular subscriber flow fail to meet the QoS timing specifications for the particular subscriber flow. The device is configured to identify one or more of the network devices that are causing the particular subscriber flow to fail to meet the QoS timing specifications and to instruct the one or more of the network devices to modify QoS parameters for the particular subscriber flow to improve timing latency for the particular subscriber flow.