Wireless Link Latency Adjustment Under Network Congestion
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Solution Overview
Problem
Conventional LAS mechanisms fail to address the high bit rate demand of latency-critical applications during network congestion, leading to unnecessary data packet storage and inefficient use of wireless resources.
Innovation Solution
A communication management resource dynamically adjusts data packet latency settings based on network congestion and user preferences, allowing temporary increases or decreases in latency to optimize resource use and reduce energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional LAS mechanisms are used to ensure low latency for latency-critical applications, then latency is reduced, but network resource efficiency deteriorates during congestion due to unnecessary data packet storage
Solution Approach 1:
The patent implements dynamic latency adjustment by transitioning from static LAS latency settings to adaptive latency control. The gPFC mechanism continuously monitors network conditions and dynamically modifies packet forwarding behavior, allowing the system to optimize between low latency and resource efficiency based on real-time congestion levels. This dynamic approach resolves the contradiction by making latency a flexible parameter rather than a fixed guarantee.
Solution Approach 2:
The patent changes the latency parameter from a fixed value to a variable that can be adjusted based on network conditions. By implementing gradual latency increases during congestion through gPFC, the system transforms the binary latency guarantee into a continuous spectrum of latency values, enabling optimal resource utilization while maintaining acceptable service quality.
2Productivity
If data packet latency settings are increased to reduce queuing delay during congestion, then network resource efficiency is improved, but latency-critical application performance deteriorates
Solution Approach 1:
The patent applies different latency adjustment strategies to different applications and traffic flows. The gPFC mechanism can selectively increase latency for non-critical applications while maintaining low latency for latency-critical services. This localized differentiation resolves the contradiction by applying quality-of-service variations across different application types rather than uniform latency adjustment.
3Reliability
If conventional ECN schemes are used at the IP layer, then congestion notification is provided, but fine-grained latency control is insufficient to achieve sub-millisecond queuing delay
Solution Approach 1:
The patent introduces gPFC as an intermediary mechanism between the IP layer ECN and the actual packet forwarding. This intermediary layer provides the fine-grained control needed to translate coarse ECN congestion signals into precise sub-millisecond latency adjustments. The gPFC acts as a mediator that bridges the gap between layer-3 congestion notification and layer-2/1 forwarding optimization.
Data Source
AI summary
A communication management resource can be configured to dynamically provide latency adjustments associated with queuing and forwarding data packets to support reduction in energy consumption. For example, the communication management resource can be configured to establish a first wireless link between a wireless base station and a first communication device. Assume that the communication management resource receives a first notification to change data packet latency settings of queuing and forwarding data packets associated with the first mobile communication device, where the data packets are queued for conveyance over the first wireless link. In response to receiving the first notification and other notifications, the communication management resource dynamically adjusts the data packet latency settings associated queuing and forwarding of the data packets over the first wireless link.