Normalized Traffic Shaper Gain Evaluation for Mobile Battery Savings
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Solution Overview
Problem
Evaluating the performance of traffic shapers in terms of quality or 'goodness' is challenging due to the lack of objective standards, making it difficult to compare different shapers and find the optimal one for given traffic conditions without sacrificing user experience or resource utilization.
Innovation Solution
A method and device that calculate a normalized traffic shaper gain by comparing estimated battery savings before and after shaping, normalized with the lower bound of battery savings as a function of transmission rate, to objectively evaluate the quality of traffic shapers for mobile terminals operating under specific DRX settings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If traffic shaping is applied to save battery resources, then battery savings are improved, but it becomes difficult to objectively evaluate and compare different shaper performance
Solution Approach 1:
The patent transforms the evaluation from subjective qualitative assessment to objective quantitative measurement by introducing specific parameters: battery savings measure, lower bound function, and normalized traffic shaper gain. These parameters enable precise comparison of different shaper performances while maintaining battery savings optimization.
Solution Approach 2:
The patent establishes a feedback mechanism where the evaluation results (normalized traffic shaper gain) are used to select optimal shapers, which then influence subsequent traffic shaping decisions. This closed-loop approach continuously improves evaluation accuracy and shaper selection based on measured performance data.
2Measurement precision
If normalized traffic shaper gain is calculated to enable objective comparison, then evaluation accuracy is improved, but computational complexity increases
Solution Approach 1:
The patent breaks down the complex evaluation process into distinct computational segments: acquiring battery savings measures, determining lower bound functions, calculating ratios, and normalizing results. This segmentation allows the system to manage complexity through modular computation while maintaining high evaluation accuracy.
3Use of energy by moving object
If traffic shaping delays packets to save battery, then battery life is improved, but packet transmission delay increases
Solution Approach 1:
The patent applies dynamic traffic shaping that adapts to real-time network conditions and traffic patterns. By using normalized traffic shaper gain evaluation, the system dynamically selects shapers that optimize the balance between battery savings and delay, rather than using fixed shaping rules that would consistently increase latency.
Data Source
AI summary
The present invention relates to a method and device of evaluating a traffic shaper used for shaping at least two traffic flows of a mobile terminal operating according to a particular DRX setting in a mobile communications network. The method comprises the steps of acquiring an estimated lower bound of battery savings as a function of transmission rate of each traffic flow (f1, f2) of the at least two traffic flows for the mobile terminal according to the particular DRX setting. Further, the method comprises acquiring an estimated battery savings measure for said each traffic flow (f1, f2) before shaping, and acquiring an estimated battery savings measure for said each traffic flow (f1, f2) after shaping. Moreover, the method comprises calculating normalized traffic shaper gain as a relation between the estimated battery savings measure for the shaped traffic flow and the estimated battery savings measure for the unshaped traffic flow for said each traffic flow (f1, f2), said relation further being normalized with the respective estimated lower bound of battery savings, and determining whether to use the traffic shaper (S1) for said at least two traffic flows (f1, f2) on the basis of the calculated normalized traffic shaper gain.