Data Transmission Device Minimum Delay Tracking for LTE Congestion
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Solution Overview
Problem
In high-speed mobile communication networks like LTE, conventional delay-based TCP techniques inaccurately detect congestion due to frequent variations in physical bands, leading to unnecessary reduction in transmission rates and impaired throughput.
Innovation Solution
A data transmission device and method that detects increases in minimum delay values based on network information, updating the current minimum delay value to accurately estimate queue amounts and prevent erroneous congestion detection, thereby optimizing transmission rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If delay-based TCP techniques are used to detect congestion in high-speed mobile communication networks, then congestion detection capability is improved, but false congestion detection occurs due to frequent variations in physical bands
Solution Approach 1:
The patent introduces an intermediary mechanism (minimum delay value tracker) that mediates between the raw delay measurements and the congestion detection logic. This tracker filters out false congestion signals caused by physical band variations by comparing current delay values against the tracked minimum, thereby improving reliability while maintaining measurement precision
Solution Approach 2:
The patent implements dynamic adaptation by continuously updating the minimum delay value based on current network conditions. This dynamic approach allows the system to adapt to changing physical bands while maintaining accurate congestion detection, resolving the contradiction between measurement precision and reliability
2Stability of the object's composition
If transmission rate is reduced based on congestion detection to stabilize throughput, then throughput stability is improved, but unnecessary rate reduction occurs due to false congestion detection
Solution Approach 1:
The patent implements a feedback mechanism where the tracked minimum delay value is used to validate congestion detection before triggering transmission rate reduction. This feedback loop prevents unnecessary rate reductions by verifying that delay increases are genuine congestion signals rather than physical band variations, thereby maintaining both throughput stability and transmission rate
3Productivity
If physical bands are frequently varied to optimize resource allocation in LTE, then resource utilization efficiency is improved, but minimum delay value increases due to band switching overhead
Solution Approach 1:
The patent performs preliminary action by tracking and recording the minimum delay value before congestion detection is performed. This preliminary tracking allows the system to distinguish between delay increases caused by resource optimization activities and genuine congestion, enabling resource utilization efficiency improvement without excessive delay penalty
Data Source
AI summary
To provide a data transmission device for effectively improving throughput (transmission efficiency) regardless of whether a physical bandwidth in a network varies frequently; the data transmission device for transmitting data to a user terminal via a network and controlling subsequent transmitting operations by correlating delay of a packet pertaining to this transmission with network information includes: a variation detection circuit that detects, on the basis of the delay and the network information, that a minimum value of the delay has increased; and an alteration processing circuit that calculates, when the increase is detected by the variation detection circuit, the increased minimum delay value by using data pertaining to a specific packet, and updating a current minimum delay value with the calculated value.