Frame Loss Measurement Selection in Telecommunication Networks

Solution Overview

Problem

Current frame loss measurement methods in telecommunication networks face challenges in accuracy, particularly when data activity is low, as the Synthetic Loss Measurement (SLM) method may provide inaccurate results due to insufficient SLM messages, while the Loss Measurement Messages (LMM) method may indicate zero frame loss when no user frames are transmitted, leading to incomplete network availability assessments.

Innovation Solution

A method for selecting frame loss measurements that considers the frame rate of data transmitted and specified network events, determining the accuracy thresholds for SLM and LMM reports, and switching between them based on these criteria to ensure accurate reporting, including determining the minimum number of SLM messages required for the SLM accuracy threshold and selecting the more accurate measurement method for each interval.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the SLM method is used for frame loss measurement, then measurement capability is maintained, but measurement precision deteriorates when data activity is low due to insufficient SLM messages

Engineering Contradiction:

Improvemeasurement capabilityVSAvoidframe loss measurement accuracy

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The system changes the measurement method based on data activity parameters. When data activity is low and SLM messages are insufficient, the system switches from SLM method to LMM method, thereby adapting the measurement approach to maintain precision under varying conditions

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system uses feedback about data activity levels and SLM message counts to dynamically select between measurement methods. By monitoring the number of SLM messages and data activity, the system adjusts its measurement strategy to ensure accurate frame loss measurement

Inventive Principle:

Principle #23Feedback

2Measurement precision

If the LMM method is used for frame loss measurement, then measurement precision is improved, but reliability deteriorates when no user frames are transmitted indicating zero frame loss

Engineering Contradiction:

Improveframe loss measurement accuracyVSAvoidnetwork availability assessment

Core Design Contradiction:

Measurement precisionVSReliability

Solution Approach 1:

The system changes the measurement method based on data activity parameters. When data activity is low and SLM messages are insufficient, the system switches from SLM method to LMM method, thereby adapting the measurement approach to maintain precision under varying conditions

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The system uses SLM messages as an intermediary to detect network availability when direct LMM measurement is unreliable. SLM messages serve as a mediator that can indicate network status even when user data traffic is absent

Inventive Principle:

Principle #24Intermediary (Mediator)

3Measurement precision

If multiple measurement methods are implemented, then measurement precision is improved, but device complexity increases

Engineering Contradiction:

Improveframe loss measurement accuracyVSAvoidmeasurement system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The system implements dynamic selection between measurement methods based on real-time conditions. Rather than using both methods simultaneously, the system dynamically switches between SLM and LMM methods based on data activity levels, reducing complexity while maintaining precision

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes the measurement method based on data activity parameters. When data activity is low and SLM messages are insufficient, the system switches from SLM method to LMM method, thereby adapting the measurement approach to maintain precision under varying conditions

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9559926B2Selecting frame loss measurement

Publication Date: 2017.01.31 ADTRAN INC

AI summary

Methods, systems, and apparatus for selecting frame loss measures are disclosed. In one aspect, a Synthetic Loss Measurement (SLM) report for a given interval for a network managed entity that includes at least two network nodes is received. A Loss Measurement Message (LMM) report for a given interval for the network managed entity is received. For the given interval and from the SLM and LMM reports, a reporting measurement for the network managed entity is selected based, at least in part, on a frame rate of data transmitted over the network managed entity during the given interval or an occurrence of a specified network event during the given interval. Frame loss information for the given interval for the network managed entity based on the selected reporting measurement is reported.