Per-call quality of service monitor for multimedia communications system
AssigneeTelchemy, Inc.
InventorAlan Douglas Clark
Life of this patent
Estimating the term…
Abstract
A subjective quality monitoring system for packet based multimedia signal transmission systems which determines, during more than one interval of a single call, the level of one or more impairments and determines the effect of said one or more impairments on the estimated subjective quality of said multimedia signal. The quality monitoring system comprises a plurality of quality monitoring functions located at the multimedia to packet conversion points.
Claims30
A method for automatically estimating the subjective quality of a multimedia signal transmitted over a packet connection during a single call, comprising the steps of:
- during more than one interval of a single call determining the level of one or more impairments;
- during more than one interval of said single call determining the effect of said one or more impairments on the estimated subjective quality of said multimedia signal during such interval;
- and
- combining said subjective quality estimates from two or more of such intervals of said single call to determine an estimate of the subjective quality of said multimedia signal.
A system for automatically estimating the subjective quality of a multimedia signal transmitted over a packet connection during a single call wherein the multimedia signal connects two or more multimedia signal to packet conversion points and one or more of said conversion points are physically grouped within an enclosure, comprising a plurality of quality monitors for performing monitoring functions wherein:
- each of said functions performed by said quality monitors, monitors one of said conversion points and each of said quality monitors is contained within the same enclosure as said one of said conversion points;
- each of said functions estimates the subjective quality resulting from the conversion of received packets to a multimedia signal performed by said one of said conversion points during a single call;
- and
- each of said quality monitors for performing monitoring functions
- determines, during more than one interval of said single call, the level of one or more impairments, and
- determines, during more than one interval of said single call, the effect of said one or more impairments on the estimated subjective quality of said multimedia signal.
A system for automatically estimating the subjective quality of a multimedia signal transmitted over a packet connection during a single call, comprising:
- a means for determining, during more than one interval of said single call, the level of one or more impairments;
- a means for determining, during more than one interval of said single call, the effect of said one or more impairments on the estimated subjective quality of said multimedia signal during such interval;
- and
- a means for combining said subjective quality estimates from two or more of such intervals of that same single call to determine an estimate of the subjective quality of said multimedia signal.
Dependencies are inferred from the claim text.