US 2006/0050633 A1 · Method and apparatus for performing Quality-of-Service calculations on packet-based networks

Abstract

A method and apparatus for performing Quality-of-Service (QoS) calculations on packet-based communications networks using a QoS measure which is based on data included in non-lost packets, as well as on data included in lost packets, when the proper interpretation of the data in non-lost packets depends upon data in one of the lost packets. Two new QoS measures that address the limitations inherent in the prior art PLR (Packet Loss Rate) measure are introduced. The Packet Loss Distortion Rate (PLDR) measure determines both packets which are lost, as well as packets whose proper interpretation depends on one or more packets which have been lost. The Media Distortion Rate (MDR) measures the actual quantity of media material that is lost, regardless of how the material is grouped into individual packets.

Claims20

Dependent claims

A method for calculating a Quality-of-Service measure in a packet-based communications network under packet loss conditions, the method comprising the steps of:

identifying, over a given time interval, one or more lost packets;
identifying, over said given time interval, one or more received packets which comprise data whose proper interpretation is based on data comprised in one or more of said identified lost packets;
and
calculating said Quality-of-Service measure for said given time interval based on both said identified lost packets and on said identified received packets which comprise data whose proper interpretation is based on data comprised in one or more of said identified lost packets.

1 more element

An apparatus for calculating a Quality-of-Service measure in a packet-based communications network under packet loss conditions, the apparatus comprising a processor adapted to:

identify, over a given time interval, one or more lost packets;
identify, over said given time interval, one or more received packets which comprise data whose proper interpretation is based on data comprised in one or more of said identified lost packets;
and
calculate said Quality-of-Service measure for said given time interval based on both said identified lost packets and on said identified received packets which comprise data whose proper interpretation is based on data comprised in one or more of said identified lost packets.

1 more element

Dependencies are inferred from the claim text.

Method and apparatus for performing Quality-of-Service calculations on packet-based networks

Life of this patent

Method and apparatus for performing Quality-of-Service calculations on packet-based networks

Life of this patent

Abstract

Claims20