Measurement of packet delay variation

Details Measurement of packet delay variation Measurement of packet delay variation

H - Electricity

04

L

H04L 12/28 (2006.01) H04L 12/24 (2006.01) H04L 12/26 (2006.01) H04L 12/56 (2006.01) H04L 29/02 (2006.01)

Patent

CA 2452559

Packet communication systems, or networks, are commonly used for the conveyance of information for data applications. The receive rate of incoming packets varies as congestion in the network causes variation in the amount of time for a packet to traverse the network before being placed into the JAB (Jitter Absorption Buffer). The disclosure contains methods for calculating a real time measurement of PDV (Packet Delay Variation). This real time measurement is useful as a metric on the quality of the service provided by the network or as a trigger for dynamic adjustment of the operation of equipment to optimize for current network conditions. More specifically, the disclosure includes a method that uses variations in the buffer depth of the JAB to measure PDV. This abstract is provided as a tool for those searching for patents, and not as a limitation on the scope of the claims.

L'invention concerne des systèmes ou des réseaux de communication de paquets, couramment utilisés dans l'acheminement d'informations pour des applications de données. La vitesse de réception des paquets entrants varie en fonction de l'encombrement du réseau, cet encombrement faisant varier le temps que met un paquet à traverser le réseau avant d'être placé dans le tampon d'absorption de gigue (JAB). L'invention concerne des procédés permettant de calculer une mesure en temps réel des variations de retard des paquets (PDV). Cette mesure en temps réel sert à mesurer la qualité de service fournie par le réseau ou sert de déclencheur d'ajustement dynamique du fonctionnement de l'équipement, pour optimiser les conditions de réseau de courant. L'invention concerne plus particulièrement un procédé utilisant des variations dans la profondeur de tampon du JAB pour mesurer les variations de retard des paquets.

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