Processing

Please wait...

Settings

Settings

1. WO2000042749 - ADAPTIVE JITTER BUFFERING

Publication Number WO/2000/042749
Publication Date 20.07.2000
International Application No. PCT/SE1999/002493
International Filing Date 28.12.1999
Chapter 2 Demand Filed 21.07.2000
IPC
H04J 3/06 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
H04L 12/56 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
12Data switching networks
54Store-and-forward switching systems
56Packet switching systems
CPC
H04J 3/0632
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
JMULTIPLEX COMMUNICATION
3Time-division multiplex systems
02Details
06Synchronising arrangements
062Synchronisation of signals having the same nominal but fluctuating bit rates, e.g. using buffers
0632Synchronisation of packets and cells, e.g. transmission of voice via a packet network, circuit emulation service [CES]
H04L 47/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
10Flow control or congestion control
H04L 47/22
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
10Flow control or congestion control
22Traffic shaping
H04L 47/283
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
47Traffic regulation in packet switching networks
10Flow control or congestion control
28using time considerations
283Network and process delay, e.g. jitter or round trip time [RTT]
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (publ) [SE/SE]; S-126 25 Stockholm, SE
Inventors
  • LUNDQVIST, Stellan; SE
  • OHLSSON, Mattias; SE
  • NYGREN, Jörgen; SE
Agents
  • KLAS, Norin; Ericsson Radio Systems AB Common Patent Dept. S-164 80 Stockholm, SE
Priority Data
09/231,88614.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ADAPTIVE JITTER BUFFERING
(FR) STOCKAGE ADAPTATIF DE GIGUE EN FILE D'ATTENTE
Abstract
(EN)
In a packet communication system, the delay time needed in a jitter buffer is determined, enabling a smooth data feed to an application without excessive delays, by methods and apparatus that vary the size of the jitter buffer based on an estimated variation of packet transmission delay derived from the times of arrival of stored packets. A variance buffer stores variances of the times of arrival of stored packets, and the estimated variation of packet transmission delay is derived from the stored variances. The size of the jitter buffer can changed preferentially during periods of discontinuous packet transmission.
(FR)
Dans un système de communication par paquets, on détermine le délai nécessaire dans une file d'attente pour gigue, ce qui permet d'alimenter une application avec des données de façon coulante et sans délais excessifs, et ce au moyen d'un appareil qui modifie la taille de la file d'attente pour gigue sur la base d'une variation estimée du délai de transmission de paquets, dérivée du temps d'arrivée des paquets stockés. Une file d'attente pour variances stocke les variances du temps d'arrivée des paquets stockés, après quoi la variation estimée du délai de transmission de paquets est dérivée à partir des variances stockées. La taille de la file d'attente pour gigue peut être modifiée, de préférence pendant les périodes de transmission discontinue de paquets.
Also published as
EP1999965699
Latest bibliographic data on file with the International Bureau