Response time measurement for adaptive playout algorithms

Details Response time measurement for adaptive playout algorithms Response time measurement for adaptive playout algorithms

2006-05-23

2006-05-23

Nguyen, Steven (Department: 2665)

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

C370S516000, C370S352000

Reexamination Certificate

active

07050465

ABSTRACT:
The present invention discloses a system which comprises two endpoints (1, 2) communicating with each other by means of a packet-switched network. The endpoints (1, 2) use adaptation algorithms for estimating jitter from packet arrival times and for modifying silence period lengths according to the latest estimate. According to the present invention, the endpoints (1, 2) are able to measure a response time (ρ) at a certain point of time and use it as a parameter in the adaptation algorithms.

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patent: WO 97/22201 (1997-06-01), None
Warren A. Montgomery; “Techniques for Packet Voice Synchronization”, IEEE Journal of Selected Areas In Communications, vol. SAC-1, No. 6, Dec. 1983, pp. 1022-1028.
Sue B. Moon, Jim Kurose and Don Towsley; “Packet audio playout delay adjustment: performance bounds and algorithms”, Multimedia Systems, Springer Verlag 1998, pp. 17-28.
Ramachandran Ramjee, Jim Kurose, Hennig Schulzrinne and Don Towsley; “Adaptive Playout Mechansims for Packetized Audio Applications in Wide-Area Networks”, in Proceedings of the Conference on computer communications, (IEE Infocom, Toronto, Canada), IEE Computer Society Press, Los Alamitos, California, Jun. 1994, pp. 680-688.
International Search Report for PCT/EP99/00179.

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