Method of dynamically adapting the size of a jitter buffer

Abstract

The present invention relates to a receiver system in a communication system supporting packet-based communicatior (e.g., an IP-network), including a receiver, speech decoder (40) and a jitter buffer (20) for handling delay variations in the reception of a speech signal consisting of packets containing frames with encoded speech. A jitter buffer controller (50) is provided for keeping information about the functional size of the jitter buffer (20) and for providing the speech decoder (40) with control information, such that the speech decoder (40), based on that information. provides a dynamic adaptation of the size of the jitter buffer (20) using the received encoded, packetized speech signal. The invention also relates to a method of adapting the functional size of the jitter buffer of a receiver system.

Description

PRIORITY CLAIM [0001] This patent application claims priority to PCT patent application number PCT / SE01 / 01140 filed May 31, 2000.FIELD OF THE INVENTION [0002] The present invention relates, generally, to a receiver system in a communication system supporting packet-based communication of speech and data (e.g., an IP-network). More specifically, the present invention relates to a system comprising a receiver, a speech decoder and a jitter buffer for handling variations in the reception of a speech signal consisting of packets containing frames with encoded speech. BACKGROUND OF THE INVENTION [0003] One area undergoing fast development within telecommunications is voice over IP (VOIP) (e.g., Transmission Control Protocol / Internet Protocol-TCP / IP). Developments in this area initially focused on making phone calls at very low costs. Now, developments within this telecommunications area seem promising for new and different business applications. Because both speech and data use the same ...

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