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De-jitter buffer adjustments based on estimated delay

A buffer and de-jitter technology, applied in the field of communication, can solve problems such as delay, poor user experience, and increased message reproduction

Active Publication Date: 2014-07-02
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Many de-jitter buffers cannot be changed at all, but only have a conservatively large size, which adds unnecessary delay to the reproduction of messages, resulting in a suboptimal user experience, as described above

Method used

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  • De-jitter buffer adjustments based on estimated delay
  • De-jitter buffer adjustments based on estimated delay
  • De-jitter buffer adjustments based on estimated delay

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0019] Telephone networks have used circuit switching for over 100 years. When a call is made between two parties, the connection needs to be maintained for the entire duration of the call. However, much of the data transferred during that time is wasted. For example, when one party is speaking and the other party is listening, only half of the connection is used. In addition, in many conversations, a considerable amount of time is silent periods, during which neither party speaks. Circuit-switched networks send a lot of unnecessary traffic over a constantly open connection, thus effectively wasting the available bandwidth.

[0020] In a circuit-switched network, data is passed back and forth all the time, but many data networks (eg, the Internet) use a packet-switched method. Packet switching opens a connection between two communicating systems only long enough to send a small piece of data (called a "packet") from one system to the other. These short connections need to ...

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PUM

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Abstract

The systems and methods disclosed in the present invention are used to adapt the de-jitter buffer to the radio link conditions. Radio link characteristics can be detected before they begin to affect packet delivery, for example, by slowing or speeding up delivery delays at subscriber stations. The de-jitter buffer at the receiver, which adds delay to the received packet, can be adaptively resized according to the detected radio link characteristics, so that the size of the de-jitter buffer can be adapted to the expected value before the user station receives the data packet. data grouping.

Description

field of invention [0001] The present invention relates generally to communications and, more particularly, to adaptively managing packet jitter in packet-switched wireless communication systems. Background technique [0002] On a packet-switched network, the sending computer breaks a message into smaller packets and labels each packet with an address that tells the network where to send it. Each packet is then routed to its destination via the most favorable available route, which means that not all packets traveling between two identical communication systems will necessarily follow the same route, even if they come from a single message. When the receiving computer gets these packets, it reassembles them into the original message. [0003] Since each packet is processed individually, it experiences a specific amount of delay that differs from the delay time experienced by other packets within the same message. This variation in delay is known as "jitter" and it can comp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04B1/707H04J13/00H04W28/14
CPCH04J3/0632H04W28/14H04L29/06027H04L65/80H04L1/205H04W36/00H04W36/30H04L65/1101
Inventor S·D·斯平多拉P·J·布拉克
Owner QUALCOMM INC