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Reactivity bandwidth control for stream data

A parameter and gain parameter technology, applied in the field of network communication, can solve problems such as dynamic blocking changes and problems

Inactive Publication Date: 2004-08-04
MICROSOFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, the second method is problematic for devices with limited buffer memory such as audio / video mobile phones or watches
The third approach does not address inherent bandwidth bottlenecks (such as wireless connections) or dynamic congestion variations caused by multiple applications sharing the bandwidth available at the bottleneck
[0005] Furthermore, none of the existing approaches specifically addresses reactive bandwidth control in response to the initial blocking of real-time communications commonly employed in multimedia applications.

Method used

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  • Reactivity bandwidth control for stream data
  • Reactivity bandwidth control for stream data
  • Reactivity bandwidth control for stream data

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Embodiment Construction

[0023] Under initial congestion conditions, real-time communications on the network can be adjusted to improve QoS. The system detects initial network congestion and feeds back information about the initial congestion back to the sender. Based on this information, the transmission rate is appropriately changed using a control algorithm that calculates the changed transmission rate based on weight parameters, gain parameters and information from congestion reports. The changed transmission rate improves the use of the available bandwidth at the sender to maintain acceptable QoS at the receiver.

[0024] It should also be understood that reactive bandwidth control can be applied in a variety of situations including, but not limited to, control of transmit power in wireless networks, adjustment of process requests in distributed computing applications, and adjustment of storage requests in storage applications. Generally, general resource usage can be controlled in response to a...

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Abstract

Real time communications over a network are adjusted to improve the quality of service (QoS) under incipient congestion conditions. The system detects incipient network congestion and feeds back information regarding the incipient congestion back to the transmitter. Based on this information, the transmission rate is altered appropriately using a control algorithm, which computes the altered transmission rate based on a weight parameter, a gain parameter, and information from a congestion report. The altered transmission rate improves the transmitter's use of the available bandwidth to maintain an acceptable QoS at the receiver.

Description

technical field [0001] The present invention relates generally to network communications, and more particularly to controlling the use of bandwidth in network communications. Background of the invention [0002] Many current multimedia applications, such as streaming video and audio players, were originally designed to work from attached local storage (eg, CD or hard disk) or over a high-quality, low-latency network (eg, a lightly loaded local area network or LAN). However, when running over a lower quality network such as a Wide Area Network (WAN), packet loss and latency due to network congestion often impairs the real-time work of multimedia applications, thereby providing a poor user experience, often described as poor Poor Quality of Service (QoS). For example, video frames may be dropped, or video and audio synchronization may be broken, all resulting in lower quality multimedia performance. [0003] To address these issues, some current multimedia applications have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F9/46G06F15/16H04L12/24H04L12/28H04L12/56
CPCH04L47/12H04L47/2416H04L47/31H04L47/25H04L47/283H04L47/263H04L47/10H04L12/28
Inventor P·B·凯D·S·古那瓦德那L·马索利亚
Owner MICROSOFT CORP