Adaptive rate control in a communications system

A rate and control unit technology, applied in transmission systems, wireless communications, digital transmission systems, etc., can solve the problems of not being able to see the business as working, affecting the transmission delay, etc., to eliminate the needs or requirements of user tracking and service reminders. Effect

Active Publication Date: 2010-06-16
TELEFON AB LM ERICSSON (PUBL)
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, controlling the transmission bit rate of the application will affect the transmission delay
Although less delay-sensitive services will still work (albeit at a lower speed) at a reduced transmit bit-rate, the result for delay-sensitive services is that if the transmit bit-rate is reduced too much , the business cannot be considered as working

Method used

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  • Adaptive rate control in a communications system
  • Adaptive rate control in a communications system
  • Adaptive rate control in a communications system

Examples

Experimental program
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Embodiment approach

[0066] 1. First embodiment: the receiver 700 estimates a bit rate modification based on the current received bit rate 740 and the effective session bit rate range 720 , and transmits a rate modification request 480 that may include the estimated bit rate modification to the sender 800 . The sender determines a new modified bit rate for transmission to the receiver. For the case where the estimated bit rate modification is included in the rate modification request from the receiver, the sender can choose whether to employ the bit rate modification requested by the receiver.

[0067] 2. Second embodiment: the receiver 700 estimates the bit rate modification based on at least the current received bit rate 740 and the effective session bit rate range 720, and determines the bit rate modification to be performed. The receiver can be further extended to consider various information types or parameters when determining the bitrate modification to make. The receiver transmits to the ...

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Abstract

The invention relates to a method for controlling a bit-rate of a session in a packet-switched communications system where multiple sessions are set-up via a shared resource. A current bit-rate of the session is compared to a bit-rate range valid for the session to determine a distance from the position of the current bit-rate to one of the end-points of the bit-rate range. The current bit-rate is then adapted differently depending on the distance to the selected end-point. By controlling the bit-rate of each session that is set-up via the shared resource for applications that provide delay-sensitive services to users in this way the method and corresponding system and sender- receiver arrangements have the effect that rate adaptations can be distributed among the applications so that users share responsibility for rate adaptations.

Description

technical field [0001] The present invention relates to methods and apparatus for rate control in digital communication systems. Background technique [0002] In a digital packet-switched communication system, different types of traffic (eg, voice, data, audio, and video) can be communicated between multiple parties via shared resources (eg, routers or transmission channels). Some traffic (such as many audio and video applications) typically occurs in real time, while other traffic (such as many data applications) is typically non-real time traffic. [0003] In such systems, a sender is an application or entity that encodes media received from a sender and transmits the media to a receiver. A sink is an application or entity that receives media, decodes the media, and provides the media to a recipient. An application acting as a sender or a receiver or both may reside in the client or on the server, eg, in user equipment or other hardware on the transmitting or receiving s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L47/22H04L47/267
CPCH04L47/14H04L47/25Y02B60/31H04L47/263H04L47/10H04L47/29H04L47/22H04W8/04Y02D30/50
Inventor 斯特凡·瓦斯泰特凡尼尔·恩斯特罗姆杰伊斯莱恩·佩尔蒂埃
Owner TELEFON AB LM ERICSSON (PUBL)
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