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Method and arrangement for adapting transmission of encoded media

A coded and media technology, applied in the field of coded media transmission, can solve the problem of non-existence of signaling, and achieve the effect of improving performance

Active Publication Date: 2012-10-10
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A VoIP application implemented in a cell phone may know the type of access, but if the VoIP application is implemented in a PC (laptop) and the PC uses the cell phone as a modem, this information is exchanged between the VoIP application and the cell phone Required signaling may not exist

Method used

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  • Method and arrangement for adapting transmission of encoded media
  • Method and arrangement for adapting transmission of encoded media
  • Method and arrangement for adapting transmission of encoded media

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Embodiment Construction

[0048] The main focus of existing media conditioning solutions is bitrate reduction, specifically downscaling, ie adapting to worse conditions by reducing bitrate. Since for IP transmission reducing the bit rate does not automatically mean using more channel coding (=error protection), existing solutions do not necessarily increase error resistance / error recoverability when required.

[0049] Furthermore, there is no mechanism in the prior art to allow upward adjustments and ensure that media quality does not degrade when upward adjustments are attempted.

[0050]The basic idea of ​​the invention is to select for the transmission of coded media an adaptation scheme which results in a satisfactory performance of the coded media being transmitted. The difference from the prior art is that each adjustment scheme defines a set of different transport formats, where each transport format is a combination of at least two parameters: the source codec bit rate; the packet rate, which i...

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PUM

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Abstract

The present invention is to select an adaptation scheme for the transmission of the encoded media that results in a satisfactory performance of the transmitted encoded media. A difference from the prior art is that each adaptation scheme defines a set of different transmission formats, wherein each transmission formats is a combination of at least two of the parameters the source codec bit rate, the packet rate, the number of frames of each packet (referred to as frame aggregation), and the level of redundancy. By using the different transmission formats, the transmission can be adapted to different operating scenarios and the performance is hence improved.

Description

technical field [0001] The present invention relates to methods and devices for the transmission of encoded media, and in particular to solutions for adapting the transmission to different operating conditions. Background technique [0002] In Internet Protocol (IP) systems, especially in wireless IP systems such as High Speed ​​Packet Access (HSPA) (ie, Enhanced Uplink and High Speed ​​Data Packet Access), services must work under various operating conditions. Operating conditions depend on several factors: [0003] The access type used, such as HSPA, Dedicated Channel (DCH) bearer, Enhanced Data Rate for GSM Evolution (EDGE), etc. [0004] The channel condition of the current user, ie, whether the user has a good or poor channel condition. [0005] Current cell load in the system. [0006] Traffic mix, ie whether all users are using voice over IP (VoIP), for example, or whether there is a mix of VoIP users, video telephony users and users surfing the Internet or transfe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00
CPCH04L1/0016H04L1/0003H04L1/0015H04L1/0009H04L1/0014H04L1/00H04W28/04H04W28/18
Inventor I·约翰逊T·弗兰基拉J·斯维德伯格
Owner TELEFON AB LM ERICSSON (PUBL)
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