公开(公告)号：US20150215159A1

公开(公告)日：2015-07-30

申请号：US14425050

申请日：2013-07-23

Applicant: ZTE Corporation

Inventor： Kai Liao ,  Wei Zhang ,  Bin He

IPC: H04L12/24 ,  H04L29/06 ,  H04L12/26

CPC classification number: H04L41/0668 ,  H04L1/0017 ,  H04L1/205 ,  H04L1/22 ,  H04L5/1438 ,  H04L12/6418 ,  H04L43/0829 ,  H04L43/0847 ,  H04L65/601 ,  H04L65/608 ,  H04L65/80 ,  H04L69/24 ,  H04L69/40 ,  H04N7/148 ,  H04N21/44209 ,  H04N21/4788 ,  H04N21/631

Abstract: Method and device for transmitting media stream are provided to solve the problem of quality reduction in audio and video caused by packet loss, jitter, link breakage in a media stream transmission process in the conventional art. The method includes: a media capability negotiation between a calling terminal and a called terminal is conducted according to a link establishment request message transmitted by the calling terminal and a response message transmitted by the called terminal in response to the link establishment request message, and at least two media channels are established; a media stream is transmitted through a first media channel according to negotiated media capabilities; and when an abnormity is detected to appear in the media stream transmission of the first media channel, another one of the at least two media channels is selected as a second media channel, and the media stream is switched from the first media channel to the second media channel for transmission. By the invention, the quality of audio and video of two communicating parties can be ensured.

Abstract translation: 提供了传输媒体流的方法和设备，以解决传统技术中的媒体流传输过程中由丢包，抖动，链路断裂引起的音视频质量下降的问题。 该方法包括：根据主叫终端发送的链路建立请求消息和被叫终端响应于链路建立请求消息发送的响应消息，进行主叫终端与被叫终端之间的媒体能力协商，并且 建立至少两个媒体渠道; 媒体流根据协商的媒体能力通过第一媒体信道传输; 并且当检测到异常出现在第一媒体信道的媒体流传输中时，至少两个媒体信道中的另一个被选择为第二媒体信道，并且媒体流从第一媒体信道切换到第二媒体信道 媒体频道传输。 通过本发明，可以确保两个通信方的音视频质量。