这些技术包括多媒体传输的相关协议、多媒体同步、丢包恢复技术和拥塞控制。

These technology include relevant protocols, multimedia synchronization, Packet-Loss Recovery, Congestion Control for multimedia Communication.

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其中，丢包处理技术是用来恢复或隐藏当发生丢包时所造成的损失的相关技术，包括丢包隐藏和丢包恢复；

Packet loss processing techniques, which include packet loss concealment and packet loss recovery, were used to recover and conceal the packet loss.

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对此问题展开讨论，讲述了丢包的原因，对当前普遍采用的几种丢包恢复技术进行了介绍，通过比较提出了自己的观点。

In the thesis, mechanism of packet loss was described, several current recovery techniques for packet loss were discussed and writers viewpoint was proposed.

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