A relationship model of FGS video rate-distortion and average packet loss ratio was established, the optimal FEC data allocation algorithm was designed.

FGS视频率失真和平均丢包率的关系模型，最优FEC数据分配算法的设计。

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The result shows that, the proposed mechanism reduces the handoff delay and the packet loss ratio both in micro-mobility and macro-mobility environments.

结果显示，无论在微移动或宏移动环境中，该机制都可以有效的减少切换时延和分组丢失。

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Analysis of network performance measurement is implemented with researching parameters such as connection, delay, packet loss ratio, bandwidth, flux etc.

该网络性能参数分析通过对连接性、延迟、丢包率、带宽、流量参数等方面的研究实现。

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