layer, transmission meaning in Chinese

传输层

In accord with common software architecture , modular and hiberarchy were emphasized in the process of design . following the rule , we partitioned the player into three layers based on basic function . they were upper management layer , transmission & control layer and media engine . and then we went further into the detail of every layer and gave some sourcecodes in c language . in the process of implement , some issues such as av buffer management , av rtp timestamp overflow , conjestion elimiation and av synchronize were discussed . efficency and speed must be took into account in embedded system . so we listed series of optimization strategy used to improve the efficency of hardware and the c code . at the end , we tested the player and made some analysis accroding to the test results
为了取得较高的运行效率,本文给出了从硬件到c程序等几个层次的优化方案,均取得良好效果。最后,本文给出了播放器的播放测试结果及分析。测试证明本设计成功实现了设计目标,播放器内部状态管理有序,可以正确响应用户操作,完成预定义的会话交互;能够对mpeg - 4sp / asp编码格式, 4mbps以下码流进行实时解码;播放器可以处理内部异常,网络异常,服务器异常,具有了一定的容错性。