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Method for transporting variable length and fixed length packets in a standard digital transmission frame
Method for transporting variable length and fixed length packets in a standard digital transmission frame
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机译:在标准数字传输帧中传输可变长度和固定长度分组的方法
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摘要
A method is provided for transporting variable length packets such as IP packets and fixed length packets of length N, such as MPEG video packets, in standard digital transmission frames such as DS-3 frames. Each frame comprises a plurality P of sections having a fixed length M which is greater than N. A fixed length trailer is added to each of the variable length packets. Each variable length packet with the added trailer is segmented into an integer number of segmented packets of length N. Padding bits are added if necessary to provide the integer number of segmented packets. A header and trailer are added to each of the segmented packets and fixed length packets to expand them into an expanded packet length M. P of the expanded packets are combined into a frame for transmission.
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