Multimedia data transmission method based on networking coding in wireless relay network
A wireless relay network and multimedia data technology, applied in the field of multimedia data transmission based on network coding, can solve problems such as large transmission delays, achieve the effect of overcoming delays and improving network throughput
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[0030] The present invention will be further described below in conjunction with the drawings.
[0031] The invention can be divided into four parts: (A) data definition (B) adaptive network coding (C) parameter analysis (D) throughput calculation;
[0032] (A) Definition of data;
[0033] The classic scalable video coding SVC is a key technology to ensure multimedia data transmission. SVC is a kind of hierarchical data. Based on this, we explain the transmission data as follows: We assume that there are L data packets at the source end a 1 ,a 2 ,...,a L Need to be sent to the user, their priority order is decreasing, the order is: a 1 ≥a 2 ...≥a L , This is a hierarchical data, the L data packets are divided into L layers, and each data packet is a layer. The first layer is packet a 1 , Is also the most important data packet. If this data packet is lost at the receiving end, all subsequent data packets cannot be decoded; the same applies to data packet a 2 In the case of loss, subs...
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