Improved directed diffusion routing protocol based on network coding
A technology of directed diffusion and routing protocol, applied in the field of network communication, it can solve the problems of increasing energy consumption, increasing network delay, node energy exhaustion, etc., to achieve the effect of improving network throughput, reducing the number of transmissions, and balancing network energy consumption.
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[0034] In order to describe the improved directed diffusion routing protocol based on network coding proposed by the present invention in more detail, with reference to the drawings, the description is as follows:
[0035] The theoretical basis of the improved directed diffusion routing protocol NC_IDD based on network coding proposed by the present invention is as follows:
[0036] A. Random linear network coding, as a distributed network coding method, can decode the original information without knowing the topology of the entire network.
[0037] Suppose node S has h original data packets denoted as d 1 ,d 2 ,...,D h , The encoded k, k≥h new data packets, denoted as f 1 ,f 2 ,...,F k . The calculation formula of the new data packet is:
[0038] f j = X i = 1 h g j , i d i j=1,2,…,k
[0039] Where the encoding vector [g j,1 ,g j,2 ,...,G j, h ] Is the local coding vector used by the j-th data packet, each component of which is from the fin...
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