Abstract
With the development of the space communication application, it is more and more important for the space Delay Tolerant Networks (DTN) nodes to communicate with each other. In order to provide the reliable data transmission in space DTN network, the article firstly introduce the characteristics of the space DTN network and its protocol stacks, especially the designs and procedures of the Licklider Transmission Protocol (LTP). Then, with the detail analysis of the shortcomings of LTP protocol, we suggest an improvement of LTP protocol in Space DTN network based on Network Coding (NC-LTP), and make efforts in the theoretical works and simulation of such new approach. The theoretical and simulation results show that, compared with the traditional LTP protocol, NC-LTP performs well in the different situations, such as time-delay and packets loss rate, which is suitable to be used in the space DTN network environment with the characteristics of high dynamic, high bit-error rate and band-width limited.
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