首页|Data delivery delay and cross-layer packet size analysis for reliable transmission of Licklider transmission protocol in space networks
Data delivery delay and cross-layer packet size analysis for reliable transmission of Licklider transmission protocol in space networks
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Delay/disruption tolerant networking(DTN)is proposed as a networking architecture to over-come challenging space communication characteristics for reliable data transmission service in presence of long propagation delays and/or lengthy link disruptions.Bundle protocol(BP)and Licklider Transmission Protocol(LTP)are the main key technologies for DTN.LTP red transmission offers a reliable transmission mechanism for space networks.One of the key metrics used to measure the performance of LTP in space applications is the end-to-end data delivery delay,which is influenced by factors such as the quality of spatial channels and the size of cross-layer packets.In this paper,an end-to-end reliable data delivery delay model of LTP red transmission is proposed using a roulette wheel algorithm,and the roulette wheel algorithm is more in line with the typical random characteristics in space networks.The proposed models are validated through real data transmission experiments on a semi-physical testing platform.Furthermore,the impact of cross-layer packet size on the performance of LTP reliable transmission is analyzed,with a focus on bundle size,block size,and segment size.The analysis and study results presented in this paper offer valuable contributions towards enhancing the reliability of LTP transmission in space communication scenarios.
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