DTN中基于RLNC的高效数据传输

摘要

建立了一个有效的理论模型来分析延迟容忍网络(DTN)中基于随机线性网络编码(RLNC)的Epidemic路由传输协议下的数据传输性能。该模型较准确地描述了传输带宽有限的DTN中的数据传输过程，反映了采用RLNC后的数据传输特点和性能优势，为分析DTN中基于RLNC的数据传输性能提供了有效的理论工具。通过与传统Epidemic协议数据传输性能的比较，证明了RLNC能有效地提高DTN中的数据传输性能。该模型为设计DTN中具有良好传输性能的基于RLNC的路由传输协议提供了理论依据。%In this paper, a theoretical model is developed to evaluate the data transmission performance of RLNC-based Epidemic routing in DTNs. This model can trace the data transmission process under transmission bandwidth limitation and provides an insight about the characters of RLNC-based data transmission in DTNs. The data transmission delay of RLNC-based routing protocol is compared with that of conventional routing protocol. The results demonstrate the significant performance improvement for data transmission in DTNs brought by RLNC. The proposed model provides a general tool for performance evaluation and useful guidelines for designing RLNC based routing protocols in DTNs.