Research On Dual-interface Transmission Scheme Based On Network Coding

For the development of high-density equipment,high reliability and low-latency networks,network coding,and dual-interface transmission provide a potential solution.Therefore,this paper considers the dual-interface wireless network,using network coding to improve network data throughput,reduce data delay,and provide theoretical technical support for the development of wireless network technology.This paper proposes a random linear network coding(RLNC)method based on dual-interface networks.For dual-interface wireless networks,consider using random linear network coding technology to improve network performance.On the other hand,random network coding technology can make full use of the dual-interface link to improve the decoding rate.The closed expressions corresponding to the dual-path decoding probability and the decoding delay and the corresponding analysis are given and compared with the single-path data transmission in many aspects,the research results show that the method proposed in this paper can achieve higher decoding probability and higher resource utilization.This paper proposes an instantly decodable network coding(IDNC)method based on a dual interface network.This article considers that the device uses two wireless interfaces to receive packets from the base station and sends or receives packets from other devices at the same time.The use of IDNC solves the problem of minimum decoding delay,according to the feedback matrix and conflict conditions.Construct all feasible coding opportunities and conflict-free transmission dual-interface IDNC diagrams.Subsequently,by analyzing the potential coding opportunities,the problem of minimum decoding delay is expressed as the problem of independent set selection with the largest weight on the dual-interface IDNC diagram.Finally,in the case of loss of feedback information,a maximum likelihood method is proposed to estimate the condition of the receiving end of the data packet to reduce the decoding delay,so as to meet the real-time requirements of data transmission.