Research On Multipath Cooperative Transmission Technology In Heterogeneous Wireless Networks

With the rapid development of Internet technology,people hope that there will be more and more objects connected through the Internet to reach farther "area" and to make the boundary much wider.In this case,people has proposed the concept " the Internet of Everything".However,all of these are based on the network infrastructure support,and the concept "5G"proposed by the academic and industry communities can solve these problems."5G" is a new evolution of the whole wireless communication system.In "5G",we can realize networks connected and improve the overall bandwidth of the multi-mode terminal with the integration of heterogeneous wireless network.In this thesis,introductions of several schemes for multi path cooperative transmission is given,including application layer,transport layer,and network layer schemes and so on.About the network layer,a detailed analysis is made on the realization of multi-channel cooperation through the establishment of virtual network card sub layer.Besides,we mainly introduce the schemes of two kinds of multipath cooperative transmission technology:CMT-SCTP and MPTCP.Moreover,with my analysis,it turns out that MPTCP is more compatible and the MPTCP technology is established for the author's choice.In this thesis,the detailed introduction of all the related wireless communication to the 5G communication system has been carried on.And at the end of the chapter,the scheme of multi path cooperative transmission system is presented.A set of experimental system is introduced in this thesis,which is designed and implemented by MPTCP technology.The process,method and technical details of the system are introduced,and the effect of single path tansmission and two-way cooperative transmission are given in detail.It has proved that MPTCP has high performance in realizing multi path cooperative transmission and increasing the overall bandwidth.Finally,the thesis gives a unified review of the work done in this thesis and summarizes the author's whole research work,and makes a prospect for the study in future.