Loss differentiation algorithms in heterogeneous networks

The heterogeneous network is a single logical network composed of subnets of different media, different properties. In this network, the packet loss events occur more frequently when the channel changes and the reasons for packet loss are more complex than in a single network environment. Also, the traditional TCP which based on the cable environment design can not meet the requirements of the application. Therefore, the improvement of TCP protocol is becoming a hotspot in the heterogeneous network research. In this paper, based on the study of various TCP protocols, the identification of packet loss as a key issue is analyzed deeply, the general strategy for identifying packet loss is summarized, and then the typical methods of distinguishing the reasons for packet loss are summarized and compared. Finally, the research direction of improving the heterogeneous networks by controlling the packet loss is proposed. A good basis for further study is provided to improve the TCP protocol under a variety of environments.