Load balancing method, load balancing system, load balancing device and topological simplification method

The present invention proposes a load balancing method, a load balancing system, a load balancing device and a topological simplification method. The load balancing method comprising configuring a transmission schedule value for each edge server; grouping the plurality of edge servers into a plurality of server groups, wherein each edge server is grouped into at least a server group belonging to a plurality of server groups; The terminal device receives a download request corresponding to the audio and video stream, wherein the server group in the server group supplies the audio and video stream; and the transmission progress value of the edge server according to the server group, from the edge of the server group The server selects one of the edge servers as the edge server to provide the audio and video data of the audio and video stream to the client device. 本发明提出种负载平衡方法、负载平衡系统、负载平衡装置及拓朴简化方法。此负载平衡方法包括为每边缘服务器配置传输进度值；将多个边缘服务器分组为多个服务器群组，其中每边缘服务器被分组至属于多个服务器群组之中的至少服务器群组；从用户端装置接收对应第影音串流的下载请求，其中服务器群组之中的第服务器群组供应第影