METHOD, DEVICE AND SYSTEM FOR PROVIDING AND SELECTING CANDIDATE NODES FOR LIVE STREAMING SERVICES

摘要

This invention relates to a method, device and system for providing and selecting candidate nodes for live streaming services. According to one aspect of the invention, the method for providing a candidate nodes list for live streaming services, which comprises: collecting information of each node involved in the live streaming services; based on the collected information, calculating progress factors of each node; comparing the collected information of each node with load thresholds; sorting the nodes, the collected information of which are below the load thresholds, on the basis of the calculated progress factors; and forming the candidate nodes list by a number N of first N nodes of the sorted nodes. According to the other aspect of the invention, the method for selecting a candidate node for live streaming services comprises: based on information involved in the live streaming services, calculating progress factors; reporting the calculated progress factors and requesting for candidate nodes list; selecting a candidate node from the candidate nodes list according to delay requirements and policies for overlay of the live streaming services.