Method, device and system for providing and selecting candidate nodes for live streaming services

摘要

Candidate nodes for live streaming services are provided and selected. A candidate nodes list for live streaming services is provided. The method includes 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. The candidate node for live streaming services may also be selected by: 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 overlay policies of the live streaming services.

主权项

1. A method of providing a candidate nodes list for live streaming services, the method comprising the following steps:
collecting information including load information of each node involved in the live streaming services, wherein the load information includes load levels regarding resources of the node; calculating progress factors of each node based on the information collected in the collecting step, wherein the progress factors include download progress and supply progress; comparing the collected load information of each node with load thresholds; sorting, the nodes determined in the comparing step to have collected load information which lies below the load thresholds, based on the progress factors calculated in the calculating step; forming the candidate nodes list by a number N of first nodes of the nodes sorted in the sorting step; and providing the candidate nodes list to a node requesting the candidate nodes list, wherein at least one of the nodes in the candidate nodes list is suitable for providing the live streaming services; wherein the load thresholds are preconfigured by Operation Administration and Maintenance (OAM) based upon overlay of the live streaming services.