Method and Device for Selecting Aggregation Node

A device for selecting an aggregation node, comprising:

• an acquisition unit, configured to acquire a trust value list for each of nodes in a cluster, wherein the trust value list for each of the nodes comprises trust values for each of the nodes, acquired by remaining nodes in the cluster;
• a first calculator, configured to calculate an actual trust value for each of the nodes according to the trust value list for each of the nodes, by using a first predetermined algorithm;
• a second calculator, configured to calculate an actual remaining energy ratio of each of the nodes according to a self-calculated remaining energy ratio of each of the nodes calculated by itself and other-calculated remaining energy ratios of each of the nodes calculated by the remaining nodes in the cluster, by using a second predetermined algorithm;
• a third calculator, configured to calculate an energy-trust integrated value for each of the nodes according to the actual trust value for each of the nodes and the actual remaining energy ratio of each of the nodes, by using a third predetermined algorithm;
• and
• a selector, configured to select an aggregation node according to the energy-trust integrated value for each of the nodes.