Energy-efficiency based message forwarding method for tolerant network

The invention discloses an energy-efficiency based message forwarding method for tolerant network. The method is characterized in that the number of copies of messages which meet the conditions and are of small energy consumption is calculated and selected according to the contact rate of network nodes and the probability of message delivery and other information under the conditions that two cells are developed in the tolerant network and social selfishness is shown, wherein the activeness of the nodes and the optimal number K of the copies of the message delivered from a source node to a target node are calculated, then the number of the copies of the message to be forwarded, of the source node is set to be K+1, namely, the message can be copied into K+1 numbers to the maximum; when any node that carries the message meets another node that does not carry the message, and the number of the copies of the message carried by the node exceeds 1, the copies are distributed according to the activeness of the nodes; otherwise, the message cannot be forwarded until meeting the target node. According to the message forwarding method, the number of the copies of the message is limited so as to lower down the energy consumption in message delivery.