A Heartbeat Model for Communication and Control between Network Nodes

On the basis of designing the states of network nodes,improving the heartbeat mechanism and defining the protocol of heartbeat packets,a heartbeat model is designed.With this model,heartbeat packets are transmitted between the network nodes and the network connection states are estimated,so the service and communication availability and reliability of the network nodes are improved with some corresponding measures.At the same time,network burden of the server can be reduced when the server connects multi-clients.Results of performance analysis and simulation test show that the model has a better result and can effectively enhance the communication availability and reliability at the network nodes.