Abstract: To better solve the problem of data collection in 1)丁MSN(delay tolerant mobile sensor network,DTMSN)，this paper proposed a new data delivery scheme-NPD(Node Priority Data Delivery Scheme). NPD calculates the node delivery priority, according to which nodes make decisions when delivering messages. ho optimize the management of information copy,NPl)adopted dynamic message queue and decided on the principle of abandoning messages based on their survival time. Simulation results show that compared with the existing algorithm of D"hMSN data transmission,NPD has a higher delivery ratio in data transmission and smaller delivery delay and it has a relatively longer network lifetime.

Key words: DTMSN, Data collection, Dynamic data delivery, Node priority, Queue management