Daowen Hua

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The existing opportunistic protocols of Delay Tolerant Network (DTN) occupy much storage and the prediction-based protocols need to calculate and spread much predication information and the scheduling protocols can’ t accommodate to huge complex network. This paper analyses and summarizes the existing DTN protocols and proposes a new DTN routing(More)
The traditional congestion control mechanisms are established upon the assumption that there is a contemporaneous end-to-end path in the network and these methods can't be used in DTN. This paper has proposed a new congestion avoidance mechanism based on path avoidance for DTN. This mechanism optimizes the management of node storage and divides the node(More)
The resource of DTN (Delay Tolerant Network) is constrained and its links are unstable, so the states of network can't be fed back in time to the source node of data. The rate control mechanism and window mechanism of congestion control can't solve the congestion problem of DTN. The paper has proposed A DTN Congestion Control Mechanism Based on Distributed(More)
Based on the deep analysis and research of DTN opportunistic forwarding mechanism, this paper has proposed a new data forwarding mechanism according to the characteristics of intermittent links of DTN. This mechanism has divided the data links of DTN into four categories: precise, approximate, vague and random. Based on the characteristics of the four kinds(More)
The space network has long delay, low useable width, limited computation ability and so on, however, the group correspondence among nodes can save the transmission band width and reduce the network load effectively, therefore the group correspondence becomes extremely important in the space network application. But the SCPS-SP protocol that CCSDS issued can(More)
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