Community-type opportunistic network data forwarding method

Abstract

The invention discloses a community-type opportunistic network data forwarding method, wherein a data packet is forwarded in a single copy forwarding method in a source node community; the data packetis sent to a node having the greatest central utility value in a neighbor node by computing the central utility value of the neighbor node; and the process is repeated until the data packet is sent to a target node. When the data packet is forwarded between communities, and as the community where the target node is located is unknown, it is impossible to know exactly which community should be sent to directly, the delivery rate is increased by adopting a multi-copy forwarding manner; the data packet is sent to delivery boxes of other communities and a node set Na of the corresponding community is queried to search for the target node; and then, the data packet is forwarded to the target node. The method of the present invention is directly applied to the community opportunistic network sothat the network transmission speed becomes fast and the message load quantity becomes small.

Description

technical field [0001] The invention belongs to the field of opportunistic network forwarding of delay-tolerant networks, and in particular relates to a community-type opportunistic network data forwarding method. Background technique [0002] With the development of society, computer network technology has been developed very well and has become increasingly mature. In the day-to-day life of human beings, wireless networks are becoming more and more indispensable. However, due to a series of difficult problems such as movement and distance, the wireless network cannot be well utilized. [0003] An opportunistic network is a network that does not require full end-to-end connectivity. Through node movement, data storage, and data forwarding opportunities, messages can be smoothly sent from source nodes to destination nodes. Now the hot issue of opportunistic network research is how to send messages from the source node to the destination node with higher forwarding delivery...

AI Technical Summary

Problems solved by technology

The current multi-copy or single-copy routing algorithms in opportunistic networks do not take into account the community nature of nodes. If these algorithms are directly applied to community-based opportunistic networks, it will cause problems such as large transmission delays and large message loads.

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