Community-type opportunistic network data forwarding method

A technology of network data and forwarding method, which is applied in the direction of electrical components, wireless communication, service based on location information, etc. It can solve the problems of large transmission delay, no consideration of the nature of node community, and large message load, etc., and achieve the effect of improving efficiency

Active Publication Date: 2018-11-30
NANJING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
  • Application Information

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 algo

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  • Community-type opportunistic network data forwarding method
  • Community-type opportunistic network data forwarding method
  • Community-type opportunistic network data forwarding method

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Embodiment Construction

[0040] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] Such as figure 1 Shown is the inter-community forwarding diagram of the community-type opportunistic network data forwarding method of the present invention. The present invention divides the entire plane into multiple communities according to the geographical location of the building, and can carry out forwarding within the community and between the communities. There is a drop box in each community to handle data packets whose destination node is not in the source node community. The drop box holds the number a of the community, and the node set N of the community a ={n a1 ,n a2 ,...,n al}, node set N aThe node number of the node in the community is saved to query the destination node; the node carries the number information of the...

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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...

Claims

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Application Information

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IPC IPC(8): H04W40/02H04W40/20H04W4/02
CPCH04W4/02H04W4/026H04W40/02H04W40/20
Inventor 刘林峰陈志鸣
Owner NANJING UNIV OF POSTS & TELECOMM
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