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A Data Forwarding Method for Community-based Opportunistic Networks

A technology of network data and forwarding method, applied in wireless communication, service based on location information, electrical components, etc., can solve problems such as large transmission delay, large message load, and no consideration of the nature of node communities

Active Publication Date: 2021-05-04
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • 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 algorithms are directly applied to community-based opportunistic networks, it will cause problems such as large transmission delays and large message loads.

Method used

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  • A Data Forwarding Method for Community-based Opportunistic Networks
  • A Data Forwarding Method for Community-based Opportunistic Networks
  • A Data Forwarding Method for Community-based Opportunistic Networks

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Embodiment Construction

[0038] 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.

[0039] 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 a The node number of the node in the community is saved to query the destination node; the node carries the number information of th...

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Abstract

The invention discloses a community-type opportunistic network data forwarding method. In the source node community, data packets are forwarded in a single-copy forwarding manner. By calculating the central utility value of the neighbor node, the data packet is sent to the neighbor node in which the central utility value is the largest. node, repeat this process until it is sent to the destination node. When the data packet is forwarded between communities, because the community where the destination node is located is unknown, it is impossible to know exactly which community it should be sent directly to, so the multi-copy forwarding method is used to increase the delivery rate, and the data packet is sent to the drop boxes of other communities , and query the node set N corresponding to the community a to find the destination node, and then forward the data packet to the destination node. The method of the invention is directly applied to the community opportunity network, so that the network transmission speed becomes faster and the message load becomes smaller.

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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Patent Type & Authority Patents(China)
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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