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Method for saving node energy of delay-tolerant network and intermittently-connected network

A technology for connecting networks and delay-tolerant networks, applied in the field of node energy saving, can solve problems such as occupying node cache space and wasting energy, and achieve the effect of promising application prospects, reducing computational complexity, and reducing transmission energy consumption.

Inactive Publication Date: 2009-04-22
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

These "redundant" message copies not only occupy the cache space of the node, but also cause a lot of unnecessary communication and waste a lot of energy

Method used

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  • Method for saving node energy of delay-tolerant network and intermittently-connected network
  • Method for saving node energy of delay-tolerant network and intermittently-connected network
  • Method for saving node energy of delay-tolerant network and intermittently-connected network

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Embodiment Construction

[0027] In order to make the purpose, implementation and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] see figure 1, introduces the basic framework principle of the method of the present invention—application table exchange mechanism to realize energy-saving routing calculation method. After the node receives the message delivery confirmation list of other nodes from the physical layer and the data link layer, it actively maintains the node buffer at the network layer to clear redundant messages to avoid duplication and exchange of expired messages, and at the same time, the message delivery confirmation list saved by the node Update and send to other nodes through probe information and return information. In addition, if the node encounters the destination node and delivers successfully, it will record the delivery into the message delivery confirmation list ...

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Abstract

The invention relates to a method used for saving node energy in a delay tolerant network and an intermittent connection network, belonging to the field of network communication technique. The method comprises the steps as follows: a source node queries a node neighbor list; if no destination node information exists, the message is temporarily memorized in a node buffer; the non-empty nodes in the buffer periodically send exploration information which is used to exchange a message list and a message delivery acknowledgement list; when the node sending the exploration information receives a return information, the buffer is actively maintained according to the message delivery acknowledgement list carried in the return information and a message is sent by the node; after an intermediate node successfully transmits the message to the destination node, the node adds corresponding records into the message delivery acknowledgement list memorized locally and deletes the message from the buffer. The method can effectively reduce the quantity of the redundant nodes, improves the performance of the whole network and prolongs the life period.

Description

technical field [0001] The present invention generally relates to the technical field of network communication, and more specifically relates to a method for saving node energy on a DTN or ICN network. Background technique [0002] DTN or ICN network is a kind of wireless network composed entirely of mobile nodes, with sparse node distribution density and usually no continuous end-to-end connection. The mobile node is both a host and a routing function, responsible for discovering and maintaining paths to other nodes. However, unlike typical Ad Hoc networks, the data transmission in DTN or ICN adopts the asynchronous transmission mode of forward-buffer-forward (Forward-Buffer-Forward), that is, when the routing path is interrupted, the intermediate node will forward the message ( A data packet group composed of multiple data packets) is temporarily stored in the buffer until it is forwarded out when encountering other suitable intermediate nodes or destination nodes. This ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L1/22H04L1/16H04L49/901
Inventor 王欣舒炎泰金志刚
Owner TIANJIN UNIV
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