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Method for forwarding messages on DTN or ICN network in way of self-adoption changeable probability

An adaptive and message technology, applied in the field of network communication, can solve problems such as unsuitable limited resources, node energy consumption, excessive network overhead, etc., and achieve the effect of prolonging network lifetime, reducing node energy consumption, and good energy saving effect

Active Publication Date: 2010-04-14
TIANJIN UNIV
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Problems solved by technology

[0009] 3) Energy consumption of nodes
This method has high delivery rate and minimum delay in the case of unlimited cache, but the network overhead is too large, which is not suitable for the situation of limited resources in reality

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  • Method for forwarding messages on DTN or ICN network in way of self-adoption changeable probability
  • Method for forwarding messages on DTN or ICN network in way of self-adoption changeable probability
  • Method for forwarding messages on DTN or ICN network in way of self-adoption changeable probability

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Embodiment Construction

[0035] In order to achieve the above object, the present invention provides a method for improving the delivery rate of data packets and reducing the energy consumption of nodes in a DTN and ICN network to forward messages with variable probability. In order to make the purpose of the present invention, implementation scheme and advantages clearer, the following The present invention is further described in detail in conjunction with the accompanying drawings.

[0036] see figure 1 , introduces the basic framework principle of the method of the present invention—a method for nodes in a DTN network to forward messages with variable probability. When a node receives a message whose destination is not its own, before storing it in its own cache list, it first counts the number of recently encountered nodes and the number of copies of the message contained in the recently encountered node according to the information of the encountered node, through known The number of nodes enco...

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Abstract

The invention belongs to the field of network communication technology and relates to a method for forwarding messages on DTN or ICN network in a way of self-adoption changeable probability. The method comprises the following steps: defining recent encountering nodes by setting time interval values; recording information of the current encountering nodes by nodes; when messages to be cached is received, counting the number of the current encountering nodes and the copy number of the messages contained in the current encountering nodes by the nodes according to the information of the current encountering nodes; according to the known number of the encountering nodes and the known copy number of the messages, computing and recording the partial copy density of the messages; when the nodes receive request information to the messages, determining the partial copy density to further determine forwarding probability; and forwarding the messages according to the obtained forwarding probability. The invention can effectively reduce the node energy consumption, save node storage space and linkage bandwidth, prolong the life of the whole DNT network and improve the performance of the DNT network.

Description

technical field [0001] The invention belongs to the technical field of network communication, and relates to a method for forwarding messages with adaptive variable probability in a DTN or ICN network, which improves the delivery rate of data packets and reduces energy consumption of nodes. Background technique [0002] DTN or ICN network, also known as delay tolerant network, intermittent connection network, opportunistic network, etc., is a sparse wireless network composed entirely of mobile nodes. In this network, the link between nodes is interrupted intermittently and the interruption lasts for a long time, so that there may be no path between the source node and the destination node at any moment. The emergence of this kind of network is mainly due to various forms of mobility of routers and nodes in the network. In addition, it may also be caused by power management of network nodes or link interruption caused by interference between nodes. DTN network has become a h...

Claims

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Application Information

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IPC IPC(8): H04W28/00
CPCY02B60/50Y02D30/70
Inventor 金志刚赵西满张赛男赵传栋
Owner TIANJIN UNIV
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