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Multiplexing route method for delay tolerant network

A multicast and delay-tolerant network technology, which is applied in the field of multicast routing, can solve the problems that the hybrid routing method is not suitable for delay-tolerant networks, difficulty in obtaining and maintaining network information, etc., and achieve high message transmission efficiency and copy and distribution speed Fast, high telegram ratio effect

Inactive Publication Date: 2010-06-09
NAT UNIV OF DEFENSE TECH
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  • Claims
  • Application Information

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Problems solved by technology

For networks with strong regularity that widely exist in the real world, such as bus networks and space networks, due to the strong periodicity of connection timing, the timing of the network needs to be predicted in advance. For tolerant networks, accurate network It is difficult to obtain and maintain information, so the hybrid routing method is also not suitable for a tolerant network

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  • Multiplexing route method for delay tolerant network
  • Multiplexing route method for delay tolerant network
  • Multiplexing route method for delay tolerant network

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Embodiment Construction

[0018] Such as figure 1 As shown, the implementation steps of the multicast routing method for a delay-tolerant network of the present invention are as follows: the source node generates a message and spreads it to the surrounding adjacent nodes with the source node as the center, and multiple intermediate nodes in the network A redundant message copy is generated in the node, and each intermediate node holding a redundant message copy transmits the message copy it holds to the destination node, and the destination node notifies other nodes to clear it after receiving the first arrived message copy Redundant message copying in the network.

[0019] Such as figure 2 As shown, in this embodiment, forwarding tokens are used as credentials for node diffusion to generate redundant message copies: nodes holding a message and at least two forwarding tokens are only allowed to forward a message to a node that has never received the message Adjacent nodes spread copies of the messag...

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Abstract

The invention discloses a multiplexing route method for a delay tolerant network, comprising the following steps: a source node generates a message and spreads the message to the peripheral adjacent nodes by taking the source node as a center, a redundancy message copy is generated in a plurality of the middle nodes in the network, and the middle node with the redundancy message copy transmits the message copy to a destination node respectively, and the destination node informs other nodes to clean up the redundancy message copy in the network after receiving the message copy which reaches firstly. The multiplexing route method has the advantages of high reliability of the message transmission, high message transmission efficiency, good destruction resisting capacity, intelligent and high-efficiency method, high message transmission ratio, low average delay, low network overhead ratio and high network resource utilization rate, can meet practical requirements of the delay tolerant network.

Description

technical field [0001] The invention relates to the field of network communication, in particular to a multi-channel transmission routing method for a delay network. Background technique [0002] The development and application of Internet technology has brought great convenience to human life. However, due to the limitations of various factors, in some areas, such as underdeveloped countries and regions, the north and south poles of the earth, and even the outer space of the earth, in some cases, such as earthquakes, tsunamis, fires, terrorist attacks, military confrontations, etc. In the case of network communication, the link is frequently disconnected, the nodes move irregularly, the information transmission delay is large, and the bit error rate is high. The existing Internet technology cannot work well. However, Delay Tolerant Networks (DTN, Delay Tolerant Networks), which originated from interplanetary research, can work well in the environment of high delay in infor...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/22H04L12/56H04L45/24
Inventor 虞万荣吴纯青黄杰彭伟陶静胡晓峰
Owner NAT UNIV OF DEFENSE TECH