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Feedback updating mechanism-based trust routing method

A credible and mechanism-based technology, applied in the field of computer networks, can solve problems such as trust update mechanism node trust update, achieve accurate trust evaluation and update, improve security, and accurately judge the effect

Inactive Publication Date: 2011-05-25
HUAZHONG UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The traditional trust update mechanism does not use the feedback mechanism to update the node trust, but compares the actual transmission results with the pre-trust evaluation, so as to update the trust feedback mechanism and simulate the trust relationship in human society to establish a trust model. An Effective Method of Trust Renewal

Method used

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  • Feedback updating mechanism-based trust routing method

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example

[0078] In the following, a typical topology diagram is used to illustrate the trusted routing method proposed by the present invention, and specific steps for feedback trust update are given in a routing example.

[0079] 1. An example of a typical topology

[0080] Such as image 3 As shown in , the figure is a topology diagram of a wireless network, and the dotted line indicates that the nodes are within the communication range of each other. Suppose the source node A needs to transmit data to the destination node I, there are three links from A to I, calculate the length of each link respectively, and sort them from short to long:

[0081] R1: A-B-C-I, the length is 410m;

[0082] R2: A-D-E-F-I, the length is 560m;

[0083] R3: A-G-H-F-I, the length is 580m.

[0084] Assume both the confidence threshold and maturity threshold are 0.5.

[0085] (1) First select R1 as the current path. Obtain the trust table of source node A, as shown in Table 2, and check whether A is ...

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Abstract

The invention discloses a feedback updating mechanism-based trust routing method. The method comprises the following steps of: simulating a trust relationship in the human society; adding a feedback mechanism into a trust model; comparing actual routing and a transmission result with node recommended actions so as to update transmission trust of a transmission node and recommendation trust of a recommendation node; and introducing a discount mechanism for solving the problem of trust updating when actual transmission fails. In the routing method provided by the invention, a feedback mode is added, so that the problem of how to select routing and update trust when an immature trust evaluation node exists in a path is solved, trust is evaluated and updated more comprehensively and accurately, node reliability can be judged more accurately during routing selection or in other application scenes, a most safe and effective routing is selected, network safety is enhanced, and the method has an important practical value in actual communication network routing.

Description

technical field [0001] The invention belongs to the technical field of computer networks, and in particular relates to a trusted routing method based on a feedback update mechanism. Background technique [0002] Ad Hoc network is an open network with no central equipment and self-organization. The self-organization of the Ad Hoc network determines that each node in the network needs to rely on mutual cooperation to realize various network functions. However, this kind of collaboration is very fragile and easily destroyed by factors such as selfish nodes or malicious attacks, thus posing a serious threat to the reliability and security of network transmission. At present, the trusted routing mechanism that introduces the concept of trust into routing is an important security strategy suitable for Ad Hoc networks, and provides a feasible solution for Ad Hoc networks to resist various attacks and ensure reliable operation. [0003] In a network with a trust mechanism, each no...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/721
Inventor 喻莉李静茹熊飞刘祖浩程伟
Owner HUAZHONG UNIV OF SCI & TECH
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