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Safety-conscious routing and power distribution method for wireless multi-hop network

A wireless multi-hop network and distribution method technology, which is applied in the field of wireless multi-hop network routing selection and power distribution considering security, can solve problems such as multi-level joint design without consideration, achieve good scalability, simple algorithm, and improve energy effect of effectiveness

Active Publication Date: 2018-06-05
HANGZHOU DIANZI UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some of these algorithms considering physical layer security for multi-hop networks rely on some unrealistic assumptions, such as assuming that the number, location and channel state confidence (CSI) of eavesdroppers are known; some do not consider many joint design between layers

Method used

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  • Safety-conscious routing and power distribution method for wireless multi-hop network
  • Safety-conscious routing and power distribution method for wireless multi-hop network
  • Safety-conscious routing and power distribution method for wireless multi-hop network

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and examples of implementation.

[0022] The present invention assumes that the topology of the entire network is as figure 1 shown. Consider a wireless multi-hop network consisting of N legitimate nodes A with known distances from each other i ∈N,i={1,2,3...N}, M independent eavesdroppers E j ∈M,j={1,2,3...M}, the density of eavesdroppers is λ E . The node positions obey the Poisson distribution. The eavesdropper is in a passive state, and the CSI and eavesdropper location are unknown to legitimate nodes. Each node in the network is equipped with an omnidirectional antenna, the node works in the time division multiplexing mode, and the relay node transmits data by decoding and forwarding.

[0023] When information from node A i transfer to A i+1 , legal node A i+1 and Eavesdropper E j The receiving signal-to-noise ratio of with They are:

[0024]

[002...

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Abstract

The invention discloses a joint routing and power distribution method for a wireless multi-hop network, which integrates the energy efficiency, the transmission reliability and the safety. By considering a relatively realistic scene that both the position and the channel state information of an eavesdropper are unknown, for the wireless multi-hop network in a decoding and forwarding mode, the invention provides a safety routing and power distribution method under end-to-end bit error rate constraint. According to the method disclosed by the invention, a power distribution and routing strategy,which can satisfy the maximum safety connection probability, can be obtained by physical layer safety capacity definition based on an information theory at first; then, modelling is carried out by taking the strategy and the end-to-end bit error rate as the constraint and the total power consumed by a minimum path as a target; and a power distribution algorithm and a safety routing algorithm based on a classical Bellman-Ford algorithm are obtained by deduction. By means of the joint design method, the information transmission safety is ensured; furthermore, the transmission accuracy is realized; simultaneously, energy utility of the network is improved; and thus, the method has a certain practical significance.

Description

technical field [0001] The invention belongs to the technical field of information and communication engineering, and relates to the physical layer security technology in the wireless communication system, the routing selection technology of the network layer in the multi-hop network, and the power distribution technology of the physical layer. A method for joint secure routing and power allocation of networks to improve energy efficiency and transmission reliability in multi-hop network stream transmission. Background technique [0002] With the development of communication technology and the diversified needs of communication services, the security of information transmission in communication networks has also received more and more attention. Traditional information security technology is based on cryptography and is applied above the physical layer, requiring high-performance hardware support and a huge amount of calculation. The physical layer security technology based...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W12/00H04W40/02H04W52/46H04W72/04H04L12/721H04W52/02H04W12/122
CPCH04L45/14H04W12/00H04W40/02H04W52/46H04W72/0473H04W52/0209
Inventor 冯维王凤杨凯通姚英彪许晓荣
Owner HANGZHOU DIANZI UNIV
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