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Prediction method for link stability of Ad Hoc network

A stability prediction and stability technology, applied in wireless communication, electrical components, etc., can solve the problems of frequent disconnection of links and unstable routing.

Inactive Publication Date: 2012-08-15
SHANDONG UNIV
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Problems solved by technology

[0006] The purpose of the present invention is to provide a link stability prediction method in an AdHoc network, to solve the problems of frequently disconnected links and unstable routes caused by node movement in the adhoc network, and improve the performance of the network (such as increasing the delivery of packets) rate, reduce end-to-end delay, etc.) to adapt to high mobility environment

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  • Prediction method for link stability of Ad Hoc network
  • Prediction method for link stability of Ad Hoc network
  • Prediction method for link stability of Ad Hoc network

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Embodiment Construction

[0057] An embodiment of the present invention is given below and the present invention will be further described in conjunction with the accompanying drawings.

[0058] figure 1 , figure 2 middle

[0059] (1) Direct link stability assessment

[0060] According to the Friis free-space propagation model, the received power (P RX ) to the ratio of the transmit power (P TX ) is inversely proportional to the square of the transmission distance (R), namely P RX P TX ∝ 1 R 2 or R ∝ P TX P RX .

[0061] In the present invention, it is assumed that the lower limit of the received power is P min , that is, when the received power is lower than this valu...

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Abstract

The invention discloses a prediction method for link stability of an Ad Hoc network, which includes steps: firstly, assessing direct stability of the link; secondly, assessing indirect stability of the link; thirdly, assessing comprehensive stability of the link; fourthly, taking stability as a foundation for a multicast routing protocol so as to solve the problem that the multicast routing protocol based on the existing link stability serving as a routing standard is unable to adapt to an unstable environment with high mobility, strong interference and the like. The prediction method for link stability of the Ad Hoc network is simple in calculation, low in working capacity during a process of accessing the link stability, stable in holistic performance and strong in adaptability for the network and low in energy consumption and has low requirements for hardware.

Description

technical field [0001] The invention belongs to the field of mobile AdHoc network (MANET), and in particular relates to a link stability prediction method in the AdHoc network for link stability. Background technique [0002] Mobile AdHoc network is a dynamically reconfigurable wireless network, each node acts as a host and a router at the same time. As a host, a node needs to run its own application; as a router, a node is responsible for forwarding data according to a specific routing protocol. AdHoc networks are widely used in disaster relief (such as earthquakes, fires) and distributed collaborative computing. [0003] In practical applications, since a node often needs to send the same data to multiple nodes, multicast routing protocols emerge as the times require. However, due to the characteristics of mobile adhoc network such as random movement of nodes, limited resources, and unreliable channels, traditional multicast protocols cannot be well adapted to MANET netw...

Claims

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Application Information

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IPC IPC(8): H04W24/00H04W40/00
Inventor 贾智平张志勇夏辉
Owner SHANDONG UNIV
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