Markov mobility model suitable for mobile Ad Hoc network in obstacle environment

A mobile ad hoc network, mobile model technology, applied in network topology, network planning, electrical components, etc.

Inactive Publication Date: 2010-08-04
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A mobile model that restricts node movement, such as the Manhattan mobile model, which has hig

Method used

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  • Markov mobility model suitable for mobile Ad Hoc network in obstacle environment
  • Markov mobility model suitable for mobile Ad Hoc network in obstacle environment
  • Markov mobility model suitable for mobile Ad Hoc network in obstacle environment

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0077] Embodiments of the present invention will be described in detail below in combination with technical solutions and accompanying drawings.

[0078] The movement of nodes under different parameters is given first. Then, for these three network environments: there is no obstacle, the obstacle hinders the movement of the node but does not affect the signal transmission, and the obstacle hinders the movement of the node and affects the signal transmission. A random waypoint model (RWP) and a generic individual Markovian mobility model (GIMM) are selected for comparative analysis with the model proposed by the present invention.

[0079] Four sets of parameters are given below (see Table 1), and the simulation analysis P a Influence on node motion.

[0080] Table 1

[0081] P a

p

q

m

e

P a1

0.4

0.3

0.4

4

P a2

0.4

0.15

0.4

4

P a3

0.05

0.2

0.4

4

P a4...

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PUM

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Abstract

The invention belongs to the technical field of mobile communications, and discloses a Markov mobility model suitable for a mobile Ad Hoc network in obstacle environment. The invention is characterized in that the construction process of the mobility model comprises the following steps: giving out the concept of the obstruction property and transparency of the obstacle, and analyzing two situations that the obstacle obstructs the node movement but does not influence communications, and obstructs the node movement and interrupts signal transmission; expressing the node movement condition by using a discrete-time Markov chain, and obtaining node location information by utilizing state identifications; and finally, giving out two state-transition matrix setting methods. Under different state-transition matrixes, the node has different movement characteristics. The invention can simulate the node movement conditions in a true environment, and is suitable for various obstacle environments.The state-transition matrixes are utilized to describe the node movement conditions, and the movement conditions with different characteristics are obtained by adjusting the parameters in the state-transition matrix.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method for modeling node movement by using a Markov process. Two different methods of building mobile models are given, which can adjust the movement mode of nodes according to different obstacle environments. Background technique [0002] The mobile model tries to simulate the actual situation of the network, and the speed and direction of the mobile node must be able to truly reflect the movement of the node. For this reason, researchers have proposed many different types of mobile ad hoc networks (Ad hoc networks) mobile models. Each mobile model has its own characteristics and application range. The performance of routing protocols is affected by the mobility model. Therefore, we should select existing or design new mobility models that are more in line with the actual environment according to the actual situation of the network, which is conducive to the accur...

Claims

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Application Information

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IPC IPC(8): H04W16/18H04W84/18
Inventor 吴迪佟宁王秀坤
Owner DALIAN UNIV OF TECH
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