Heterogeneous network pre-switching method based on mobile prediction

A heterogeneous network, pre-handover technology, applied in electrical components, wireless communication, etc., can solve the problems of threshold deviation, location information estimation, insufficient resource utilization, etc.

Inactive Publication Date: 2012-07-04
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

However, in the traditional pre-handoff algorithm of adaptive threshold value, the location information of the mobile terminal at the next moment needs to be used when setting the threshold value, and the existing algorithm fails to make a reasonable estimate of the location information, and the It is to replace it approximately, which will lead to a certain deviation in the set threshold value, and the problem of insufficient resource utilization still exists

Method used

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  • Heterogeneous network pre-switching method based on mobile prediction
  • Heterogeneous network pre-switching method based on mobile prediction
  • Heterogeneous network pre-switching method based on mobile prediction

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Embodiment

[0053] In the embodiment, it is set that in the heterogeneous converged network of WLAN and WiMAX network, the terminal is at the edge of the WLAN cell, and the process of pre-handover to the WiMAX network is performed in the following steps with t j Indicates the current moment, corresponding to the jth sample point under the discrete time sample, t i As the i-th sample point under the discrete time sample, the value interval is [t j-n , t j ], the lowercase v represents the predicted polynomial or value, and the uppercase V represents the actual polynomial or value. figure 1 It is a flowchart of a heterogeneous network pre-handover method based on mobile prediction, and the method includes:

[0054] 1) The physical delay of the terminal pre-handover is used as the time interval Δt for recording the terminal movement information; according to the built-in GPS of the mobile terminal, its location information is recorded at the time interval Δt, and the location information o...

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Abstract

The invention discloses a heterogeneous network pre-switching method based on mobile prediction, belonging to the technical field of mobile communication. The invention discloses the heterogeneous network pre-switching method based on mobile prediction, which is characterized by determining the coordinates of a mobile terminal at the network switch time through predicating the speed of the mobile terminal, and calculating the pre-switching threshold value, thus the threshold value calculation mode is improved. The heterogeneous network pre-switching method based on mobile prediction provided by the invention has the beneficial effects that the mobile distance of the terminal is predicated through a mobile predication algorithm in the pre-switching process, the pre-switching threshold value is calculated more accurately, thus the packet loss rate of the terminal in the switching process is reduced, and the resource utilization ratio of the current network is improved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, in particular to a method for pre-handover of a heterogeneous network based on mobile prediction. Background technique [0002] With the continuous development of communication technology, heterogeneous wireless networks have received more and more attention. When a user's multi-mode terminal has the function of accessing multiple overlay networks, the handover problem of heterogeneous wireless networks becomes particularly important. In the handover process, not only the horizontal handover between cells of the same network, but also the vertical handover between different networks needs to be considered. As a mobility handover mode for mobile terminals between different types of access networks, vertical handover is the basis for the convergence of multiple networks and has become a key feature and core technology for the development of heterogeneous wireless networks. [0003] T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W36/18H04W36/30
Inventor 唐良瑞蔡明明祁兵孙毅罗轩
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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