Method for estimating speed class of mobile terminal in multilevel cellular system

A mobile terminal and cellular system technology, applied in the field of level estimation, can solve problems such as misjudgment, neglect, and affect the effectiveness of cell reselection, and achieve the effects of increasing efficiency, improving accuracy, and avoiding mobile robustness problems

Inactive Publication Date: 2010-12-22
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Within the set time interval, when a high-speed mobile terminal that has experienced multiple handovers enters the standby state, since only handover events have occurred before and no cell reselection events have occurred, the handover events have been ignored in statistics, and misjudgments will occur, affecting Validity of cell reselection; and vice versa

Method used

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  • Method for estimating speed class of mobile terminal in multilevel cellular system
  • Method for estimating speed class of mobile terminal in multilevel cellular system
  • Method for estimating speed class of mobile terminal in multilevel cellular system

Examples

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Embodiment 1

[0031] The invention belongs to the field of mobile communication, and is especially suitable for multi-level cellular network environment. The so-called multi-level cellular network refers to a cellular network environment in which various cellular cells including home cells, micro cells, hotspot coverage cells, and macro cells coexist in a certain area. Specifically, the present invention can be widely applied to various wireless communication systems, such as UMTS, LTE, LTE-A, Mobile WiMAX, Mobile WiMAX II and other systems.

[0032] The present invention provides a method for estimating the speed level of a mobile terminal in a multi-level cellular system, including counting handover or cell reselection within a certain interval according to the type of the original cell where handover or cell reselection occurs in a multi-level cellular network environment When selecting the number of events, the cell weight is added to evaluate the speed level of the mobile terminal, whi...

Embodiment 2

[0040] In this embodiment, the method for estimating the speed level of a mobile terminal can be used in any type of cell. In this embodiment, cell weights are accumulated when a cell reselection event occurs in the terminal.

[0041] The speed level estimation method of the mobile terminal in the multi-level cellular system of the present embodiment, the method comprises the following steps:

[0042] The multi-level cellular system includes a variety of cell types. When a mobile terminal enters a cell, it obtains the cell weight; when a cell reselection event occurs in the terminal, and within a set time interval, the cell weight of the original cell is accumulated to N total ; The weight of each cell is proportional to its coverage. When a new interval starts, N total to zero. Thereafter, after each reselection, N total Add the weight of the cell.

[0043] Equal time interval expires, compare N total , the threshold N for the number of reselection times when the termin...

Embodiment 3

[0045] In this embodiment, the method for estimating the speed level of a mobile terminal can be used in any type of cell. In this embodiment, cell weights are accumulated when a handover event occurs in the terminal.

[0046] The speed level estimation method of the mobile terminal in the multi-level cellular system of the present embodiment, the method comprises the following steps:

[0047] The multi-level cellular system includes a variety of cell types. When a mobile terminal enters a cell, it obtains the cell weight; when a handover event occurs at the terminal, and within a set time interval, the cell weight of the original cell is accumulated to N total '. When a new interval starts, N total ' is zero. Afterwards, each time after switching, N total ’ plus the weight of the cell.

[0048] Equal time interval expires, compare N total ′, the threshold N of the number of times the terminal enters the medium-speed level switch HO-M , the threshold N of the number of ...

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Abstract

The invention discloses a method for estimating a speed class of a mobile terminal in a multilevel cellular system, which comprises the following steps of: allowing the multilevel cellular system to comprise multiple cell types, and when the mobile terminal enters a cell, acquiring a cell weight; when the terminal performs cell reselection, and in the set time interval, accumulating the cell weight of the original cell to Ntotal; and when the time interval is up, comparing the Ntotal, a NCR-M and a NCR-H; if the numerical value of the Ntotal is lower than that of the NCR-M, judging the speed of the mobile terminal to be a low speed; if the Ntotal is between the NCR-M and the NCR-H, judging the speed of the mobile terminal to be an intermediate speed; and if the numerical value of the Ntotal is greater than that of the NCR-H, judging the speed of the mobile terminal to be a high speed. When a new interval begins, the Ntotal is cleared. The method is also applied to cell weight accumulation only when the terminal switches and the cell weight accumulation when the terminal switches or the cell is reselected instead of the weight accumulation only when the terminal performs the cell reselection. The cell weight is only added by utilizing the existing information in the system, so that the precision of the conventional method for estimating the speed of the terminal in the system is improved.

Description

technical field [0001] The invention belongs to the technical field of mobile communication, and relates to a method for estimating a speed level of a mobile terminal, in particular to a method for estimating a speed level of a mobile terminal in a multi-level cellular system. Background technique [0002] In the existing cellular communication system, especially for the research scenario of mobile robustness self-optimization [see 3GPP TR 36.902v1.1.0, 2009.04], for the speed level detection of the mobile terminal before the handover or cell reselection process , appears to be particularly important. A mobile terminal with an excessively high speed needs to perform a corresponding handover or cell reselection process in advance, while a mobile terminal with a relatively low speed has more time to stay in the original cell. It can be seen that the embodiment of mobile robustness is that the parameter setting of handover or cell reselection should be adapted to the speed lev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W36/32
Inventor 徐晓张健郑小盈魏珍珍胡宏林
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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