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Mobile Communication System, Base Station, And Cell Coverage Control Method

A mobile communication system and cell coverage technology, which is applied in the field of cell coverage control of base stations, and can solve problems such as the inability to obtain cell coverage later.

Inactive Publication Date: 2012-12-05
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the system application is started after setting the predetermined parameters above, due to changes in system application conditions or changes in the wireless environment (such as changes in path loss due to new buildings), it may not be possible to obtain the original data later. Predetermined Cell Coverage

Method used

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  • Mobile Communication System, Base Station, And Cell Coverage Control Method
  • Mobile Communication System, Base Station, And Cell Coverage Control Method
  • Mobile Communication System, Base Station, And Cell Coverage Control Method

Examples

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Embodiment Construction

[0038] Multiple implementations of the mobile communication system and the cell coverage control method are described below. The mobile communication system according to each embodiment is a cellular system, and includes a base station assigned to each cell, and a mobile station receiving a radio communication service through the base station. In the following description and drawings, for convenience of display and understanding, a cell coverage area, which is an index of a service area of ​​wireless communication provided by a base station to a mobile station, is marked with a circle or a rectangle. However, those of ordinary skill in the art who have read this specification should correctly understand that the cell coverage control method of this embodiment can be applied to the cell coverage of any area that is conceived.

[0039] In the following description, a base station is abbreviated as eNB (evolved Node B), and a mobile station is abbreviated as UE (User Equipment)....

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Abstract

Provided are a mobile communication system, a base station and a cell coverage control method whereby the mobile communication system can be operated such that the cell coverage is set to approximately a target value in a timely manner without any human efforts. In this mobile communication system, a mobile station reports, to the base station, positional information of the mobile station and a reception power value of a reference signal received from the base station. Based on the positional information and reception power value from the mobile station, the base station acquires a measured cell coverage, which is a result of cell coverage measurement, and further controls at least one of a plurality of parameters, which include the power of transmission to the mobile station and the antenna tilt angle, such that the error between the measured cell coverage and a target cell coverage is reduced.

Description

technical field [0001] The invention relates to the technique of controlling the cell coverage of a base station in a mobile communication system. Background technique [0002] In the past, in the mobile communication system, the communication operator who provided the service determined in advance the coverage area of ​​the cell, that is, the service area of ​​each wireless base station (hereinafter referred to as "base station") for the mobile station, and set parameters for the base station so that the cell can be obtained. coverage. The parameters are, for example, transmission power, antenna height, pointing direction, tilt angle, etc. for each cell of the base station. When the system application is started after setting the predetermined parameters above, due to changes in system application conditions or changes in the wireless environment (such as changes in path loss due to new buildings), it may not be possible to obtain the original data later. Predetermined ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W16/28H04W16/18
CPCH04W52/40H04W36/0088H04W52/283H04W16/28H04W52/245H04W24/08H04W52/247H04W24/02H04W16/18H04W88/08
Inventor 小池一司中原徹小川浩二
Owner FUJITSU LTD
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