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Method and apparatus for determining antenna of radio base station in mobile target zone

A technology for radio base stations and moving targets, which is applied in the field of antennas and devices for determining radio base stations in moving target areas, and can solve problems such as complicated control procedures and driving devices.

Inactive Publication Date: 2004-01-21
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, when using such an appropriate array antenna technique, there is a problem that many antennas are required for maximum suppression of interference, and the control program and driving device become complicated

Method used

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  • Method and apparatus for determining antenna of radio base station in mobile target zone
  • Method and apparatus for determining antenna of radio base station in mobile target zone
  • Method and apparatus for determining antenna of radio base station in mobile target zone

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Embodiment Construction

[0017] An embodiment of the antenna determination method and device of the present invention will now be described in detail with reference to FIG. 1 to FIG. 5 .

[0018] (Basic structure of antenna determination device)

[0019] FIG. 1 shows the overall structure of the antenna determination device of this embodiment.

[0020] As shown in FIG. 1 , the antenna determination device includes: radio terminals 10 to 12, radio base stations 20 and 30, which are used to realize radio communication with the radio terminals 10 to 12 in a code division multiple access mode, and a control device 40, which passes The radio terminals 10 and 11 , the radio base stations 20 and 30 , the switch 50 connected to the control device 40 , and the network 1 connected to the switch 50 .

[0021] The radio terminals 10 to 12 are movable portable terminals having communication functions such as cellular phones, PDAs, and the like.

[0022] The control device 40 is connected with the radio base stat...

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PUM

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Abstract

At a time of the handover, the communications with respect to the radio terminal related to the handover are carried out by using the same antenna as the antenna with respect to the other radio terminal that is already located in the moving target area, so that interferences due to the difference in the propagation paths can be suppressed to the minimum, and the receiving quality can be improved.

Description

technical field [0001] The present invention relates to a method and apparatus for determining an antenna of a radio base station, for example, when switching between a mobile radio terminal and a radio base station in radio communication of a code division multiple access method. Background technique [0002] Generally, in a radio apparatus in which a mobile radio terminal moves from a present determined area to another area switching, radio communication such as a code division multiple access method is implemented between the radio terminal and a radio base station, by performing switching to control the moving target area antenna of the radio base station, and then establish synchronization with the radio base station in the mobile target area. [0003] Generally, in antenna switching involving switching, when a radio base station in a moving target area has a plurality of antennas, until synchronization is established, an antenna for transmitting a signal to a mobile ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/711H04B7/02H04B7/08H04B7/26H04J13/00H04W16/28H04W36/06H04W36/08H04W36/38H04W88/08
CPCH04B7/022H04W72/082H04W72/046H04W88/08H04W36/0055H04B7/0805H04W72/541
Inventor 石黑隆之石井启之
Owner NTT DOCOMO INC