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Base station and mobile communication method

A mobile communication and base station technology, applied in the directions of wireless communication, power management, electrical components, etc., can solve the problems such as deterioration of uplink communication quality and inability to communicate between femto mobile devices and femto base stations

Inactive Publication Date: 2009-12-23
NTT DOCOMO INC
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  • Abstract
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Problems solved by technology

[0006] At this time, there is the following problem: the macro base station is far away from the femto base station, so the macro mobile device uses high power for uplink transmission, and the femto base station adjacent to the macro mobile device is subject to greater interference, and the femto mobile device The quality of uplink communication with femto base stations may deteriorate, or communication may become impossible

Method used

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  • Base station and mobile communication method
  • Base station and mobile communication method
  • Base station and mobile communication method

Examples

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Embodiment Construction

[0031] (Structure of the mobile communication system according to the first embodiment of the present invention)

[0032] refer to Figure 1 to Figure 3 The configuration of the mobile communication system according to the first embodiment of the present invention will be described.

[0033] Hereinafter, a mobile device pre-registered in a femto base station and using the femto base station to communicate is referred to as a "femto mobile device", and a base station providing public communication services is referred to as a "macro base station". A mobile device that does not communicate with a femto base station but is not registered in a femto base station is called a "macro mobile device".

[0034] Basically, the mobile device monitors the downlink perch channel signal transmitted by the base station, waits and communicates with the base station with the strongest received power of the downlink perch channel signal.

[0035] Such as figure 1 as well as figure 2 As show...

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Abstract

The invention provides a base station and a mobile communication method. A macro mobile device adjacent to a femto base station could maintain the communication quality in a femto cell even communicating with the macro base station. The femto base station according to the present invention includes: a downlink perch channel signal transmission power controller unit configured to change a transmission power of a downlink perch channel signal when a first condition is satisfied; and an uplink reception sensitivity controller unit configured to change an uplink reception sensitivity when a second condition is satisfied after the first condition is satisfied.

Description

technical field [0001] The present invention relates to a base station (specifically, a femto base station) and a mobile communication method. Background technique [0002] In recent years, base stations that can be freely installed by users are being developed. Compared with "macro base stations" deployed, designed, and operated by carriers, these base stations are called "femto base stations" because the radius of the cell under their control is smaller. . [0003] Since the femto base station can be installed outside the jurisdiction of the carrier, it is conceivable that the femto base station should be provided with the following cell radius self-regulation function. The radius of the governed cell can be reduced, or conversely can be enlarged to overcome interference from existing macro base stations, or can be enlarged or reduced to cover a desired communication area. [0004] [Patent Document 1] Japanese Unexamined Patent Publication No. 8-289366 Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/26H04W88/08
CPCH04W52/244H04W52/143H04W52/34H04W52/325
Inventor 长户理惠石川义裕
Owner NTT DOCOMO INC
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