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A base station, terminal and power control method thereof

A technology of power control and base station, which is applied in the field of base station, terminal and its power control, which can solve the problems of communication quality degradation, failure of normal communication, interference and other problems of terminals belonging to adjacent base stations, so as to improve the quality of downlink communication and improve the quality of uplink communication Effect

Active Publication Date: 2018-03-27
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] When the base station transmits data signals to the user terminal, because the base station only considers the coverage area of ​​the base station itself and the feedback from the user terminal when determining the transmission power of the data signal, the transmission power of the base station is often relatively large. At this time, the high-power data signal will Strong interference will be generated to terminals belonging to adjacent base stations around the base station, which will cause the communication quality of terminals belonging to adjacent base stations to decline, or even fail to communicate normally

Method used

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  • A base station, terminal and power control method thereof
  • A base station, terminal and power control method thereof
  • A base station, terminal and power control method thereof

Examples

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Embodiment 1

[0044] Please refer to figure 1 , Embodiment 1 of the present application provides a power control method of a base station, which is applied to a base station, and when the base station sends information to a user terminal, it includes:

[0045] S101: Obtain a first transmit power for sending data information to the user terminal;

[0046] S102: Determine, based on the first transmission power, a first data interference intensity to a terminal to which a neighboring base station belongs;

[0047] S103: Determine whether the difference between the first data interference intensity and the interference threshold is greater than zero, and obtain a determination result;

[0048]S104: If the judgment result is greater than zero, reduce the first transmission power to the second transmission power, so that when transmitting data information with the second transmission power, the second data of the terminal to which the adjacent base station belongs is interfered The intensity do...

Embodiment 2

[0109] Please refer to Figure 5, an embodiment of the present application provides a terminal power control method, which is applied to a terminal. When the terminal sends information to a working base station, the method includes:

[0110] S501: Receive access signal strength information sent by the working base station.

[0111] Wherein, the access signal strength R in the access signal strength information AT Contains working base station access signal demodulation threshold SNR AT and its own noise floor NI measured by the working base station BS , specifically R AT = SNR AT +NI BS .

[0112] Generally, when the user terminal needs to send data information to the working base station, it will send a communication request. When the working base station receives the communication request, it will send the access signal strength information of the working base station itself to the user terminal or the user terminal directly monitors the work The base station broadcas...

Embodiment 3

[0136] Please refer to Image 6 , the embodiment of the present application provides a base station, including:

[0137] The first transmitting unit 601 is configured to transmit a first pilot signal to a user terminal;

[0138] The first receiving unit 603 is configured to receive a feedback signal sent by the user terminal in response to the first pilot signal;

[0139] The first processing chip 602 is connected to the first transmitting unit 601 and the first receiving unit 603, first, based on the first pilot signal and the feedback signal, obtains the noise floor and direction of the data information received by the user terminal The first space loss when the user terminal sends information, and then based on the noise floor and the first space loss, determine the first transmission power for sending data information to the user terminal, and then based on the first transmission power Determining the first data interference strength to the terminal to which the adjacent b...

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Abstract

The present invention discloses a base station, a terminal and a power control method thereof, wherein a power control method of a base station, when the base station sends information to a user terminal, the method includes: obtaining the data information sent to the user terminal First transmission power; determine the first data interference intensity to the terminal to which the adjacent base station belongs based on the first transmission power; determine whether the difference between the first data interference intensity and the interference threshold is greater than zero, and obtain a judgment result; if The judgment result is greater than zero, reducing the first transmission power to the second transmission power, so that when the data information is transmitted with the second transmission power, the second data interference intensity to the terminal to which the adjacent base station belongs does not exceed The interference threshold. The technical problem that the data signal transmitted by the base station excessively interferes with other terminals in the prior art is solved.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a base station, a terminal and a power control method thereof. Background technique [0002] With the development of wireless communication, the coverage of wireless signals becomes more and more important. At the same time, due to the continuous increase of the number of base stations (BS) for different operators and different communication purposes, user equipment (UE for short) ) is also increasing in number. [0003] In the prior art, when a base station transmits a data signal to a user terminal, a transmission power value is set according to the coverage area of ​​the base station for signal transmission, and then the data signal transmission power is adjusted through drive test and user terminal feedback. [0004] In the process of realizing the technical solution in the embodiment of the application, the inventor of the application found the following technical prob...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04W88/02H04W88/08
CPCH04W24/10H04W24/02H04W52/244H04L5/005H04W16/28H04W52/243H04W52/245H04W88/02H04W88/08
Inventor 陈侃浩
Owner ZTE CORP
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