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Power control method and apparatus, and base station

A power control and power technology, which is applied in power management, wireless communication, electrical components, etc., can solve the problems of long adjustment time and inability to complete the adjustment in one step, and achieve the effect of saving time and omitting the adjustment process

Active Publication Date: 2017-07-11
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main technical problem to be solved by the present invention is to provide an uplink transmission power control strategy, which solves the problem that in the prior art, the open-loop operating point is not in the optimal state, and the uplink transmission in the radio frequency combining system is controlled by using the closed-loop power control strategy. When the power is adjusted, the adjustment time is long, and the technical problem that the adjustment cannot be completed in one step

Method used

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  • Power control method and apparatus, and base station
  • Power control method and apparatus, and base station
  • Power control method and apparatus, and base station

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] In order to make the purpose, technical solution and advantages of the present invention clearer, this embodiment will further describe the power control method provided by the present invention in conjunction with the accompanying drawings. For details, please refer to figure 1 :

[0069] S101. Obtain the number of radio frequency units for cell combination in the service configuration.

[0070] In the non-combined system, one cell corresponds to one remote radio unit, and one remote radio unit is connected to one baseband processing unit. However, the combination technology supports multiple remote radio units under the same baseband processing unit to form a logical cell. That is to say, in the radio frequency combination system, one baseband processing unit actually corresponds to multiple remote radio units. This is done to reduce the number of cells, thereby effectively reducing interference and improving network performance.

[0071] In the radio frequency comb...

Embodiment 2

[0096] This embodiment mainly elaborates the power control device provided by the present invention in detail.

[0097] Such as Figure 4 As shown, in this embodiment, the power control device 40 includes: a radio frequency combination acquisition unit 401 , a combination gain calculation unit 402 , a parameter correction unit 403 and a transmission power determination unit 404 .

[0098] The radio frequency combination obtaining unit 401 is configured to obtain the number of radio frequency units performing radio frequency combination in the service configuration.

[0099] In the non-combined system, one cell corresponds to one remote radio unit, and one remote radio unit is connected to one baseband processing unit. Since the combination technology supports multiple remote radio units under the same baseband processing unit to form a logical cell, that is to say, in the radio frequency combination system, one baseband processing unit actually corresponds to multiple cells a...

Embodiment 3

[0121] This embodiment provides a base station, where the base station includes the power control device in Embodiment 2.

[0122] Since the base station includes the above-mentioned power control device, after determining the uplink transmission power, the base station will send the power information to the user terminal, so that the user terminal can send information to the terminal according to the determined uplink transmission power.

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Abstract

The invention discloses a power control method and apparatus, and a base station. The method includes: obtaining the number of radio frequency units for cell merging in service configuration; calculating a radio frequency merging gain according to the number of the radio frequency units; correcting an uplink transmission power determination parameter according to the radio frequency merging gain; and obtaining a target uplink transmission power according to the corrected power determination parameter. According to the method and apparatus, the radio frequency merging gain is calculated through acquisition of the number of the radio frequency units participating in cell merging, and then the uplink transmission power determination parameter is correspondingly corrected according to the radio frequency merging gain; and thermal noise of a plurality of remote radio frequency merging units during merging are considered during correction of the uplink transmission power determination parameter so that the target uplink transmission power calculated according to the corrected uplink transmission power determination parameter is closer to an expected uplink transmission power, the subsequent complicated adjusting process is omitted, and the time of the power control process is saved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a power control method, device and base station. Background technique [0002] The cell merging technology refers to connecting multiple remote radio units (Radio Remote Units, RRUs) to the same baseband processing unit (Building Base band Unit, BBU) and setting them as the same logical cell. At present, the application of the cell combining technology mainly involves the baseband cell combining system and the radio frequency combining system. [0003] In the RF combination technology, multiple remote RF units participating in cell combination only regard the baseband as one cell, and multiple RF units can only be seen on the operation and maintenance plane. This approach reduces the number of cells and saves Baseband resources, at the same time, also solve the problem of multiple radio frequency units interfering with adjacent areas of the same frequency and effect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/08H04W52/14
CPCH04W52/08H04W52/146H04W52/18
Inventor 梁彩云
Owner ZTE CORP