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A closed-loop power control method

A closed-loop power control and principled technology, applied in power management, wireless communication, electrical components, etc., can solve the problems of not reflecting the intensity of inter-cell interference and effectively reducing inter-cell interference, so as to achieve the effect of reducing interference

Inactive Publication Date: 2018-03-23
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this closed-loop power control method adjusts the target SINR based on statistical parameters over a period of time, the set target SINR cannot reflect the inter-cell interference intensity at that time, and thus cannot effectively reduce the inter-cell interference

Method used

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  • A closed-loop power control method

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Embodiment Construction

[0012] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0013] The core idea of ​​the present invention is: when performing closed-loop power control, according to the user's current interference intensity to neighboring cells, set a target signal-to-interference-noise ratio for the user to adjust the user's transmission power, effectively reducing the interference between cells.

[0014] figure 1 It is a schematic flow chart of Embodiment 1 of the present invention, such as figure 1 As shown, this embodiment mainly includes:

[0015] Step 101 , when the base station needs to perform closed-loop power control on the user equipment UE, determine the interference adjustment coefficient t of the UE according to the current interference intensity of the UE to neighboring cells and according to pr...

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Abstract

The present application discloses a closed-loop power control method, including: when the base station needs to perform closed-loop power control on the UE, according to the current interference intensity of the UE to neighboring cells, and according to the preset setting principle, determine the interference adjustment coefficient t of the UE; The setting principle is: the t is a non-increasing or non-decreasing function of the interference intensity of the UE to the neighboring cell; the base station determines the target SINRtarget of the UE according to SINRtarget=SINRinit+h(t), Wherein, the SINRinit is a preset initial value of the signal-to-interference-noise ratio, and when the setting principle is: when the t is a non-decreasing function of the interference intensity of the UE to the neighboring cell, the h(t) is based on the t is an independent variable and a decreasing function of t, when the setting principle is: when the t is a non-increasing function of the interference strength of the UE to the neighboring cell, the h(t) is taking the t as the independent variable and is an increasing function of the t; the base station adjusts the uplink transmit power of the UE according to the target SINR, and notifies the UE. The invention can effectively reduce the interference between cells during closed-loop power control.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a closed-loop power control method. Background technique [0002] At present, the uplink behavior of the LTE system is controlled in a distributed manner. When the whole network adopts the same-frequency networking scheme, there will be serious inter-cell interference on the Physical Uplink Shared CHannel (PUSCH), which will affect the uplink throughput. [0003] LTE uplink power control technology is one of the important technologies for controlling inter-cell interference. The existing closed-loop power control technology focuses on the statistics of parameters such as user receiving signal-to-interference and noise ratio (SINR) and block error rate (bler), and adjusts the user's transmit power by adjusting the target SINR according to the statistical characteristics. Since this closed-loop power control method adjusts the target SINR based on statistical parameters within a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/08
Inventor 解芳韦玮
Owner POTEVIO INFORMATION TECH CO LTD