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Method and device for controlling uplink power

A technology for power control and transmit power, applied in the field of uplink power control methods and devices, capable of solving problems such as no longer applicable power control schemes

Active Publication Date: 2015-04-15
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, subframe-based power control schemes will no longer be applicable

Method used

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  • Method and device for controlling uplink power
  • Method and device for controlling uplink power
  • Method and device for controlling uplink power

Examples

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Embodiment Construction

[0043] In the embodiment of the present invention, the user equipment performs power control on the target transmission power of the uplink channel / signal transmitted in the current uplink subframe according to the order of the uplink transmission timing advance from large to small, so that after power control, the user equipment in the current uplink subframe The total transmission power at any time in the uplink subframe does not exceed the preset maximum transmission power, which ensures that the system can work normally.

[0044] Preferably, the uplink transmission timing advances of carriers belonging to the same TA group (group) in the same uplink subframe are the same, that is, in the same uplink subframe, the transmission of uplink channels on each carrier in the TA group time alignment.

[0045] see figure 1 , the main method flow of uplink power control in this embodiment is as follows:

[0046] Step 101: the user equipment determines the target transmit power of e...

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Abstract

Disclosed in the present invention is a method for uplink power control, used to execute power control of uplink channels which have different uplink transmission time, thus ensuring the total transmission power of a user equipment in a subframe does not exceed maximum transmission power, so as to ensure the system can work normally. Said method comprises: a user equipment determines the target transmission power of each uplink channel / signal transmitted in the current uplink subframe; according to uplink transmission time advances of uplink carriers of each uplink channel / signal transmitted in the current uplink subframe, in terms of the order from maximum to minimum of said uplink transmission time advances, said user equipment executes power control of the target transmission power of said uplink channel / signal transmitted in the current uplink subframe, so as to after the power control, the total transmission power of said user equipment in the current uplink subframe at any time does not exceed maximum transmission power. Disclosed in the present invention also is a device for implementing said method.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to an uplink power control method and device. Background technique [0002] In an LTE (Long Term Evolution, Long Term Evolution) system, in order to ensure communication quality, one of the main means adopted is uplink power control. Through uplink power control, interference between UEs (User Equipment, user equipment) that use the same resource to send data in adjacent cells can be reduced as much as possible, and transmit power of UEs can be ensured to be used reasonably. [0003] The uplink power that needs to be controlled mainly includes the transmit power of PUCCH (Physical Uplink Control Channel, physical uplink control channel), the transmit power of PUSCH (Physical Uplink Shared Channel, physical uplink shared channel), and SRS (Souding Reference Signal, sounding reference signal) The transmit power of the channel and the transmit power of the PRACH...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/36
CPCH04W52/146
Inventor 高雪娟林亚男沈祖康潘学明
Owner DATANG MOBILE COMM EQUIP CO LTD