Power control method and device for channels

A technology of power control and channel, applied in the direction of transmission control/equalization, power management, wireless communication, etc., to reduce the requirements and improve the effect of power control

Active Publication Date: 2013-08-14
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem solved by the present invention is to provide a channel power control method and equipment to solve the problems caused by power control for a single type of physical channel

Method used

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  • Power control method and device for channels
  • Power control method and device for channels

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0092] In the implementation, the transmission time slots of each downlink physical channel and corresponding uplink physical channel are shown in the above table, assuming that the uplink accompanying DPCH of subframe n+i1 carries the PC command word response of the downlink accompanying DPCH of subframe n, subframe n+i1 The E-PUCH of i3 carries the PC command word response of the E-AGCH of subframe n+i2; the reference transmission power of subframe n is refer_p_tx(n), and the update time of refer_p_tx is subframe n.

[0093] The transmit power of subframe n downlink accompanying DPCH is refer_p_tx(n) plus the power offset of DPCH;

[0094] Subframe n+i2 first updates refer_p_tx according to the PC on the DPCH of n+i1 subframe, and the update time of refer_p_tx is subframe n+i1:

[0095] refer_p_tx(n+i1)=refer_p_tx(n)+DPCH_PC(n+i1)

[0096] Then the transmission power of the E-AGCH is refer_p_tx(n+i1) plus the power offset of the E-AGCH.

example 2

[0099] In the implementation, the transmission time slots of each downlink physical channel and corresponding uplink physical channel are shown in the above table, assuming that the uplink accompanying DPCH of subframe n+i3 carries the PC command word response of the downlink accompanying DPCH of subframe n, subframe n+i3 The E-PUCH of i2 carries the PC command word response of the E-AGCH of subframe n+i1; the unified transmission power of subframe n is refer_p_tx(n), and the update time of refer_p_tx is subframe n.

[0100] When the E-AGCH is sent in the n+i1 subframe, it is judged according to the rules that refer_p_tx does not need to be updated, and the transmission power of the E-AGCH is refer_p_tx(n) plus the power offset of the E-AGCH.

[0101] Before sending data in subframe n+i4, it is judged according to the rules that the PC using E-PUCH in subframe n+i2 updates refer_p_tx, and the update time of refer_p_tx is subframe n+i4:

[0102] refer_p_tx(n+i4)=refer_p_...

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PUM

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Abstract

The invention discloses a power control method and device for channels. The method comprises the following steps: setting uniform reference sending power for multiple channels on the same terminal; and sending data on various channels according to the uniform reference sending power. According to the invention, the power control effect of each physical channel when the sending data is not continuously sent can be obviously improved, and at the same time, the requirement of power control on data sending intervals can be reduced.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a channel power control method and equipment. Background technique [0002] The role of power control is mainly manifested in several aspects such as reducing the influence of near-far effect, anti-fading, and improving system capacity. The power control in the CDMA (Code Division Multiple Access, Code Division Multiple Access) system can overcome the path loss and shadow fading on the one hand, and also has a certain compensation effect on the fast fading caused by the multipath effect on the other hand. For example, in a TD-SCDMA (Time Division Synchronous CDMA, Time Division Synchronous-Code Division Multiple Access) system, a combination of open-loop power control and closed-loop power control is generally used for power control. [0003] The current downlink power control generally adopts a power control method combining inner loop and outer loop, that is, closed-loop powe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04B7/005
Inventor 罗斐琼郭保娟
Owner DATANG MOBILE COMM EQUIP CO LTD
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