Power control method for wireless communication system

A wireless communication system and power control technology, applied in the direction of transmission control/equalization, can solve the problems of affecting the power control effect, wireless system performance loss, inability to meet the power control step size, etc., to achieve the effect of enhancing the power control effect

Active Publication Date: 2008-07-30
BEIJING ZHIGU TECH SERVICE
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  • Abstract
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AI Technical Summary

Problems solved by technology

Since the power control command only contains information about whether to increase or decrease the transmission power, it cannot carry information on how to adjust the power control step size. Therefore, in traditional wireless communication systems, the system can only be used during regular transmission and discontinuous transmission. The same power control step size cannot meet the requirement that the power control step size can be optimized during the regular transmission period and the discontinuous transmission period, so that the power control performance of the wireless system that supports discontinuous transmission will suffer performance loss during discontinuous transmission, affecting power control effect

Method used

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  • Power control method for wireless communication system

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Embodiment Construction

[0028] The power control method in the wireless communication system of the present invention is used in the UTRA TDD system to perform power control during uplink discontinuous transmission.

[0029] In the UTRA TDD system, the SBGP for uplink discontinuous transmission is indicated to the user equipment by the Radio Resource Control (RRC) entity on the base station side through a signaling message. When the system is performing uplink discontinuous transmission, both the base station and the user equipment know the Discontinuous transmission of SBGP parameters.

[0030] The power control method in the wireless communication system of the present invention utilizes SBGP parameters to optimize the power control step size of the downlink power control during uplink discontinuous transmission, and properly performs conventional power control step size according to the value of SBGP during uplink discontinuous transmission. Improve, to achieve the effect of optimizing each SBGP v...

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Abstract

When up going transmission is discontinuous in wireless communication system, the method obtains adjustment parameters of step size larger than or equal to zero for controlling power based on SBGP parameter. The method takes regular step size for controlling power plus the obtained step size as the new step size for controlling power to control down going power. Without need of special signaling to support in communication process, the method adds step size for controlling power in discontinuous transmission based on SBGP value so as to optimize down going step size for controlling power when up going transmission is discontinuous. Advantages are: optimizing operation based on different SBGP, enhancing effect of power control as well as not influencing power control when system is in state of discontinuous transmission.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a power control method during uplink discontinuous transmission in a wireless communication system. Background technique [0002] Closed-loop power control technology is widely used in UTRA (Universal Telecommunication Radio Access) FDD and UTRA (Universal Telecommunication Radio Access) TDD3.84 / 1.28Mcps systems. In the closed-loop power control mechanism, user equipment / base station The power control command carried by the channel periodically adjusts the transmit power. [0003] Taking downlink power control as an example, after receiving a signal from the base station, the user equipment decides whether to increase or decrease the transmit power of the base station signal, and generates a power control command. The user equipment transmits the power control command to the base station through the uplink feedback channel, and the base station adjusts t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
Inventor 马毅华
Owner BEIJING ZHIGU TECH SERVICE
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