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A method and system for uplink power control

A technology of power control and power headroom, applied in power management, adjustment of transmission rate, error detection/prevention using signal quality detector, etc., can solve problems such as factors that increase UE transmit power

Inactive Publication Date: 2011-12-07
ZTE CORP
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  • Abstract
  • Description
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Problems solved by technology

Correspondingly, the factors affecting UE transmit power are increased

Method used

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  • A method and system for uplink power control
  • A method and system for uplink power control
  • A method and system for uplink power control

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Embodiment Construction

[0035] The core idea of ​​this method is to use the deltaMCS enabling parameters to divide the terminal transmit power into two parts: the transmit power required by the reference service and the power headroom, and use the power control word to realize the adjustment of the transmit power required by the reference service when the channel changes. Amount to achieve AMC.

[0036] Based on the above ideas, the present invention provides a method for realizing uplink power control, specifically adopting the following technical solutions:

[0037] The base station configures target receiving power parameters corresponding to the reference service rate, path loss compensation factor parameters, and deltaMCS enabling parameters for the UE and sends them to the UE, and subtracts the target receiving power and path loss compensation from the limit value of the UE transmit power to obtain the power margin. The MCS level available to the UE is determined according to the obtained power...

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Abstract

The invention discloses an uplink power control method and an uplink power control system. The method comprises that: a base station configures a target received power parameter and a path loss compensation factor parameter corresponding to a reference service rate, regulates a power transmission enabling parameter (deltaMCS) according to the grade of a modulation and coding scheme (MCS) and transmits the deltaMCS to a terminal; and the base station subtracts target received power and path loss compensation from a transmitted power limit of the terminal to obtain power allowance, determines an available MCS grade of the terminal according to the power allowance and transmits the determined available MCS grade to the terminal. In the method and the system, the base station is supported to adaptively select an MCS grade suitable for user equipment (UE), and effective control over the uplink transmitted power of the UE is realized.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to an uplink power control method and system. Background technique [0002] Power control is one of the key technologies for resource allocation and interference management in communication systems. In a mobile communication system, uplink power control is also called reverse link power control. An effective uplink power control method can reduce the transmit power of user terminals and reduce the , the interference between terminal equipment), prolong the standby time of the terminal, and increase the capacity of the communication system. [0003] Most of the existing uplink power control technologies are based on the early uplink power control method of the TD-SCDMA (Time Division Synchronous Code Division Multiple Access) system. The base station sends a The expected receiving power corresponding to the transmission rate of the service type, while maintaining a t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/12H04W52/14
CPCH04W52/146H04W52/262H04W52/242Y02B60/50H04L1/0003H04W52/12H04W52/241H04L1/0009H04L1/20
Inventor 路陈红
Owner ZTE CORP
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