Power control method of downlink high-speed shared control channel

A high-speed shared control and power control technology, applied in power management, transmission control/equalization, wireless communication, etc., can solve the problem of inability to dynamically control downlink high-speed shared control channel power, and achieve system transmission capacity optimization and guaranteed solution. Tuning performance requirements, robustness and high reliability

Active Publication Date: 2006-08-30
HUAWEI TECH CO LTD
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Problems solved by technology

[0013] The problem to be solved by the present invention is to provide a power control method of the downlink high-speed shared control channel to solve the defect that the power of the downlink high-speed shared control channel cannot be dynamically controlled in the prior art

Method used

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  • Power control method of downlink high-speed shared control channel
  • Power control method of downlink high-speed shared control channel
  • Power control method of downlink high-speed shared control channel

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no. 1 example

[0049] Combine below image 3 The first embodiment of the present invention is described. This embodiment describes the situation where the downlink HS-SCCH power control method is applied when the downlink HS-SCCH transmission power is relatively low.

[0050] First, step s301 is executed to determine the demodulation performance of the downlink high-speed shared control channel HS-SCCH at the base station NodeB side. After the base station NodeB sends the data frame HS-PDSCH downlink, the UE will send the ACK or NACK information and the CQI information that meets the sending conditions after a delay of m*256chips on the uplink dedicated channel DPCH. The NodeB demodulates the uplink HS-DPCCH channel, and obtains the carried ACK or NACK and CQI information. The number of DTXs that should have been fed back as ACK or NACK information is counted through the information.

[0051] Step s302, at the base station NodeB side, according to the demodulation performance of the downli...

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Abstract

This invention discloses a power control method for a down high speed shared control channel including the following steps: A, determining the de-modulation performance of a down HS-SCCH at the base station, B, carrying out the adjustment to the emission power bias parameter of the down HS-SCCH based on the de-modulation performance of the HS-SCCH, C, adjusting the emission power of the down HS-SCCH based on the HS-SCCH bias parameter.

Description

technical field [0001] The invention relates to a power control method in a wireless communication system, in particular to a power control method for a downlink high-speed shared control channel. Background technique [0002] HSDPA (High Speed ​​Downlink Packet Access) as a high-speed downlink data packet access technology was introduced into the 3GPP Release 5 version in March 2002. Based on the downlink shared channel, it provides data services, and the theoretical maximum rate exceeds 10Mb. / s, which better solves the problem of limited downlink capacity of the CDMA (Code-Division Multiple Access) system. [0003] The main features of the HSDPA system include: the use of short frames of 2 ms, the use of HARQ (Hybrid Automatic Repeat Request, hybrid adaptive retransmission request) and AMC (Adaptive Modulation and Coding, adaptive modulation and coding) technologies in the physical layer, and the introduction of 16QAM (Quadrature Amplitude Modulation , Quadrature Amplitu...

Claims

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Application Information

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IPC IPC(8): H04B7/005
CPCH04W52/325H04W52/286Y02B60/50H04W52/16
Inventor 李荣强
Owner HUAWEI TECH CO LTD
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