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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: 2008-06-18
HUAWEI TECH CO LTD
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AI Technical Summary

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
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  • 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

A kind of power control method in the high speed shared control channel, includes the following steps: A. determines the demodulation performance of the high speed shared control channel HS-SCCH at the base station (s101); B. adjusts the transmission power offset parameter of the high speed shared control channel HS-SCCH at the base station according to said demodulation performance of the high speed shared control channel HS-SCCH (s 102); C. adjusts the transmission power of the high speed shared control channel HS-SCCH according to the adjusted power offset parameter of the high speed shared control channel HS-SCCH (s103). The invention adaptively increases or reduces the transmission power according to the case that the down channel transmission power is on the low side or on the high side. It can be validly guaranty the demodulation performance requirement and the user data transmission rate, and also can make the most of the Node B downlink transmission power.

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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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
CPCH04W52/325Y02B60/50H04W52/16H04W52/286
Inventor 李荣强
Owner HUAWEI TECH CO LTD
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