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Power control method of high-speed physical control channel in high-speed data access system

A technology for physical control channels and high-speed data access, applied in power management, code division multiplexing systems, transmission control/equalization, etc., and can solve problems such as increased interference, low power control accuracy, and high power. Achieve the effect of high power control accuracy

Inactive Publication Date: 2003-07-09
HUAWEI TECH CO LTD
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Problems solved by technology

However, the application of this method may cause the power to be too high to cause increased interference, or the power to be too low to meet the requirements of correct information reception, so the power control accuracy of the HS-DPCCH channel using the existing method is low

Method used

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  • Power control method of high-speed physical control channel in high-speed data access system
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  • Power control method of high-speed physical control channel in high-speed data access system

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0024] In the downlink high-speed access system (HSDPA), in order to realize hybrid automatic retransmission and adaptive modulation and coding technology, an uplink dedicated physical control channel (HS-DPCCH) must be added to transmit related uplink signaling. The trend of HS-DPCCH power adjustment is the same as that of the original dedicated channel, but the spreading factor, the encoding method of information and the processing method under soft handover are all different. Therefore, on the basis of the original dedicated channel power adjustment, the present invention adds bias powers of different processing gains, so that the information of the HS-DPCCH channel can be correctly received by the base station.

[0025] Since the present invention adds different bias powers to the original power adjustment, it is necessary to analyze different network env...

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Abstract

The present invention discloses a power control method of high-speed physical control channel in high-speed data access system. Said method is characterized by that according to the different network environment of UE and its state and its transferred data it can define the adoption of different biased power to regulate the transmission power of HS-DPCCH channel on the basis of original special-purpose channel power control, so that it can more really reflect the requirements of HS-DPCCH chanel for transmission power so as to make the information of HS-DPCCH channel can be correctly received by base station, therefore said invention has higher powre control accuracy of HS-DPCCH channel.

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 high-speed physical control channel in a high-speed data access system. Background technique [0002] In order to meet the needs of the development of wireless high-speed data services, high-speed downlink data access (HSDPA) technology is introduced in the third-generation mobile communication system. The key to this technology is the use of hybrid automatic repeat transmission (HARQ) and adaptive modulation and coding technology (AMC) controls the transmission of data. The base station sends data to the user equipment (UE), and the UE feeds back a confirmation or non-confirmation message of data reception to the base station according to the quality of the received data, and the base station decides whether to retransmit the corresponding data according to the feedback from the UE. Since the modulation and coding methods ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/36H04B7/005H04B7/26H04W52/48
Inventor 池振涛尹宇芳
Owner HUAWEI TECH CO LTD
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