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Transmission power control method, TPC command transmission method, and radio communication device

A technology for transmission power control and wireless communication devices, which is applied in the fields of transmission power control, TPC command transmission, and wireless communication devices, and can solve the problems of consuming limited wireless resource transmission power, excessive HS-DPCCH transmission power, and reducing system throughput, etc.

Inactive Publication Date: 2005-09-14
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] However, when the transmission power of the HS-DPCCH is set to the power with the offset added to the transmission power of the A-DPCH as described above, when the A-DPCH is not in the SHO state or the A-DPCH is in the SHO state In the case of sufficient SIR for communication of a base station, the transmission power of HS-DPCCH will be excess
When the transmission power of HS-DPCCH is excessive, it not only consumes additional transmission power of limited wireless resources and reduces the system throughput, but also increases the interference of HS-DPCCH to other channels, resulting in a decrease in system capacity

Method used

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  • Transmission power control method, TPC command transmission method, and radio communication device
  • Transmission power control method, TPC command transmission method, and radio communication device
  • Transmission power control method, TPC command transmission method, and radio communication device

Examples

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Embodiment Construction

[0026] Embodiments of the present invention will be described below. Figure 4 is a block diagram showing the configuration of a wireless communication device according to an embodiment of the present invention. This wireless communication device is installed in a communication terminal device or a base station device in a mobile communication system. In addition, this wireless communication device is used in a mobile communication system that performs Fast-UL and HSDPA.

[0027] The HO (Hand Over) determination unit 11 determines whether the A-DPCH is in the SHO state, and inputs the determination result to the TPC command extraction unit 17 , the SIR measurement unit 18 , the TPC command generation unit 19 and the wireless transmission unit 23 . In addition, the method of judging whether the A-DPCH is in the SHO state will be described later.

[0028] The reception unit 100 is composed of a radio reception unit 13 , a despreading unit 14 , a demodulation unit 15 , and a de...

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Abstract

In a radio communication system where A-DPCH (Associated-Dedicated Physical Channel) to which soft hand-over is applied and HS-DPCCH (High Speed-Dedicated Physical Control Channel) to which hard hand-over is applied are mixed, in order to perform appropriate transmission power control of the HS-DPCCH, an HO judging section 11 judges whether the A-DPCH is in a soft hand-over state, and a transmission radio section 23 , when the A-DPCH is not in the soft hand-over state, performs transmission power control of the HS-DPCCH according to a TPC command for the A-DPCH transmitted on the A-DPCH, and when the A-DPCH is in the soft hand-over state, performs transmission power control of the HS-DPCCH according to a TPC command for the HS-DPCCH transmitted on the HS-DPCCH.

Description

technical field [0001] The present invention relates to a transmission power control method, a TPC command transmission method and a wireless communication device. Background technique [0002] In the field of wireless communication systems, HSDPA (High Speed ​​Downlink Packet Access) has been proposed, which shares a high-speed and large-capacity downlink channel with multiple communication terminals to perform high-speed packet transmission through the downlink Technology. Also, recently, a technique for increasing an uplink packet transmission rate (hereinafter, this technique will be referred to as Fast-UL (Fast-Uplink) in this specification) is being studied. In HSDPA, such as HS-PDSCH (High Speed-Physical Downlink Shared Channel, high-speed physical downlink shared channel), A-DPCH (Associated-Dedicated Physical Channel, with dedicated physical channel), HS-DPCCH (High Speed-Dedicated Physical Control Channel, high-speed dedicated physical control channel) and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B7/005
CPCH04W52/241H04W52/221H04W36/08H04W52/04H04W52/40H04W52/32H04W52/286H04W52/16H04W36/18
Inventor 上原利幸西尾昭彦平松胜彦
Owner PANASONIC CORP