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Outer loop transmission power control method and radio communication device

A technology for transmission power control and wireless communication devices, which is applied in wireless communication, power management, transmission control/equalization, etc. It can solve the problem of excessive or insufficient transmission power, failure to set the target SIR to an appropriate value, and failure to obtain CRC Results and other issues

Inactive Publication Date: 2005-07-13
PANASONIC CORP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, consider the situation when DTX (Discontinuous Transmission, discontinuous transmission) is applied to A-DPCH, where DTX is a mode that temporarily stops transmission when the bit sequence to be transmitted does not exist, because A cannot be obtained during DTX - CRC result on DPCH, so the target SIR cannot be set to a proper value in the outer loop transmit power control of HS-DPCCH
As a result, there is a problem that the transmission power of HS-DPCCH may become excessive or insufficient during DTX of A-DPCH, so that the outer loop transmission power control of HS-DPCCH cannot be properly performed

Method used

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  • Outer loop transmission power control method and radio communication device
  • Outer loop transmission power control method and radio communication device
  • Outer loop transmission power control method and radio communication device

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Embodiment Construction

[0015] Embodiments of the present invention will be described below. figure 1 is a structural block diagram of a wireless communication device according to an embodiment of the present invention. The wireless communication device here is installed in a communication terminal device or a base station device under a mobile communication system in which A-DPCH is CRC coded and HS-DPCCH is not CRC coded. Besides, according to the mobile communication system, DTX is performed on the A-DPCH but not performed on the HS-DPCCH. In addition, the wireless communication device is used in a mobile communication system implementing Fast-UL and / or HSDPA.

[0016] The transmission data monitoring unit 12 monitors whether or not there is transmission data (bit sequence) of the A-DPCH. Next, when the state of no data transmission continues for a predetermined time, the simulation data creation unit 14 is instructed to create a random series of simulation data. Based on this instruction, the ...

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Abstract

In a wireless communication system where A-DPCH (Associated-Dedicated Physical Channel, with dedicated physical channel) and HS-DPCCH (High Speed-Dedicated Physical Control Channel, high-speed dedicated physical control channel) coexist, in order to (Discontinuous Transmission, discontinuous transmission) also can carry out appropriate outer loop transmit power control to HS-DPCCH during, transmit data monitoring section (12) monitor whether the bit sequence that transmits by A-DPCH exists, analog data creation section (14 ) generates a random sequence for the outer loop transmission power control of the HS-DPCCH in the DTX interval where the bit sequence does not exist, the encoding part (16) performs CRC encoding on the generated random sequence, and then the transmitting radio part (22) passes A- DPCH sends the random series after CRC encoding.

Description

technical field [0001] The invention relates to a method for controlling transmission power of an outer ring and a wireless communication device. Background technique [0002] In the field of wireless communication systems, HSDPA (High Speed ​​Downlink Packet Access, High Speed ​​Downlink Packet Access) is proposed, which shares a high-speed and large-capacity downlink channel with multiple communication terminals to perform high-speed packet transmission through downlinks. In addition, 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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/005H04B7/26H04W52/04H04W52/12H04W52/20H04W52/24H04W52/28
CPCH04W52/04H04W52/12H04W52/20H04W52/241H04W52/248H04W52/286H04L1/0004
Inventor 西尾昭彦
Owner PANASONIC CORP
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