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Sending power control method, mobile station, fixed station and communication system

A technology of transmission power control and transmission power, which is applied in the field of transmission power estimation interval control, and can solve the problems of transmission timing difference influence, unimagined multiple channel transmission timing references, differences, etc.

Inactive Publication Date: 2008-04-02
MITSUBISHI ELECTRIC CORP
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Problems solved by technology

That is, because the maximum transmission power of the mobile station is limited in the DPDCH / DPCCH time slot spanned by the HS-DPCCH, it is highly likely that the transmission power of the mobile station has reached the maximum transmission power in this time slot , the transmission timing difference between DPDCH and HS-DPCCH has a great influence
[0029] As explained above, the current transmission power regulation does not take into account that the transmission timing references of multiple channels transmitted in the uplink are different

Method used

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  • Sending power control method, mobile station, fixed station and communication system
  • Sending power control method, mobile station, fixed station and communication system
  • Sending power control method, mobile station, fixed station and communication system

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Embodiment Construction

[0085] FIG. 1 is an explanatory diagram illustrating a W-CDMA mobile communication system. In FIG. 1 , a mobile communication system 101 is composed of a mobile station (UE) 102 , a base station (NodeB) 103 , and a base station controller (RNC) 104 . The mobile station 102 and the base station 103 communicate by wireless, and the base station 103 and the base station control device 104 communicate by wire. Mobile station 102 and base station 103 use common pilot channel (CPICH) 105, uplink DPCCH 106, downlink DPCCH 107, uplink DPDCH 108, downlink DPDCH 109, uplink HS-DPCCH 110, downlink HS-PDSCH 111. The downlink HS-PDSCH 111 and HS-SCCH are sent in pairs. The base station controller 104 intervenes in communication between the mobile station 102 and the external network 112 . In the 3GPP standard, the base station 103 and the base station control device 104 are called UTRAN (Universal Terrestrial Radio Access Network, Universal Terrestrial Radio Access Network), but they are...

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Abstract

A mobile station for transmitting a plurality of channels of different transmission timings such as DPDCH and HS-DPCCH with an upstream link has a problem that when transmission power is measured in a transmission power measurement interval based on a DPDCH slot, accuracy of the transmission power measurement is affected by the transmission timing difference between the channels. To solve this problem, the transmission power measurement interval is modified according to the channel transmission timing set at the upstream link like DPDCH and HS-DPCCH, presence / absence of HS-DPCCH added in addition to DPDCH, and the standard specification (version) to which the mobile station corresponds.

Description

technical field [0001] The present invention relates to transmission power control of mobile wireless communication terminals, and more particularly to control of transmission power estimation (measurement) intervals. Background technique [0002] In recent years, IMT-2000 has been adopted in ITU (International Telecommunication Union) as a communication standard called the third generation. One of these methods, W-CDMA (FDD) (Wideband Code Division Multiple Access: Frequency Division Duplex, Wideband Code Division Multiple Access: Frequency Division Duplex), has been commercially available in Japan since 2001. The original purpose of the W-CDMA (FDD) method was to achieve a communication speed of up to 2Mbps (Mega bit per sec), and it was approved by the standardization body 3GPP (3 rd .Generation Partnership Project), the version 1999 (or version 3.x.x), which is the standard version summarized in 1999, was decided as the first specification (version). [0003] In additi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04J13/00H04W52/04H04W52/52H04W88/02
CPCH04W52/225H04W52/267H04W52/286
Inventor 庭野和人
Owner MITSUBISHI ELECTRIC CORP
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