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Transmission power control apparatus in wireless communication system and method therefor

A technology for transmission power and mobile communication systems, applied in the field of transmission power control devices, can solve the problems of complex transmission process, low efficiency, increase of R-CQICH transmission power, etc., and achieve the effect of reducing overhead messages

Inactive Publication Date: 2007-02-14
LG ELECTRONICS INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the R-ACKCQICH gain for pilot power (RLGAIN_ACKCQICH_PILOT) is transmitted to all mobile terminals to solve this problem, the transmission power of the R-CQICH is unnecessarily increased to inefficiency
Meanwhile, if the base station sends the R-ACKCH power adjustment gain to each mobile terminal, the message load transmitted to the mobile terminal increases, and the corresponding transmission process becomes very complicated

Method used

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  • Transmission power control apparatus in wireless communication system and method therefor
  • Transmission power control apparatus in wireless communication system and method therefor
  • Transmission power control apparatus in wireless communication system and method therefor

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Embodiment Construction

[0048] Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts. Although the present invention is illustrated with respect to a mobile terminal, it is contemplated that the present invention may be used at any time provided a new transport structure is provided for establishing a connection between a mobile communication device and a network (also referred to as a base station).

[0049] figure 2 is a flowchart of a transmission power control method for R-CQICH. refer to figure 2 , the mobile terminal receives the signal sent from the base station (S11), and then estimates the current forward channel quality (S12). And, the mobile terminal calculates the R-CQICH transmission power using the CQICH power gain for the reverse pilot power value RLGAIN_CQICH_PILOT ...

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Abstract

The present invention provides a device and method for independently controlling the transmission power of R-CQICH (Reverse Channel Quality Indication Channel) and R-ACKCH (Reverse Acknowledgment Channel). The present invention comprises receiving a first parameter corresponding to the R-CQICH and a second parameter corresponding to the R-ACKCH from the base station through an overhead message, and independently using the first and second parameters to determine the R-CQICH and the R - Procedure for transmission power of ACKCH.

Description

technical field [0001] The present invention relates to a power control method suitable for a mobile communication system, and more particularly, to a transmission power control apparatus and method using a reverse channel quality indicator and an acknowledgment indicator. Background technique [0002] In radio communication, the channel environment changes according to the location drift of the mobile terminal. Therefore, it is preferable to modify the modulation and coding scheme to suit the channel quality of each situation. [0003] Regarding setting a modulation scheme, when the channel quality is good (ie, less interference), the communication system can use modulations that allow high-speed data transfer, such as QAM (Quadrature Amplitude Modulation) and M-ary PSK (Phase shift keying). However, in the case where the channel quality is poor, it can use modulation such as BPSK (Binary Phase Shift Keying) which is resistant to interference. [0004] Regarding setting ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H04Q7/22H04W52/16H04W52/32H04W52/48H04W52/50
CPCH04W52/48H04W52/16H04W52/325H04W52/50H04W52/32
Inventor 权纯逸庆赞浩尹宁佑金沂濬安淙会尹硕铉
Owner LG ELECTRONICS INC
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