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Method and system for power control in DTX (discontinuous transmission)

A technology of power control and inner-loop power control, applied in power management, energy-saving ICT, electrical components, etc., can solve the problem that DTX cannot accurately control power, and achieve the goal of maintaining the normal operation of the link, reducing system interference, and saving power. Effect

Active Publication Date: 2014-07-16
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a power control method and system in DTX, which solves the problem that power control cannot be accurately performed in the DTX process

Method used

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  • Method and system for power control in DTX (discontinuous transmission)
  • Method and system for power control in DTX (discontinuous transmission)
  • Method and system for power control in DTX (discontinuous transmission)

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Embodiment Construction

[0021] The technical solution of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Such as figure 1 Shown, the power control method in a kind of DTX of the present invention comprises steps:

[0023] S101. The base station compares the SIR measurement value reported by the physical layer with the preset SIR threshold value. If the SIR measurement value exceeds the preset SIR threshold value and TFCI=0, TFCI (Transport Format Combination Indicator, transmission format combination identifier), it indicates that the base station detects a special sequence, the UE starts to enter DTX transmission, and the base station starts DTX power control. Make settings.

[0024] S102. During the DTX process of the UE, the base station every other time period t 0 Compare the size of the SIR measurement value and the SIR threshold value once, where, t 0 is a preset time value, which determines the frequency of com...

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Abstract

The invention discloses a method for power control in DTX (discontinuous transmission), which comprises the following steps: S1) comparing a SIR (surface insulation resistance) measured value reported by a physical layer with a preset SIR threshold value, and if the SIR measured value is more than the preset SIR threshold value, and TFCI=0, starting the DTX power control; S2) in the DTX process, keeping comparing the SIR measured value with the preset SIR threshold value at time intervals, and judging the data received by a base station being noise, specific sequence or normal data according the comparison results and TFCI (transmit format combined indicator) value; and S3) acquiring a control command word for power control of special channel according to the judgment result and then executing the power control according to the control command word. The invention also discloses a system for power control in DTX. By the using of the method and system provided by the invention, the base station can accurately control power in the DTX process, thereby achieving the purpose of saving power, reducing system interference and maintaining normal running of link.

Description

technical field [0001] The invention relates to the power control technology of the communication system, in particular to a power control method and system in DTX. Background technique [0002] The power control in the TD-SCDMA system can be divided into open-loop power control and closed-loop power control, and closed-loop power control is further divided into inner-loop power control and outer-loop power control. In the TD-SCDMA system, since the uplink and downlink use the same frequency for transmission, the average path loss of UL (uplink) and DL (downlink) is significantly correlated, so the open-loop power control of the TD-SCDMA system can achieve relatively good accuracy. However, in order to overcome the near-far effect and multipath effect and the fast fading caused by UE (user equipment) movement, it is necessary to continuously update the transmit power of the base station and UE through the inner loop power control during the service transmission process. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/12H04W52/14H04W52/24
CPCY02B60/50
Inventor 廖礼宇林敏李馨
Owner COMBA TELECOM SYST CHINA LTD