A method for adjusting multi-cell downlink power control

A technology of power control and inner loop power control, which is applied in power management, transmission control/equalization, electrical components, etc., can solve problems such as increasing transmit power, reducing transmit power, and soft-combining gain drop, so as to achieve guaranteed gain and reduced Call drop rate and the effect of reducing downlink interference

A technology of power control and inner loop power control, which is applied in power management, transmission control/equalization, electrical components, etc., can solve problems such as increasing transmit power, reducing transmit power, and soft-combining gain drop, so as to achieve guaranteed gain and reduced Call drop rate and the effect of reducing downlink interference

CN101170329BInactive Publication Date: 2012-06-06ZTE CORP
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  • A method for adjusting multi-cell downlink power control
  • A method for adjusting multi-cell downlink power control
  • A method for adjusting multi-cell downlink power control

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Embodiment Construction

[0023] The method of the present invention is further illustrated by the following specific examples.

[0024] Such as figure 2 As shown, a flow chart of a method for adjusting downlink power of multiple cells. The embodiment of the present invention provides a method for adjusting multi-cell downlink power control, including the following steps:

[0025] Step 201, during the soft handover process, monitor the difference and convergence coefficient between the downlink transmission power of the wireless link in the soft handover active set and the set reference power;

[0026] Step 202, jointly determine the value of the accumulated adjustment power through the difference value and the convergence coefficient;

[0027] Step 203 , if the value of the accumulated adjusted power exceeds the set threshold, perform additional power adjustment on the basis of the inner loop power control.

[0028] The content of the present invention describes in detail the method of combining t...

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Abstract

The present information discloses a method for adjusting multi-cell downlink power control, which includes the following steps of: (1) in the process of soft switch, monitoring the difference between the downlink transmission power and the preset referential power of a wireless link and the contraction coefficient thereof in software switch activation set; (2) deciding the accumulated value of power adjustment according to the difference and the contraction coefficient; (3) executing power accessory adjustment on the basis of power control if the accumulated value is above the preset threshold. The method of the invention, through the adjustment to contraction of the transmission power of the base stations to the preset referential power under soft switch, avoids too much deviation of thedownlink transmission power of the wireless links of the same terminal, thus ensuring software switch and gaining, lowering downlink disturbance, and lowering dropping rate.

Description

technical field [0001] The invention relates to a power control method of a mobile communication system, in particular to the design of a multi-cell downlink power control method in soft handover in the mobile communication field. Background technique [0002] With its unique advantages of flexibility and convenience, mobile communication meets people's requirements for communication technology in modern society, and has become the fastest-growing communication method since the mid-1980s. And CDMA (Code Division Multiple Access, Code Division Multiple Access), the technology is the "darling" of mobile communication, in just a few years time, has obtained a huge breakthrough in technology. Soft handover is one of the key technologies of CDMA system, which has been successfully applied to IS95 and CDMA2000 systems, and adopted by the third generation mobile communication system. [0003] Soft switching is unique to CDMA systems. The basic principle is as follows, when the mo...

Claims

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Application Information

Patent Timeline
06 Jun 2012
Publication
CN101170329B
IPC
H04W52/00; H04B7/005
Inventors
张峻峰