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Terminal forward transmission power control threshold adjusting method for mobile communication system

一种发射功率控制、移动通讯系统的技术，应用在通讯领域，能够解决不能很好地跟踪通讯质量下降或掉话等问题，达到降低掉话率、提高通讯质量的效果

Active Publication Date: 2009-10-14
ZTE CORP
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AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a solution to the phenomenon that the communication quality of the terminal is degraded or the call is dropped due to the fact that the control threshold of the forward transmission power of the terminal in the CDMA mobile communication system is fixed, which leads to the inability to track the actual signal quality change well and cause the communication quality of the terminal to drop. A method for adjusting the forward transmission power control threshold of a terminal in a mobile communication system, the method reduces the call drop rate by dynamically adjusting the forward transmission power control threshold of the terminal according to the forward signal quality of the terminal in the CDMA mobile communication system sector, Improving the Communication Quality of CDMA Mobile Communication System

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  • Terminal forward transmission power control threshold adjusting method for mobile communication system
  • Terminal forward transmission power control threshold adjusting method for mobile communication system

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Embodiment Construction

[0030] figure 1 Shown is the basic forward power control mode in the CDMA mobile communication system, including forward open-loop power control, forward closed-loop power control and forward outer-loop power control. Wherein, when the forward link is initially established, the initial transmit power of the forward link is determined through forward open-loop power control, which is usually set by the resource library of the base station controller 1 .

[0031] The forward closed-loop power control involves the terminal 2 and the base station 3 . Terminal 2 determines whether to send a power up command or a power down command on the reverse link by measuring the signal quality of the forward link, such as the SNR, by comparing the actual measured value with the target value (called the forward power control bit), base station 3 increases or decreases forward link transmit power according to the value of the bit after receiving the forward power control bit. The period of the...

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Abstract

The invention relates to an adjustment method of the terminal forward transmission power control threshold in a mobile communication system, comprising the operating steps: presetting, in base station side, a forward pilot threshold, an upper limit and a lower limit of forward transmission power control threshold, and its adjustment scope; getting the current forward pilot energy that the terminal measures and reports; judging whether the forward pilot energy exceeds the forward pilot threshold; and adjuesting the forward transmission power control threshold of the terminal. The invention judges and adjusts the forward pilot energy that the terminal reports by seting in advance the said parameters, so as to achieve the object of dynamically adjusting the forward transmit power control threshold of terminals in the sector, reducing the call droped rate, and raising the communication quality ot the CDMA mobile communication system.

Description

technical field [0001] The present invention relates to a method for adjusting the forward transmission power control threshold of a terminal in a mobile communication system, especially a method for adjusting the control threshold of a terminal's forward transmission power in a CDMA mobile communication system, according to the signal quality of any specific terminal's actual channel in a sector. A method for dynamically adjusting the forward transmit power control threshold. It belongs to the field of communication technology. Background technique [0002] In the CDMA mobile communication system, the quality of power control directly affects the communication performance of the system, which is mainly reflected in the communication capacity and call drop rate. [0003] For the forward power control mode of the terminal in the sector in the CDMA mobile communication system, it usually includes open-loop, closed-loop and outer-loop control. The forward transmit power contr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/005
CPCH04W52/367H04W52/143
Inventor 刘学敏李欣刘晓寒
Owner ZTE CORP
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