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Forward power overloads control method

A technology of overload control and forward power, applied in the direction of transmission control/equalization, advanced technology, climate sustainability, etc., can solve problems such as low transmission power, user terminal call drop, and little contribution to system overload, and achieve guaranteed Quality of service, effect of mitigating overload state

Inactive Publication Date: 2008-05-07
ZTE CORP
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

Although this method can alleviate the overload, for user terminals with good forward links and low forward transmit power, if the link becomes slightly worse, and at this time it is limited to increase the forward transmit power, Then it is possible to cause the user terminal to drop the call, thereby increasing the call drop rate of the communication system
On the other hand, since the transmission power of this type of user terminal is very small, the contribution to reducing the system overload after the call drop is small, so the overload state cannot be effectively alleviated

Method used

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Embodiment Construction

[0022] In order to make the purpose, technical solution and advantages of the present invention clearer, the following examples are given to further describe the present invention in detail.

[0023] In the embodiment of the present invention, multiple power thresholds of user terminals are set, user terminals are divided into different levels according to their forward power, multiple overload thresholds of base station forward total transmission power are set, and base stations are divided into multiple levels overload status, and also set the corresponding relationship between the user terminal power threshold and the base station overload threshold. When the base station is overloaded, limit the forward power of those user terminals with higher levels, that is, with high forward power. power, thereby effectively alleviating the overload state of the base station.

[0024] FIG. 1 is a schematic diagram of classifying the overload status of a base station. Fig. 2 is a sche...

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Abstract

The present invention discloses a method for the forward power overload control; a plurality of power thresholds is arranged on the user terminal and a plurality of overload thresholds is arranged at the base station, and the correspondence between the power and overload thresholds is established; the method also comprises that the method judge that whether the forward gross emitting power of the base station increases to surpass a overload threshold; if the power surpasses, the forward emitting power of the user terminal is forbidden to be lifted if the forward-link emitting power is more than the power threshold which is corresponding to the overload threshold. With the present invention, when the forward emitting power of the base station is overloaded, the user terminal with comparatively large power is limited to lift power first; and then when the overload situation becomes more and more serious, the user terminal with comparatively small power is limited to lift power; in this way, the overload situation of the base station is effectively alleviated and the adverse effect of user terminal which is provided with good forward-link chain circuit and low forward-link emitting power is prevented; moreover, the service quality is effectively ensured.

Description

technical field [0001] The invention relates to a base station transmission power overload control technology in a mobile communication system, in particular to a forward power overload control method. Background technique [0002] In mobile communication systems such as Code Division Multiple Access (CDMA), a base station can establish forward traffic channels with multiple user terminals at the same time. The base station uses a specific power control algorithm to transmit power on each forward traffic channel according to the transmit power required by each user terminal, so as to ensure normal business communication. [0003] As the number of user terminals within the coverage of the base station increases, the total power required by these user terminals increases, and the total forward transmit power of the base station also increases accordingly. When the total forward transmit power exceeds the rated transmit power of the base station, the base station system enters...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005
CPCY02D30/70
Inventor 罗夙
Owner ZTE CORP
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