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Self-adaptive power control method

A technology of power control and transmission power control, which is applied in the field of spread spectrum communication, can solve the problems of not being able to receive time-continuous signals and not being optimal, and achieve the effect of improving power control performance, simple implementation, and less increase in calculation

Inactive Publication Date: 2005-10-12
HUAWEI TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

Therefore, neither the base station nor the mobile station can receive time-continuous signals, but only signal fragments of one time slot and one time slot, which are intermittent in time
[0004] On the other hand, the power control step size selection technology in the above patent is not optimal

Method used

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Embodiment Construction

[0033] The following takes the third-generation mobile communication standard TD-SCDMA system as an example to illustrate how the present invention is implemented. Because the structure of the power control step generation module is very simple, it can be placed in either the mobile station or the base station. Let's take the power control step generation module inside the mobile station as an example to illustrate.

[0034] FIG. 1 is a schematic diagram of the basic structure of the internal inner loop power control process of the mobile station in the present invention. Inside the mobile station, it includes modules such as receiver, power control step generation, transmission power control, and transmitter.

[0035] The demodulation module in the receiver demodulates the received signal of the receiving antenna to obtain the demodulated signal, and at the same time obtain the demodulated TPC command bit (the value is -1 or 1. Let me explain here, if the TPC command bit is ...

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Abstract

An adaptive power control method controlling orders according to an emitting power demodulated from receiving signals by the demodulated module in the receiver or controlling the order bit according to the emitting power generated from a compared result between internal ring power control signal-to-interference ratio measurement value and outside ring power control signal-to-interference target value to be sent to the emitting power module and power control step generating module (2) computing coherent coefficient A(m) of emitting power control order at the step length k(m) based on A(m)(3) inputting the said k(m) into the emitting power control module to adjust the emitting power automatically to emit the modulated signal via the emitter.

Description

Technical field: [0001] The invention relates to the field of spread spectrum communication, in particular to a method for adaptive power control of a mobile communication system. Background technique: [0002] Power control is an essential and important function in mobile communication systems, especially in CDMA systems. The inner loop power control module it contains, by measuring the signal-to-interference ratio (hereinafter referred to as SIR) of the received signal, and then compares it with the SIR target value set according to a certain QoS in the outer loop power control, when the measured SIR value is low When the SIR target value is reached, an "up" power control command is generated, and when the measured SIR value is higher than the SIR target value, a "down" power control command is generated. The mobile station (during uplink power control) or the base station (during downlink power control) can adjust the transmit power with a certain step size through the r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/24H04B7/005H04W52/04H04W52/26H04W52/36
Inventor 位继伟
Owner HUAWEI TECH CO LTD
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