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Method, device and system for controlling outer loop power

A control method and power technology, applied in the field of communication, can solve the problems of high packet error rate and inability to adjust the CINR step size in time, and achieve the effect of reducing the packet error rate

Active Publication Date: 2011-05-25
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention is proposed in view of the problem that the relevant technology cannot adjust the CINR step size in time and the packet error rate is relatively high. Therefore, the main purpose of the present invention is to provide a control method, device and system for the power of the outer loop to solve the above-mentioned problems. question

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  • Method, device and system for controlling outer loop power

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Embodiment Construction

[0028] Considering that related technologies cannot adjust the CINR step size in time and the packet error rate is relatively high, embodiments of the present invention provide a method, device and system for controlling outer loop power, including: the base station calculates the uplink channel power based on received data packets Packet loss rate; the base station calculates the adjustment value of the uplink carrier-to-interference and noise ratio according to the comparison result of the packet loss rate and the preset packet loss rate threshold value; the base station adjusts the adaptive modulation and coding according to the adjustment value; the base station sends the adjustment value to the terminal for The terminal adjusts the transmission power according to the adjustment value.

[0029] In the present invention, it mainly relates to an outer loop power control (Outer Loop Power Control) technology, more specifically, the present invention determines the carrier inte...

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Abstract

The invention discloses a method, device and system for controlling the outer loop power. The method comprises the following steps of: calculating packet loss ratio of an uplink channel according to the received data packets by a base station; calculating the adjusted value of uplink carrier interference noise ratio according to the compared results of the packet loss ratio with a preset packet loss ratio threshold by the base station; adjusting self-adaptive modulation codes according to the adjusted value by the base station; and transmitting the adjusted value to a terminal by the base station so as to provide convenience for the terminal to adjust the emission power according to the adjusted value. The invention can immediately adjust CINR (Carrier Interference Noise Ratio) step length according to the packet loss ratio so as to reduce the packet error ratio.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a control method, device and system for outer loop power. Background technique [0002] In the wireless communication environment, in order to overcome the influence of wireless signal slow fading on the signal, prevent the power from rising, and reduce the transmission power as much as possible while satisfying the communication quality, it is necessary to introduce power control. The current power control methods mainly include forward power control, reverse power control. In forward power control, when the mobile station moves to the edge of the cell, the path loss will increase obviously, and the channel quality will decrease. If the power of the downlink data of the MS is increased, the channel information can be improved and the communication quality can be guaranteed. On the contrary, if the MS It is very close to the BS, and the channel quality is very good. Therefore,...

Claims

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Application Information

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IPC IPC(8): H04W52/12H04W52/24H04W52/26
Inventor 徐艮华鲁绍贵唐枫
Owner ZTE CORP