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Closed loop power control processing method and base station

A closed-loop power control and processing method technology, applied in the field of communication, can solve the problems of not considering the actual situation of the channel, the inaccurate control of terminal transmission power, etc., and achieve the effect of good terminal transmission power and good adjustment

Active Publication Date: 2012-01-11
NCH 93有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In related technologies, the adjustment of the target SNR is divided into increasing the target SNR and reducing the target SNR, and the step size of the increase and decrease is set in advance and fixed, without considering the actual situation of the channel. As a result, the control of the terminal's transmit power is inaccurate

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  • Closed loop power control processing method and base station
  • Closed loop power control processing method and base station
  • Closed loop power control processing method and base station

Examples

Experimental program
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Effect test

Embodiment 1

[0022] In this embodiment, a closed-loop power control processing method is provided, figure 1 is a flowchart of a closed-loop power processing method according to an embodiment of the present invention, and the process includes the following steps:

[0023] Step S102, the base station receives the uplink information sent by the terminal;

[0024] Step S104, the base station adjusts the initial value of the target signal-to-noise ratio of the uplink control channel according to the received uplink information.

[0025] Through the above steps S102 and S104, when the base station adjusts the initial value of the target signal-to-noise ratio, it no longer adopts the fixed step size set in advance, but adjusts according to the situation of receiving uplink information. The adjustment of the initial value of the target signal-to-noise ratio takes into account the condition of the channel, so that the transmit power of the terminal can be better controlled.

[0026] Preferably, t...

Embodiment 2

[0042] In this embodiment, the embodiment and the preferred embodiment in Embodiment 1 are integrated, and a PUCCH closed-loop power control solution is provided, which allows the base station side to Adaptively adjust the target signal-to-noise ratio of the uplink control channel. Moreover, the concept of avoidance is introduced to the PUCCH and PUSCH of adjacent cells to reduce the inter-cell interference of the uplink control channel. For PUCCH power control, a processing mechanism for receiving errors in power control command words is introduced.

[0043] Figure 4 It is a flowchart of a PUCCH closed-loop power control method according to an embodiment of the present invention, as shown in Figure 4 As shown, the process includes the following steps:

[0044] Step S402, configure parameters related to target signal-to-noise ratio adjustment, power control command word generation, and power control command word reconfiguration, including the threshold of comparison stati...

Embodiment 3

[0065] PUCCH closed-loop power control in Frequency Division Duplex (FDD for short) mode of the LTE system.

[0066] Step 1: Configure the PUCCH of adjacent cells to occupy the same frequency band to avoid PUCCH and PUSCH in adjacent cells, or transmit relevant information through the X2 port for semi-static or dynamic avoidance; configure the number of consecutive statistics when increasing the target SNR The threshold is 5, and the threshold of continuous counting times when the target signal-to-noise ratio is reduced is 25; the threshold of continuous counting times when the power needs to be reduced (that is, the value of the power control command word needs to be sent to -1) is 150; the power control command word weight is configured Configure the judgment threshold as 10dB; configure the upper and lower thresholds of the target signal-to-noise ratio adjustment value as the maximum value PI / 2 of the function atan; configure that it takes 2ms from sending control information ...

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Abstract

The invention provides a closed loop power control processing method and a base station. The closed loop power control processing method comprises the steps: the base station receives uplink information sent by a terminal; and the base station regulates an initial value of a target signal to noise ratio of an uplink control channel according to the condition of receiving the uplink information. According to the invention, the transmitting power of the terminal can be better regulated.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a closed-loop power control processing method and a base station. Background technique [0002] In a wireless communication system, in order to overcome interference and noise, reduce interference to neighboring cells, and save power, both the base station side and the terminal side must perform power control. For example, for a terminal (User Equipment, referred to as UE), if in order to ensure the stability of the received power of the cell, the transmit power is relatively high when it is far away from the base station of the serving cell, and the transmit power is relatively low when it is close to the base station of the serving cell; on the contrary, In order to ensure the stability of interference to adjacent cells, the transmit power is lower when far away from the base station of the serving cell, and is higher when close to the base station of the serving cell. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/08H04W88/08
Inventor 王阿妮
Owner NCH 93有限责任公司