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Tutoring frequency transmission power adjustment method and base station

A transmission power and power adjustment technology, applied in the field of communication, can solve the problems of loss of non-MIMO terminal performance, loss of MIMO terminal performance, etc.

Active Publication Date: 2015-12-16
CHINA UNITED NETWORK COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the influence of the pilot frequency on non-MIMO terminals, the existing technology adopts a manual method to adjust the transmit power of the pilot frequency, but the performance of the MIMO terminal will be lost if the pilot frequency is reduced too much, and the performance of the non-MIMO terminal will be lost if the pilot frequency is too small

Method used

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  • Tutoring frequency transmission power adjustment method and base station
  • Tutoring frequency transmission power adjustment method and base station
  • Tutoring frequency transmission power adjustment method and base station

Examples

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Embodiment Construction

[0022] figure 1 It is a flow chart of Embodiment 1 of the method for adjusting the coordinator transmission power of the present invention, as shown in figure 1 As shown, the method of this embodiment may include:

[0023] Step 101, determine the minimum power threshold value required to be received on the pilot frequency antenna of the MIMO terminal;

[0024] In this embodiment, the minimum power threshold value may be determined according to a modulation mode of a channel quality indication (Channel Quality Indication, hereinafter referred to as CQI) fed back by the MIMO terminal through the pilot frequency antenna. Due to the different modulation methods of CQI, the minimum power threshold value of the secondary channel antenna of the MIMO terminal is also different. Determine the corresponding minimum power threshold.

[0025] Table 1 The minimum power threshold value required by the CQI modulation mode of the secondary frequency antenna of the MIMO terminal

[0026] ...

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Abstract

The invention provides an auxiliary pilot frequency transmission power adjustment method and a base station. The auxiliary pilot frequency transmission power adjustment method comprises confirming a minimum power threshold value required to be received by an auxiliary pilot frequency antenna of a multiple input multiple output (MIMO) terminal, and confirming whether a power value obtained after the transmission power of the auxiliary pilot frequency reduces a first power value is larger than or equal to the minimum power threshold value, and maintaining the transmission power of the auxiliary pilot frequency if the power value is larger than or equal to the minimum power threshold value. According to the auxiliary pilot frequency transmission power adjustment method, the minimum power threshold value required to be received by an auxiliary pilot frequency antenna of the MIMO terminal is compared with the transmission power of the auxiliary pilot frequency after the first power value is reduced, and then the transmission power of the auxiliary pilot frequency is adjusted to balance the influence of the auxiliary pilot frequency on the MIMO terminal and a non-MIMO terminal.

Description

technical field [0001] The invention relates to communication technology, in particular to a method for adjusting pilot frequency transmission power and a base station. Background technique [0002] In the evolved high-speed packet access (High-Speed ​​Packet Access+, HSPA+), an evolution scheme of the Multiple Input Multiple Output (MIMO) technology is that the base station adopts the host-assisted frequency mode. In this mode, due to the non-MIMO The terminal can only receive the main pilot signal sent by the base station, and the secondary pilot signal is an interference signal to the non-MIMO terminal, so the primary pilot signal mode will reduce the communication performance of the non-MIMO terminal. [0003] In order to solve the influence of the pilot frequency on non-MIMO terminals, the existing technology adopts a manual method to adjust the transmit power of the pilot frequency, but the performance of the MIMO terminal will be lost if the pilot frequency is reduced...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/32H04W52/42H04B7/04H04B7/06H04L5/00
Inventor 张香云盛煜吕召彪王健全赵元王蕴实
Owner CHINA UNITED NETWORK COMM GRP CO LTD
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