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Auxiliary pilot 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 MIMO terminal performance, loss of non-MIMO terminal performance, etc.

Active Publication Date: 2013-02-13
CHINA UNITED NETWORK COMM GRP CO LTD
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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

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  • Auxiliary pilot frequency transmission power adjustment method and base station
  • Auxiliary pilot frequency transmission power adjustment method and base station
  • Auxiliary pilot frequency transmission power adjustment method and base station

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Embodiment Construction

[0022] figure 1 This is a flowchart of the first embodiment of the method for adjusting the transmission power of the tutorial frequency according to the present invention, such as figure 1 As shown, the method of this embodiment may include:

[0023] Step 101: Determine the minimum power threshold required to be received on the tutorial frequency antenna of the MIMO terminal;

[0024] In this embodiment, the minimum power threshold may be determined according to the modulation mode of the channel quality indication (Channel Quality Indication, hereinafter referred to as CQI) fed back by the MIMO terminal through the tutorial antenna. Due to the different CQI modulation methods, the minimum power threshold of the MIMO terminal auxiliary frequency antenna is also different. Therefore, Table 1 lists the minimum power threshold required by the MIMO terminal auxiliary frequency antenna CQI modulation method, so as to be based on the CQI modulation method Determine the corresponding min...

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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 present invention relates to communication technology, in particular to a method for adjusting the transmission power of a tutorial frequency and a base station. Background technique [0002] In High-Speed ​​Packet Access+ (HSPA+), an evolution scheme of Multiple Input Multiple Output (MIMO) technology is that the base station adopts the master tutor frequency mode, in which the master tutor frequency mode Next, since the non-MIMO terminal can only receive the dominant channel signal sent by the base station, and the secondary channel signal is an interference signal for the non-MIMO terminal, the primary secondary channel mode will reduce the communication performance of the non-MIMO terminal. [0003] In order to solve the influence of the tutoring frequency on non-MIMO terminals, the prior art uses manual methods to adjust the transmitting power of the tutoring frequency. However, if the tutoring frequency is reduced too much, the performance of the MI...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W52/32H04W52/42H04B7/04H04B7/06H04L5/00
CPCY02B60/50
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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