Gain adjustment method and apparatus
A gain adjustment and gain adjustment technology, which is applied in the field of gain adjustment, can solve the problems of narrowing the cell configuration power range, degrading signal quality, and reducing the accuracy of baseband signals, and achieves the effect of expanding cell configuration power and ensuring reliability.
Inactive Publication Date: 2016-04-20
ZTE CORP
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Problems solved by technology
[0007] In the existing gain adjustment method, since the radio frequency gain has nothing to do with the cell configuration power during the adjustment process, and the bit width of the baseband module indicating data is limited, that is, the range of the baseband gain is limited, if the cell configuration power When the baseband gain decreases to a certain extent, the accuracy of the baseband signal will also decrease, and the quality of the signal sent by the radio frequency will decrease.
Therefore, the cell configuration power cannot be set very low, that is, the cell configuration power range is reduced
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[0062] In order to facilitate the understanding of those skilled in the art, the following further description of the present invention is given in conjunction with the accompanying drawings, which cannot be used to limit the protection scope of the present invention. It should be noted that the embodiments in this application and various modes in the embodiments can be combined with each other if there is no conflict.
[0063] See figure 1 , The present invention proposes a method for adjusting gain, including:
[0064] Step 100: For each channel, calculate the difference between the channel rated full power and the channel configuration power.
[0065] In this step, channel configuration power = cell configuration power-10lg (number of channels).
[0066] For example, when the channel rated full power is 37dBm and the channel configuration power is 10dBm, the calculated difference is 27dBm.
[0067] Step 101: Adjust the target baseband gain and target radio frequency gain according t...
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The invention discloses a gain adjustment method and apparatus. The method comprises the steps of for each channel, calculating the difference between channel rated full power and channel configuration power; adjusting target baseband gain and target radio frequency gain according to the calculated difference; and adjusting the current baseband gain as the target baseband gain, and adjusting the current radio frequency gain as the target radio frequency gain. Through the scheme of the invention, the current baseband gain and the current radio frequency gain are adjusted simultaneously according to the difference between the channel rated full power and the channel configuration power, and therefore the cell configuration power is enlarged. Further, the current radio frequency gain is calculated according to the power of a downlink sub frame of a baseband signal and a downlink sub frame of an antenna feeder signal which are located at the same position, and the reliability of the calculated current radio frequency gain is ensured.
Description
Technical field [0001] The present invention relates to long term evolution (LTE, Long Term Evolution) technology, in particular to a method and device for adjusting gain. Background technique [0002] In the LTE system (including Time Division Duplexing (TDD) mode and Frequency Division Duplexing (FDD) mode), eNodeB belongs to the wireless access part. The transmit power of the eNodeB cell determines the coverage of the base station. In order to solve the coverage problem or avoid interference and other problems, there will be some requirements for actively or automatically adjusting the power of the eNodeB cell. [0003] In the LTE system, eNodeBs all include a baseband module and a radio frequency module. When the service is full, the power emitted by the RF antenna port is consistent with the configured power of the cell. The calculation of the actual transmit power of the cell in the LTE system is based on the frame structure of the radio frame. The length of each radio fra...
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IPC IPC(8): H04W52/52
CPCH04W52/52
Inventor 宋连坡李刚魏元庆
Owner ZTE CORP