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Antenna calibration method and apparatus

A technology of antenna calibration and calibration signal, which is applied in the field of radio frequency transmission

Active Publication Date: 2011-02-02
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009]In the existing antenna calibration method, the signaling support of the air interface is required, and the standard support is required, and the UE is used to assist in the calibration, and the UE needs to complete the parameters in the calibration Work such as measurement and sending measurement reports increases the complexity of UE implementation

Method used

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  • Antenna calibration method and apparatus
  • Antenna calibration method and apparatus
  • Antenna calibration method and apparatus

Examples

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no. 1 example

[0045] figure 2 This is a flowchart of an antenna calibration method provided by an embodiment of the present invention. like figure 2 shown:

[0046] Step 200: The calibration signal processing module of the base station NodeB generates a calibration signal using the available time-frequency resources.

[0047] Step 201: Return the calibration signal generated in Step 200 to the calibration signal processing module after passing through the RF RF transceiver module and the calibration RF transceiver module of the NodeB.

[0048] This step can be specifically:

[0049] A. Send the calibration signal generated by the calibration signal processing module of the NodeB to the RF transceiver module of the NodeB, and the RF transceiver module of the NodeB modulates the received calibration signal to the first frequency point, and couples the modulated calibration signal to the calibration signal RF transceiver module, the calibration RF transceiver module returns the calibrati...

no. 2 example

[0063] image 3 This is a flowchart of an antenna calibration method provided by an embodiment of the present invention. like image 3 shown:

[0064] Step 301: Determine available time-frequency resources.

[0065] Wherein, the determining of available time-frequency resources may be implemented in the following manner:

[0066] Figure 4 It is a schematic diagram of the time-frequency resources under the three implementations of step 301. In the figure, Calibration means specifying time-frequency resources that cannot be used to carry user data or control commands, and Idle means specifying time-frequency resources other than specifying time-frequency resources used to carry user data or control commands. , the remaining idle time-frequency resources, Data / Control represents the time-frequency resources used to carry data or control commands, Subframe represents the subframe, DwPTS represents the downlink pilot channel, UpPTS represents the uplink pilot channel, PRB repr...

no. 3 example

[0096] Figure 7 This is a structural diagram of an antenna calibration apparatus provided by an embodiment of the present invention. like Figure 7 shown:

[0097] The antenna calibration apparatus provided by the embodiment of the present invention includes: a calibration signal processing module 701 of the NodeB, an RF transceiver module 702 and a calibration module 703 of the NodeB.

[0098] The calibration signal processing module 701 of the NodeB is configured to utilize the calibration signal generated by the available time-frequency resources, receive the returned calibration signal, obtain a calibration coefficient according to the returned calibration signal, and perform calibration adjustment according to the calibration coefficient.

[0099] The calibration module 703 is configured to pass the calibration signal generated by the calibration signal processing module 701 of the NodeB through the RF transceiver module 702 and the calibration RF transceiver module 70...

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Abstract

The embodiment of the invention provides an antenna calibration method and a device thereof. The method comprises the steps as follows: a calibrating signal processing module of a base station NodeB utilizes usable time frequency resource to generate a calibrating signal; the calibrating signal passes through an RF (radio frequency) transceiver module and a calibration RF transceiver module of the NodeB and then is returned to the calibrating signal processing module; and calibration factors are obtained according to the returned calibrating signal and calibrating adjustment is carried out according to the calibration factors. The antenna calibration is realized by returning the calibrating signal sent by the NodeB to the NodeB and does not need UE assistance, and therefore the antenna calibration can be realized without the support of air interface signaling.

Description

technical field [0001] The invention relates to the technical field of radio frequency transmission, in particular to an antenna calibration method and device. Background technique [0002] In the traditional Time Division-Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronous Code Division Multiple Access) system based on the Time Division Duplex (TDD, Time Division Duplex) mode, the antenna calibration technology has been successfully applied. The main purpose of antenna calibration is to make the radio frequency (RF) link electrical characteristics of each antenna in the NodeB antenna array consistent, and the electrical characteristics of each uplink / downlink radio frequency link are also consistent. Here, the antenna and its corresponding link are referred to as RF transceiver modules. It can be seen that the base station (NodeB) includes multiple RF transceiver modules. In addition, the NodeB also includes a calibration signal processing modul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W16/28H04W24/00H04W88/08H01Q3/26
Inventor 侯云哲索士强肖国军孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD