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System and method for calibrating null interfaces among cells

An air interface calibration and cell technology, which is applied in the field of mobile communication, can solve the problems that there is no corresponding solution, and it is difficult to have the same amplitude and phase of radio frequency signals, and achieve the effect of consistent amplitude and phase

Inactive Publication Date: 2013-04-24
POTEVIO INFORMATION TECH CO LTD
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Problems solved by technology

[0003] However, there is currently no corresponding solution for air interface calibration between cells, and it is difficult to make the amplitude and phase of the radio frequency signals of the participating cells consistent

Method used

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  • System and method for calibrating null interfaces among cells
  • System and method for calibrating null interfaces among cells

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0025] Firstly, it needs to be explained that in the present invention, the area covered by a base station is defined as a cell, and the pilots of each base station are orthogonal.

[0026] An inter-cell air interface calibration system provided by the present invention includes: a plurality of base stations and UEs, wherein the structure of each base station and the connection relationship with the UE are the same. figure 1 Only one base station is connected to UE as an example to illustrate the air interface calibration system of the present invention. Such as figure 1 As shown, the base station 101 includes: a radio frequency signal generation unit 1011 and a calibration unit 1012 ; the UE 102 includes: a channel response estimation unit 1021 and a ...

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Abstract

The invention discloses a method for calibrating null interfaces among cells, which comprises the following steps that: each base station transmits the radio-frequency signal of the current time slot to user equipment (UE); the UE estimates a channel pulse response of each base station according to the received radio-frequency signal of the current time slot which is sent by each base station; the UE calculates weighting factors of the channel pulse responses of other base stations corresponding to a reference channel pulse response except a reference base station by taking the channel pulse response of any one base station as the reference channel pulse response; the UE transmits the weighting factor of each of the other base stations except the reference base station to each corresponding base station; and the other base stations except the reference base station apply weights to the radio-frequency signal to be transmitted in the next time slot by using the weighting factors. The invention also discloses a system for calibrating the null interfaces among the cells at the same time. The method and the system can make the amplitude and the phase of the radio-frequency signal of each cell participating in cooperation consistent.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a system and method for inter-cell air interface calibration. Background technique [0002] In the field of wireless communication technology, since there are many types of devices used in the intermediate frequency and radio frequency channels of each base station, and there are certain inconsistencies in the devices selected for the intermediate frequency and radio frequency channels of each base station, multiple devices with inconsistent characteristics are connected in series. Together, it is likely to cause inconsistency in the amplitude and phase of the signals passing through the intermediate frequency and radio frequency channels of each base station. In practical applications, the signal passing through the intermediate frequency and radio frequency channels of the base station is called a radio frequency signal, and the cell that transmits radio frequency signals to...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W24/00H04W88/08H04B17/00
Inventor 吕伯轩池连刚
Owner POTEVIO INFORMATION TECH CO LTD
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