Detection method and device for idle port synchronization error

An air interface synchronization and detection method technology, applied in electrical components, wireless communication and other directions, can solve the problems of expensive and cumbersome spectrum analyzers, inconvenient operation, time difference, etc., and achieve the effect of improving detection accuracy and easy operation.

Active Publication Date: 2009-04-01
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the air interface synchronization error between TD base stations is mainly detected by checking the pilot frequency difference between the TD base stations or analyzing the LOG information of the terminal through the spectrum analyzer. However, the air interface synchronization error obtained from the LOG information of the spectrum analyzer and the terminal also includes: due to the terminal The time difference caused by the different distances to the TD base station is inaccurate, and the use of a spectrum analyzer is expensive and heavy, and it is inconvenient to operate

Method used

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  • Detection method and device for idle port synchronization error
  • Detection method and device for idle port synchronization error

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Embodiment 1

[0030] In this embodiment, the time difference between the terminal and different TD base stations is obtained through the time of sending the SYNC_UL and the sending advance sent by the TD base station to the terminal.

[0031] figure 1 It is a schematic diagram of the network structure of the embodiment of the present invention, such as figure 1 As shown, the terminal resides in the cell of TD base station 1, and TD base station 2 and TD base station 3 are adjacent cells of TD base station 1.

[0032] TD base station 2 and TD base station 3 can detect terminals residing within the cell range of TD base station 1, and the terminal can also obtain broadcast messages from neighboring cells TD base station 2 and TD base station 3 through searching.

[0033] figure 2 It is a flow chart of the air interface synchronization error detection method of the present invention, such as figure 2 As shown, the detection method of air interface synchronization error of the present inve...

Embodiment 2

[0052] In this embodiment, the time difference between the terminal and different TD base stations is acquired through the GPS location information of the terminal and the TD base station.

[0053] Such as figure 1 As shown, the terminal resides in the cell of TD base station 1, and TD base station 2 and TD base station 3 are adjacent cells of TD base station 1.

[0054] TD base station 2 and TD base station 3 can detect terminals residing in the cell range of TD base station 1, and the terminal can obtain broadcast messages of TD base station 2 and TD base station 3 in neighboring cells through searching. Place the location information of each TD base station in the existing broadcast message of the TD base station, such as longitude, latitude, altitude, etc.; correspondingly, the terminal side adds GPS that can be used to detect the location information of the terminal.

[0055] Such as figure 2 As shown, the detection method of the air interface synchronization error of ...

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Abstract

The invention discloses a detection method of an open synchronization error, comprising: acquiring time difference from terminals to different TD-SCDMA system base system (TD base station); acquiring observation time difference from different TD base stations to the same terminal; computing the open synchronization error between different TD base stations, according to the time difference of the acquired terminal to the TD base station and the observation time difference from different TD base stations to the same terminal; multimetering the open synchronization error and getting averaging. The invention also discloses a detection device of an open synchronization error, according to the detection method and the device provided by the invention, from the observation time difference from the different TD base stations to the terminal to perform pilot frequency phase measurement by the downstream pilot signal or the basic common control channel (PCCPCH) of the TD base station, the time difference from the same terminal to different TD base stations is eliminated, thereby increasing detection accuracy of the open synchronization error, requiring no assistant devices, operation is convenient.

Description

technical field [0001] The invention relates to an error detection technology of a Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, in particular to a method and a device for detecting an air interface synchronization error of a TD-SCDMA system base station (TD base station). Background technique [0002] In the TD-SCDMA system, strict synchronization must be maintained between TD base stations, and the synchronization between TD base stations depends on the synchronization between Global Positioning Systems (GPS) to ensure. However, due to errors in the synchronization signals between GPS receivers and errors between the air interface signals of the TD base stations and their own GPS receivers, air interface synchronization errors will occur between the TD base stations. When the GPS receiver is working abnormally or the TD base station is working abnormally, it will lead to a large air interface synchronization error. If the air interface synchro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/08H04W64/00H04W92/12
Inventor 梁志科孙长果马骁
Owner DATANG MOBILE COMM EQUIP CO LTD
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