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Method for verifying quadrature modulation data transmitted between baseband unit and radio frequency unit

A technology of quadrature modulation and baseband unit, applied in the field of IQ data verification, can solve the problems of only verification, no online verification, narrow data range, etc., and achieve the effect of wide data range, less resources and simple algorithm

Inactive Publication Date: 2011-12-28
ZTE CORP
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  • Description
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Problems solved by technology

These verification methods all have certain deficiencies: Serdes link verification data range is narrow, only part of the data can be verified; PRBS verification cannot be verified online; CRC verification algorithm is too complicated

Method used

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  • Method for verifying quadrature modulation data transmitted between baseband unit and radio frequency unit
  • Method for verifying quadrature modulation data transmitted between baseband unit and radio frequency unit

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Experimental program
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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] refer to figure 1 , the verification method of the IQ data transmitted between the BBU and the RRU. During the transmission of the IQ data between the BBU and the RRU, through the calculation and comparison of the level by level, if the IQ data is wrong, the fault is located accordingly, including the following step:

[0025] Step 1: Module A obtains the IQ data check value corresponding to each carrier contained in the IQ data according to the cyclic exclusive OR method, and sends each carrier and its corresponding IQ data check value to module B;

[0026] Step 2: Module B sends each received carrier and its corresponding IQ data check value to module C, and calculates its corresponding IQ data check value for each received carrier according to the cyclic XOR method, and the same The calculated value of the IQ data check value corresponding to the carrier is ...

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Abstract

The invention discloses a verification method for orthogonal modulation data transmitted between a baseband unit and a radio frequency unit, including: 1. Module A obtains the IQ data verification value corresponding to each carrier, and verifies each carrier and its corresponding IQ data 2. Module B sends each received carrier and its corresponding IQ data check value to module C, and calculates the corresponding IQ data check value for each received carrier, and the same The calculated value of the IQ data check value corresponding to the carrier is compared with the received value to make a judgment on the transmission between module A and module B; 3. Module C calculates the corresponding IQ data check value for each received carrier , and compare the calculated value of the IQ data check value corresponding to the same carrier with the received value to make a judgment on the transmission between module B and module C. The technical scheme of the invention realizes online verification of all IQ data.

Description

technical field [0001] The invention relates to a method for checking IQ (orthogonal modulation) data, in particular to a method for checking IQ data transmitted between a baseband unit and a radio frequency unit. Background technique [0002] With the development of mobile communications, the wireless network architecture is constantly evolving, and the wireless network architecture characterized by the separation of baseband and radio frequency has attracted more and more attention from the industry. This wireless network architecture separates BBU (Baseband Unit, baseband unit) and RRU (Remote Radio Unit, radio frequency unit). BBU is mainly composed of baseband part and switching part. RRU is mainly composed of transceiver and PA (Power Amplifier, power amplifier ) and other components. The BBU and RRU are connected through optical fiber, and the interface protocols mainly include CPRI (Common Public Radio Interface, common public radio interface), OBSAI (Open Base Stat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04J11/00
Inventor 揭应平赵志勇
Owner ZTE CORP
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