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Method and system for promoting application of CPRI interface, processing module for CPRI interface

An interface processing and interface technology, applied in the field of communication

Active Publication Date: 2011-06-22
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0021] However, the CPRI interface only defines the data transmission format between the baseband processing unit and the intermediate frequency processing unit, so the CPRI can only be applied between the baseband processing unit and the intermediate frequency processing unit interface, which cannot be directly applied between other processing units

Method used

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  • Method and system for promoting application of CPRI interface, processing module for CPRI interface
  • Method and system for promoting application of CPRI interface, processing module for CPRI interface
  • Method and system for promoting application of CPRI interface, processing module for CPRI interface

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Experimental program
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Effect test

Embodiment 1

[0055] 3) The user service data is quite different from the CPRI standard, see Table 3 for the main differences.

[0056] type

Feature 1: Speed

Feature 2: Variety

User service data transmitted in CPRI standard

constant rate

One, the IQ data

User business data transmitted in this embodiment

Constant rate, or burst, or both

one or more

[0057] table 3

[0058] Among them, the data types transmitted by all interfaces are the same as those defined in the CPRI standard, and the transmission functions of C&M and synchronization information are also the same, but there is a big difference in user service data. Therefore, to implement the application of the CPRI standard on all interfaces, it is necessary to design according to the following three steps:

[0059] The first step is to determine that the system is divided into two parts, REC and RE, and set the CPRI interface between REC and RE. The REC in this embodiment is not l...

Embodiment 2

[0098] The CPRI interface is used to process the IQ-like data, C&M information and synchronization information generated by the IQ unit through the CPRI interface; wherein, the IQ-like data will be processed by the IQ mapping unit of the CPRI interface. The C&M information is mapped through the C&M mapping unit of the CPRI interface, and the synchronization information is synchronized and mapped through the synchronization mapping unit of the CPRI interface. In this way, the user service data on different interfaces are completely processed according to the CPRI standard, and are separated in the basic frame. Occupying a fixed position, the CPRI basic frame is decomposed by the deframing unit of the CPRI interface, and the deframed data are respectively transmitted to the de-IQ mapping unit, the de-C&M mapping unit and the de-synchronization mapping unit, and are restored to the original C&M information and synchronization information, and IQ-like data.

[0099] The IQ-decompo...

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Abstract

In order to resolve the problem of design difference due to different interface division in the prior art, the invention provides a method and a system of CPRI interface popularization application and a CPRI interface processing module. The method includes: examining the physical structure of a device, setting the CPRI interface, converting the user service data into similar IQ data, processing the C&M information, synchronizing information and similar IQ data application CPRI standard by the CPRI interface, and restoring the similar IQ data outputted by the CPRI interface into the user service data. The system includes a plurality of processing units and a CPRI interface processing module. The CPRI interface processing module comprises an IQ changing unit, a CPRI interface and a de-IQ changing unit. The application of the technology provided by the invention can guarantee the same interface design support on different physical interfaces, avoids the influence of physical interface division for design, meanwhile also can reuse the interface, and simplifies the design.

Description

technical field [0001] The invention relates to the communication field, in particular to a method, a system and a CPRI interface processing module for popularizing and applying CPRI interfaces. Background technique [0002] CPRI (Common Public Radio Interface, common public radio interface) is an interface standard between REC (Radio Equipment Controller, radio equipment controller) and RE (Radio Equipment, radio equipment) in radio base station equipment formulated by several communication equipment manufacturers. CPRI V2.0 is the latest version of CPRI, it is only formulated for WCDMA (Wideband Code Division Multiple Access, wideband code division multiple access) R5 and previous standards, not applicable to other systems, such as IEEE802.16e, GSM etc.; CPRI V2.0 may not even be applicable to subsequent versions of WCDMA (WCDMA R7, etc.). [0003] According to the definition of CPRI standard, there is an interface between REC and RE that can be physically separated. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/08H04L29/10
Inventor 蒋亚军李琦杨芳梁李修奕
Owner HUAWEI TECH CO LTD
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