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Target variable protocol data unit codec code automatic generation implementation method

A protocol data unit and automatic generation technology, applied in the field of communication, can solve problems such as poor scalability, difficult expansion, and no target platform provided by ECN rules, and achieve the effect of simple operation and easy implementation

Active Publication Date: 2014-01-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] 1. Poor scalability, adding new target platforms, new code must be written
[0007] 2. The user cannot independently develop the new target platform, but must be very familiar with the working principle of the code generation program, so usually the porting work of the target platform is completed by the developer of the code generation system
[0008] 3. Due to the difficulty of expansion, the number of supported target platforms is very limited
[0009] Although there are also systems that provide descriptions of encoding rules, such as tools that support ECN rules, ECN rules do not provide description functions for target platforms, and can only achieve limited customization of encoding rules. The above-mentioned problems still exist when adding support for new target platforms. question

Method used

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  • Target variable protocol data unit codec code automatic generation implementation method
  • Target variable protocol data unit codec code automatic generation implementation method

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Embodiment Construction

[0042] The present invention will be described in further detail below.

[0043] It is assumed that the target platform used is UML language based on Telelogic TAU G2, and ASN.1 language is used for PDU description. The basic elements supported by the system are empty type (NULL), integer type (INTEGER), Boolean type (BOOLEAN), real number type (REAL), enumeration type (ENUM), bit string type (BIT STRING), string type (OCTETSTRING ). Composition elements include SEQUENCE OF, SET OF, CHOICE, SEQUENCE, and SET.

[0044] Write the target platform feature description file, which includes the following contents:

[0045] (1) The code of Telelogic TAU G2 corresponding to the type definition (type), encoding function (encode), and decoding function (decode) of basic elements such as NULL, INTEGER, BOOLEAN, REAL, ENUM, BIT STRING, and OCTET STRING.

[0046] (2) The code of the Telelogic TAU G2 corresponding to the combination element type definition (type), encoding function (encod...

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Abstract

The invention discloses a target variable protocol data unit codec code automatic generation implementation method. Firstly, a target platform characteristic description file is written, the file describes the basic conventional characteristics of the specific target platform, then a PDU description file is written to describe composition of inner elements of PDU, a system automatically analyzes the PDU description file and generates an abstract syntax tree irrelevant to the target platform according to the content thereof, and then the system traverses the abstract syntax tree and generates a data dictionary relevant to the target platform by utilizing the characteristic of the target platform, and finally a code template base is written and PDU codec code directing to the specific target platform is generated. The system applying the method can conveniently generate PDU codec code supporting various target platforms, and especially the target platform and template to generate code can be completely customized without modifying the code generation system.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to an implementation method for automatically generating codec codes of protocol data units of variable objects. Background technique [0002] The information unit exchanged between peer-to-peer protocols is called a protocol data unit (ProtocolData Unit, PDU). In order to reduce the bandwidth required to transmit PDUs, various communication protocols have specially designed the PDU encoding format in order to transmit as much information as possible with as few bits as possible. Although the data in this compressed encoding format is easy to transmit, it brings inconvenience to the processing of the communication software. Therefore, in the development and testing of the communication protocol stack, it is necessary to write a special PDU codec program to realize the PDU bit string and the internal data of the application. Conversion between structures. In the protocol sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06G06F9/44
Inventor 李海张钦郑哲侯舒娟吴嗣亮孙昕
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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