WO2011015089A1 - Procédé et appareil de codage et décodage auto-adaptatifs - Google Patents

Procédé et appareil de codage et décodage auto-adaptatifs Download PDF

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Publication number
WO2011015089A1
WO2011015089A1 PCT/CN2010/074029 CN2010074029W WO2011015089A1 WO 2011015089 A1 WO2011015089 A1 WO 2011015089A1 CN 2010074029 W CN2010074029 W CN 2010074029W WO 2011015089 A1 WO2011015089 A1 WO 2011015089A1
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Prior art keywords
avp
information
message
code stream
related information
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PCT/CN2010/074029
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English (en)
Chinese (zh)
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陈刚
甘斌
杨红梅
徐键
何飞
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中兴通讯股份有限公司
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Publication of WO2011015089A1 publication Critical patent/WO2011015089A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00—Network architectures or network communication protocols for network security
    • H04L63/08—Network architectures or network communication protocols for network security for authentication of entities

Definitions

  • the present invention relates to adaptive coding/decoding techniques, and more particularly to a method and apparatus for adaptive coding/decoding. Background technique
  • Diameter protocol Based on the Radius (Remote Authentication Dial In User Service) protocol, the Diameter protocol has evolved into a next-generation authentication, authorization, and accounting (AAA, Authentication, Authorization 3 ⁇ 4 Accounting, ) protocol standard. widely used.
  • AAA Authentication, Authorization 3 ⁇ 4 Accounting
  • the Diameter protocol family includes the Diameter basic protocol and some extended application protocols, such as the Network Access Service (NAS) protocol, the Extensible Authentication Protocol (EAP), the Mobile IP (MIP, Mobile IP) protocol, and the password. CMS (Cryptographic Message Syntax) protocol, Session Initiation Protocol (SIP) application protocol. In addition, vendors are allowed to extend the protocol AVP as needed.
  • NAS Network Access Service
  • EAP Extensible Authentication Protocol
  • MIP Mobile IP
  • CMS Session Initiation Protocol
  • SIP Session Initiation Protocol
  • vendors are allowed to extend the protocol AVP as needed.
  • Diameter messages in each specific scenario have different composition structures, and even the same interface Diameter messages are slightly different in different applications, which gives version compatibility and products. Docking has an impact.
  • Diameter message includes different attribute value pairs (AVPs), which are generally differentiated according to applications, and provide codec solutions corresponding to message structures according to different message structures, such as Figure 1 shows.
  • AVPs attribute value pairs
  • this processing method can satisfy the processing requirements of the Diameter message for the upper layer application, but for the codec part, this part
  • the code needs to be updated according to the extension of the new application, which is not conducive to the expansion of the Diameter message by the new application, does not have reusability, and the message structure of multiple identical Diameter messages exists in different applications at the same time, which is easy to cause confusion and error.
  • the present invention provides an adaptive encoding/decoding method and apparatus for solving the problem that the codec process in the prior art cannot adapt to different applications, different interfaces, different Diameter messages, different vendor definitions, different versions, etc., thereby resulting in message definition. Inflexible and prone to conflicts.
  • An adaptive coding method provided by the present invention includes:
  • the Diameter message code stream is generated according to the application related information and the AVP related information.
  • the application related information includes: an application ID number, a Diameter message code, a Diameter message length, a message structure to be encoded, and start location information;
  • the runtime coding configuration table includes: configuration information of the application, configuration information of the Diameter message, and configuration information of the AVP.
  • the coding method provided by the invention further has the following features:
  • the runtime encoding configuration table is generated as follows:
  • Reading the document to be encoded selecting the message of each interface application and related AVP information according to the extended Bacchus formula rule of the Diameter protocol, and converting the application message and related AVP information into a standard file;
  • Diameter protocol data configuration management process to read the binary code stream in the memory area, and converting the binary code stream into an encoding configuration table according to a message composition format
  • the data read from the encoding configuration table is reorganized into a runtime encoding configuration table by the Diameter protocol process according to the application supported by the project.
  • the network management system When the AMS adjustment command is received by the foreground, the network management system notifies the Diameter protocol data configuration management process to modify the coding configuration table, and after the modification of the coding configuration table is completed, the related modification is performed by using the Diameter protocol process. Partially synchronized to the runtime encoding configuration table.
  • the generating the Diameter message code stream according to the application related information and the AVP related information is specifically:
  • the invention also provides an adaptive decoding method, comprising:
  • the AVP information calculated by the configuration information and the relevant parameters required for decoding is stored in an absolute position.
  • the relevant parameters required for the decoding include: an application ID, a Diameter message code, a Diameter message length information, a Diameter message code stream start position information, and a decoded message structure. Start location information.
  • runtime decoding configuration table is generated by:
  • Reading the document to be decoded selecting the message of each interface application and related AVP information according to the extended Bacchus formula rule of the Diameter protocol, and converting the application message and related AVP information into a standard file;
  • Diameter protocol data configuration management process to read the binary code stream in the memory area, and converting the binary code stream into a decoding configuration table according to a message composition format
  • the data read from the decoding configuration table is reorganized into a runtime decoding configuration table according to the application supported by the project using the Diameter protocol process.
  • the network management system When the AMS adjustment command is received by the foreground, the network management system notifies the Diameter protocol data configuration management process to modify the decoding configuration table, and after the modification of the decoding configuration table is completed, the related modification is performed by using the Diameter protocol process. Partial synchronization to the runtime decoding configuration table.
  • the invention also provides an apparatus for adaptive coding, comprising:
  • An encoding message receiving unit configured to receive application related information to be encoded, read a message structure of the application related information, and acquire related information of the AVP;
  • a first AVP configuration information acquiring unit configured to search a pre-generated runtime coding configuration table according to the AVP related information acquired by the encoding message receiving unit, and obtain AVP configuration information corresponding to the AVP related information;
  • a coding unit configured to perform legality verification on the AVP related information according to the AVP configuration information, and when the related information of the AVP is legal, organize a Diameter message code according to the application related information and the AVP related information. flow.
  • the invention also provides an apparatus for adaptive decoding, comprising: a decoding message receiving unit, configured to receive a Diameter message code stream to be decoded, and parse the code stream header information to obtain a related parameter required for decoding;
  • a second AVP configuration information acquiring unit configured to search a pre-generated runtime decoding configuration table according to the related parameters acquired by the decoding message receiving unit, to obtain AVP configuration information
  • a decoding unit configured to perform validity verification on the AVP code stream in the Diameter message code stream according to the AVP configuration information, and fill in the AVP related information corresponding to the AVP code stream when the AVP code stream is legal
  • the AVP information calculated according to the AVP configuration information and the relevant parameters required for decoding is stored in an absolute position.
  • the present invention has the following advantages:
  • the method provided by the invention can flexibly generate a runtime codec configuration table according to an existing standard document, and the configuration table can adapt different application requirements in codec processing according to different items, avoiding conflicts of applications, and improving the editing.
  • the reusability of the core components of the decoding process facilitates the expansion of new Diameter applications.
  • the present invention also solves the problem of distinguishing between the message structures without causing confusion between message structures in the case of supporting multiple applications with the same Diameter message code.
  • FIG. 1 is a schematic diagram of a codec working principle of simultaneously supporting the same Diameter message in multiple applications in the prior art
  • FIG. 2A is a flowchart of an adaptive coding method provided by the present invention.
  • 2B is a flowchart of an adaptive decoding method provided by the present invention.
  • FIG. 3 is a flowchart of acquiring a codec configuration table in a runtime according to an embodiment of the present invention
  • 4 is a flowchart of dynamically adjusting a codec configuration table in a running manner according to an embodiment of the present invention
  • FIG. 5 is a schematic diagram of an operation principle of an adaptive codec according to an embodiment of the present invention
  • FIG. 6 is a flowchart of adaptive coding in an embodiment of the present invention.
  • FIG. 8 is a structural diagram of an adaptive coding apparatus according to the present invention.
  • FIG. 9 is a structural diagram of an adaptive decoding apparatus according to the present invention. detailed description
  • the codec process cannot adapt to different applications, different interfaces, different Diameter messages, different vendor definitions, different versions, and the like, thereby resulting in inflexible message definition and conflicts.
  • the core idea of the coding/decoding method and device is to define a corresponding runtime codec configuration table according to the requirements of each application.
  • the configuration table can be dynamically acquired and dynamically adjusted, and the codec configuration data and the specific application interface are effectively realized.
  • the codec is automatically separated.
  • an adaptive coding method provided by the present invention specifically includes the following steps:
  • Step S2A01 Receive application related information to be encoded, read a message structure of the application related information, and acquire related information of the AVP.
  • the application related information includes: an application ID number, a Diameter message code, a Diameter message length, a message structure to be encoded, and a start location information.
  • Step S2A02 Search for a pre-generated runtime code according to the obtained information about the AVP.
  • the configuration table obtains the AVP configuration information corresponding to the AVP related information.
  • the runtime coding configuration table includes: configuration information of the application, configuration information of the Diameter message, and configuration information of the AVP.
  • runtime coding configuration table is specifically generated by:
  • the Diameter protocol data configuration management process is notified to modify the coding configuration table, and after the modification of the coding configuration table is completed, the related modification part is synchronized to the operation by using the Diameter protocol process. Time code configuration table.
  • Step S2A03 Perform legality verification on the AVP related information according to the AVP configuration information.
  • the AVP related information is legal
  • the Diameter message code stream is generated according to the application related information and the AVP related information.
  • the generating the Diameter message code stream according to the application related information and the AVP related information is specifically implemented by: generating a Diameter message header code stream according to the application related information, and generating an AVP code stream according to the AVP related information, and the Diameter is generated.
  • the message header stream and all AVP streams are combined into a Diameter message stream.
  • the present invention further provides an adaptive decoding method. As shown in FIG. 2B, the method includes the following steps: Step S2B01: After receiving a Diameter message code stream to be decoded, parsing the code stream header signal Information, get the relevant parameters required for decoding.
  • the relevant parameters required for decoding include: an application ID, a Diameter message code, a Diameter message length information, a Diameter message code stream start position information, and a decoded message structure storage start position information.
  • Step S2B02 Search for a pre-generated runtime decoding configuration table according to the obtained related parameters, and obtain AVP configuration information.
  • the runtime decoding configuration table is specifically generated by:
  • the Diameter protocol data configuration management process is notified to modify the decoding configuration table. After the modification of the decoding configuration table is completed, the Diameter protocol process synchronizes the relevant modification part to the runtime decoding configuration table. .
  • Step S2B03 Perform validity verification on the AVP code stream in the Diameter message code stream according to the AVP configuration information.
  • the AVP code stream is legal, fill in the AVP related information corresponding to the AVP code stream to the AVP configuration information according to the AVP configuration information.
  • the AVP information calculated by the parameter stores the absolute position.
  • the codec method provided by the invention can flexibly generate a runtime codec configuration table according to an existing standard document, and the configuration table can adapt to different coding and decoding processes according to different items. With the requirement, the conflicts of various applications are avoided, the reusability of the core components of the codec processing is improved, and the new Diameter application is facilitated. At the same time, the present invention also solves the problem of distinguishing between the message structures without causing confusion between message structures in the case of supporting multiple applications with the same Diameter message code.
  • a method for generating a runtime codec configuration table used in the adaptive codec process is described in detail. As shown in FIG. 3, a runtime codec is generated according to an embodiment of the present invention.
  • the configuration table flowchart includes the following steps:
  • Step S301 Scan an RFC/3GPP document that needs to be codec according to an extended Bacchus paradigm (ABNF) rule of the Diameter protocol, and convert an application message conforming to the rule into a standard file, such as an Extensible Markup Language (XML). )file.
  • ABNF extended Bacchus paradigm
  • XML Extensible Markup Language
  • Step S302 Continue scanning the document, and convert related AVP information conforming to the ABNF rule into a standard file, such as an XML file.
  • Step S303 The Operations Maintenance Center (OMC) performs the Diameter protocol validity check according to the generated XML format file. If the validity check is passed, the process continues to step S305; otherwise, step S304 is performed. .
  • OMC Operations Maintenance Center
  • Step S304 When the validity check fails, there may be some AVP definitions that have been defined in other documents that the protocol depends on. At this time, the XML implementation file of the AVP definition is already existing by reference or the AVP definition is manually added, and then returned. Step S303.
  • step S305 the OMC transmits the XML file to the version running in the foreground of the network management system.
  • the XML file is transmitted to the foreground version in two ways. First, if the front board restarts, the OMC is not required to perform data transmission. In this case, the database needs to be able to record the XML configuration.
  • the file at this point, the step is specifically performed as follows: (1) OMC stores the XML file in a binary format into the network management system database;
  • the network management system database synchronizes the XML binary code stream to the foreground data receiving process
  • the foreground Diameter protocol process reads the XML binary code stream from the foreground data receiving process, and stores the XML binary code stream in the foreground memory area.
  • the OMC synchronizes the XML binary stream to the foreground data receiving process.
  • the foreground Diameter protocol process reads all the packets of the XML binary stream from the foreground data receiving process, reassembles the XML binary stream, and stores the XML binary stream in the foreground memory area.
  • Step S306 The Diameter protocol data configuration management process reads the XML binary code stream in the foreground memory area and converts it into a codec configuration table according to the message composition format.
  • Step S307 The Diameter protocol process re-organizes the data from the codec configuration table into a runtime codec configuration table according to the application supported by the project. It should be noted that the runtime codec configuration table is used as a configuration source for protocol check, encoding, and decoding in subsequent codec.
  • the foregoing running codec configuration table includes: configuration information of the application, configuration information of the Diameter message, and configuration information of the AVP.
  • the configuration information of the application includes a Diameter message type included in the application;
  • the configuration information of the Diameter message includes: the header information of the Diameter message, the application, the project information, and the AVP type, number, relative location, whether it is mandatory, and whether it is optional.
  • the configuration information of the AVP includes: the header information of the AVP, the application, the item information, and the vendor identifier. If the AVP is a combination type, it also includes its sub-AVP type, number, relative position, whether it is mandatory, or whether it is available. Select information.
  • the above is the acquisition process of the runtime codec configuration table of the adaptive codec of the present invention
  • the configuration table can be customized according to the actual needs of each operator, each application interface, and the project, and the foreground running program does not need to be modified or adapted, effectively meeting the needs of the actual application without losing flexibility.
  • the runtime codec configuration table provided by the embodiment of the present invention can also be dynamically adjusted according to the actual environment needs, mainly according to the actual needs of different central offices of specific projects.
  • the OMC performs related messages.
  • the dynamic adjustment process is as shown in FIG. 4, and includes the following steps:
  • Step S401 The OMC performs related messages.
  • the adjustment operation command is transmitted to the foreground Diameter protocol process, and the foreground Diameter protocol process notifies the Diameter protocol data configuration management process to perform AVP adjustment.
  • the OMC saves the operation process and data changes to the database process, including:
  • the OMC saves the operation process and data changes to the NMS.
  • the database sends the operation process to the foreground Diameter protocol process to inform the AVP to adjust the situation;
  • the OMC When the AVP is dynamically added, modified, or deleted, the OMC sends the operation directly to the foreground.
  • the details include: When the AVP is dynamically added, modified, or deleted, the OMC sends the operation directly to the foreground Diameter protocol to notify the AVP. Adjust the situation.
  • Step S402 The Diameter protocol data configuration management process modifies the codec configuration table according to the specific content of the AVP adjustment notification.
  • Step S403 The Diameter protocol process synchronizes the relevant modification part to the runtime codec configuration table according to the needs of the specific application item.
  • the above is an implementation step of adjusting the runtime codec configuration table of the adaptive codec of the present invention.
  • the runtime codec configuration table can be obtained, it is necessary to perform small-scale message AVP adjustment according to the actual application requirements of different central offices, so that the application requirements of different operators can be flexibly met.
  • the invention is a powerful codec configuration table for the running codec configuration table of the adaptive codec.
  • the configuration data is automatically separated from the codec of the specific application interface, so that the present invention can implement different operators, different application interfaces, and different actualities according to the dynamic codec configuration.
  • the application needs of the project.
  • the codec process of the adaptive codec provided by the present invention is described in detail below.
  • the working principle of the adaptive codec method provided in this embodiment is shown in FIG. 5, wherein the message structure used by each application is as shown in FIG.
  • the structure includes specific AVPs according to business requirements. These AVPs are organized according to the agreed rules, and the information of an AVP has a fixed offset from the start position of the message header. Before encoding, the relevant AVP information is applied to the relative offset position of the AVP.
  • the adaptive coding process provided by the embodiment of the present invention includes the following steps:
  • Step S601 The application process invokes the encoding interface, and transmits the application related information to be encoded to the codec core component.
  • the application related information includes an application ID number, a Diameter message code, a message structure to be encoded, and a starting position of the message structure.
  • Step S602 The codec core component extracts the AVP from the message structure to be encoded, and obtains related information of the AVP.
  • Step S603 The codec core component searches for a corresponding AVP configuration information in the runtime codec configuration table according to the obtained AVP related information.
  • Step S604 the codec core component 4 checks the legality of the AVP related information acquired in step S602 according to the found AVP configuration information.
  • the legality check includes: Whether the mandatory AVP is assigned; Whether the AVP value is within the specified range;
  • Step S605 the codec core component generates a Diameter message header code stream according to the incoming parameter in step S601; generates an AVP code stream according to the AVP related information acquired in step S602, and finally merges the Diameter message header code stream and all AVP code streams. Divided into a Diameter message stream.
  • the above is the implementation of the adaptive coding in the embodiment of the present invention. Since the query configuration table is included, the AVP related information is obtained from the relative location according to the configuration table, and the message structure of the specific application does not need to be understood, and the extension of the new application is easier.
  • the adaptive decoding process provided by the embodiment of the present invention includes the following steps:
  • Step S701 The application process receives the Diameter message code stream to be decoded, and invokes a message header decoding function provided by the codec core component, and obtains information such as an application ID, a Diameter message code, and a Diameter message length from the Diameter message stream message header.
  • Step S702 The application process invokes the decoding interface, and transmits information about the related information acquired in step S701 and the start position of the Diameter message code stream and the start position of the decoded message structure to the codec core component.
  • Step S703 The codec core component searches the runtime codec configuration table according to the related information, and obtains the AVP configuration information included in the application ID and the Diameter message code, where the configuration information includes:
  • Step S704 The codec core component obtains each AVP code stream from the Diameter message code stream, and performs a legality check according to the AVP configuration information acquired in step S703. Among them, the legality check includes:
  • Step S705 The codec core component calculates the offset n of the relative position of the AVP information according to the AVP configuration information acquired in step S703, and calculates the absolute location of the AVP information storage according to the message structure storage start position m after the parameter decoding in step S702. m+n;
  • the codec core component analyzes each AVP code stream obtained in step S704, obtains the AVP value and the flag bit information, and then fills the obtained message into the absolute position of the calculated AVP information, thereby completing the decoding process.
  • the adaptive decoding implementation step of the present invention Since the query configuration table is included, the relative position of the decoded AVP value is calculated according to the AVP related information in the configuration table, and the message structure of the specific application does not need to be understood, which is easy to extend the new application.
  • the adaptive encoding/decoding method separates the codec configuration data from the codec of the specific application interface, increases the scalability of the protocol implementation, and can perform runtime coding.
  • the dynamic acquisition and dynamic adjustment of the decoding configuration table meet the application requirements of different operators, different application interfaces, and different actual projects.
  • the codec core component By querying the runtime codec configuration table, the codec core component automatically converts between the Diameter message stream and the Diameter application message structure without having to understand the Diameter application message structure.
  • This method of automatic adaptation through query configuration not only increases the reusability of the codec core components, but also improves the scalability of the diameter application message. In the case of supporting multiple applications with the same Diameter message code at the same time, Differentiating according to the configuration does not cause confusion between message structures.
  • the present invention also provides an apparatus for adaptive coding, as shown in FIG. 8, comprising:
  • the coded message receiving unit 810 is configured to receive application related information to be encoded, read a message structure of the application related information, and acquire related information of the AVP;
  • the first AVP configuration information acquiring unit 820 is configured to search the pre-generated runtime coding configuration table according to the information about the AVP obtained by the encoding message receiving unit 810, and obtain the AVP configuration information corresponding to the AVP related information.
  • the coding unit 830 is configured to perform validity verification on the AVP related information according to the AVP configuration information, and organize the Diameter message code stream according to the application related information and the AVP related information when the AVP related information is legal.
  • the application related information includes: an application ID number, a Diameter message code, a Diameter message length, a message structure to be encoded, and a start location information.
  • the present invention also provides an apparatus for adaptive decoding, as shown in FIG. 9, including:
  • the decoding message receiving unit 910 is configured to receive a Diameter message code stream to be decoded, and parse the code stream header information to obtain related parameters required for decoding.
  • the second AVP configuration information acquiring unit 920 is configured to search the pre-generated runtime decoding configuration table according to the related parameters acquired by the decoding message receiving unit 910, and obtain the AVP configuration information.
  • the decoding unit 930 is configured to use the AVP configuration information to the Diameter message.
  • the AVP code stream in the code stream is verified for validity.
  • the AVP information corresponding to the AVP code stream is filled in to the absolute position of the AVP information stored according to the AVP configuration information and the relevant parameters required for decoding.

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Abstract

La présente invention porte sur un procédé de codage auto-adaptatif qui comprend : la réception d'informations codées liées à une application, la lecture dans la structure du message des informations liées à l'application et l'obtention d'informations liées à une paire de valeurs d'attribut (AVP) ; selon les informations liées à l'AVP, la recherche du tableau de configuration préalablement généré de codage de temps d'exécution, et l'obtention des informations de configuration d'AVP correspondant aux informations liées à l'AVP ; selon les informations de configuration d'AVP, l’exécution d'une authentification de validité pour les informations liées à l'AVP et si les informations liées à l'AVP sont licites, conformément aux informations liées à l'application et aux informations liées à l'AVP, l'organisation et la génération d'un flux de code de message Diameter. La présente invention porte également sur un procédé de décodage correspondant au procédé de codage ci-dessus, et sur un appareil de mise en œuvre du procédé ci-dessus. La présente invention améliore le caractère réutilisable du composant principal d’un traitement de codage et de décodage, et facilite l'extension de nouvelles applications Diameter. A condition d'accueillir de multiples applications avec le même code de message Diameter, la différentiation est effectuée selon la configuration, de telle sorte qu'il ne se produira pas de problème de confusion entre les structures de message.
PCT/CN2010/074029 2009-08-06 2010-06-17 Procédé et appareil de codage et décodage auto-adaptatifs WO2011015089A1 (fr)

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CN101001159A (zh) * 2006-12-30 2007-07-18 华为技术有限公司 一种解码方法和解码器
CN101001160A (zh) * 2006-12-30 2007-07-18 华为技术有限公司 一种编码方法和编码器
CN101237383A (zh) * 2007-01-31 2008-08-06 华为技术有限公司 一种传输组播信息及授权组播业务的方法和系统
CN101631126A (zh) * 2009-08-06 2010-01-20 中兴通讯股份有限公司 一种自适应编码/解码方法和装置

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CN107171879A (zh) * 2016-03-07 2017-09-15 中国移动（深圳）有限公司 一种在线计费接口消息的检测方法及装置
CN107171879B (zh) * 2016-03-07 2020-01-07 中移信息技术有限公司 一种在线计费接口消息的检测方法及装置

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