KR100679895B1 - Ubiquitous Contents Service Quality Probe Method And System - Google Patents

Abstract

The present invention provides a method for setting a network environment and a device environment suitable for a specific ubiquitous service for which service quality is to be measured, and an XML file type and a diagnosis protocol definition for a diagnostic protocol and a diagnosis scenario which are stored in correspondence with the ubiquitous service. Generating and outputting a scenario definition XML file, interpreting the diagnostic protocol definition XML file and the diagnostic scenario definition XML file, and generating a service request packet according to the analysis result and outputting the service request packet to a ubiquitous service provider through a network. And analyzing a service response transmitted from the ubiquitous service provider to the service request, and outputting the analysis result as service quality measurement data. Law provides a system for implementing it.

Ubiquitous, Quality of Service Measurement, Protocol Parser

Description

Ubiquitous Contents Service Quality Probe Method And System

1 is a view schematically showing a network system configuration to which the present invention is applied;

2 is a diagram schematically illustrating a system configuration to which a service quality measurement method is applied in a ubiquitous environment according to the present invention;

FIG. 3 is a diagram schematically illustrating a system configuration for measuring video and music streaming content service quality provided in a ubiquitous environment by applying a service quality measuring method in a ubiquitous environment according to the present invention.

<Description of Symbols for Main Parts of Drawings>

100: ubiquitous service provider 200: network

300: ubiquitous service user 310: streaming terminal

314: RTP / UDP / IP Module 316: MPEG-4 Decoder

318 video / audio frame buffer

400: Ubiquitous Service Quality Measurement System

410: network environment simulator

420: ubiquitous device simulator 430: response analyzer

440: diagnostic protocol definition XML file generator 450: diagnostic scenario definition XML

460: Protocol Definition XML Parser 470: Packet Generator

480: Video file storage unit 500: Measurement data management system

The present invention relates to a method and system for measuring quality of service in a ubiquitous environment. The present invention relates to a quality measurement index according to service protocols and content characteristics in various ubiquitous environments for measuring service quality from a user's point of view for various services provided in a ubiquitous environment. The present invention relates to a method and system for measuring service quality in a supporting ubiquitous environment.

Currently, services and contents provided under the ubiquitous computing environment have different quality of service metrics according to their data characteristics and network transmission environment. In addition, various user terminal environments vary according to hardware performance and network environment.

The existing quality measurement method for guaranteeing service quality is a network quality measurement oriented method mainly through network quality measurement between service ends and network sections. However, this method has limitations in measuring service quality from the user's point of view, considering the terminal performance and network environment in the various services in the ubiquitous environment and the end user environment. In order to measure quality in various user terminal environments, a method of mounting a measurement agent on a user terminal, a method of installing a user-defined quality measurement module provided by a service provider, and the like before the step of providing an actual service to a user It is practically inefficient to measure the quality of service quality guarantee.

Service monitoring methods for guaranteeing the quality of service are classified into active monitoring and passive monitoring.

The active monitoring method is a method of measuring delay, jitter, loss, and available bandwidth between service quality measurement intervals using a probe packet. The advantage of active monitoring is that the measurement packets are small, which means less load on the network and systems. The disadvantage is that there are differences from the actual traffic conditions.

Passive monitoring is a method of measuring the traffic of a real user without generating a measurement packet. The measured data provides the actual traffic conditions, but the disadvantage is that the system is heavily loaded because of the large packet size to be measured.

In addition to the network quality measurement method, the quality measurement method from the user's point of view includes a quality measurement module provided by the service provider in the user terminal and directly measures the quality of the user terminal and a quality measurement agent in the user terminal itself. To measure the quality of service. However, the limitation of these methods is the method of focusing on the service quality measurement itself, and the quality measurement method of the nature of reference materials for quality assurance according to different user environment and service characteristics.

Accordingly, the present invention has been made to solve the above-described problems of the prior art, and the quality measurement index according to the service protocol and content characteristics in various ubiquitous environments for measuring the service quality from the user's point of view for various services provided in the ubiquitous computing environment. Its purpose is to provide a service quality measurement method in a ubiquitous environment that supports.

In addition, the present invention measures the quality measurement index of each service and content considering various user terminal environment, network environment, etc. before the service provider / content provider distributes to the actual user under the ubiquitous computing environment, and various virtual user quality. Another object is to provide a service quality measurement system in a ubiquitous environment that enables measurement of the environment.

In order to achieve the above object, a service quality measurement method in a ubiquitous environment according to the present invention includes setting a network environment and a device environment suitable for a specific ubiquitous service for which service quality is to be measured, and correspondingly corresponding to the ubiquitous service. Generating and outputting the stored diagnostic protocol and diagnostic scenario in the form of a diagnostic protocol definition XML file and a diagnostic scenario definition XML file, and interpreting the diagnostic protocol definition XML file and the diagnostic scenario definition XML file and analyzing the results Generating a service request packet and outputting the service request packet to a ubiquitous service provider through a network; and analyzing a service response transmitted from a ubiquitous service provider with respect to the service request, and analyzing the service result. It comprises the step of outputting a.

In addition, the service quality measurement system in the ubiquitous environment according to the present invention to achieve the above object, the network environment simulator for providing various types of network environment by adjusting the bandwidth of the network, and to provide various kinds of device environment Ubiquitous device simulator, diagnostic protocol definition XML file generator that generates and outputs diagnostic protocol definition XML file format to measure service quality, and diagnostic scenarios that are preset to measure service quality A diagnostic scenario definition XML file generator for generating and outputting the diagnostic scenario definition XML file, a protocol definition XML parser for interpreting the diagnostic protocol definition XML file and the diagnostic scenario definition XML file, and an analysis result in the protocol definition XML parser. on Therefore, the packet generator generates a service request packet according to the output command and outputs the packet to the ubiquitous service provider through the network, and analyzes the service response transmitted from the ubiquitous service provider for the service request, and analyzes the service quality measurement data. It comprises a response analyzer that outputs as.

Hereinafter, a method and system for measuring a quality of service in a ubiquitous environment according to a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a network system configuration to which the present invention is applied.

Ubiquitous computing does not add any function to a computer, but rather means an information technology environment or information technology paradigm that enables communication by inserting a computer into any device or object such as a car, a refrigerator, glasses, a clock, or a stereo equipment. . In such a ubiquitous computing environment, as shown in FIG. 1, the provider 100 of content or service including games, movies, music, etc. may include a communication network using a wired / wireless telephone network / satellite, a broadcasting network using terrestrial / satellite / cable, and Providing various types of content or services to the service user 300 through a user terminal such as a mobile phone, set-top box, vending machine, PDA, game machine, PC, car navigation, HDTV, etc. do.

If ubiquitous is made, information technology can be used not only in homes and cars but even on the top of the mountain, and the number of service users connected to the network will increase, thereby increasing the size and scope of the information technology industry. In order to achieve such a ubiquitous network, service quality must be guaranteed. In the present invention, a ubiquitous service quality measurement system for measuring a service quality provided by a content and a service provider on a network is constructed.

2 is a diagram schematically illustrating a system configuration to which a service quality measurement method is applied in a ubiquitous environment according to the present invention.

As shown in the figure, the ubiquitous service quality measurement system of the present invention is a network environment simulator 410, ubiquitous device simulator 420, response analyzer 430, diagnostic protocol definition XML file generator 440, diagnostics A scenario definition XML file generator 450, a protocol definition XML parser 460, and a packet generator 470 are configured.

The network environment simulator 410 adjusts the bandwidth of the network to provide various quality measurement environments to provide various types of network environments, and the ubiquitous device simulator 420 provides CPU and memory to provide various user terminal environments. It provides various kinds of device environment by adjusting settings.

The diagnostic protocol definition XML file generator 440 generates and outputs a preset diagnostic protocol in the form of a diagnostic protocol definition XML file in order to measure service quality, and the XML scenario generator 450 of the diagnosis scenario definition generates a service quality. To measure, create and output the preset diagnostic scenario in the form of XML file of diagnosis scenario definition.

The protocol definition XML parser 460 generates a diagnostic protocol definition XML file from the diagnostic protocol definition XML file generator 440 and a diagnostic scenario definition XML file from the diagnostic scenario definition XML file generator 450 for generating a service protocol. The packet generator 470 generates a service request packet according to the command output according to the analysis result of the protocol definition XML parser 460 and outputs the service request packet to the ubiquitous service provider 100 through the network.

The response analyzer 430 analyzes a service response transmitted from the ubiquitous service provider 100 with respect to the service request, and outputs the analysis result as service quality measurement data.

In addition, the ubiquitous service quality measurement system may include a measurement data management system 500 including a measurement data collector 510 for collecting data measured by a measurement device through a network and a data storage 520 for storing the data. Can be.

In the ubiquitous service quality measurement system of the present invention configured as described above, the ubiquitous service quality is measured by a service quality measurement method in a ubiquitous environment having the following procedure.

That is, 1) network environment and device environment suitable for a specific ubiquitous service for which service quality is to be measured are set through the network environment simulator 410 and the ubiquitous device simulator 420, respectively.

Thereafter, 2) the diagnostic protocol definition XML file generator 440 and the diagnostic scenario definition XML file generator 450, respectively, for pre-determined diagnostic protocols and diagnostic scenarios corresponding to the ubiquitous service, are defined in the XML protocol format and diagnostic scenario. Generate and output in the form of a definition XML file (S1).

3) The protocol definition XML parser 460 and the packet generator 470 interpret the diagnostic protocol definition XML file and the diagnostic scenario definition XML file and generate a service request packet according to the analysis result. Output to the ubiquitous service provider 100 (S2).

Thereafter, 4) the service response S3 transmitted from the ubiquitous service provider 100 to the service request is analyzed by the response analyzer 430 to output the analysis result as service quality measurement data (S4).

As described above, when the above steps 1) to 4) are performed while changing various parameters for a specific ubiquitous service, the present invention measures service quality from a user's point of view for various services provided in a ubiquitous computing environment. For this purpose, quality indicators can be supported according to service protocols and content characteristics in various ubiquitous environments.In addition, various user terminal environments and network environments are considered before the service providers / content providers distribute them to actual users under ubiquitous computing environments. It is possible to measure the quality measurement indicators of the services and contents of the service, and to measure the various virtual user quality environments.

FIG. 3 is a diagram schematically illustrating a system configuration for measuring video and music streaming content service quality provided in a ubiquitous environment by applying a service quality measuring method in a ubiquitous environment according to the present invention.

First, as described with reference to FIG. 2, for example, a request for streaming playback of a specific video file is requested to the service provider 100 through the packet generator 470 (S1 and S2).

Thereafter, the service provider 190 providing the video and the music streaming content received the play request outputs the corresponding video stored in the video file storage 110 under the control of the session manager 1300 to output the video / audio frame buffer 120. ) And the RTP / UDP / IP module 140 converts the output video into packet data suitable for network characteristics and outputs it through the network (S3).

The video streaming data output as described above is received through the RTP / UDP / IP module 314 of the virtual service user terminal 310 installed at the front end of the measurement system 400 and received from the session manager 312. After depacketizing according to the control of the data, the data is decoded by the MPEG4 decoder 316 and then transmitted to the response analyzer 430 of the measurement system 400.

Therefore, the response analyzer 430 analyzes the service response transmitted from the ubiquitous service provider 100 that provides the video and music streaming content, and outputs the analysis result as service quality measurement data.

On the other hand, the present invention is not limited to the above specific embodiments, but can be modified and modified in various ways without departing from the gist of the present invention.

As described above, according to the present invention, in order to measure service quality from the user's point of view, various metrics provided in the ubiquitous computing environment can support quality measurement indexes according to service protocols and content characteristics in various ubiquitous environments, and also ubiquitous computing Under the environment, the service provider / content provider can measure the quality measurement index of each service and content considering the various user terminal environment, network environment, etc., and measure the various virtual user quality environment before deploying to the actual user. Can be.

In addition, the present invention can measure the service quality of various services and contents in a ubiquitous computing environment from the user's point of view, thereby making it possible to measure a more reliable service quality, and to measure the service usage threshold in the stage before service provision and content distribution. It is also possible to use the furnace.

Claims (3)

Setting a network environment and a device environment suitable for the ubiquitous service to measure the quality of service among various ubiquitous services provided in the ubiquitous environment, Generating and outputting the pre-stored diagnostic protocols and diagnosis scenarios in the form of an XML file of the diagnostic protocol definition and an XML file of the diagnostic scenario definition, respectively, corresponding to the ubiquitous service; Parsing the diagnostic protocol definition XML file and the diagnostic scenario definition XML file and generating a service request packet according to the interpretation result and outputting the service request packet to a ubiquitous service provider through a network; And analyzing the service response transmitted from the ubiquitous service provider with respect to the service request and outputting the analysis result as service quality measurement data. Network environment simulator that provides various types of network environment by adjusting network bandwidth, Ubiquitous device simulator that provides a variety of device environment, A diagnostic protocol definition XML file generator for generating and outputting a preset diagnostic protocol in the form of a diagnostic protocol definition XML file for measuring service quality; A diagnostic scenario definition XML file generator for generating and outputting a preset diagnostic scenario in order to measure service quality in the form of a diagnostic or XML definition; A protocol definition XML parser for interpreting the diagnostic protocol definition XML file and the diagnostic scenario definition XML file; A packet generator for generating a service request packet according to a command output according to a result of interpretation by the protocol definition XML parser and outputting the service request packet to a ubiquitous service provider through a network; And a response analyzer for analyzing the service response transmitted from the ubiquitous service provider and outputting the analysis result as service quality measurement data with respect to the service request. The method of claim 2, And a measurement data collector for collecting the measured data and a data storage for storing the data.

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