• 제목/요약/키워드: internet traffic data

검색결과 599건 처리시간 0.026초

Mobile IPv6망에서 DiffServ 와 매체접근 우선권을 이용한 QoS에 관한 연구 (The Study of QoS Using DiffServ and MAC Priority in Mobile IPv6 Network)

  • 손성찬;오정균
    • 정보통신설비학회논문지
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    • 제7권1호
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    • pp.33-39
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    • 2007
  • Recently there are increasing needs for Internet and various kinds of contents. These traffics for various contents need more amount of data to provide high-quality information and require various QoS depending on the characteristics of contents. However, current Internet service supports BE (Best Effort) service only, therefore IntServ (Integrated Service) scheme and DiffServ (Differentiated Service) scheme are represented to support QoS in IP layer. This paper describes new scheme that provides QoS taking into account the traffic characteristics over Mobile IPv6 network based on IEEE 802.11e by decreasing signal process time using traffic class of DiffServ and MAC and evaluates the performance through computer simulation.

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IEEE 802.11e기반 Mobile IPv6망에서 DiffServ를 이용한 신호처리 성능에 관한 연구 (The Study of Signal Processing Performance using DiffServ in Mobile IPv6 Network Based on IEEE 802.11e)

  • 손성찬;조경철;조병학
    • 한국정보통신설비학회:학술대회논문집
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    • 한국정보통신설비학회 2005년도 하계학술대회
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    • pp.338-341
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    • 2005
  • Recently there are increasing needs for Internet and various kinds of contents. These traffics for various contents need more amount of data to provide high-quality information and require various QoS depending on the characteristics of contents. However, current Internet service supports BE (Best Effort) service only, therefore IntServ (Integrated Service) scheme and DiffSserv (Differentiated Service) scheme are represented to support QoS in IP layer. This paper describes new scheme that provides QoS taking into account the traffic characteristics over Mobile IPv6 network based on IEEE 802.11e by decreasing signal process time using traffic class of DiffServ and evaluates the performance through computer simulation.

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한국 청소년의 성희롱 관련요인에 대한 조사연구 (The Study on the Variable related to the Sexual Harassment among the Korean Adolescents)

  • 김영혜;이화자;정은순;김이순
    • Child Health Nursing Research
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    • 제8권1호
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    • pp.77-85
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    • 2002
  • Recently in Korea, the adolescents' sexual problems including sexual violence have increased, and those phenomena have escalated to be one of the major social issues. This study was conducted to identify the variables related to the sexual harassments of the Korean adolescents. The variables to which the subjects belong were gender, school grade, religion, extracurricular activity, amount of pocket money, school performance traffic mean to school, ownership of PC, internet contact frequency and place, contact to pornography, heterosexual friend, drinking, and smoking. The period of survey was from July 2000 to Dec. 2000. The subjects were 475 middle and high-schoolers in Busan and Kyung-Nam. The instrument to measure sexual harassments of the subjects was questionnaire. That was gained by modifying the three patterns(physical, verbal and visual) in the manual provide by the Ministry of Labor(1999). The degree of sexual harassments was measured by 4-point Likert scale. The collected data was analyzed with t-test and ANOVA by SPSS win(10.0). The findings were as follows ;1. The variables related to the physical harassment were gender, age, pocket money, perceived school performance, traffic means, contact to pornography, having heterosexual friend, experience of drinking and smoking.2. The variables related to the visual harassments were gender, age, perceived school performance, traffic mean, internet contact, contact to pornography, having heterosexual friend, experience of drinking & smoking.3. The variables related to the verbal harassments were gender, age, pocket money, perceived school performance, traffic mean, internet contact, contact to pornography, having heterosexual friend, and experience of drinking & smoking.

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인터넷상에서의 실시간 주문형 비디오 설계 및 구현 (A Design and Iplementation of Real Time Video on Demand on Internet)

  • 이종철;탁영봉
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 1998년도 추계종합학술대회 논문집
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    • pp.7-10
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    • 1998
  • In implementing real time video on demand(VOD), the increase of user on internet causes a network traffic congestion. In this paper, we programmed a CGI able to login in VOD home for limiting the number of user in solving the problem, and also applied and adaptive multimedia synchronization technique for controlling video and audio data in a network. In addition, a real time multimedia player was designed and implemented in a personal computer operating at Window95/98/NT.

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SNMP 기반의 효율적인 데이터 수집 방식에 대한 연구 (A Study on the Efficient Polling Architecture Design for SNMP)

  • 윤병수;김채영
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 2002년도 하계종합학술대회 논문집(1)
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    • pp.271-274
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    • 2002
  • This paper presents tile efficient polling architecture for simple network management protocol (SNMP). Now a day, tile internet traffics have been increasing rapidly within a few years as the subscriber's network to connect internet is provided commonly. With this trend, the network management traffics also make the same phases. To provide numerous higher Quality services to the customers, the management traffic must be controlled within the permitted limit. This paper proposes the policy-based felling architecture for SNMP MIB with several parameters and suggests the data collecting layer architecture for the efficient polling.

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웹기반 대중교통 안내시스템 설계 및 구현 (Design and Implementation of a Web-based Public Transportation Guidance System)

  • 배수강;이승룡;최대순;정태충;승현우
    • 한국정보과학회논문지:컴퓨팅의 실제 및 레터
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    • 제5권4호
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    • pp.426-439
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    • 1999
  • 본 논문에서는 웹(World Wide Web)에서 사용자가 손쉽고 편리하게 이용할 수 있는 멀티미디어 대중교통 안내시스템 개발 경험을 소개한다. 개발된 시스템은 클라이언트와 서버 시스템, 경로탐색 시스템, 교통정보 저장 시스템, 노선 및 정류장 관리 시스템으로 구성되어 있다. 클라이언트에서 작동되는 사용자 인터페이스는 직관적으로 이해가 쉽고, 사용이 편리하며 인터액티브한 멀티미디어 대중 교통안내 서비스를 제공한다. 서버 시스템은 교통정보 수집 시스템으로부터 입력되는 데이타와, 경로탐색 시스템, 교통정보 저장 시스템과 연동되어 클라이언트의 요구사항을 처리하고 그 결과를 사용자에게 돌려준다. 수정된 A* 알고리즘을 이용하는 경로탐색 시스템은 최적경로를 탐색하며, 교통정보 저장 시스템은 현재 교통상황, 정류장, 노선, 지도 등의 정보를 저장한다. 노선 및 정류장 관리시스템은 시스템 관리자가 노선 또는 정류장 관리를 서버 화면의 지도상에서 효율적으로 수행할 수 있는 도구이다. 본 논문에서 다루는 대중교통 안내시스템은 Java로 구현하였기 때문에 확장과 이식이 용이하며, 시스템 유지보수 비용이 적게 드는 장점을 가지고 있다. 그리고, 웹 브라우저가 동작되는 환경에서는 어디서나 쉽게 접근이 가능하며 향후 구축될 Intelligent Transportation Systems(ITS)의 한 모듈로써 바로 작동될 수 있을 뿐만 아니라, 현재 인터넷상에서 제공되는 다양한 서비스와도 연동이 가능하다.Abstract This paper introduces our experience for developing a public transportation guidance system, which facilitates the World-Wide Web(WWW) to provide users with easier access and use. The proposed system is composed of four subsystems: client/server system, path search system, traffic data storage system, and traffic raw-data management system. The user interface in clients utilizes Java to furnish users with multimedia data accessibility and interactivity. The server processes clients' requests based on the traffic data coming from remote sensing devices and interacts with the path search system and traffic data storage system to provide users with the results. The path search system, which uses a modified A* algorithm, produces optimal solutions based on dynamic traffic data. The traffic data storage system stores the current traffic information together with the geographical information about the b$us_way routes. The traffic raw-data management system is a graphical user interface which enables the system manager to handle the traffic information easily on the map in the terminal screen. The system has considerable benefits such as portability, scalability, and flexibility since it is implemented using Java. Also, it can be extended to an integrated Intelligent Transportation Systems(ITS) which includes a variety of information on the Internet as well as traffic information.n.

IoT 환경에서 서버 대역폭과 네트워크 트래픽을 고려한 스무딩 알고리즘 (Smoothing Algorithm Considering Server Bandwidth and Network Traffic in IoT Environments)

  • 이면재
    • 사물인터넷융복합논문지
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    • 제8권1호
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    • pp.53-58
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    • 2022
  • 스무딩은 가변 비트율로 저장된 비디오 데이터를 고정 비트율로 변환하는 전송 계획이다. [6,7]의 연구에서는 전송률 증가가 요구되는 되는 경우에 증가량이 가장 적은 프레임을 새로운 전송률 구간의 시작 프레임으로 설정하고, 전송률 감소가 요구되는 경우에 감소량이 가장 큰 프레임을 새로운 구간의 시작 프레임으로 설정하는 스무딩 알고리즘을 제안하고 네트워크 트래픽이 고려되지 않는 환경에서 성능을 평가하였다. 본 논문에서는 [6,7]의 스무딩 알고리즘을 네트워크 트래픽을 고려한 환경에서 E.T 90 비디오 데이터로 512KB부터 32MB까지 최소 재생률, 평균 재생률, 재생률 변화량으로 적응적인 CBA 알고리즘과 성능을 평가한다. 비교 결과, [6,7]의 스무딩 알고리즘은 최소 재생률 비교에서 우수함을 보였다.

The TOR Data Communication System

  • Haraty, Ramzi A.;Zantout, Bassam
    • Journal of Communications and Networks
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    • 제16권4호
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    • pp.415-420
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    • 2014
  • Since the day the Internet became a common and reliable mechanism for communication and data transfer, security officers and enthusiasts rallied to enforce security standards on data transported over the globe. Whenever a user tries communicating with another recipient on the Internet, vital information is sent over different networks until the information is dropped, intercepted, or normally reaches the recipient. Critical information traversing networks is usually encrypted. In order to conceal the sender's identity, different implementations have proven successful - one of which is the invention of anonymous networks. This paper thoroughly investigates one of the most common and existing techniques used during data communication for avoiding traffic analysis as well as assuring data integrity - the onion router (TOR). The paper also scrupulously presents the benefits and drawbacks of TOR.

AP-SDN: Action Program enabled Software-Defined Networking Architecture

  • Zheng Zhao;Xiaoya Fan;Xin Xie;Qian Mao;Qi Zhao
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • 제17권7호
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    • pp.1894-1915
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    • 2023
  • Software-Defined Networking (SDN) offers several advantages in dynamic routing, flexible programmable control and custom application-driven network management. However, the programmability of the data plane in traditional SDN is limited. A network operator cannot change the ability of the data plane and perform complex packet processing on the data plane, which limits the flexibility and extendibility of SDN. In the paper, AP-SDN (Action Program enabled Software-Defined Networking) architecture is proposed, which extends the action set of SDN data plane. In the proposed architecture, a modified Open vSwitch is utilized in the data plane allowing the execution of action programs at runtime, thus enabling complex packet processing. An example action program is also implemented which transparently encrypts traffic for terminals. At last, a prototype system of AP-SDN is developed and experiments show its effectiveness and performance.

IP기반 이동네트워크에서 실시간 비디오 트래픽 전송 메카니즘에 관한 연구 (A Research on The Real Time Video Traffic Transmission Mechanism in IP Based Mobile Networks)

  • 강문식;이준호
    • 한국통신학회논문지
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    • 제29권8A호
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    • pp.879-888
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    • 2004
  • 본 논문에서는 이동성 IP기반 네트워크의 혼잡노드에서 MPEG 비디오 트래픽의 효율적인 전송을 위하여 QoS를 고려한 실시간 비디오 트래픽 전송기법을 제안한다. 최근의 인터넷 사용의 확산으로 실시간 멀티미디어 서비스의 요구가 급증되고 있다. 하지만 인터넷 서비스형태는 최선형 전송기법을 제공하기 때문에, 모든 형태의 차등적 COS 트래픽을 처리하기에 어려움이 있다. 일반적으로 MPEG 데이터 계층적 코딩 기법은 이동프레임의 예측에 대한 참조 프레임을 사용하는데, 이러한 참조 프레임의 손실은 비트손실로 인한 연속적인 패킷 손실로 연계될 수 있어서 비디오 트래픽의 품질을 저하시킨다. 따라서 본 논문에서는 기존의 기법들을 분석하여 QoS를 고려한 실시간 비디오 트래픽 전송기법에 대한 연구를 수행하였다. 컴퓨터 시뮬레이션을 수행하여 제안된 기법의 성능을 분석한 결과 그 성능이 개선됨을 확인하였다.