Nowadays, an increasing number of users get high-speed broadband access to the Internet. These broadband connections make new multimedia applications possible. However, such applications also introduce new Quality of Service (QoS) requirements to the network. Particularly, they require an assured bandwidth even in the case of network overload. The network itself has to provide such bandwidth assurances. This article introduces our concept of a novel network QoS device being located in network edge nodes. It provides a solution for relaxed QoS guarantees to certain flows on a congested link by focussing packet discard on selected flows. However, unlike for IntServ solutions like RSVP, our approach only requires minimal signalling and therefore provides both efficiency and scalability. We furthermore provide a quantitative performance evaluation of our QoS device by using simulations.
목차
Abstract 1. Introduction 2. Our QoS Device Concept 3. Implementation Notes 3.1. Flow Identification and Marking 3.2. Using Mechanisms for Explicit Congestion Notification 3.3. Coping with the Loss of Start Packets 3.4. Handling of Best Effort Flows 3.5. Security Considerations 4. The Simulation Model and its Performance Metrics 5. Performance Analysis 5.1. A Proof of Concept 5.2. MP3 Flows Scenario 5.3. Adapting the Drop Window Size 5.4. Heterogeneous Multimedia Flows 5.5. Avoiding Guaranteed Area Losses 6. Conclusions References
키워드
Quality of ServiceBroadband InternetFlow RoutingMultimediaIntelligent Packet Discard
저자
Wenyu Zhu [ University of Duisburg-Essen, Institute for Experimental Mathematics Ellernstrasse 29, 45326 Essen, Germany ]
Thomas Dreibholz [ University of Duisburg-Essen, Institute for Experimental Mathematics Ellernstrasse 29, 45326 Essen, Germany ]
Erwin P. Rathgeb [ University of Duisburg-Essen, Institute for Experimental Mathematics Ellernstrasse 29, 45326 Essen, Germany ]
보안공학연구지원센터(IJMUE) [Science & Engineering Research Support Center, Republic of Korea(IJMUE)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Multimedia and Ubiquitous Engineering
간기
월간
pISSN
1975-0080
수록기간
2008~2016
등재여부
SCOPUS
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Multimedia and Ubiquitous Engineering Vol.4 No.2