• Title/Summary/Keyword: Application Multicast

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Implementation and Experiments of IPv6-based Multicast Application over TEIN (TransEurasia Information Network) (한-유럽간 트랜스유라시아 망을 이용한 IPv6 기반 멀티캐스트 응용 도구 개발 및 실험)

  • In, Min-Kyo;Lee, Seung-Yun;Park, Ki-Shik
    • The KIPS Transactions:PartC
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    • v.9C no.5
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    • pp.719-724
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    • 2002
  • In the paper, we describe the IPv6-based multicast videoconferencing tool and it's experimental results by using TEM (TransEurasia Information Network) which is connected between Korea and Europe recently. And we explain the efficient configuration method of IPv6 multicast as well as IPv6 configured tunneling in between Korea and Europe.

Wired/Wireless Combination Network Plan for Realtime Wiress Multimedia Application Service (Realtime Wiress Multimedia Application service를 위한 유/무선 통합 네트워크 설계)

  • Eon, Ki-Boo;Lee, Mung-Hoon;Yoe, Hyun
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • v.9 no.1
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    • pp.109-112
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    • 2005
  • As the degree of use of network is increasing the need for building the basic of the stable network service is being needed a lot. Also the engineers require the traffic control for the best application and management and bandwidth management urgently. To solve these problems, there were no other ways of increasing the bandwidth of lines until now. However, this solution has the limit that the cost is too high and the traffic problem is growing continuously. On this study, it is suggested that through the planning the wired /wireless combination network design offering the service of QoS, Multicast, Mobile, realtime multimedia traffic delay without packet loss will be dealth with.

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An Enhanced Xcast Protocol for Mobile Nodes in IP Networks (IP 망에서의 이동 노드를 위한 향상된 Xcast, 프로토콜)

  • Nam Sea-Hyeon
    • Journal of Internet Computing and Services
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    • v.6 no.3
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    • pp.85-95
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    • 2005
  • Whereas the traditional multicast schemes based on Mobile IP can support a limited number of very large multicast groups, the Xcast protocol can support a very large number of small multicast groups, In the Xcast, the source node encodes the list of destinations in the Xcast header. Therefore, the maximum packet size in the network limits the number of destinations that a Xcast packet may have. In this paper, an enhanced Xcast protocol is proposed to solve the multicast group size limitation of the existing Xcast protocol in providing multicast service for mobile nodes. Moreover, the SIP (a very flexible control plane protocol) is integrated with the proposed multicast scheme to provide mobility awareness on the application layer. The simulation results verify that the proposed multicast scheme not only increases the packet delivery ratio and the data packet forwarding efficiency but also achieves low latency of packets in the network.

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The Algorithm of Efficient Core Selection Estimation for the Multicast Delay Variation Problem and Minimum Delay Variation (멀티캐스트 지연변이 문제에 대한 효율적인 코어 선택 추정 알고리즘)

  • Ahn, Youn-Gjin;Kim, Moon-Seong;Choo, Hyun-Seung
    • Journal of Internet Computing and Services
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    • v.8 no.2
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    • pp.33-41
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    • 2007
  • With the development of the multicast technology, the realtime strategy among the group applications using the multicast routing is getting more important. An essential factor of these real-time application is to optimize the Delay- and delay Variation-Bounded Multicast Tree(DVBMT) problem. This problem is to satisfy the minimum delay variation and the end-to-end delay within an upper bound. The DVBMT problem is known as NP-complete problem. The representative algorithms for the problem are DVMA, DDVCA, and so on. In this paper, we show that the proposed algorithm outperforms any other algorithm. The efficiency of our algorithm is verified through the prerformance evaluation and the enhancement is up to about 9% to 29% in terms of the multicast delay variation. The time complexity of our algorithm is $O(mn^2)$M.

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A Study on the Transmission Delay of Internet Broadcasting Service using Overlay Multicast (오버레이 멀티캐스트기법을 이용한 인터넷 방송 서비스의 전송지연에 대한 개선 연구)

  • Cho, Hye-ran;Song, Bok-sub;Kim, Jeong-ho
    • Proceedings of the Korea Contents Association Conference
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    • 2007.11a
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    • pp.270-273
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    • 2007
  • The overlay multicast that has been recently presented as an alternative for the IP multicast has been getting much persuasion by the advancement of the network techniques to enforce routing in application-level. But, The overlay multicast is a problem of delay and the load of the traffic control. In this paper, we suggested to an effective transmission routing tree between users based on overlay multicast of Internet broadcasting Service. And we evaluated an optimal value of transmission delay about Internet broadcasting using this suggest model.

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An Efficient Overlay Multicast Scheduling for Composite Stream in P2P Environment (P2P 환경에서 복합 스트림 서비스를 위한 효율적인 오버레이 멀티캐스트 스케줄링)

  • Kim, Jong-Gyung;Choi, Sung-Uk
    • Journal of the Korea Society of Computer and Information
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    • v.13 no.6
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    • pp.233-241
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    • 2008
  • The overlay multicast that has been recently presented as an alternative for the IP multicast needs scheduling method that can apply the system resource and the network bandwidth for the many users. We propose a efficient overlay multicasting network policy for multimedia services with composite stream service topology. And in order to evaluate the ability of the proposed scheme's performance, We test the performance of multi_casting nodes with RTT values, the bandwidth attrition rate for building the network topology and MOR effects with Overcast[5] The result of simulation shows improves about $8{\sim}20%$ of performance.

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Efficient multicast Transmission Mechanism for Mobile IPv6 Networks Environments (Mobile IPv6 네트워크를 위한 효율적인 멀티캐스트 전송 기법)

  • Lee, In-Sik;Seo, Doo-Ok;Lee, Dong-Ho
    • Journal of the Institute of Electronics Engineers of Korea TC
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    • v.43 no.12 s.354
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    • pp.42-52
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    • 2006
  • The interest for IPv6, Which is next generation IP, increases, while th difficulty for adopting it into IT indestries also increase too. We also expect that Internet technologies develop 0 basis of All-IP networks, which include various heterogeneous networks. Therefore, it is necessary for network to support mobility and multicast capavility to create application with wide-variety- In this paper, we propose a scheme that be able to provide mobility and multicast efficient in IPv6 networks. The proposed scheme has been implemented and experimented on NS-2 and validated with respect to multicast packet delay time and count of Joining and pruning)

Reliable Hybrid Multicast using Multi-layer Transmission Path (다계층 전송경로를 이용한 신뢰성 있는 하이브리드 멀티캐스트)

  • Gu, Myeong-Mo;Kim, Bong-Gi
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.20 no.1
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    • pp.35-40
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    • 2019
  • It is important to constantly provide service in real-time multimedia applications using multicast. Transmission path reconstruction occurs in hybrid multicast using Internet Protocol (IP) multicast and ALM in order to adapt the network status to things like congestion. So, there is a problem in which real-time QoS is reduced, caused by an increase in end-to-end delay. In this paper, we want to solve this problem through multi-layer transmission path construction. In the proposed method, we deploy the control server and application layer overlay host (ALOH) in each multicast domain (MD) for hybrid multicast construction. After the control server receives the control information from an ALOH that joins the MD, it makes a group based on the hop count and sends it to the ALOH in each MD. The ALOH in the MD performs the role of sending the packet to another ALOH and constructs the multi-layered transmission path in order of priority by using control information that is received from the control server and based on the delay between neighboring ALOHs. When congestion occurs in, or is absent from, the ALOH in the upper MD, the ALOH selects the path with the highest priority in order to reduce end-to-end delay. Simulation results show that the proposed method could reduce the end-to-end delay to less than 289 ms, on average, under congestion status.

Efficient and Scalable Overlay Multicast Mechanism for Real-time Tree Construction (효율적이고 확장성 있는 실시간 트리 구성을 위한 오버레이 멀티캐스트 메커니즘)

  • Nam, Yun-Seung;Im, Dong-Gee;Yang, Hyun-Jong;Nam, Ji-Seung
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.34 no.12B
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    • pp.1399-1406
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    • 2009
  • In the internet broadcast, efficient and scalable mechanism of multicast is needed for the communication between groups. Furthermore, Optimization of the multicast tree is required to improve the performance of overlay multicast. This optimization is well-known as NP-complete. If a node in the tree has limited out-degree, a user who wants to join the group has to find parent user who has already joined. In this paper, the users who want to join the group need to setup their level using delay test from source node. And then new users can find candidate parent nodes effectively using ACK-SEND approach and take proper position by comparing level. The closer node of the user to root node should be located in lower level. Also, even if a barrier is caused, fast recovery will be guaranteed using ACK-SEND approach. Through this, the newcomer node can fine their location in the multicast tree and join the group fast and effectively.

One-Time Overlay Multicast Techniques Considering Receipt Quality for m-to-n Comunication over Large Internet (다자간의 통신환경에서 다양한 수신품질을 고려한 One-Time 오버레이 멀티캐스트 기법에 관한 연구)

  • Yoon Mi-youn;Kim Ki-Young;Kim Dae-Won;Shin Yong-Tae
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.30 no.1B
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    • pp.27-38
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    • 2005
  • IP Multicast has not been deployed because of hardware problems. So a new scheme that is called Overlay Multicast for group communication has been emerged. It supports IP Multicast functions, which is located on application level. For developing it, we have been focused on efficient overlay tree construction among group members with low stretch and stress. However, we should consider a variety of transmission or receipt condition since a real internet environment has users with various transmission/receipt rates. Thus, we make one-time source specific tree depending on required bandwidth informationof group members when a member requests data transmission. Our mechanism provides satisfied data quality limited maximum transmission rate of the source to each group members. Furthermore, we manage a large group enough as distributing control information to cores that are designated membersfor maintaining host member information. Lastly, we prove that our tree guarantees data quality to each group members, and show low tree consruction time is required. In addition, for evaluating group scalability, we analyze control information increasing rate via group size, and validate its scalability.