IP Multicast with DiffServ in IPv6 Mobility Environment
| Autor: | Chun-Ta Lu, 呂俊達 |
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| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 With the evolution of the network technology, we can access the Internet by the wireless network even when moving. Based on the infrastructure, some applications would provide multicast services, the way of forwarding only to partial receivers, to their users in a group. However, multicast transmission may probably be influenced and cause the degradation of transmission quality when a mobile host (MH) moved from one network to another in a mobile IP network. The purpose of our research is to overcome this problem and keeps the quality of service (QoS) of a MH unchanged after moving. The proposed approach consists of three parts. First, the maximum bandwidth map (MBM) is established based on the link state database maintained by OSPF. The purpose of MBM is just a reference for a MH to join the multicast tree after the MH moves to another network. Second, a quality of service manager (QM) is used and in charge of establishing the multicast tree, processing the join path selection and maintaining the updated multicast tree after a MH submits a join message to a multicast tree. Third, a queuing scheme, called bonus time queue (BTQ) is used to increase the extra time for transmitting multicast packets in case of the insufficient of bandwidth in the network. The simulation results have shown that the proposed approach has better performance than other algorithms and improved the QoS requirements of a MH. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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