Multicast-based Protocols for Packet Lost Reduction in an 802.16-based Network Environment

• Main Authors: HSIN-CHI LIAO, 廖信吉
• Other Authors: CHUN-CHUAN YANG
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/63883253498296017403

碩士 === 國立暨南國際大學 === 資訊工程學系 === 93 === The Announcement of 802.16 has given people the new experience of wireless networking. Using wireless network distance between people can be shortened and the realization of global village can be achieved. Deployment of 802.16 in urban area can benefit the network company in term of reducing the wire deployment cost. With transmission range over 30 miles, 802.16 can provide telecommunication for country with less developed infrastructure and area that is hard to deploy wire line such as mountain or dessert. In the 802.16 architecture, we have a Base Station (BS) and several Subscriber Stations (SS). The communication between BS and SS is connected by wireless media. Each subnet (for example: 802.11) is connected under a SS. In 802.16 network environment, mobile host will execute handoff procedure when mobile host moves from old network to new network. Packet lost and handoff delay will occur during handoff process. We use the mobility management scheme introduced for 802.11 wireless networks such as multicast-based and predictive mechanisms to reduce packet lost during handoff in 802.16 wireless networks. In this paper, we propose a new mechanism based on multicast-based, predictive mechanism and using time point as consideration to reduce packet lost. In the future, we hope that we can extend this research by including Quality of Service (QoS).