On Exploiting Multicast Advantages for QoS Guaranteed IPTV Services in WiMAX IEEE 802.16e Networks

• Main Authors: Wun-Cheng Li, 李文成
• Other Authors: Chien-Fu Cheng
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/75072635839553666184

碩士 === 淡江大學 === 資訊工程學系碩士班 === 100 === The mobile WiMAX networks characterized by the long-haul communications and high-speed transmissions have received much attention in recent years. The WiMAX network is able to support the wireless video services, such as mobile IPTV or multimedia services. For those mobile users who subscribe the same IPTV program, the multicasting can save the bandwidth consumption and thus gains the multicast advantages, as compared with unicasting. However, all MSs in a multicast group should apply the same modulation and the delay constraint of some MSs might not be guaranteed. This thesis proposes an IPTV multicast approach aiming at maximizing the bandwidth conservation and overall network throughput. The proposed approach partitions the mobile stations that demand for the same IPTV program into several multicast groups and schedules them for network access such that the multicast advantage can be fully explored while the delay constraints can be satisfied. Simulation results reveal that the proposed multicast mechanism outperforms existing work in terms of the multicast advantages, user satisfactory and network throughput.