Design and Implementation of a P2P-IPTV System with NAT Traversal

• Main Authors: Hung-ming Wang, 王鴻明
• Other Authors: Jiann-Jone Chen
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/28800700713551026389

碩士 === 國立臺灣科技大學 === 電機工程系 === 101 === With the advance of multimedia codec technologies and Internet prevalence, multimedia becomes one of major information communication tools. Transmitting Tele-Vision signals through Internet Packets, IPTV, becomes the mainstream of Internet multimedia. In this thesis, a complete and secured IPTV system, which comprises media codecs, streaming, encryption/decryption, bandwidth estimation and NAT traversal units, has been developed to meet the application requirement of Internet multimedia. The Content Delivery Network (CDN) and Peer-to-Peer (P2P) networks are integrated to provide the P2P-IPTV service. For streaming live videos, we proposed a Multi-Parametered Adaptive Tree (MPAT) algorithm to solve the bottleneck of dynamic peer linking behavior that would lead to unstable P2P-IPTV quality of service (QoS). To configure the IPTV, we take peer bandwidth capacity, peer online time, CPU utilization and transmission delay, to dynamically adjust the video multicast tree for low-delay P2P-IPTV services, and reduce peer disruption frequency for improving the reliability of the multicast tree. In addition, for transparent P2P-IPTV transmission services, the Session Traversal Utilities for NAT (STUN) protocol is integrated, in which the NAT traversal scheme is implemented to ensure that peers behind the NAT can also streaming out for other peers. Our experiments show that the proposed P2P routing strategy can reduce the transmission delay, and improve the reliability of multicast tree. By integrating the NAT traversal scheme in our system, it achieves the target of transparent P2P-IPTV services that can provide video streaming services over heterogeneous networks.