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The performance of P2P networks have decreased severely because of the large number of free-riders. How to incentive nodes to provide service is an important factor to improve the performance of P2P networks. A novel ultra-node selection mechanism with incentive called USMI is presented in this paper. The main contributions of USMI are following: 1) any node in USMI has a value called utility. The...
In this paper,based on the analysis and comparison of the several current typical multiple constraints routing algorithms,a kind of simple multiple contraints multimedia routing algorithm is researched and implemented.Multiple contraints embodied in the two indicators bandwidth and latency.In this algorithm,all links not meeting the bandwidth requirements are eliminated firstly,then we select the...
Video streaming is challenging in wireless networks due to the high loss rate and limited bandwidth. In video sequences, different part has different importance for reconstruction. Based on H.264 error resilient tool of datapartitioning, we apply UEP (Unequal Error Protection) to different data partitions. RS (Reed Solomon) coding is used for data partition A, whereas simple repeat-packet coding for...
Stream Control Transmission Protocol (SCTP) is a new transport layer protocol that is due to replace TCP (Transmission Control Protocol) and UDP (User Datagram Protocol) protocols in future IP networks. Currently, it is implemented in such operating systems like BSD, Linux, HP-UX or Sun Solaris. It is also supported in Cisco network devices operating system (Cisco IOS) and may be used in Windows....
This paper presents experimental results of the implementation of network steganography method called RSTEG (Retransmission Steganography). The main idea of RSTEG is to not acknowledge a successfully received packet to intentionally invoke retransmission. The retransmitted packet carries a steganogram instead of user data in the payload field. RSTEG can be applied to many network protocols that utilize...
With the rapid development of video streaming era, multipath video streaming comes as a promising solution. However, dividing the video into different sub-streams is still considered as an important challenge for researchers. In this paper, we propose an approach for generating multiple complementary descriptions of the video flow, then to couple these descriptions with the path diversity provided...
A new genre of P2P systems, P2P Video-on-Demand (P2P-VoD), has not only received substantial recent research attention, but also been implemented and deployed with success in large-scale real-world streaming systems, such as PPLive. The essential characterization of P2P-VoD systems is to take full advantage of peer upload bandwidth contribution with a cache on each peer. Meanwhile, the asynchronous...
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