End-to-End differentiation between wireless and congestion loss can equip TCP control so it operates effectively in a hybrid wired/wireless environment. Our approach integrates two techniques: packet loss pairs (PLP) and Hidden Markov Modeling (HMM). A packet loss pair is formed by two back-to-back packets, where one packet is lost while the second packet is successfully received. The purpose i...

Several embedded video coding schemes have been recently developed for multimedia streaming over IP. In particular, fine-granular-scalability (FGS) video coding has been recently adopted by the MPEG-4 standard as the core video-compression method for streaming applications. From its inception, the FGS scalability structure was designed to be packet-loss resilient especially under unequal packet...

In this contribution we investigate the error robustness tools offered by the JPEG2000 coding standard. Error robustness is supported on entropy coding level and packet level. A synchronization loss caused by a packet loss can be prevented if marker segments are inserted into the code stream. However, a packet loss and the related loss of wavelet coefficients causes a severe visual distortion. ...

In this paper, a packet loss concealment (PLC) algorithm for CELP-type speech coders is proposed which improves the quality of decoded speech under burst packet loss conditions. The proposed PLC algorithm is based on the reconstruction of excitation by combining voiced excitation and random excitation, where the voice excitation is obtained from the adaptive codebook excitation scaled by a voic...

This paper describes an outline of a project for developing a VoIP codec that can be used under a very severe communication environment where half of the packets drop. The codec is based on G.729 CS-ACELP, and a packet loss concealment (PLC) methods with redundant information will be used for enhancing speech quality. First, we assessed the importance of G.729 parameters, where we found that pa...

Packet loss recovery is an important part of P2P video streaming networks due to inevitable packet loss in today’s internet and interdependency of data units in compressed video streams. In addition, the architecture of P2P streaming networks, in which the data delivered to the receivers through chain of peers, can intensify the impact of the internet packet loss on the quality of perceived vid...

Recently, a lot of study has been carried out to clarify the dynamics of TCP congestion control mechanism. The congestion window distribution of idealized TCP has been investigated with constant packet loss in [1] and with variable packet loss in [2]. Average window size and throughput have been calculated in [3–5]. A stochastic Ito calculus has been developed in [6]. These studies considered p...

The unidirectional transmission technology is designed to protect the confidentiality of data on the high assurance network. It allows data to transmit only in one direction and prevents the use of acknowledgements or other connection-oriented mechanisms. This makes packet loss become a key issue in unidirectional transmission because of its influence on reliability and performance. In this pap...

Injection of IP packet loss is a versatile method for emulating real-world network conditions in performance studies. In order to reproduce realistic packet-loss patterns, stochastic fault-models are used. In this report we desribe our implementation of a Linux kernel module using a Continuous-Time Gilbert Model for packet-loss injection.

In this paper loss of packets in TCP is detected using two diverse methods CPR (Constant Packet Re-arranging) and WCPR (Without Constant Packet Re-arranging) in diverse platforms. This paper proposes a new version of the TCP which gives the high throughput when the packet rearranging occurs and in another case if the packet rearranging is not occurs then in that case also it is friendly to othe...