Bursty Packet Losses Research Articles

Packet Permutation: A Robust Transmission Technique for Continuous Media Streaming Over the Internet

With the growing popularity of the Internet, there is an increasing demand to deliver continuous media (CM) streams over the Internet. However, packets may be damaged or lost during transmission over the current Internet. In particular, periodic network overloads often result in bursty packet losses, degrading the perceptual quality of CM streaming. In this paper, we focus on reducing the impact of this bursty loss behavior. We propose a novel robust end-to-end transmission scheme, referred to as packet permutation (PP), to deliver pre-compressed continuous media streams over the Internet. At the server side, PP permutes, prior to transmission, the normal packet delivery sequence of CM streams in a specific way. The packets are then re-permuted at the receiver side before they are presented to the application. In this way, the probability of losing a large number of packets within each CM frame can be significantly reduced. To validate the effectiveness of PP, a series of trace-driven simulations are conducted. Our results show that for a given quality of service (QoS) requirement of CM streaming, PP greatly reduces the overhead required by traditional error control schemes, such as forward error correction (FEC) and feedback/retransmission-based schemes.

Rate allocation for video transmission over lossy correlated networks

A novel rate allocation algorithm for video transmission over lossy networks subject to bursty packet losses is presented. A Gilbert-Elliot model is used at the encoder to drive the selection of coding parameters. Experimental results using the H.26L test model show a significant performance improvement with respect to the assumption of independent packet losses.

Packet loss resilience for video stream over the Internet

Delivering video over the Internet is an important component of many Internet multimedia applications. However, currently the Internet does not offer any quality of service (QoS) guarantees to video transmission. Loss of packets in a video frame not only degrades the video quality, but also allows the error to propagate in the video stream. To solve this problem, several methods such as forward error control (FEC), retransmission, and error concealment have been proposed. However, these methods can not cope with bursty packet losses in the Internet. In this paper, we present a new error recovery scheme, called GOP based error spreading (GES), using packet interleaving at the group of picture (GOP) level. Experimental results show that the deterioration of video quality can be reduced by spreading the encoded data losses.

Throughput-delay analysis of a multichannel wireless access protocol

In this paper, we analyze the effect of bursty packet losses, caused by a correlation in the multipath fading process, on the throughput and delay performance of a multichannel wireless access protocol. M equal-capacity, orthogonal, traffic channels are shared by N mobile users (N/spl ges/M) on the uplink (mobile-to-base station link). Transmission attempts on the uplink are made based on the busy/idle status of the M receivers, which is broadcast by the base station, in every slot, on the downlink (base station-to-mobile link). Following a Markov chain analysis, we derive the analytical expressions for the average per channel throughput and the mean message transfer delay. Simulation results are shown to verify the analysis. We compare the effect of Doppler bandwidth on the performance of both the basic protocol without link layer error recovery and a modified version of the protocol that employs a persist-until-success link layer retransmission strategy to recover erroneous data packets.