active queue management (aqm) plays an important role in the internet congestion control. it tries to enhance congestion control, and to achieve tradeoff between bottleneck utilization and delay. random early detection (red) is the most popular active queue management algorithm that has been implemented in the in internet routers and is trying to supply low delay and low packet loss. red algori...

If highly compressed multimedia streams are transported over packet networks, losses of individual packets can impair the perceptual quality of the received stream in different degrees, depending on the content and context of the lost packet. In this paper, we investigate the impact of individual packet loss on the perceptual speech quality in Voice-over-IP systems using three popular coding ty...

Active Queue Management (AQM) plays an important role in the Internet congestion control. It tries to enhance congestion control, and to achieve tradeoff between bottleneck utilization and delay. Random Early Detection (RED) is the most popular active queue management algorithm that has been implemented in the in Internet routers and is trying to supply low delay and low packet loss. RED al...

We consider a grid network where nodes contain small buffers. A packet that faces a crowded buffer in its route will get extra latency and may be dropped. In this paper, we propose a novel flow control protocol called RFCC for grid networks. RFCC tries to reroute delayed packets and utilizes network coding to introduce a configurable amount of redundant information in the network, thereby incre...

The Internet measurement experiments continue to show that bandwidth, delay and packet loss on the Internet vary considerably, posing a challenge for real-time audio applications. Out of these, effect of packet loss is critical to the audio quality. Also, packet-retransmission is not a viable error recovery option for audio. In absence of such a guarantee of reliability, our objective is to pre...

This paper describes methods for reducing the connectionless packet loss rate in the DQDB to ATM Interworking Unit (IWU). Results from simulation studies are presented to show the relationship between the buffering available in the IWU and the reduction in cell and packet loss probabilities. Further performance studies compare the performance of the Lost Packet Screening scheme, the Pushout Buf...