Rate Control for Scalable Multimedia Applications in Network-on-Chips

2009 ◽  
Author(s):  
Salman Mostafavi ◽  
Ahmad Khonsari ◽  
Mohammad S. Talebi ◽  
Mohamed Ould-Khaoua
Keyword(s):  
Rate Control ◽  
Multimedia Applications

scholarly journals S-TFRC: An efficient rate control scheme for multimedia handovers

2016 ◽  
Vol 13 (1) ◽  
pp. 45-69 ◽  
Author(s):  
Imdad Ullah ◽  
Zawar Shah ◽  
Adeel Baig
Keyword(s):  
Analytical Model ◽  
Rate Control ◽  
Performance Metrics ◽  
Multimedia Applications ◽  
Mobility Patterns ◽  
Transmission Delays ◽  
Vertical Handovers ◽  
Control Scheme ◽  
Handover Process ◽  
Service Disruption

The integration of heterogeneous wireless access technologies has numerous issues for multimedia applications, such as to smoothly continue over new connections without any service disruption during vertical handovers. We propose State-Aware Feedback extension to Datagram Congestion Control Protocol (DCCP) that meets QoS requirements of multimedia applications throughout the handover process. We consider movement of mobile subscribers among heterogeneous access technologies from highly unstable to more stable environment and model their mobility patterns as Uniform, Pareto, and Exponentially distributed. We present detailed analysis on the performance of proposed mechanism in terms of resuming transmissions during the handover process. In particular, we propose Markov model of TFRC capturing TCP timeouts, loss rates, and no-feedback timer expirations. We validate the proposed analytical model through simulations and show that it accurately predicts various congestion events that may happen during the handover process. We then evaluate the performance of S-TFRC via both simulations and analytical model and observe the sender rates and throughputs achieved. We also consider transmission delays and transmission rates as performance metrics and compare performance of S-TFRC with the standard TFRC. Our results show that S-TFRC is capable of providing better QoS to multimedia applications than standard TFRC by significantly reducing transmission delays and provides better throughput to multimedia applications.

scholarly journals Performance Enhancement of TCP Friendly Rate Control Protocol over Wired networks

2016 ◽  
Vol 6 (6) ◽  
pp. 2949
Author(s):  
N. Ramanjaneya Reddy ◽  
Chenna Reddy Pakanati ◽  
M. Padmavathamma
Keyword(s):  
Congestion Control ◽  
Rate Control ◽  
Performance Enhancement ◽  
Multimedia Applications ◽  
Transport Layer ◽  
Control Mechanisms ◽  
Control Protocol ◽  
Wired Networks ◽  
Tcp Friendly ◽  
Transport Layer Protocol

<p>One of the main aims of transport layer protocol is achieving best throughput without any congestion or reduced congestion.  With rapid growing application needs and with increasing number of networks in Internet, there is a primary need to design new protocols to transport layer.  To transmit multimedia applications, one of the suitable congestion control mechanisms in transport layer is TCP Friendly Rate Control Protocol (TFRC).  It controls congestion based on its equation. However, every packet requires an acknowledgement in TFRC. It creates congestion in the network when the transmitted data is very large, which results in reduced throughput. This paper aims to increase the throughput when the transmitted data is large with minimal congestion by reducing the number of acknowledgements in the network.  We modified some fixed parameters in the TFRC equation. The results show the increased throughput with minimal congestion.</p>

Performance Enhancement of TCP Friendly Rate Control Protocol over Wired networks

2016 ◽  
Vol 6 (6) ◽  
pp. 2949 ◽  
Author(s):  
N. Ramanjaneya Reddy ◽  
Chenna Reddy Pakanati ◽  
M. Padmavathamma
Keyword(s):  
Congestion Control ◽  
Rate Control ◽  
Performance Enhancement ◽  
Multimedia Applications ◽  
Transport Layer ◽  
Control Mechanisms ◽  
Control Protocol ◽  
Wired Networks ◽  
Tcp Friendly ◽  
Transport Layer Protocol

<p>One of the main aims of transport layer protocol is achieving best throughput without any congestion or reduced congestion.  With rapid growing application needs and with increasing number of networks in Internet, there is a primary need to design new protocols to transport layer.  To transmit multimedia applications, one of the suitable congestion control mechanisms in transport layer is TCP Friendly Rate Control Protocol (TFRC).  It controls congestion based on its equation. However, every packet requires an acknowledgement in TFRC. It creates congestion in the network when the transmitted data is very large, which results in reduced throughput. This paper aims to increase the throughput when the transmitted data is large with minimal congestion by reducing the number of acknowledgements in the network.  We modified some fixed parameters in the TFRC equation. The results show the increased throughput with minimal congestion.</p>

Changes of the heart rate control during pupil's examinations

2007 ◽  
Author(s):  
E. S. Gevorkyan ◽  
S. M. Minasyan ◽  
N. N. Ksadjikyan ◽  
A. V. Dayan ◽  
TsI Adamyan
Keyword(s):  
Heart Rate ◽  
Rate Control ◽  
Heart Rate Control
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