Random early detection gateways for congestion avoidance
IEEE/ACM Transactions on Networking (TON)
TCP and explicit congestion notification
ACM SIGCOMM Computer Communication Review
A Comparison of the New 2400 Bps MELP Federal Standard with Other Standard Coders
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97)-Volume 2 - Volume 2
CODA: congestion detection and avoidance in sensor networks
Proceedings of the 1st international conference on Embedded networked sensor systems
Network border patrol: preventing congestion collapse and promoting fairness in the internet
IEEE/ACM Transactions on Networking (TON)
Digital Signal Processing (4th Edition)
Digital Signal Processing (4th Edition)
Computer Networks: The International Journal of Computer and Telecommunications Networking
Discrete-Time Signal Processing
Discrete-Time Signal Processing
Integer DCT based on direct-lifting of DCT-IDCT for lossless-to-lossy image coding
IEEE Transactions on Image Processing
Integer fast Fourier transform
IEEE Transactions on Signal Processing
TCP-Jersey for wireless IP communications
IEEE Journal on Selected Areas in Communications
Hi-index | 0.00 |
This paper presents three novel methods for implementing variable data rate (VDR) network congestion control (NCC), and compares them with traditional random (RND) drop methods. The proposed methods include: frequency (FRQ), combined random-innerloop frequency-outerloop (CRFRQ), and combined frequency-innerloop random-outerloop (CFRND). A generic model is used for RND drop that approximates congestion avoidance methods that drop packets. These methods allow NCC at intermediate network nodes using novel methods for setting data priority values. This is a first step towards demonstrating the need for stronger and efficient router technology to enhance Quality of Service (QoS) for voice applications. In the examples considered in this paper, the FRQ method reduced outage from 60% with RND to 0% with FRQ with 5 incoming flows through a bandwidth limited threshold of 1000 bits. Mean Opinion Score (MOS) was increased by a factor in the range from 0.2 to 1 on the MOS scale when using FRQ and CRFRQ over RND in the tested scenarios. CFRND performs in a similar manner to RND except it allows packet shrinking to increase network utilization. Network utilization increased by up to 37.5% over the RND method compared with the novel methods in one example where all possible outcomes for RND were analyzed. Computational complexity with the novel methods can yield a speedup from 0.02ms faster for 1 flow to 0.56ms faster for 10 flows over traditional lossy compression methods that rely on FFT operations, which are commonly found in lossy voice coders such as Speex, MELPe, and others. Finally, live real-time transport protocol (RTP) congestion tests were performed which confirmed the simulation results that the network congestion control methods achieve higher MOS scores and better QoS.