Parameter gamma Conditions for Stability of FAST TCP

Author

Liang, Wei ; Zhang, Shunyi ; Xiangyan Ning ; Ning, Xiangyan ; Sun, Yanfei ; Chang, Jinyi

Author_Institution

Nanjing Univ. of Posts & Telecommun., Nanjing, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

The stability of FAST TCP in a single-link single-source is studied in this paper. A continuous time fluid flow model of the link buffer is considered to build a linear control system model related to fast TCP. Linearing the fluid flow model and window control model, Laplace transform version of the equations are presented. It results in a negative feedback system with open loop transfer function. With the analysis of Nyquist curve of the system, a sufficient condition on asymptotical stability of fast TCP congestion window related to the parameter gamma is obtained. Packet level NS2 simulations are used to verify the theoretical claims.

Keywords

Laplace transforms; asymptotic stability; linear systems; transport protocols; Laplace transform; Nyquist curve; asymptotical stability; continuous time fluid flow model; fast TCP congestion window; linear control system; link buffer; negative feedback system; open loop transfer function; packet level NS2 simulations; parameter gamma condition; single-link single-source; transport control protocol; window control model; Control system synthesis; Fluid flow; Fluid flow control; Laplace equations; Negative feedback; Negative feedback loops; Open loop systems; Stability; Sufficient conditions; Transfer functions;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302913

Filename

5302913