The efficacy of centralized flow rate control in 802.11-based wireless mesh networks

EURASIP Journal on Wireless Communications and Networking

Table 2 Fairness indices for upstream TCP flows

Scheme	JFI		$\frac{min. rate}{fair rate}$		$\frac{max. rate}{fair rate}$		$\frac{U}{U_{opt}}$
	Avg.	Std.Dev.	Avg.	Std. Dev.	Avg.	Std.Dev.	Avg.	Std.Dev.
Single FIFO queue	0.31	0.13	0.17	0.16	15.2	11.6	0.95	0.09
FQ	0.32	0.13	0.16	0.15	14.04	0.61	1.00	0.06
Aggregate rate limit	0.79	0.16	0.43	0.34	2.23	0.91	0.99	0.07
Aggregate rate limit and FQ	0.91	0.11	0.59	0.40	1.38	0.37	1.00	0.03
Per-flow rate limit	0.99	0.02	0.76	0.30	1.00	0.06	0.90	0.06
Source rate limit	0.99	0.01	0.77	0.21	1.00	0.01	0.91	0.07