Table 1

File transfer directions and rates (kbps, mean ± SD, n = 4)

A. File transfer rate in an open area between two laptops for different file sizes and link statuses

1 MB
10 MB
100 MB
1000 MB

Excellent
400
2000
1660
980
Good
210
890
1110
830
Fair
90
660
740
660
Poor
60
220
250
340
B. Transfer rates for a 50-MB file between a server and clients under different link statuses



I. Server to one client





Pushing
Pulling





Excellent
3090 ± 70
5540 ± 180


Good
2870 ± 280
5530 ± 130


Fair
630 ± 500
2070 ± 550


II. One client to server





Pushing
Pulling





Excellent
2600 ± 110
5210 ± 410


Good
2710 ± 330
4350 ± 1030


Fair
340 ± 80
750 ± 440


III. Two clients to server





Client 1
Client 2





Excellent
2160 ± 60
3130 ± 320


Good
2140 ± 370
3230 ± 40


IV. Client 1 to client 2




Excellent
2400 ± 70



Good
2560 ± 130



V. Server to one client while moving




Excellent
2500 ± 500



Good
1200 ± 410




Chen et al. BMC Medical Informatics and Decision Making 2004 4:12   doi:10.1186/1472-6947-4-12