round trip time

[mosul]

hello everyone

iam new in labview and i wish i find some help here

iam trying to measure a ruond trip time of a wireless client/server scheme (packet_end_to_end delay)

i need ur advices in how designing the algorithm

thanks for all in advance

[Sarah_Y]

Hi Mosul,

What type of client/server are you planning on using and how are you going to acquiring this client/server data? How will LabVIEW be communicating with this client/server?

Thanks,

[mosul]

thank u very much for ur reply

iam trying to examine the applicability of using WLAN in control systems, so i try to control a servo motor remotly by WLAN. I need to determine the round trip time(packet_end_to_ end delay). i had completed my system design but i need an algorithm to determine RTT.

thanks for ur efforts in advance

[Sarah_Y]

Hi Mosul,

I found this article talking about methods of measuring RTT over WLAN.  

http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBQQFjAA&url=http%3A%2F%2Fciteseerx.ist.psu.edu%...

Hope that helps!

[mosul]

hi Sarah

iam very thankful for ur help. the article will help me in designing the algorithmit is very useful. i need to determine the RTT using labview and  i will be very thankful for ur efforts if u give me some hints in which type of timer that helps me

thank u in advence

[T-REX$]

Hi mosul,

I'm not sure what your application is, but using ping returns round trip times. You could use Labview to make a system call to ping, output that to a file, and then parse that back into labview with file I/O and string editing calls. The system call would be as simple as:

ping 127.0.0.1 > myFile.txt

this could then just be read into labview. No need to do more work than necessary 🙂