Improving call setup time for 3G

[walnem]

I was able to get an improvement of call setup time from 3s to 1s in PS and CS calls.
The trick is that all the setup establishment phase is done on SRB. The default on most vendors is to set the rate of SRB to 3.4kbps. By setting it to 13.6kbps u will get the messages sent 3 times faster. Performance stayed the same.
I would share the report i wrote but i'm still a junior member so if u can help me with reputation id share the report.
Hope this was helpful (and please if u can help me with reputation that would be great)

[eric4good]

Thanks Walnem, can you share the report by sending to fma_76@yahoo.com
BR

I was able to get an improvement of call setup time from 3s to 1s in PS and CS calls.
The trick is that all the setup establishment phase is done on SRB. The default on most vendors is to set the rate of SRB to 3.4kbps. By setting it to 13.6kbps u will get the messages sent 3 times faster. Performance stayed the same.
I would share the report i wrote but i'm still a junior member so if u can help me with reputation id share the report.
Hope this was helpful (and please if u can help me with reputation that would be great)

[yafawi79]

High fuad:
Glad to hear from you. as per your inquiry Qqualmin is set to -18 and SSearchintrafreq to 5. That is; Cell reselection is triggerd when:
SsignalEcNo < -18 + (2×5)
S EcNo < -8
Thanks and best regards

[dtvt2]

Thanks for sharing, a valid point for speeding reselection, what is the intrasearch and qQualmin values you are you currently using.
BR

Hi friend
In my network. Intrasearch = -6 and Intersearch = -10. To increase speeding reselection you can change Tselection

[incoincov]

From statistics its as follows
CS
Max RRC setup time is 4s
Max CS RAB setup time is 6s
PS
Max RRC setup time is 4s
Max PS RAB setup time is 8s

I am trying as well to test ping times or RTT (round trip time), the max ping time is below 20ms (nodeB to RNC), but pinging youtube or facebook is returning values above 200ms which I think is a bit high isnt it for 3G? what is the acceptable ping times for 3G.

Hi,

How exactly did you measure/get these values? Cheers

[tsiz]

Hi, Maybe you should check what your rrcconnectionsetup timer is set to? If it is set to 9 seconds or more, you have quite a high call setup time. Also, if you have block redirection "on" then it is going to scan for other frequencies after rrc reject which would still increase the call setup time.

[eric4good]

From ZTE performance counters, they have counters to report setup times for RRC and RAB.

Hi,

How exactly did you measure/get these values? Cheers