Change in osmo-bts[master]: Implement tx power ramp down during BTS shutdown

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pespin gerrit-no-reply at lists.osmocom.org
Thu Jun 18 14:20:41 UTC 2020


pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-bts/+/18904 )

Change subject: Implement tx power ramp down during BTS shutdown
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Patch Set 1:

(1 comment)

https://gerrit.osmocom.org/c/osmo-bts/+/18904/1/src/common/gsm_data.c 
File src/common/gsm_data.c:

https://gerrit.osmocom.org/c/osmo-bts/+/18904/1/src/common/gsm_data.c@43 
PS1, Line 43: 650
> 650 seconds? Isn't it too much?
I used this number simply to have a big enough time to allow all power ramping setting, thinking it could take up to 600, but I took the number from the top of my head and it looks like I'm wrong. Time needed is basically:
 VTY's power-ramp step-interval (trx->power_params.ramp.step_interval_sec) multiplied by the amount  of steps needed (taking into account how many dB each step moves), plus time to get response back for each step.
So as you can see calculating the needed time can be a bit complex. So for now I think I'll simply leave a big number here and we can fine grain more how to dynamically calculate this value here.



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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I70e34dda8974ebd94aea33bd9fb1d99f9063cc55
Gerrit-Change-Number: 18904
Gerrit-PatchSet: 1
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-Comment-Date: Thu, 18 Jun 2020 14:20:41 +0000
Gerrit-HasComments: Yes
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Comment-In-Reply-To: fixeria <vyanitskiy at sysmocom.de>
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