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
Mon Jun 22 18:15:56 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 3:

(2 comments)

https://gerrit.osmocom.org/c/osmo-bts/+/18904/3/src/common/bts_shutdown_fsm.c 
File src/common/bts_shutdown_fsm.c:

https://gerrit.osmocom.org/c/osmo-bts/+/18904/3/src/common/bts_shutdown_fsm.c@78 
PS3, Line 78: 			if (trx->power_params.p_total_cur_mdBm > 0)
> so the mdBm <= 0 corresponds to the to_mdB(-10) above? […]
Yes, I opted to make it more robust by simply checking it reached at least 0. In any case theoretically the callback is not called until the target is reached, but I thought it was more robust to check for 0 here in case some TRX backend for whatever reason plays wrong with negative values and we end up with only 0 being set.
I can change it if you want, not really important imho.


https://gerrit.osmocom.org/c/osmo-bts/+/18904/3/src/common/gsm_data.c 
File src/common/gsm_data.c:

https://gerrit.osmocom.org/c/osmo-bts/+/18904/3/src/common/gsm_data.c@44 
PS3, Line 44: 	 * shutdown start based on params below, and highest trx value taken:
> (if it is a sanity timeout then a fixed number should be fine IMO)
well the problem here is that the timeout can be quite large if specific the power-ramp params are set, so ideally it'd be better to make the sanity timeout adaptative.



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Gerrit-Project: osmo-bts
Gerrit-Branch: master
Gerrit-Change-Id: I70e34dda8974ebd94aea33bd9fb1d99f9063cc55
Gerrit-Change-Number: 18904
Gerrit-PatchSet: 3
Gerrit-Owner: pespin <pespin at sysmocom.de>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: fixeria <vyanitskiy at sysmocom.de>
Gerrit-Reviewer: laforge <laforge at osmocom.org>
Gerrit-Reviewer: pespin <pespin at sysmocom.de>
Gerrit-CC: neels <nhofmeyr at sysmocom.de>
Gerrit-Comment-Date: Mon, 22 Jun 2020 18:15:56 +0000
Gerrit-HasComments: Yes
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Comment-In-Reply-To: neels <nhofmeyr at sysmocom.de>
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