osmocom-bb[fixeria/trx]: fake_trx/ctrl_if_bb.py: add FAKE_RSSI and FAKE_TOA commands

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Harald Welte gerrit-no-reply at lists.osmocom.org
Tue Feb 27 21:14:05 UTC 2018


Patch Set 2: Code-Review-1

actually, I think setting an absolute value is not a good idea.  We should be able to set/configure a _delta_ value.  In this case we can do full/proper TA loop testing:
* trxcon sends with toa=0
* fake_trx adds e.g. 512 (2 bits)
* osmo-bts sends TA=2 in downlink SACCH
* "mobile" can tell trxcon to send with toa=-512 (-2*256)
* fake-trx adds -512+512=0
* osmo-bts receives TOA=0 which is expected if the timing advance loop is balanced.

what do you think?  How do you currently handle TA with the SDR PHY for osmcoom-bb?

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Gerrit-MessageType: comment
Gerrit-Change-Id: Ia23becec4104d47e7b22350db67b8834d6f1ad1b
Gerrit-PatchSet: 2
Gerrit-Project: osmocom-bb
Gerrit-Branch: fixeria/trx
Gerrit-Owner: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Harald Welte <laforge at gnumonks.org>
Gerrit-Reviewer: Jenkins Builder
Gerrit-Reviewer: Vadim Yanitskiy <axilirator at gmail.com>
Gerrit-HasComments: No



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