fixeria has uploaded this change for review. (
https://gerrit.osmocom.org/c/osmocom-bb/+/14586
Change subject: trx_toolkit/fake_trx.py: introduce a TRXC command for C/I
simulation
......................................................................
trx_toolkit/fake_trx.py: introduce a TRXC command for C/I simulation
Change-Id: I7080effbbc1022d1884c6d6f0cb580eba8e514ff
---
M src/target/trx_toolkit/fake_trx.py
1 file changed, 28 insertions(+), 2 deletions(-)
git pull ssh://gerrit.osmocom.org:29418/osmocom-bb refs/changes/86/14586/1
diff --git a/src/target/trx_toolkit/fake_trx.py
b/src/target/trx_toolkit/fake_trx.py
index 12bcb80..641dd07 100755
--- a/src/target/trx_toolkit/fake_trx.py
+++ b/src/target/trx_toolkit/fake_trx.py
@@ -63,8 +63,15 @@
from (rssi_base - rssi_rand_threshold)
to (rssi_base + rssi_rand_threshold).
- Please note that randomization of both RSSI and ToA is optional,
- and can be enabled from the control interface.
+ - C/I (Carrier-to-Interference ratio) - value in dB, computed from
+ the training sequence of each received burst, by comparing the
+ "ideal" training sequence with the actual one. A pair of both
+ base and threshold values defines a range of C/I randomization:
+
+ from (ci_base - ci_rand_threshold)
+ to (ci_base + ci_rand_threshold).
+
+ Please note that the randomization is optional and disabled by default.
== Timing Advance handling
@@ -250,6 +257,25 @@
self.rssi_base += int(request[1])
return 0
+ # C/I simulation
+ # Absolute form: CMD FAKE_CI <BASE> <THRESH>
+ elif self.ctrl_if.verify_cmd(request, "FAKE_CI", 2):
+ log.debug("(%s) Recv FAKE_CI cmd" % self)
+
+ # Parse and apply both base and threshold
+ self.ci_base = int(request[1])
+ self.ci_rand_threshold = int(request[2])
+ return 0
+
+ # C/I simulation
+ # Relative form: CMD FAKE_CI <+-BASE_DELTA>
+ elif self.ctrl_if.verify_cmd(request, "FAKE_CI", 1):
+ log.debug("(%s) Recv FAKE_CI cmd" % self)
+
+ # Parse and apply delta
+ self.ci_base += int(request[1])
+ return 0
+
# Path loss simulation: burst dropping
# Syntax: CMD FAKE_DROP <AMOUNT>
# Dropping pattern: fn % 1 == 0
--
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Gerrit-Project: osmocom-bb
Gerrit-Branch: master
Gerrit-Change-Id: I7080effbbc1022d1884c6d6f0cb580eba8e514ff
Gerrit-Change-Number: 14586
Gerrit-PatchSet: 1
Gerrit-Owner: fixeria <[email protected]>
Gerrit-MessageType: newchange
