Restart SIM after loading config files in UMTS

This CL fixes a bug introduced with aosp/770344 in which the simulation
would be stopped when changing config file and then wouldn't be
restarted.

Bug: 112923220
Test: tested in the lab.
Change-Id: I2e6e23fbb1f931466cbdd0fca268fd69cac276c7

1 files changed, 15 insertions, 0 deletions

diff --git a/acts/framework/acts/test_utils/power/tel_simulations/UmtsSimulation.py b/acts/framework/acts/test_utils/power/tel_simulations/UmtsSimulation.py
index c129abb418..ae86f8f699 100644
--- a/acts/framework/acts/test_utils/power/tel_simulations/UmtsSimulation.py
+++ b/acts/framework/acts/test_utils/power/tel_simulations/UmtsSimulation.py
@@ -94,6 +94,8 @@ class UmtsSimulation(BaseSimulation):
         else:
             log.info("Preferred network type set.")
 
+        self.release_version = None
+
     def parse_parameters(self, parameters):
         """ Configs an UMTS simulation using a list of parameters.
 
@@ -185,7 +187,16 @@ class UmtsSimulation(BaseSimulation):
 
 
     def set_release_version(self, bts, release_version):
+        """ Sets the release version.
+
+        Loads the cell parameter file matching the requested release version.
+        Does nothing is release version is already the one requested.
+
+        """
 
+        if release_version == self.release_version:
+            self.log.info("Release version is already {}.".format(release_version))
+            return
         if release_version == self.PARAM_RELEASE_VERSION_99:
 
             cell_parameter_file = self.UMTS_R99_CELL_FILE
@@ -205,4 +216,8 @@ class UmtsSimulation(BaseSimulation):
             raise ValueError("Invalid UMTS release version number.")
 
         self.anritsu.load_cell_paramfile(cell_parameter_file)
+
+        # Loading a cell parameter file stops the simulation, so we need to restart it
+        self.start()
+
         bts.packet_rate = packet_rate