Unlike the previous commit, in noS1, we cannot use Attach(), as noS1
automatically brings up an interface, no matter whether the connection
succeeded or not. Therefore, consistently wait a bit longer to increase
the chance that the radio is really up.
For various reasons, the UE might take longer to connect to the eNB. A
simple sleep might not be enough; instead, use Attach() to actively wait
that the UE gets an IP address. The added bonus of this function is that
it will also stop&restart a UE if it did not attach, i.e., it will try
multiple times to attach the UE.
- adding a new test case
- the test case simulate a DL radio channel with noise and runs Iperf test with such channel conditions
- use CustomCommand class to send commands to a Telnet server
- switched from netcat’s unsupported -N option (OpenBSD) to --send-only (Ncat 7.94) for compatibility with CI
re-sync CI test in F1 RFSIM
- to be used in the future, for CI of RRCReestablishment in RFSIM
- adding four new test cases (040021, 040022, 040023, 040023) to the RFSIM F1 configuration
- the test cases simulate a disruption of the radio channel, verify UE sync loss and resync
and restore the original channel conditions
- use CustomCommand class to send commands to a Telnet server
temp xml
- no need to specify "single-ue" profile when running iperf test for 1 UE only
- default profile "balanced" can be used instead, computes BW for 1 UE correctly
Some CI users (OAI developers) expressed that the warning of the `docker
volume prune` before starting RFsim is confusing. To avoid the warning in
the HTML, force the removal; if the volume does not exist, no warning is
emitted.
To still catch possible problems, do not do this in the `terminate.xml`
so we might still see if there are other problems.
Ensure that the UE has an IP address before continuing the test.
Otherwise, it might happen we ping before the UE is connected.
Do not do this in do-ra and phytest, as they use --noS1, which implies
statically assigned IP address, so IP address check always succeeds(!).
Make RFsim start up faster by starting core and RAN start at the same
time. This speeds up because we do not wait for "healthy" containers
serially, but parallely.
For the RAN, it is safe to start gNB and UE at the same time in SA mode
(as the UE will only attach once the radio, and hence the full gNB, is
ready).
We do not start in parallel in do-ra and phytest, as in these modes the
gNB first has to write a UE-specific configuration file. If we start
both gNB and UE at the same time, the UE might try to read the file
before it is written, leading to a failure.
Jaroslava Fiedlerova