Changes between Version 2 and Version 3 of Tutorials/g0WmLTE/Tutorial4-OAI/Tutorial2

Timestamp:

Nov 11, 2016, 7:35:30 PM (8 years ago)

Author:

msherman

Comment:

—

Tutorials/g0WmLTE/Tutorial4-OAI/Tutorial2

@@ -26 +26 @@
   1. 
  1. On pc4.instageni.rutgers.edu
-  1. Execute the following command as root {{{/opt/openairinterface5g/cmake_targets/lte_build_oai/build/lte-softmodem -O /opt/conf/enb.band25.tm1.rrh.usrpb210.conf}}} , which is to launch the softmodem with a known good configuration file. 
-  1. Add the {{{-x}}} flag to use visualizations over X11 forwarding.
-
+  1. Execute the following command as root
+  1. {{{/opt/openairinterface5g/cmake_targets/lte_build_oai/build/lte-softmodem -O /opt/conf/enb.band25.tm1.rrh.usrpb210.conf}}}
+   1. which is to launch the softmodem with a known good configuration file. 
+   1. Add the {{{-x}}} flag to use visualizations over X11 forwarding.
+   1. To use a different grid node as the RRH, you must edit the config file line {{{ remote_address = "10.10.18.2";}}} to the appropriate IP.
  1. After executing both run scripts, you should see the RRH node load a USRP image, and the eNB node start printing log messages.
  1. On node19-3
   1. Follow the instructions from the [wiki:Tutorials/g0WmLTE/Tutorial3 COTS UE tutorial] to connect.
   1. The UE should get an address, and be able to send traffic to the WAN.
+  1. You will start seeing messages appear in stdout on the RRH and eNB.
+  1. If you see messages like {{{UUULLULULLL}}} on either, the interfaces are experiencing under/overrun. This is caused by not meeting the roundtrip deadlines, either from processing power limits, or latency between the RRH and the eNB.