How To run OAI eNB (No S1) with USRP X310

1.Things need to be done

1.1.1 Install a standard 32 or 64-bit 14.04 system

Nothing to tell. Note that, please install the system with networkin order to get some updates. Or, you may update your system manually.

Some commands may be: apt-get update, apt-get dist-upgrade.

1.1.2 Remove Power management

Remove all power management features inthe BIOS (sleep states, in particular C-states) and CPU frequency scaling(Intel SpeedStep). Insome cases, you can also do this with cpufreqtool.

• check this using this command: watch grep \"cpu MHz\" /proc/cpuinfo
• have a look at this link for further information
• you may need to add intel_pstate=disable to the Linux boot options, i.e GRUB_CMDLINE_LINUX_DEFAULT="quiet intel_pstate=disable" in /etc/default/grub, then perform update-grub

1.1.3 Lowlatency setup

To install Ubuntu 14.10 kernel 3.17 on topof Ubuntu 14.04, 64-bit architecture and lowlatency.

version=3.17 

wget -r -e robots=off --accept-regex"(.*lowlatency.*amd64)|(all).deb" http://kernel.ubuntu.com/~kernel-ppa/mainline/v${version}-utopic/ 

dpkg -i kernel.ubuntu.com/*/*/*/*deb

After areboot, uname -a shouldgive the following output:

Linux [NAME] 3.17-lowlatency #201408132253 SMPPREEMPT Thu Aug 14 03:01:44 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

1.2 Install Useful software

In order to edit and analyze configuration filesand log files, you need also install some other software. Which are:

cmake, vim, eclipse, wireshark,ittianalyzer, subversion, git, (updating ……..)

As to wireshark & ittianalyzer, you canfollow this post to finish the installation and configure.

(https://twiki.eurecom.fr/twiki/bin/view/OpenAirInterface/IttiAnalyzer)

1.3 UHD installation

You can follow the ETTUS’s installationguide, or you can use the autobuild script provided by OpenLTE project.(http://sourceforge.net/p/openlte/wiki/Installing%20OpenLTE/)

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> 

As a non-root user, give the followingcommand:

mkdir gnuradio

cd gnurdio

wgethttp://www.sbrac.org/files/build-gnuradio

chmod a+x build-gnuradio

./build-gnuradio -v

You will be asked for the root passwordby the install script. The whole procedure can take up to 3 hours! It willdownload GNURadio , UHD and all the necessary dependencies.

Check the communication with your Ettus SDR:
Connect your SDR to one of the USB3 interfaces, and run:

uhd_usrp_probe

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>