CSAI

CSAI User Guide

1. System and Software Configuration Details

srsLTE Version: 18.9.0

Ubunto Distro: 18.04.4

Testing USRPs: Ettus Research B210 and B205 Mini

USRP uhd version: v 3.15.0.0

This guide used an Intel NUC2 and a single Ettus Research USRP (B210 or B205 Mini).

2. Installing srsLTE

1. Git Clone srsLTE reposity (https://github.com/srsLTE/srsLTE)

2. Using git checkout, checkout srsLTE release_18_9

3. Build and install srsLTE using instructions found in srsLTE Github

4. Verify version of srsLTE

srsLTE verification

3. Verify USRP UHD Drivers

1. Install UHD Drivers using the Ettus Research Install Guide for Linux **This is for the Ettus Research Line of USRPS

2. Install uhd v 3.15.0

3. Verify uhd installation by using the terminal command “uhd_find_devices”

uhd version

4. Searching for LTE EARFCN (E-UTRA Absolute Radio Frequency Channel Number) to use for the CSAI program in a later step

1. srsLTE cell_search function

   1. This function is located: /srsLTE/build/lib/examples/

   2. To run the cell_search function: “./cell_search -b <band>”

   3. This allows you to find an EARFCN to use when running the srsUE.

   4. Example Output after function is finished

srsLTE cell_search expected output

5. srsLTE Modifications

1. Configuration Files

   1. To record packets and logs, a srsLTE configuration file must be edited.

   2. The srsLTE config file is located: ~/.config/srslte/ue.conf

   3. Modify the [pcap] and [log] sections

CSAI Console output example

7. Wireshark Results

   1. Open the ue.pcap to see IMSI/TMSI and SIB/MIB capture in Wireshark

   2. Example of captured captures

Wireshark Analysis