Changes between Version 9 and Version 10 of Tutorials/k0SDR/Tutorial26


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Timestamp:
Oct 3, 2019, 6:59:00 PM (5 years ago)
Author:
pnetalkar
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  • Tutorials/k0SDR/Tutorial26

    v9 v10  
    11== LTE Traffic Trace Collection ==
    2 This wiki page contains the tutorial to collect traffic traces for realtime application such as video, web, mail services etc. at RLC, MAC and PDCP layer of LTE protocol stack in ORBIT testbed using OpenAirInterface (OAI) emulation platform. Users were connected over the air using b210 USRP and data/logs recorded at eNodeB were extraced using standard linux tools. A high level system diagram is given below.
     2This wiki page contains the tutorial to collect traffic traces for realtime application such as video, web, mail services etc. at RLC, MAC and PDCP layer of LTE protocol stack in ORBIT testbed using OpenAirInterface (OAI) emulation platform. Users were connected over the air using b210 USRP and data/logs recorded at eNodeB (eNB) were extraced using standard linux tools. A high level system diagram is given below.
    33
    44||||||Figure 1: System Diagram - Trace Collection||
    … …  
    66
    77=== Description ===
    8 For this experiments we need UEs (User Equipment), eNB (eNodeB) having b210 USRP, two other nodes for EPC (Evolved Packet Core) and a server to test connectivity and bandwidth. We have used grid sandbox with node8-7 as eNB; node13-7, node13-14 and node8-14 as UEs; node2-2 as EPC; node3-2 as server. More users can be added but we have tested with just 3 users in this experiment. A detailed system diagram with list of all the attached interfaces is given below. This tutorial will cover following sections:
     8For this experiments we need UEs (User Equipment), eNB having b210 USRP, two other nodes for EPC (Evolved Packet Core) and a server to test connectivity and bandwidth. We have used grid sandbox with node8-7 as eNB; node13-7, node13-14 and node8-14 as UEs; node2-2 as EPC; node3-2 as server. More users can be added but we have tested with just 3 users in this experiment. A detailed system diagram with list of all the attached interfaces is given below. This tutorial will cover following sections:
    99* Setup OAI emulation framework
    1010* Connecting UE to LTE network
    … …  
    113113=== Application Design ===
    1141141) Test Application
    115    * Ping and Perf:
     115   * Ping and Perf: These standard  linux  utility  tools  were used in our experiment of trace extraction. Ping is a network connectivity testing tool whereas iperf is a bandwidth testing tool, we
     116     used ping and TCP variant iPerf3 between UEs and LAN server for trace collection at eNB.
     117     Ping can be started using {{{ping -c 120 8.8.8.8}}} at UE where {{{8.8.8.8 }}} represents IP address of google server.\\
     118     To start iperf: \\
    116119
     120     At UE run the following command :\\
     121     {{{iperf3 -s}}}\\
     122
     123     At Server run the following command :\\
     124     {{{iperf3 -V -c 172.16.0.2}}}\\
    1171252) Video Application
    118126