LTE Traffic Trace Collection

This wiki page contains the tutorial to collect traffic traces for realtime application such as video, web, mail etc. at RLC, MAC and PDCP layer of LTE protocol stack in ORBIT testbed using OpenAirInterface (OAI).Users were connected over the air using b210 USRPs and data/logs recorded at eNodeB were extraced using standard linux tools. A high level system diagram is given below.

Figure 1: System Diagram - Trace Collection

Description

For this experiments we need UEs, eNB which have b210s USRP, also we need two other nodes for EPC and Server. 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 UEs can be added but we have tested with just 3 users in this experiment. A detailed system diagram with list of all the interfaces is given below.

Figure 2: GRID OAI System Design Implementaion - Trace Collection