LTE eNodeB

For information on Artiza Networks’ latest generation of LTE-A eNodeB testers, visit our DuoSIM-Advanced page.

Traffic Generations

Traffic Generation from Micro to Macro

DuoSIM Manger offers a series of procedure oriented testing tools for C/U-plane performance evaluation. One of the most critical procedures for LTE eNB evaluation is RACH preamble. There are 64 possible preamble sequences in one radio subframe, and UE-SIM is capable of generating any types of the sequences to provide a complete RACH preamble testing (Figure 1). DuoSIM can also generate critical conditions with micro bursty traffic on most, if not all, of important procedures on Uu and S1/X2 interfaces. In terms of macro traffic stand point, Load Scheduler (Figure 2) is a powerful tool to discover unpredictable problems that arise only in real traffic conditions, caused by resource (memory/radio resource table/connection table) leaking and unexpected process priorities in protocol stack. Statistic information is most important to understand the network performance. All the counts on C-plane and U-plane can be captured for long duration (i.e., 72 hours) and U-plane counts can be displayed per Cell, UE and Logical Channel (Table 1/2)..

RACH Preamble Generation

Load Scheduler

C-plane Statistics

Statistic CountsDescription
Seq StartNo. of sequence started
Seq CompNo. of sequence completed
Seq Comp RateRate of sequence completed
Seq UnCompNo. of sequence uncompleted
Frm ErrNo. of protocol format errors
UnExp MsgNo. of unexpected messages in event list
UnExp EvtNo. of unexpected primitives in event list
UnExp IdNo. of unexpected connection identifiers
Data Set ErrNo. of errors occurred when IE reload procedure
Table OverNo. of connection tables exhausted
ConnTbl OverNo. of fails to create connection table
SDL Conn EntCount up when connection identifier created
SDL Conn RelCount up when connection identifier released
Global CountGlobal counter in SDL can be refer from any UE on any SDL

U-plane Statistic Counts

OverStatistic Counts
UE oriented
No. of TX MAC PDUs
TX MAC PDU size (byte)
TX MAC PDU rate (Mbps)
No. of aborted TX MAC PDUs
Aborted TX MAC PDU size (byte)
No. of RX MAC PDUs
RX MAC PDU size (byte)
RX MAC PDU rate (Mbps)
No. of TX MAC PDU acknowledged
No. of RX MAC PDU aborted
No. of first RX MAC PDU
No. of first TX MAC PDU acknowledged
BLock Error Rate (BLER) (No. of retransmission of hybrid ARQ)
First BLER (No. of 1st retransmission of hybrid ARQ)
No. of TX RACH Preamble
No. of RX RACH Response
No. of TX Message3
No. of TX Message3 aborted
Logical Channel
Logical Channel)
No. of TX RLC PDUs
No. of TX RLC PDU size (byte)
TX RLC rate (Mbps)
No. of RX RLC SDUs
RX RLC SDU size (byte)
RX RLC SDU rate (Mbps)
No. of RX RLC PDUs
RX RLC PDU size (byte)
RX RLC PDU rate (Mbps)
No. of TX RLC SDUs
TX RLC SDU size (byte)
RLC SDU rate (Mbps)
RLC buffer size (byte)
No. of aborted RLC SDUs due to buffer overflow
No. of aborted RLC SDUs due to buffer abortion control
TX PDCP PDU size (byte)
TX PDCP PDU rate (Mbps)
RX PDCP PDU size (byte)
RX PDCP PDU rate (Mbps)
TX PDCP SDU size (byte)
TX PDCP SDU rate (Mbps)
RX PDCP SDU size (byte)
RX PDCP SDU rate (Mbps)
No RX PDCP aborted
No. of error packet
No. of PN error bit
No. of PN synchronized bit error
Bit error rate
PN slip counter
Delay (msec)
Uplink TPCPUSCH Tx power (dBm)
PUCCH Tx power (dBm)
Sounding-RS Tx power (dB)