NetHawk LTE EAST for eNB Testing KEY FEATURESKEY Flexible and scalable platform and structure (monitoring option) Smooth real-time protocol monitoring with the NetHawk M5 Easy-to-use graphical test case and message editing tools network units and anATCA chassis High performance hardware EAST with AMC blades, under heavy load Comprehensive simulation of control and user plane testing through S1and X2interfaces Effective LTE enhanced NodeB (eNB)functional and load Flexible load and functional testing tool for LTE eNB

SPEC SHEET NetHawk EAST LTE for eNB Testing

CHALLENGES FOR ENB TESTING LTE eNB Testing Objectives The 3GPP organization defined the next-generation mobile architecture The NetHawk EAST LTE supports detailed eNB wrap-around testing in as long-term evolution (LTE) and system architecture evolution (SAE). terms of: Together, they provide better end-user services and advanced S1 control- and user-plane testing features combined with an efficient network architecture. X2 control-plane testing Testing LTE and SAE bring new challenges for eNB testing: NAS control-plane testing eNB includes all radio-related functions within the same unit Handover testing LTE radio interface is 10 times faster than in WCDMA Transparent user-plane Radio measurement reports are received at eNBs, but invisible IP user-plane data generation in the S1 interface Portable EPC for field trials eNBs are directly connected to each other eNB stress testing under maximum load All this makes radio interface testing and optimization around eNBs PRODUCT PLATFORM much more challenging. Additionally the all-IP architecture of LTE The NetHawk EAST LTE product consist of the portable TravelHawk and SAE increases the need for sophisticated testing tools to verify hardware or the high-performance ATCA hardware and scalable . QoS, QoE, data applications and video broadcasting. TravelHawk With TravelHawk, the NetHawk EAST LTE becomes a compact, portable MME testing tool. 3G S10 MME PDN GW S11 S5 eNB S1-MME S-GW X2 S1-U eUTRAN Evolved Packet Core

CPRI/ LTE OBSAI

SOLUTION: ENB WRAP-AROUND TESTING ATCA The NetHawk EAST LTE enables comprehensive eNB wrap-around testing. The Advanced Telecom Computing Architecture (ATCA) hardware It wraps eNB by using S1 and X2 interfaces, as well as simulates both platform for EAST LTE offers a scalable platform with high packing density control plane and user plane. and reliability. The NetHawk EAST LTE can effectively be used to execute eNB functional The ATCA platform allows multi-user functionality and it can easily be and load testing. In functional testing, the NetHawk EAST LTE can send or enhanced to a bigger testing system. receive any protocol messages of the supported interfaces. It also generates and receives IP user-plane messages. At the receiving side, the NetHawk The smaller ATCA chassis allows 16 simultaneous users for functional EAST LTE can calculate BER from the received PRSB sequence. testing. BER testing provides an efficient way to optimize the eNB implementation. In load testing, the NetHawk EAST LTE simulates heavy load of control-plane and user-plane traffic. By interworking toward the test mobiles, the EAST LTE provides comprehensive statistics of the LTE Uu L1 and L2 layers. Normal testing with LTE test mobiles can be fully configured and executed from the EAST LTE GUI. Transparent IP routing can test existing IP services. At the S1 interface, IP routing takes care of the automatic mapping of IP user plane of UEs to GTP-U tunnels.

MME/SGW simulation NPU–eNB under Maximum User-Plane Load The network processor unit (NPU) efficiently accelerates the NetHawk EAST LTE user plane. Multiple NPU cores take care of GTP-U, PRBS, IP routing and IPSec. Both platforms, the TravelHawk and ATCA, support NPU, allowing you to boost traffic until eNB operates under maximum load. S1 The bigger ATCA chassis gives you the possibility to add 14 different cards and add more parallel users.

x2 Uu

eNB simulation UE simulation eNB (SUT) NetHawk EAST LTE for eNB Testing

MESSAGE LIBRAIRIES AND TEST CASE PACKAGES The NetHawk EAST LTE includes message libraries for 3GPP S1-AP, X2 and NAS protocols and control interface protocols for LTE test mobiles. Test case packages include support for testing eNB through S1 and X2 interfaces. Test cases are defined by using a graphical telecom oriented language. The NetHawk EAST LTE servers provide link layer services to test cases. For example, SCTP and GTP servers are available at the S1 interface. USER INTERFACE The NetHawk EAST LTE has both a graphical user interface (GUI) and a command line interface (CLI). The desktop includes launch menus −different tools test case editing, message library editing, test case execution, logging and reporting−grouped at the top line of the desktop. The configuration tools are available in the Commands section. The different servers as well as their status and logging capabilities can be followed and monitored by clicking the indicators in the Servers section. Test Case Editing Test cases for the NetHawk EAST LTE are defined by using a graphical Figure 3: NetHawk EAST ITF fl exible product structure EAST test case language, similar to SDL, the well-known language used for defining state machines in telecommunications. Test Execution For test case execution, the NetHawk EAST LTE has Test Case Runner, Load Runner and Test Suite Runner, all of which have the same basic framework. Load Runner adds capabilities for profiling the execution of several instances simultaneously. Statistical tables and graphs can also be used for monitoring the test progress. Test Suite Runner enables the scheduling of test case groups for execution at a given time. In all Test Runners, the simulation can be monitored in forms of message sequence charts, textual traces and state machine execution path follow-ups.

Figure 1: NetHawk EAST LTE test case editor

Message Editing The message libraries are delivered with the NetHawk EAST. However, if there is a need to update those libraries or a need to create a specific protocol for controlling the system under test or other test instruments for example, a graphical message library editing tool has been created for that purpose. It allows users to add, delete and modify message structures and information element fields and use the modified message templates in the test cases immediately.

Figure 4: NetHawk EAST LTE event trace view from Load Runner

Figure 2: NetHawk EAST LTE protocol builder NetHawk EAST LTE for eNB Testing

TEST PACKAGES IN DETAIL

S1 INTERFACE TESTING (MME/SGW) X2 INTERFACE TESTING (ENB) This package simulates MME and SGW toward eNB. The following procedures This package simulates eNB toward another eNB. The following procedures are are supported: supported: Uplink NAS transport (M) Handover preparation successful handover preparation failure Downlink NAS transport Handover cancel Attach (successful) X2 setup Attach reject Reset Attach failure (CORE) procedures Load information Authentication procedure Resource status reporting initiation resource status reporting Normal detach, power-off detach and idle-mode detach (MO/MT) eNB configuration update Idle mode TAU Handover preparation UE context release SN status transfer Service request success retry (MO/MT) UE context release Initial UE S1 setup procedure NAS transport procedure Initial context setup SUPPORTED PROTOCOLS Reset procedure (eNB triggered) NAS 3GPP 24301 Error indication procedure (eNB triggered) S1AP 3GPP 36413 v880 DataGen fixed/PRBS X2AP 3GPP 36423 v860 IP-routing for transparent data transfer TCP Security mode command procedure IP UE initiated dedicated bearer setup/release SCTP Paging procedure (MO/MT) GTP-U UE ESM failure IPSec Inter eNB X2 Intra MME/Serving GW handover Multiple dedicated bearer with TFT filtering Re-attach during datagen TAU success intra MME intra SGW idle mode Inter eNB S1 handover (Inter MME with Intra/Inter SGW) Service request pending TAU request retry UL NAS TAU request retry initial UE Delete bearers IPXpress TC indirect data forwarding IPXpress error indication Multiple PDN connectivity X2 handover IPXpress GTP UE context modification S1 flex support Emergency attach NW initiated dedicated bearer deactivation CS fallback with redirection S1

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EXFO is certified ISO 9001 and attests to the quality of these products. This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. EXFO has made every effort to ensure that the information contained in this specification sheet is accurate. However, we accept no responsibility for any errors or omissions, and we reserve the right to modify design, characteristics and products at any time without obligation. Units of measurement in this document conform to SI standards and practices. In addition, all of EXFO’s manufactured products are compliant with the European Union’s WEEE directive. For more information, please visit www.EXFO.com/recycle. Contact EXFO for prices and availability or to obtain the phone number of your local EXFO distributor. For the most recent version of this spec sheet, please go to the EXFO website at www.EXFO.com/specs. In case of discrepancy, the Web version takes precedence over any printed literature. sales contact [email protected], customer support [email protected]

2008 SPEAST-LTE.2AN © 2011 EXFO Inc. All rights reserved. Printed in Canada 11/02