CS8Mobile Device Test System

CS8Mobile Device Test System
CS8-TS-LTE-LTE-RRM
User Manual

Spirent
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This manual applies to CS8 Version 1.20 or higher.
Page Part Number: 71-006839, Version A0
Copyright© 2012 Spirent. All Rights Reserved.
All of the company names and/or brand names and/or product names referred to in this document, in particular, the
name “Spirent” and its logo device, are either registered trademarks or trademarks of Spirent plc and its
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trademarks are the property of their respective owners.
The information contained in this document is subject to change without notice and does not represent a
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however, Spirent assumes no responsibility or liability for any errors or inaccuracies that may appear in the
document.

Table of Contents
1. Introduction .......................................................................................... 2
1.1. Overview ........................................................................................... 2
1.2. Support Information ........................................................................... 2
1.3. References ........................................................................................ 2
1.4. Test Execution Diagram ...................................................................... 3
2. LTE-LTE Dual Cell Idle Mode Testing ...................................................... 4
2.1. Overview ........................................................................................... 4
2.2. Supported Platforms .......................................................................... 4
2.3. Customizing Test Cases ..................................................................... 5
2.3.1. Additional Information ............................................................................ 6

1. Introduction
1.1. Overview
Spirent CS8 Mobile device Test System comes with Reference Test Packs for testing LTE-
LTE Dual Cell Idle Mode based scenarios. This test pack provides test environment ready
for testing LTE-LTE Dual Cell Idle mode scenarios with minimum customization. It also
provides various possibilities that can be explored in this versatile tool kit.
Sub Feature
Cell Selection,
Intra E-UTRAN,
Serving cell
becomes nonsuitable
Cell
reselection to
different
frequency band
Test Case
No.
Test Objective
3601 UE does not do cell reselection when serving cell and
neighboring cell power becomes same and (Sserving
cell

Chapter One: Introduction | 3
1.4. Test Execution Diagram
The diagram below presents the sequence of operations performed during the execution
of a test suite from Test Manager.
Start Session
Validate Suite
Failure
Success
Connect to the Instruments
Success
Execute Tests
Failure
Disconnect from Instruments
End Session

2. LTE-LTE Dual Cell Idle Mode Testing
2.1. Overview
This test pack is designed to provide test scenarios for testing LTE-LTE Dual Cell Idle
mode feature. Keeping mobility with idle mode in mind, this test suite provides both
success and negative scenarios to test UE’s behavior.
In field scenario, geographical area is divided into various cells for better coverage and
manageability. Considering dual LTE cell scenario, UE in idle-mode, has to perform cell
reselection if it is at the cell boundary or any of the reselection criteria is satisfied.
Hence, it is very important to evaluate this procedure, as the impact is on maintaining
overall connectivity of UE to the LTE network while in Idle Mode. The decision points to
perform cell reselection needs to be evaluated and with precision.
The LTE-LTE Idle Mode Test Pack enables you to test UE for various Cell Reselection
scenarios ranging from cell reselection between LTE cells on different frequency, ranking
based reselection etc.
Support is provided for:
• LTE Bands: 1, 2, 3, 4, 5, 7, 10, 12, 13, 14, 17, 20, 24, 25 and 26.
• LTE Bandwidth: 1.4, 3, 5, 10, 15 and 20.
NOTE: 1.4M, 3M, 15M,and 20MHz bandwidths and Band Classes 1, 2, 3, 5, 12, 20,
24, 25, and 26 have not been fully validated.
2.2. Supported Platforms
The Reference Test Packs support the following LTE-LTE Dual Cell platforms:
• E2010S
• SR3620 Landslide PDSN Emulator (R610)
• SR3920 V2 Application Server (R610)
• Cisco 1921 Router
• Dell 6248 Switch

Chapter Two: LTE-LTE Testing | 5
2.3. Customizing Test Cases
This section provides detailed instructions to customize test cases from the test pack to
your requirements for testing.
To customize a test case:
1. Select the test case from Test Manager. Under the Test Case Parameters
pane,expand the Initial Conditions step, as shown in Figure 2-1.
Figure 2-1: Test Manager – Selecting a Test Case
2. Click Subtype.
The Spirent Interactive Editor window displays, as shown in Figure 2-2.

6 | CS8 – LTE-LTE Idle Mode: User Manual
Figure 2-2: Spirent Interactive Editor
3. The configurable items display. Update the corresponding parameters and click OK
to save your changes.
2.3.1. Additional Information
The following tips can assist you in configuring LTE-LTE-RRM related features.
1. Updating multiple configurations at the same time is only possible in the Initial
Conditions Step 1. All other steps only allow you to update parameters associated
with a single item.
2. Testing LTE-LTE-RRM-specific test cases requires you to modify the dual cell of the
LTE and Core Network part.
3. You can change or modify band or EARFCN parameters by navigating to
SS>LTE>eNodeB[]>eNodeB>PHY, as shown in Figure 2-3.
After making changes, click OK.

Chapter Two: LTE-LTE Testing | 7
Figure 2-3: Selecting the Frequency Band
4. Although Test Manager allows you to add AT commands directly into the test case,
defining AT command in UE file is a best practice for managing AT commands
throughout the suite.
5. You can type in the AT commands for the UE in the UE file, name it, and save the
changes for future use, as shown in Figure 2-4. For more information, refer to the Test
Manager Reference Manual.

8 | CS8 – LTE-LTE Idle Mode: User Manual
Figure 2-4: Entering AT Commands
6. To use AT commands in your test case:
a. In the Test Case Step select Type as "Action" and Subtype as
"ExecuteATCommand".
b. Click the button.
A new Spirent Interactive Editor window displays, as shown in Figure 2-5.
c. Enter the command name within square brackets and click OK.

Chapter Two: LTE-LTE Testing | 9
Figure 2-5: Using AT Commands
7. For more information, refer to the Test Manager User Manual.
Figure 2-6: Cell Reselection Test Case during Test Execution
Figure 2-7 shows the CS8 Interactive Tester GUI during the test execution. In this
example,there are two eNodeBs.

10 | CS8 – LTE-LTE Idle Mode: User Manual
Figure 2-7: CS8 Interactive Tester GUI during Test Execution