AirAccess WCDMA-HS UE Performance Tester Operations Manual

AirAccess WCDMA-HS UE Performance Tester

Operations Manual

ii AirAccess WCDMA Operations Manual

Spirent Communications 541 Industrial Way West Eatontown, NJ 07724 Phone: (732) 544-8700 FAX: (732) 544-8347 This manual applies to AirAccess WCDMA-HS and related system Page Part Number: 2700-68-000210, Version 1.10 Copyright © 2006, Spirent Communications, Inc. Printed in the USA. Technical Support is available 8:30 AM – 5:30 PM EST, Monday - Friday Phone support is available through Spirent Customer Care at 732-544-8700 Email support is available at [email protected]. Information furnished by Spirent Communications is believed to be accurate and reliable. However, no responsibility is assumed by Spirent Communications for its use. Specifications are subject to change without notice.

AirAccess WCDMA Operations Manual iii

TABLE OF CONTENTS Table of Contents ......................................................................................................................... iii What is in this Manual ................................................................................................................. v Terminology.................................................................................................................................. vi Related Documentation ............................................................................................................. viii 1.0. Introduction............................................................................................................................ 1

1.1. Overview.............................................................................................................................. 1 1.1.1. Product Highlights ........................................................................................................ 1 1.1.2. AirAccess WCDMA-HS Applications ......................................................................... 1

1.2. Theory of Operation............................................................................................................. 2 1.2.1. Base-Station-to-UE Network Model............................................................................. 2 1.2.2. AirAccess Network Model ........................................................................................... 3

1.3. Version History.................................................................................................................... 3 2.0. System Setup........................................................................................................................... 5

2.1. Overview.............................................................................................................................. 5 2.2. System Components............................................................................................................. 5

2.2.1. AirAccess WCDMA-HS Application Software ........................................................... 5 2.2.2. SR3420 WCDMA Network Emulator .......................................................................... 7

2.3. AirAccess WCDMA-HS Instrument Setup ......................................................................... 7 2.3.1. Connecting the AirAccess WCDMA-HS Controller PC and the SR3420 ................... 8 2.3.2. Connections for the RF Interface.................................................................................. 9

2.4. Logging on to the System Controller PC............................................................................. 9 2.5. Software Setup ................................................................................................................... 10

2.5.1. Initial Software Installation......................................................................................... 10 2.5.2. Copy Protection .......................................................................................................... 10 2.5.3. AirAccess WCDMA-HS Operations Manual............................................................. 11

3.0. Using AirAccess WCDMA-HS............................................................................................ 13 3.1. Powering on AirAccess WCDMA-HS .............................................................................. 13 3.2. Starting the AirAccess WCDMA-HS Software................................................................. 13 3.3. Ensuring Communication with AAWCDMA-HS ............................................................. 14 3.4. Loading Predefined Configurations................................................................................... 15 3.5. Connecting to the Instruments ........................................................................................... 16 3.6. Registering User Equipment (UE) ..................................................................................... 16 3.7. Placing a UE-Terminated CS Call ..................................................................................... 17 3.8. Placing a UE Initiated CS Call........................................................................................... 18 3.9. Placing a UE Initiated R99 or HS Packet-Switched (PS) Call .......................................... 19

4.0. Features................................................................................................................................. 21 4.1. Overview............................................................................................................................ 21 4.2. File Cabinet........................................................................................................................ 21

4.2.1. Restoring a Test Configuration................................................................................... 22 4.2.2. Viewing a Test Session Log ....................................................................................... 22

4.3. Configuring Network Components.................................................................................... 22 4.3.1. WCDMA Cells............................................................................................................ 23

4.3.1.1. WCDMA Cells – Configure Physical Parameters............................................................................25 4.3.1.2. WCDMA Cells – Configure SIB .......................................................................................................28 4.3.1.3. WCDMA Cells – Configuring Common Channels ...........................................................................29 4.3.1.4. WCDMA Cells – Copy/Paste............................................................................................................30

iv AirAccess WCDMA Operations Manual

4.3.2. WCDMA Node-Bs...................................................................................................... 30 4.3.3. Radio Network Controller (RNC)............................................................................... 31

4.3.3.1. RNC – Configuring Dedicated Channels .........................................................................................31 4.3.3.2. Functional (Non-RMC) Mode ..........................................................................................................31 4.3.3.3. RMC/FRC Mode...............................................................................................................................33 4.3.3.4 HS- Configure MAC-hs .....................................................................................................................35 4.3.3.5. RNC – Configure RLC (Dedicated Channels)..................................................................................36

4.3.4. Core Network (CN)..................................................................................................... 38 4.3.5. Multiple PLMN Selection........................................................................................... 39 4.3.6 User Equipment (UE) .................................................................................................. 40

4.4. Message Analyser and Test Events.................................................................................... 41 4.4.1. Message Analyser ....................................................................................................... 41 4.4.2 Test Events................................................................................................................... 43 4.4.3. Clearing, Saving and Recalling Message Analyser and Test Events Logs................. 43 4.4.4. Message Filtering........................................................................................................ 44

4.5. Options............................................................................................................................... 44 5.0. Test Procedures.................................................................................................................... 47

5.1. Mobility Management (Circuit Switched) Procedures ...................................................... 47 5.1.1. IMSI Attach ................................................................................................................ 47 5.1.2. IMSI Detach................................................................................................................ 48 5.1.3. Location Area Update with TMSI Allocation and/or Identity Enabled...................... 48 5.1.4. Periodic Location Area Update................................................................................... 49

5.2. GPRS Mobility Management (Packet Switched/GMM) Procedures................................. 49 5.2.1. PS Attach .................................................................................................................... 50 5.2.2. PS Detach.................................................................................................................... 50 5.2.3. Periodic Routing Area Update .................................................................................... 50

5.3. PS Calls at Different Data Rates........................................................................................ 51 5.4. RAB Reconfiguration (Dynamic QoS Modification) of PS Calls ..................................... 52

5.4.1. Setup Multiple Radio Access Bearers with Different Data Rates .............................. 53 5.4.2. Procedure for RAB Reconfiguration .......................................................................... 54

5.5. NAS State Machine Control .............................................................................................. 54 5.5.1. Identity Procedures ..................................................................................................... 54 5.5.2. Authentication Procedure............................................................................................ 55

5.6. OCNS................................................................................................................................. 56 5.7. Reference Measurement Channels (Call Setup) ................................................................ 57

5.7.1. RMC Calls at Different Data Rates ............................................................................ 58 5.8. BER/BLER Measurements ................................................................................................ 60 5.9. Fixed Reference Channels (Call Setup)............................................................................. 62

5.9.1. RMC Calls at Different Data Rates ............................................................................ 63 5.10. Throughput and CQI Measurements................................................................................ 64

5.10.1. MAC-hs STATISTICS ............................................................................................. 65 5.10.1.1. Normal HSDPA Statistics...............................................................................................................65

Appendix – SR3420 Panel Descriptions and External Interfaces ......................................... 69 A.1. Front Panel Description .................................................................................................... 69 A.2. Rear Panel Description...................................................................................................... 71 A.3. SR3420 Operating and Environment Characteristics ....................................................... 72

AirAccess WCDMA Operations Manual v

WHAT IS IN THIS MANUAL Chapter 1 - Introduction Describes the manual and its subject matter. In addition, provides an overview of the product, provides definitions for related terminology, and provides reference to other documents for additional information. Chapter 2 – System Components and Installation Describes the components of an AirAccess WCDMA-HS system and describes the procedure for installing and updating AirAccess hardware and software. Chapter 3 – Using the AirAccess WCDMA-HS System Describes the system start-up sequence, software initialization and basic steps to begin a test session. Chapter 4 – Features of AirAccess WCDMA-HS Describes AirAccess functionality, including network configuration, test procedures and AirAccess WCDMA-HS tools helpful for troubleshooting. Chapter 5 – Test Procedures Describes various test procedures used with the AirAccess WCDMA in both the idle mode and connected mode. This lists the various operations such as cell-selection, cell re-selection, handovers, PS calls and QoS operations, and SMS features. Appendix – Panel Description and External Interfaces Details about the front and rear panels of the 3420 instrument.

vi AirAccess WCDMA Operations Manual

TERMINOLOGY This manual uses the following abbreviations and acronyms.

ACRONYM DEFINITION 3GPP 3rd Generation Partnership Project AM Acknowledged Mode CD Compact Disc CN Core Network (includes both MSC and SGSN) CRC Cyclic Redundancy Check CS Circuit Switched DNS Domain Name Server FACH Forward Access Channel FRC Fixed Reference Channel FTP File Transfer Protocol GGSN Gateway GPRS Support Node GPRS General Packet Radio Service GSM Global System for Mobile Communications GUI Graphical User Interface HARQ Hybrid Automatic Repeat Request HSDPA High Speed Downlink Packet Access HS-DPCCH Dedicated Physical Control Channel (uplink) for HS-DSCH

HS-DSCH High Speed Downlink Shared Channel

HS-PDSCH High Speed Physical Downlink Shared Channel

HS-SCCH Shared Control Channel for HS-DSCH

IMSI International Mobile Subscriber Identity Inter-RAT Inter-generation-Radio Access Technology IP Internet Protocol LAI Location Area Identifier MAC-hs Media Access Control-high-speed MCC Mobile Country Code MNC Mobile Network Code MSC Mobile Switching Center Node-B Base Node, similar to a BTS in GSM network OCNS Orthogonal Channel Noise Simulator OS Operating System PC Personal Computer PCH Paging Channel

AirAccess WCDMA Operations Manual vii

ACRONYM DEFINITION PDCP Packet Data Convergence Protocol PS Packet Switched P-TMSI Packet- Temporary Mobile Subscriber Identity QPSK Quadrature Phase Shift Keying RAB Radio Access Bearer RACH Random Access Channel RAI Routing Area Identifier RLC Radio Link Control RMC Reference Measurement Channel RNC Radio Network Controller RRC Radio Resource Control (NOTE: The acronym definition

in the 34.121 specification is incorrect for this context.) SCCPCH Secondary Common Control Physical Channel SF Spreading Factor SGSN Serving GPRS Support Node SIB System Information Block SMS Short Message Service SRB Signalling Radio Bearer TCP Transmission Control Protocol TFC Transport Format Combination TM Transparent Mode TMSI Temporary Mobile Subscriber Identity TRX Transceiver TS Technical Specifications TTI Transmit Time Interval UE User Equipment UL-DPCH Uplink Dedicated Physical Channel UM Unacknowledged Mode WCDMA Wideband - Code Division Multiple Access

viii AirAccess WCDMA Operations Manual

RELATED DOCUMENTATION The listed documents below provide additional information about subjects covered in this manual.

[1] 3GPP TS 34.121 Terminal Conformance Specification Radio Transmission and Reception (FDD)

[2] 3GPP TS 34.123 User Equipment Conformance Specification

[3] 3GPP TS 34.109 Special Conformance Testing Functions

[4] 3GPP TS 25.301 Radio Interface Protocol Architecture

[5] 3GPP TS 25.302 Services Provided by Physical Layer

[6] 3GPP TS 25.211 Physical Channels and Mapping of Transport Channels onto Physical Channels (FDD)

[7] 3GPP TS 34.108 Conformance Testing

[8] 3GPP Typical Radio Interface Parameter Sets (FDD) Version 1.4 May 2001

[9] 3GPP TS 25.321 MAC Protocol Specification

[10] 3GPP TS 25.322 RLC Protocol Specification

[11] 3GPP TS 25.323 Description of PDCP Protocol Specification

[12] 3GPP TS 25.324 Description of BMC Protocol Specification

[13] 3GPP TS 25.331 RRC Protocol Specification

[17] 3GPP TS 25.212 Multiplexing and Channel Coding

[18] 3GPP TS 25.213 Spreading and Modulation

[19] 3GPP TS 25.214 Physical Layer Procedures

[20] 3GPP TS 25.215 Physical Layer Measurements

[21] 3GPP TS 25.303 Interlayer Procedures in Connected Mode

[22] 3GPP TS 25.304 UE Procedures in Idle Mode and Procedures for Cell Reselection in Connected Mode

1.0. INTRODUCTION

1.1. Overview The AirAccess WCDMA-HS UE Performance Tester is a scaleable network emulation platform designed for Wideband – Code Division Multiple Access (WCDMA) User Equipment (UE) manufacturers, technology providers and service providers. It addresses various aspects of WCDMA testing, up to and including Release 5 of the specification, including High-Speed Downlink Packet Access (HSDPA). AirAccess WCDMA-HS combines powerful application software with a high-speed protocol-processing engine to provide a complete UE performance-analysis solution.

1.1.1. Product Highlights Accurate emulation of real-world UE deployment scenarios The AirAccess WCDMA-HS provides Dynamic Emulation, which not found in one-box radio test sets or in script-driven conformance test systems. Dynamic emulation means that the simulated network reacts and replies with realistic messaging and timing, producing accurate and thorough emulation of the network for all test cases. Dynamic network emulation is essential in successfully enacting a broad range of WCDMA Release 5 deployment test scenarios. Real-time WCDMA Release 5 network emulation AirAccess WCDMA-HS implements powerful real-time state machines, similar to those found in commercial WCDMA network infrastructures. This ensures radio-network and core-network performance and timing that accurately represent the performance observed on live WCDMA networks. Powerful user interface for easy test scenario creation, without test script generation or software programming An interactive, user interface allows configuration of network components, including Cell, Node-B and RNC components. This allows intuitive custom configuration of broadcast messages, cell powers, asynchronous event triggering and unsolicited event handling.

1.1.2. AirAccess WCDMA-HS Applications Applications for AirAccess WCDMA-HS include:

• Product Development

• Design Verification

• Product Qualification

2 AirAccess WCDMA Operations Manual

• Conformance Test

• Competitive Analysis

• Performance Analysis

• Inter-operability Tests.

1.2. Theory of Operation

1.2.1. Base-Station-to-UE Network Model A UE typically operates in a very complex network. Components include multiple cells, multiple Node-Bs, and a Radio Network Controller (RNC), and a Core Network (CN). An example of a typical WCDMA network is shown in Figure 1.

WCDMA Logical View

Internet CoreNetwork RNC

Node B

Cell

UE

UE

Internet

AirAccess WCDMA Physical View

Figure 1 - Sample Configuration of a Typical WCDMA Network with AirAccess WCDMA-HS

Introduction 3

1.2.2. AirAccess Network Model AirAccess eliminates the need for a complex test network by providing the equivalent functionality in a lab-based solution. The AirAccess WCDMA-HS hardware has the ability to create the radio environment necessary for mobile testing, while implementing the software protocols (NAS, RRC, MAC, and RLC) needed to verify a UE’s ability to interoperate.

1.3. Version History Version 1.1 Support of the following features:

• Firmware download support

• Improved data throughput on HSDPA calls Version 1.0 Support of the following features:

• HSDPA Packet Switched (PS) data call for UE category 1-6, category 11 and category 12.

• FRC call with H-Set1-5 (QPSK and 16-QAM for H-Set 1 to 3)

• Media Access Control-high-speed (MAC-hs) statistics

• Configurable MAC-hs scheduling

• Up to 5 High Speed Physical Downlink Shared Channel (HS-PDSCH) channels

• Up to 4 Shared Control Channel for HS-DSCH (HS-SCCH)

• Uplink Dedicated Physical Control Channel (uplink) for HS-DSCH (HS-DPCCH) with 3.4 kbps SRB and 64 kbps PS Radio Access Bearer (RAB) on UL-DPCH

• Uplink HS-DPCCH with 2.2 kbps SRB and12.2 kbps RMC RAB on Uplink Dedicated Physical Channel (UL-DPCH).


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2.0. SYSTEM SETUP

2.1. Overview The AirAccess WCDMA-HS UE Performance Tester provides an integrated test solution for evaluating WCDMA User Equipment (UE).By combining advanced network emulation software with a scalable hardware interface; AirAccess WCDMA-HS provides a highly configurable and powerful system for simulation of an entire WCDMA network air interface. This chapter explains how to configure your AirAccess WCDMA-HS system:

Guided Tour of System Components Section 2.2 on page 5

Connecting the Instruments Section 2.3 on page 7

Logging onto the System Controller PC Section 2.4 on page 9

Software Installation and Updates Section 2.5 on page 10

Accessing the Operations Manual Section 2.5.3 on page 11

2.2. System Components The instruments and software that comprise an AirAccess WCDMA-HS system vary based on the configuration. The major components of an AirAccess WCDMA-HS system include:

• AirAccess WCDMA-HS Application Software.

• SR3420 Network Emulator.

The following sections describe each of the components in more detail.

2.2.1. AirAccess WCDMA-HS Application Software The AirAccess WCDMA-HS software is a Windows-based application that provides the ability to configure and control a wide range of emulated wireless network infrastructure components from within an easy-to-use Graphical User Interface (GUI).The AirAccess WCDMA-HS complements this flexibility with a real-time message analyser, test events logger, and a file cabinet for fast retrieval of stored configuration files and test logs.


Figure 2 - AirAccess WCDMA-HS Software

At the center of the AirAccess WCDMA-HS application screen is a graphical depiction of the emulated network. The icons provide the user with an access point for configuring various elements such as RABs for dedicated channels (RNC level) or common channels (Cell level). AirAccess WCDMA-HS application software simplifies the testing process by providing GUI-driven:

• Configuration of broadcast System Information Blocks (SIBs).

• Configuration of network topology (i.e. RNC, Node-Bs, etc.) and parameters (i.e. frequency, band, power, etc.).

• Real-time Layer 3 Radio Resource Control (RRC) and Core Network air interface message logging and parsing.

• Detailed test events and event logger.

• File cabinet for fast recall of stored configurations and log files.

• A variety of call processing features that enables UE testing in idle and connected modes.

System Setup 7

2.2.2. SR3420 WCDMA Network Emulator The SR3420 WCDMA Network Emulator, shown in Figure 3, provides the core emulation of a WCDMA Release 5 network.

Figure 3 – SR3420 WCDMA Network Emulator The SR3420 can emulate one Release 5 cell. The duplex RF port (N-type connector) directly connects to the UE under test. The transmit (downlink) signal is routed through a breakout loop to allow an external fading simulator to be connected in the downlink for multi-path emulation.

2.3. AirAccess WCDMA-HS Instrument Setup The following equipment is necessary to fully equip AirAccess WCDMA-HS:

• AirAccess WCDMA-HS System Controller PC

• SR3420 WCDMA Network Emulator

• Hardware key

• Two Ethernet cables

• Two SMA connectors

• Ethernet Router/Switch


2.3.1. Connecting the AirAccess WCDMA-HS Controller PC and the SR3420 Refer to Figures 3 and 46 (on page 71), and perform the following steps to make connections between the System Controller PC and the SR3420:

1. Refer to Figure 4. Using the short Ethernet cable supplied with the system, connect the Ethernet port on the back of the SR3420 to the Ethernet2 port.

Figure 4 - SR3420 Rear Panel Connections

2. Using an Ethernet cable, connect the expansion Ethernet interface (i.e. the PCI card slot) on the PC to the Router rear-panel 0x jack.

3. Using an Ethernet cable, connect from the SR3420 rear-panel Ethernet3 jack to the Router rear-panel 1x jack.

4. Connect the hardware key to the parallel port of the System Controller PC.

5. Optional: Connect a standard Ethernet cable from the Router rear-panel jack labeled FastEthernet 0/0 to your company’s LAN. This should be coordinated with your network administrator. Note that whenever the system is connected, there is an FTP server running on

the control PC.

NOTE: In this configuration, the devices connected to “FastEthernet” ports on the Router use 192.168.0.x IP addresses in a private network. The AirAccess WCDMA-HS Controller PC uses a fixed IP address of 192.168.0.35.The SR3420 uses a fixed IP address of 192.168.0.40. When the Router is connected to your company LAN via its “FastEthernet 0/0” port, it will attempt to obtain an IP address dynamically from your company LAN. If your company LAN is not configured to assign IP addresses automatically, you may need to set an IP address for the Router. Refer to the Router manual for more information. The IP address for configurationof the Router is 192.168.0.1.

System Setup 9

Figure 5 - Ethernet Connections between PC and SR3420

2.3.2. Connections for the RF Interface

1. Connect an N-type cable from the SR3420 front-panel to the RF test connector of the UE. The AirAccess WCDMA-HS does not supply the RF Test Connector. Additional adapters and cabling may be required between the N-type cable and the RF connector of the UE.

2. The AirAccess WCDMA-HS connections are complete.

2.4. Logging on to the System Controller PC The default account used for executing AirAccess WCDMA-HS applications is configured at the factory and includes administrative rights. To log on to the System Controller PC using this default account:

1. Power on the System Controller PC and monitor.

2. Wait for the Windows log on prompt to appear. You may be required to press CTRL-ALT-DEL after Windows completes booting to make the logon prompt appear.

3. When the Windows logon is presented, use the following logon:

Username: Administrator

Password: Sp!rent NOTE: While using this administrative account, it is possible to create additional user accounts. Use these accounts for regular execution of AirAccess WCDMA-HS applications. However, when installing new or updated AirAccess WCDMA-HS software, it is necessary to log on using the administrative default account.


NOTE: If the System Controller PC is connected to your company network via the FastEthernet 0/0 port on the Router, the use of the Administrator logon might cause a conflict. Consult your network administrator to establish an appropriate account on the System Controller PC. NOTE: The password is case sensitive.

2.5. Software Setup

2.5.1. Initial Software Installation

he AirAccess WCDMA-HS system comes with all system software installed on the instruments

ter at

OTE: AirAccess WCDMA-HS is designed to run in a Windows 2000 environment with

Tand on the System Controller PC. If this installation is damaged, please contact Spirent Communications Customer Care at +1 (732) 544-8700 or via the Customer Service Cenhttp://support.spirentcom.com/. NInternet Information Services (IIS) installed. WARNING: AirAccess WCDMA-HS requires a unique computer configuration to operate properly. Spirent Communications strongly discourages the attempted use of AirAccess WCDMA-HS on any computer other than the supplied custom-configured PC. Use this PC as the system controller and not as a generic PC. Because of the detailed and specific configuration used, generic Windows software may not function as expected, and its installation may adversely affect the operation of the AirAccess software.

2.5.2. Copy Protection

irAccess WCDMA-HS uses a security mechanism to control access to software functionality. t

ach Controller PC is delivered with the password already in place. However, if a reinstallation

1. Attach the hardware key (dongle) to the parallel port on the rear panel of the System

2. Launch AirAccess WCDMA-HS by double-clicking on the AirAccess WCDMA-HS

3. Select Enter Application Password… from the Help menu.

AThis security mechanism uses a hardware key (dongle) connected to the System Controller PC. Ialso requires you to enter a password in the AirAccess WCDMA-HS application software. You must enter the password once after each software installation. Eor upgrade is required, perform the following steps:

Controller PC.

desktop icon.

System Setup 11

4. In the Application Password box, enter the AirAccess WCDMA-HS password from the Password Certificate.

5. Verify that the password is entered correctly by checking for the “Password entered correctly – press OK to save” message in the status pane of the dialog box.

6. Click the OK button to save the password.

Figure 6 - Security Mechanism Password Window

Figure 7 - Security Window with Valid Password Entered

2.5.3. AirAccess WCDMA-HS Operations Manual This manual is available on the CD that accompanies this unit. Use Windows Explorer to view the D:\Manuals folder (replace “D:” with the appropriate letter if your CD drive is not D).This folder contains a file called AIRACCESS WCDMA-HS MANUAL.PDF. Additionally, a copy of the manual automatically saves to your hard drive during software installation. A Windows desktop icon is included for convenient access. You can view and print this file using Adobe Acrobat Reader. If Adobe Acrobat Reader is not installed on your System Controller PC, run the installation executable from the C:\Program Files\Spirent Communications\Shared\Acrobat Reader directory on the System Controller PC.

3.0. USING AIRACCESS WCDMA-HS The following chapter provides the instructions necessary to start the AirAccess WCDMA-HS software and establish basic communications with the UE under test. This chapter contains the following sections:

Powering on AirAccess WCDMA-HS Section 3.1, page 13

Starting the Software Section 3.2, page 13

Ensuring communication with AAWCDMA-HS Section 3.3, page 14

Loading a Predefined Configuration Section 3.4, page 15

Connecting to the Instruments Section 3.5, page 16

3.1. Powering on AirAccess WCDMA-HS Prior to powering on the AirAccess WCDMA-HS instruments, ensure that the hardware instruments are connected as specified in Section 2.3, AirAccess WCDMA-HS Instrument Setup on page 7. NOTE: In order to ensure proper initialization, it is necessary to follow the start-up procedure documented below. After the instruments are connected, perform the following steps:

1. Power on the Router. Wait three minutes to allow the router to boot.

2. Power on the System Controller PC and Monitor.

3. Logon to the System Controller PC as specified in Section 2.4, Logging on to the System Controller PC on page 9.

4. Power on the SR3420 chassis via the front panel switch and wait for three short beeps. The fan noise settles down as the active fan control gathers data.

3.2. Starting the AirAccess WCDMA-HS Software Prior to starting the AirAccess WCDMA-HS software, ensure that the instruments are powered on as specified in Section 3.1, Powering on AirAccess WCDMA-HS on page 13.


The AirAccess WCDMA-HS System Controller PC and the Spirent Communications instruments communicate with each other via TCP/IP over a private LAN. The IP address assignments for the PC and instruments are as follows:

• AirAccess WCDMA-HS System Controller PC 192.168.0.35 • SR3420 192.168.0.40

NOTE: In order to ensure proper communication between the AirAccess WCDMA-HS System Controller PC and the instruments, do not change the default IP addresses. AirAccess WCDMA-HS system software start-up is dependent on the selected AirAccess WCDMA-HS configuration. To start the AirAccess WCDMA-HS system software:

1. Power on the instruments. 2. Log on to Windows. 3. Double-click on the AirAccess WCDMA-HS shortcut icon found on the desktop.

3.3. Ensuring Communication with AAWCDMA-HS After you start the AirAccess WCDMA-HS software, it is necessary to configure HSDPA channels in the SR3420. From the AirAccess WCDMA-HS software, select Instrument > Configure…. The following dialog box displays.

Figure 8 - Configuring the SR3420

Select the Enable HSDPA Channel box as shown in Figure 7 to display the HSDPA channels. If you do not select the Enable HSDPA Channel box, the AirAccess-HS operates as a Release 99 network emulator.

Using AirAccess WCDMA 15

NOTE: To ensure proper communication between the AirAccess WCDMA-HS System Controller PC and the instruments, the default IP addresses must not be changed. The IP address of the SR3420 should be set to 192.168.0.40. To connect the SR3420 to other equipment and synchronize the 10 MHz reference clocks, select the 10 MHz External Reference button. To synchronize the transmit frames of the SR3420 with external equipment; select the External Synchronization Source button before connecting to the SR3420.

3.4. Loading Predefined Configurations The following sample configuration file is provided with the AirAccess WCDMA-HS installation:

• Single cell - This configuration file establishes a single-cell network on Region 1 using Mobile Country Code (MCC) = 001 and Mobile Network Code (MNC) = 01.

Select the configuration file from the AirAccess WCDMA-HS File Cabinet shown in Figure 9. Double-click on the file name to load the configuration.

Select Configuration

Here

Figure 9 - Selecting a Pre-defined Configuration NOTE: Refer to Chapter 4, Features for instructions on using AirAccess WCDMA-HS to configure the RF Parameters via the Node-B configuration.


3.5. Connecting to the Instruments Connect the instruments by selecting Instrument > Connect from the menus. During the process, the connection status displays at the bottom of the AirAccess WCDMA-HS application. NOTE: The SR3420 LED indicator must be Green before attempting to connect to the instruments. If this connection fails, verify the following:

1. All instruments are properly interconnected. Refer to Section 2.3, AirAccess WCDMA-HS Instrument Setup on page 7.

2. All instruments have been powered on in the order specified in Section 3.1, Powering on AirAccess WCDMA-HS on page 13.

3. The instruments and the System Controller PC have proper IP addresses. Refer to Section 3.2, Starting the AirAccess WCDMA-HS Software on page 13.

Upon successful completion of the connection sequence, start call processing. Call processing initiates the AirAccess WCDMA-HS dynamic internal base station state machines and enables WCDMA output. To start call processing:

1. Select Call > Start Call Processing. 2. Select Call > Stop Call Processing to stop the process.

3.6. Registering User Equipment (UE) After you start call processing, the powered-on UE cabled to the AirAccess WCDMA-HS instruments acquire WCDMA service as if it is in a real network environment. NOTE: The UE may not acquire WCDMA service if it is not programmed to acquire service on the channel/MCC/MNC combination configured for the AirAccess WCDMA-HS. The MCC and MNC of the UE may need updating to match the AirAccess WCDMA-HS. These parameters must match the parameters programmed into the USIM installed in the UE. NOTE: If the UE has already registered with the network, it does not re-register with that network unless a periodic timer has elapsed. After you restart the AirAccess WCDMA-HS system, or after re-starting call processing, the UE may need to be power cycled to have it re-register with the AirAccess WCDMA-HS.


Once the UE has acquired WCDMA service, it is necessary to identify the UE. This is accomplished via a UE Random Access Channel (RACH) message. In this case, you can initiate an International Mobile Subscriber Identity (IMSI) Attach, General Packet Radio Service (GPRS) Attach, Location Update Request, Routing Area Update (PS mode) or a combined Attach. Once the UE sends the initial RACH message, the UE and the AirAccess WCDMA-HS complete a network attach procedure. Upon successful registration with the network, the IMSI or Temporary Mobile Subscriber Identity (TMSI) display next to the UE icon in the Test Configuration window, which displays the values reported by the UE.

Figure 10 - UE icon After Successful Registration

3.7. Placing a UE-Terminated CS Call Once AirAccess WCDMA-HS has identified the UE, you can place a WCDMA to the UE. To initiate a mobile-terminated call, select Call > Initiate UE-Terminated Call. This triggers a call setup procedure within the AirAccess WCDMA-HS state machine and pages the UE. When the UE rings, you can answer the call. Once the call is established, the AirAccess WCDMA-HS Test Configuration window indicates a call is in progress. To end the call, select Call > End Call, or end the call from the UE.


Solid (filled) icon indicates cell is active on a call.

Figure 11 - Active Call Indications

3.8. Placing a UE Initiated CS Call Once AirAccess WCDMA-HS identifies the UE, you can place a WCDMA Circuit Switched [CS (voice)] call from the UE by using the normal dialing procedure for the UE. Any telephone number may be used. After a couple of rings, the UE connects to the AirAccess WCDMA-HS. Once the call is established, the AirAccess WCDMA-HS Test Configuration window indicates that a call is in progress. To end the call, select Call > End Call, or end the call from the UE. During CS calls, voice traffic loops back to the AirAccess WCDMA-HS. Verify this connection by speaking into the microphone of the UE and listening for the echo on the UE earpiece.


3.9. Placing a UE Initiated R99 or HS Packet-Switched (PS) Call Once the UE registers to AirAccess WCDMA-HS in Packet Domain, you can place a WCDMA Packet Switched (PS) call to the UE. There are two methods to initiate a UE-initiated PS call:

1. Originate the PS call from the UE directly (if this is an option on the UE). The AirAccess WCDMA-HS handles the PS call and when the call is established, the AirAccess WCDMA-HS Test Configuration window indicates a call is in progress. To end the call, select Call > End Call on the AirAccess WCDMA-HS software screen. Phones that have WAP support may use this option. Note that the AirAccess WCDMA-HS does not include a WAP server, although an external server may be used.

2. Initiate a packet session using a computer attached to the UE that is capable of a WCDMA packet session. This depends on the UE under test and may require installation of the appropriate drivers in the computer and also setting up network connections. After this is completed, you may initiate a PS call from the computer. The AirAccess WCDMA-HS handles the PS call and once the call is established, the AirAccess WCDMA-HS Test Configuration window indicates a call is in progress. To end the call, select Call > End Call.

In either case, you can check the IP address allocated for the packet session. Use the Core Network configuration screens to specify the IP address assigned to the UE.

Figure 12 - Active PS Call Indications

4.0. FEATURES

4.1. Overview This section introduces the advanced features of AirAccess WCDMA-HS.

4.2. File Cabinet The File Cabinet provides fast access to previously stored configuration files and test session log files. Enable or disable the display of the File Cabinet by selecting View>File Cabinet.

Figure 13 - File Cabinet


The File Cabinet displays Test Configuration Files (.tcf) and Test Session Logs (.mdb) stored in the main AirAccess WCDMA-HS directory and associated subdirectories. AirAccess WCDMA-HS comes installed with existing subdirectories for the Test Configuration Files and Test Session Logs. You can modify this directory structure to meet specific testing needs.

4.2.1. Restoring a Test Configuration To restore a saved test configuration from the File Cabinet, locate the file in the File Cabinet and double-click on the name. The software loads the saved configuration and the loaded parameters take effect as soon as you enable Call Processing.

4.2.2. Viewing a Test Session Log To view a saved Test Session Log from the File Cabinet, locate the file in the File Cabinet and double-click on the name. The test session log displays in the Message Analyser and Test Events windows. NOTE: Remember to always save collected data before opening a test session log file.

4.3. Configuring Network Components AirAccess WCDMA-HS emulates a wide range of WCDMA network elements, including:

• Core Networks (Serving GRPS Support Node [SGSN], Gateway GPRS Support Node [GGSN] and Mobile Switching Centers [MSCs])

• Radio Network Controller (RNC)

• Node B

• Cell with HSDPA channels The Test Configuration window is a graphical illustration of the emulated WCDMA network, as shown below in Figure 14. Each icon represents an access point for configuring or controlling network behavior. Enable or disable the display of the Test Configuration window by selecting View > Test Configuration. An infrastructure-based model is used to navigate the configuration and control of AirAccess WCDMA-HS. For example, in an infrastructure model, each cell can transmit an independent set of WCDMA overhead messages. In the AirAccess WCDMA-HS implementation, each cell (hexagonal) icon provides the access point to configure independent sets of broadcast channel messages. The CN icon is the access point for setting authentication variables or for launching authentication procedures. Each icon has associated functionality that is accessed via double clicks as well as left and/or right mouse clicks. The following sections describe the available functionality.

Advanced Features 23

Figure 14 - Test Configuration Window

4.3.1. WCDMA Cells The Cell icon in the Test Configuration window provides access to the following:

• RF and other Physical Parameters

• System information Block (SIB) parameters

• Common channel characteristics

• Scrambling codes

• Number of HS-PDSCH codes (SF=16)

• Maximum number of consecutive HS-PDSCH codes

• Number of HS-SCCHs and the codes

• Cell power

• Relative code channel gains

• OCNS configurations

• HSDPA Gains (HS-PDSCH and HS-SCCH)

• UL HS-DPCCH Gain Deltas (ACK, NACK, CQI)


NOTE: Some parameters displayed in the cell configuration dialog box can not be edited. These parameters are configurable via other network entities such as the parent Node-B or RNC. These are often parameters shared between network elements or between two cells. These types of parameters are configurable either at the Node-B level or the RNC level. Access the dialog boxes for cell configuration by double-clicking on a Cell icon, or selecting from the floating menu available by right clicking on the Cell icon. You can also access the dialog box by selecting Network>Configure Network Element>Cell…. This dialog box shows three types of cell configuration parameters. The following sections discuss these parameters in further detail. To the right of Cell icons in the Network Configuration window are a series of indicators and controls.

Figure 15 - Cell View after UE Registered on Node-B The color of the small box (marker) attached to the Cell icon indicates the current status of the Cell. White Cell is transmitting common channels when call processing enabled.

Bold Cell where UE is registered.

Green Cell is active in a call.


The Primary Scrambling Code and the Cell Power Level (in dBm) of the cells display to the right of each cell icon. Control Cell power by using the left and right arrows shown next to the gain value. This is equivalent to changing the cell power via the Configure Cell… dialog box.

4.3.1.1. WCDMA Cells – Configure Physical Parameters The Configure Physical Parameters dialog allows you to configure cell physical and RF parameters, channel gains and channelisation codes. Access this dialog box by clicking the Configure Physical Parameters… button or by selecting Network > ConfigureNetworkElements > Cell > Configure Physical Parameters. The first tab, Cell Configuration allows you to configure the RF parameters and other physical layer parameters shown in Figure 15.

Figure 16 - Configure Physical Parameters Window – Cell Configuration NOTE: Some parameters displayed in the cell configuration dialog box can not be edited while call processing is enabled. To stop call processing, select Call > Stop Call Processing. The Channel Gains tab allows you to configure the channel gains for the individual channel types for a given cell.


Figure 17 - Configure Physical Parameters Window – Channel Gains DeltaAck DeltaNack and DeltaCQI These parameters configure the relative gain applied to the HS-DPCCH after spreading. Adjusting the power of the HS-DPCCH transmission affects the ability of the cell to decode the channel. For detailed information, refer to 3GPP Specification 25.213 Section 4.2.1.2. HS-SCCH Configuration The HS-SCCH configuration allows up to four simultaneously active HS-SCCHs which signals the downlink HSDPA scheduling information. Each channel has an independently configurable scrambling code number. The spreading factor is fixed at 128. HS-PDSCH Configuration The HS-PDSCH is configurable with up to five consecutive codes of spreading factor sixteen. The number of available codes places a physical limit on the downlink data rate. Note that the consecutive codes cannot wraparound from 15 to 0.


The Channelisation Codes tab allows you to configure HS and R99 channelisation codes used for the cell. This dialog maps certain channelisation codes to particular spreading factors (SFs). For dedicated channels, the system uses the channelisation code associated with the SF required by the Dedicated Physical Channel (DPCH). Use the graphic at the lower section of this dialog to help identify channelisation code conflicts.

Figure 18 - Configure Physical Parameters Window – Channelisation Codes


4.3.1.2. WCDMA Cells – Configure SIB The Configure SIB… button displays the dialog used to configure the SIBs.

Figure 19 - Configure Physical Parameters Window – SIB Use the Enable SIBs box in the top right corner to select which SIBs to transmit. To transmit specific SIBs, click in the corresponding SIB box. The Edit SIB lower half of the dialog allows the configuration of SIB contents. Use the SIB Select drop-down box to select the SIB to edit. The grid shows each field of the SIB, its value, and a description of the value (if applicable). NOTE: You cannot edit field names marked with an asterisk (*). Some fields are tied to parameters used by the state machine and can only be edited through other cell configuration dialogs, the Node-B configuration pages, the RNC configuration pages, or the CN configuration pages. After you have edited the SIBs, click the OK button. The cell begins transmitting these messages in the periodic message train.


Figure 20 - Configure Common Channels

4.3.1.3. WCDMA Cells – Configuring Common Channels Use the Configure Common Channels… dialog to configure common channels. Each common channel can be either disabled or configured. The channel configurations are based on the reference configurations defined in [7]. Select the channel configuration to enable the default reference parameters. The TrCH Configuration… button can be used to customize or to review the configuration in finer detail. Examples of parameters that can be edited include Transport Channel IDs, Transmit Time Interval (TTI), coding type, Cyclic Redundancy Check (CRC), and Transport Format Combination (TFC) configurations for each Transport Channel (TrCH). AirAccess WCDMA-HS supports Paging Channel/ Forward Access Channel (PCH/FACH) common channels in two configurations:

1. PCH and FACH transport channels mapped to a Single Secondary Common Control Physical Channel (SCCPCH).

2. PCH and FACH transport channels mapped to two separate SCCPCHs. NOTE: You must configure all cells to have the same PCH/FACH common channel configuration. Future AirAccess WCDMA-HS releases will enforce this restriction at the user interface. Currently supported RABs include:

• Signalling Radio Bearer(SRB) 3.4kbps • CS 12.2 kbps • PS 64, 128 • 384 kbps.


4.3.1.4. WCDMA Cells – Copy/Paste Once a cell is configured, that cell configuration can be copied to any other cell(s). Cell parameters that you can copy using this method include:

• Common channel gain

• Common channel channelisation codes

• SIB configuration and message content

• Node B downlink and uplink frequencies

Cell parameters that you cannot copy using this feature include:

• Primary scrambling code

• Cell identity

• Location area/Routing Area Identity

4.3.2. WCDMA Node-Bs The Node-B icon(s) in the Test Configuration window provides access to the following settings:

• Region frequency and channel numbers.

• Location area code

• Routing area code You can configure each Node-B independently. Access the Configure Node-B… dialog box by double-clicking on a Node-B icon, by right clicking on the Node-B icon, or by selecting Network > Configure Network Element > Node-B… from the menu bar .

Figure 21 - WCDMA Node-B Configuration Dialog


4.3.3. Radio Network Controller (RNC) The RNC icon in the Test Configuration window provides access to the following configurations:

• RAB and SRB combinations for dedicated channels.

• Radio Link Control (RLC) parameters for dedicated channels.

• Packet Data Convergence Protocol (PDCP) parameters. Access the Configure RNC dialog box by double-clicking on a RNC icon, right clicking on the RNC icon, or by selecting Network > Configure Network Element > RNC… from the menu bar.

4.3.3.1. RNC – Configuring Dedicated Channels You can configure AirAccess WCDMA-HS to operate in test mode when setting up calls. The test mode uses a Reference Measurement Channel (RMC) to send data to the UE, which loops the data back to AirAccess WCDMA-HS. When test mode is disabled, the AirAccess WCDMA-HS supports normal voice and data calls.

Figure 22 - RNC Configuration Dialog

4.3.3.2. Functional (Non-RMC) Mode The Configure Dedicated Channels… button brings up a dialog that allows configuration of dedicated channels. The first tab, Reference RABs/SRBs Configurations allows the configuration of the supported radio access bearers (RABs) and service radio bearers (SRBs). The RAB and SRB configurations in this dialog are based on the reference RAB definitions defined in [7]. The TrCh Detail… can be used to customize or to review the configuration in finer detail. Examples of parameters that can be viewed or edited include Transport Channel IDs, TTI, Coding Type, CRC, and TFC Configurations for each TrCH.


Figure 23 - RNC Configure Dedicated Channels Dialog – RAB/SRB Configurations

The second tab, Reference RAB Combinations allows you to configure combinations of SRBs and RABs based on reference configurations in Section 6.10.2.2 of [7]. The AirAccess WCDMA-HS state machine selects the first combination in this table that meets the service requirements requested by the UE. Use the TFCS & L1 Detail… button to customize or to review the default TFCS and physical channel parameters.

Figure 24 -RNC Configure Dedicated Channels Dialog – RAB Combinations NOTE: Some parameters displayed in the cell configuration dialog box can not be edited while call processing is enabled. To stop call processing, select Call > Stop Call Processing.


4.3.3.3. RMC/FRC Mode In RMC/FRC mode, the AirAccess WCDMA-HS supports RMC/FRC calls as required for conformance test cases. Select RMC/FRC mode by clicking the RMC/FRC button on the application main toolbar. The state of RMC/FRC mode affects which parameters display when configuring dedicated channels.

Figure 25 – RMC/FRC Mode Selection on the AirAccess WCDMA-HS Toolbar NOTE: You cannot turn RMC mode on or off while call processing is enabled. To stop call processing, select Call>Stop Call Processing. When RMC mode is enabled, click the Configure Dedicated Channels… button to bring up a dialog that allows you to configure dedicated channels for RMC operation. The first tab, Reference RABs/SRBs Configurations, allows you to:

• Configure the supported RABs. • Configure the supported SRBs. • Select the RMC mode. • Configure associated UL and DL data rates.

Figure 26 -RNC Configure Dedicated Channels Dialog – RAB/SRB Configurations – RMC/FRC Enabled


The Reference RAB Combinations tab allows you to configure the combinations of SRBs and RABs for RMC mode. The state machine selects the first combination in this table that meets the service requirements requested by the UE.

Figure 27 -RNC Configure Dedicated Channels Dialog – RAB Combinations – RMC Enabled NOTE: When RMC.FRC mode is enabled, the Initiate UE-Terminated Call and Initiate UE-Terminated PS Call functions cause the AirAccess to page the UE and initiate a RMC call using the current configurations of RAB/SRB configurations and combinations.


4.3.3.4 HS- Configure MAC-hs

Figure 28 - Configure MAC-hs Dialog

MAC-hs Scheduler The MAC-hs Scheduler chooses an algorithm to determine the number of HARQ processes and which slots are assigned to a given UE. Currently, only manual selection of the number of HARQ processes and the Inter-TTI are supported. Maximum efficiency is achieved when the number of HARQ processes is equal to 6 / (Inter-TTI) with this calculation always rounded up. No HARQ processes may be used more than once per six TTI’s. For detailed information on MAC-hs scheduling and HARQ processes, refer to 3GPP 25.321 Section 11.6. Transport Block Selection Method The manner in which the transport block size is chosen may be configured to three modes.

1. Normal Selection – This is based on the size of the downlink data transmitted and the CQI reported by the UE. The MAC-hs Scheduler schedules a block size and configures a modulation scheme that sends downlink data in the most radio-resource-efficient manner. This choice is constrained by the channel quality reported by the UE.


2. Based on a fixed CQI – The scheduling happens in the most radio-resource-efficient manner based on the amount of data to be transmitted and the CQI, as in normal scheduling. However, you may fix a CQI to be used in this calculation which overrides the CQIs reported by the UE.

3. Fixed Transport Block Size – This option allows you to fix a transport block size corresponding to one MAC-hs PDU. Additionally, you may select the MAC-d PDU size that is used to construct the MAC-hs PDU.

Usage Warning: This configuration should only be used by expert users because it is possible to schedule a higher data rate than the physical layer is configured to support. It is also possible to configure the manner in which the HARQ processes on the UE configure their soft memory. Implicit configuration causes the UE to divide its soft memory equally among the HARQ processes. Explicit configuration sets a size for the HARQ memory buffers. Usage Warning: Valid memory buffer sizes used in explicit signaling are UE dependent and should be chosen with great care. Redundancy Versions The MAC-hs Scheduler allows selection of up to four redundancy versions. In this release, AirAccess is limited to the number of HARQ retransmissions. When the UE HARQ process NACKs a packet, the information is retransmitted up to (HARQ_retransmissions -1) times in an attempt to get an ACK before the packet is discarded and left for to RLC retransmission. Each retransmission by the HARQ process uses a unique redundancy version number which indicates a modulation scheme used by the physical layer. For detailed information on redundancy versions, refer to 3GPP Specification 25.212, Section 4.6.2. Repetition Factors It is sometimes preferable that the UE retransmits acknowledgements and CQI reports to the MAC-hs, particularly in harsh radio conditions. The ACK/NACK and CQI repetition factors cause this information to be retransmitted according to scheduling defined in 3GPP Specification 25.214, Sections 6A1.1 and 6A.1.2. The CQI Feedback cycle is the frequency with which the channel quality is measured by the UE. Usage Warning: If the CQI feedback cycle is less than the time required for CQI repetitions, then the UE may generate a Radio Bearer Setup failure with reason Invalid Configuration. Furthermore, setting the ACK/NACK repetition factor to be greater than the Inter-TTI may cause a serious degradation in the achieved data rate.

4.3.3.5. RNC – Configure RLC (Dedicated Channels) The Configure RLC… button brings up the dialog used for configuration of RLC parameters in Acknowledged Mode (AM), Unacknowledged Mode (UM), and Transparent Mode (TM). The default parameters are provided for each RAB type.


Figure 29 -RNC Configuration – Configure RLC NOTE: Use the SRB RLC parameters for signaling radio bearers for both the DCH and common channels (RACH and FACH) in RNC Configuration. The Configure PS RAB dialog allows for the configuration of RLC parameters for dedicated channel RABs. For a detailed definition of each parameter, refer to [10].

Figure 30 - RNC Configuration – Configure RLC – RAB AM Parameters


4.3.4. Core Network (CN) The CN icon in the Test Configuration window provides access to:

• Enabling/disabling NAS procedures.

• Selection of CN domain supported (CS and/or PS).

• Configuration of CN parameters such as MCC and MNC.

• Configuration of Authentication Parameters.

• Configuration of Security Mode Parameters.

• Configuration of IP address assigned to UE in PS mode.

• Timers for periodic location area and routing area update. Access the Configure CN dialog box by double-clicking on a CN icon, or selecting from the floating menu available by right clicking on the CN icon. You can also select Network>Configure Network Element>CN.


Figure 31 - CN Configuration

4.3.5. Multiple PLMN Selection The PLMN Configuration window allows emulation of MCC and MNC for multiple PLMNs. You must disable Call Processing while changing the MNC or MCC values. The number of PLMN IDs that you can modify is dependent on the number of TRXs enabled in the test configuration.


Figure 32 - Multiple PLMN Emulation

4.3.6 User Equipment (UE) The UE Information dialog box provides detailed information provided by the UE. Access the UE Information dialog box by double-clicking on the UE icon, or by selecting from the floating menu made available by right clicking on the UE icon.

Figure 33 -UE Information Window

Before beginning testing with AirAccess WCDMA-HS, the UE must identify itself to the network. After successfully decoding the broadcast information transmitted by the AirAccess WCDMA-HS, the UE attempts to perform a location area update (CS domain) and/or a UE attach (PS domain). After the UE registers with the AirAccess WCDMA-HS, the identification values the UE reports display in the dialog box. These identification values are listed below.


• IMEI • TMSI

• IMEISV • P-TMSI

• IMSI • Mobile Network Code (MNC)

• Power Class • Mobile Country Code (MCC) When replacing the UE under test, click the Clear Registration Info button in the UE Information dialog box to clear existing UE identification information. The Clear Registration Info action is also available from the floating menu shown when you right click on the UE icon. Otherwise, when the next UE registers with the AirAccess WCDMA-HS, the UE information updates. The IMSI field is editable. If the UE does not register properly, you may need to manually enter the IMSI so that the AirAccess WCDMA-HS can page the UE.

4.4. Message Analyser and Test Events The AirAccess WCDMA-HS Message Analyser and Test Events windows provide a real-time indication of testing progress.

4.4.1. Message Analyser The Message Analyser displays over-the-air messages transmitted from AirAccess WCDMA-HS on the downlink, or received from the UE on the uplink. To minimize the number of messages stored in the log file, BCCH (overhead) messages are only logged in the Message Analyser whenever a message parameter changes. Enable or disable the display of the Message Analyser by selecting via View > Message Analyser. For each message, AirAccess WCDMA-HS logs the following detail:

• Timestamp

• Message direction

• RNC number and Cell Identity

• Network entity generating the message or the logical/transport channel and RLC mode used to transmit/receive the message

• Description of message Color-coding aids in identifying the code channel for a particular message. Black Broadcast (BCCH) messages


Green Uplink (UE- > UTRAN) RRC messages

Purple Downlink (UTRAN- > UE) RRC messages

Dark Blue Uplink NAS (peer-to-peer) entity messages

Light Blue Downlink NAS (peer-to-peer) entity messages

Grey NAS state transitions Double-click any message to display the parsed detail of the selected message using the standard ASN.1 decoded format. Right clicking the message log screen toggles between Grid Mode and Text Mode. Use Text Mode to cut, copy, or paste message contents.

Figure 34 -Example of Message Analyser Window


4.4.2 Test Events The Test Events window displays an interpretive high-level view of messaging logged in the Message Analyser. This includes information such as test progress, analysis of pass/fail criteria, system state change events, and error reporting. Enable or disable the display of the Test Event by selecting View > Test Events. Color-coding indicates a pass (green) or fail (red) condition. A plus (+) indication in the far left margin on a Test Events line indicates that more information is available and can be accessed by double-clicking on the line of text. Correlate the data logged in the Test Events window to the messaging in the Message Analyser by matching time stamps.

Figure 35 -Example of Test Events Window

4.4.3. Clearing, Saving and Recalling Message Analyser and Test Events Logs AirAccess WCDMA-HS stores Message Analyser and Test Events logs in a single database. You can save the contents of the current log windows to recall them at a future date. To clear Message Analyser and Test Events logs:

Select File>Clear Test/Message Logs. CAUTION: Clear the logs only after saving any important data. Once the logs are cleared, data cannot be restored.

•


To save Message Analyser and Test Events logs:

Select File>Save Test/Message Logs as…. This launches a Windows dialog box where you can select a directory and filename to store the database. If you do not enter a filename, the data saves to the last used filename.

•

•

To recall Message Analyser and Test Events logs:

Select File>Open Test/Message Logs as…. This launches a Windows dialog box where you can browse for the desired database. Once selected, the database contents display in the Message Analyser and Test Events windows.

4.4.4. Message Filtering Filter the messages displayed in the Message Analyser window by selecting View > Filter Messages…, or click the Filter Messages… button at the top of the Message Analyser window.

Figure 36 -Message Filtering Configuration

The Peer Msg. NAS button allows you to filter NAS entity messages (CC, MM, GMM, or SM). The Peer Msgs. RRC button filters RRC messages (BCCH, CCCH, or DCCH). The State Events button filters state events (CN or RRC), and the Message Type button filters messages in the Uplink or Downlink direction. NOTE: SAP Message filtering is not yet supported within the AirAccess WCDMA-HS.

4.5. Options To view the Options dialog, select Tools > Options.


Figure 37 -Options Window Message Auto Selection highlights test events records based on the selection of a message analyser record, or vice versa. The correlation of the records is based on the timestamp. Message Analyser Detail allows you to toggle between Grid Mode and Text Mode. Text Mode allows you to cut, copy, and paste detailed message contents. Test Configuration Detail sets the resolution (in dB) of the step size used to adjust cell power when using the arrow keys on the keyboard in the Test Configuration window.

5.0. TEST PROCEDURES This section of the manual provides an overview of many of the AirAccess testing capabilities. You can use these testing procedures to test complex scenarios that may be encountered by the UE in a live network.

5.1. Mobility Management (Circuit Switched) Procedures Mobility Management in Circuit Switched mode of operation consists of the following procedures:

• IMSI Attach

• IMSI Detach

• Location Area Update

• Location Area update with TMSI allocation and / or identity enabled.

• Periodic Location Area Update.

5.1.1. IMSI Attach The IMSI Attach process is initiated by a UE whenever it is powered on in the Circuit-Switched (CS) mode of operation. To test the IMSI Attach procedure:

1. Launch the AirAccess WCDMA-HS software and connect to the instrument by selecting Instrument > Connect.

2. Start call processing by selecting Call > Start Call Processing.

3. Power on the UE. Ensure that the AirAccess WCDMA-HS is connected to the UE by visually verifying that the UE registers on the network. Verify this by viewing the power bars displayed on the UE interface.

4. Upon reading the BCCH information transmitted by the AirAccess WCDMA-HS, the UE should automatically perform a Location Area Update with the cause set to IMSI Attach.

The Location Update Request and Accept messages of the IMSI attach are NAS peer-to-peer messages shown in blue in the Message Analyser window.


5.1.2. IMSI Detach The UE initiates the IMSI Detach process when the UE is powered-off in the Circuit-Switched mode of operation. To test the IMSI Detach process:

1. Check to see if the UE is attached to the AirAccess WCDMA-HS (refer to Section 5.1.1 IMSI Attach on page 47).

2. Power off the UE. The UE should automatically perform an IMSI Detach.

3. Check the Message Log window by selecting View > Message Logs to check for an IMSI Detach.

5.1.3. Location Area Update with TMSI Allocation and/or Identity Enabled The AirAccess WCDMA-HS can be configured to allocate a TMSI to the UE during the location update procedure. You can also enable Identity procedures. To configure the AirAccess WCDMA-HS for TMSI Allocation and Identity-enabled procedures during a Location Update:

1. Display the Configure CN… dialog box by right clicking on the CN icon in the Test Configuration window.

2. To enable TMSI allocation, select the Enabled selection from the TMSI list.

3. To enable the various forms of identity request, click the Identity Procedure Enabled checkbox, and select the identity type(s).

To test the Location Area Update Procedure with TMSI allocation and Identity request enabled:


2. Configure the AirAccess WCDMA-HS for TMSI Allocation and Identity enabled procedures.

3. Start call processing by selecting Start > Call Processing.

4. Power on the UE while connected to SR3420 in Circuit-Switched mode of operation.

5. The UE performs a Location Area update.

6. The AirAccess WCDMA-HS sends identity request (if enabled) to the UE and also allocates a TMSI to the UE (if enabled).

Test Procedures 49

5.1.4. Periodic Location Area Update Use Periodic Location Area Updating to notify the core network of the availability of a registered UE in CS mode. The core network controls the timing of the update. To configure the AirAccess WCDMA-HS software for the period which the UE should perform the notification:

1. Select the Configure CN… dialog box by right clicking on the CN icon in the Test Configuration window.

2. Use the mouse to select the Location Area Update field.

3. Enter the value of the period at which the UE should register with the core network. To test periodic location area update:


2. Enable call processing by selecting Start > Call Processing.

3. While the UE is connected to AirAccess WCDMA-HS (SR3420), power up the UE in Circuit Switched mode of operation.

4. UE should perform a Location Update (IMSI Attach) and register with the Network.

5. UE periodically sends location area updates as configured in AirAccess WCDMA-HS.

5.2. GPRS Mobility Management (Packet Switched/GMM) Procedures GPRS Mobility Management in packet switched mode of operation consists of the following procedures:

• Packet Switched (PS) Attach

• PS Detach

• Routing Area Update

• PS Attach with Packet-TMSI (P-TMSI) enabled and/or Identity enabled.

• Periodic Routing Area update


5.2.1. PS Attach The UE initiates an attach procedure to register to the Core Network (SGSN / GGSN) when the UE is powered on in packet switched mode of operation. To test the PS attach procedure:

1. Launch the AirAccess WCDMA-HS application and connect to the instrument by selecting Instrument > Connect.

2. Enable Call Processing by selecting Start > Call Processing.

3. Power on the UE (configured for packet switched mode of operation) while it is connected to the SR3420.

4. The UE performs a PS attach procedure after successful decode of the broadcast information and register with the network (SGSN).

5. The message analyser log displays when the UE performed a PS attach procedure.

5.2.2. PS Detach The UE initiates the PS detach procedure to de-register from the Core Network when the UE is powered off while in packet switched mode of operation. To test the PS detach procedure:

1. Follow the steps outlined in Section 5.2.1, PS Attach on page 50 to perform a PS Attach procedure.

2. Power off the UE after it has PS attached to the AirAccess WCDMA-HS.

3. The UE performs a detach procedure and de-registers from the network (SGSN).

4. The message analyser log shows when the UE performed a PS detach procedure with AirAccess WCDMA-HS.

5.2.3. Periodic Routing Area Update Use Periodic Routing Area Updating to periodically notify the availability of the UE to the core network when the UE registers with the core network in PS mode. The core network controls the frequency of the update.

Test Procedures 51

To configure the AirAccess WCDMA-HS software for the period which the UE should perform the notification:

1. Select the Configure CN… dialog box by right clicking on the CN icon in the Test Configuration window.

2. Configure the Periodic Routing Update Timer value in Configure CN… dialog box to the rate at which the UE should periodically register with the core network.

To test periodic routing area update:



3. While the UE is connected to AirAccess WCDMA-HS (SR3420), power on the UE in the Packet Switched mode of operation.

4. The UE performs Routing Area Update (PS Attach) and register with the Network.

5. The UE periodically sends Routing area updates as configured in AirAccess WCDMA-HS.

5.3. PS Calls at Different Data Rates Packet switched calls can be initiated from the UE if the UE is registered to the PS network. The table below shows the current data rate capability of AirAccess WCDMA-HS. AirAccess WCDMA-HS can support different data rates on the uplink and the downlink.

Supported Packet Domain Data Rates Direction Data Rates Uplink (kbps) 64, 128, 384 Downlink (kbps) 64, 128, 384

NOTE: The packet data rates supported by the AirAccess WCDMA-HS software for the session need to be configured prior to the start of call processing. Once call processing is enabled, the data rates supported cannot be modified (until call processing is disabled again). To configure and test the 64kbps (Uplink and Downlink) Data rate for a PS Call:

1. Launch AirAccess WCDMA-HS and connect to the instrument by selecting Instrument >Connect.

2. Right click on the RNC icon of AirAccess WCDMA-HS software and select Configure Dedicated Channels…. Or select Network > Configure Network Elements > RNC > Configure Dedicated Channels from the menu.


3. The Reference RABs/SRBs Configurations tab displays by default. Select the data rates for the default PS RAB configuration in the columns labelled DL Max bit rate and UL Max bit rate, for the downlink and update data rates respectively.

4. Using the pull down shown below, select the 64kbps data rate for both uplink and downlink.

Figure 38 - Configuring a 64kbps PS Data Call

5. To examine and configure the details of transport channels for the chosen configuration, click on the button TrCH Details and make appropriate changes.

6. Click OK after the 64kbps data rates have been chosen

7. Enable Call Processing by selecting Start > Call Processing.

8. Power on the UE while it is connected to the SR3420.

9. The UE performs the Attach procedure and registers with the AirAccess WCDMA

10. Initiate a packet domain call from the UE. This is at the data rates specified earlier.

11. The message log displays the establishment of a 64kbps packet domain call (Uplink and Downlink).

5.4. RAB Reconfiguration (Dynamic QoS Modification) of PS Calls Radio access bearers (RABs) can be reconfigured during an active packet switched call. For example, if the UE is on a PS call with 64kbps on the uplink, the network or the UE can request that the data rate be increased or decreased. To test RAB reconfiguration, multiple RABs assignments need to be configured in AirAccess WCDMA-HS before the call processing is enabled. This section describes the procedure to set up different PS data rates followed by the entire procedure to execute a RAB reconfiguration.

Test Procedures 53

NOTE: Packet Data Rates supported by the AirAccess WCDMA-HS software for the session need to be configured prior to the start of call processing. Once call processing is enabled, the data rates supported cannot be modified (until call processing is disabled again).

5.4.1. Setup Multiple Radio Access Bearers with Different Data Rates

1. To select the data rate for PS Call, open the dialog box, right click on the RNC icon of AirAccess WCDMA-HS software and select Configure Dedicated Channels…

2. In the dialog box shown in Figure 39, enable the checkbox for Entry #4 to add a new radio access bearer (RAB).

NOTE: The AirAccess WCDMA-HS state machine select the first entry corresponding to the requested service (signalling, CS, or PS) type. For example, if a PS call were to be setup, the RAB defined in Entry #3 would be selected. Entry #4, which is also for PS calls, will be used only for RAB reconfigurations. NOTE: Reconfigurations are currently only supported for non-HSDPA RABs.

Figure 39 - Configure Dedicated Channels (Add new RAB 64/128 kbps)

3. At this point, two PS domain data rates are configured: one at 64/64kbps and another at 64/128kbps. Because the 64/64kbps entry is a lower entry number, it is the default PS call data rate.


5.4.2. Procedure for RAB Reconfiguration The following is the complete procedure to execute a RAB Reconfiguration of PS Calls.


2. Configure the AirAccess WCDMA-HS for RAB configurations and RAB/SRB combinations as explained above.

3. Enable call processing by selecting Start > Call Processing. Power on the UE while connected to SR3420. The UE performs the PS Attach procedure.

4. Initiate a UE PS call.

5. Check that the UE is currently in a 64kbps/64kbps PS call (in the Current PS RAB Index (QoS) window.

6. To change the data rate dynamically, in the Target PS RAB Index combo-box, select the target RAB/SRB combination (for example, 64/128kbps).

7. The PS Call is now reconfigured with the new RAB at 64/128 kbps.

8. The message analyser log shows the RAB reconfiguration from 64/64 kbps to the new 64/128kbps. This is during the RAB reconfiguration message and response message sequence.

5.5. NAS State Machine Control You can configure the behavior of the AirAccess WCDMA-HS NAS state machine to behave in certain manners. The following sections discuss some of the NAS state machine parameters that are configurable.

5.5.1. Identity Procedures The network uses identity procedures to request the UE to provide specific identification parameters such as the International Mobile Subscriber Identity (IMSI), the International Mobile Equipment Identity (IMEI), or other parameters. AirAccess WCDMA-HS can be configured to query the mobile via the identity procedure for the following identification parameters:

• IMSI

• TMSI

• IMEI

• IMEIsv

Test Procedures 55

Identity procedures must be configured on AirAccess WCDMA-HS before the start of call processing. To configure identity procedures:

1. Open the Enable Identity Request Procedure dialog box, right click on the CN icon and select Configure CN….

2. Under the NAS Common Procedures, enable the checkbox for Identity Procedure Enabled.

3. Select the appropriate type(s) of identity (for example, IMSI) from the pull down menu next to the Identity Procedure Enabled checkbox.

To execute the Identity Request Procedure:


2. Configure the AirAccess WCDMA-HS for identity request procedure.

3. Enable Call processing by selecting Start > Call Processing.

4. Power on the UE while connected to SR3420 in circuit switched mode.

5. UE performs a location update (IMSI attach) with the identity request procedure.

6. The message analyser log shows the identity request procedure with the IMSI.

7. AirAccess WCDMA-HS sends the identity request message to the UE with the identity type set to IMSI. The UE responds with the identity response message, which contains the requested value of IMSI. Identity request procedures can also be similarly enabled for TMSI, IMEI, and IMEIsv.

5.5.2. Authentication Procedure The authentication procedure allows the network to:

• Check the identity provided by the UE

• Provide parameters to the UE to calculate the ciphering and integrity key It also allows the UE to authenticate the WCDMA network. NOTE: Authentication procedure needs to be configured prior to the start of call processing.


To configure AirAccess WCDMA-HS to support authentication:

1. To configure the AirAccess WCDMA-HS software for authentication during a Location Area Update or Routing Area update procedure, display the Configure CN… dialog box by right clicking on the CN icon.

2. Select the checkbox labeled Authentication Enabled to enable authentication. The parameters AMF, SQN, K, and RAND values can be modified to the desired values.

3. To disable the Authentication procedure, uncheck the Authentication Enabled check box. NOTE: Some of the AirAccess WCDMA-HS authentication parameters need to be consistent with the parameters that are stored on the UE’s USIM. To execute Authentication Procedure (for PS domain):


2. Enable Authentication as discussed in the Support Authentication configuration instructions above.


4. Power on the UE while connected to SR3420.

5. UE should perform PS Attach and Authentication procedures.

6. The message analyser logs shows the Authentication procedures during the location or routing are updated.

5.6. OCNS The Orthogonal Channel Noise Simulator (OCNS) is a mechanism used to simulate the users or control signals on the other orthogonal downlink channels. AirAccess WCDMA-HS provides support for an OCNS downlink channel. To enable or disable OCNS:

1. Right click on the cell icon and select Configure Physical Parameters….

2. In the dialog box that appears, select the type of OCNS desired.

3. R99 Dynamic OCNS is used for R99 RF testing [1]. Do not use this type of OCNS if downlink power control is enabled. Downlink power control could cause the OCNS level to be disproportionately higher.

4. HSDPA Dynamic OCNS is used for HSDPA RF testing [1].

Test Procedures 57

NOTE: OCNS is used to consume the remaining code domain power so all of the code channels add up to 0dB. If OCNS is not enabled, the channel power level measured at the SR3420 I/O connector may be less than the cell level set at the AirAccess WCDMA. In this case, you must ensure that the all of the configured code channels add up to 0dB.

5.7. Reference Measurement Channels (Call Setup) Reference Measurement Channels have been defined in 3GPP and are used for performing Physical layer tests. These tests are specified in Specification 34.121. AirAccess WCDMA-HS software supports Reference Measurement Channels (also known as RMC Channels) for data rates 12.2, 64, 144 and 384 kbps on each Uplink and Downlink. To enable the RMC feature in AirAccess WCDMA-HS, toggle the RMC FRC button in the tool bar. There are two methods defined in specifications to setup the RMC call:

1. Activate RB Test Mode.

2. Closed Loop Test Mode (Mode 1 & Mode 2). AirAccess WCDMA-HS supports both methods and both modes. The default RMC configuration is for Closed Loop Test, Mode 1.


5.7.1. RMC Calls at Different Data Rates RMC calls can be initiated from the AirAccess WCDMA-HS software if the UE is registered to the network in either CS/PS/CS&PS modes. The table below shows the current RMC data rate capability of AirAccess WCDMA-HS. The AirAccess WCDMA-HS can also support asymmetric data rates on the Uplink and Downlink.

Supported RMC Data Rates Direction Data Rates (kbps) Uplink (kbps) 12.2, 64, 144, 384 Downlink (kbps) 12.2, 64, 144, 384

NOTE: The RMC data rates need to be configured prior to the start of call processing. Once call processing is enabled, the data rates cannot be modified (until call processing is disabled again). To configure 64 kbps (UL/DL) RMC Call:

1. Launch AirAccess WCDMA-HS and connect to the instrument by selecting Instrument > Connect.

2. Toggle the RMC FRC button on the tool bar of AirAccess WCDMA software.

3. Right click on the RNC icon and select Configure Dedicated Channels….

4. The Reference RABs/SRBs Configurations tab is displayed by default. The data rates for the default RMC RAB configuration can be seen in the columns labeled DL Max bit rate and UL Max bit rate for the downlink and uplink data rates respectively.

5. Using the pull down shown below, select the 64kbps data rate for both uplink and downlink.

6. To examine and configure the details of transport channels for the chosen configuration, click on the button TrCH Details and make appropriate changes.

7. Click OK after the 64kbps data rates have been chosen.

8. Enable Call Processing by selecting Start > Call Processing. The steps above can be used to reconfigure the RMC data rates for the corresponding CS or PS RAB.RMC data rates need to be configured before the start of call processing.

Test Procedures 59

Figure 40 - Configuring 64 kbps RMC Call To execute the RMC call for a Closed Loop Test, Mode 1:


2. Configure AirAccess WCDMA-HS for the desired RMC data rate, as discussed above.


4. Configure Uplink SDU size from the menu by selecting Network>Configure Call Processing>Configure RMC Test Mode>SDU size. The SDU size should be set to the uplink RLC PDU size, for the corresponding RMC data rate chosen.

5. Power on the UE, the UE should be connected to the SR3420.

6. The UE should perform location area update procedure.

7. Initiate a UE terminated call.

8. Once the call is active, a green cell indicates that the RMC call is active on the cell. To execute the RMC call for a Closed Loop Test, Mode 2:

1. Launch the AirAccess WCDMA-HS software and connect to the instrument by selecting Instrument > Connect).

2. Configure AirAccess WCDMA-HS for the desired RMC data rate as discussed above.

3. Choose Traffic Class RMC Mode 2 from the pull down menu.




6. The UE performs the Location Area Update procedure.


8. A green cell indicates that the RMC call is active on that cell. To execute the RMC call for Activate RB Test Mode:

1. Launch the AirAccess WCDMA-HS software and connect to the instrument by selecting Instrument > Connect).

2. Configure AirAccess WCDMA-HS for the desired RMC data rate as discussed in Section 5.7, Reference Measurement Channels on page 57.


4. Configure RMC Test mode from the menu by selecting Network>Configure Call Processing>Configure RMC Test Mode>RB Test. Select RB Test should be chosen, for Activating RB Test mode.

5. Power on the UE. The UE should be connected to the SR3420.

6. The UE performs a location area update procedure.


8. A green cell icon indicates the call is active on the cell.

5.8. BER/BLER Measurements AirAccess WCDMA-HS software can be used for calculating the BER (Bit Error Rates) and BLER (Block Error Rates) measurements during the active RMC call. You can trigger BER and BLER measurements only in the RMC Closed loop test mode. RMC Closed Loop Test modes are described in Section 5.7, Reference Measurement Channels on page 57.

The BER/BLER measurements dialog window during an active RMC Closed Loop call is shown in Figure 41 below.

Test Procedures 61

Figure 41 - BER/BLER Dialog

The following buttons are found in the dialog window:

• Start - initiates the BER/BLER measurements.

• Clear - clears the BER/BLER measurement results.

• Stop - stops measurements.

• Close - closes dialog window. To collect the BER/BLER measurements for RMC mode 1:


2. Configure AirAccess WCDMA-HS for the desired RMC data rate as discussed in Section 5.7.1, RMC Calls at Different Data Rates on page 58.


4. Configure Uplink SDU size from the menu by selecting Network > Configure Call Processing > Configure RMC Test Mode>SDU size. You should set the SDU size to the uplink RLC PDU size for the corresponding RMC data rate chosen.

5. Ensure that the UE is connected to the SR3420, then power on the UE.



8. A green light next to the cell indicates that the RMC call is active on that cell.


9. Open the BER/BLER statistics dialog window from the menu by selecting Test > BER > BLER Statistics. Click the Start button to collect the measurements.

To collect the BER/BLER measurements for RMC mode 2:


2. Configure AirAccess WCDMA-HS for the desired RMC data rate, as discussed in Section 4.3.3.3. on page 33.

3. Select Network > Configure Network Element > RNC > Configure Dedicated Channels and open the dialog window. Configure Traffic Class and choose RMC Mode 2 for CS and PS RAB from the pull-down menu.



6. UE performs a location area update procedure.


8. A green light next to the cell indicates that the RMC call is active on the cell.

9. Open the BER/BLER statistics dialog window from the menu by selecting Test > BER > BLER Statistics.

10. Click the Start button to collect the measurements. BER/BLER measurements display in the dialog window.

5.9. Fixed Reference Channels (Call Setup) The Fixed Reference Channels defined in 3GPP are used for performing Physical layer tests for HSDPA. These tests are specified in 3GPP TS 34.121 [1]. AirAccess WCDMA-HS software supports Fixed Reference Channels (also known as FRC Channels) for H-Sets 1-5 also defined in 3GPP TS 34.121. To enable the FRC feature in AirAccess WCDMA-HS, toggle the RMC FRC button in the tool bar.

Test Procedures 63

5.9.1. RMC Calls at Different Data Rates You can initiate FRC calls from the AirAccess WCDMA-HS software if a HSDPA capable UE is registered to the network in PS mode. The table below shows the mapping between FRC H-Sets and HSDPA UE Categories.

Supported FRC H-Sets UE Category H-Set Category 1 H-Set 1 (QPSK and 16-QAM) Category 2 H-Set 1 (QPSK and 16-QAM) Category 3 H-Set 2 (QPSK and 16-QAM) Category 4 H-Set 2 (QPSK and 16-QAM) Category 5 H-Set 3 (QPSK and 16-QAM) Category 6 H-Set 3 (QPSK and 16-QAM) Category 11 H-Set 4 (QPSK only) Category 12 H-Set 5 (QPSK only)

NOTE: The FRC H-Set needs to be configured prior to the start of call processing. Once call processing is enabled, the data rates cannot be modified (until call processing is disabled again). To configure a FRC Call:

1. Launch AirAccess WCDMA-HS and connect to the instrument by selecting Instrument > Connect.

2. Toggle the RMC FRC button on the tool bar of AirAccess WCDMA software.

3. Right click the RNC icon and select Configure Dedicated Channels….

4. Using the pull down shown in Figure 42, select the H-Set for the downlink. The uplink rate is fixed at 64kbps.

5. After you choose the rates, click OK.

6. Enable Call Processing by selecting Start > Call Processing).


Figure 42 -Configuring FRC Call

To execute the FRC call:


2. Configure AirAccess WCDMA-HS for the desired FRC data rate, as discussed above.





7. A green cell indicates that the FRC call is active on the cell.

5.10. Throughput and CQI Measurements You can use AirAccess WCDMA-HS software for calculating the throughput and channel quality indicator (CQI) measurements during the active FRC call. Throughput and CQI measurements can be triggered only in the FRC test mode as described in Section 5.9, Fixed Reference Channels on page 62.

Test Procedures 65

5.10.1. MAC-hs STATISTICS

5.10.1.1. Normal HSDPA Statistics MAC-hs Statistics provide information about the performance of an HSDPA UE. It tallies ACKs, NACKs, stat-DTXs, and CQI reports. In addition, the statistics provide you with a median CQI value. Note that this calculation does not currently include reports of CQI-zero. HSDPA FRC Statistics While in FRC mode, the MAC-hs statistics dialog also performs throughput calculations on the physical layer. The throughput is calculated as follows: ((ACKs received)*(Transport Block Size in kilobits))/ (Time interval) Two types of throughput calculations are performed. The Aggregate Throughput Calculation reports throughput over all statistics currently displayed in the window. The Moving Average Statistics reports peak and average throughput averaged over a given time interval. The Moving Average Statistics provide an estimate of current and peak performance. The time period over which these statistics are averaged is configurable in intervals of 100ms. Note: In order to not erroneously overstate throughput of moving average statistics, the initial values reported after reset are inaccurate until an entire reporting interval has passed.

Throughput and CQI measurements are collectively referred to as MAC-hs statistics. The MAC-hs statistics dialog window is shown in Figure 43.


Figure 43 -MAC-hs Statistics Dialog

The following buttons are found in the MAC-hs Statistics dialog window:

• Start - initiates the throughput and CQI measurements.

• Reset - clears the throughput and CQI measurement results.

• Stop - stops measurements.

• Close - closes dialog window. To collect throughput and CQI measurements for FRC:


2. Configure AirAccess WCDMA-HS for the desired FRC H-Set as discussed in Section 5.9, Fixed Reference Channels on page 62.





7. A green cell indicates that the FRC call is active on that cell.

Test Procedures 67

8. Open the MAC-hs Statistics dialog window from the menu by selecting Test > MAC-hs Statistics. Click the Start button to collect the measurements.

To collect the BER/BLER measurements for RMC mode 2:


2. Configure AirAccess WCDMA-HS for the desired RMC data rate, as discussed in Section 4.3.3.3. RMC/FRC Mode on page 33.

3. Select Network > Configure Network Element > RNC > Configure Dedicated Channels to open the dialog window. Configure Traffic Class and choose RMC Mode 2 for the CS and PS RAB from the pull down menu.



6. UE performs a location area update procedure.


8. A green light next to the cell indicates that the RMC call is active on the cell.

9. Open the BER/BLER statistics dialog window from the menu by selecting Test > BER > LER Statistics.

10. Click the Start button to collect the measurements. BER/BLER measurements display in the dialog window.

APPENDIX – SR3420 PANEL DESCRIPTIONS AND EXTERNAL INTERFACES

A.1. Front Panel Description

Figure 44 - SR3420 Front Panel

Connector Connector

Type Purpose

Main Input Output N(F) Bi-directional Connection to UE for testing

Downlink Breakout 1 Output SMA(F) An output port to provide the channel 1 DL signal prior to the summation and diplex functions.

Downlink Breakout 1 Input SMA(F) An input port to provide the channel 1 DL signal to the summer and diplexer.

Downlink Breakout 2 Output SMA(F) An output port to provide the channel 2 DL signal prior to the summation and diplex functions.

Downlink Breakout 2 Input SMA(F) An input port to provide the channel 2 DL signal to the summer and diplexer.


Front Panel Controls

POWER Switch The Power switch is located in the bottom right hand corner of the front panel.

EMULATOR LED The Emulator LED is located to the left of the power switch. A green indicator means that the SR3420 is powered on and has booted successfully.

CONTROLLER LED The Controller LED is located to the left of the Emulator LED and indicates that the controller PC has successfully connected to the SR3420.

Front Panel Signal Input/Output Connectors

RF IN/OUT [DUPLEX] N-Type Connector (50 Ω) - This connector functions as the channel RF input.

DOWNLINK BREAKOUT [RF 1] SMA-Type Connector (50 Ω) - This connector functions as the downlink (transmit) RF channel for RF 1.

DOWNLINK BREAKOUT [RF 2] SMA-Type Connector (50 Ω) - This connector functions as the downlink (transmit) RF channel for RF 2.

CAUTION: The RF IN/OUT Duplex Ports can accept a limited power range. Refer to the technical specifications to ensure the power range does not exceed absolute maximum levels.

Appendix 71

A.2. Rear Panel Description

Figure 45 -SR3420 Rear Panel

Rear Panel Controls

AC Power Receptacle The AC universal power receptacle is located on the top left corner of the rear panel.

ETHERNET RJ-45 Type Connector - The Ethernet port (labelled Ethernet 3) supports TCP/IP. It is recommended that a Category 5 Ethernet cable be used.


A.3. SR3420 Operating and Environment Characteristics Operating Bands The SR3420 operates in the following bands:

Operating Band

UL Frequencies UE transmit, Node B

receive

DL frequencies UE receive, Node B

transmit I 1920 – 1980 MHz 2110 –2170 MHz II 1850 –1910 MHz 1930 –1990 MHz V 824 - 849MHz 869-894MHz

Input/Output Characteristics

System Frequency Accuracy ±1 ppm.

Output level range -19 to -110 dBm Output resolution 0.1 dB Output level accuracy ± 1 dB Duplex port VSWR 1.5:1 or better RF Breakout VSWR (output and input) 2.0:1 or better Input range supported -60 to +30 dBm. or greater Input damage level +33 dBm rms. or greater In-band spurious emissions -40 dBc maximum Out of band spurious emissions -10 dBc maximum (in the range of 400-2700

MHz) Harmonics of the desired signal -20 dBc. or better

Environmental Characteristics

Power Requirements

Voltage 85-250 VAC (auto sensing) Frequency 47-63 Hz Power 700 Watt (maximum) Fuse Type 15 Amp, 250 Volt slow-blow fuse Number of Fuses 2 Fuse Location Conductor Hot conductor, Neutral

Appendix 73

Operating Environment Temperature 0 to 40 degrees C Humidity 10% to 90%, noncondensing

Dimensions and Weight

Height 8.75 inches Width 16.88 inches Depth 21 inches Weight 65 pounds

10 MHz Reference Requirements

External 10 MHz Reference Input Connector Type 50 BNC connector (rear) Input Level Range 0 dBm +/- 2 dB Input Level PPM from 10 MHz < 2 PPM Internal 10 MHz Reference Connector Type 50 BNC connector (rear) Output Level Range 0 dBm Type OCXO Accuracy < 1 PPM

AirAccess WCDMA-HS UE Performance Tester Operations Manual

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