PXT E6621A LTE Wireless Communications Test Set

Technical Overview

Introduction

The Keysight Technologies, Inc. PXT E6621A LTE wireless communications test set represents a significant breakthrough in LTE UE testing. It incorporates flexible base station/network emulation and RF parametric tests into one integrated unit and extends Keysight’s unmatched portfolio of LTE test solutions for development and verification.

The PXT includes a suite of LTE RF measurements that may be used for characterization, calibration, and verification purposes.

With realistic base station/network emulation, the PXT LTE test set offers a controlled environment which can be used to provide network signaling to verify UE functional performance such as throughput.

The PXT provides maximum flexibility to configure a range of connection and network parameters. This enables test, stress, and debug of the protocol and data handling capabilities of designs including circuit switched fall back (CSFB), simultaneous voice and LTE (SVLTE), and single radio voice call continuity (SRVCC).

Optional software applications are available to enable more detailed protocol and application testing and analysis.

With the PXT, Keysight helps you get designs to market faster and more efficiently, and continues to provide you with comprehensive tools for all stages of the product lifecycle.

Signaling Test Items

– Support for multiple 3GPP LTE dated specifications, optional FDD and TDD

– Settable frequency, power, modulation schemes, bandwidth, and grant/allocation – Attach, connection, reconfiguration, authentication, NAS and RRC security

– High data throughput using internal test mode or end-to-end IP data—up to 102 Mbps DL, 51 Mbps UL, and Cat 3FDD

– Transmission modes 1-4 and 6, SISO, Tx diversity, open-loop MIMO, and closed-loop MIMO operation

– UE reporting for ACK/NACK’s lost packets, UCI and measurement reporting, as well as CQI, PMI, and RI for FDD – LTE-to-LTE handovers

– 2G GSM/(E)GPRS, 3G W-CDMA/HSPA, cdma2000®/1xEV-DO/eHRPD, and TDSCDMA interRAT handovers when connected to the Agilent 8960 Series 10 wireless communications test set

– LTE real-time protocol logging and analysis

– Highly configurable detailed signaling control with LTE message editor application

UE Receiver (DL) Test

– Measurements based on 3GPP 36.521 requirements

– Measurements in UE test mode, end-to-end data test, or with UE set to receive only

– High data throughput using internal test mode or end-to-end IP data–up to 102 Mbps, DL, 51 Mbps UL, and Cat 3 FDD

– Settable frequency, power, modulation schemes, bandwidth, and grant/allocation

– Display of UE reports (CQI, PMI, RI, UCI and power headroom, buffer reporting)

– 2x2 downlink MIMO channel with wide-band and sub-band CQI per code – Built-in traffic generation for UE downlink test – ACK/NACK/lost packet reports

– DL error rate percentage (text and graphical)

– DL instantaneous throughput (text and graphical)

– OCNG and AWGN impairments

UE Transmitter (UL) Test

– Measurements based on 3GPP 36.521 requirements

– Measurements in test mode, end-to-end data test, or with UE set to transmit only

– Settable frequency, power, modulation schemes, bandwidth, and grant/allocation

– Channel power, power spectrum, power versus time, and flatness

– Occupied bandwidth

– Spectrum emission mask

– Adjacent channel power

– Constellation, EVM

– Frequency and timing error

– Received I/Q data

– UL throughput

– Supports 89600 VSA software for additional in-depth RF analysis

LTE Message Editor

LTE message editor is a highly flexible tool for configuring Layer 3 messages (RRC and NAS). It provides detailed parameter control offering far more flexibility than a normal one-box tester.

– Create and modify scenario files for download into the PXT

– Complete control over all settings including system, network, and base station information

– Send erroneous messages to test UE responses

– Easy to use, with intuitive tree menu structure for message management

– Share scenarios during collaborative test development and for faster troubleshooting