Remote Radio Head Test, Reference Solution

BROCHURE

Simplify your test bench and significantly drive down your total cost of test. Keysight’s remote radio head test, reference solution provides pre-defined measurements plus connectivity to remote radio head physical interfaces you can quickly and easily characterize downlink and uplink performance – with minimal test development. Remote Radio Head Test Challenges Solution Highlights Cellular base stations architectures continue to evolve towards employing remote radio Accelerate time to volume heads (RRH) connected to the baseband unit via a Common Public Radio Interface with reduced cost of test for (CPRI) optical link. This architecture offers advantages in terms of optimizing base remote radio head functional and station hardware placement while minimizing RF cable losses. The test challenge lies performance measurements: in characterizing performance between the “front-haul” digital-baseband and the RF –– Functional test of downlink physical interfaces, on both the downlink and uplink. The front-haul physical interface CPRI to RF and uplink RF to traditionally relies on the development of custom hardware, requiring additional design CPRI, with integrated optical and support resources. and radio frequency interfaces –– Comprehensive performance test with vector signal analysis and vector signal generation for verification of DL RF performance vs digital baseband plus UL BER –– Compact and capable - supporting multi-RAT (LTE-FDD, LTE-TDD) multi-port (CPRI-pair plus two RF Tx and two RF Rx ports per test set)

Figure 1. Schematic of RRH deployment

Remote Radio Head Test, Reference Solution

The remote radio head test, reference solution provides the physical interfaces together with the vector signal analysis and vector signal generation you need to carry out comprehensive functional and performance testing of your RRH.

Characterize the uplink (UL) and downlink (DL), RF air-interface to and from the digital “front-haul”. Connect and control your RRH, using standard “in-service” RF and CPRI and DC power ports, and run pre-defined performance test based on 3GPP standards. Measurement expertise is embedded so you can progress rapidly to valid results without spending time developing custom test hardware and complex test methods.

Find us at www.keysight.com Page 02 Simplify your test station and significantly drive down your total cost of test Target applications Reduce your outlay and improve throughput – Keysight’s reference solution is Verify functionality and optimized for speed, highly configurable and compact. You can complete your test and performance of RRH physical measurement projects fast and with confidence by using the pre-defined test methods interfaces, digital “front-haul” to RF: for RRH downlink and uplink performance verification. CPRI-baseband to/from antenna connection: Simplify your test station and save resources – there is no need to develop and maintain your own custom “front-haul” and RF switching capability – this solution interfaces Development: Rapidly progress directly with your RRH physical-layer with connections for digital-baseband (CPRI), to 3GPP-based RF measurements dual-RF, DC power. with minimal test development. Graphical user interface (GUI) with multi-measurement display

Manufacturing: Drive down cost of test, optimize throughput. Highly integrated test solution, with sample test plans including DUT control

Bench repair: Easily connect via “in service” physical interfaces to perform functional test and diagnostics

Figure 2. Reference solution components for remote radio head test

This highly integrated, multi-RAT, multi-port test solution comes in a compact form factor. Optimized for speed, a single signal-capture provides multiple concurrent measurements, significantly reducing your test time. For ease of analysis the graphical user interface (GUI) displays multiple measurement windows simultaneously. You can compare results against pass/fail limits for simple go/no-go decisions. GUI interactions can be logged as a command-list, which you can use to create automation sequences.

From RRH development to manufacturing and also for repair, the physical interfaces and measurement knowledge provided in this reference solution will simplify your test station, minimize your test development task and maximize your test efficiency.

Find us at www.keysight.com Page 03 Hardware Elements

E6610A remote radio head tester

www.keysight.com/find/E6610A

The E6610A remote radio head tester offers a complete, one-box test unit capable of generating and analyzing the RF and digital signals used in a remote radio head. It includes dual RF Tx/Rx channels and a CPRI interface for connection to the RRH unit under test.

N5767A power supply, 60V, 25A, 1500W

http://www.keysight.com/find/N5767A

Keysight basic DC power supplies offer essential features for a tight budget. The Keysight 1500W, single output N5767A provides universal AC input, GPIB, LAN, USB, LXI compliance, and analog/resistance control of output voltage and current. It delivers solid performance and a variety of basic and enhanced capabilities in a compact 1U package.

N7953A Advanced Power System – dynamic DC power supply

http://www.keysight.com/find/N7953A

The N7953A power supply provides DC power to the RRH unit under test. The Advanced Power System (APS) family was designed with VersaPower architecture to help you overcome your toughest power test challenges by delivering industry-leading specifica- tions and innovative features in an integrated solution for today’s advanced ATE power testing needs.

Find us at www.keysight.com Page 04 Software Elements

N5121A LTE FDD signal creation and analysis software N5122A LTE TDD signal creation and analysis software

www.keysight.com/find/N5121A www.keysight.com/find/N5122A

The LTE signal creation and analysis software includes a package of LTE example waveforms for stimulus and pre-defined signal analyzer measurements for baseband and RF. Key measurements include Channel Power, Occupied Bandwidth, Error Vector Magnitude, Adjacent Carrier Leakage, Spectrum Emissions Mask, CCDF, and BER.

N7624B Signal Studio for LTE/LTE Advanced FDD N7625B Signal Studio for LTE/LTE Advanced TDD

Additional LTE waveforms can be created for the remote radio head tester using the powerful Keysight Signal Studio software: www.keysight.com/find/N7624B www.keysight.com/find/N7625B

Find us at www.keysight.com Page 05 Recommended Reference Solution Configurations

LTE-FDD RRH, 2-TRX (LTE-FDD uplink and downlink test methods, CPRI & RF physical interfaces for two TRX, DC source) Accurately measure uplink and downlink performance, front-haul to RF. This configuration provides ready-to-use test methods for signal generation and signal analysis of LTE-FDD remote radio heads. Support for up-to two transmit receive paths with CPRI (optical) and RF physical interfaces.

–– CPRI (optical) and RF physical interfaces supporting two TRX –– Downlink performance, CPRI to RF –– Uplink performance, RF to CPRI –– Sample test automation

LTE-FDD RRH, 2-TRX, developer (LTE-FDD uplink and downlink test methods, CPRI & RF physical interfaces for two TRX, custom signal creation; for accurate characterization of RRH power consumption) Accurately measure uplink and downlink performance, front-haul to RF. This configuration provides ready-to-use test methods for signal generation and signal analysis of LTE-FDD remote radio heads, plus custom signal creation capability. Support for up-to two transmit receive paths with CPRI (optical) and RF physical interfaces.

–– CPRI (optical) and RF physical interfaces supporting two TRX –– Downlink performance, CPRI to RF –– Uplink performance, RF to CPRI –– Custom signal creation –– Voltage and current characterization

E6610A RRH tester E6610A-503 700 MHz to 2.7 GHz E6610A-BR1 Rx BER test E6610A-AK1 Accessory kit (CPRI cable, 2x SFP+) N5121A LTE FDD signal creation and analysis N5121A-AFP Fixed perpetual licensing N7953A Dynamic power supply, 60V, 16.7A, 100W N7907A Rack mount kit for power supply N7624B Signal Studio for LTE FDD N7624B-BFP Connect to E6610A N7624B-HFP Basic LTE FDD, fixed perpetual N7624B-SFP Advanced LTE FDD, fixed perpetual PS-X10 Reference solution delivery PS-S20 Startup assistance

Find us at www.keysight.com Page 06 LTE-TDD RRH, 2-TRX (LTE-TDD uplink and downlink test methods, CPRI & RF physical interfaces for two TRX, DC source) Accurately measure uplink and downlink performance, front-haul to RF. This configuration provides ready-to-use test methods for signal generation and signal analysis of LTE-TDD remote radio heads. Support for up-to two transmit receive paths with CPRI (optical) and RF physical interfaces.

–– CPRI (optical) and RF physical interfaces supporting two TRX –– Downlink measurement, CPRI to RF –– Uplink measurement, RF to CPRI –– Sample test automation

E6610A RRH tester E6610A-503 700 MHz to 2.7 GHz E6610A-BR1 Rx BER test E6610A-AK1 Accessory kit (CPRI cable, 2x SFP+) N5122A LTE TDD signal creation and analysis N5122A-AFP Fixed perpetual licensing N5767A Power supply, 60V 25A PS-X10 Reference slution delivery PS-S20 Startup assistance

Find us at www.keysight.com Page 07 LTE-TDD RRH, 2-TRX, developer (LTE-TDD uplink and downlink test methods, CPRI & RF physical interfaces for two TRX, custom signal creation; for accurate characterization of RH power consumption) Accurately measure uplink and downlink performance, front-haul to RF. This configuration provides ready-to-use test methods for signal generation and signal analysis of LTE-TDD remote radio heads, plus custom signal creation capability. Support for up-to two transmit receive paths with CPRI (optical) and RF physical interfaces.

E6610A RRH tester E6610A-503 700 MHz to 2.7 GHz E6610A-BR1 Rx BER Test E6610A-AK1 Accessory kit (CPRI cable, 2x SFP+) N5122A LTE TDD signal creation and analysis N5122A-AFP Fixed perpetual licensing N7953A Dynamic power supply, 60V, 16.7A, 100W N7907A Rack mount kit for power supply N7625B Signal Studio for LTE TDD N7625B-BFP Connect to E6610A N7625B-EFP Basic LTE TDD, fixed perpetual N7625B-QFP Advanced LTE TDD, fixed perpetual PS-X10 Reference solution delivery PS-S20 Startup assistance

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Find us at www.keysight.com Page 08 This information is subject to change without notice. © Keysight Technologies, 2016-2018, Published in USA, August 02, 2019, 5992-1563EN