RSTWS LTE Market View CMW500 Communication Test Function

LTE Market View / CMW500 communication test function

Stone Lin

Application and system support

Rohde & Schwarz, Taiwan

April 2012 | LTE Market View | 2

Data Consumption is Driving the Mobile Broadband Market

l Requirements for

additional capacity

l Spectrum

l Investment

l Cell Size

l Fixed Net

l Technology

l Devices

l Applications

Mobile traffic growth out performs fixed net traffic growth


2013/2014 2009/2010

Technology evolution path

GSM/

GPRS

EDGE, 200 kHz DL: 473 kbps

UL: 473 kbps

EDGEevo DL: 1.9 Mbps

UL: 947 kbps

HSDPA, 5 MHz DL: 14.4 Mbps

UL: 2.0 Mbps

HSPA, 5 MHz DL: 14.4 Mbps

UL: 5.76 Mbps

HSPA+, R7 DL: 28.0 Mbps

UL: 11.5 Mbps

2005/2006 2007/2008 2011/2012

HSPA+, R8 DL: 42.0 Mbps

UL: 11.5 Mbps

cdma

2000

1xEV-DO, Rev. 0

1.25 MHz DL: 2.4 Mbps

UL: 153 kbps

1xEV-DO, Rev. A


UL: 1.8 Mbps

1xEV-DO, Rev. B


UL: 4.9 Mbps

HSPA+, R9 DL: 84 Mbps

UL: 23 Mbps

DO-Advanced DL: 32 Mbps and beyond

UL: 12.4 Mbps and beyond

LTE-Advanced R10 DL: 1 Gbps (low mobility)

UL: 500 Mbps

Fixed WiMAX

scalable bandwidth 1.25 … 28 MHz

typical up to 15 Mbps

Mobile WiMAX, 802.16e

Up to 20 MHz DL: 75 Mbps (2x2)

UL: 28 Mbps (1x2)

Advanced Mobile

WiMAX, 802.16m DL: up to 1 Gbps (low mobility)

UL: up to 100 Mbps

VAMOS Double Speech

Capacity

HSPA+, R10 DL: 84 Mbps

UL: 23 Mbps

LTE (4x4), R8+R9, 20MHz DL: 300 Mbps

UL: 75 Mbps

UMTS DL: 2.0 Mbps

UL: 2.0 Mbps


Commercial LTE Networks 64 commercial LTE systems are launched (04/2012)


LTE commercial network - details

312 operators in 98 countries are investing in LTE

64 commercial networks in 34 countries

253 commercial LTE networks commitments

GSA forecasts 129 commercial LTE

networks in 56 countries by end of 2012


l Verizon Wireless Launches The World’s Largest 4G LTE Wireless

Network On Sunday, Dec. 5, 2010

l Verizon 4G LTE is available in over 203 cities and 122 major airports

l Plans to two-third of US population by mid-year 2012,and cover entire

existing nationwide 3G footprint with 4G LTE by end of 2013.

l Verizon Wireless announced that Rohde & Schwarz

has been selected to provide test solutions for

LTE device certification http://news.vzw.com/news/2010/02/pr2010-02-16r.html

Verizon Wireless 4G LTE

http://news.vzw.com/news/2010/02/pr2010-02-16r.html






Verizon Wireless 4G LTE Phone


Verizon Wireless 4G LTE tablets


Germany – Digital Dividend LTE 800 - Broadband Access in rural areas

l Deutsche Telekom starts nation wide LTE-Deployment

Commercially launched their “Call & Surf Comfort via Funk”

LTE service package in FDD 800 MHz spectrum on April 5, 2011.

The company commercially launched LTE service in Cologne

on July 1, 2011 in 1800 MHz (LTE1800).

l Vodafone Germany to deploy LTE network

Launched the first rural LTE mobile broadband

service across Germany on December 1, 2010.

Around 1,500 base stations incorporated LTE

technology by end March 2011, serving thousands of communities.

LTE pilot locations have been established in Berlin. Vodafone plans

to eventually upgrade all base stations in Germany to LTE.


LTE - front runners pushing the wireless industry

l NTT DOCOMO

Launched Japan’s first commercial LTE system

on December 24, 2010 in 2.1GHz spectrum under

“Xi” brand in the Tokyo, Nagoya and Osaka areas.

DoCoMo is reported to be aiming to cover 98% of the

population with LTE by March 2015 and is targeting

30 million LTE subscriptions by this date.

l Softbank

Softbank, a member of the Global TD-LTE Initiative,

commercially launched LTE TDD on February 24,

2012 following a pre-commercial pilot service which

began November 1, 2011. The coverage area

includes Sapporo, Saitama, Chiba, Tokyo,

Yokohama, Kawasaki, Nagoya, Osaka, Kobe,

Fukuoka, Fukuoka City, Kitakyushu City



l SK Telecom

SK Telecom launched commercial LTE service

in Seoul on July1, 2011, using 10 MHz in Band 5 (850 MHz).

The company recently brought forward (by 8 months) it’s

nationwide (82 cities) coverage date, which will now be by

April 2012, and the company will introduce LTE-Advanced in 2013.

l LG U+

LG U Plus launched commercial LTE service

with 500 base stations on July 1, 2011 in Seoul

and 2 other cities, using 10 MHz in Band 5 (850 MHz) spectrum.



l KT

KT commercially launched LTE services in Seoul on

January 3, 2012 and plans to roll out to 84 cities (90%

population) by April 2012. LTE is deployed in re-

farmed Band 3 i.e. 1800 MHz spectrum (LTE1800).

l China Mobile

China Mobile has now launched large-scale

LTE TDD trials consisting of more than 1,000

base stations in Beijing, Shanghai, Hangzhou, Nanjing,

Guangzhou, Shenzhen, and Xiamen.

Commercial services are expected to launch in 2013.



l M1 launched commercial LTE services in the financial

district on June 21, 2011 in 1800 MHz and 2.6 GHz.

Nationwide coverage is planned in 2012.

l SingTel has been trialling LTE in Singapore and

overseas with carriers in which it holds stakes

i.e. SingTel Optus (Australia), Telkomsel (Indonesia), Globe

Telecom (Philippines).

SingTel’s LTE service was commercially launched on

December 22, 2011 using 1800 MHz and 2.6 GHz

spectrum.


The LTE eco-system is building up 347 LTE User Devices Launched by 63 Manufacturers

LTE networks are deployed globally in various frequency bands.

GSA’s analysis of which each of the main LTE bands is supported

by user devices, based on confirmed information,

is as follows:


The LTE eco-system is building up LTE FDD and TD-LTE

For FDD and TDD devices, operating frequencies, and

support for fallback technologies when outside LTE

coverage areas (i.e. HSPA, HSPA+, DC-HSPA+, EV-DO, or

TD-SCDMA) Breakdown by form factor:

41 Modules

31 Tablets

13 Notebooks

2 PC Cards

1 Femtocell

64 Smart phones

131 Routers

64 Dongles


The LTE eco system is building up (cont.) All major infrastructure vendor offer commercial equipment

Mobile World Congress Barcelona Feb 2012 CMW500 Demonstrations


Highlights

CMW500 Demos at R&S booth

l Callbox

l MIMO 2x2 plus external fader

with AMU200

l VoIP voice quality

measurements with UPV

l DC-HSDPA E2E (42 Mbps with

SierraWireless UE)

l Protocol tester

l DC-HSDPA plus MIMO (84

Mbps with Hisilicon UE)

l SRVCC LTE > WCDMA VoIP

demonstration with Nvidia LTE

tablet

CMW500 Demos at customers

l NTT Docomo: TD-LTE

throughput demonstration

l Renesas: DC-HSDPA demo

l Nvidia: SRVCC demo

l Hisilicon: DC-HSDPA+MIMO

demo

l Comprion: LTE USIM testing

l 7Layers: LTE USIM solution

l Cognovo: LTE Advanced with

SMU & FSW


R&S Booth @ MWC 2012


CMW500 Protocol Tester Demos

DC-HSDPA + MIMO SRVCC Voice HO


PTM showing stable 84 Mbps in WCDMA


CMW500 PT SRVCC Demo

http://youtu.be/jzpWNpkr3aA


CMW500 Callbox Voice Quality Demo

http://youtu.be/9s3zeeY_t8E


LTE Rel-10 CA Demo with SMU & FSW

http://youtu.be/slIqGze7zrQ


NTT Docomo TD-LTE Demo

Interoperability Tests (IOT) for Operator Acceptance Tests


From specification to commercial service

Specification Lab test Test bed Field test

Increase in cost and time to fix problems

Commercial roll out

Approximating reality


Lab IOT Testing versus Conformance Testing

Conformance Testing

l Ensure implementation of functionality according to a particular

release of the 3GPP specification

l Common interpretation of specification by standardized test, e.g.

TTCN based scripts provided by ETSI

l Tests are prioritized by GCF and PTCRB, i.e. they reflect a

common view of the industry on test requirements

l Basic assumption of Conformance Testing is that the mobile is

already conform with the standard. This results in rather strict

testing procedures, e.g. a test preamble with strict message

constraint matching has to be passed by the UE before the test

procedure itself is executed.


Lab IOT Testing versus Conformance Testing

Lab IOT Testing

l Reproduce real-life scenarios in a lab environment

l Based on operator requirements for terminal acceptance

l Considers not only conformance with the standard but also

performance testing to verify user experience, e.g. data

throughput

l Network specific tests including specific network parameter and

services

l Allows feature testing and acceptance although UE would not

pass strict conformance testing or conformance tests are even

not available or specified yet.


Lab IOT Testing versus Field Trials

Lab IOT Testing provides

l reproducible and independent environment

l supports fully automated testing

l provides mean for negative testing

l provides enhanced analysis capabilities

l more cost efficient than Field Trials

Conclusion

l Conformance Testing, Lab IOT Testing and Field Trial

complement each other

l Problems and issues identified during Lab IOT are reducing

costs significantly and will decrease time to market.

Verizon LTE Band 13 Terminal Testing Solution


Verizon LTE Band 13 Test Support R&S

GMSS T1, GMSS T2, SVD GMSS

InterRAT Performance, SVD InterRAT

eHRPD Conformance

LBS Performance

SVD Conformance & Performance

MM SMS, eHRPD SMS

MM OTADM

MM Device UICC (USIM, ISIM) Interaction

LTE Over the Air Radiated Performance

Data Throughput

OTADM

3GPP Band 13 RF and RRM Conformance

LTE Supplementary RF Conformance

3GPP Band 13 Signaling Conformance

LTE Supplementary Signaling Conformance

Data Retry Test Plan

SMS Test Plan

Device UICC (USIM, ISIM) Interaction

VZW

Compliance

Test Plan

3GPP Band 13 Lab

Conformance Test Plan

Safe For Network Test Plan

CMW-PQA Performance Quality Analysis End 2 End Throughput and Call and Mobility Performance


End to End (E2E) Data and Call Performance

Good service ideas may fail

when the required

data rate is not available

l Crucial for user experience of data services

l Verify quality of data and voice services l Service availabitliy

l At cell borders

l During handovers


Testing UE Performance with Realistic Radio Conditions

C2K BTS LTE BTS

3G BTS

Throughput and call performance

measurement with

l Noise (AWGN, OCNS)

l Fading

l During HO

l Following standards

supported

l WCDMA

l LTE

l 1xEVDO


CMW-PQA

l easy to use application under RS CONTEST

l Uses CMW500 + AMU

l flexible configuration of throughput and call performance tests

l User defined PASS/FAIL criteria

l Powerful graphical reporting tools


Performance Quality Analysis for Data Throughput and Call Performance

General solution for

l measuring end to end throughput

l identify bottlenecks in the UE implementation from application layer

down to physical layer

l KPIs for

– mobility,

– measurement reporting and

– call set-up success rate

l benchmark different mobiles

l Create and execute data performance test plans


CMW-PQA Hardware Setup

Fader – AMU200A

CMW500 DUT

Client PC & Testexec.

Dig-IQ

radio link

Modem

control

DAU


CMW-PQA: Throughput Parameters / Data Services

l Network and cell parameters

l Call parameter

l Powers

l Ior, Ior/Ioc (S/N), Power Sweep

l Fading

l All 3GPP fading profiles are supported

l User defined fading profiles (future release)

l Data Sources

l IPERF, FTP, HTTP, PING

l External data applications (Only on external PC)

LTE Technology Introduction


LTE Key Parameter

Frequency Range UMTS FDD bands and UMTS TDD bands

Channel bandwidth

1 Resource Block (RB)

=180 kHz

1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz

6 RB 15 RB 25 RB 50 RB 75 RB 100 RB

Modulation

Schemes

Downlink QPSK, 16QAM, 64QAM

Uplink QPSK, 16QAM, 64QAM ( optional for handset)

Multiple Access Downlink OFDMA (Orthogonal Frequency Division Multiple Access)

Uplink SC-FDMA (Single Carrier Frequency Division Multiple Access)

MIMO technology Downlink

Wide choice of MIMO configuration options for transmit diversity,

spatial multiplexing, and cyclic delay diversity (max. 4 antennas at

base station and handset)

Uplink Multi-user collaborative MIMO

Peak Data Rate Downlink

150 Mbps (UE category 4, 2x2 MIMO, 20 MHz)

300 Mbps (UE category 5, 4x4 MIMO, 20 MHz)

Uplink 75 Mbps (20 MHz)


LTE UE categories (downlink and uplink)

UE category

Maximum number of

DL-SCH transport block

bits received within TTI

Maximum number of bits

of a DL-SCH transport

block received a TTI

Total number

of soft

channel bits

Maximum number of

supported layers for

spatial multiplexing in DL

1 10296 10296 250368 1

2 51024 51024 1237248 2

3 102048 75376 1237248 2

4 150752 75376 1827072 2

5 302752 151376 3667200 4

MIMO = Multiple Input Multiple Output

UL-SCH = Uplink Shared Channel

DL-SCH = Downlink Shared Channel

UE = User Equipment

TTI = Transmission Time Interval

UE category

Maximum number of

UL-SCH transport block

bits received within TTI

Support 64QAM

in UL

1 5160 No

2 25456 No

3 51024 No

4 51024 No

5 75376 Yes

~300 Mbps

peak DL data rate

for 4x4 MIMO

~75 Mbps peak

UL data rate

~150 Mbps

peak DL data rate

for 2x2 MIMO


E-UTRA

Operating

Band

Uplink (UL) operating band Downlink (DL) operating band

FUL_low – FUL_high [MHz] FDL_low – FDL_high [MHz]

1 1920 – 1980 2110 – 2170

2 1850 – 1910 1930 – 1990

3 1710 – 1785 1805 – 1880

4 1710 – 1755 2110 – 2155

5 824 – 849 869 – 894

6 830 – 840 875 – 885

7 2500 – 2570 2620 – 2690

8 880 – 915 925 – 960

9 1749.9 – 1784.9 1844.9 – 1879.9

10 1710 – 1770 2110 – 2170

11 1427.9 – 1447.9 1475.9 – 1495.9

12 699 – 716 729 – 746

13 777 – 787 746 – 756

14 788 – 798 758 – 768

17 704 – 716 734 – 746

18 815 – 830 860 – 875

19 830 – 845 875 – 890

20 832 - 862 791 - 821

21 1447.9 - 1462.9 1495.9 - 1510.9

22 3410 - 3490 3510 - 3590

LTE/LTE-A Frequency Bands (FDD/TDD)

E-UTRA Operating

Band

Downlink (DL) / Uplink (UL) operating band

Flow – Fhigh [MHz]

33 1900 – 1920

34 2010 – 2025

35 1850 – 1910

36 1930 – 1990

37 1910 – 1930

38 2570 – 2620

39 1880 – 1920

40 2300 – 2400

41 2496 – 2690

42 3400 – 3600

43 3600 – 3800

E-UTRA

Operating

Band

Uplink (UL) operating band Downlink (DL) operating band

FUL_low – FUL_high [MHz] FDL_low – FDL_high [MHz]

23 2000 – 2020 2180 – 2200

24 1626.5 – 1660.5 1525 – 1559

25 1850 – 1915 1930 – 1995


LTE Downlink Frame Structure

L1/2 downlink

control channels

Downlink

reference

signal

Downlink

reference

signal

1 radio frame = 10 ms

1 slot = 0.5 ms

1 subframe = 1 ms

#0 #1 #19

l User data

allocations

Screenshot of R&S

SMU200A signal generator


TDD versus FDD

Downlink

Uplink

Guard band needed

Down- and Uplink

No duplexer

needed Timing and UL/DL

configuration needed

Independent

resources in uplink +

downlink


TDD versus FDD Frame

0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

Subframe = 1ms

Radio frame

slot

#0 #1 #2 #3 #4 #5 #6 #7 #8 #9

FDD:

#0 #2 #3 #4 #5 #7 #8 #9

DwPTS UpPTS GP

DwPTS UpPTS GP

TDD: Depends on configuration

R&S CMW500 Wideband Radio Communication Tester RF Tester Overview


CMU200var02

signaling tester

CMU200var30

non signaling tester

CRTU

protocol tester

CMW500 Platform Overview

RF test in

production

Protocol and application test

RF test in R&D

CBT

Bluetooth tester


CMW500 Wideband Radio Communication Tester


DVB-T

HSPA HSPA+

WCDMA

EDGEevo

GSM/(E)GPRS

CDMA2000

1xEV-DO

LTE-FDD

TD-LTE

TD-SCDMA

Mobile WiMAX

WLAN abgn Bluetooth

FM stereo

GPS

CMMB

T-DMB

CMW500 – Multi Technologies Support


DVB-T

HSPA HSPA+

WCDMA

EDGEevo

VAMOS

GSM/(E)GPRS

CDMA2000

1xEV-DO Rev. 0 A B

LTE-FDD

TD-LTE

TD-SCDMA

Mobile WiMAX

WLAN agn Bluetooth

FM stereo

GPS

CMMB

T-DMB

CMW – Signaling (call box) Support

MIMO 2x2

Available

Planned


CMW500 Hardware Configuration Single CMW500 LTE Mobility / I-RAT testing

LTE

LTE WCDMA

CDMA GSM

Baseband Function RF

RF2

Intra-LTE / Inter-RAT Handover Testing

LTE

LTE

LTE

WCDMA

LTE

CDMA

LTE

GSM

CMW-B300

Baseband Option

CMW-B300

CMW-B200

Single Box supporting: l LTE up to two cells

l Inter-RAT incl. HO to/from

l GSM

l WCDMA

l C2K (HRPD, 1xRTT)


W = WinIQSIM2

V = waveform library M = multi evaluation

measurement

CMW500 – Scalable NonCellular Configuration


W = WinIQSIM2

V = waveform library

Signal Generator


CMW500 signal generation (ARB) implementation options

l Arbitrary Waveform Generator

l WinIQSIM2 (W)

l R&S wave form creator tool for

external PC

l seamless switch in-between

technologies due to

multisegment function

- no extra loading time!

l R&S development expert

support for waveform creation

l wave form library (V)

l new option model, “ready to go files”

created by R&S development experts in

conjunction with chipset

partners, etc.

l do it your self

l wave forms files created by tools like

MATLAB are also running on CMW


Signal Analyzer

M = multi evaluation

measurement


CMW500 RF Test Multi Evaluation Measurement

l transmitter verification application

(standard specific)

l all Tx measurements in one shot, no

second sampling required

l all results are based on the same

sampled data set

GSM/GPRS/EGPRS

example


CMW500 RF test in production 3 port front-end & dual tester configuration

l 3 port front-end gives you

l connectivity for to up to 3 ports in

order to connect multiple chips in

one DUT (sequential test)

l more efficient use of the tester

while loading/unloading time will be

eliminated (two fixtures - one DUT

will be measured while the second

one will be prepared to measure)


CMW500 RF test in production 3 port front-end & dual tester configuration

l dual tester configuration

…. gives you twice as much

l front-end one and two allows you

independent parallel testing

– 2 Vector Signal Analyzers

– 2 Vector Signal Generators

R&S CMW500 Wideband Radio Communication Tester LTE RF Testing


Measurements as usual? No! – Multi-evaluation measurement for LTE FDD/TDD

Power, power control

Modulation

Spectrum

Resource

Allocation

Table


Details LTE FDD and TD-LTE

multi evaluation Tx measurements KM500, KM550

l Supported measurements Modulation (see 3GPP TS36.521 9.5x)

l EVM vs. sub-carrier

l EVM, Magnitude error and Phase error vs. SC-FDMA Symbol

l EVM, Magnitude error and Phase error per slot

l Frequency Error

l IQ Origin Offset

l Spectrum flatness

l IQ Constellation diagram

l Inband emissions


Spectral flatness


EVM vs. subcarrier


l 3 modulation accuracy requirements

l EVM for the allocated RBs

l LO leakage for the centered RBs

l I/Q imbalance in the image RBs

Impact on Tx modulation accuracy evaluation

frequency

RF carrier

RB0 RB1 … … RBN-1 RBN

Power level IQ component

EVM,

Spectrum flatness

Frequency error

|∆f| = ± 0.1ppm+15Hz

In-band emissions


In-band emissions measurement

Used allocation

< ½ channel bandwidth

Channel bandwidth (e.g. 20 MHz = 100 RB)

l Estimate the interference to non-allocated resource blocks, as the

UE shares transmission bandwidth with other UE’s,

l 3 types of in-band emissions: general, DC image and IQ image.


Modulation quality: Constellation diagram

LTE PUSCH uses

QPSK, 16QAM and 64 QAM

modulation schemes.

In UL there is only 1 scheme

allowed per subframe


Error Vector Magnitude (EVM) EVM vs. symbol

Time

Fre

qu

en

cy

1 SC-FDMA symbol

1 Time Slot = 0.5 ms 7 SC-FDMA symbols (normal Cyclic Prefix (CP))

1 subframe = 1 ms

[minimum Transmit Time Interval (TTI)]


Error Vector Magnitude (EVM) EVM vs. Symbol

EVMhigh EVMlow




l Supported measurements Power

l Peak Power (displayed in modulation measurements)

l RB (recourse block) Power (displayed in Inband Emission meas.)

l Transmit Power (displayed in modulation and SEM meas.)

l Power vs. Subframe


Tx power aspects RB power = Ressource Block Power, power of 1 RB TX power = integrated power of all assigned RBs

TX power value

corresponds

to the maximum

UE output power

depending on

the settings!


Power vs. Subframe

l Basically power vs. Time measurement

l Power can change on

TTI base

(Subframe base)

l Analyse uplink power

distribution




l Supported measurements Spectrum (see 3GPP TS36.521 9.5.x)

l Adjacent Channel Power (ACP)

l Occupied Bandwidth (OBW)

l Spectrum Emission Mask (SEM)


Output RF spectrum emissions

Spurious domain

RB

Channel bandwidth Spurious domain

ΔfOOB

ΔfOOB

E-UTRA Band

From

modulation

process

Harmonics, parasitc

emissions,

intermodulation and

frequency conversion

Worst case:

Resource Blocks allocated up

to/at channel edge

ACLR SEM


LTE ACLR requirements

l UTRA ACLR 1+2 two 3G neighbors 5MHz each

l EUTRA ACLR one LTE neighbor up to 20MHz

l EUTRA measured with rectangular filter

WCDMA measured with RRC filter

E-UTRAACLR1 UTRA ACLR2 UTRAACLR1

RB

E-UTRA channel

Channel

ΔfOOB


Adjacent Channel Leakage Ratio, ACLR

2 adjacent WCDMA

carriers, 5MHz BW

1 adjacent LTE

carrier, 20MHz BW

Active LTE

carrier, 20MHz BW


Spectrum Emission Mask, SEM

99%

OBW: Occupied bandwidth, defined as 99% of power spectal density

1 MHz RBW

SEM: Spectrum ‚Emission Mask, measured with different resolution bandwidth,

1 MHz (away from carrier) or 30 kHz (close to carrier) RBW

30 kHz RBW


SEM limit definition

Spectrum emission limit (dBm)/ Channel bandwidth

ΔfOOB

(MHz)

1.4

MH

z

3.0

M

Hz

5

M

Hz

10

M

Hz

15

M

Hz

20

M

Hz

Measurement

bandwidth

0-1 -10 -13 -15 -18 -20 -21 30 kHz

1-2.5 -10 -10 -10 -10 -10 -10 1 MHz

2.5-5 -25 -10 -10 -10 -10 -10 1 MHz

5-6 -25 -13 -13 -13 -13 1 MHz

6-10 -25 -13 -13 -13 1 MHz

10-15 -25 -13 -13 1 MHz

15-20 -25 -13 1 MHz

20-25 -25 1 MHz

Limits depend

on channel

bandwidth

Limits

dependent

on offset from

assigned BW


time

frequency

QP

SK

, 1

6Q

AM

or

64

QA

M m

od

ula

tio

n

UE1

UE4

UE3

UE2

UE5

UE6

*TTI = transmission time interval

** For normal cyclic prefix duration

1 resource block =

180 kHz = 12 subcarriers

1 slot = 0.5 ms = 7 SC-FDMA symbols** 1 subframe = 2 slots = 1ms= 1 TTI*

Subcarrier spacing = 15 kHz

Additional measurement – RB allocation table frequency

time


Additional measurement – RB allocation table

l Recource Block allocation

l UL recource block allocation

can change flexible over time

l Depending on scheduling

l E.g. used RMC settings

frequency

time

20MHz channel BW = 100 RBs max


Details LTE FDD signaling Rx Measurements

l Rx Measurements

l Counting

ACKnowledgement (ACK)

NonACKnowledgement (NACK)

l Calculating

l BLER (NACK/ALL)

l Throughput [kbps]

l Flexibility

l Change paramters directly in the measurement “on the fly”


RX sensitivity level

Channel bandwidth

E-UTRA 1.4 MHz

(dBm)

3 MHz

(dBm)

5 MHz

(dBm)

10 MHz

(dBm)

15 MHz

(dBm)

20 MHz

(dBm)

Duplex

Mode

1 - - -100 -97 -95.2 -94 FDD

2 -104.2 -100.2 -98 -95 -93.2 -92 FDD

3 -103.2 -99.2 -97 -94 -92.2 -91 FDD

4 -106.2 -102.2 -100 -97 -95.2 -94 FDD

5 -104.2 -100.2 -98 -95 FDD

6 - - -100 -97 FDD

Criterion: throughput shall be > 95% of possible maximum

(depend on RMC)

Sensitivity depends on band,

channel bandwidth and RMC

under test

Extract from TS 36.521


CMW500 LTE FDD capability list

l Application note 1CM94 describes

how to do the supported tests in

manual operation using CMW500

l step by step guide according to

3GPP TS 36.521 V9.5.0

clauses 6 and 7

l with R&S® CMW500 firmware

Version 2.1.30


CMW500 LTE CMWrun

l CMWrun CMW-KT055 allows automated test of supported

36.521 test cases

l Automatically takes

care about the

3GPP V9.5.0

depending on

installed SW version


Would you like to know more?

LTE application notes from Rohde & Schwarz

http://www2.rohde-schwarz.com/en/technologies/cellular_standards/LTE/?_view=downloads&downloadtype=20


Read more…

1MA-169 Application Note 1MA-166 Application Note

http://www.rohde-schwarz.com/appnote/1MA169






WCDMA / HSPA / HSPA+ Dual Carrier New features with CMW FW 2.1.30


l Start the WCDMA signaling menu

l Enable the Cell

l For Dual Carrier change the scenario from standard cell to Dual Carrier

(see config setting from WCDMA signaling)

l Select the UE category for HSDPA / HSPA+ / DC-HSDPA or register the UE

WIZARD

Usability features… WCDMA / WIZARD, with option CMW-KS411 – user defined settings


l To activate the “wizard” press WIZARD hardkey

on CMW500 front panel

l Following pre-settings are available for now:

“Max Throughput HSDPA”:

l Packed data: HSDPA / 384kbps UL

– User defined settings acc. UE category for

max. throughput

– Downlink physical

channels level

configuration for

best throughput

performance

Usability features… WCDMA / WIZARD, with option CMW-KS411 – user defined settings

l Wizard setting are based on:

– use reported, if available“ from UE

Capability reading after registration

(default setting)

– „Manual UE capability entry to force

the settings acc. Certain category to be

tested


Usability features… UE Event log, part of basic signaling features set

Call setup procedure

Channel Handover

Radio bearer

established

Call release

l Benefit:

l Easy trouble shooting by signaling procedures like registration, connection

establish, handover etc...


Message Logging in 3G with CMW-KT011 for WCDMA, HSDPA, DC-HSDPA signaling and reduced signaling

LAN cable

RF

Link

Message Recorder

Records logfile on

PC in user specified

directory

Message

Analyzer +

Recorder

LAN

switch

WCDMA / HSPA / HSPA+ Dual Carrier…


HSPA Rel8. Dual Cell Dual cell or Dual carrier?!

The Technical specification to

follow is 3GPP, TR 25.825

“Dual-Cell HSDPA operation”

V1.0.0, May 2008.

l Rel. 8: Dual-Cell (Dual Carrier)

combines the signal of 2 adjacent carriers

l Rel. 9: DL Dual-Band and UL Dual-Cell

l DL dual band combines 2 carriers (10MHz)

in diff. Bands

l UL dual cell combines 2 adjacent carries in

UL

l Rel. 10: combination of DB and DC

l 2 pairs, Dual-Cell in 2 diff. Bands, 4 carriers

in total

Carrier #2 (DL) (secondary serving

HS-DSCH Cell)

P-CPICH HS-SCCH (1..4) HS-PDCH (up to 15)

Carrier #1 (DL) (Serving HS-DSCH Cell)

P-CPICH P-SCH S-SCH P-CCPCH S-CCPCH PICH AICH DPCH HS-SCCH (1..4) HS-PDCH (up to 15)

HSDPA-UL signal HS-DPCCH with ACK, NACH and CQI for the 2 carriers

*same timing for both DL carriers

http://www.3gpp.org/ftp/Specs/archive/25_series/25.825/


HSPA Rel8. Dual Cell (Dual Carrier) Channel, Band handover and UE Report in Dual Carrier..

l Same behavior/procedures as in single carrier connection!

l Relation between UL channel and DL channels for carrier #1

and carrier # 2 is fixed

l Channel Handover supported as for single cell

l Band Handover supported as for single cell

l UE report for the main and for the second carrier as well


HSPA Rel8. Dual Cell (Dual Carrier) UE categories...

UE category max. number

of HS-DSCH

codes

max. number

of bits per

block

modulation max. raw data

rate

Support in

CMW500

21 15 23370

QPSK

16QAM

23.4 ✓

22 15 27952 QPSK

16QAM 28 ✓

23 15 35280

QPSK

16QAM

64QAM

35.3 ✓

24 15 42192

QPSK

16QAM

64QAM

42.2 ✓

* all Rel.8 Categories w/o MIMO support


HSPA Rel8. Dual Cell Solution in the CMW500, scheduling

l Independent Power configuration

for main and secondary carrier

l Flexible and Independent

scheduling for both carriers

based on:

l H-sets acc. 3GPP: H-Set 12

l CQI Table, fixed value for carrier

1 and 1 and follow-UP CQI as

well

l User defined settings*

(option CMW-KS411 required)

on which the „wizard“ applies for

max. throughput settings acc.

the UE category

l Focus: tests acc. 3GPP and R&D

features as well

The unique DC-HSDPA solution on the market with so much flexibility

for R&D!


HSPA Rel8. Dual Cell (Dual Carrier) Solution in the CMW500, throughput meas.

l ACK / NACK

measurements

with:

l BLER figures for

both carriers

(receiver tests, e.g.

TS 34.121.6.2A)

l Median CQI for

both carrier

l Throughput figures

carrier #1 carrier

#2 and total

throughput

l HARQ process acc.

the RV version

l Throughput

monitor


DC-HSDPA Rel8. RF tests for Dual Carrier defined in 3GPP TS 34-121

l BLER Search Testplan

for both carries with

handover between diff.

Channels and Bands


HSPA Rel8. Dual Cell RF tests for Dual Carrier defined in 3GPP TS 34-121

l CMWrun results for

BLER search acc.

3GPP TS-34.121 / 6.3A

l Settings:

l H-set 12

l Channel config acc. Table

bellow. (Ref. 3GPP TS

34.121


HSPA Rel8. Dual Cell (Dual Carrier) RF Tests for Rel. 8:

l What‘s about TX

tests for Dual Carrier

in 3GPP?

l Dual Carrier is a pure

DL feature. None

changes on the UL /

HS-DPPCH signal in

the Uplink.

l HACK coding words

for ACK / NACK

cases in single

carrier and

combinations for

Dual Carrier do have

the same length.


Outlook: HSPA Rel8. Dual Carrier some details about current status, 42Mbps in DL:


CMW500 WCDMA FDD capability list

l Application note 1CM95 describes

how to do the supported tests in

manual operation using CMW500

l step by step guide according to

3GPP TS 34.121

chapter 5 and 6

l with R&S® CMW500 firmware

Version 2.1.30

R&S® CMW270 / 500 Wideband Radio Communication Tester WLAN IEEE 802.11 a / b / g / n / ac Test Capabilities


FM-Stereo

Radio

NonCellular Software Package CMW-PK60 WLAN / Bluetooth / GPS / FM Stereo Radio

CMW-PK60

Wireless RF Bundle

CMW-KW650

WinIQSIM2

802.11 a / b / g

CMW-KW651

WinIQSIM2

802.11 n

CMW-KW610

WinIQSIM2

Bluetooth

CMW-KM650

Tx Meas

802.11 a / b / g

CMW-KM651

Tx Meas

802.11 n

CMW-KM610

Tx Meas.

Bluetooth BR EDR

CMW-KM645

Tx Meas

FM Stereo Radio

CMW-KV645

Waveform Library

FM Stereo Radio

CMW-KW620

WinIQSIM2

GPS

GPS


Transmitter Verification l Power Measurements

l Burst Power

– Average / Peak

l Power vs. Time

l Modulation Accuracy

l EVM vs.

– Symbol / Carrier / Chip

– Average / Peak

l Frequency Error

l Symbol Clock Error

l Chip Clock Error

l I/Q

– Constellation Diagram

– Offset / Phase Error / Amplitude Imbalance

l Spectrum Analysis

l Spectral flatness

l Transmit spectrum mask

OFDM and DSSS

Analysis Mode

CMW-KM650 CMW-KM651


WLAN – Multi Evaluation Measurement

l transmitter verification application

(standard specific)

l all Tx measurements in one shot, no

second sampling required

l all results are based on the same

sampled data set


Multi Evaluation Measurement Scalar

CMW-KM650 CMW-KM651


Test Setup for MIMO Tx Verification

WLA

N

DU

T

or

Shield Box

Over-The-Air

Single-channel

configuration

sufficient

Power Combiner


WLAN MIMO Transmitter Verification

l Power Measurements

l Burst Power all

– Average / Peak

l Power Average vs.

Space Time Stream

l Modulation Accuracy

l EVM all / data / pilot

l Frequency Error

l Modulation Coding Stream

Analysis

CMW-KM652


WLAN Signaling – Access-Point Emulation

CMW-KS650

11 b added 2Q/2012

CMW-KS651

Basic Signaling 802.11 n

SISO

CMW-KS670

Generic Signaling

802.11 n

2 x 2 MIMO

Start

Signaling

WLAN

802.11 b = 802.11 g (DSSS)

Basic Signaling 802.11 a / g (OFDM) / b

SISO


WLAN 11 a/g Signaling / Network-Emulation (Access Point)

CMW-KS650


WLAN 11 n Signaling / Network-Emulation SISO (Access Point) CMW-KS651


Receiver Quality Test – PER CMW-KS65x

http://youtu.be/fV1njS9fof4


WLAN Signaling

WLAN e2e Application & Throughput Test Planne

d for

V3.0


WLAN Message Analyzer

CMW-KT650

WLAN

Message Analyzer


CMW-KT650 WLAN Message Analyzer

R&S Terminal Testing Solutions for IMS and VoLTE


Introduction IMS – IP Multimedia Subsystem Definition

l TBD


IMS Terminal Testing Test Setup

PC Workstation

Automation

Manager

Serving Scenario

IMS Server Simulation

and Test Cases

CMW

Protocol

Tester


CMW500

IMS Terminal Testing Solution Use Case: IMS Testing

When the scope of testing is IMS

l Test purpose:

l SIP header & signalling

l IMS registration & authentication

l VoLTE signaling

l SMS signaling

LTE Serving Scenario

IMS Test Case

controls

MASTER


CMW500

IMS Testing Solution Use Case: IMS as a Service

l When the scope of testing is

not IMS but IMS is a service

required to achieve the

test purpose

l Required for several

VZW Test Plans

l Seamless integration

with MLAPI

l IMS Registration

Available now

l SMS and VoLTE MO/MT

Available 2012Q1

MLAPI Test Script

IMS Serving Scenario

MASTER


VoLTE – Voice over LTE From IMS to VoLTE

IMS

One Voice

VoLTE

IMS standardization laid the ground work with an all-over-IP service network architecture already in 3GPP Rel5

Network roll-out hampered by “IMS complexity trap”

One Voice Industry Initiative specified a particular profile for voice & SMS over IMS to reduce complexity and specify a minimum feature set

Includes Single Radio Voice Call Continuity (SR-VCC)

GSMA VoLTE Initiative has adopted One Voice specification

Focus on entire end-to-end voice and SMS service and emphasize on Roaming and Interconnect Interfaces

Promoting CSFB as gap filler until SR-VCC is available

Now industry standard also promoted by NGMN Alliance

R&S is planning to provide a complete test solution for VoLTE


LTE SMS over IMS Test Plan CMW-KF576:

SMS over IMS

eHRPD and LTE SMS over IMS

CMW-KAF70:

SMS over IMS

Multi Mode

IMS VoIP Compliance Test Plan

Planned

CMW-KAF73:

IMS VoIP

Operator IOT – IMS Test Plans R&S Test Solution for Verizon Wireless


Operator IOT – IMS Test Plans SMS-over-IMS

l CMW-KF-576: Verizon specified a test plan for SMS-over-IMS

over LTE

l 3GPP and 3GPP2 format testing

l Retry delivery testing

l Retry IMS attach testing

l correct User ID handling from ISIM

l released

l CMW-KAF70: Verizon specific test plans for Multi-mode and

eHRPD devices

l Support of IMS over eHRPD

l released


l PESQ (Perceptual Evaluation of Speech Quality) is an

established mechanism for speech quality measurements.

l It rates speech quality scale from -0.5 (bad) to 4.5 (excellent).

l PESQ is supported by the R&S® UPV Audio Analyzer.

CMW-KAF10: VoLTE R&D package Principle of PESQ measurements


to CMW - B660 A/B LAN switch

IMS Test Cases

CMW 500

Media Echo

l CMW500 protocol tester establishes IMS connection

to UE

l User talks into the UE and IMS media entity on top of

CMW500 echoes back

l Test focus:

l User analyzes the echo qualitatively

l Combination of uplink and downlink

CMW-KAF10: VoLTE R&D package Basic Echo Verification



IMS Test Cases

CMW 500

Media Echo

IMS Client

l IMS client on second laptop + LTE USB dongle

simulate real VoLTE client

CMW-KAF10: Demo set-up Basic Echo Verification


l CMW500 protocol tester

establishes IMS connection to UE

l Audio reference sequence (PESQ

sequence) is provided from UPV to

UE, sent to CMW500 in uplink, and

echoed back by IMS media entity

on top of CMW500 in downlink

l Test focus:

l UPV analyzes the audio received by

the UE according to PESQ

l Combination of uplink and downlink

to h

ea

dse

t mic

rop

ho

ne

UPV

from

he

ad

se

t sp

ea

ke

r

IMS Test Cases

CMW500

Media Echo


CMW-KAF10: R&D package Audio Analysis of Echo


Outlook – DAU IMS User Interface

IMS configuration

IMS registration

SMS over IMS


IMS


Thank you

for your attention!

Documents

RSTWS LTE Market View CMW500 Communication Test Function