Nemo Walker Air - Keysight · signaling messages, are logged and made available for playback with Nemo Outdoor and for easy analysis and reporting with Keysight’s Nemo post-processing

Page 1Find us at www.keysight.com

Nemo Walker Air

Indoor Benchmarking On the GoNemo Walker Air is a compact multi-technology solution for indoor measuring

and benchmarking. Nemo Walker Air, an Android-based multi-technology

solution, performs extensive synchronized measurements and synchronized script

events. One tablet acts as a master, conducting multi-measurements by sending

commands to up to seven test terminals via Bluetooth® connection. Nemo Walker

Air features POLQA and PESQ voice quality testing, PEVQ-S video quality testing,

and HTML testing with real web browser capability. It uses the internal GPS

receiver of a smartphone to log and display geographical coordinates. An optional

backpack offers a compact carrying solution for the whole system.

Measure and monitor• 5G NR (with Qualcomm

X50/X55 and Samsung Shannon chipset based devices)

• LTE/LTE-A

• WiFi

• GSM

• CDMA

• EVDO

• WCDMA

• HSDPA

• HSUPA

• HSPA+


Nemo Walker Air offers a solution for measuring the air interface of 5G NR (with

Qualcomm X50/X55 and Samsung Shannon chipset based devices), LTE/LTE cat 12, WiFi

(HetNet), WCDMA, HSDPA, HSUPA, HSPA+, EVDO, CDMA, GSM, wireless networks,

and mobile application Quality of Service (Qos) and Quality of Experience (Qoe). Nemo

Walker Air supports 5G NR scanner measurements using PCTEL IBflex and PCTEL HBflex

scanners.

Nemo Walker Air provides you with the best measurement and benchmarking by using

multiple technologies. Nemo Walker Air’s extensive application testing features offer full

application level metrics on voice quality, FTP/HTTP data transfers, HTML browsing,

YouTube video streaming, Facebook testing, LinkedIn testing, Twitter testing, Netflix

testing, WhatsApp testing, Viber testing, mScore testing, BiP testing, Instagram testing,

Dropbox testing, email testing, SMS and MMS messaging, and ping.

Nemo Walker Air’s measurement data gives you a complete and detailed picture of the

radio interface and the quality of the tested applications. The detailed and comprehensive

radio interface data recorded with Nemo Walker Air is optimal for network planning, roll-

out, tuning, verification, optimization, and maintenance. The application performance

metrics are vital in mobile service benchmarking and QoS/QoE evaluation. Continuous

recording of radio interface metrics ensures that the reasons for less than satisfactory

service quality can always be found.

Log files can be uploaded to FTP/HTTP server from master unit or collected manually from

slave units. Nemo Walker Air’s full and proven compatibility with third-party tools enables

also post-processing with any other tool supporting the Nemo file format.

5G NR Scanner MeasurementsNemo Walker Air supports 5G NR scanner measurements using PCTEL IBflex and PCTEL

HBflex scanner devices. The collected metrics are NR-ARFCN, physical cell identity, and

beam index. In addition, PCTEL HBflex supports millimeter wave frequencies up to 40

GHz.


Configurations

The Nemo Walker Air package includes one master tablet and 1 to 7 slave units, all

including the Nemo Walker Air software. Slave units can be chosen from a selection of

the latest smartphone models. The optional Nemo Walker Air backpack includes high-

quality USB batteries, and can be used as a standalone system without an external

power source. The runtime of the complete system is up to 10 hours, making it possible

to use Nemo Walker Air for a complete working day without having to re-charge it. The

backpack also includes one 12/220/110V charging cable for the whole system.


Nemo Walker Air FeaturesNemo Walker Air is an ideal solution for performing indoor measurements and

benchmarking on multiple technologies. It is lightweight, easy to carry and set up, and

continuously operates for up to 10 hours.

• Android-based application

• Support for POLQA and PESQ voice quality testing both in uplink and downlink directions; mobile to mobile and mobile to server; and real-time MOS calculation (optional)

• Support for PEVQ-S video quality testing

• Support for video call quality testing with a third-party algorithm

• HTML testing with real web browser

• Log file recording

• IP capture

• Create and modify scripts with Nemo Walker Air’s built-in script editor

• Real-time display of measurement results

• Real-time status reporting functionality allows Nemo Walker Air to send status reports to Nemo Cloud during measurements

• Collect geographical coordinates with the internal GPS receiver

Technical specificationsSupported

technologies

5G NR, LTE/LTE cat. 12, WiFi (HetNet), HSDPA, HSUPA, HSPA+, WCDMA, CDMA,

EVDO, and GSM networks

Supported

terminals

Master: For example Samsung Galaxy Tab S6 SM-T865N

Slave: Latest smartphone models, including Samsung Galaxy S20+ 5G and OnePlus 8

User interface Predefined workspace and monitors

Map navigation based on Google Maps

Optional BTS position display

Service testing

options

Voice call, video call, HTTP, FTP, SFTP, IPerf, IPerf 3, HTML, YouTube, Facebook,

LinkedIn, WhatsApp, Viber, BiP, mScore, Twitter, Netflix, Instagram, Dropbox, mScore,

email, SMS & MMS, and ICMP ping testing

Voice quality

testing

POLQA (ITU-T P.863)

PESQ (ITU-T P.862)

Positioning GPS, waypoints in indoor measurements

Data management Data upload to FTP/HTTP controlled by the master

Real-time

monitoring

Slave status information, application statistics, user-defined network key performance

indicators (KPIs)


• Create geocoded indoor floorplans on top of Google Maps

• Walk guidance in indoor measurements

• Remote management of drive testing with turn-by-turn navigation (requires Nemo Walker Air with Nemo Cloud Premium option)

• Support for PCTEL IBflex and PCTEL HBflex scanners

• Support for Qualcomm and Samsung Shannon chipsets

• Support for Nemo Cloud

• Support for Nemo Instant Report

Options• Social media testing

• POLQA voice quality

• PESQ voice quality

• PEVQ-S video quality

• Video call quality with a third-party algorithm

• Advanced indoor analysis

• PCTEL IBflex scanning

• PCTEL HBflex scanning

Scanning option

Nemo Walker Air supports PCTEL IBflex, and PCTEL HBflex scanners. The portable

battery-operated scanners make it possible to combine scanning and indoor

measurements with Nemo Walker Air. When using PCTEL IBflex/PCTEL HBflex scanners

for measurements in conjunction with Nemo Walker Air, it is possible to:

• Increase your indoor / walk test efficiency

• Perform multi-frequency scans on all technologies and bands

• Measure single channel coverage

• Measure best server plots compared to the serving cell used by the test terminal

• Improve co-channel and adjacent channel interference detection

• Decode BSIC information from the serving cell, neighbors and other channels

• Utilize Missing Neighbors detection/Neighbor list planning and Planning handover zones

• Detect interference from other sources out-of-band

• Improve detection of Pilot Pollution (No dominance)


Nemo Walker Air backpack

Runtime

• 3x12,800 mAh Anker USB battery pack, runtime ~10 hours

• Runtime of the complete system: 10 hours

• One 12/220/110 V charging cable for the whole system

Operating temperature range

• For Nemo Walker Air backpack from -10 to +50°C 14 to 122°F)

• For tablet and UEs, please check the operating temperature from the device vendors.

• For USB batteries: -10 to +45°C ( 14 to 113°F)

• For scanners, please check the operating temperature from the scanner documentation

Size

• 28.5 x 40 x 10 cm/ 11 x 16 x 4” (mechanics inside backpack)

• 51 x 38 x 13 cm/ 20 x 15 x 5” (backpack)

• 3.6 kg / 7.9 lbs. (excluding terminals)


Nemo Walker Air Key Benefits

Ensure competitiveness of your indoor wireless network by optimizing customer

satisfaction and minimizing churn.

• Indoor benchmarking – Nemo Walker Air provides an ideal solution when there is a need for performing indoor measurements and benchmarking.

• Synchronized measurements – Nemo Walker Air allows users to perform extensive synchronized measurements and synchronized script events on multiple technologies by using one master tablet for centralized control and up to seven test terminals. Master unit ensures that measurements of all slave units are synchronized, even if the timestamps of the individual devices are not the same.

• Lightweight carrying solution – a convenient backpack offers a lightweight carrying solution for the complete system.

• Ease of use – Nemo Walker Air is quick and easy to set up.


Data Views and User InterfaceIndoor measurements

Nemo Walker Air provides indoor map (floorplan) support with an easy-to-use interface

that includes zoom and pan tools. Import digital images into Nemo Walker Air master

and convert them into map files (.tab), or take a picture of a floor plan with the phone’s

camera to be used as indoor map. Nemo Walker Air also supports the iBwave map

format. You can set the scale of the map based on a known distance on the map and

set the geodetic coordinates of the map based on two known coordinate positions.

Nemo Walker Air geocodes indoor floorplans on top of the Google Maps. You can also

modify existing floorplans that are not geocoded directly from the Nemo Walker Air

interface. The measurement route can be drawn on the map with markers.

In Nemo Walker Air, there are two ways to track the location of the Nemo Walker Air unit

indoors and place waypoints, i.e. markers, automatically. With the automated location

mapping feature, a tracking module is used to position the Nemo Walker Air unit and the

measurement route is is automatically displayed on the device´s screen. The automatic

indoor positioning feature enables placing markers automatically by utilizing camera

and other sensors on the terminal to get the speed and position indoors when GPS is

not available. The faults in the network can be pinpointed accurately, ensuring reliable

analysis of the results and allowing you to concentrate on the actual troubleshooting

instead of on adding markers on the map while walking.

When importing an indoor map into Nemo Walker Air, you are also able to create

and use a route plan that you want to follow.Turn logging on, walk according to the

route plan and add a marker when you reach the next waypoint on the map. After the

measurement Nemo Walker Air provides a measurement and marker file that can be

used in post-processing.


Nemo Walker Air performs Distributed Antenna Systems (DAS) testing. Use iBwave

indoor plans or BTS files to see indoor small cell antennas and transmitters displayed

on the indoor map. During a walking test a user-defined visual notification on the map

indicates whether the current DAS antenna is transmitting or not.

Nemo Walker Air exchanges project information directly between iBwave Planner

and Nemo Walker Air. iBwave Planner and Nemo Walker Air both run on the same

device using the IBWC file as a common medium. This allows you to create a floor plan

in iBwave Planner, switch to Nemo Walker Air for the measurements and switch back to

iBwave Planner to create a preliminary design.

All network parameters supported by the terminal’s mobile trace interface, including

signaling messages, are logged and made available for playback with Nemo Outdoor

and for easy analysis and reporting with Keysight’s Nemo post-processing tools. You

can select a custom set of metrics measured by the slave units to be monitored in real

time with the master. Metrics are also visible on the slave screens in real time.

View application testing and RF parameter displays simultaneously. Application QoS/

QoE statistics are displayed in real time for all of the supported applications.


Application TestingNemo Walker Air supports built-in application testing options. It is possible to test voice

and video calls, voice quality, FTP and HTTP data transfers, HTML browsing, YouTube

video quality and streaming, Facebook testing, LinkedIn testing, Twitter testing, Netflix

testing, Instagram testing, Dropbox testing, WhatsApp testing, Viber testing, BiP testing,

mScore testing, Iperf, email testing, ping, and SMS & MMS messages with scripts. The

QoS/QoE KPIs logged by Nemo Walker Air include connection setup delay, download

time, time-to-content delay, throughput, and more.

Voice and video call testing

Nemo Walker Air offers support for manual and scripted voice and video call testing.

Store call-related measurement events in the Nemo Walker Air log file, and include, for

example, call attempt, call connect success, call disconnect, and call failed.

IMS testing (optional)VoLTE/ViLTE testing

Nemo Walker Air offers support to a number of different VoLTE/ViLTE measurements.

Record SIP signaling in real time and RTP data statistics like RTP jitter and Packet loss.

Nemo Walker Air further supports call statistics like call set up time, call success rates,

call failures, and SRVCC statistics.

VoWiFi/ViWiFi testing

With VoWiFi (voice over WiFi) and ViWiFi (video over WiFi) voice and video information

can be sent over the wireless broadband network in digital form. The technology

uses the IEEE 802.11 set of specifications (informally known collectively as WiFi) for

transporting data over wireless local area networks and the internet. Nemo Walker Air

offers support to VoWiFi/ViWiFi measurements in the same scale as with VoLTE/ViLTE

measurements with terminals that support testing over WiFi.

Voice quality testing (optional)

Nemo Walker Air supports voice quality measurements based on the POLQA (ITU-T

Rec. P.863) and PESQ (ITU-T P.862) algorithms. Voice quality (VQ) testing can be

performed both in uplink and downlink directions and in SWB (Super Wideband) and NB

(Narrowband) POLQA and PESQ measurement modes. The latest Samsung terminals

support voice quality testing.


PEVQ-S video quality testing (optional)

PEVQ-S is an advanced framework algorithm developed by OPTICOM for full-reference

video quality analysis in adaptive streaming environments. It combines FR high-accuracy

video-quality measurements with real-time measurements. Nemo Walker Air monitors

video quality with PEVQ-S testing.

WhatsApp testing (optional)

Measure the quality of data transfer when testing WhatsApp VoIP calls and sending and

receiving Whatsapp messages.

Viber testing (optional)

Measure the quality of data transfer when testing Viber VoIP calls and sending and

receiving Viber messages.

BiP testing (optional)

With Nemo Walker Air, you can perform chat message, VoIP and video call testing with

BiP. The test measures the quality of data transfer.

YouTube and Netflix video streaming (optional)

Use Nemo Walker Air to test YouTube and Netflix videos via scripts and collect the

application KPIs.

mScore testing (optional)

mScore testing in Nemo Walker Air performs a test against the mScore server in uplink

or downlink. The test takes a few seconds and measures the quality of data transfer.

Facebook testing (optional)

Facebook users send large quantities of data over cellular networks, for example, when

uploading and downloading pictures and sending messages. Social networking is a

relatively low-bandwidth pursuit, but when combined with other applications such as

cloud storage it has the potential to drive significant levels of traffic.

With Nemo Walker Air you can perform automated Facebook testing while still using

your Facebook account in the same manner as other users. Nemo Walker Air records

attempt, success, and failure events for all Facebook-generated transactions, thus

enabling the assessment of Facebook quality of service KPIs, such as success rates

and delay times for various transaction types.

Application testing options

• Voice and video calls

• Voice and video quality

• FTP(S) data transfers

• HTTP(S) data transfers

• HTML browsing

• YouTube video streaming

• Facebook

• LinkedIn

• Twitter

• Line

• Netflix

• Instagram

• Dropbox

• External application launch

• Email

• Iperf for TCP/UDP

• ICMP Ping

• SMS messages

• MMS messages

• WhatsApp

• Viber

• BiP

• mScore


LinkedIn testing, Twitter testing, Instagram testing, Dropbox testing, and Email testing (optional)

These testing functionalities allow you to perform tests on different services, for example

profile loading, homepage loading, contact list loading, posting feeds, and sharing

information.

FTP sessions

Nemo Walker Air offers support for scripted testing of FTP data transfers. FTP transfer-

related measurement events, stored in the Nemo Walker Air log file, include data

connection attempt, data connection success, data disconnect, and data connection

failed.

HTTP sessions

Nemo Walker Air offers support for scripted testing of HTTP data transfers. HTTP

transfer-related measurement events, stored in the Nemo Walker Air log file, include

data connection attempt, data connection success, data disconnect, and data

connection failed.

ICMP ping testing

Nemo Walker Air offers support for scripted ICMP (Internet Control Message Protocol)

ping testing. Ping-related measurement events, stored in the Nemo Walker Air log file,

include ping attempts, ping failed/succeeded, and ping success rate.

SMS messages

Nemo Walker Air offers support for scripted SMS sending. SMS-related measurement

events, stored in the Nemo Walker Air log file, include SMS send attempts, SMS send

succeeded/failed, and SMS success rate.

Iperf for TCP/UDP

Iperf was developed as a modern alternative for measuring TCP and UDP bandwidth

performance. With Iperf for TCP and UDP testing, it is possible to measure the

maximum performance of a network.


IP packet capturing

Capture application level data with Nemo Walker Air. The data is collected in a separate

logfile in .pcap format. Pcap files can be processed with Nemo Outdoor, Keysight’s

Nemo post-processing tools, or Wireshark. By default, full IP capture, including IP and

all the layers above, is logged. Pcap logfiles can be very large if no filtering is applied.

Therefore, it is practical to apply filtering to capture only the procotol layers of interest.

Capture filter rules are defined in the standard Wireshark filter format.

Nemo Instant Report

Nemo Walker Air supports the Nemo Instant Report feature. This feature greatly

enhances the possibility to create a report on the go after your measurements have

been conducted. In the field, you can produce the report in PDF format instantly after

the measurement session is over, and choose to send the report via email if needed, or

view it on the measurement device on the spot.

ScriptsIt is possible to use script files to run measurements with Nemo Walker Air. All slave

units run different scripts that can be viewed on the master tablet under each measuring

unit as well as on each slave under Script page. When a script is used, Nemo Walker

Air makes voice calls, FTP and HTTP data transfers, HTML browsing, SMS message

sending, email message sending, and ping testing automatically. You can also create

conditional, system-triggered scripts with indefinite or random wait periods that end

when a specific system becomes active or you can use triggers that initiate a voice call

when a specific system becomes active. With nested scripts (scripts inside of scripts)

you can run complex automated measurements combining several scripts. Scripts

can be created and edited with Nemo Walker Air’s integrated script editor. When the


Autologging option is activated, Nemo Walker Air will start logging automatically when a

script is started.

Centrally Controlled Testing with Nemo Cloud

Nemo Cloud is a one-stop-shop platform for centrally controlled network testing. It

allows network operators to remotely operate Nemo Outdoor, Nemo Invex II, and Nemo

Handy/Nemo Handy Autonomous test units and check their status. The location and

status of field units, including the driver’s contact details, are tracked in Nemo Cloud.

Configuration settings can be shared to and between all measurement units within the

same project quickly and easily. Nemo Cloud supports all devices and test protocols

currently supported with Nemo tools.

A single user is able to remotely monitor and manage numerous Nemo measurement

kits in the field thus eliminating the need for two technicians in a test vehicle.

Measurement sessions are created and scheduled in Nemo Cloud and they can be

assigned for individual measurement units or to groups of units. Field unit hardware

configurations and test device details can be verified remotely to avoid failed drive tests

caused by malfunctioning hardware. In addition, hardware failures, incorrect scripts and

other issues can be spotted and corrective measures taken immediately instead of at

the end of a one-week test campaign. By reacting without delay, both time and money

can be saved.

For locally controlled Nemo tools, Nemo Cloud provides file and configuration sharing

between measurement units. This reduces work before the start of the measurement

project in the field and eliminates human errors in local measurement unit configuration.

Page 15This information is subject to change without notice. © Keysight Technologies, 2017 - 2020, Published in USA, June 18, 2020, 5992-2008EN

Find us at www.keysight.com

Learn more at: www.keysight.com

For more information on Keysight Technologies’ products, applications or services,

please contact your local Keysight office. The complete list is available at:

www.keysight.com/find/contactus

Post-ProcessingNemo Walker Air produces measurement files in Nemo file format (.nmf) so

measurement files do not need to be converted before post-processing. Measurement

data can be exported from Nemo Walker Air either by using a data cable or a memory

card. A detailed description of the Nemo file format is included on the product USB. The

file format description contains all recorded events and their parameters.

Documents

Nemo Walker Air - Keysight · signaling messages, are logged and made available for playback with Nemo Outdoor and for easy analysis and reporting with Keysight’s Nemo post-processing