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Document Revision for Xi Version 8.0.2May 2007All contents of this document are the property of X-TEL Communications, Inc. and are provided for information purposes only. Theinformation in this document is subject to change without notice. X-TEL will not be held liable for technical or editorial omissionsmade herein, and will not be held liable for incidental, consequential or other similar damages resulting from the use of its products.

Copyright © X-TEL Communications, Inc. 2007, All Rights Reserved.



GSM / EDGE / WCDMA Product Overview

Copyright © X-TEL Communications, Inc. 2007

ContentsX-TEL Company Background ......................................................................................................4Introduction.................................................................................................................................5Key Benefits................................................................................................................................9Real-Time / Playback Data Display............................................................................................11

Phone Status Display............................................................................................................12

WCDMA Intra Status Screen.................................................................................................12GSM Neighbor Status Display...............................................................................................13WCDMA Neighbor Status Display .........................................................................................13WCDMA Pilot Pollution Analysis............................................................................................14GSM and WCDMA Missing Neighbor Analysis......................................................................17Layer 3 Message Display......................................................................................................18GSM-WCDMA Handover Analysis.........................................................................................20GSM Phone Quality Monitor..................................................................................................20GSM/WCDMA Dynamic Graphs ............................................................................................21AMR Codec Displays............................................................................................................22

AMR Codec Table.............................................................................................................22AMR Codec UL and DL Distribution..................................................................................22

GSM/WCDMA System Information........................................................................................23

GSM Scanning Displays........................................................................................................23WCDMA Scanning Displays..................................................................................................24Data Session Generator........................................................................................................25Simultaneous Multiple Data Session Option..........................................................................26Internet Data Displays...........................................................................................................26Serving Cell Specific Screens................................................................................................27

DL / UL Data Transfer.......................................................................................................27FTP Displays ........................................................................................................................28EDGE Capabilities ................................................................................................................28HSDPA Capabilities..............................................................................................................30

XQi Voice Quality Analysis........................................................................................................31XQi System Highlights...........................................................................................................31

Rush Street Mobile....................................................................................................................32Simultaneous Real Time Plotting...........................................................................................32

Plot Preview Analysis............................................................................................................33Seek Playback – Synchronized Analysis...............................................................................36

Xi Report Generator ..................................................................................................................37USB Interface Configuration......................................................................................................38Xi Configuration Utilities ............................................................................................................39

Heads Up Display – HUD View .............................................................................................39Automatic Dial / Terminate and SMS.....................................................................................40Dynamic Event Generator: Audible Alarms – Wave Files.......................................................41Start Test - Append Data Collection ......................................................................................42In-Building and Campus Navigation Software........................................................................42Configure Tool Bar................................................................................................................42Technology Menu Filter.........................................................................................................43Cell Site Database Conversion and Display...........................................................................43

Data Merging and Data Reduction.........................................................................................44GSM/WCDMA Specifications ....................................................................................................45





X-TEL Company Background

As a leading provider of engineering test systems and services for the wireless industry, X-TELCommunications, Inc., has built our reputation on an unsurpassable product line andincomparable customer service. X-TEL's products and services are used by some of the biggestplayers in the wireless communications industry. X-TEL provides equipment to the topGSM/UMTS operators in the United States, Europe, Asia and in operators and regional carriersaround the world.

Since the company's inception in 1994, X-TEL has exhibited a unique ability to anticipate futurecustomer needs, respond rapidly to special requests for customized products, and provide world-class product support. Our history is one of innovative firsts: X-TEL's drive test tools were the firstto integrate a real-time mapping interface; the first to build a portable, fully expandable, modularplatform for both in-building and vehicular data collection; and the first to support a variety ofwireless test mobiles so operators can optimize using more than one piece of subscriberequipment. X-TEL achieved yet another major technical milestone with the completion of ouroverlay GSM/EDGE/WCDMA simultaneous data collection and analysis configuration. Designedto support all major digital phone standards, our technology offers more scanning devices, morephone technologies, and more data collection bandwidth than any other drive test tool in the

industry. X-TEL’s flexible platform provides the ability to add ITU PESQ MOS scoring and remotecontrol of drive test units using the most advance autonomous system on the market – XiAutonomous. X-TEL supports GSM/GPRS/EDGE and UMTS and HSDPA tools positioning X-TEL's products for third generation (3G) wireless technologies and beyond.

X-TEL's success is due to the ingenuity and dedication of our people. With our headquartersstrategically located along Illinois' high-tech corridor, just 30 miles west of Chicago, we employ adiverse workforce with a high percentage of engineers devoted to developing some of the bestinnovations the drive test industry has seen. Our corporate culture fosters a positive workenvironment based on mutual respect, hard work, creativity, integrity, and, above all, a relentlesscommitment to customers.

In 2001 we established our sales, support and software development facility in San Jose, CostaRica. Since that time, we have set up strategic relationships with key distributors worldwide. For adistributor in your area, please go to our Contact Us page





IntroductionWireless networks continue to grow rapidly as wireless communication becomes a normal part ofeveryday life. New technology introductions, zoning limitations and new data applications are justa few of the challenges engineers have to address to keep the network optimized. It is critical forperformance engineers to identify and resolve network problems quickly to limit the impact on end

users and ultimately the company’s bottom line.

X-TEL’s GSM/WCDMA systems provide real-time problem identification and post collectionanalysis utilities to assist engineers in troubleshooting and fixing network issues. X-TEL tools aredesigned to alert the engineer immediately when a problem occurs and then to provide thecapability to quickly identify the underlying cause. Most problems can be identified and correctedwhile the engineer is still in the field. This reduces the impact for wireless customers andimproves overall business for the operator.

Host Controller UnitsThe HCU-2 unit was designed to support new test devicesthat include a USB interface, such as the Nokia andQualcomm 850/900/1800/1900 GSM/WCDMA/HSDPA

test mobiles. The HCU-2 will support six USB devices,eight serial devices and provide power for all 14.

X-2 GSM BSIC and WCDMA ScannersThe X-2 GSM BSIC and WCDMA Scanners are DSP-based software radios that provides unparalleled precisionand user-defined options for the measurement of GSMand WCDMA networks. The X-2 Scanner is available in850/900/1800/1900 GSM band configurations and in IMT-2000 and PCS WCDMA bands. Our tri-band dual technology receiver supports GSM 900/1800 MHz and WCDMA 2100 MHz in onereceiver. GSM applications include tower site surveys to calibrate network planning tools, makeRF coverage measurements, validate neighbor lists and monitor C/I and C/A interference.

WCDMA applications include these and additional pilot pollution interference measurements.

Real-Time DisplayThe real-time display shows a host of network performance and engineering criteria alongside amoving map depicting vehicle position, base station proximity, and user configurable displayoptions of RxLev, RxQual, Hopping, AMR and more. Various voice and data scenarios may bepreprogrammed to minimize user involvement while testing. Audible alarms utilizing Windowsstandard wave files alert users when network problems are detected. Heads-Up-Display viewsprovide key user defined real time data.

X-PEDite Tech Data AnalysisXi with Rush Street imports X-PEDite XPF files with complete playback andpost processing capabilities. Xi includes an in-building profile builder that

can be used with X-PEDite to define data collection segments for real timecollection. This data can then be imported and matched to the floor plan inXi. Use plot previews, synchronized playback and automated reportgenerator with X-PEDite data.





XQi Voice Quality AnalysisXQi provides performance engineers with a cost effective voice quality analysis tool that deliversease of use with in-depth analysis and performance. XQi’s modularity allows existing X-TEL datacollection systems to easily upgrade to include voice quality measurements. Utilizing the ITUspeech quality standard, P.862, XQi’s voice quality scoring is based on perceptual modeling ofhuman hearing; the PESQ algorithm. With XQi, voice quality can be plotted and analyzed along

other system metrics to assist in the identification and elimination of trouble spots in the network.

Rush Street Mobile AnalysisRush Street is a set of collection and analysis features that can be run with X-TEL’s current datacollection software. Using Rush Street, engineers have access to many analysis features thatare typically only found in post processing tools. Key features include the ability to show multipledata traces in real time and a powerful plot preview tool with querying and synchronizedplayback. X-TEL’s GSM/WCDMA /HSDPA system is fully Rush Street compatible.





Standard Features

• Real-time / Playback display of GSM/WCDMA/HSDPA parameters• Simultaneous data collection across multiple technologies• Data Session Generator to test FTP, Video Streaming, Web browsing, Email, Ping and

Trace

• User configurable real-time / playback map and window displayso Vehicle positiono Streets, BTS and Node B locationso Serving and neighbor sector identificationo Handoverso FTP and Application Throughputo Coding Scheme Histogramo GSM and WCDMA AMR Speech Codeco L2/L3 Messaging with search and filtering featureso LLC, RLC/MAC Messaging

• Supports Nokia 6190, Nokia 6200, Nokia 6220, Nokia 6230, Nokia 6125, Nokia N SeriesN75/N80/N92/N95, Nokia 7600, Nokia 6630/6680, Motorola T280, Motorola T720,SAGEM OT169 and SAGEM OT199 Test Mobiles. Also supports LG CU320/CU500,

Samsung SGH-ZX10/ZX20/i607• Supports Sierra Wireless, Novatel cards

and Qualcomm chipset based handsets

• AMR and FER measurements wheninterfaced to a Motorola T720, Nokia6200, Nokia 6220, Nokia 6230, Nokia6630 or Nokia 6680 test mobiles

• Supports GSM BSIC Scanner for 850MHz, 900 MHz, 1800 MHz and 1900 MHz.Dual band models available.

• Supports WCDMA Scanner for 1900 MHzand 2100 MHz. Dual band modelsavailable.

•

Supports tri-band dual mode 900/1800MHz GSM with 2100 MHz WCDMA

• TripNav 12 satellite USB GPS

• Cell site database conversion and display• Customizable screen and window

configurations with Audible Alerts

• User defined dynamic graphing

• Automatic dial / terminate with userdefined timer settings and auto redial

• Automatic data session generator• Automated post processing

• Report generator with predefined KPIvoice and data reports

• Data merging / reduction based on timeand distance

• Up to 26 I/O port expansion chassissupport

• Heads up display feature• In-building / Campus navigation software





Example Nokia Parameters

GSM GPRS WCDMA

Serving Cell Parameters- Tx Level

- Rx Level Full- Rx Level Sub- Rx Quality Full- Rx Quality Sub- FER Full- FER Sub- FER Real- C1- C2- C/I- DSF value- RLT Counter- Timing Advance

Neighbor Cell Parameters- BSIC- BCCH- Rx Level- C1- C2

GMM Parameters- Network Mode

- Attach Status- Ready Timer Status- RAI- P-TMSI value

SM/SNDCP Parameters- Received NPDU

counter- Sent NPDU counter- Missing DL NPDU

counter- Re-transmitted UL

NPDU counter

PDP Context- NSAPI- SAPI- Reliability Class- Precedence Class- Delay Class- Peak/mean

Throughput- Radio Priority

LLC Parameters- SAPI Identity- Received LLC PDU

- Sent LLC PDU- Missing downlink LLC

PDU- Re-transmitted uplink

LLC PDU

RLC Parameters- RLC UL Mode- RLC DL Mode- UL and DL Channel

coding schemes- UL and DL Timeslot- Received RLC data

block counter- Sent RLC data blockcounter

- Missing downlink datablock counter

- Re-transmitted uplinkdata block counter

WCDMA Parameters- MCC, MNC, URA, LAC,

RAC, Cell ID, RRC State- UARFCN- Primary and Secondary

Scrambling Code- Primary CPICH Ec/I0- Primary CPICH RSCP- UTRA carrier RSSI- Actual and Target SIR- Power Control- Initial transmission power- Preamble step size and

transmission count- Tx power used in RACH

message

- UE transmitted power- Ack PRACH/PCPCH

preambles

Inter-frequency neighbor cells: (8neighbors, 1 frequency)

- UTRA Carrier- Primary scrambling code- Primary CPICH Ec/I0- Primary CPICH RSCP- UTRA carrier RSSI- URA, LCA, RAC

Inter-system neighbor cells: (4neighbors GSM)

- BSIC- GSM Carrier number- C1, C2- Rx Level

Traffic Volume Parameters- Transport channel type- Transport channel ID- RLC buffer payload- Average RLC payload- Variance of the RLC

payload

Quality Parameters- Transport channel BLER- DL CRC error statistics- Raw BER





Key BenefitsModularityThe X-TEL GSM/WCDMA system supports a wide range of phone technologies. These includesupport for test mobiles across TDMA, GSM, GPRS, EDGE, CDMA, 1XRTT, WCDMA/HSDPAand iDEN technologies. X-TEL also supports industry grade dedicated scanners for TDMA, GSMand WCDMA. Its sophisticated internal bus architecture supports up to 26 ports for systemexpansion. An easy to use plug and play platform allows engineers to change phone andscanner configurations based on their technology requirements. The cost of upgrading andexpanding the HCU platform is very economical when compared with other test systems in theindustry.

Real-Time DisplayThe X-TEL GSM/WCDMA system is easy to operate and offers the flexibility of choosingparameters that are of interest to engineers to display on the map in real-time. With just the clickof a button, the real-time map can be configured to display different phone and cell site attributes,allowing engineers to make critical decisions faster. Street networks from any MapInfocompatible source can be loaded and displayed to further assist engineers with troubleshootingproblem areas. Along with the real-time map display, user configurable graphs, charts and textdisplays of GSM and WCDMA parameters are tailored to assure easy understanding.

Playback ModeEngineers can use the X-TEL GSM/WCDMA system to playback test data collected in the field.Maps, graphs, charts and other displays viewed during playback function the same as in real-time. The speed of the playback is adjustable, offering engineers more control in post datacollection analysis. Other controls allow the user to jump forward and backward to specific datapoints within the playback file. Audible alerts are active during playback, just like in real-time.Rush Street Mobile provides additional playback features such as synchronizing all displaywindows to play back data based on user defined criteria like low signal strength, pilot pollution ordropped calls.

Rush Street MobileEngineers can now analyze data in the field without the need to return to a central postprocessing location. Rush Street adds several advanced real time features such as plottingmultiple devices during data collection. For example, engineers can view and plot both theirGSM and WCDMA test phones during data collection. For GSM only networks, the engineerscan plot multiple metrics such as RxLev and RxQual during the drive test. Engineers can alsodefine Boolean expressions to search for specific events such as dropped calls, poor signalstrength and others. Rush Street Mobile then presents a plot of only those points that match thecriteria. Once plotted, the engineer can click on any point to replay the drive from that location.All open windows synchronize to the selected location to assist in troubleshooting. Rush StreetMobile increases productivity of engineers because decisions can be made in the field.

Post ProcessingFast, reliable post processing of data integrated into MapInfo is yet another reason why theX-TEL GSM/WCDMA system is so popular with users today. Drive test map generation can beperformed in the field or at the office. It is fully automated with customizable map attributes andlayouts. Hundreds of maps can be generated quickly with little effort or training. Advancedanalysis tools include dB Adjust to dynamically change signal strength of one or more channelsand then see the effects on best server maps. This tool is ideal for performing “what if” scenariosfor new sites with test transmitter data.





X-2 GSM Scanner with BSIC DecodingThe X-2 GSM BSIC Scanner is a DSP-based software radio that provides unparalleled precisionand user-defined options for the measurement of GSM signals across 850 MHz, 900 MHz, 1800MHz and 1900 MHz networks.

X-2 WCDMA Scanner

The X-2 WCDMA Scanner provides SCH, CPICH and PCCPCH scans to measure Eps/I0 andEss/I0 for the synchronization channel, Ec/I0 for the pilots in the CPICH and Epc/I0 for thespecified scrambling codes in the Primary Common Control Physical Channel.

Portability and In-Building CollectionThe GSM/WCDMA system combines in-building data collection with vehicle data collectionsystem. The user can import floor plans using a variety of file formats such as TIFF, DXF, JPEGand others. For in-building collection, simply pick a starting point and an ending point on the floorplan and data is mapped in the same manner as drive test data. For the first time ever, full drivetest functionality and in-building data collection is integrated into one test tool, without sacrificingfeatures and functionality.





Real-Time / Playback Data Display

The GSM/WCDMA Real-Time / Playback map display accurately depicts vehicle position, celllocations and local streets. The vehicle path can be configured to display critical GSM/WCDMAparameters such as RSSI/RxLev or FER. Or display WCDMA parameters such as the primaryand secondary scrambling codes, primary CPICH Ec/I0 and UTRA carrier RSSI. The color of thepath drawn is also user configurable, providing another convenient way for these parameters tobe viewed. Rush Street adds to these capabilities by allowing the engineer to view multiplephones and parameters simultaneously.

Events such as handovers, call origination, calltermination and dropped calls will be displayed alongthe path drawn using user defined colored symbols.The blue arrows in the window above indicate locationswhere a handover occurred.

Neighbor lines are drawn from the vehicle position toserving cell sectors, easily identifying the currentserving sector(s). Cyan and yellow lines will be drawnto the strongest and second strongest neighbor,respectively. Anytime a neighbor is stronger than theserving sector, the lines and bar graph in the MAHOStatus Screen become red.





Engineers can use the X-TELGSM/WCDMA Xi software to playback testdata collected in the field. The map,graphs, charts and other displays viewedduring playback function the same as in

real-time. In addition, the speed of theplayback is adjustable, which offersengineers more control in post datacollection analysis. Engineers can also use

the right and left arrow keys on the computer keyboard to step back in 2-second increments or tostep forward data point by data point. By changing the location marker, engineers can scrolleither forward or backward within the data file to look at all information collected during the drivetest.

Phone Status Display The X-TEL GSM Real-Time Display is one of the most flexible software applications everdeveloped for data collection, display and analysis. Displays include bar graphs, moving mapswith data attributes, charts and other color-coded displays for viewing of system specific

parameters. Unique user profiles allow display windows to be configured according to individualpreferences. Windows can be sized and customized creating a virtual drive test dashboard ofdetailed attributes relating to real-time system performance.

WCDMA Intra Status Screen The X-TEL WCDMAIntra Status screenincludes Phone TaskDescription, ChannelMode Status, UARFCN,Primary Scrambling

Code, UTRA RSSI,Target SIR, TX Powerand other keyparameters.





GSM Neighbor Status Display

The Neighbor Status Display depicts the following information for GSM phones:

• Green bar is the current channel• Cyan bar is the strongest Neighbor/Reselection channel

• Yellow bar is the second strongest Neighbor/Reselection channel• Grey bars are other neighbor channels• Color coding matches the Map display when “Show Neighbor Lines” is enabled

• “Sort” checked displays channels in descending order of signal strength in –dBm.Otherwise, channels are displayed per the neighbor list.

• When a Neighbor/Reselection channel is stronger than the current channel, the bar(s)representing the Neighbor/Reselection channel(s) will turn red while stronger.

• Cell/Sector are determined from the current cell site database

WCDMA Neighbor Status Display

WCDMA Neighbor StatusDisplay includes:

• Primary ScramblingCode

• Primary CPICH Ec/Io

• Primary CPICH RSCP• UTRA RSSI

This information can bedisplayed for Home, InterFrequency 1 or InterFrequency 2 neighborlists.





WCDMA Pilot Pollution Analysis X-TEL includes five classes of pilot pollution; four based on information from the mobile and onebased on independent scanner measurements. The five pilot pollution classes are presentedbelow.

Pilot Pollution Type 1 The first type of pilot pollution (PP1) isdefined when a SC Ec/Io is less than agiven threshold and the RSCP is morethan a defined threshold. These are userdefined with defaults set as Ec/Io lessthen -10 dB while RSCP is more than -85dB.

Descriptions and examples of pilot pollutions types 2, 3 and 4 follow.

Pilot Pollution Types 2 and 3

The pilot pollution type 2 (PP2) abovewas triggered because RSCP was morethan -85 dB for more than 2 of theScrambling Codes. The RSCP andquantity thresholds are user definable forPP2.





The pilot pollution type 3 (PP3) abovewas triggered because the Ec/Iodifference between the first SC of theActive Set was within 5 dB of the third SCof the Active Set. The threshold is userselectable for PP3.

Pilot Pollution Type 4

The pilot pollution type 4 (PP4) abovewas triggered because the Ec/Iodifference between the first SC of theMonitored Set was within 5 dB of the firstSC of the Active Set. The threshold isuser selectable for PP4.





Pilot Pollution Type 5

Pilot Pollution Type 5 is defined as theEc/Io difference between the 5th and 6th

strongest SC being a user defineddifference (8 dB by default).





GSM and WCDMA Missing Neighbor Analysis X-TEL supports missing neighbor analysis for both GSM and WCDMA network testing.Information from the scanner is compared in real time to neighbor information reported by the testmobile. Missing neighbors are user defined based on signal level and proximity.

Missing Neighbor Example

Missing Neighbor: In this area, the phone is not reporting SC 347 as a neighbor, but the WCDMA

scanner reports that SC 347 is within the search proximity and greater than the minimum leveldefined for a neighbor. There is only one active set SC so SC 347 is a potential missing neighbor.





Layer 3 Message Display Layer 3 information is logged and presented in real-time and during playback for both GSM andWCDMA networks. Simply select the message of interest and double click to decode themessage. Examples of both GSM and WCDMA messages are below.

The L3 Filter and Search utilitiesallow users to select the specific L3messages they wish to displayduring data collection and those theywish to find after data collections,respectively. This powerful featureallows the user to concentrate onlyon specific messages of interest,failed hard handovers, for example.





Advanced Protocol Analyzer (APA) Xi APA collects more than 500 internet protocol metrics based on the Ethereal protocol analysisengine. APA enables engineers to test core data network parameters and thus tests wirelessnetworks end-to-end.





GSM-WCDMA Handover Analysis Xi supports simultaneous analysis of WCDMA and GSM data. The displays below include bothWCDMA and GSM displays open with L3 message decoding. This particular example captures aWCDMA to GSM handover.

GSM Phone Quality Monitor The GSM Phone Quality Monitor depicts the following information for GSM phones:

•

RxLev with Strongest andSecond Strongest Neighborline graphs

• RxQual Bar Graph with C/ALine Graph

• TA Bar Graph with TxPwrLine Graph

The background of the graphsindicates the state of the mobile.The background is black when thephone is idle. The background is

blue when the phone is inconversation mode.

Engineers can freeze and select arange of data on the graphs byholding down the left mouse buttonand dragging across the graph.Using the right mouse button, theuser can also zoom into a specificarea.





GSM/WCDMA Dynamic Graphs X-TEL’s Xi Dynamic Graphs allows users to select the parameters of interest for graphing. Theengineer can create multiple graphs comparing key metrics. The example graphs below includehandover state versus RSSI and…

Intra neighbors versus BER with call start and call end events overlaid as vertical green and bluebars.

Using a tree structure, the engineer simply selects the device and the desired metrics to plot.





AMR Codec Displays

AMR Codec Table

The Adaptive Multi-Rate Codecdisplays include a table of thelast ten frame periods thatincludes:

• Frame type (within AFS,AHS, RATSCCH orRATSCCH_DATA,RATSCCH_MARKER,FACCH, orSID_UPDATE frame)

• Decode status• C/I used for link

adaptation (in 0.5 dBunits)

• CMI_DL (of the frame ifpresent, or used todecode the frame)

• CMC (of the frame ifpresent, or previous one)

• CMI_UL (used to encode the frame N+2)• CMR (calculated on the frame period N and previous

ones - to be included in frame N+2 or N+3)

• AFN of the last burst of the last frame (for reference)

The window to the left with the time reference and frame typeincludes a scroll bar. Users may pause the display and scrollback in time to see the sequence of commands and actualcodecs in use.

AMR Codec UL and DL Distribution

The AMR Codec Distribution display shows the distribution of thelast rolling 100 codec modes reported in each frame. The ACScodecs are highlighted for both uplink and downlink.

User defined parameters for this display include:

• Color and ranges of the codec distribution. Use default

colors Red (0 – 25), Yellow (25 – 50), Green (50 – 100).Note: the range is NOT a percentage value.

• Color of the font, and background of the cells for bothactive/inactive. Use default background colors Blue(Active), Dark Grey (Inactive), and default font colorsWhite (Active), Light Grey (Inactive).

• Show/Hide grid lines, and Grid line color





GSM/WCDMA System Information The GSM/WCDMA System Information screen depicts the following information for GSM andWCDMA phones:

• Multi Frames Paging Group• Block Index Paging Group• Access Grant Reserved

Blocks

• Multi Frames Between Paging• Paging Repeat Period• Emergency Calls OK – Yes/No

• ½ Rate OK – Yes/No• Sys Info 7 8 Sent• Cell Rebroadcast OK –

Yes/No

• Reestablishment OK – Yes/No• CCH Paging Group

• LAC – Location Area Code•

MNC – Mobile Network Code• MCC – Mobile Country Code

• URA – UTRAN Registration Area• RAC – Routing Area Code• RRC State

GSM Scanning Displays The X-TEL BSIC Scanner provides scanning speeds of 300 channels per second (typical) withBSIC decoding for GSM 850, GSM 900, GSM 1800 and GSM 1900 bands. Dual band 850/1900and 900/1800 scanners are available.

The BSIC Scanner Chart displays the following information for GSM networks: Channelsscanned, RSSI values in dB, Color coded bar graph, BSIC for each channel when decoded andChannels can be sorted by signal strength or limited to top 10.

Signal strength measurements are color coded per user defined thresholds and users have theoption to sort the channels by signal strength.





WCDMA Scanning Displays X-TEL’s UMTS WCDMA scanning receiver is a DSP-based software radio that provides user

defined options for the measurement of UMTS WCDMA networks .

Operational modes include:

• RSSI Scan: Measures and reports RSSI for a given channel list• SIR Measurements: Measures CPICH Signal to Interference Ratio (SIR).• Rake Finger Count: Detects up to 25 multipath components of received signal.

• Timeslot (SCH) Scans: Measures and reports Eps/Io (PSCH_Ec/Io) of the

synchronization channel (SCH) at uniform instances of time during one timeslot (2560chips).

• Pilot (CPICH) Scan: Measures and reports Ec/Io for specified pilots in the CPICH. Anexample displays is shown above





Data Session Generator X-TEL’s data session generator enables engineers to define data session scripts andautomatically run them to exercise the data network. Data session scripts can include:

• FTP Download• FTP Upload• FTP Download/Upload

• Ping

• Trace• Web Browsing• Email Sending

• Email Receiving• Video Streaming

Advanced Options include specific parametersfor setting up the FTP and Ping utilities.





Simultaneous Multiple Data Session Option With this option, Xi users have the option to assign up to four mobiles to the Data SessionGenerator. Each data session is run simultaneously allowing direct comparisons of datathroughputs and low lever performance metrics. Compare Circuit Switch, GPRS, EDGE andUMTS data transfers at the same time on one PC.

This optional featureworks well with X-TEL’s Third PartyInterface, which allowsusers to attach anydevice, mobile or datacard that can beconfigured as amodem in Windows.

Internet Data Displays

The Internet Data Status display showsthe progression of tests as defined in thedata session script.

The Connection Speed section of thedisplay shows the downlink and uplinkactual, average, highest and lowesttransfer rates during the data sessionscript.

As FTP sessions are run, the FTP Speedsection of the Internet Data Status displayshows the actual, average, highest andlowest FTP transfer rates for the downlinkand uplink paths.





Serving Cell Specific Screens The GPRS Serving Cell Info screen displays GPRS specific parameters in tabular format. Thedownlink and uplink parameters are placed side by side for easy viewing. Parameters displayedinclude the actual time slots in use for GPRS, the coding scheme in use for the uplink anddownlink, RLC/LLC throughput and retransmission metrics.

DL / UL Data TransferThe downlink and uplink GPRS data transfer screens display GPRS specific parameters ingraphical format. The graphs depict the uplink and downlink RLC/LLC throughputs, RLC/LLCretransmissions, block error rate, allocated bandwidth and actual bandwidth used.





FTP Displays Data specific displays forFTP transfer include Uplinkand Downlink SpeedCharts, Uplink and DownlinkAverage Throughput Charts

and a Speed MeasurementsTable.

EDGE Capabilities EDGE applies a new air interface modulation technique (8PSK) to increase the bit rate in the airinterface three times over conventional GMSK. The rate perceived by the user depends oncoding schemes created to protect the data against corruption. In GPRS, four different codingschemes are available, whereas EDGE offers nine modulation and coding schemes (MCS).These MCSs result in data rates of 8.8 to 59.2 kbits/s per timeslot. X-TEL will monitor and reportthroughput and MCSs in use via the Serving Cell Display presented above.

X-TEL’s GSM system will display and collect the following metrics:

• Uplink/Downlink Application Throughput• Mean_BEP, CV_BEP• IP Address

• RLC Uplink Throughput• RLC Uplink Retransmissions• RLC Downlink Throughput

• RLC Downlink Retransmissions





• RLC/MAC Messages• LLC Uplink Throughput

• LLC Uplink Retransmissions• LLC Downlink Throughput• LLC Downlink Retransmissions

• LLC Messages

• Serving cell information to include MCC, MNC, LAC, Cell ID• Modulation and coding schemes, MCS 1-9

The EDGE System Access Monitor(SAM) display includes key metricsduring the data transfer session,including RSSI, MCS use andthroughput for uplink and downlink.

The Modulation CodingScheme histogram displayshows the distribution ofdownlink and uplinkassigned MCSs.





XQi Voice Quality AnalysisX-TEL’s XQi system provides voice quality analysis functionality that integrates with X-TEL’scurrent data collection software. Utilizing the ITU voice quality standard, P.862, XQi providesobjective evaluation of speech audio signals based on human hearing perception models. Keyfeatures of XQi include the standardized ITU P.862 PESQ (Perceptual Evaluation of SpeechQuality) voice quality scoring, and multiple phone connections, PSTN-to-mobile, mobile-to-PSTNand mobile-to-mobile testing. Voice quality data can be viewed and plotted in real-time, as well asanalyzed in post-processing. X-TEL’s XQi system is compatible across all supportedtechnologies.

XQi System Highlights • Voice quality scoring based on International Telecommunications Union P.862 standard:

PESQ

• Monitor, record, and plot voice quality scoring and metrics in conjunction with all phone

data and events for in-depth evaluation of system performance• Available as an upgrade to existing X-TEL data collection systems

• Multiple phone connection support• Multiple technology support for benchmarking applications

• Works with X-TEL supported test mobiles• Real-time plotting of voice quality scoring via X-TEL’s Rush Street• View collected voice quality data in Playback Mode, displaying all data and any views the

same as in real-time

• Straightforward interface displaying key voice quality performance indicators:





o PESQ Scoreo Average FER_SUBo Average Worst CTOAo Speech codec (AMR)o MOS scoreo G.107 Ratingo Reference speech signal levelo Degraded speech signal levelo Attenuation between reference and degraded signalso Front End Clipping (FEC)o Hold Over Time (HOT)o Speech signal delay

• Spectrogram display of the speech audio signal

• Record the degraded speech quality audio files

Rush Street MobileX-TEL’s Rush Street Mobile is an advanced software analysis program that includes powerfultools for real time analysis of network performance. This optional program enhances theGSM/WCDMA Xi software by adding several advanced features such as simultaneous plotting of

multiple devices, field plot analysis and synchronized playback from user defined trouble points.

Simultaneous Real Time Plotting

Simply choose the phones and scanner that you wish to display in real time. In this example theuser chose to display two Nokia GSM/WCDMA phones with handover state as a trailer.

Legends for all selectedphones and scanners areavailable for real timeplotting and post

processing analysis.

The “snapshot” utilityallows the engineer tocapture an image of theRush Street window or theentire laptop display.When executed, a JPEGfile is created and savedto the snapshots directory.Engineers can then insertthe snapshots into emailsor reports for distribution.





Plot Preview Analysis Engineers use the Plot Preview Browser to select data files and user defined plot templates todisplay multiple parameters over the drive test route.

Once the template is selected and executed, Rush Street displays the parameter on the map.The display below shows both RSSI and RxQual Sub for the entire drive route. By default eachselected parameter is plotted at the collected latitude and longitude point.

The Offset utility was used below to move the RxQual plot to the left for easier viewing.X-TEL provides a complete catalog of plot preview templates for each technology.

Engineers also have the ability to customize each template or create templates of their own usingthe edit template utility.





The Edit utility opens existing templates and enables the user to customize each templateor create their own. Once the editor is open the user has access to every column of data

in the collected file and can define filters for each column.

Below, the events have been added to the previous plots of RSSI and RxQual Sub.





Data Binning Xi supports data binning within the Plot Preview utility in Rush Street. Simply select the data fileand DataBin Plot Template to generate binned data maps. The feature calculates the average ofthe selected metric in each bin and displays these bins in user defined color ranges.





Seek Playback – Synchronized Analysis The Seek Playback feature will synchronize all open analysis windows to the specific pointchosen with Seek Playback. Once the event is selected, all windows synchronize and the datafile begins playback 2 seconds prior to the selected event. Playback will begin at normal speed toallow the engineer to troubleshoot specific events like multiple handoffs, dropped calls or failedhandovers. Using the right and left arrow keys on the keyboard the engineer can step forwarddata point by data point or backwards in 2-second intervals, respectively.

Seek Playback is a powerful analysis tool that allows detailed playback of specific events at auser controlled speed.

One important aspect of Rush Street is the ability to perform detailed analysis in the field. There

is no need to return to a central location for traditional post processing that can often becumbersome and inefficient. Engineering productivity increases rapidly when using Rush Streetto diagnose and correct issues in near real time.





Xi Report GeneratorXi includes an automated Key Performance Indicator (KPI) report generator. Users choose alocal file or a file stored on the FTP server that was stored from autonomous data collection. Adevice or test slot is selected with the appropriate KPI reports from the selected technology type.

The report generator creates a Microsoft Excel workbook with a worksheet assigned to each KPIreport.

Batch processing is also available to create reports for benchmarking across multiple datacollection devices.





USB Interface ConfigurationX-TEL’s Xi Mobile software is expandable to support up to 16 USB devices, including phones andscanners, for simultaneous collection across technologies and markets.





Xi Configuration UtilitiesX-TEL’s GSM Xi data collection and analysis software includes many useful utilities to assist theengineer in locating and correcting network anomalies.

Display Tabs The Display Tabs feature allows the users to toggle between different sets of display windows byclicking on a tab-strip loaded at the bottom of the main Xi screen. The users can share profileswith other users without affecting the hardware configurations, color ranges, and other softwaresettings.

Six unique display layouts can be accessed. The first tab will always be the Xi.ini, and onceselected, it will load the display windows saved in this file. The configuration for a set of displaywindows is saved as an “.ini” file.

Heads Up Display – HUD View The HUD view feature is designed to make it easier to view critical data during real-time datalogging and collection. The engineer first chooses the desired display windows to use with HUDview, and then enables HUDview.

Once enabled, a button iscreated at the bottom of theHUD View display for each ofthe selected display types. Theexample to the right shows theRush Street display full screen.

To change the display, theengineer pushes one of the userdefined display buttons alongthe bottom.





This feature becomes even more powerful when a tablet PC is used with a touch screen. Theengineer can then change the display by simply touching the buttons.

Automatic Dial / Terminate and SMS The automated dialing function provides the ability to make multiple calls automatically. This

feature eliminates the need to dial manually during the drive test.

Configure test mobiles to automatically send SMS messages via the Dialer utility.





Dynamic Event Generator: Audible Alarms – Wave Files Xi supports advanced triggers based on phone and layer 3 activities to generate events andaudible alerts. These events can trigger playing wave file alerts or specific actions like start call,start data session, etc. An example set-up screen is shown below. Audible alerts will soundbased on user defined event changes during data monitoring, collection and play back. Theseaudible alerts can be composed by the user or may be any standard audio WAVE file. Each slot

has its own audible event configuration screen. Therefore, different WAVE files may be used fordifferent phones.

WAVE files provide an audible alert whenever a user defined parameter threshold is exceeded orthe selected event (handover, dropped call, end call, etc.) is completed.

Triggers based on Phone Events

Triggers based on L3 Events





Start Test - Append Data Collection X-TEL’s Xi software includes the option of appending data collection files in real time. Thefeature provides many benefits for the user, including the ability to start and stop tests forconvenience without having to then merge multiple files into one output file for processing.Simply choose an existing file from the list and select the appropriate start button (with GPS orIndoors).

In-Building and Campus Navigation Software Not only is the X-TEL Xi software one of thebest drive test tools available forengineering networks, it is also the mostfeature rich in-building collection systemcurrently available in the industry. All thesame drive test measurements areperformed just as easily in the in-buildingenvironment. Floor plans are easilyimported using a variety of import filters,such as TIFF, DXF, JPEG and many others.To perform in-building collection, simply picka starting point and an ending point on thefloor plan and data is mapped in the samemanner as drive test data.

Configure Tool Bar

The X-TEL Xi software includes a usefultoolbar that includes the most often usedcommands such as enable hardware, starttest, etc. The engineer can use the ConfigureTool Bar option to select any menu item for thetool bar. Multiple tool bars can be defined pertechnology, saved and then loaded with a testprofile.





Technology Menu Filter X-TEL’s Xi software supports all wireless mobiletechnologies including AMPS, TDMA, GSM, CDMA,WCDMA and iDEN. However, engineers may wish to filterout the technologies not in use in the market to reduce the

number of menu items within the software. The TechnologyMenu Filter allows the engineer to select the technologies ofinterest and then all applicable menus within the Xi softwarewill only show features applicable to those technologies.

Cell Site Database Conversion and Display Recognizing that the frequency plan of a wireless mobile system is an ever-evolving project, theGSM/WCDMA HCU includes automatic cell site database import filters. X-TEL supports the mostpopular propagation tools including Wizard and Planet as well as many custom filters per needsof specific markets.

Once the cell site database is created,databases are selected and assigned to eachtest mobile within the GSM Xi software. Multipledatabases can be used for overlay testing, e.g.,for GSM and WCDMA.





Data Merging and Data Reduction

The X-TEL Xi software provides the capability to merge multiple data files into one whilesimultaneously reducing the data being written to a new output file. This feature provides manybenefits for the user, including the ability to create large-scale plots with little or no overlap of data

points. By reducing test data based on distance, attribute symbols are viewed more easily in mapform, allowing faster analysis of larger areas.




GSM/WCDMA Specifications

HCU-2 Physical Specifications

Dimensions: 8.36” x 9.11” x 3.63”Weight: 1.5 lbs

Computer I/O Interface: USBDevice Interface: 8 USB; 6 Serial

Power Distribution: 14 DC Ports

Electrical Specifications

Voltage: 10.5 to 18 VDCCurrent: 465 mA plus 350 mA per device

Operating Temperature: 0 – 47 C (at 13.8 VDC)

X-2 GSM Scanner with BSIC Decoding

Frequency Range: GSM 850, GSM 900, GSM 1800, GSM 1900,Dual GSM 900/1800 or Dual GSM 850/1900Bands

Scan Time: 300 Channels per Second (Typical)Dynamic Range: -110 to -30 dBm

Calibrated Accuracy: +/- 1 dBAdjacent Channel Rejection: > 50 dB

Antenna Impedance: 50 OhmsAntenna Input: TNC

X-2 Enclosure Dimensions: 8.36” x 9.11” x 3.63”

X-2 WCDMA Scanner

Frequency Range: IMT-2000 2110 MHz to 2170 MHz; PCS 1930MHz to 1990 MHz, Cellular 869 MHz to 894MHz

RSSI Measurement Rate: 500 Channels per Second (CW)250 Channels per Second (Wide)

RSSI Bandwidth: 200 kHz (CW)3.84 MHz (Wide)

Spectrum Analysis Dynamic Range: >90 dBRelative Accuracy: +/- 1.0 dB for Ec/Io >= -17 dB

+/- 1.0 dB for 17 dB>= SIR >= -17dB

Minimum detectable WCDMA Signal: -21.5 dB relative, -116 dBm absoluteCPICH Measurement Time: 60 ms (minimum)CPICH False Detections: < 0.1%

X-2 Enclosure Dimensions: 8.36” x 9.11” x 3.63”