Cisco Systems 2305-BTS2-R1 Base Station Transmitter User Manual Part 6 146 Custom

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Document ID	588306
Application ID	PpHHLWIKMHTknLd9hQ0M6A==
Document Description	Manual part 9
Short Term Confidential	No
Permanent Confidential	No
Supercede	No
Document Type	User Manual
Display Format	Adobe Acrobat PDF - pdf
Filesize	147.06kB (1838290 bits)
Date Submitted	2005-10-04 00:00:00
Date Available	2005-10-04 00:00:00
Creation Date	2005-02-04 16:38:37
Producing Software	Acrobat Distiller 6.0 (Windows)
Document Lastmod	2005-02-04 16:39:00
Document Title	Microsoft Word - Part 6 _146-_ Custom
Document Creator	Acrobat PDFMaker 6.0 for Word
Document Author:	Navini

Navini Networks, Inc.
Ripwave Base Station I&C Guide
Appendix O: Base Station Installation Certification
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Appendix S: Location (FTP) Tests
Introduction
The Location, or FTP, Test is performed to check the Ripwave system operation through file
transfers between the Base Station and the Modem. The test measures the data rate performance
at various locations within the coverage area. Data throughput is measured by executing file
transfers using the FTP protocol for both upstream and downstream links. A file server must be
in place on the same subnet with the BTS to accurately perform the file transfer, and the Modem.
User computer must be loaded with an FTP Client. As the file transfer is running, a data file is
captured by the Modem tool. Data rates are captured by the FTP program.
Data is recorded in a spreadsheet format. The spreadsheet lists the location, GPS, and other
information. As data rates are captured, the results are entered manually. An average SNR and
sync RSSI can be read from the debug tool, and recorded, for quick comparison to the acceptable
criteria (see “Acceptable Criteria” section of this appendix). For NLOS indoor locations, tests are
performed both outside the building and inside, so that the obstruction loss for the building can
be determined. Unless the customer can provide indoor access, all results will be LOS or Near
NLOS.
Planning the Locations
Before the actual testing is conducted, you need to select the test locations.
First, select one Line of Sight (LOS) location about 2 km away from the Base Station. The
results at this location will be as good as you could expect to get from your system and will
constitute your “base line” for future reference.
Second, based on your preliminary RF propagation, select 4 additional locations (LOS or
NLOS), if the Base Station has a panel RFS; or 7, if it has an omni RFS.
Criteria of Acceptability
In order to evaluate the test results, several criteria are taken into consideration. These criteria are
valid for both LOS and NLOS locations.
Processed Sync Signal Strength: For a given test location, ± 2 dB variation during FTP
Absolute Sync Signal Strength – Processed Sync Signal Strength: not greater than 2 dB
variation during FTP
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SNR values consistent during the FTP for all carriers used:
a. QPSK:
at least 11 dB
b. 8 PSK:
at least 14 dB
c. QAM16:
at least 17 dB
UL and DL Packet Error Rates (PER) not greater than 1%. This will vary according to
interference levels, but may not render the system inoperable.
Uplink Beam Forming Gain: between 16 dB and 21 dB. Perform a comparison of UL and
DL, Beam Forming Gain differences should be not greater than 3 dB.
Modem Transmit Power < 25 dBm; BTS Transmit Power < 0 dBm per code channel with
power control
Sync vs. Data Rate:
Absolute Sync (dBm)
(A) –35 to –55
(B) –55 to –70
(C) –70 to –85
(D) –85 to –95
(E) –95 to –105
UL Data Rate (Mbps)
0.6 to 1.0
0.6 to 1.0
0.5 to 1.0
0.10 to 0.5
0.033 to 0.1
DL Data Rate (Mbps)
1.5 to 2.0
1.2 to 2.0
1.2 to 2.0
0.3 to 1.0
0.066 to 0.66
Process
The recommended process for performing the Location (FTP) tests is described below.
First: Verify that a single Modem transmits and receives data at expected rates, as indicated
previously.
Second: Verify that multiple Modems simultaneously transmit and receive data at acceptable
rates, and the parameters listed above are being met. NOTE: The exact number of Modems is
determined by field conditions. The minimum is two.
Third: Verify operation at the full range of the system*. Include LOS Location Tests at cell
edges. The height of Modem and uplink and downlink data rates are recorded for each site. Data
rates are to be compared with expected results, as seen in the last item (Sync vs. Data Rate) of
Acceptance Criteria. For example:
*2.6 GHz :
*2.4 GHz:
~12 Km
~ 3 Km
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Equipment Required
•
•
•
•
•
•
•
•
Laptop computer
GPS receiver with serial cable
Constellation Debugger application
BTS Beam Form Display diagnostic tool
Modem
Modem power supply
DC to AC power converter
Ethernet Cable
Equipment Setup
To the
vehicle
cigarette
lighter
Place Modem in the roof of the
vehicle; position it to reduce the
difference between Absolute and
Processed Sync below 2 dB
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Location (FTP) Test Procedure
Two people are needed to perform this procedure. One will be in the car performing the location
test, and the other will be at the Base Station checking the operation using the BTS Beam Form
Display diagnostic tool.
1. Ensure that the Base Station has successfully completed calibration, RF sanity
measurements, and the Drive Study at the frequency and TX/RX signal levels that were
determined by the cell site survey. Also ensure that the Base Station is powered on and is
able to transmit and receive data.
2. Connect the DC to AC power converter to the power port in the vehicle.
3. Connect the Modem to the DC to AC power converter.
4. Connect the Ethernet cable to the Ethernet port on the laptop computer and to the
Ethernet port on the Modem.
5. Connect the GPS to the serial port on the laptop computer.
6. Drive to one of the locations selected on the RF coverage analysis. Stop and turn off the
vehicle.
7. Power on the GPS, the Modem, and the laptop computer. Place the Modem on the roof of
the vehicle.
8. Start the Navini Networks FTP/Location Test Tool program.
9. Verify that the Base Station is transmitting and that the Modem establishes sync and can
communicate with the Base Station. Ping a device address on the network side of the
Base Station, and verify that a reply is received. While monitoring the Constellation
Debugger, position the Modem to reduce the difference between absolute sync and
processed sync levels to 2 or less.
10. Enter a memo into the comment field about which link of the test is being performed.
11. Verify that the GPS input is seen in the application.
12. Put the location number/site identifier into the comment field of the Navini Networks
Constellation Debugger, and press the Enter key. This will identify the site location.
13. On the EMS connected to the Base Station, start the BTS Beam Form Display diagnostic
tool.
14. From the laptop computer with the Modem connected to it, start a downlink FTP file
transfer. Record the results on the site page or in the log.
15. On the EMS connected to the Base Station, using the BTS Beam Form Display
diagnostic tool verify the strength and direction of the beam during the file transfer.
Record the results on the site page or in the log.
16. Repeat the file transfer three times, stopping and starting the Debugger and Beam Form
Display diagnostic tool for each transfer
17. Repeat steps 14-15, this time performing an uplink FTP transfer.
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18. When finished, remove the Modem from the roof and secure equipment for travel.
19. Drive to the next location selected on the RF coverage analysis. Stop, and turn off the
vehicle.
20. Repeat steps 7 to 19 until all locations are tested. At this point send this data to the RF
Engineers to analyze, or continue until each quadrant in the cell is complete. When you
send the results depends upon the schedule or results from the file transfers.
Location (FTP) Test Form
The form for recording the Location (FTP) test results is an Excel spreadsheet. Shown in Table
T1, the actual column headers go across the top of the form, but are broken into two sections
here for readability.
Table T1: Location (FTP) Test Form
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Appendix V: IC Closeout Tool
Overview
This is a new complex form that replaces the following older forms:
1. RFS System Test Form
2. 2nd tab of the Base Station Installation Certification Form (Serial Numbers)
3. Calibration Verification Form
4. Drive Study Form
5. Location (FTP) Test Form
The I&C Closeout Tool (Part Number xx) consists of the following worksheets (tabs):
1. Company Info
2. BTS Info
3. Serial #
4. Layer 1 & 2
5. Cable Loss
6. Calibration Plot
7. RFS and Cable RFS Loss
8. RF Verification
9. Drive Test Form
10. Location Testing
Before Using the Form
Once a BTS has been added and fully configured in the EMS (including execution the RFS script
from the floppy delivered with the antenna, as well as successfully calibrated, you must perform
the “Export All BTS Data” action on this BTS. This creates a text-only file that will be used as
input for the I&C Closeout Tool.
Using the Form
Open the IC_Form and select the first tab (Company Info) and click on the “Read BTS Export
File (*.txt)” button. This action will read the configuration data contained in the BTS export file
and populate most of the fields in all the tabs of the I&C Closeout Tool. Complete tabs 1
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(Company Info), 2 (BTS Info), 3 (Serial #), and 5 (Cable Loss) by filling the green fields
manually. No data needs to be entered manually in tabs 4 (Layer 1 & 2) and 6 (Calibration Plot).
The remaining four tabs, 7 (RFS and Cable RFS Loss), 8 (RF Verification), 9 (Drive Test Form),
and 10 (Location Testing) will be filled as part of the corresponding procedures.
Click on the “Save Workbook” button on the Company Info worksheet (first tab) before saving
this Excel file. The purpose of this action is… (ASK PHIL ABOUT THIS AND ABOUT THE
CREATE AUDIT REPORT BUTTON).
Figure V1: Company Info (1st tab)
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Figure V2: BTS Info (2nd tab)
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Figure V3: Serial # (3rd tab)
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Figure V4: Layer 1 & 2 (4th tab)
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Figure V5: Cable Loss (5th tab)
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Figure V6a: Calibration Plot (6th tab) – Part One of Three
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Figure V6b: Calibration Plot (6th tab) – Part Two of Three
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Figure V6c: Calibration Plot (6th tab) – Part Three of Three
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Figure V7: RFS & Cable RFS Loss (7th tab)
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Figure V8: RF Verification (8th tab)
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Figure V9: Drive Test Form (9th tab)
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Figure V10a: Location Testing (10th tab) – Part One of Two
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Figure V10b: Location Testing (10th tab) – Part Two of Two
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