O2J-365TSCRT

IP-based Broadband Wireless Access (BWA) System

605-0000-836 Rev B draft

HiperMAX HiperMAXHiperMAX HiperMAX Technical User's Guide HiperMAX Physical Installation - Masthead Equipment





The Innovation Behind Broa dband Wireless Connecting the World

iii
Table Of Contents Physical
Installation

Masthead
Equipment........................................................................1 Warnings
and
Cautions...........................................................................................1 SAFETY .............................................................................................................1 WARNING

HAZARDOUS
VOLTAGES......................................................................1 European
Directive
1999/519/EC...........................................................................1 SCRT
365T
use
in
USA.........................................................................................2 SCRT.........................................................................................................................3 Introduction..........................................................................................................3 SCRT ................................................................................................................3 WiMAX
Antennas.................................................................................................3 GPS
Antenna......................................................................................................3 DC
Power
Feed
Lightning
Surge
Protection..............................................................3 Physical.............................................................................................................3 Interfaces..........................................................................................................4 SCRT
Installation ................................................................................................4 The
SCRT
installation
kits:....................................................................................6 Installation
Requirements
SCRT...............................................................................9 Tools
Required....................................................................................................9 SCRT
Installation
Parts
and
Kits ............................................................................9 SCRT
Installation
with
front
mounting
antenna

Pole
Mounted...................................12 Mounting
the
Antenna .......................................................................................12 SCRT
Installation
Pole
Mount

with
independent
Antenna...........................................17 Mounting
the
Antenna .......................................................................................17 SCRT
Installation
Plate
Mount................................................................................20 SCRT
Connections................................................................................................22 Mating
Torques.................................................................................................22 Power
Input

HiperMAXMicro ............................................................................22 Power
Input

HiperMAX.....................................................................................22 Optic
Interface .................................................................................................23 Antenna
RF
Port................................................................................................23 Protective
Earth
Connection................................................................................24 48V
DC
Cabling ...................................................................................................25 Cables
to
SCRTs
Connectorised
Both
Ends

–
For
Use
With
HiperMAXMicro ...............25 Cables
to
SCRTs

Connectorised
One
End

–
For
use
with
HiperMAX..........................25 GPS ........................................................................................................................26 GPS
Antenna
Installation ......................................................................................26 HiperMAXmicro................................................................................................26 HiperMAX
ATCA...............................................................................................26 Lightning
Protection .............................................................................................28 Equipment
Protection ........................................................................................28 SCRT
Power
Protection
(LPKSCRTPWR1)...........................................................28
1
Physical Installation - Masthead Equipment Warnings and Cautions SAFETY 1. Read
and
follow
all
warning
notices
and
instructions
marked
on
the
product
or
included
in
this
manual
2. When
installed
in
the
final
configuration,
the
product
must
comply
with
the
applicable
safety
standards
and
regulatory
requirements
of
the
country
in
which
it
is
installed.
If
necessary,
consult
with
the
appropriate
regulatory
agencies
and
inspection
authorities
to
ensure
compliance.
3. Ascertain
the
radiation
hazards
when
working
in
an
environment
close
to
other
antennas
and
electromagnetic
fields.
e.g.
working
on
towers
with
other
microwave
transmitters
etc
and
act
accordingly.



Hard
hats
and
harnesses
and
safety
shoes
should
be
worn
when
installing
masthead
equipment
and
antenna
Beware
of
overhead
power
cables
when
installing
antenna








Use
manual
handling
techniques
when
lifting
heavy
objects
WARNING - HAZARDOUS VOLTAGES 1. On
AC
installations,
hazardous
voltages
exist.
Use
caution
when
verifying
or
working
with
AC
power.
Remove
metal
jewellery
that
could
come
into
contact
with
AC
pow…

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Applicant: Airspan Communications Ltd FCC ID: O2J-365T Form 731 Confirmation Number: EA686827 Dear Steven, Thank you for your email dated 16 th November 2007 (ref. 34293). I am pleased to provide the answers to your questions as follows: 1. Submit an explanation of the methodology used for contention (90.203(O)(1) ): Applications for all transmitters must describe the methodology used to meet the requirement that each transmitter employ a contention based protocol (see §§ 90.7, 90.1305 and 90.1321); For either restricted or unrestricted contention declaration s, please submit the following for devices using the same protocol and for devices using different protocols. Two descriptions are required: i. The method used and events that must occur when two or more transmitters attempt to simultaneously access the same channel before and during a communication session. As described in [1], The HiperMAX employs a “listen before transmit” function as an addition to the standard WiMAX protocol. This is the basis of the “Detect and Protect” mechanism referred to in FCC07-99. The purpose of this is to detect co-channel transmissions and prevent frame transmissions that would otherwise interfere with the detected transmission. In the Airspan implementation, the “listen before transmit” function is executed at the start of every air-frame, which is typically configured to be 5ms or 10ms, and transmission is suspended up to the start of the next frame. Note that as WiMAX uses a scheduled air-interface protocol, all Subscriber Stations require MAP information from the Base Station in order to schedule uplink transmissions. In the case the Base Airspan Communications Limited Cambridge House, Oxford Road Uxbridge, Middlesex UB8 1UN UK Tel: +44 1895 467 100 Fax: +44 1895 467 101 http:/www.airspan.com Station ceases transmission, the Subscriber Station will receive no MAP information, and therefore will not transmit any signals. In the case a different system is present, e.g. WiFi, or another unsynchronised WiMAX based system, the “listen before transmit” function will be active, and will, from time to time, result in cessation of transmission. Likewise, the WiFi equipment also implements a “listen before transmit” function. Because the WiFi contention protocol implements random back-off, we expect that the two systems will co-exist “fairly”. ii. The conditions (detection thresholds levels, bandwidth, timing sequences, etc) necessary to actively take steps and not to interfere with other. The detection threshold is configurable through SNMP commands supported by the network element manager – programmable using the Netspan management software. The levels set are in dBm and represent the detected in-band power at the receiver antenna port. This is measured across the bandwidth of the operational channel, ie. 5MHz or 10MHz. Carrier sensing is always performed at the start of the WiMAX frame prior to the transmit zone. This will typically occur every 5ms or 10ms depending on the frame duration configured by the operator. iii. Provide an appraisal of the opportunity for other devices to operate. At this time no specific test data is required The carrier sensing function is executed at the start of every air-frame, which is typically configured to be 5ms or 10ms, and transmission is suspended up to the start of the next frame. This provides other systems to operate in the remainder of the frame. 2. Submit a description for compliance to an enabling signal (90.203(O)(2), 90.1333) Method used by mobile transmitters to identify the base stations with which they are designed to communicate. Describe how the requirement to positively receive and decode an ena bling signal is incorporated (see § 90.1333 of this part); Not Applicable – the equipment being submitted will run software for delivering fixed wireless services. The submission does not include software required for Mobile services. 3. Indicate what standard the above contention protocol implementation is based on. E.g. WiMax, WiFi. The base protocols are compliant with WiMAX standards (as defined by IEEE802.16-2004). The contention protocol is proprietary but carrier sensing thresholds are based on IEEE802.11j requirements. References: [1] Airspan Document: “Carrier Sense – Unrestricted Contention Based Protocol” Yours Sincerely, Charles Blackham For & On Behalf of Airspan Communications

Applicant: Airspan Communications Ltd FCC ID: O2J-365T Form 731 Confirmation Number: EA686827 Dear Mr Dayhoff, Change of Frequency band from 3650-3700 MHz to 3650-3675 MHz Airspan would like to modify their application for the above certification such that the SCRT may only operate in the lower half of the 3650-3700 MHz band. The new frequency bands will be: Lowest Frequency (MHz) Highest Frequency (MHz) Power (W) Frequency Stability Emissions Designator 3652.5 3672.5 0.79 8 ppm 5M0D1D 3655 3670 1.58 8 ppm 10M0D1D Yours Sincerely, Charles Blackham For & On Behalf of Airspan Communications Airspan Communications Limited Cambridge House, Oxford Road Uxbridge, Middlesex UB8 1UN UK Tel: +44 1895 467 100 Fax: +44 1895 467 101 http:/www.airspan.com

Top side of SCRT – blue cap on Antenna port Rear face of SCR showing mounting holes

SCRT label and position FCC ID: 02J-365T SCRT-1-365T

SCRT 1202 board with shielding cans SCRT 1202 board without shielding cans SCRT Front-end module

Setting the Carrier Sense Threshold from NetSpan • Log on to the NetSpan server • From the Base Station Profiles drop-down select BS Custom Configuration • In the List select the profile in use (Software Lab Test in this example) and click the Edit button • Scroll down to the OFDM Channel and enter the required value in the Carrier Sense Threshold edit box and click OK (e.g. -60 dBm in this example) •

Airspan Communications Ltd. Carrier Sense – Unrestricted Contention Based Protocol Page 1 of 2 10 October 2007 1.1 Contention Based Protocol 1.1.1 Definition of Contention-based protocol A protocol that allows multiple users to share the same spectrum by defining the events that must occur when two or more transmitters attempt to simultaneously access the same channel and establishing rules by which a transmitter provides reasonable opportunities for other transmitters to operate. Such a protocol may consist of procedures for initiating new transmissions, procedures for determining the state of the channel (available or unavailable), and procedures for managing retransmissions in the event of a busy channel. Contention-based protocols shall fall into one of two categories: (1) An unrestricted contention-based protocol is one which can avoid co-frequency interference with devices using all other types of contention-based protocols. (2) A restricted contention-based protocol is one that does not qualify as unrestricted. 1.1.2 Type of Contention-based protocol used by SCRT-1-365T-1 Airspan Communications are that the SCRT-1-365T-1 uses an unrestricted contention based protocol as the SCRT operates in a “listen before transmit” mode: Following receipt of uplink traffic from Subscriber Stations and immediately prior to transmission of WiMAX pre- amble the SCRT checks level of received signal across it full transmit bandwidth. Should a signal be present above a pre-determined level set during basestation commissioning, then the SCRT will not transmit any signal during the next timeslot allowing the other spectrum user to transmit unimpeded. As other users of the spectrum are likely to be operating in TDD modes with differing frame lengths it is quite likely that they will not be transmitting when the SCRT checks for other signals prior to transmitting in the next scheduled timeslot a few milliseconds later. 1.1.3 Demonstration of compliance of the “listen before transmit” mode The SCRT was set-up as shown below Signal Generator SCRT Antenna Port Power Meter Attenuation (to protect Sig Gen output) Directional Coupler OBSAI fiber link 48V DC power Spectrum Analyser Cable, C1 Airspan Communications Ltd. Carrier Sense – Unrestricted Contention Based Protocol Page 2 of 2 10 October 2007 Test Procedure was as follows: 1. Set SCRT to specified bandwidth and transmit frequency, F TX , from the table below. 2. Connect cable C1 to Power Meter, set the Signal Generator to transmit at offset F OS from F TX and set power so that level received on power meter is the desired switch-off level P TXOFF corresponding to the carrier detect level set on the SCRT. Disable Signal Generator output 3. Connect cable C1 to SCRT and verify on the Spectrum Analyser that the SCRT is transmitting 4. Enable Signal Generator output and check on Spectrum Analyser that SCRT transmit stops. 5. Reduce Signal Generator output by a 5 dB and check that SCRT transmission re-starts. 6. Repeat at levels and offsets in the table below To show that the SCRT contention based protocol operates across the signal bandwidth, across the allocated band and at different set levels the above test will be done with the following settings: SCRT Transmit Frequency, F TX (MHz) SCRT Bandwidth (MHz) SCRT Carrier Detect turn-off level Interferer Frequency relative to SCRT, F OS (MHZ) Carrier Detect Level, P TXOFF (dBm) Should Transmit be disabled 3655 10 -60 -5 -60 Yes 3655 10 -60 -5 -65 No 3655 10 -65 0 -65 Yes 3655 10 -65 0 -70 No 3655 10 -70 +5 -70 Yes 3655 10 -70 +5 -75 No 3695 10 -60 +5 -60 Yes 3695 10 -60 +5 -65 No 3652.5 5 -60 -2.5 -60 Yes 3652.5 5 -60 -2.5 -65 No 3672.5 5 -65 0 -65 Yes 3652.5 5 -65 0 -70 No 3672.5 5 -70 +2.5 -70 Yes 3652.5 5 -70 +2.5 -75 No 3652.5 5 -70 -5 -45 No 3652.5 5 -70 +5 -45 No As can be seen from the results in section 7.12 of report RP49355JD02A, the SCRT only stops transmitting when presented with an RF signal within the band of operation and at or above a threshold level set in the management software. Signal at lower levels or on different frequencies are ignored. A subsequent test was done whereby the interferer was manually applied for approximately 130 ms, the SCRT started transmitting at the start of the next 8ms frame, 136ms after it last transmitted.

Transmit power is set using the Netspan management software. The maximum TXpower is capped in the SCRT firmware at 32 dBm – this is the level used during testing o f the 10MHz channels For 5MHz channel operation, a maximum TX level of 2 9 dBm shall be entered in the TX Power (custom) box

TEST REPORT FROM RFI GLOBAL SERVICES LTD Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 Test Report Serial No: RFI/RPTE3/RP49355JD02A Supersedes Test Report Serial No: RFI/RPTE2/RP49355JD02A This Test Report Is Issued Under The Authority Of Michael Derby, Radio Performance Group, Service Leader: pp Brian Watson Checked By: Brian Watson Report Copy No: PDF01 Issue Date: 10 October 2007 Test Dates: 23 July 2007 to 24 August 2007 This report is issued in Adobe Acrobat portable document format (PDF). It is only a valid copy of the report if it is being viewed in PDF format with the following security options not allowed: Changing the document, Selecting text and graphics, Adding or changing notes and form fields. This report may be copied in full. The results in this report apply only to the sample(s) tested. RFI GLOBAL SERVICES LTD TEST REPORT S.No. RFI/RPTE3/RP49355JD02A Page: 2 of 54 Issue Date: 10 October 2007 Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 This page has been left intentionally blank. RFI GLOBAL SERVICES LTD TEST REPORT S.No. RFI/RPTE3/RP49355JD02A Page: 3 of 54 Issue Date: 10 October 2007 Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 Table of Contents 1. Client Information............................................................................................................................ 4 2. Equipment Under Test (EUT)......................................................................................................... 5 3. Test Specification, Methods and Procedures............................................................................... 8 4. Deviations from the Test Specification......................................................................................... 8 5. Operation of the EUT During Testing............................................................................................ 9 6. Summary of Test Results............................................................................................................. 10 7. Measurements, Examinations and Derived Results.................................................................. 11 8. Measurement Uncertainty............................................................................................................ 43 9. Measurement Methods................................................................................................................. 44 Appendix 1. Test Equipment Used.................................................................................................. 51 Appendix 2. Test Configuration Drawings...................................................................................... 52 RFI GLOBAL SERVICES LTD TEST REPORT S.No. RFI/RPTE3/RP49355JD02A Page: 4 of 54 Issue Date: 10 October 2007 Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 1. Client Information Company Name: Airspan Communications Ltd. Address: Cambridge House Oxford Road Uxbridge UB8 1UN UK Contact Name: Charles Blackham RFI GLOBAL SERVICES LTD TEST REPORT S.No. RFI/RPTE3/RP49355JD02A Page: 5 of 54 Issue Date: 10 October 2007 Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 2. Equipment Under Test (EUT) The following information (with the exception of the Date of Receipt) has been supplied by the client: 2.1. Identification of Equipment Under Test (EUT) Description: Outdoor Unit, Transceiver Brand Name: Airspan Communications Ltd (Single Channel Radio Transceiver) Model Name or Number: SCR-1-365T-1 Unique Type Identification: SCRT1202-900 Serial Number: T1202900T0100710001630P Hardware Revision: 1202-900 REV04 FCC ID: O2J-365T Country of Manufacture: UK Date of Receipt: 23 July 2007 2.2. Accessories The following accessory was used to exercise the EUT during testing: Description: Indoor Unit, SDR Base station Brand Name: Airspan Communications Model Name or Number: SDR-M-1-GPS Serial Number: S00044063T0623D Cable Length and Type: 3m, fiber 1m, Cat5 UTP Connected to Port: SCRT OBSAI Ethernet Switch 2.3. Description of EUT The equipment under test is a broadband wireless access system base station, providing point-to- multipoint data communication. 2.4. Modifications Incorporated in the EUT During the course of testing the EUT was not modified. RFI GLOBAL SERVICES LTD TEST REPORT S.No. RFI/RPTE3/RP49355JD02A Page: 6 of 54 Issue Date: 10 October 2007 Test of: Airspan Communications Ltd. SCRT (Single Channel Radio Transceiver) To: FCC Part 90 in accordance with FCC Test Plan 365TDD SCRT Certification 3650 to 3700 MHz band FCC Test Plan Document Reference: 005-8300-013 Dated 27 June 2007 2.5. Additional Information Related to Testing Power Supply Requirement: DC Supply of 48 V Intended Operating Environment: Commercial and Light Industry Equipment Category: Fixed Point-to-Multipoint Type of Unit: Base Station (Fixed Use) Channel Spacing: 5 MHz and 10 MHz Highest Fundamental Frequency: 3697.5 MHz Occupied Bandwidth: 5 MHz Channel: 4.8096MHz 10 MHz Channel: 9.2585 MHz For 5 MHz Channel Spacing: Transmit Frequency Range: 3652.5 MHz to 3697.5 MHz Channel ID …

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