F9R28T36A06A11AMainstreet Broadband Wireless System - BTS Unit

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This document may contain information regarding the use and installation of non-Newbridge products. Please note that this information is provided as a courtesy to assist you. While Newbridge tries to ensure that this information accurately reflects information provided by the supplier, please refer to the materials provided with any non-Newbridge product and contact the supplier for confirmation. Newbridge assumes no responsibility or liability for incorrect or incomplete information provided about non-Newbridge products. Newbridge has made reasonable efforts to ensure that the 28110 and 28120 MainStreet NIUs, Release 1.1, comply in all material respects with the “Referenced Detailed Functional Specification for Newbridge Product Date Compliance”. 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Please direct questions or comments about Newbridge documentation to: http://www.newbridge.com/documentation/feedback.html RegionContact NumberFax Number North and South America (703) 834-5300(703) 318-5153 Europe, Middle East, Africa and the former Soviet Union (Within UK) 0 1633 413 666 (Outside UK) +44 1633 413 666 Asia PacificAustralia 1 800 814 499 China 10 800 600 4602 Hong Kong 800 90 8402 Japan 00 531 60 4602 Korea 007 986 01 8280 Malaysia 1 800 88 4602 New Zealand 0 800 143600 Internethttp://www.newbridge.com MainStreet Broadband Wireless Technical PracticesTable of contents NNP 95-4882-01-00-AIssue 1, April 1999 v DRAFT Table of contents Mandatory regulations 1.Overview 1.1Broadband wireless system overview ............................................................... 1-1 1.2Frequency and bandwidth utilization ................................................................ 1-3 2.Equipment overview 2.1Equipment list ................................................................................................... 2-1 2.2T-ARIC card ...................................................................................................... 2-2 Connectors .................................................................................................... 2-3 2.3MAU .................................................................................................................. 2-4 2.412:2 Combiner/Splitters .................................................................................... 2-5 2.52:1 Combiner/Splitters ...................................................................................... 2-6 CPE 2:1 Combiner/Splitter ............................................................................ 2-6 BTS 2:1 Combiner/Splitter ...........................................................…

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Date: April 30, 1999 Note! All schematics and operational descriptions of the RF modules for the BTS and CPE are not accessible due to confidentiality from the supplier. All documents for the RF section will be sent to the FCC directly by the Radio supplier.

Oct. 25,1999 Federal Communications Commission EQUIPMENT APPROVAL SERVICES P.O. Box 358315 Pittsburgh, PA 15251-5315 Reference: Request for Confidentiality Newbridge Networks Corporation is in the process of completing a new product for the Local Multipoint Distribution System (LMDS) band and has requested for the FCC to keep certain documents confidential. The list below mentions the documents that need be keep confidential due to non-disclosure agreements with our OEM suppliers. Company Name: Newbridge Networks Corporation Product Name:MainStreet Broadband Wireless System BTS Emission Designator:216M DXW FCC ID#:F9R28T36A06A11A Confirmation #:EA94075 CPE Emission Designator:9M00 DXW FCC ID#:F9R28T09A01A11B Confirmation #:EA94077 Address:600 March Road Kanata, Ontario CanadaK2K 2E6 Telephone:613-591-3600 Fax:613-599-3654 Contact:Vito Scaringi EMC/ Wireless Approvals Specialist 613-599-3600 ext.: 2389 Email: [email protected] Vito Scaringi EMC/Wireless Approvals Specialist Newbridge Networks Corporation 613-599-3600 ext.: 2389 List of Material to maintain Confidentiality A. Basestation (BTS)
All Schematics for the ARIC and the OTU and ORU
All Bill of Materials for the ARIC and the OTU and ORU B. Customer Premises Unit (CPE)
All Bill of Materials for the NIU and the OTRU
All Schematics , for the NIU and the OTRU

Date: April 30/99 Mainstreet Broadband Wireless (Release 1.1) System Overview/ Operational Description INTRODUCTION This document provides a system overview for the Release 1.1 Newbridge Mainstreet Broadband Wireless Product . The information listed is a simplified version of the overall system technical specification. System Overview The Broadband Wireless product portfolio is a family of products that are designed to work together. The Broadband Wireless System is a network of Network Interface Units connected to Base Stations via wireless links and the Base Stations are, in turn, connected to the ATM Backbone Network via wired or point to point wireless links. The network is augmented by a Network Manager. A high level view of the network is shown below (Figure 1.0). As shown in the figure, the cellular network structure is based on overlapped 4-sectored cells. OC-3 Cell Relay 2 x OC-3 Cell Relay ATM Network Database 46020 Network Management Internet PSTN TDM Frame Relay Cell Relay Circuit Emulation Cell Relay n x OC-12 Cell Relay Low Capacity Cell Mid Capacity Cell Mid Cap Sectored Figure 1.0 Broadband Wireless Network Topology The Broadband Wireless system provides a communications infrastructure with both WAN and ATM points of attachment. The key features provided by the Broadband Wireless System are: a) high-bandwidth b) flexible bandwidth assignment c) scalability d) speed of deployment Error! Reference source not found. shows a simple application of a Release 1.1 Broadband Wireless System. In the diagram, the devices are divided into the Broadband Wireless System proper (the elements on the unshaded background) and external devices (the elements on the shaded background). BTS(36170) T1 NIU E1 NIU ATM (Backbone) Network 46020 E1 T1 PBX MUX Ethernet NIU PC Ethernet 45020 PC Ethernet Figure1.2: System Overview The Broadband Wireless product is targeted at fixed wireless broadband applications, such as local access loops, point-to-point links etc. The system consists of the following components. • Backbone Network The backbone system is an ATM network interconnecting all BTSs to various services and to the 46020 network manager. A BTS may also function as a backbone component. • Base Transceiver System (BTS) The BTS is the hub that delivers and collects all the wireless traffic from and to the subscribers in the BTS coverage area. The BTS is also the linking point between the subscribers and the Backbone Network. The BTS can also support standard 36170 wireline services. • Network Interface Unit (NIU) A NIU is situated at the subscriber location. The NIU is used to provide a wireless connection between the CPE and the BTS. In this release two types of NIUs are supported, each providing a single interface. Backbone Network The Backbone Network is an ATM network and/or TDM network connected to the wireless network at one or more points. The 36170 based BTS can easily work with the backbone system through standard cell relay interfaces, such as T1/E1, DS3/E3, or OC3/STM1, etc. Base Transceiver System The Rls 1.1 base station platform is based on Rls 4.0 of the 36170 multi services platform. The card cages are 19” rack assemblies with the following dimensions: • 48 cm (19”) wide • 53 cm (21”) high • 29 cm (11.5”) deep Single Shelf BTS System Figure 1.3 shows a typical single shelf base-station / backbone. In this configuration, all switching and control functions are self contained in a single peripheral shelf. Full control and switching fabric redundancy is supported as shown in the figure. Non redundant configurations are also available through de-populating the appropriate control and hub cards. A single shelf supports 12 universal card slots (UCS), with an aggregate switching capacity of 1.6 Gbps. A single slot is capable of supporting up to an OC-3 of bandwidth. For the Rls 1.1 product , the TDMA ARIC cards occupy two peripheral card slots. In addition to the UCS slots, the peripheral shelf supports a fully redundant (X and Y switching planes) switching matrix using two additional card slots. These are optionally populated with either switching hub cards (single shelf configurations) or regular hub cards (in multishelf configurations). TDMA ARICs Figure 1.3 Single Shelf Base-Station / Backbone Switch Single Shelf BTS Configuration Provides the configuration for a single shelf, 4 sector base station supporting redundancy on the control, switching, backbone interconnect and radios. QuantityCard TypeNotes 1 Peripheral shelf 2 Control cardsFully redundant control configuration 2 Switching HUB cardsFully redundant switching matrix 4 TDMA ARICsOne ARIC per sector (non redundant), one down stream & two upstream carriers per sector 2 OC-3 Cell relayFully redundant backbone aggregate cards 1 SSUTiming source 1 GPS receiverOptional if timing is not taken from the backbone OC- 3s 8 12 port combiner splitter unitsTwo per sector ( TX and RX) 8 OTUsFully redundant OTUs per sector 8 ORUsFully redundant OTUs per sector Single shelf BTS configuration Multishelf BTS System For growth beyond a single shelf, the switching matrix capacity is expanded with the addition of a pair of switching shelves, and additional peripheral shelves are added to the BTS forming a multi-shelf complex as shown in Error! Reference source not found. . One switching shelf is required per control plane. In this configuration, the switching hub cards, located in the peripheral shelf, are replac…

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TDMA ARIC The ARIC card is broken up into 3 pcbs, which are the: ! TDMA ARIC card which is the interface to the ATM switch (36170) ! ARIC Modem module from Stel ! ARIC I/F Converter Module A block diagram of the TDMA ARIC is shown in Figure 1.9 below. The card occupies two UCS slots in a 36170 peripheral shelf and supports the following functionality: • ATM Interface to the 36170 backplane • ATM Cell queuing on egress and policing on ingress • One QPSK downstream modulator supporting concatenated RS 204:188 and 7/8 convolutional coding, interleaving and two software provisionable symbol rates • Two up stream differentially coded QPSK burst demodulators with FEC • Integral L-band Tuner supporting software provisionable channel assignment from the network manager • Serial ports for configuration and monitoring of upmast base station radios • MAC layer supporting dynamic bandwidth allocation • Support of UBR and CBR traffic ATM classes of service BACKPLANE IF X Y X Y Egress Ingress ATMC & RAM uP DRAM PROM FLASH IF INTERFACE IF UP CONV IF TUNER DWN CONV BURST DEMODUATOR MAC FPGA uP MODUATOR FEC GCI RS 4422 SERIAL PORTS UTOPIA DRAM FLASH FEC DE-CODE FEC ENCODE Figure 1.9 TDMA ARIC Block Diagram A detailed block diagram of the TDMA ARIC modem is shown in Figure 1.10 below. 1050-1750 MHz 550-850 MHz I/Q DEMOD 7/8 CONVOL ENCOD RS ENCOD 204,188 SYNC BYTE INV & RANDOM- IZE QPSK MOD UTOPIA MATCHED FILTER IF TUNER IF UP CONV R1 IF D 1 I F INTER- LEAVER I=12 PULSE SHAPING DQPSK DEMOD MAC FPGA MAC processor I/Q DEMOD RS DECODER 63,53 MATCHED FILTER IF TUNER DQPSK DEMOD SYNC PREAMBLE REMOVE GCI RS 422 DRIVERS UTOPIA MEMORY Figure 1.10 TDMA ARIC Modem Block Diagram

Proprietary Data Nondisclosure agreement required for disclosure outside Stanford Wireless Broadband, Inc. AMM FCC FILING INFORMATION 4/30/99 Proprietary Data Nondisclosure agreement required for disclosure outside Stanford Wireless Broadband, Inc. The AMM is derived from the Stanford Telecom Model 11250 Air Modem Card card used in the Stel-10451 LMDS Air Interface Unit. The AMM will provide point-to- multipoint wireless ATM services for the Newbridge Networks 36170 basestation. Features ! Dual Demodulators capable of ATM rates up to 10.1 MBPS (12.93 MBPS burst rate capability) ! DAVIC compliant Single channel modulator capable of providing up to a 36 MHz wide channel ! Contention based bandwidth-on-demand Medium Access Control ! HDLC interface with ARIC ! Two TTL compatible serial interfaces ! Single RS-232 Serial Interface for integration and production support ! Physical Layer UTOPIA Data Interface with ARIC ! Designed to meet form factor requirements of Newbridge 36170 ! See appended block diagram for the ARIC Modem Module Downstream Requirements The AMM shall provide a QPSK modulated IF carrier. The characteristics of this signal are described in the following sections: Transmit symbol clock The AMM shall derive the Transmit symbol clock from a 16.384 MHz clock derived from a Stratum Level 3 reference. Note that the accuracy of the symbol clock will be directly related the stability of this reference. Downstream Bit Rate The Downstream bit rate is defined as the rate of the clock feeding the Reed-Solomon encoder. a) Maximum bit rate 51.644 MBPS b) Minimum bit rate2.9013 MBPS c) Default bit rate45.841 MBPS Proprietary Data Nondisclosure agreement required for disclosure outside Stanford Wireless Broadband, Inc. Downstream Encoding The following diagram shows the conceptual block diagram for the downsream encoding. Downstream Modulation The system shall employ conventional Gray-coded QPSK modulation with absolute mapping (no differential encoding). For QPSK modulation, bit mapping in the signal space as given in the constellation diagram below shall be used. The constellation points represent the (IQ) bit couples as output from the convolutional encoder. I Q 0010 1101 Baseband Filter Characteristics Prior to modulation, the I and Q signals shall be square-root raised cosine filtered. The roll-off factor shall be 0.35. The square-root raised cosine filter shall have a theoretical function defined by the following expression: data clock Sync1 byte inversion & Random- ization Reed- Solomon Coder (204,188) Convol. Inter- leaver I = 12 QPSK/QAM Modulator LMDS HEAD-END Baseband Interface & Sync Convolutional code Puncturing & Mapping I Q To RF channel MPEG2-TS or ATM Clock & Sync Generation Baseband Pulse Shaping RF Physical interface LMDS ACCESS NODE TRANSMITTER Proprietary Data Nondisclosure agreement required for disclosure outside Stanford Wireless Broadband, Inc. Hfforf f Hf f ff for fff Hfforf f N N N NN N ()() ()sin()() ()() / =<− =+ −                −≤≤ + =>+        11 1 2 1 22 11 01 12 α π α αα α where f T R N s s == 1 22 is the Nyquist frequency androll-off factor α = 0.35. Baseband Interface The AMM shall provide baseband I and Q outputs to the Tuner. These outputs shall be consistent with the input specifications to the RF Microdevices 2730 Quadrature Mixer. a) I/Q Amplitude mismatch ± 0.2 dB b) Amplitude variation ± 0.2 dB Transmit IF This output will be used for integration testing by Stanford Telecom. The AMM shall transmit an IF signal with the following properties: a) Transmit IF Frequency 70 MHz ± 5 KHz b) Transmit Power (IF Interface)-20 dBm ± 5 dB c) Max Channel Bandwith36 MHz d) Spectral InversionNot Inverted e) Out-of-Band Discrete Spurious-60 dBc f) In-band Discrete Spurious-45 dBc g) Maximum Phase Noise OffSetLevel (dBc) 1 kHz-76 10 KHz-84 50 kHz-108 100 kHz-113 1000 kHz-122 2000 kHz-130 Proprietary Data Nondisclosure agreement required for disclosure outside Stanford Wireless Broadband, Inc. System Gain Control There are six gain or level control elements in the system. Three elements reside in the AMM and three reside in the NIU. AMM Gain Control Elements First, there is an IF gain control. This local loop operates on the measured noise output from the 3803 ASIC. The measured noise output is the 3803 received power output ( RSSI or RSL ) (measured over a 191 symbol-duration period) when the preamble detect flag has not fired. This value is averaged over a long interval and is used to control the IF gain such that the noise level is at the desired value. The objective of this control loop is to compensate for IF gain changes due to aging and temperature. Consequently, this loop can be very slow. In our initial implementation we assume that the noise measurements are only taken in empty slots. The location of these empty or noise slots is provided by the time slot manager. The noise will be measured in one polling response (PR) slot per superframe. This PR slot is measured for the phantom NIU. A variable loop gain factor of K n is allowed to permit various bandwidths to be achieved. This loop gain is small and the loop time constant should be in the ten’s of seconds. Second, when the preamble detect flag is high in a polling response slot the 3803 received power output (RSSI or RSL) is the signal energy (normalized to power) measured over 191 symbols. One needs to set the threshold level an appropriate amount over the noise level such that the desired probabilities of miss and false alarm are obtained. This a one time setting. Incorrect setting may increase the required Eb/No above that one would expect from the coded portion of the burst Third, when the preamble detect flag is high the 3803 received power output is the signal power and it is compared against a reference level and the error ( ∆ P sig ) determined. This error is fed back to the NIU on a superframe (about two seconds duration) basis. One purpose of this loop is to compensate for …

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ARIC modulator The modulating waveform is a pair of baseband signals representing the inphase (I) and quadrature (Q) information of the QPSK signal. The waveforms are digitally generated. L-C lowpass filters after the DACs attenuate the sampling images and clock spurs. Conversion to IF is done directly using a monolithic integrated quadrature modulator IC containing the mixers and LO 90 degree phase splitter. The LO is generated at the carrier frequency by a frequency synthesizer programmable over the IF range of 950 -2050 MHz. The synthesizer is referenced to a 12 MHz TCXO with+/- 2.5 ppm stability over the temperature range 0 to 70 degree C. IF filters are very wide relative to the channel width of 36 MHz and attenuate harmonics of the carrier. The filter stopband is switchable to maintain suppression of the second harmonic as the carrier is tuned over the IF band. The tuner output level is maintained by a control loop monitoring a temperature compensated schottky diode detector. The loop maintains the carrier at a constant level over the IF band. The final output level from the tuner is controllable in 2 dB steps from +8 to -22 dBm via a digital attenuator. LO I+ 1-2 GHz Synthesizer lowpass filters I- Q+ Q- isolation transformers QPSK modulator 12 MHz TCXO output power detection voltage controlled attenuator protection digitally controlled attenuator modulating waveforms from DACs microcontroller ALC switched bandwidth low pass

General Description ORU 05/03/99 1:26 PM 1. SCOPE This document establishes the general description for the functional performance of the frequency stability and control, spurious suppression and power control requirements for the Outdoor Receiver Unit (ORU). 2. DESCRIPTION 2.1 Frequency stability and control. The Local Oscillator (LO) frequency exhibits a stability/accuracy of less than ± 8 parts per million (ppm) as a result of initial setting inaccuracy, temperature drift and aging over 10 years. The stability is achieved by phase-locking the LO to a stable 100 MHz reference oscillator that is internal to the ORU. The 100 MHz reference is an Ovenized Crystal Oscillator (OCXO) and the stability requirements guaranteed by the OCXO manufacturer. Adjustment of the frequency of the crystal oscillator can be performed in one of two ways. a) Some oscillators employ a mechanical tuning adjustment that allows the frequency to be controlled within ± 4 ppm from the initial setting. The mechanical tuning does not allow for frequency control after the unit has been sealed. b) Some oscillators employ a voltage controlled frequency adjustment that allows the frequency to be controlled within ± 3 ppm from the initial setting over a voltage range of 0 to 5 VDC. The voltage control enables the frequency to be adjusted externally via the RS-422 interface. 2.2 Spurious suppression. Radiated spurious emissions from the ORU, at the RF input port, are suppressed by the use of pre–select filtering. A standard WR-28 waveguide filter is employed which rejects signals > 125 MHz from either band edge by >25 dB. The cutoff characteristics of WR-28 waveguide and the length of the pre-select filter, reject signals DC – 20 GHz by > 90 dB. The fundamental LO leakage, LO harmonics and sub-harmonics at the RF input port are < 30 dBm. The use of the pre-select filter and the reverse isolation of the internal mixer and input amplifier achieve this. 2.3 Power Control. The ORU is a receiver and therefor there are no signals transmitted at the RF input port beyond the spurious emissions stated in section 2.2.

General Description OTU 05/03/99 1:27 PM 1. SCOPE This document establishes the general description for the functional performance of the frequency stability and control, spurious suppression and power control requirements for the Outdoor Transmitter Unit (OTU). 2. DESCRIPTION 2.1. Frequency stability and control. The integral Local Oscillator (L.O.) is frequency locked to the reference oscillator source supplied via the companion receiver unit. The frequency stability is guaranteed by the manufacturer to be +/- 8ppm over 17 years. 2.2. Spurious suppression. The radiated spurious emissions from the OTU, at the RF output port, are suppressed by the use of a waveguide filter which rejects signals> 100 Mhz from either band edge by> 15 dB. The cutoff characteristics of WR-28 waveguide and the length of the filter reject signals DC- 20 GHz by > 90dB. The LO level, LO harmonics and sub-harmonics is cut off by this filter and guaranteed to be less than -30 dBm. 2.3. Power control. The OTU output power is controlled by the equipment downstream of the IF input signal. An RS-422 interface can be used to monitor phase-locked-loop status. The output power can be turned off remotely though this interface if a non-compliant condition is detected. There is no limiting circuitry on the output power, however, the power amplifiers will saturate a few dB above the rated P1dB level.

Quick and easy to deploy, the Newbridge ® broadband wireless access solution enables operators to capture new markets and revenue immediately. Its multiservices platform supports the simultaneous delivery of data, Internet, voice and video, and its integrated network and service management permits one- platform management of both wireline and wireless resources. Value-added applications also provide a host of differentiated business and residential services. A key component of the Newbridge broadband wireless solution is the MainStreet ® ARIC (ATMRadio Interface Card). The ARIC fits into a universal card slot on the MainStreetXpress ™ 36170 Multiservices Switch and provides an interface between the wireline and wireless worlds. Its main functions are ATM cell grooming and distribution, radio modulation/demodulation, forward error correction (FEC) and digital coding. The broadband wireless product portfolio is a family of products that are designed to work together. NIUs (network interface units) are connected to multiservices base stations via wireless links, and the base stations are, in turn, connected to the backbone network through wired or point-to-point wireless links. The system provides a communications infrastructure with both narrowband WAN and broadband ATM points of attachment. The entire network is managed, end-to-end by the industry-leading MainStreetXpress network and service management suite. Highly scalable and fully managed as part of a multiservices solution, Newbridge broadband wireless products together provide a powerful, cost-effective broadband wireless access solutionfor last- mile delivery of a wide range of data, Internet, voice and video services. MainStreet ARIC(ATMRadio Interface Card) RELEASE 1.1 8762_ARIC dts.qxd 10/31/98 3:06 AM Page 3 MainStreet ATM RADIO INTERFACE CARD (ARIC) Wireline/Wireless Customer Service Billing MainStreetXpress 46020 Wireline/Wireless Base Station Management Internet Service Provider Carrier Customer PSTN Newbridge Wireless Transmitter/Receiver Backbone Network MainStreetXpress 36170 MainStreetXpress 36190 Base Station (Detailed View) ATM Base Station ARIC Card Base Station Architecture In the wireless base station, common control and switching functions are performed by the MainStreetXpress 36170 Multiservices Switch equipped with the associated interface cards such as common control, switching fabric, service, OC-3/OC-12, frame relay, TDM (time division multiplexing) and ARIC. The base station may be configured as either single or multi-shelf to meet the bandwidth requirements of the cell site. A single MainStreetXpress 36170 shelf supports up to 160 Mbit/s of radio capacity in a fully redundant configuration. The individual ARIC cards support either 20or 40 Mbit/s of downstream ATM payload and 20Mbit/s of upstream ATM payload. Their IF (intermediate frequency) outputs can be combined through external combiners, to increase the overall cell/sector capacity. To support additional services within the base station, other interfaces may be included on the MainStreetXpress 36170: •Eight-port T1 TDM 1/0 cards with cross-connect capabilities •DS3 TDM 3/1 cards with cross-connect capabilities •Eight-port T1 frame relay cards •16-port ADSL cards ARIC,QPSK/TDMA Variant (ARIC-TDMA) The ARIC, QPSK-TDMA (quarternary phase shifting key/time division multiple access) variant (ARIC-TDMA) is an interface card that carries out a number of functions within the MainStreetXpress 36170 Multiservices Switch. This card essentially interfaces the ATM portion of the network with the RF (radio frequency) upmast receivers and transmitters portion of the access network. The ARIC can be plugged into a standard MainStreetXpress 36170 universal card slot. Initially, PVC (per…

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