© Airspan Networks Inc. WipLL Presentation. © Airspan Networks Inc. Contents WipLL- what is it?...

© Airspan Networks Inc.

WipLL PresentationWipLL Presentation


ContentsContents

• WipLL- what is it?

• WipLL physical layer

• WipLL MAC protocol

• WipLL Applications

• WipLL Roadmap

• WipLL Vs other WLL products

• WipLL Vs xDSL

• WipLL Case Study


WipLL – what is it? WipLL – what is it?

WipLL = Wireless IP Local LoopWipLL = Wireless IP Local Loop

WipLL = IP based Broadband Fixed Wireless Access SystemWipLL = IP based Broadband Fixed Wireless Access System


WipLL: Main Features(1)WipLL: Main Features(1)

• Designed explicitly for Broadband Fixed Wireless Access applications

• High capacity Point to Multi-Point system

• Integrated services on a single platform using a single protocol:

• Data

• Voice

• Modular structure

• High effective throughput of up to 80%

• Network Management (SNMP), remote configuration and S/W down load


•Air link based on Frequency Hopping CDMA (FH-CDMA) scheme

• Operates in:– 2.4 GHz ISM band

– 3.5 GHz

– Other bands: ready for trials

•Operating range exceeds 10 km (LOS)

•Bandwidth Management: MIR, CIR, Fairness



• Rich networking package:– IP routing

– PPPoE bridging

– IP filters: security based on:

• IP addresses

• Protocols: ICMP, UDP, TCP

• Applications or TCP/UDP port numbers: WEB, E-mail, FTP, etc

– QoS based on:

• IP addresses

• Protocols: PPPoE, IP, ICMP, UDP, TCP

• Applications or TCP/UDP port numbers: WEB, E-mail, FTP, etc

– 802.1Q/p for:

• Traffic engineering

• VPNs

• End-to-end QoS

– DiffServ/TOS for end-to-end QoS



WipLL – Physical Layer WipLL – Physical Layer

Frequency BandsFrequency Bands

Frequency Hopping Spread SpectrumFrequency Hopping Spread Spectrum

Standards ComplianceStandards Compliance

ModulationModulation

System ParametersSystem Parameters

AntennasAntennas

Link BudgetLink Budget

Frequency ReuseFrequency Reuse


Frequency BandsFrequency Bands

• Support of various sub 11GHz bands including:Support of various sub 11GHz bands including:

– 2.4GHz (Licensed Exempt ISM) TDD2.4GHz (Licensed Exempt ISM) TDD

– 3.5GHz FDD3.5GHz FDD

– Variety of versions available for trials, such as: Variety of versions available for trials, such as:

• 3.4-3.8 TDD/FDD3.4-3.8 TDD/FDD

• 2.5GHz (MMDS)2.5GHz (MMDS)


Frequency Hopping Spread Spectrum (FHSS)Frequency Hopping Spread Spectrum (FHSS)

• What is Frequency Hopping Spread Spectrum? What is Frequency Hopping Spread Spectrum?

– Spread SpectrumSpread Spectrum

• Encoding method that uses a process other than the information Encoding method that uses a process other than the information signal to expand, or spread, the bandwidth of the signal.signal to expand, or spread, the bandwidth of the signal.

– Frequency Hopping Spread Spectrum (FHSS)Frequency Hopping Spread Spectrum (FHSS)

• The carrier frequency at which the information signal is transmitted is The carrier frequency at which the information signal is transmitted is rapidly changed according to a predefined spreading code. This type rapidly changed according to a predefined spreading code. This type of spreading is implemented in WipLLof spreading is implemented in WipLL


FHSS AdvantagesFHSS Advantages

• Interference rejectionInterference rejection

• Spectrum flexibility - no need for contiguous frequenciesSpectrum flexibility - no need for contiguous frequencies

• Coexistence with other systems – Bluetooth and suchCoexistence with other systems – Bluetooth and such

• Low Probability of Interception (LPI) – eavesdropping protectedLow Probability of Interception (LPI) – eavesdropping protected


Frequency Hopping Channel ArrangementFrequency Hopping Channel Arrangement

• Operator’s RF Channel - divided into multiple sub channels Operator’s RF Channel - divided into multiple sub channels

• 1MHz sub channel spacing1MHz sub channel spacing

• Sub channels are arranged in a hopping sequenceSub channels are arranged in a hopping sequence


Frequency Hopping Channel Arrangement Frequency Hopping Channel Arrangement (Cont’d)(Cont’d)

• WipLL Spectrum mask complies with ETSI standard EN 301 021WipLL Spectrum mask complies with ETSI standard EN 301 021

• 20dB point channel bandwidth is 1MHz or 1.33MHz depending on 20dB point channel bandwidth is 1MHz or 1.33MHz depending on system modesystem mode


Standards ComplianceStandards Compliance

• 3.5 GHz3.5 GHz

– ETSI EN 301 253 (FH-CDMA)ETSI EN 301 253 (FH-CDMA)

– ETSI EN 301 021ETSI EN 301 021

• 2.4 GHz2.4 GHz

– ETSI ETS 300 328ETSI ETS 300 328

– FCC part 15FCC part 15

– TelecTelec


ModulationModulation

• Multi level (8) Frequency Shift Keying (FSK)Multi level (8) Frequency Shift Keying (FSK)

• Adaptive modulation based on RSS and BERAdaptive modulation based on RSS and BER

• Two modes of operation in terms of symbols per second:Two modes of operation in terms of symbols per second:• 4Mbps / 1.33 Mbps4Mbps / 1.33 Mbps

• 3Mbps / 2Mbps / 1Mbps3Mbps / 2Mbps / 1Mbps

• The modes are software selectable by the operatorThe modes are software selectable by the operator


Modulation – Raw Data RatesModulation – Raw Data Rates

Modulation Bits/symbol Mode (Msps) Rate (Mbps)

2-FSK 1 1 1

1.33 1.33

4-FSK 2 1 2

8-FSK 3 1 3

1.33 4


System Parameters System Parameters

• Frequency Bands:Frequency Bands: 2.4GHz (ISM), 3.4 – 3.8GHz, 2.500-2.686GHz (MMDS)2.4GHz (ISM), 3.4 – 3.8GHz, 2.500-2.686GHz (MMDS)

• Radio Technology:Radio Technology:FHSSFHSS

• Duplex mode:Duplex mode: TDD/FDD (50 or 100 MHz duplex spacing)TDD/FDD (50 or 100 MHz duplex spacing)

• Multiple Access Method:Multiple Access Method: Adaptive TDMA using WipLL proprietary PPMA protocolAdaptive TDMA using WipLL proprietary PPMA protocol

• Channel Bandwidth:Channel Bandwidth: 1MHz/1.33MHz1MHz/1.33MHz

(as measured at 20dB points)(as measured at 20dB points)

• Sub – Channel Spacing:Sub – Channel Spacing: 1MHz1MHz

• Output power:Output power: 28±2 dBm28±2 dBm

• Power control:Power control: Remote and Auto Power Control (RTPC, ATPC)Remote and Auto Power Control (RTPC, ATPC)

• Receiver Sensitivity:Receiver Sensitivity: -90/ -83/ -75 dBm-90/ -83/ -75 dBm

(BER 10(BER 10-5-5, @ 2FSK/4FSK/8FSK), @ 2FSK/4FSK/8FSK)

• Carrier to Interference:Carrier to Interference: 12/ 22/ 28 dB12/ 22/ 28 dB

(BER 10(BER 10-5-5, @ 2FSK/4FSK/8FSK), @ 2FSK/4FSK/8FSK)

• Data Rate:Data Rate: 4Mbps max.4Mbps max.

• Modulation:Modulation: Multi level FSKMulti level FSK

• Spectral Efficiency:Spectral Efficiency: 3 bit/sec/Hz3 bit/sec/Hz


WipLL Antenna SystemWipLL Antenna System

• BSR and SPR/IDR – Integrated solution: BSR and SPR/IDR – Integrated solution: • Integral flat printed antenna Integral flat printed antenna

• No RF Cable involvedNo RF Cable involved

• BSR and SPR: ODU / IDU interface: standard CAT5 BSR and SPR: ODU / IDU interface: standard CAT5

• IDR: Fully IndoorIDR: Fully Indoor

• Polarization: Polarization: • Vertical Vertical

• Horizontal – release 4.0Horizontal – release 4.0

• Receive diversity at BSR - dual integral antennasReceive diversity at BSR - dual integral antennas

• External antenna optionExternal antenna option• N type connector for both BSR and SPRN type connector for both BSR and SPR

• TNC connector for IDRTNC connector for IDR


External AntennasExternal Antennas

Reasons for external antenna:Reasons for external antenna:

• Reducing BS costReducing BS cost

– Minimum BS: SDA, BSR and Omni antennaMinimum BS: SDA, BSR and Omni antenna

• Supporting different Sectorization Scheme (4*90Supporting different Sectorization Scheme (4*90ºº, 3*120, 3*120ºº))

• Improving link budget (higher gain)Improving link budget (higher gain)

• Various polarizationsVarious polarizations


BSR Antenna Pattern EnvelopeBSR Antenna Pattern EnvelopeEuropean Standard EN 302 085 CS1European Standard EN 302 085 CS1

• Gain 12dBiGain 12dBi

• HPBW: 60ºx20ºHPBW: 60ºx20º

BSR 3.5GHz A-Plane BSR 3.5GHz E-Plane

Azimuth Elevation

* Each ring corresponds to 5dB attenuation


SPR Antenna Pattern EnvelopeSPR Antenna Pattern EnvelopeEuropean Standard EN 302 085 TS1European Standard EN 302 085 TS1

• Gain 15dBi/ 18dBi (18dBi option is available for Gain 15dBi/ 18dBi (18dBi option is available for 2.4GHz band only)2.4GHz band only)

• HPBW: 20ºx30ºHPBW: 20ºx30º

SPR 3.5GHz A-Plane SPR 3.5GHz E-Plane

Azimuth Elevation

* Each ring corresponds to 5dB attenuation


Link Budget Example (3.5GHz)Link Budget Example (3.5GHz)• TransmitterTransmitter

Tx PowerTx Power 28dBm28dBm

Internal lossesInternal losses -2dB-2dB

Tx Antenna GainTx Antenna Gain 12dBi12dBi

Tx EiRPTx EiRP 38dBm38dBm

• ReceiverReceiver

Required SNR (2FSK)Required SNR (2FSK) 14dB14dB

Rx Antenna GainRx Antenna Gain 15dBi15dBi

Internal lossesInternal losses -2dB-2dB

• NoiseNoise

NFNF 10dB10dB

Bandwidth (1Msps)Bandwidth (1Msps) 1MHz1MHz

Noise LevelNoise Level -104dBm-104dBm

• Fade Margin (99.99% availability)Fade Margin (99.99% availability) 16dB16dB

• Required RSS levelRequired RSS level -87dBm-87dBm

• Allowable path lossAllowable path loss 125dB125dB

• System Range (Free Space Propagation)System Range (Free Space Propagation) 12Km12Km


Frequency ReuseFrequency Reuse

• Frequency reuse of FWA system depends on various Frequency reuse of FWA system depends on various parameters such as:parameters such as:

– C/IC/I

– Sectorization scheme and antenna patternSectorization scheme and antenna pattern

– Propagation model consideredPropagation model considered

– Performance goals (coverage, availability)Performance goals (coverage, availability)

• Reuse N=3 assuming:Reuse N=3 assuming:– typical propagation model (Erceg)typical propagation model (Erceg)

– 90% coverage @ 8-FSK modulation90% coverage @ 8-FSK modulation


Radio PlanningRadio Planning

• Based on off the shelf software (Hexagon)Based on off the shelf software (Hexagon)

– MapInfo as a GIS platformMapInfo as a GIS platform

– Variety of digital map formats supportedVariety of digital map formats supported

– Coverage and Interference AnalysisCoverage and Interference Analysis

– Capacity ModuleCapacity Module

– Automatic Frequency Allocation AlgorithmAutomatic Frequency Allocation Algorithm


WipLL air MAC Protocol WipLL air MAC Protocol


• PPMA (Preemptive Polling Multiple Access Protocol ) :

– Adaptive TDMA

– Centrally coordinated

– Knowledge of available and required resources

– Intelligent polling of users

– Optimized for time bounded applications

– Supports 126 users (CPEs) per each Base Station Radio (BSR)

WipLL Air ProtocolWipLL Air Protocol


Quality of Service – built in PPMAQuality of Service – built in PPMA• The ability to recognize the type of the transmission and assign

bandwidth and other resources accordingly

• Used by BSR when allowing access to different SPRs

WEB Browsing

E-mail

File Transfer

Voice over IP

FTP


Efficient Packet transmission within PPMAEfficient Packet transmission within PPMA

• Data packets are cut into fragments

• The length of the fragments is dynamic according to BER

• CRC is calculated for every fragment

• Re-transmissions are done on fragments only !


WipLL Target Market SectorsWipLL Target Market Sectors

Residential

SOHO

SME


Who buys WipLL?Who buys WipLL?

Customers:

Operators ISPs Utility companies

Opportunities: Rural, sub urban and urban areas Developed and developing countries Complementary solution for ADSL or CATV


WipLL ComponentsWipLL Components

Base S tation

SectorBase S tation

S ite

Subscribers


BSRSDA

CAT5

OMNI DirectionalAntenna

10BT

Base Station Site - Minimum ConfigurationBase Station Site - Minimum Configuration



Interface unit (e.g. Router, Switch)


Base Station Site - Basic ConfigurationBase Station Site - Basic Configuration

IP ATM Other

BSR

BSDU

-48Vdc

100baseTBSPS

BSR BSR BSR BSR BSR

GPS


BSR

BSDU

BSR BSR BSR BSR BSRBSR

BSDU

BSR BSR BSR BSR BSRBSR

BSDU

BSR BSR BSR BSR BSR


Base Station Site - Maximum ConfigurationBase Station Site - Maximum Configuration

BSR

BSDU

-48Vdc

100baseTBSPS

BSR BSR BSR BSR BSR

GPS

IP ATM Other

Interface unit (e.g. Router, Switch)



SPR

SDA 100-240Vac

Subscriber Premises Site:Subscriber Premises Site:Single SubscriberSingle Subscriber


WipLL’s IDRWipLL’s IDR

Power Supply Unit

IDR 100-240 Vac

Subscriber Premise Site: IDR (with external antenna) Subscriber Premise Site: IDR (with external antenna)

PC

To BSR External antenna

RFCable


Operations and Management SystemsOperations and Management Systems

WipManageTM - network elements manager: User friendly GUI Windows based – runs on PC Works in conjunction with Access DB Configuration (QoS, security, routing, etc) Performance monitoring Trap management Software upgrade Multi Device operation

WipConfigTM - local configuration tool Runs on PC and on PDA (new!)


WipLL ApplicationsWipLL Applications

IP Routing and PPPoE bridgingIP Routing and PPPoE bridging

WipLL and ATM: Traffic EngineeringWipLL and ATM: Traffic Engineering

WipLL VPNsWipLL VPNs


SPR

Base Station Site

1

n

BSR

RAG

SDA

PPPoE clients

SDA

PPPoE clients

PSTN

Backbone:IP / ATM / FR / MPLS

SDA

SPR

SPR

BSDU

10BaseT

BSDU

BSDU

BSDU

Router / switch

BSPS

GPS

HEG+

Gatekeeper

WipLL using PPPoE for Internet access and IP for VoIP

Router / Switch

PPPoE server

(BRAS)

Internet


SPR: VLAN 60

Base Station Site

1

n

BSRSDA

SDA

ATMNetwork

SDA

SPR: VLAN 80

BSDU

10BaseT

BSDU

BSDU

BSDU

ATM switch

BSPS

Power

GPS

WipLL in ATM based network: ATM Switch converts 802.1Q to VCs

SDA

SPR: VLAN 60

SPR: VLAN 80

VC # 1

VC # 2

SPRs mark VLAN IdsATM switch maps:VLAN 60 VC#1VLAN 80 VC #2


SPR#1: VLAN 60

Base Station Site

1

n

BSRSDA

SDA

IP backbone

SDA

SPR#3: VLAN 80

BSDU

10BaseT

BSDU

BSDU

BSDU

IP router

BSPS

Power

GPS

Using 802.1Q for VPNs

SDA

SPR#4: VLAN 60

SPR#2: VLAN 80

SPR#1, SPR#4 use VLAN ID 60SPR#1, SPR#4 use VLAN ID 80

SPR#1, SPR#4 are in branches of one clinicSPR#2, SPR#3 are inbranches of another clinic


WipLL RoadmapWipLL Roadmap


WipLL roadmap – contents (1)WipLL roadmap – contents (1)

• WipLL 4.0 – contents

– Improvements for VoIP support

– PDA: General release

– BSDU FE ports – support all modes

– Software support for MMDS and 3.X TDD/FDD – for trials

– Auto Download


WipLL roadmap – contents (2)WipLL roadmap – contents (2)

• WipLL 4.2 – contents

– 3.5 GHz: 1.75MHz, Power Control

– Battery back/up solution for CPE

– Sleep mode for CPE

– Admission control


WipLL Vs other WLL vendorsWipLL Vs other WLL vendors


WipLL: advantages in all OSI layers – layer IWipLL: advantages in all OSI layers – layer I

• WipLL: Cables between Outdoor Unit to Indoor Unit are standard CAT 5 Ethernet cables – in CPE and in Base Station

• Competitors use IF or RF cables

– WipLL’s physical installation is more cost effective

– WipLL’s physical installation is easier


WipLL: advantages in all OSI layers – layer IWipLL: advantages in all OSI layers – layer I

• WipLL: Modular Base Station architecture

Min: BSR+SDA, Max: 24BSRs+4 BSDUs

Add BSRs when needed, add BSDUs when needed

• Competitors use chassis based architecture

– WipLL: more flexible

– WipLL: pay as you grow

– WipLL’s Base Station saves money and space


WipLL: advantages in all OSI layers – layer IIWipLL: advantages in all OSI layers – layer II

• WipLL: PPMA MAC protocol is extremely efficient:

– 80% utilization

– Efficiency does not decrease with number of CPEs

– No collisions

– Was planned especially for WLL (not imported from W-LAN)

– Equal chance of near and far users

– Built in QoS: ideal for all applications, including VoIP


WipLL: advantages in all OSI layers – layer IIWipLL: advantages in all OSI layers – layer II

ChannelUtilization

4 5 7 86 9 40 Number OfSubscribers

20%

80%85%

CSMA

PPMA

75%


WipLL: advantages in all OSI layers – layer IIIWipLL: advantages in all OSI layers – layer III

• WipLL is both IP router and PPPoE bridge

• Most competitors: bridging only

– IP routing is more efficient

– Inherent IP routing often saves additional hardware

– Inherent IP routing simplifies the network management: One NMS for for the WLL system and for routing


WipLL: advantages in all OSI layers – layers II-VIIWipLL: advantages in all OSI layers – layers II-VII

• Enhanced QoS based on addresses, protocols and applications

• Enhanced IP filters based on addresses, protocols and applications

• Rich networking package:– 802.1p/Q

– DiffServ/TOS Interoperability Traffic engineering Security


WipLL and xDSLWipLL and xDSL



• xDSL depends on existence of copper

• Quality of copper and width of copper are varying in different locations

• xDSL has difficulties in providing a similar level of service to customers (different bandwidth in different distance)

• xDSL suffers from high initial costs and high cost of DSLAM

• Maintenance costs of xDSL are high

• xDSL supports only limited distances

• ADSL does not fit business customers because of asymmetry

• ADSL does not fit symmetric applications (like Video games)



• WLL: no need for copper, no dependency on reliability of copper

• WipLL’s Base Station is much more modular than a DSLAM

• WipLL has lower initial costs than xDSL solutions

• WLL: less maintenance costs

• Longer distances: WipLL can reach more than 10KM, xDSL is for short distances only

• WipLL is ideal for Residential and business customers

• WipLL is ideal for all applications: symmetric, asymmetric


WipLL and xDSL – some ideasWipLL and xDSL – some ideas

• xDSL cannot serve as the only solution:

– Use WipLL for ‘low initial costs start’

– Use WipLL for remote subscribers

– Use WipLL as infill for xDSL (in xDSL projects often the coverage reaches only 70%)

– Use WipLL for business customers


WipLL Case StudyWipLL Case Study


SpeedNet Project: JapanSpeedNet Project: Japan

• Customer: utility company

• Service: high speed Internet for residential end users

• Current contract: 30,000 end users

• Already connected: 20,000 end users

• Motivation: utilization of existing Fiber-Optic Backbone

• Micro cell concept:– BSRs are installed on electric poles

– Using external omni antenna

• Features in use:– Auto Connect

– PPPoE bridging

– Fairness


Base Station on a poleBase Station on a pole

BSR is in the

Outdoor Enclosure


BSR (E)

Optical to EthernetConvertor (A)

Power Supply (B)Omni-directionalAntenna (D)

External Surround for Product Assembly (C)

-48 VDC

10BT

WipLL – BSR on poleWipLL – BSR on pole


BSR on a PoleBSR on a Pole


External Antenna on the poleExternal Antenna on the pole


You are now a WipLL You are now a WipLL expert - expert - thanks !!thanks !!

© Airspan Networks Inc. WipLL Presentation. © Airspan Networks Inc. Contents WipLL- what is it?...

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Transcript of © Airspan Networks Inc. WipLL Presentation. © Airspan Networks Inc. Contents WipLL- what is it?...