FiWiAccessNetworks The evolution of broadband access networks toward bimodal fiber-wireless (FiWi) accessnetworks,describedinthisbook,maybeviewedastheendgameofbroadband access. After discussing the economic impact of broadband access and current world- widedeploymentstatistics,allthemajorlegacywirelineandwirelessbroadbandaccess technologies are reviewed. State-of-the-art GPON and EPON fiber access networks are described, including their migration to next-generation systems such as OCDMA andOFDMAPONs.Thelatestdevelopmentsofwirelessaccessnetworksarecovered, including VHT WLAN, Gigabit WiMAX, LTE, and WMN. The advantages of FiWi access networks are demonstrated by applying powerful network coding, heteroge- neous optical and wireless protection, hierarchical frame aggregation, hybrid routing, and QoS continuity techniques across the optical–wireless interface. The book is an essentialreferenceforanyoneworkingonopticalfiberaccessnetworks,wirelessaccess networks,orconvergedFiWisystems. MartinMaier is an Associate Professor at the Institut National de la Recherche Scien- tifique (INRS), University of Québec, and the Founder and Creative Director of the OpticalZeitgeistLaboratory.HereceivedhisPhDdegreeinelectricalengineeringfrom theTechnicalUniversityBerlin,Germanyandamongsthisawardshewasaco-recipient ofthe2009IEEECommunicationsSocietyBestTutorialPaperAward.Heistheauthor ofOpticalSwitchingNetworks(CambridgeUniversityPress,2008). Navid Ghazisaidi is an R&D Systems Engineer at Ericsson Inc., San Jose, USA. He received his PhD degree in Telecommunications from the University of Québec, Canada and participated in the prestigious European research projects BIONETS (BIOlogically-inspired autonomic NETworks and Services) and ACCORDANCE (A ConvergedCopper-Optical-RadioOFDMA-basedAccessNetworkwithhighCapacity andflExibility). “The area of FiWi networks is central to the current evolution path of networks but presentssignificantchallenges,inparticularinintegratingdisparatesystems.Thisbook providesacogentandhighlyusefulexpositionofthemaintechnologiesinFiWi,includ- ingnotonlytraditionaltechniques,butalsoveryrecentdevelopmentssuchasnetwork coding.Thisbookisatoolbothforworkingengineersandforresearchersenteringthe FiWiareafromtheopticsorfromthewirelessdomains”. ProfessorMurielMédard,MassachusettsInstituteofTechnology FiWi Access Networks MARTIN MAIER UniversitéduQuébec,Montréal NAVID GHAZISAIDI R&DPDUBroadbandAccess,EricssonInc. CAMBRIDGEUNIVERSITYPRESS Cambridge,NewYork,Melbourne,Madrid,CapeTown Singapore,SãoPaulo,Delhi,Tokyo,MexicoCity CambridgeUniversityPress TheEdinburghBuilding,CambridgeCB28RU,UK PublishedintheUnitedStatesofAmericabyCambridgeUniversityPress,NewYork www.cambridge.org Informationonthistitle:www.cambridge.org/9781107003224 (cid:2)c CambridgeUniversityPress2012 Thispublicationisincopyright.Subjecttostatutoryexception andtotheprovisionsofrelevantcollectivelicensingagreements, noreproductionofanypartmaytakeplacewithoutthewritten permissionofCambridgeUniversityPress. Firstpublished2012 PrintedintheUnitedKingdomattheUniversityPress,Cambridge AcatalogrecordforthispublicationisavailablefromtheBritishLibrary LibraryofCongressCataloginginPublicationdata Maier,Martin,1969– FiWiaccessnetworks/MartinMaier,NavidGhazisaidi. p. cm. Includesbibliographicalreferencesandindex. ISBN978-1-107-00322-4(hardback) 1. FiWiaccessnetworks. 2. Wirelesscommunicationsystems. 3. Opticalfiber communication. I. Title. TK5105.775 [.M34 2012] (cid:3) 621.3981–dc23 2011035787 ISBN978-1-107-00322-4Hardback CambridgeUniversityPresshasnoresponsibilityforthepersistenceor accuracyofURLsforexternalorthird-partyinternetwebsitesreferredto inthispublication,anddoesnotguaranteethatanycontentonsuch websitesis,orwillremain,accurateorappropriate. Tomyparents M.M. Totheloveofmylife N.G. Contents Listoffigures pagexiii Listoftables xvii Preface xix Acknowledgments xxi PartI Introduction 1 1 Broadbandaccess 3 1.1 Definition 3 1.2 Economicimpact 4 1.3 Coverage 5 1.4 Forecast 10 2 Legacybroadbandtechnologies 15 2.1 Fixedwirelinebroadbandtechnologies 15 2.1.1 Digitalsubscriberline 15 2.1.2 Cablemodem 20 2.1.3 Broadbandoverpowerline 23 2.2 Fixedwirelessbroadbandtechnologies 25 2.2.1 MMDS 25 2.2.2 Freespaceoptics 27 2.2.3 Satellite 28 2.3 Mobilewirelessbroadbandtechnologies 30 2.3.1 GPRS 30 2.3.2 EDGE 32 2.3.3 UMTS 35 PartII Fiberaccessnetworks 39 3 GPON 45 3.1 Architecture 45 3.1.1 Videooverlay 45 3.1.2 Protection 46 viii Contents 3.2 Wavelengthallocation 47 3.3 GPONencapsulationmethod 48 3.3.1 Frameformats 48 3.3.2 GEM 49 3.4 Bandwidthallocation 50 4 EPON 51 4.1 Architecture 52 4.2 Multipointcontrolprotocol 53 4.3 Dynamicbandwidthallocation(DBA) 54 4.3.1 Statisticalmultiplexingmethods 55 4.3.2 AbsoluteQoSassurances 57 4.3.3 RelativeQoSassurances 60 4.3.4 DecentralizedDBAalgorithms 62 4.4 10G-EPON 63 5 Next-generationPON 65 5.1 NG-PON1 67 5.1.1 XG-PON 67 5.1.2 Long-reachXG-PON 67 5.1.3 WDMXG-PON 68 5.2 NG-PON2 68 5.2.1 Wavelength-routingPON 69 5.2.2 OCDMAPON 70 5.2.3 OFDMAPON 71 PartIII Wirelessaccessnetworks 73 6 WiFi 75 6.1 LegacyWLAN 75 6.2 QoSinWLAN 78 6.2.1 EDCA 79 6.2.2 HCCA 80 6.3 HTWLAN 81 6.3.1 Frameaggregation 81 6.3.2 Reversedirectionprotocol 82 6.3.3 Bandwidthefficiencytechniques 83 6.4 VHTWLAN 84 6.4.1 VHTL6 84 6.4.2 VHT60 85 6.4.3 VHTapplications 85 Contents ix 7 WiMAX 86 7.1 FixedWiMAX 86 7.1.1 PHYlayer 86 7.1.2 MAClayer 86 7.2 MobileWiMAX 89 7.2.1 QoSinmobileWiMAX 90 7.2.2 MobileWiMAXhandover 91 7.3 Next-generationWiMAX 93 7.3.1 MultihoprelayWiMAX 93 7.3.2 GigabitWiMAX 95 8 LTE 98 8.1 PHYlayer 98 8.2 MAClayer 100 8.2.1 Resourceallocation 100 8.2.2 Retransmission 101 8.3 Powersaving 102 8.4 Handover 103 8.5 LTE-Advanced 103 9 Wirelessmeshnetworks 105 9.1 Characteristics 105 9.2 WiFi-basedWMN 106 9.2.1 Routingprotocols 106 9.2.2 MACprotocols 109 9.3 WiMAX-basedWMN 110 9.3.1 Architecture 110 9.3.2 Scheduling 110 PartIV FiWiaccessnetworks 111 10 RoFvs.R&Fnetworks 117 10.1 Enablingtechnologies 120 10.1.1 RoFtechnologies 120 10.1.2 R&Ftechnologies 122 10.2 State-of-the-arttestbeds 122 10.2.1 RoFtestbed 123 10.2.2 R&Ftestbed 123 10.3 Challengesandopenissues 124 10.4 Summary 125 11 Architectures 127 11.1 Cellulararchitectures 127 x Contents 11.1.1 Movingcell 129 11.1.2 Movingextendedcell 129 11.1.3 Outdoorvs.indoor 130 11.2 WiMAX-basedarchitectures 130 11.2.1 IntegratedEPON-WiMAX 130 11.2.2 SuperMAN 131 11.3 WiFi-basedarchitectures 133 11.3.1 Unidirectionalring 133 11.3.2 Bidirectionalring 134 11.3.3 Hybridstar-ring 135 11.3.4 Unidirectionalring-PON 136 11.4 Summary 137 12 Networkplanningandreconfiguration 138 12.1 ONUplacement 138 12.2 Inter-ONUcommunications 139 12.2.1 Peer-to-peercommunications 139 12.2.2 FiWivs.WMNnetworks 141 12.2.3 Directinter-ONUcommunications 141 12.3 Reconfiguration 142 12.3.1 MARIN 143 12.3.2 GROW-Net 143 12.4 Summary 145 13 Techno-economicanalysis 146 13.1 Totalcostofnetworkownership 147 13.1.1 CAPEX 147 13.1.2 OPEX 147 13.2 ComparativeanalysisofEPONandWiMAX 148 13.2.1 Techno-economicmodel 148 13.2.2 Techno-economicevaluation 149 13.3 Numericalresults 153 13.4 Summary 158 14 Networkcoding 160 14.1 NetworkingcodinginPON 160 14.2 NetworkcodinginNG-PONs 161 14.2.1 Inter-flownetworkcoding 162 14.2.2 Intra-flownetworkcoding 163 14.2.3 Metro-accessnetworks 163 14.3 NetworkcodinginFiWiaccessnetworks 165 14.3.1 Performanceenhancement 165 14.3.2 Resilience 167