主题：5GA-Innovations-in-Backhaul-Tech 英文资料
5GA-Innovations-in-Backhaul-Tech-WP-WORD-PDF.docx.pdf
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目录：
ExecutiveSummary.....................................................................................................................................4
1 Introduction and Background.............................................................................................................5
1.1 5G Transport Requirements and Technologies........................................................................... 5
1.2 Business Drivers for Alternative TransportTechnologies.......................................................... 12
2 Integrated Access Backhaul(IAB)......................................................................................................12
2.1 Standardization of IAB in 3GPP.................................................................................................14
2.2 IABArchitecture........................................................................................................................15
2.2.1IAB-donor..........................................................................................................................18
2.2.2 IAB-node...........................................................................................................................18
2.2.3 Backhaul Adaptation Protocol (BAP).................................................................................18
2.3 Use Cases and Deployment Considerations..............................................................................18
2.3.1 CellDensification...............................................................................................................19
2.3.2 Filling Coverage Holes.......................................................................................................19
2.3.3 Coverage extension along street or highway.................................................................... 20
2.3.4 Infrastructure on demand.................................................................................................20
2.3.5 Augmenting low-capacity indoor backhaul....................................................................... 21
2.4 IAB Resource Allocation Methodologies...................................................................................21
2.4.1 Radio Resource sharing between access andbackhaul..................................................... 21
2.4.2 Time Division Multiplexing (TDM).....................................................................................22
2.4.3 Frequency Division Multiplexing (FDM)............................................................................ 23
2.4.4 Spatial Division Multiplexing (SDM)..................................................................................24
2.4.5 FullDuplex.........................................................................................................................25
2.4.6 IAB performance evaluations............................................................................................26
2.5 IAB Topology Adaptation, Routing Management, andQoS Handling ....................................... 29
2.5.1 IAB Topology Adaptation, RoutingManagement.............................................................. 29
2.5.2 Quality of service (QoS) handling and BearerMapping..................................................... 33
2.6 Emerging/Future Technologies.................................................................................................34
2.6.1 Self interference Cancellation (SIC)algorithm................................................................... 34
2.6.2 Network coding for reliability and latency........................................................................ 36
3 Wireline Transport Technologies ......................................................................................................38
3.1 Hybrid fiber coaxial (HFC) and Low Latency XHaul(LLX) Wireline Technologies ....................... 38
3.1.1 Hybrid Fiber Coax (HFC) ....................................................................................................38
3.1.2Business Drivers for HFC Backhaul Deployments.............................................................. 40
3.1.3 Reducing Latency for 5G Backhaul on HFC........................................................................ 41
3.1.4 LLX SchedulerPipelining....................................................................................................42
3.1.5 LLX Common QoS Framework...........................................................................................44
3.1.6 LLX Performance...............................................................................................................46
3.1.7 Synchronization over HFC.................................................................................................47
3.1.8 Next Steps.........................................................................................................................48
3.2 Passive Optical Networks..........................................................................................................48
3.2.1 Business Drivers for PON Backhaul Deployments............................................................. 49
3.2.2 GPON, XGPON, XGSPON, NGPON2 andBeyond................................................................ 49
3.2.3 EPON, 10G EPON,NG-EPON..............................................................................................51
3.2.4 Throughput DIMENSIONING.............................................................................................51
3.2.5 Latency..............................................................................................................................52
3.2.6Synchronization.................................................................................................................53
3.3 Ethernet....................................................................................................................................53
3.3.1 Introduction......................................................................................................................53
3.3.2 Radio Encapsulation Techniques.......................................................................................55
3.3.3 Time SensitiveNetworking................................................................................................56
3.4 Wavelength Division Multiplexing (WDM)................................................................................56
3.4.1 Introduction......................................................................................................................57
3.4.2 WDM Applications forXHaul.............................................................................................57
CONCLUSION .........................................................................................................................60
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发表于 2020-10-30 06:41:41