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Technical White Paper

ProviBand Next GenerationWireless Backhaul Technology

Ran Soffer

January 2006

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Introduction......................................................................................................................... 3

Access Network Topologies and Evolution........................................................................ 4

Cellular Network Evolution................................................................................................ 5Wireless Backhaul (Wireless PTP Links)........................................................................... 6

Class of Availability (CoA) ................................................................................................ 7ProviBand Technology ....................................................................................................... 9

Case Study .......................................................................................................................... 9

Summary........................................................................................................................... 11

Appendix: Cellular Network Topologies.......................................................................... 12

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Introduction

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Traditional Next Generation

Protocols Synchronous TDM traffic(e.g., E1/T1,

SONET/SDH)

Mixed TDM and packettraffic

Classes of availability Single CoA (voice

channels)

Multiple CoA (voice, Web

browsing, text massages,

VoD, etc.)Capacities Low capacity

Symmetric servicesHigh capacityAsymmetric services

(requires higher

downstream than upstream)

Rates Fixed rate

Symmetric bandwidth

Dynamic rate adaptation

using ACM techniqueAsymmetric bandwidth

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ProviBand Technology,*2,!!

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