01. Introduction

01. Introduction - 1 Introduction Communication Networks...

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Unformatted text preview: 1 Introduction Communication Networks Kang Xi, Polytechnic Institute of NYU 2 Outline Objective Architecture Classification Circuit switching Packet switching Communication Networks Kang Xi, Polytechnic Institute of NYU 3 What for Information: one place another place Commun. network: transportation platform Data network: packets. Communication Networks Kang Xi, Polytechnic Institute of NYU 4 Design requirements Cost-effective Easy to manage Resilient High-speed Scalable .. Communication Networks Kang Xi, Polytechnic Institute of NYU 5 Simple example Basic requirement: connectivity The simplest solution: fully-connected net. Communication Networks Kang Xi, Polytechnic Institute of NYU 6 Fully-connected: pro and cons Pro: High Performance Cons: Too many links (how many?) Complexity Cost Scalability Communication Networks Kang Xi, Polytechnic Institute of NYU 7 General Architecture Intermediate nodes: signal relay End-to-End: multi-hop transportation C E A B D 3 1 5 4 2 Star Ring Mesh Communication Networks Kang Xi, Polytechnic Institute of NYU 8 Hierarchical Architecture Communication Networks Kang Xi, Polytechnic Institute of NYU 9 Classification Coverage: Wide area network (WAN) Metropolitan area network (MAN) Local area network (LAN) Switching technology: Circuit switching Packet switching Communication Networks Kang Xi, Polytechnic Institute of NYU 10 WAN, MAN & LAN WAN: Long distance High reliability LAN: Cost-sensitive High speed MAN: emerging requirement, ~300km Requirements between LAN & WAN Communication Networks...
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01. Introduction - 1 Introduction Communication Networks...

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