Chapter 3: The Cellular Concept – System Design Fundamentals Wireless Communications Principles and Practice 2nd Edition T.S. Rappaport Chapter 3: The Cellular Concept – System Design Fundamentals

The Cellular Concept

19-cell reuse example (N=19) Fig. 3.2 Figure 3.2 Method of locating co-channel cells in a cellular system. In this example, N = 19 (i.e., I = 3, j = 2). (Adapted from [Oet83] © IEEE.)

Handoffs – the basics

Umbrella Cells

Smaller N is greater capacity

Co-channel cells for 7-cell reuse Click for Description of Frequency Reuse Concept Click for Description of Frequency Reuse Concept Fig. 2.4

AMPS Duopoly Channels Fig. 2.5

Key Definitions for Trunked Radio Fig. 2.6

Erlang B Trunking GOS Fig. 2.7

Erlang B click for definition of Erlang Fig. 2.8

Erlang C Fig. 2.9

Cells are split to add channels with no new spectrum usage Fig. 2.10

Cell Splitting increases capacity Fig. 2.11

Sectoring improves S/I Fig. 2.12

Sectoring improves S/I Fig. 2.13

In-building deployment is the next great growth phase Fig. 2.14

The Zone Cell Concept Fig. 2.15

Zone Cell Concept Fig. 2.16