The Fundamentals of Cellular Concept and System Design Wireless Communications These slides contains copyrighted materials from Prentice Hall Inc.. These figures are provided as instructor resources, and sources of these figures are: Wireless Communications and Networking, Jon W. Mark, Weihua Zhuang Wireless Communications: Principles and Practice, Theodore S. Rappaport

Single Cell K Channels = K simultaneous Users Capacity=K BS Pr Pt d

M Small Cells Capacity= M x K

Interference if all cells use same set of frequencies R R R Which cell to use?

Single Cell Single Cell with K channelsCluster N cells, with Each cell J = K / N channels

Cellular Concept

19-cell reuse example (N=19)

Handoffs – the basics

Umbrella Cells

Smaller N is greater capacity

Co-channel cells for 7-cell reuse

Key Definitions for Trunked Radio

Erlang B Trunking GOS

Erlang B

Erlang C

Cells are split to add channels with no new spectrum usage

Cell Splitting increases capacity

Sectoring improves S/I

In-building deployment is the next great growth phase

The Zone Cell Concept

Zone Cell Concept