The Fundamentals of Cellular Concept and System Design Wireless Communications 06-88-440-01 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
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The Fundamentals of Cellular Concept and System Design
Wireless Communications 06-88-440-01
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 ZhuangWireless Communications: Principles and Practice, Theodore S. Rappaport
Single Cell
K Channels = K simultaneous UsersCapacity=K
BS
Pr
Pt
d
P r=PtG /dK
M Small CellsCapacity= M x K
Interference if all cells use same set of frequencies
R
R
R
1 2
3
Which cell to use?
Single Cell
Single Cell with K channels Cluster 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
D=R3N
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
Sectoring improves S/I
In-building deployment is the next great growth phase
The Zone Cell Concept
Zone Cell Concept
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