User's Manual

Wireless Array
ii
Notes and Cautions ........................................................................................ 21
Screen Images .................................................................................................. 21
Product Specifications ........................................................................................... 22
Installing the Wireless Array........................................................... 23
Installation Prerequisites ...................................................................................... 23
Optional Network Components ................................................................... 25
Client Requirements ....................................................................................... 25
Planning Your Installation .................................................................................... 26
General Deployment Considerations .......................................................... 26
Coverage and Capacity Planning ................................................................. 28
Placement .................................................................................................. 28
RF Patterns ................................................................................................ 29
Capacity and Cell Sizes ........................................................................... 30
Fine Tuning Cell Sizes ............................................................................. 31
Roaming Considerations ........................................................................ 32
Allocating Channels ................................................................................ 33
IEEE 802.11n Deployment Considerations ................................................. 35
MIMO (Multiple-In Multiple-Out) ........
..
.............................................. 36
Multiple Data Streams — Spatial Multiplexing .........
.......................... 38
Channel Bonding ..................................................................................... 39
Improved MAC Throughput ................................................................. 40
Short Guard Interval ............................................................................... 40
Obtaining Higher Data Rates ................................................................. 41
802.11n Capacity ...................................................................................... 42
Failover Planning ............................................................................................ 42
Switch Failover Protection ..................................................................... 44
Power Planning ............................................................................................... 45
Power over Gigabit Ethernet ................................................................. 45
Security Planning ............................................................................................ 46
Wireless Encryption ................................................................................ 46
Authentication ......................................................................................... 46
Port Requirements .......................................................................................... 48
Network Management Planning .................................................................. 52
WDS Planning ................................................................................................. 53
Common Deployment Options .................................................................... 56
Installation Workflow ........................................................................................... 57