User guide

TD 92422GB
18 February 2010 / Ver. E
System Planning
Ascom IP-DECT System
Contents
1 Introduction............................................................................................................. 1
1.1 Abbreviations ..................................................................................................... 1
1.2 Glossary ............................................................................................................. 1
2 Wired LAN/Backbone Requirement ....................................................................... 3
2.1 End-to-End QoS ................................................................................................. 3
3 Base Station Planning............................................................................................. 4
4 Client’s Requirements ............................................................................................. 5
5 Traffic Capacity of the System................................................................................ 6
Example: .................................................................................................. 7
5.1 Traffic Capacity of the Base Stations ................................................................... 7
Example: .................................................................................................. 7
6 Base Station Coverage............................................................................................ 8
6.1 Architecture ....................................................................................................... 8
6.2 Building Elements .............................................................................................. 9
6.2.1 Walls ......................................................................................................... 9
6.2.2 Ceilings and Floors ..................................................................................... 9
6.2.3 Fire-resistant walls/doors .......................................................................... 10
6.3 Special Areas ................................................................................................... 10
6.3.1 Outdoors/car park .................................................................................... 10
6.3.2 Lift ........................................................................................................... 11
6.3.3 Stairwell ................................................................................................... 11
6.3.4 Toilet Rooms ............................................................................................ 11
6.3.5 Maintenance Shaft ................................................................................... 11
6.3.6 Basement and Indoor Car Park ................................................................. 11
6.4 Reflective Environment ..................................................................................... 12
6.4.1 Time Delay Spread ................................................................................... 12
6.4.2 How to Identify Reflective Environment .................................................... 13
6.4.3 Locations for Base Stations in Reflective Environment ............................... 13
6.4.4 Customer Acceptance .............................................................................. 13
7 Synchronization .................................................................................................... 14
7.1 Air Synchronization .......................................................................................... 14
7.2 Considerations for Air Synchronization at a Multiple Building Site .................... 14
7.2.1 In systems where handover is required between buildings ........................ 14
When there is good coverage between buildings .................................... 14
When there is poor coverage between buildings ..................................... 14