ninoy_122184
2011-12-06, 09:15 PM
1 HISTORY................................................................................................................. 4
2 REFERENCES ........................................................................................................ 4
3 SCOPE .................................................................................................................... 4
4 UNDERSTANDING CONCENTRIC CELLS PRINCIPLES...................................... 5
4.1 Functionality .........................................................................................................................................5
4.1.1 Introduction ....................................................................................................................................5
4.1.2 Channel Setup .................................................................................................................................5
4.1.3 Interfered/Interfering .......................................................................................................................5
4.1.4 Handovers.......................................................................................................................................6
4.1.5 B4 evolution....................................................................................................................................8
5 EASY IMPLEMENTATION...................................................................................... 9
5.1 Default Parameters [5] .........................................................................................................................9
5.2 Manual Planning................................................................................................................................. 10
5.3 Using Frequency Allocation Tools...................................................................................................... 10
6 ADVANCED IMPLEMENTATION.......................................................................... 12
6.1 Taking Abis/Air Interface traces ....................................................................................................... 12
6.2 Choosing RxLev_DL_Zone................................................................................................................. 12
6.3 Choosing the Power Reduction of Inner Zone ................................................................................... 13
6.4 Assessing the Traffic Capacity ........................................................................................................... 13
6.5 Secured Implementation / Implementation without Abis Traces...................................................... 14
6.6 Number of TRX for Inner Zone......................................................................................................... 15
7 OPTIMISATION..................................................................................................... 16
8 FIELD RESULTS................................................................................................... 17
8.1 Reuse Cluster 4 ................................................................................................................................... 17
8.1.1 Tolerating on the inner zone 48% interference (*) from a neighbour BCCH .................................. 17
8.1.2 Large scale implementation of a Reuse Cluster 4 ........................................................................... 18
8.1.3 Implementing concentric cells to free up bandwidth for microcell introduction .............................. 21
8.2 Handovers ........................................................................................................................................... 22
8.2.1 Number of HO/Call....................................................................................................................... 22
8.2.2 BSC charge ................................................................................................................................... 22
8.2.3 Special Rules for Logical Parameters............................................................................................. 22
9 STRATEGY ........................................................................................................... 24
9.1 Bandwidth Splitting vs Not Splitting.................................................................................................. 24
9.2 Combination with Frequency Hopping.............................................................................................. 24
9.3 Downlink PowerControl..................................................................................................................... 25
9.4 Concentric cells and Microcell ......................................................................................................... 25
http://www.mediafire.com/file/bpsza6za7dbqega/Concentric%20Cell%20Implementation.pdf
2 REFERENCES ........................................................................................................ 4
3 SCOPE .................................................................................................................... 4
4 UNDERSTANDING CONCENTRIC CELLS PRINCIPLES...................................... 5
4.1 Functionality .........................................................................................................................................5
4.1.1 Introduction ....................................................................................................................................5
4.1.2 Channel Setup .................................................................................................................................5
4.1.3 Interfered/Interfering .......................................................................................................................5
4.1.4 Handovers.......................................................................................................................................6
4.1.5 B4 evolution....................................................................................................................................8
5 EASY IMPLEMENTATION...................................................................................... 9
5.1 Default Parameters [5] .........................................................................................................................9
5.2 Manual Planning................................................................................................................................. 10
5.3 Using Frequency Allocation Tools...................................................................................................... 10
6 ADVANCED IMPLEMENTATION.......................................................................... 12
6.1 Taking Abis/Air Interface traces ....................................................................................................... 12
6.2 Choosing RxLev_DL_Zone................................................................................................................. 12
6.3 Choosing the Power Reduction of Inner Zone ................................................................................... 13
6.4 Assessing the Traffic Capacity ........................................................................................................... 13
6.5 Secured Implementation / Implementation without Abis Traces...................................................... 14
6.6 Number of TRX for Inner Zone......................................................................................................... 15
7 OPTIMISATION..................................................................................................... 16
8 FIELD RESULTS................................................................................................... 17
8.1 Reuse Cluster 4 ................................................................................................................................... 17
8.1.1 Tolerating on the inner zone 48% interference (*) from a neighbour BCCH .................................. 17
8.1.2 Large scale implementation of a Reuse Cluster 4 ........................................................................... 18
8.1.3 Implementing concentric cells to free up bandwidth for microcell introduction .............................. 21
8.2 Handovers ........................................................................................................................................... 22
8.2.1 Number of HO/Call....................................................................................................................... 22
8.2.2 BSC charge ................................................................................................................................... 22
8.2.3 Special Rules for Logical Parameters............................................................................................. 22
9 STRATEGY ........................................................................................................... 24
9.1 Bandwidth Splitting vs Not Splitting.................................................................................................. 24
9.2 Combination with Frequency Hopping.............................................................................................. 24
9.3 Downlink PowerControl..................................................................................................................... 25
9.4 Concentric cells and Microcell ......................................................................................................... 25
http://www.mediafire.com/file/bpsza6za7dbqega/Concentric%20Cell%20Implementation.pdf