Concentric Cells Concept

[ninoy_122184]

1 INTRODUCTION............................................................................................................................4
2 GENERAL .....................................................................................................................................4
2.1 The Concentric Cells Concept .................................................................................................4
2.2 Reasons for the Introduction of Concentric Cells ..................................................................5
2.3 Definition of Concentric Cells ..................................................................................................5
3 PERFORMANCE OF CONCENTRIC CELLS ................................................................................6
3.1 Traffic Capacity.........................................................................................................................6
3.2 Frequency Re-use and C/I ........................................................................................................9
3.3 Handovers in Concentric Cells ..............................................................................................10
4 FIELD TRIAL SCENARIO NANJING ...........................................................................................11
4.1 Requirements of Jiangsu PTA ...............................................................................................11
4.2 Design......................................................................................................................................12
4.3 Main Activities (Work Flow) ....................................................................................................13
5 MEASUREMENTS.......................................................................................................................13
5.1 Measurements before the introduction of the Concentric Cell Feature..............................14
5.1.1 Traffic on Normal Cell...................................................................................................................... 14
5.1.2 Congestion rate for Normal Cells ..................................................................................................... 14
5.2 Measurements after the introduction of the Concentric Cell Feature .................................15
5.2.1 Traffic on Concentric Cells............................................................................................................... 15
5.2.2 Congestion rate for Concentric Cells................................................................................................ 16
5.2.3 Traffic on Inner Zone ....................................................................................................................... 16
5.3 Comparison of the results......................................................................................................17
5.3.1 Call Drop Rate (CDR) ...................................................................................................................... 17
5.3.2 Intracell Handover Success Rate ..................................................................................................... 18
5.3.3 Outgoing / Incoming Handover Success Rate.................................................................................. 19
5.3.4 UL/DL-RXQuality ............................................................................................................................. 20
5.3.5 Call Success Rate (CSR)................................................................................................................. 21
5.3.6 Congestion Rate .............................................................................................................................. 22
5.3.7 Field Measurements ........................................................................................................................ 22
6 SUMMARY...................................................................................................................................23

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