RF Frequency Planning Document - Excellent Description

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CONTENTS

1. INTRODUCTION..........................................................................................................................5

1.1 G

ENERAL DESCRIPTION OF FREQUENCY HOPPING...........................................................................51.2 FREQUENCY HOPPING MODES ........................................................................................................61.3 CELL ALLOCATION ........................................................................................................................81.4 MOBILE ALLOCATION ....................................................................................................................91.5 HOPPING SEQUENCE NUMBER ........................................................................................................91.6 MOBILE ALLOCATION INDEX OFFSET .............................................................................................91.7 MAIO STEP................................................................................................................................10

2. THEORETICAL PERFORMANCE OF FREQUENCY HOPPING.........................................11

2.1 F

REQUENCY DIVERSITY ...............................................................................................................11

2.1.1 Coherence Bandwidth..........................................................................................................112.1.2 Effect of Interleaving ...........................................................................................................132.1.3 Cyclic vs. Random Hopping Sequences................................................................................142.1.4 Simulated Frequency Diversity Gains..................................................................................142.1.5 Effect in Cell Coverage Area ...............................................................................................162.1.6 Effect of Mobile Speed.........................................................................................................16

2.2 I

NTERFERENCE DIVERSITY ...........................................................................................................162.3 EFFECT OF POWER CONTROL AND DTX........................................................................................18

3. NOKIA’S SUPPORT FOR FREQUENCY HOPPING IN GSM................................................20

3.1 BSS L

EVEL IMPLEMENTATION .....................................................................................................203.2 THE 2ND GENERATION BASE STATION..........................................................................................203.3 TALK FAMILY BASE STATION.......................................................................................................213.4 PRIMESITE..................................................................................................................................223.5 BASE STATION CONTROLLER........................................................................................................233.6 NPS/X........................................................................................................................................233.7 MAXIMUM CONFIGURATIONS .......................................................................................................233.8 RADIO NETWORK FAULT MANAGEMENT ......................................................................................24

3.8.1 The 2nd Generation Base Station.........................................................................................253.8.2 Talk Family Base Stations and PrimeSite ............................................................................25

3.9 R

ESTRICTIONS ON THE USAGE OF FH............................................................................................25

3.9.1 DL Power Control with BB FH............................................................................................253.9.2 Downlink DTX.....................................................................................................................263.9.3 Extended Range Cell (DE34/DF34/DG35) ..........................................................................263.9.4 MS Speed Detection.............................................................................................................263.9.5 Half Rate............................................................................................................................263.9.6 Frequency Sharing ..............................................................................................................263.9.7 RTC Combiner ....................................................................................................................263.9.8 NPS/X.................................................................................................................................26

4. SELECTING THE RIGHT HOPPING STRATEGY.................................................................275. FREQUENCY PLANNING OF FREQUENCY HOPPING NETWORKS ...............................29

5.1 NETWORK PLANNING PROCEDURE................................................................................................29

5.2 F

REQUENCY PLANNING PROCEDURE WITH NPS/X ........................................................................305.3 FREQUENCY REUSE ON FREQUENCY HOPPING NETWORK ..............................................................33

5.3.1 Effective Reuse ....................................................................................................................345.3.2 Frequency Allocation Reuse (RF FH only) ..........................................................................34

5.4 L

OAD ON NETWORKS UTILISING FRACTIONAL LOADING (RF FH ONLY) ........................................35

5.4.1 Frequency Load...................................................................................................................355.4.2 Hard Blocking Load ............................................................................................................365.4.3 Fractional Load...................................................................................................................37

5.5 T

RUNKING EFFECT AND EFFECTIVE REUSE ...................................................................................385.6 FREQUENCY ALLOCATION STRATEGIES ........................................................................................40

5.6.1 BCCH Allocation.................................................................................................................405.6.2 Selecting the Effective Reuse (BB FH) .................................................................................435.6.3 Selecting the Frequency Allocation Reuse and the Frequency Load (RF FH).......................445.6.4 Frequency Sharing by Using MAIO Management (RF FH only) ..........................................465.6.5 Frequency Sharing in the Single MA-list Scheme (RF FH only) ...........................................50

6. RADIO NETWORK PARAMETERS .........................................................................................52

6.1 P

ARAMETERS FOR MA-LIST DEFINITIONS IN BSC .........................................................................526.2 BTS LEVEL FH RELATED PARAMETERS .......................................................................................546.3 POWER CONTROL........................................................................................................................566.4 HANDOVER.................................................................................................................................586.5 DTX...........................................................................................................................................59

6.5.1 Uplink DTX .........................................................................................................................596.5.2 Downlink DTX.....................................................................................................................59

7. OPTIMISATION.........................................................................................................................60

7.1 T

OOLS FOR NETWORK MONITORING.............................................................................................607.2 KPIS FOR HOPPING NETWORK......................................................................................................607.3 RXQUAL IN FH NETWORKS .......................................................................................................617.4 IDLE CHANNEL INTERFERENCE MEASUREMENT ............................................................................657.5 CYCLIC AND RANDOM HOPPING SEQUENCES ................................................................................667.6 INTRACELL HANDOVER................................................................................................................697.7 POWER CONTROL........................................................................................................................69

7.7.1 Downlink Power Control with BB Hopping .........................................................................70

7.8 H

ANDOVER CONTROL ..................................................................................................................707.9 HSN PLANNING WITH RANDOM HOPPING.....................................................................................70

8. PLANNING CASES .....................................................................................................................71

8.1 P

LANNING CASE 1: SINGLE MA-LIST............................................................................................71

8.1.1 Frequency Planning ............................................................................................................718.1.2 MAIO Planning ...................................................................................................................72

8.2 P

LANNING CASE 2: RF FH WITH FRACTIONAL LOADING (FAR 3 – 5) ...........................................75

8.2.1 Defining the Frequency Band and the Number of Frequencies Needed in Each Cell ............758.2.2 Frequency Allocation and Analysis......................................................................................77

8.3 P

LANNING CASE 3: RF FH WITH FREQUENCY SHARING................................................................78

8.3.1 Frequency Planning ............................................................................................................788.3.2 MAIO Planning ...................................................................................................................79

8.3.3 Analysis..............................................................................................................................80