CONTENTS

1 Introduction
1.1 Introduction and outline
1.2 Scope
1.3 Summary
2 Assumptions
2.1 Radio interface technologies considered
2.2 Interference scenarios
2.3 Involved cell layers
2.3.1 Frequency allocation
2.3.2 Deployment scenarios and BS position
2.4 Transmitter characteristics
2.4.1 Output power and antenna gain
2.4.2 Spectrum masks and adjacent channel leakage ratio (ACLR) values
2.5 Receiver characteristics
2.5.1 Receiver noise floor and antenna gain (FDD and TDD)
2.5.2 Receiver sensitivity
2.5.3 Adjacent channel selectivity (ACS) specifications
2.6 Resulting adjacent channel interference ratios (ACIRs)
2.7 The practical gain of antennas of the interfering station and the victim
Reference separation distance
2.8 Relation between acceptable BS degradation and additional interference to the BS
2.8.1 Definitions and basic relations
2.8.2 Impact on the BS density for a given user population
2.8.3 Impact on the system capacity with a given cell plan
2.8.4 Acceptable levels of degradation
2.8.5 Reference separation distances
3 Interference evaluation methodologies
3.1 Propagation models
Path loss model for vehicular test environment
Path loss model for outdoor to indoor test environment
Path loss model for pedestrian test environment
Path loss model for indoor test environment
Dual-slope LoS propagation
3.2 Deterministic calculations
3.2.1 BS-to-BS interference
3.2.2 BS-BS interference, alternative evaluation
3.3 Monte Carlo simulation
3.3.1 Capacity consequences of MS-BS, BS-MS, MS-MS interference in FDD macro/ 3.84 Mchip/s TDD micro scenarios
Environment and propagation models
Performance measures
3.3.2 Consequences of MS-BS and MS-MS interference in FDD/3.84 Mchips/s TDD, FDD/1.28 Mchip/s TDD scenarios
3.3.3 Outage consequences due to MS-MS interference in FDD/3.84 Mchip/s TDD scenarios
3.4 MS-MS (deterministic)
4 Calculation examples and results
4.1 Calculation examples
4.2 Calculation results
4.2.1 Results from deterministic BS-BS interference calculation
4.2.2 Results from Monte Carlo simulations
FDD macro TDD micro
FDD micro TDD micro
Further studies
4.2.3 Results from deterministic MS-to-MS interference calculations
5 Conclusions
BS-BS: General observations
BS-BS in proximity: WCDMA/3.84 Mchip/s TDD (see 4.2.1.1)
BS-BS in proximity: WCDMA/1.28 Mchip/s TDD (see 4.2.1.3)
BS-BS co-location: WCDMA/3.84 Mchip/s (see 4.2.1.4)
Solution proposals for BS-BS interference
MS-BS, BS-MS interference
MS-MS interference
Appendix 1 ACLR, ACS and ACIR
Appendix 2 Derivation of the dual-slope LoS propagation model
Appendix 3 Practical antenna gain of antennas of the interfering station and the victim
1 Sum of the maximum gains of antennas of the interfering station and the victim
2 Sum of the gains of antennas at the directions of the interfering station and the victim (vertical antenna pattern defined by the 3 dB and 10 dB angle)
3 Sum of the gains of antennas at the directions of the interfering station and the victim (vertical antenna pattern modelled with Recommendation ITU-R F.1336)
Antenna patterns (macro and micro cells)
Resulting antenna gains
BS characteristics