GTI 5G Whitepaper Multiple Operators Coexistence in the Same 5G FrequencyBands

1 Introduction 5

1.1 Background 6

1.2 Objectives of this white paper 6

1.3 Terminology 6

2 Frequency Arrangement potential for multiple operator coexistence in 5G frequency bands 9

2.1 Frequency Arrangement 5G 9

2.2 Challenges of coexistence 11

3 Sharing study for Multiple Operator Coexistence Scenarios 11

3.1 Interference Scenarios 11

3.2 Coexistence study for unsyncronized operation of two Macro BS 13

3.3 Coexistence study for unsynchronized operation for Micro BS and Macro BS 14

3.3.1 Impact on Micro BS network from Marco BS network 14

3.3.2 Impact on Marco BS network from Micro BS network 17

3.4 Coexistence study for unsynchronised Indoor BS and Macro BS 20

3.5 Semi-synchronised Operator Networks 24

3.6 UE-to-UE Co-existence 27

4 Technical Requirement for multiple operator coexistence scenarios 30

4.1 Technical Requirements for Synchronized Networks 30

4.2 Technical Requirement of unsynchronized network 35

4.2.1 Guardband Requirement for Unsynchronized Operation 36

4.2.2 Networks Geographic Separation 37

4.2.2.1 Proposed methodology 37

4.2.2.2 Summary of the studies 39

4.2.2.3 Conclusions from studies 40

4.2.3 Co-existence Between Unsynchronized Micro and Macro BS Deployments 40

4.2.3.1 Coexistence between unsynchronised Micro BSs and Macro BSs – Study #1 40

4.2.3.2 Coexistence between unsynchronised Micro BSs and Macro BSs – Study #2 41

4.2.4 Co-existence Between Unsynchronized Indoor BS and Macro BS 43

4.3 Technical Requirement for semi-synchronized network 43

5 Solution Options for Multiple Operator Network Coexistence 44

5.1 Case of Synchronisation operation 47

5.2 Case of Unsynchronisation operation 48

5.3 Case of Semi-synchronisation operation 50

5.4 Options for administrations 51

5.5 Cross-Boader Operation 52

5.6 Common configuration for LTE-TDD and 5G-NR synchronization operation 53

5.7 Inter-Operator Synchronization Example 53

6 Synchronization Framework 54

6.1 Synchronization Requirement 54

6.2 Technical Solutions for Network Synchronization 55

7 Recommendations 58