Content for TR 37.852 Word version: 12.0.0
2 References
3 Definitions and abbreviations
4 General
5 Requirements
6 Target Scenarios for Enhancements
7 Enhanced Interworking: description and comparison of the different options
8 Conclusions
A Evaluation of current load balancing mechanisms
$ Change History
2 References p. 6
3 Definitions and abbreviations p. 6
3.1 Definitions p. 6
3.2 Abbreviations p. 6
4 General p. 7
5 Requirements p. 7
6 Target Scenarios for Enhancements p. 7
7 Enhanced Interworking: description and comparison of the different options p. 9
7.1 Inter-RAT Load Balancing p. 9
7.1.1 Cell Load Reporting Enhancement for Scenario 1a p. 9
7.1.1.1 Enhancement aspects p. 9
7.1.1.2 Solutions for UTRAN cell load reporting to E-UTRAN p. 10
7.1.1.2.1 Option1: Master eNB distributes UTRAN cell load response to slave eNBs p. 10
7.1.1.2.2 Option2: MME distributes UTRAN cell load response to the eNBs p. 11
7.1.1.2.3 Option3: eNB distributes UTRAN cell load response to other eNBs p. 12
7.1.1.3 Solutions for E-UTRAN cell load reporting to UTRAN p. 13
7.1.1.3.1 Option4: Master eNB aggregates EUTRAN cell load response of slave eNBs to RNC p. 13
7.1.1.3.2 Option5: MME aggregates EUTRAN cell load response of eNBs to RNC p. 14
7.1.1.4 Evaluation and comparisons p. 16
7.2 Inter-RAT Connected Mobility p. 18
7.2.1 Enhancement aspects p. 18
7.2.2 Solutions p. 18
7.2.3 Evaluation and comparisons p. 21
7.3 Inter-RAT Call Redirection p. 22
8 Conclusions p. 26
A Evaluation of current load balancing mechanisms p. 27
A.1 Introduction p. 27
A.1.1 Air interface modelling p. 27
A.1.2 Traffic model parameters p. 28
A.1.3 Offered load per carrier p. 28
A.1.4 Simulation modelling details p. 28
A.2 Performance Results p. 29
$ Change History p. 34
