Content for TR 36.839 Word version: 11.1.0
2 References
3 Definitions, symbols and abbreviations
4 General
5 HetNet mobility performance evaluation
6 Strategies for improved small cell discovery/identification
7 Automatic Re-establishment procedures for mobility robustness
8 Mobility enhancements for Multi-Carrier (including CA) in HeNBs with potentially different CSGs
9 Overall observations from the study on HetNet mobility
A Detailed evaluation results on potential enhancements for inter-frequency small cell measurements
$ Change history
2 References
3 Definitions, symbols and abbreviations Word‑p. 6
4 General
5 HetNet mobility performance evaluation
5.1 Simulation study phases
5.2 General Simulation assumptions Word‑p. 8
5.2.1 Handover Failure Modelling
5.2.1.1 Definition of Handover states
5.2.1.2 RLF modelling and definition of RLF states
5.2.1.3 Handover/PDCCH failure modelling
5.2.2 Ping-pong Modelling Word‑p. 11
5.2.3 Typical Radio Parameter Configurations Word‑p. 12
5.2.4 HetNet mobility specific parameters Word‑p. 13
5.2.5 Modelling of additional features Word‑p. 14
5.3 Specific assumptions for Hotspot simulation
5.3.1 UE Placement and Trajectories for hotspot simulation
5.3.2 Additional Simulation assumptions for Hotspot calibration Word‑p. 15
5.4 Additional assumptions for large area system simulations
5.4.1 Improved HO failure and RLF modelling
5.4.2 Handover performance metrics for HetNet large area evaluation Word‑p. 16
5.4.3 The Definition of Short-ToS Rate Word‑p. 17
5.4.4 UE Placement and Trajectories and cell placement for large area simulation
5.4.5 Additional Simulation assumptions for Large area calibration Word‑p. 18
5.5 Simulation results Word‑p. 19
5.5.1 Hotspot calibration
5.5.1.1 RLF results discussion
5.5.1.2 HO failures results discussion Word‑p. 21
5.5.1.3 Ping-pong results discussion Word‑p. 23
5.5.2 Large area calibration
5.5.2.1 RLF performance for HetNet and legacy systems Word‑p. 24
5.5.2.2 Handover failure performance for HetNet and legacy systems Word‑p. 25
5.5.2.3 Short Time of Stay performance Word‑p. 26
5.5.3 Overall observations from calibration simulations Word‑p. 28
5.5.4 Multiple picocell deployments
5.5.4.1 Multiple picocell deployment under full system load
5.5.4.1.1 Observations from Multiple picocell deployment simulations under full system load Word‑p. 30
5.5.4.2 Multiple picocell deployment under constant system load
5.5.5 Performance with DRX
5.5.5.1 Simulation study for Handover and RLF performance with DRX for HetNet relative to macro only systems
5.5.5.1.1 Simulation assumptions and definitions
5.5.5.1.2 Simulation results with DRX for HetNet relative to macro only systems Word‑p. 31
5.5.5.2 Simulation study for Handover and RLF performance with DRX for different HO types in HetNet Word‑p. 33
5.5.5.2.1 Simulation assumptions and definitions
5.5.5.2.2 Simulation results with DRX for different HO types in HetNet Word‑p. 36
5.5.5.3 Overall observations on Handover performance in HetNet with DRX Word‑p. 38
5.5.6 Performance with eICIC
5.6 Performance benefits of enhanced UE mobility state estimation
6 Strategies for improved small cell discovery/identification
6.1 Deployment scenarios
6.2 Objectives for inter-frequency small cell measurements Word‑p. 45
6.3 Analysis of existing inter-frequency measurements
6.4 Potential enhancements for improved small cell discovery/identification Word‑p. 46
6.4.1 Solution 1: Longer measurement period [20]
6.4.3 Solution 9: UE MSE based measurements [21,32]
6.4.4 Solution 10: Small cell signal based control of measurements [22]
6.4.5 Solution 4: Measurements without gap assistance [23]
6.4.6 Solution 2: Small cell discovery signal in macro layer [24]
6.4.7 Solution 6: UE based proximity detection [25, 33]
6.4.8 Solution 5/ 7: Proximity detection based on macro/pico cell listening [26, 27]
6.4.9 Solution 8: Proximity detection with broadcast assistance [28, 33] Word‑p. 47
6.5 Evaluation results
7 Automatic Re-establishment procedures for mobility robustness Word‑p. 48
8 Mobility enhancements for Multi-Carrier (including CA) in HeNBs with potentially different CSGs
9 Overall observations from the study on HetNet mobility
A Detailed evaluation results on potential enhancements for inter-frequency small cell measurements Word‑p. 50
$ Change history Word‑p. 53
