Content for TR 37.803 Word version: 11.2.0
2 References
3 Definitions, symbols and abbreviations
4 Existing Mobility Functionality
5 Use cases and Requirements for enhanced mobility
6 Enhanced Mobility: description and analysis of the different architectural options
7 Conclusions and Recommendations
$ Change history
2 References
3 Definitions, symbols and abbreviations Word‑p. 8
4 Existing Mobility Functionality
4.1 UMTS
4.1.1 Mobility Functions supported
4.1.2 Architecture Word‑p. 9
4.1.3 Assumption Baseline Word‑p. 10
4.2 LTE
4.2.1 Mobility Functions supported
4.2.2 Architecture Word‑p. 11
4.2.3 Assumption Baseline Word‑p. 13
5 Use cases and Requirements for enhanced mobility Word‑p. 14
6 Enhanced Mobility: description and analysis of the different architectural options
6.1 UMTS architectural topics
6.1.1 Enhanced Mobility in CELL_FACH, CELL_PCH and URA_PCH Word‑p. 17
6.1.1.1 Problems to be solved.
6.1.1.1.1 CELL_FACH mobility Support for CSG-capable UEs
6.1.1.1.2 Target HNB acquiring the UE context from the source HNB.
6.1.1.1.3 Support for mixed HNB releases. Word‑p. 18
6.1.1.2 Possible solutions
6.1.1.2.1 CELL_FACH mobility Support for CSG-capable UEs
6.1.1.2.1.2 Measuring of inter-frequency CSG cells in CELL_FACH state
6.1.1.2.1.3 System Information Block reading of target CSG cell(s) in CELL_FACH state Word‑p. 19
6.1.1.2.2 Target acquiring UE context from the source HNB Word‑p. 20
6.1.1.2.3 Support for mixed HNB releases Word‑p. 39
6.1.1.3 Comparison of solutions Word‑p. 40
6.1.1.3.1 Narrative summary of solutions advantages/disadvantages
6.1.1.3.3 Comparison Table Word‑p. 43
6.1.1.4 Agreed Way Forward Word‑p. 44
6.1.2 Enhanced Mobility with macro network
6.1.2.1 Macro to Open HNB Enhanced Hard Handover Mobility
6.1.2.1.1 Problem Definition
6.1.2.1.2 Possible Solutions Word‑p. 45
6.1.2.1.3 Agreed Way Forward Word‑p. 46
6.1.2.2 Macro to Hybrid HNB Enhanced Hard Handover Mobility
6.1.2.2.1 Problem Definition
6.1.2.2.2 Possible Solutions Word‑p. 47
6.1.2.2.3 Solutions Comparison Word‑p. 55
6.1.2.2.4 Agreed Way Forward Word‑p. 57
6.1.2.3 SHO between HNB and Macro Word‑p. 58
6.1.2.3.1 HNB to Macro Soft Handover Word‑p. 59
6.1.2.3.2 Macro to Open HNB Soft Handover Word‑p. 61
6.1.2.3.3 Macro to Hybrid HNB Soft Handover Word‑p. 62
6.1.2.3.3.2 Possible Solutions Word‑p. 63
6.1.2.3.4 Evaluation Word‑p. 64
6.1.3 Legacy UE mobility
6.1.3.1 Problem Statement
6.1.3.2 Scope Word‑p. 67
6.1.3.2.1 Use case scenario
6.1.3.2.2 Hybrid and Open HNBs
6.1.3.2.3 CSG HNBs
6.1.3.2.4 Status Quo Word‑p. 68
6.1.3.3 Options
6.1.3.3.1 Option 1: Disambiguation at HNB-GW
6.1.3.3.1.1 -
6.1.3.3.1.2 Option 1b: Disambiguation at HNB-GW based on UL detection at HNB sub-system(UE UL PSC/UE UL DPCCH/target PSC)
6.1.3.3.1.3 Option 1c: Disambiguation at HNB-GW(UE UL detection + ΔOTD Filtering)
6.1.3.3.2 Option 2: Disambiguation at Serving RNC Word‑p. 72
6.1.3.4 Discussion
6.2 LTE architectural topics Word‑p. 81
6.2.1 Void
6.2.2 Enhanced Mobility with macro network
6.2.3 Support of X2 via GW proxy Word‑p. 86
6.2.3.1 Problem Statement
6.2.3.2 Full X2-Proxy
6.2.3.2.1 Full X2-Proxy definition
6.2.3.2.2 Logical architecture
6.2.3.2.3 Detailed call flows Word‑p. 87
6.2.3.2.4 Handling X2 procedures in X2-proxy Word‑p. 88
6.2.3.2.5 Impact to eNB/HeNB Word‑p. 90
6.2.3.2.6 Possible spec changes
6.2.3.2.7 Comparison Word‑p. 91
6.2.3.2.8 Open issues
6.2.3.3 X2 Routing Proxy Alternative Word‑p. 101
6.2.3.3.1 X2 Setup Word‑p. 102
6.2.3.3.2 Other X2 procedures Word‑p. 104
6.2.3.3.3 Summary
6.2.3.3.4 Open Issues Word‑p. 105
6.2.3.4 Support of X2 via an SCTP Concentrator
6.3 Inter-CSG Mobility
6.4 RAN Sharing
7 Conclusions and Recommendations
7.1 UMTS topics
7.2 LTE Topics Word‑p. 115
$ Change history Word‑p. 116
