Content for TR 45.820 Word version: 13.1.0
6 Physical layer aspects and radio access protocols for concepts based on evolution of GSM radio technology
6.1 Overall description
6.2 Extended Coverage for GSM (EC-GSM)
6.2.1 General
6.2.2 Downlink physical layer design
6.2.3 Uplink physical layer design
6.2.4 Link layer aspects
6.2.5 Radio resource management
6.2.6 Concept evaluation
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6 Physical layer aspects and radio access protocols for concepts based on evolution of GSM radio technology p. 31
6.1 Overall description p. 31
6.2 Extended Coverage for GSM (EC-GSM) p. 32
6.2.1 General p. 32
6.2.1.1 Re-using existing design p. 32
6.2.1.2 Backwards compatibility and co-existence with GSM p. 32
6.2.1.3 Achieving extended coverage p. 32
6.2.1.4 Device capability p. 32
6.2.2 Downlink physical layer design p. 33
6.2.2.1 Basic transmission scheme p. 33
6.2.2.2 Physical layer procedure p. 35
6.2.2.2.1 Cell detection p. 35
6.2.2.2.2 Scheduling p. 37
6.2.2.2.3 Link Adaptation p. 37
6.2.2.2.4 Power Control p. 37
6.2.3 Uplink physical layer design p. 37
6.2.3.1 Basic transmission scheme p. 37
6.2.3.1.1 Re-using existing design p. 37
6.2.3.1.2 New packet control channel format. p. 37
6.2.3.1.3 Overlaid CDMA p. 38
6.2.3.2 Physical layer procedure p. 38
6.2.3.2.1 Random Access p. 38
6.2.3.2.2 Uplink scheduling p. 38
6.2.3.2.3 Link Adaptation p. 39
6.2.3.2.4 Power Control p. 39
6.2.4 Link layer aspects p. 39
6.2.4.1 Timing Advance p. 39
6.2.4.2 Mapping of logical channels onto physical channels p. 39
6.2.4.2.1 General p. 39
6.2.4.2.2 FCCH p. 39
6.2.4.2.3 EC-SCH p. 39
6.2.4.2.4 EC-BCCH p. 40
6.2.4.2.5 EC-PCH p. 40
6.2.4.2.6 EC-AGCH p. 41
6.2.4.2.7 EC-RACH p. 41
6.2.4.2.8 EC-PACCH p. 42
6.2.4.2.9 EC-PDTCH p. 43
6.2.4.2.10 Mapping table p. 43
6.2.4.3 Operation of channels and channel combinations p. 46
6.2.4.3.1 Paging Groups and Coverage Classes p. 46
6.2.4.3.2 Determination of PAGING_GROUP p. 46
6.2.4.3.2a Realizing Extended DRX Cycle Lengths p. 48
6.2.4.3.3 Reachability in EC-GSM Idle mode p. 48
6.2.4.3.4 Reachability in EC-GSM Extended Uplink TBF mode p. 49
6.2.4.4 Multiplexing/De-multiplexing principles p. 49
6.2.4.5 Retransmission schemes p. 50
6.2.4.6 Random Access Procedure p. 50
6.2.4.6.1 General p. 50
6.2.4.6.2 Burst types p. 50
6.2.4.6.3 Training Sequence Codes p. 51
6.2.4.6.4 Contention Resolution p. 52
6.2.4.6.5 System Access Procedure p. 52
6.2.4.6.6 Adjusting the Estimated Coverage Class p. 53
6.2.4.6.7 Overload Control p. 53
6.2.4.6.8 Enhanced AB Based Contention Resolution p. 54
6.2.4.7 Priority handling p. 56
6.2.4.8 Segmentation p. 56
6.2.4.8.1 Data p. 56
6.2.4.8.2 Control blocks p. 56
6.2.4.9 RLC procedures p. 56
6.2.5 Radio resource management p. 60
6.2.5.1 (EC-)CCCH mapping on TS0 and TS1 p. 60
6.2.5.2 MS states p. 61
6.2.5.3 System Information p. 61
6.2.5.4 Void
6.2.5.5 Radio Resource Management p. 62
6.2.5.6 EC-PACCH Message Set p. 63
6.2.5.6.0 General p. 63
6.2.5.6.1 EC Packet Access Reject - DL EC-PACCH p. 63
6.2.5.6.2 EC Packet Downlink Ack/Nack - UL EC-PACCH p. 63
6.2.5.6.3 EC Packet Upink Ack/Nack - DL EC-PACCH p. 64
6.2.5.6.4 EC Packet Control Ack - UL EC-PACCH p. 64
6.2.5.6.5 EC Packet Downlink Dummy Control Block - DL EC-PACCH p. 65
6.2.5.6.6 EC Packet Power Control/Timing Advance - DL EC-PACCH p. 65
6.2.5.6.7 EC Packet Downlink Assignment - DL EC-PACCH p. 65
6.2.5.6.8 EC Packet Uplink Assignment - DL EC-PACCH p. 66
6.2.5.7 Fixed Uplink Allocation p. 66
6.2.5.8 EC-AGCH Fixed Uplink Allocation 1 message p. 67
6.2.5.9 EC-AGCH Fixed Uplink Allocation 2 message p. 68
6.2.5.10 AGCH Fixed Uplink Allocation Assignment message p. 69
6.2.5.11 EC-AGCH Assignment Reject message p. 70
6.2.5.12 Flexible Downlink Allocation p. 71
6.2.5.13 EC-AGCH Downlink Allocation message p. 71
6.2.5.14 EC-PCH Paging Request message p. 72
6.2.5.15 EC-GSM Cell Selection and reselection p. 73
6.2.5.15.1 Idle mode p. 73
6.2.5.15.2 Packet transfer mode p. 74
6.2.5.16 DL signal level and coverage class estimation p. 74
6.2.6 Concept evaluation p. 75
6.2.6.1 Network synchronization p. 75
6.2.6.1.1 Simulation methodology p. 75
6.2.6.1.2 Receiver processing p. 76
6.2.6.1.3 Simulation assumptions p. 76
6.2.6.1.4 Simulation results p. 76
6.2.6.1.5 Conclusions p. 78
6.2.6.2 EC-RACH p. 79
6.2.6.3 Resource multiplexing p. 86
6.2.6.4 Sensitivity to frequency offset p. 87
6.2.6.5 Incremental redundancy and chase combining p. 88
6.2.6.6 EC-GSM Battery Lifetime Estimation p. 89
6.2.6.6.1 Deep Sleep p. 90
6.2.6.6.2 Network synchronization p. 90
6.2.6.6.3 Light Sleep p. 91
6.2.6.6.4 Random Access p. 92
6.2.6.6.5 Immediate Assignment p. 93
6.2.6.6.6 Data Transmission with HARQ retransmissions p. 93
6.2.6.6.7 Ready State p. 94
6.2.6.6.8 Battery lifetime with Device output power of 33 dBm p. 95
6.2.6.6.9 Battery lifetime with Device output power of 23 dBm p. 95
6.2.6.6.10 Battery lifetime with Device output power of 33 dBm using Access Burst p. 95
6.2.6.6.11 Battery lifetime with Device output power of 23 dBm using Access Burst p. 96
6.2.6.7 Overlaid CDMA p. 96
6.2.6.7.1 Simulation assumptions p. 96
6.2.6.7.2 Simulation results p. 96
6.2.6.7.3 Conclusions p. 99
6.2.6.8 DL signal level measurements on FCCH p. 99
6.2.6.8.0 General p. 99
6.2.6.8.1 Assumptions p. 100
6.2.6.8.2 Results p. 100
6.2.6.8.3 Conclusions p. 100
6.2.6.9 Coverage improvement target according to MCL methodology p. 101
6.2.6.10 Latency Analysis p. 103
6.2.6.11 Impact on GSM/EDGE BTS hardware p. 105
6.2.6.12 Device complexity evaluation p. 108
6.2.6.12.1 EC-GSM Device Architecture p. 108
6.2.6.12.2 Protocol Stack Evaluation p. 113
6.2.6.12.3 SoC Silicon Area and Technology Node p. 114
6.2.6.12.4 Power Amplifier p. 114
6.2.6.12.5 External Components apart from PA p. 115
6.2.6.12.6 Conclusion p. 115
6.2.6.13 System simulations for capacity and latency evaluation p. 116
6.2.6.13.1 System parameters p. 116
6.2.6.13.2 Coverage classes p. 116
6.2.6.13.3 Cell selection and coverage class estimation p. 117
6.2.6.13.4 Control signaling p. 117
6.2.6.13.5 Circuit switched users p. 117
6.2.6.13.6 Simulated scenarios p. 117
6.2.6.13.7 Failed attempts p. 118
6.2.6.13.8 Results p. 118
6.2.6.14 System capacity evaluation for software update/reconfiguration traffic p. 121
6.2.6.15 System Simulations for Capacity and Latency Evaluation (source 2) p. 122
6.2.6.15.1 Building Penetration Loss p. 122
6.2.6.15.2 Traffic Models Discussion p. 123
6.2.6.15.3 Downlink System Level Performance p. 123
6.2.6.15.4 Uplink System Level Performance p. 125
6.2.6.16 Co-existence simulations with GSM aggressor EC-GSM victim p. 127
6.2.6.17 Co-existence simulations with UTRA/E-UTRA aggressor EC-GSM victim p. 129
