Content for TR 45.912 Word version: 18.0.0
7 Dual-carrier and multi-carrier
7.1 Introduction
7.2 Concept description
7.3 Modelling assumptions and requirements
7.4 Performance characterization
7.5 Impacts to protocol architecture
7.6 Downlink Dual Carrier
7.7 Uplink Dual Carrier
7.8 Impacts to the BSS
7.9 Impacts to the Core Network
7.10 Radio network planning aspects
7.11 Impacts to the specifications
7.12 References
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7 Dual-carrier and multi-carrier p. 62
7.1 Introduction p. 62
7.2 Concept description p. 63
7.2.1 Basic concept p. 63
7.3 Modelling assumptions and requirements p. 63
7.4 Performance characterization p. 63
7.4.1 Peak data rates p. 63
7.4.2 Window size limited TCP throughput p. 64
7.4.3 Error-limited TCP throughput p. 64
7.4.3.1 Introduction p. 64
7.4.3.2 TCP modelling p. 65
7.4.3.3 Multi-carrier GERAN modelling p. 65
7.4.3.4 Results p. 65
7.5 Impacts to protocol architecture p. 66
7.5.1 Physical Layer p. 66
7.5.1.1 Modulation, multiplexing, and radio transmission p. 66
7.5.1.2 Channel coding p. 66
7.5.1.3 Mobile capabilities p. 66
7.5.1.4 Channel quality measurements p. 66
7.5.2 RLC/MAC p. 67
7.5.2.1 Multiplexing with legacy MSs p. 67
7.5.2.2 Multiplexing data on multiple carriers p. 67
7.5.2.2.1 Simultaneous transmission over multiple carriers p. 67
7.5.2.2.2 Time-divided transmission over multiple carriers p. 67
7.5.2.3 Segmentation / reassembly p. 67
7.5.2.4 RLC window size p. 67
7.5.2.5 Incremental redundancy p. 68
7.5.2.6 Link adaptation p. 68
7.5.2.7 Signalling p. 68
7.5.3 Higher layers p. 68
7.6 Downlink Dual Carrier p. 68
7.6.1 Overall throughput considerations for dual carrier on the downlink p. 68
7.6.2 Inter-carrier interleaving p. 69
7.6.3 Dual-carrier diversity p. 69
7.6.4 Adaptation between dual carrier and receive diversity p. 69
7.6.5 Impacts to the mobile station p. 69
7.6.5.1 Multiple narrowband receivers p. 69
7.6.5.2 Wideband receiver p. 70
7.6.5.2.1 Larger bandwidth p. 70
7.6.5.2.2 Channel separation p. 70
7.6.5.2.3 Blocking requirements p. 70
7.6.5.3 Baseband p. 71
7.7 Uplink Dual Carrier p. 72
7.7.1 Concept description for dual carrier on the uplink p. 72
7.7.2 Mobile Station Capabilities p. 72
7.7.3 Increase in Peak Data Rate p. 72
7.7.4 Decrease of Latency p. 72
7.7.5 Impact on Cell Coverage p. 72
7.7.6 Impacts to the mobile station p. 72
7.7.6.1 RF Architecture options p. 72
7.7.6.2 Evaluation of option A and option B (Taken from GP-060188) p. 73
7.7.6.2.1 Combining loss p. 73
7.7.6.2.2 Intermodulation (IM) p. 73
7.7.6.2.3 Decreased efficiency due to reduced output power p. 74
7.7.6.2.4 Peak power consumption p. 74
7.7.6.3 Evaluation of option B (Taken from GP-052723) p. 75
7.7.6.4 Evaluation of option C (Taken from GP-060609) p. 76
7.7.6.4.1 Concept Description p. 76
7.7.6.4.2 System Impacts p. 77
7.7.6.4.3 Output Power p. 77
7.7.6.4.4 Power Efficiency p. 77
7.7.6.4.5 Coverage p. 78
7.7.6.4.6 Frequency Planning, Frequency Hopping p. 78
7.7.6.4.7 Intermodulation Interference p. 78
7.7.6.5 Observations on the implementation options (Taken GP-060732) p. 78
7.7.7 Impact of reduced MS power p. 83
7.7.8 Modified Concept for Dual Carrier in the Uplink p. 86
7.7.8.1 Introduction p. 86
7.7.8.2 Modified Concept p. 87
7.7.8.3 Intermodulation measurements p. 88
7.7.8.3.1 Measurement setup p. 88
7.7.8.3.2 Analysis of IM3 measurements p. 90
7.7.8.3.3 Analysis of IM5 measurements p. 91
7.7.8.3.4 Analysis of IM2 p. 93
7.7.8.4 Dual carrier architecture with minimal single-carrier operation impact p. 93
7.7.9 Discussion on Uplink Coverage p. 96
7.7.9.1 Introduction p. 96
7.7.9.2 Assumptions for power reductions and power consumption p. 96
7.7.9.3 Receiver and Network model p. 96
7.7.9.4 Results p. 97
7.7.9.4.1 Cell border p. 97
7.7.9.4.2 Median coverage p. 97
7.7.10 Improvements for DTM and MBMS p. 98
7.7.10.1 Assumptions p. 98
7.7.10.2 Gains for DTM Multislot Capacity p. 99
7.7.10.3 CS Connection setup while in packet transfer mode p. 99
7.7.10.4 Gains for MBMS + CS p. 100
7.7.11 Performance enhancing features p. 101
7.8 Impacts to the BSS p. 103
7.9 Impacts to the Core Network p. 103
7.10 Radio network planning aspects p. 104
7.10.1 Analysis for Option C p. 104
7.10.1.1 Introduction p. 104
7.10.1.2 Legacy Frequency Planning p. 104
7.10.1.3 Impact of Wideband transmitter on legacy frequency planning p. 104
7.10.1.3.1 FLP-1/1 or 1/3 p. 104
7.10.1.3.2 MRP p. 106
7.10.1.4 Extended frequency allocation p. 107
7.10.1.4.1 Introduction p. 107
7.10.1.4.2 Description of Extended Frequency Allocation p. 107
7.10.1.4.3 Impact of EFA on the BTS p. 108
7.10.1.4.4 Separation of carriers p. 111
7.10.1.5 Evaluation of network performance p. 111
7.10.1.5.1 Setup p. 111
7.10.1.5.2 Results p. 112
7.11 Impacts to the specifications p. 112
7.12 References p. 113
