1、 ETSI TR 145 912 V14.0.0 (2017-04) Digital cellular telecommunications system (Phase 2+) (GSM); Feasibility study for evolved GSM/EDGE Radio Access Network (GERAN) (3GPP TR 45.912 version 14.0.0 Release 14) TECHNICAL REPORT GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TR 145 912 V14.0.0 (2017-0
2、4)13GPP TR 45.912 version 14.0.0 Release 14Reference RTR/TSGR-0645912ve00 Keywords GSM ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-Prfecture de
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9、.0.0 (2017-04)23GPP TR 45.912 version 14.0.0 Release 14Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and
10、can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the E
11、TSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Forewo
12、rd This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the correspondin
13、g ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http:/webapp.etsi.org/key/queryform.asp. Modal verbs terminology In the present document “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“ are to be interpreted as
14、described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 145 912 V14.0.0 (2017-04)33GPP TR 45.912 version 14.0.0 Release 14Contents Intellectual Pro
15、perty Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 17g3Introduction 17g31 Scope 18g32 References 18g33 Abbreviations . 18g34 Objectives . 19g34.1 General . 19g34.2 Performance objectives 19g34.3 Compatibility objectives . 20g35 Conclusions and recommendations 21g35.1 Conclusions and
16、 recommendations for Downlink 23g35.2 Conclusions and recommendations for Uplink . 24g35.3 Conclusions and recommendations for Latency enhancements . 24g36 Mobile station receiver diversity 24g36.1 Introduction 24g36.2 Concept description 24g36.3 Modelling Assumptions and Requirements 24g36.3.1 Spat
17、ial Modelling 25g36.3.2 Single input - dual output channel model . 27g36.3.3 Multiple interferer model 28g36.3.4 Channel Model Parameters . 29g36.3.4.1 Measurement results on Antenna Correlation . 30g36.3.4.1.1 Indoor, Pedestrian Speed. No repeater 30g36.3.4.1.2 Indoor, Pedestrian Speed. With repeat
18、er . 31g36.3.4.1.3 Outdoor (highway) 32g36.3.4.2 Literature Survey . 33g36.3.4.2.1 Envelope correlation 33g36.3.4.2.2 Spatial diversity . 33g36.3.4.2.3 Polarization diversity . 34g36.3.4.2.4 Antenna pattern diversity. 34g36.3.4.2.5 Mean branch power imbalance 34g36.3.4.3 Results from measurements at
19、 Ericsson Research 34g36.3.4.3.1 Envelope correlation 34g36.3.4.3.2 Mean branch power imbalance 34g36.3.4.4 Results From Simulations . 35g36.3.4.4.1 Impact of branch correlation 35g36.3.4.4.2 Impact of branch power imbalance 35g36.3.4.4.3 Phase offset 36g36.3.4.4.4 Impact of Antenna correlation Fact
20、ors in desired and interfering branches . 39g36.3.4.5 Discussion . 41g36.3.4.6 Parameter Selection . 42g36.4 Performance Characterization 42g36.4.1 Link Level Performance . 42g36.4.1.1 SAIC GERAN Configurations 42g36.4.1.1.1 GMSK BER . 43g36.4.1.1.2 8-PSK BER 44g36.4.1.1.3 AMR FER 45g36.4.1.1.4 GPRS
21、 BLER 47g36.4.1.1.5 EGPRS BLER . 47g3ETSI ETSI TR 145 912 V14.0.0 (2017-04)43GPP TR 45.912 version 14.0.0 Release 146.4.1.1.6 EGPRS Throughput . 49g36.4.1.2 DARP Test Scenarios (DTS). 49g36.4.1.3 Sensitivity . 52g36.4.2 System level Performance 54g36.4.2.1 Voice Capacity 54g36.4.2.1.1 Link to System
22、 Mapping . 54g36.4.2.2 Mixed Voice and HTTP traffic . 56g36.5 Impacts to the Mobile Station. 60g36.6 Impacts to the BSS . 60g36.7 Impacts to the Core Network 60g36.8 Impacts to the Specification . 61g36.9 References 61g37 Dual-carrier and multi-carrier 62g37.1 Introduction 62g37.2 Concept descriptio
23、n 63g37.2.1 Basic concept 63g37.3 Modelling assumptions and requirements 63g37.4 Performance characterization . 63g37.4.1 Peak data rates 63g37.4.2 Window size limited TCP throughput 64g37.4.3 Error-limited TCP throughput. 64g37.4.3.1 Introduction . 64g37.4.3.2 TCP modelling 65g37.4.3.3 Multi-carrie
24、r GERAN modelling 65g37.4.3.4 Results . 65g37.5 Impacts to protocol architecture . 66g37.5.1 Physical Layer 66g37.5.1.1 Modulation, multiplexing, and radio transmission 66g37.5.1.2 Channel coding . 66g37.5.1.3 Mobile capabilities 66g37.5.1.4 Channel quality measurements 66g37.5.2 RLC/MAC 67g37.5.2.1
25、 Multiplexing with legacy MSs 67g37.5.2.2 Multiplexing data on multiple carriers 67g37.5.2.2.1 Simultaneous transmission over multiple carriers . 67g37.5.2.2.2 Time-divided transmission over multiple carriers . 67g37.5.2.3 Segmentation / reassembly 67g37.5.2.4 RLC window size 67g37.5.2.5 Incremental
26、 redundancy 68g37.5.2.6 Link adaptation . 68g37.5.2.7 Signalling 68g37.5.3 Higher layers . 68g37.6 Downlink Dual Carrier . 68g37.6.1 Overall throughput considerations for dual carrier on the downlink 68g37.6.2 Inter-carrier interleaving . 69g37.6.3 Dual-carrier diversity 69g37.6.4 Adaptation between
27、 dual carrier and receive diversity . 69g37.6.5 Impacts to the mobile station 69g37.6.5.1 Multiple narrowband receivers 69g37.6.5.2 Wideband receiver 70g37.6.5.2.1 Larger bandwidth. 70g37.6.5.2.2 Channel separation 70g37.6.5.2.3 Blocking requirements . 70g37.6.5.3 Baseband . 71g37.7 Uplink Dual Carr
28、ier 72g37.7.1 Concept description for dual carrier on the uplink 72g37.7.2 Mobile Station Capabilities 72g37.7.3 Increase in Peak Data Rate . 72g37.7.4 Decrease of Latency 72g37.7.5 Impact on Cell Coverage 72g37.7.6 Impacts to the mobile station 72g3ETSI ETSI TR 145 912 V14.0.0 (2017-04)53GPP TR 45.
29、912 version 14.0.0 Release 147.7.6.1 RF Architecture options 72g37.7.6.2 Evaluation of option A and option B (Taken from GP-060188) . 73g37.7.6.2.1 Combining loss 73g37.7.6.2.2 Intermodulation (IM) . 73g37.7.6.2.3 Decreased efficiency due to reduced output power . 74g37.7.6.2.4 Peak power consumptio
30、n . 74g37.7.6.3 Evaluation of option B (Taken from GP-052723) . 75g37.7.6.3.1 PA and battery considerations . 75g37.7.6.3.2 Antenna considerations . 76g37.7.6.4 Evaluation of option C (Taken from GP-060609) . 76g37.7.6.4.1 Concept Description 76g37.7.6.4.2 System Impacts 77g37.7.6.4.3 Output Power .
31、 77g37.7.6.4.4 Power Efficiency . 77g37.7.6.4.5 Coverage 78g37.7.6.4.6 Frequency Planning, Frequency Hopping . 78g37.7.6.4.7 Intermodulation Interference . 78g37.7.6.5 Observations on the implementation options (Taken GP-060732) . 78g37.7.6.5.1 Base Station Architecture Impact 81g37.7.6.5.2 Dual Car
32、rier Interleaving and Constrained Dual Carrier Uplink . 82g37.7.6.5.3 System Frequency Re-Use Impact. 82g37.7.7 Impact of reduced MS power 83g37.7.7.1 Introduction . 83g37.7.7.2 Simulation setup 83g37.7.7.2.1 Network . 83g37.7.7.2.2 Dual-carrier Deployment . 84g37.7.7.2.3 Backoff 84g37.7.7.3 Results
33、 . 85g37.7.7.3.1 Coverage limited network . 85g37.7.7.3.2 Interference limited network . 86g37.7.8 Modified Concept for Dual Carrier in the Uplink . 86g37.7.8.1 Introduction . 86g37.7.8.2 Modified Concept . 87g37.7.8.3 Intermodulation measurements . 88g37.7.8.3.1 Measurement setup 88g37.7.8.3.2 Anal
34、ysis of IM3 measurements . 90g37.7.8.3.3 Analysis of IM5 measurements . 91g37.7.8.3.4 Analysis of IM2 . 93g37.7.8.4 Dual carrier architecture with minimal single-carrier operation impact 93g37.7.8.4.1 Introduction . 93g37.7.8.4.2 TX architecture 93g37.7.8.4.3 Throughput in coverage limited scenario
35、94g37.7.9 Discussion on Uplink Coverage 96g37.7.9.1 Introduction . 96g37.7.9.2 Assumptions for power reductions and power consumption . 96g37.7.9.3 Receiver and Network model 96g37.7.9.4 Results . 97g37.7.9.4.1 Cell border . 97g37.7.9.4.2 Median coverage . 97g37.7.10 Improvements for DTM and MBMS 98
36、g37.7.10.1 Assumptions 98g37.7.10.2 Gains for DTM Multislot Capacity . 99g37.7.10.3 CS Connection setup while in packet transfer mode . 99g37.7.10.4 Gains for MBMS + CS 100g37.7.11 Performance enhancing features . 101g37.7.11.1 Intercarrier Interleaving 101g37.7.11.1.1 Introduction . 101g37.7.11.1.2
37、 Link level gains by intercarrier interleaving 102g37.7.11.2 Advanced Coding Schemes . 103g37.8 Impacts to the BSS . 103g37.9 Impacts to the Core Network 103g37.10 Radio network planning aspects . 104g3ETSI ETSI TR 145 912 V14.0.0 (2017-04)63GPP TR 45.912 version 14.0.0 Release 147.10.1 Analysis for
38、 Option C . 104g37.10.1.1 Introduction . 104g37.10.1.2 Legacy Frequency Planning 104g37.10.1.3 Impact of Wideband transmitter on legacy frequency planning 104g37.10.1.3.1 FLP-1/1 or 1/3 . 104g37.10.1.3.2 MRP 106g37.10.1.4 Extended frequency allocation 107g37.10.1.4.1 Introduction . 107g37.10.1.4.2 D
39、escription of Extended Frequency Allocation . 107g37.10.1.4.3 Impact of EFA on the BTS 108g37.10.1.4.3 Separation of carriers . 111g37.10.1.5 Evaluation of network performance 111g37.10.1.5.1 Setup 111g37.10.1.5.2 Results . 112g37.11 Impacts to the specifications 112g37.12 References 113g38 Higher O
40、rder Modulation and Turbo Codes 114g38.1 Introduction 114g38.2 Concept Description . 114g38.2.1 Higher Order Modulations 114g38.2.1.1 Square 16QAM Modulation 114g38.2.1.2 Other 16-ary Modulations . 116g38.2.1.3 32QAM Modulation 116g38.2.2 Channel Coding 117g38.2.3 Symbol Mapping and Interleaving 117
41、g38.2.4 Header Block 117g38.2.5 USF Signaling . 117g38.2.6 Link Adaptation 117g38.2.7 Incremental Redundancy Combining 117g38.2.8 Multislot Classes . 117g38.2.9 Non-core Components 118g38.2.9.1 Dual Carrier. 118g38.2.9.2 MS Receiver Diversity 118g38.3 Modelling Assumptions and Requirements 118g38.3.
42、1 Transmitter Impairments . 119g38.3.2 Receiver Impairments . 119g38.3.3 Equalizer . 120g38.4 Performance Characterization 120g38.4.1 Implementation Set A . 120g38.4.1.1 Modelling assumptions and requirements . 120g38.4.1.2 Comparison of BLER Performance 120g38.4.1.3 Link Performance with Link Adapt
43、ation . 122g38.4.1.4 System Simulation Results 123g38.4.2 Implementation B . 126g38.4.2.1 Introduction . 126g38.4.2.2 Basic Link Layer Performance 126g38.4.2.2.1 BER Performance 126g38.4.2.2.2 BLER Performance . 127g38.4.2.2.3 Throughput 129g38.4.2.3 Impact of Frequency Hopping. 129g38.4.2.4 Impact
44、of Incremental Redundancy 130g38.4.2.5 Impact of Propagation Environment . 131g38.4.2.6 Impact of RX and TX Impairments . 131g38.4.2.7 Impact of RRC Pulse Shaping . 133g38.4.2.8 Evaluation of Performance 134g38.4.3 Implementation C . 135g38.4.3.1 Channel coding . 135g38.4.3.1.1 EGPRS. 135g38.4.3.1.2
45、 Convolutional Codes with 16QAM . 135g38.4.3.1.3 Turbo Codes with 8-PSK Modulation . 135g38.4.3.1.4 Turbo Codes with 16QAM Modulation 136g3ETSI ETSI TR 145 912 V14.0.0 (2017-04)73GPP TR 45.912 version 14.0.0 Release 148.4.3.2 Modulation 136g38.4.3.3 Pulse Shaping 136g38.4.3.4 Link performance Evalua
46、tion 136g38.4.3.4.1 Simulation Assumptions 136g38.4.3.4.2 Link Level Results . 137g38.4.3.5 Link-to-system Interface . 138g38.4.3.6 System Level Results 138g38.4.3.6.1 Simulation Assumptions 138g38.4.3.6.2 Results . 139g38.4.3.7 Increased Peak Throughput with 16QAM and Turbo Codes 149g38.4.3.7.1 Mod
47、ulation, Coding and Interleaving 149g38.4.3.7.2 Link Performance 150g38.4.3.7.3 System Performance 153g38.4.3.8 16QAM with Alternative Transmit Pulse Shaping . 155g38.4.3.8.1 Link Performance 155g38.4.3.8.2 Spectrum 157g38.4.3.8.3 Discussion . 158g38.4.3.9 Higher order modulation than 16-QAM 158g38.
48、4.3.9.1 Modulation, coding and interleaving . 158g38.4.3.9.2 Interference Rejection Combining, IRC 160g38.4.3.9.3 Results . 161g38.4.3.10 Comparison between DFSE and RSSE Performance 168g38.4.3.11 Discussion . 169g38.4.3.11.1 Link Level Performance 169g38.4.3.11.2 System Level Performance 169g38.4.4
49、 Implementation Set D . 170g38.4.4.1 Performance Characterisation . 170g38.4.4.1.1 Uncoded BER Performance . 170g38.4.4.1.2 BLER Performance of Turbo Coding with 8PSK . 171g38.4.4.1.3 BLER Performance of Turbo Coding with 16QAM 172g38.4.4.1.4 Comparison to Ericsson Results 173g38.4.4.1.5 Graphs for Co-Channel Interferer Case (TU3iFH) 174g38.4.4.1.6 Graphs for Sensitivity Limited Case (TU3iFH) 178g38.4.4.1.7 Throughput Performance Gain 181g38.4.4.1.8 Number of Turbo Decoding Iterations 193g38.4.4.1.9 Improved Cell Edge Performance . 195g38.4.4.1.10 System Performance 198g38.4.
