1、 ETSI TR 125 912 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); LTE; Feasibility study for evolved Universal Terrestrial Radio Access (UTRA) and Universal Terrestrial Radio Access Network (UTRAN) (3GPP TR 25.912 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 125 912 V
2、15.0.0 (2018-07)13GPP TR 25.912 version 15.0.0 Release 15Reference RTR/TSGR-0025912vf00 Keywords LTE,UMTS 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 l
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13、r reproduce any trademark and/or tradename. Mention of those trademarks in the present document does not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks. Foreword This Technical Report (TR) has been produced by ETSI 3rd Generation Partnership
14、 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 corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identiti
15、es 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 described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expressio
16、n of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 125 912 V15.0.0 (2018-07)33GPP TR 25.912 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 7g31 Scope 8g3
17、2 References 8g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 8g33.3 Abbreviations . 8g34 Introduction 10g35 Deployment scenario 10g36 Radio interface protocol architecture for evolved UTRA 11g36.1 User plane . 13g36.2 Control plane 13g37 Physical layer for evolved UTR
18、A 14g37.1 Downlink transmission scheme 14g37.1.1 Basic transmission scheme based on OFDMA . 14g37.1.1.1 Basic parameters . 14g37.1.1.1.1 Modulation scheme . 15g37.1.1.2 Multiplexing including reference-signal structure 15g37.1.1.2.1 Downlink data multiplexing 15g37.1.1.2.2 Downlink reference-signal
19、structure 15g37.1.1.2.3 Downlink L1/L2 Control Signaling . 15g37.1.1.3 MIMO and transmit diversity 16g37.1.1.4 MBMS . 16g37.1.2 Physical layer procedure . 16g37.1.2.1 Scheduling . 16g37.1.2.2 Link adaptation . 17g37.1.2.3 HARQ . 17g37.1.2.4 Cell search . 17g37.1.2.5 Inter-cell interference mitigatio
20、n . 18g37.1.3 Physical layer measurements 18g37.1.3.1 UE measurements . 18g37.1.3.1.1 Measurements for Scheduling . 18g37.1.3.1.1.1 Channel Quality Measurements . 18g37.1.3.1.1.2 Measurements for Interference Coordination/Management . 18g37.1.3.1.2 Measurements for Mobility . 18g37.1.3.1.2.1 Intra-f
21、requency neighbour measurements 19g37.1.3.1.2.2 Inter-frequency neighbour measurements 19g37.1.3.1.2.3 Inter RAT measurements . 19g37.1.3.1.2.4 Measurement gap control . 19g37.2 Uplink transmission scheme . 19g37.2.1 Basic transmission scheme . 19g37.2.1.1 Modulation scheme . 20g37.2.1.2 Multiplexin
22、g including reference signal structure . 20g37.2.1.2.1 Uplink data multiplexing . 20g37.2.1.2.2 Uplink reference-signal structure 20g37.2.1.2.3 Multiplexing of L1/L2 control signaling . 21g37.2.1.2.4 Uplink L1/L2 Control Signalling. 21g37.2.1.3 MIMO . 21g37.2.1.4 Power De-rating Reduction . 21g3ETSI
23、 ETSI TR 125 912 V15.0.0 (2018-07)43GPP TR 25.912 version 15.0.0 Release 157.2.2 Physical channel procedure. 21g37.2.2.1 Random access procedure . 21g37.2.2.1.1 Non-synchronized random access . 22g37.2.2.1.1.1 Power control for non-synchronized random access 22g37.2.2.1.2 Synchronized random access
24、. 22g37.2.2.2 Scheduling . 22g37.2.2.3 Link adaptation . 22g37.2.2.4 Power control 23g37.2.2.5 HARQ . 23g37.2.2.6 Uplink timing control 23g37.2.2.7 Inter-cell interference mitigation . 23g38 Layer 2 and RRC evolution for evolved UTRA . 23g38.1 MAC sublayer 25g38.1.1 Services and functions 25g38.1.2
25、Logical channels . 25g38.1.2.1 Control channels . 26g38.1.2.2 Traffic channels . 26g38.1.3 Mapping between logical channels and transport channels 26g38.1.3.1 Mapping in Uplink 27g38.1.3.2 Mapping in downlink 27g38.2 RLC sublayer 27g38.3 PDCP sublayer . 27g38.4 RRC 28g38.4.1 Services and functions 2
26、8g38.4.2 RRC protocol states 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial onl
27、y changes have been incorporated in the document. ETSI ETSI TR 125 912 V15.0.0 (2018-07)83GPP TR 25.912 version 15.0.0 Release 151 Scope This present document is the technical report for the study item “Evolved UTRA and UTRAN“ 1. The objective of the study item is to develop a framework for the evol
28、ution of the 3GPP radio-access technology towards a high-data-rate, low-latency and packet-optimized radio access technology. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (
29、identified by date of publication, edition number, version number, etc.) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific re
30、ference implicitly refers to the latest version of that document in the same Release as the present document. 1 3GPP TD RP-040461: “Proposed Study Item on Evolved UTRA and UTRAN“. 2 3GPP TR 25.814: “Physical Layer Aspects for Evolved UTRA“ 3 3GPP TR 23.882: “3GPP System Architecture Evolution: Repor
31、t on Technical Options and Conclusions“ 4 3GPP TR 25.913: “Requirements for Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN)“ 5 3GPP TR 25.813: “Evolved UTRA (E-UTRA) and Evolved UTRAN (E-UTRAN): Radio Interface Protocol Aspects.“ 6 3GPP TD RP-060292 R3.018: “E-UTRA and E-UTRAN; Radio access archit
32、ecture and interfaces.“ 7 Recommendation ITU-R SM.329-10: “Unwanted emissions in the spurious domain“ 8 3GPP TD R4-060660: “E-UTRA Radio Technology Aspects V0.1.0“, NTT DoCoMo 9 3GPP TD R4-051146: “Some operators requirements for prioritisation of performance requirements work in RAN WG4“ 10 3GPP TD
33、 R1-070674: “LTE physical layer framework for performance verification“ Orange, China Mobile, KPN, NTT DoCoMo, Sprint, T-Mobile, Vodafone, Telecom Italia. 3 Definitions, symbols and abbreviations 3.1 Definitions void 3.2 Symbols void 3.3 Abbreviations For the purposes of the present document, the fo
34、llowing abbreviations apply: ACK Acknowledgement ETSI ETSI TR 125 912 V15.0.0 (2018-07)93GPP TR 25.912 version 15.0.0 Release 15ACLR Adjacent Channel Leakage Ratio aGW Access Gateway AM Acknowledge Mode ARQ Automatic Repeat Request AS Access Stratum BCCH Broadcast Control Channel BCH Broadcast Chann
35、el C/I Carrier-to-Interference Power Ratio CAZAC Constant Amplitude Zero Auto-Correlation CMC Connection Mobility Control CP Cyclic Prefix C-plane Control Plane CQI Channel Quality Indicator CRC Cyclic Redundancy Check DCCH Dedicated Control Channel DL Downlink DRX Discontinuous Reception DTCH Dedic
36、ated Traffic Channel DTX Discontinuous Transmission eNB E-UTRAN NodeB EPC Evolved Packet Core E-UTRA Evolved UTRA E-UTRAN Evolved UTRAN FDD Frequency Division Duplex FDM Frequency Division Multiplexing GERAN GSM EDGE Radio Access Network GNSS Global Navigation Satellite System GSM Global System for
37、Mobile communication HARQ Hybrid ARQ HO HandoverHSDPA High Speed Downlink Packet Access ICIC Inter-Cell Interference Coordination IP Internet Protocol LB Load BalancingLCR Low Chip Rate LTE Long Term Evolution MAC Medium Access Control MBMS Multimedia Broadcast Multicast Service MCCH Multicast Contr
38、ol Channel MCS Modulation and Coding Scheme MIMO Multiple Input Multiple Output MME Mobility Management Entity MTCH MBMS Traffic Channel NACK Non-AcknowledgementNAS Non-Access Stratum OFDM Orthogonal Frequency Division Multiplexing OFDMA Orthogonal Frequency Division Multiple Access PA Power Amplifi
39、er PAPR Peak-to-Average Power Ratio PCCH Paging Control Channel PDCP Packet Data Convergence Protocol PDU Packet Data Unit PHY Physical layerPLMN Public Land Mobile Network PRB Physical Resource Block PSC Packet Scheduling QAM Quadrature Amplitude Modulation QoS Quality of Service RAC Radio Admissio
40、n Control RACH Random Access Channel RAT Radio Access Technology RB Radio Bearer ETSI ETSI TR 125 912 V15.0.0 (2018-07)103GPP TR 25.912 version 15.0.0 Release 15RBC Radio Bearer Control RF Radio Frequency RLC Radio Link Control RNL Radio Network Layer ROHC Robust Header Compression RRC Radio Resourc
41、e Control RRM Radio Resource Management RU Resource Unit S1 interface between eNB and aGW S1-C S1-Control plane S1-U S1-User planeSAE System Architecture Evolution SAP Service Access Point SC-FDMA Single Carrier Frequency Division Multiple Access SCH Synchronization Channel SDMA Spatial Division Mul
42、tiple Access SDU Service Data Unit SFN Single Frequency Network TA Tracking Area TB Transport BlockTCP Transmission Control Protocol TDD Time Division Duplex TM Transparent ModeTNL Transport Network Layer TTI Transmission Time Interval UE User Equipment UL Uplink UM Un-acknowledge Mode UMTS Universa
43、l Mobile Telecommunication System UPE User Plane Entity U-plane User plane UTRA Universal Terrestrial Radio Access UTRAN Universal Terrestrial Radio Access Network VRB Virtual Resource Block X2 interface between eNBs X2-C X2-Control plane X2-U X2-User plane 4 Introduction At the 3GPP TSG RAN #26 mee
44、ting, the SI description on “Evolved UTRA and UTRAN“ was approved 1. The justification of the study item was, that with enhancements such as HSDPA and Enhanced Uplink, the 3GPP radio-access technology will be highly competitive for several years. However, to ensure competitiveness in an even longer
45、time frame, i.e. for the next 10 years and beyond, a long-term evolution of the 3GPP radio-access technology needs to be considered. Important parts of such a long-term evolution include reduced latency, higher user data rates, improved system capacity and coverage, and reduced cost for the operator
46、. In order to achieve this, an evolution of the radio interface as well as the radio network architecture should be considered. Considering a desire for even higher data rates and also taking into account future additional 3G spectrum allocations the long-term 3GPP evolution should include an evolut
47、ion towards support for wider transmission bandwidth than 5 MHz. At the same time, support for transmission bandwidths of 5MHz and less than 5MHz should be investigated in order to allow for more flexibility in whichever frequency bands the system may be deployed 5 Deployment scenario A very large s
48、et of scenarios are foreseen, as stated in 25.913 4: ETSI ETSI TR 125 912 V15.0.0 (2018-07)113GPP TR 25.912 version 15.0.0 Release 15- Standalone deployment scenario: In this scenario the operator is deploying E-UTRAN either with no previous network deployed in the area or it could be deployed in ar
49、eas where there is existing UTRAN/GERAN coverage but for any reason there is no requirement for interworking with UTRAN/GERAN (e.g. standalone wireless broadband application). - Integrating with existing UTRAN and/or GERAN deployment scenario: In this scenario it is assumed that the operator is having either a UTRAN and/or a GERAN network deployed with full or partial coverage in the same geographical area. It is assumed that the GERAN and UTRAN networks respectively can have differently levels of maturity. In order to enable the large number
