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TECHNICAL REPORT
LTE;
Feasibility study for Further Advancements
for E-UTRA (LTE-Advanced)
(3GPP TR 36.912 version 15.0.0 Release 15)
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3GPP TR 36.912 version 15.0.0 Release 15 1 ETSI TR 136 912 V15.0.0 (2018-07)
Reference
RTR/TSGR-0136912vf00
Keywords
LTE
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3GPP TR 36.912 version 15.0.0 Release 15 2 ETSI TR 136 912 V15.0.0 (2018-07)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables 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 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
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Foreword
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 corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
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 expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
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3GPP TR 36.912 version 15.0.0 Release 15 3 ETSI TR 136 912 V15.0.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 6
1 Scope . 7
2 References . 7
3 Definitions, symbols and abbreviations . 8
3.1 Definitions . 8
3.2 Symbols . 8
3.3 Abbreviations . 8
4 Introduction . 8
5 Support of wider bandwidth . 8
5.1 General . 8
5.1A Physical layer . 9
5.1A.1 DL control signalling . 9
5.1A.2 UL control signalling . 9
5.2 User Plane . 10
5.2.1 Structure . 10
5.2.2 MAC . 11
5.2.3 RLC . 11
5.2.4 PDCP . 11
5.3 Control plane . 11
5.3.1 Structure . 11
5.3.2 RRC procedures . 12
5.3.2.1 System Information . 12
5.3.2.2 Connection Control . 12
5.3.2.3 Measurements . 12
5.3.3 Idle mode procedures . 12
6 Uplink transmission scheme . 12
6.1 Uplink spatial multiplexing . 12
6.1A Uplink transmit diversity . 14
6.1A.1 Transmit Diversity for Uplink Control Channel . 14
6.2 Uplink multiple access . 14
6.3 Uplink reference signals . 15
6.4 Uplink power control. 15
7 Downlink transmission scheme . 15
7.0 Physical channel mapping . 15
7.1 Downlink spatial multiplexing . 15
7.1.1 Feedback in support of downlink spatial multiplexing . 16
7.2 Downlink reference signals . 16
7.3 Downlink transmit diversity . 17
8 Coordinated multiple point transmission and reception . 17
8.1 Downlink coordinated multi-point transmission . 17
8.2 Uplink coordinated multi-point reception . 17
9 Relaying . 17
9.1 General . 17
9.2 Architecture . 18
9.3 Relay-eNodeB link for inband relay . 18
9.3.1 Resource partitioning for relay-eNodeB link . 18
9.3.2 Backward compatible backhaul partitioning . 19
9.3.3 Backhaul resource assignment . 19
ETSI
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3GPP TR 36.912 version 15.0.0 Release 15 4 ETSI TR 136 912 V15.0.0 (2018-07)
9.4 Relay-eNodeB link for outband relay . 20
10 Improvement for latency . 20
10.1 Improvement for C-Plane latency. 20
10.2 Improvement for U-Plane latency . 21
11 Radio transmission and reception . 21
11.1 RF scenarios . 21
11.1.1 Deployment scenarios . 21
11.2 Common requirements for UE and BS . 21
11.2.1 Carrier Aggregation . 21
11.2.1.1 Bandwidth configuration of component carriers . 21
11.2.1.2 Carrier spacing between component carriers . 21
11.2.2 Operating bands . 22
11.3 UE RF requirements . 23
11.3.1 General . 23
11.3.2 Transmitter characteristics . 23
11.3.2.1 Transmitter architecture . 23
11.3.2.2 Transmit power . 24
11.3.2.3 Output power dynamics . 24
11.3.2.4 Transmit signal quality . 25
11.3.2.5 Output RF spectrum emissions . 25
11.3.2.5.1 Adjacent Channel Leakage ratio . 25
11.3.2.5.2 Spurious emission (UE to UE co-existence). 25
11.3.2.6 Transmit intermodulation . 25
11.3.3 Receiver characteristics . 25
11.3.3.1 Receiver architecture . 26
11.3.3.2 Receiver Sensitivity . 26
11.3.3.3 Selectivity. 26
11.3.3.4 Blocking performance . 27
11.3.3.5 Spurious response . 27
11.3.3.6 Intermodulation performance . 27
11.3.3.7 Spurious emission . 27
11.4 BS RF requirements . 27
11.4.1 General . 27
11.4.2 Transmitter characteristics . 28
11.4.2.1 Base Station output power . 28
11.4.2.2 Transmitted signal quality . 28
11.4.2.3 Unwanted emissions. 28
11.4.2.4 Transmitter spurious emissions . 28
11.4.3 Receiver characteristics . 29
11.4.3.1 Reference sensitivity level . 29
11.4.3.2 Adjacent Channel Selectivity (ACS), narrow-band blocking, Blocking, Receiver intermodulation . 29
11.4.3.3 Performance requirements . 29
12 Mobility enhancements . 29
13 TS 36.133 [17] requirements enhancements . 30
14 MBMS Enhancements . 30
15 SON Enhancements . 30
16 Self-Evaluation Report on "LTE Release 10 and beyond (LTE-Advanced)" . 30
16.1 Peak spectral efficiency . 31
16.2 C-plane latency . 32
16.2.1 Idle to Connected . 32
16.2.2 Dormant to Active . 33
16.3 U-Plane latency . 34
16.4 Spectral efficiency and user throughput . 34
16.4.1 Cell spectral efficiency and cell-edge spectral efficiency . 34
16.4.1.1 Indoor . 34
16.4.1.2 Microcellular . 35
16.4.1.3 Base coverage urban . 36
ETSI
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3GPP TR 36.912 version 15.0.0 Release 15 5 ETSI TR 136 912 V15.0.0 (2018-07)
16.4.1.4 High speed. 37
16.4.2 Number of supported VoIP users . 39
16.4.3 Mobility traffic channel link data rates . 39
16.5 Handover Performance . 40
16.5.1 Intra-frequency handover interruption time . 42
16.5.2 Inter-frequency handover interruption time within a spectrum band . 42
16.5.3 Inter-frequency handover interruption time between spectrum bands . 42
16.6 Spectrum and bandwidth . 42
16.6.1 Deployment in IMT bands . 42
16.6.2 Bandwidth and channel bandwidth scalability . 43
16.7 Services . 43
16.8 Conclusions of the Self-Evaluation . 43
16A Performance Evaluation of LTE-Advanced for 3GPP target fulfillment . 44
17 Conclusions . 46
Annex A: Simulation model . 47
A.1 General assumption . 47
A.2 CoMP assumption for evaluation . 49
A.3 Detailed simulation results . 49
Annex B: Latency performance of Rel-8 . 50
B.1 C-plane latency . 50
B.1.1 Transition IDLE to CONNECTED . 50
B.1.1.1 FDD frame structure . 50
B.1.1.2 TDD frame structure . 51
B.1.2 Transition Dormant to Active . 52
B.1.2.1 FDD frame structure . 53
B.1.2.1.1 Uplink initiated transition, synchronized . 53
B.1.2.1.2 Uplink initiated transition, unsynchronized . 53
B.1.2.1.3 Downlink initiated transition, synchronized . 53
B.1.2.1.4 Downlink initiated transition, unsynchronized . 53
B.1.2.2 TDD frame structure . 54
B.1.2.2.1 Uplink initiated transition, synchronized . 54
B.1.2.2.2 Uplink initiated transition, unsynchronized . 54
B.1.2.2.3 Downlink initiated transition, synchronized . 55
B.1.2.2.4 Downlink initiated transition, unsynchronized . 55
B.2 U-plane latency . 56
B.2.1 FDD frame structure . 56
B.2.2 TDD frame structure . 57
Annex C: ITU-R Submission Templates . 60
C.1 Description template – characteristics (4.2.3.2) . 60
C.2 Description template – link budget (4.2.3.3) . 60
C.3 Compliance templates for services (4.2.4.1), for spectrum (4.2.4.2), technical performance
(4.2.4.3) . 60
Annex D: Change history . 61
History . 62
ETSI
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3GPP TR 36.912 version 15.0.0 Release 15 6 ETSI TR 136 912 V15.0.0 (2018-07)
Foreword
rd
This Technical Report has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
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 only chan
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