Content for TR 36.888 Word version: 12.0.0
2 References
3 Definitions, symbols and abbreviations
4 Objectives of study
5 Requirements and methodology
6 Concepts for provisioning of low-cost MTC UE and cost analysis
7 Cost reduction evaluation summary
8 Specification aspects to restrict techniques to only low performance MTC UE.
9 Coverage improvement
10 Conclusion and recommendations
A Traffic model for Machine-Type Communications
$ Change history
2 References p. 7
3 Definitions, symbols and abbreviations p. 8
3.1 Definitions p. 8
3.2 Symbols p. 8
4 Objectives of study p. 9
5 Requirements and methodology p. 10
5.1 Requirements p. 10
5.2 Evaluation methodology p. 10
5.2.1 Methodology for performance evaluation p. 11
5.2.1.1 Power consumption analysis p. 11
5.2.1.2 Coverage analysis p. 11
5.2.1.3 Cell spectral efficiency p. 13
5.2.2 Methodology for cost analysis p. 14
5.3 Cost drivers of reference LTE modem p. 15
6 Concepts for provisioning of low-cost MTC UE and cost analysis p. 18
6.1 Introduction p. 18
6.2 Reduction of maximum bandwidth p. 18
6.2.1 Description p. 18
6.2.2 Analysis/evaluation of performance against requirements p. 19
6.2.2.1 Coverage analysis p. 19
6.2.2.2 Minimum data rate p. 19
6.2.2.3 Power consumption p. 19
6.2.2.4 Impact on specification p. 20
6.2.2.5 Cell spectral efficiency p. 21
6.2.3 Analysis/evaluation of cost reduction p. 21
6.3 Single receive RF chain p. 23
6.3.1 Description p. 23
6.3.2 Analysis/evaluation of performance against requirements p. 23
6.3.2.1 Coverage analysis p. 23
6.3.2.2 Power consumption p. 24
6.3.2.3 Impact on specification p. 24
6.3.2.4 Cell spectral efficiency p. 24
6.3.3 Analysis/evaluation of cost reduction p. 25
6.4 Reduction of peak rate p. 27
6.4.1 Description p. 27
6.4.2 Analysis/evaluation of performance against requirements p. 27
6.4.2.1 Coverage analysis p. 27
6.4.2.2 Minimum data rate p. 27
6.4.2.3 Power consumption p. 27
6.4.2.4 Impact on specification p. 27
6.4.2.5 Cell spectral efficiency p. 27
6.4.3 Analysis/evaluation of cost reduction p. 28
6.5 Reduction of transmit power p. 30
6.5.1 Description p. 30
6.5.2 Analysis/evaluation of performance against requirements p. 30
6.5.2.1 Coverage analysis p. 30
6.5.2.2 Power consumption p. 30
6.5.2.3 Impact on specification p. 30
6.5.2.4 Cell spectral efficiency p. 30
6.5.3 Analysis/evaluation of cost reduction p. 31
6.6 Half duplex operation p. 33
6.6.1 Description p. 33
6.6.2 Analysis/evaluation of performance against requirements p. 33
6.6.2.1 Coverage analysis p. 33
6.6.2.2 Power consumption p. 33
6.6.2.3 Impact on specification p. 33
6.6.2.4 Cell spectral efficiency p. 34
6.6.3 Analysis/evaluation of cost reduction p. 34
6.7 Reduction of supported downlink transmission modes p. 36
7 Cost reduction evaluation summary p. 38
8 Specification aspects to restrict techniques to only low performance MTC UE. p. 40
9 Coverage improvement p. 41
9.1 Description p. 41
9.2 Coverage Analysis p. 41
9.3 Required system functionality p. 41
9.4 Concepts for coverage improvement p. 42
9.4.1 TTI bundling/ HARQ retransmission/ Repetition/ Code spreading/ RLC segmentation/ Low rate coding/ Low modulation order/ New Decoding Techniques p. 42
9.4.2 Power boosting / PSD boosting p. 42
9.4.3 Relaxed requirement p. 42
9.4.4 Design new channels or signals p. 42
9.4.5 Small cells for coverage improvements p. 43
9.4.6 Additional techniques p. 43
9.5 Analysis of Physical Channels and Signals p. 43
9.5.1 PSS/SSS p. 43
9.5.1.1 Coverage enhancement p. 43
9.5.1.2 Impact on specification p. 44
9.5.1.3 Other impacts p. 44
9.5.2 PBCH p. 44
9.5.2.1 Coverage enhancement p. 44
9.5.2.2 Impact on specification p. 45
9.5.2.3 Other impacts p. 45
9.5.3 PRACH p. 46
9.5.3.1 Coverage enhancement p. 46
9.5.3.2 Impact on specification p. 46
9.5.3.3 Other impacts p. 46
9.5.4 (E)PDCCH p. 46
9.5.4.1 Coverage enhancement p. 46
9.5.4.2 Impact on specification p. 47
9.5.4.3 Other impacts p. 47
9.5.5 PUCCH p. 47
9.5.5.1 Coverage enhancement p. 47
9.5.5.2 Impact on specification p. 47
9.5.5.3 Other impacts p. 48
9.5.6 PDSCH p. 48
9.5.6.1 Coverage enhancement p. 48
9.5.6.2 Impact on specification p. 49
9.5.6.3 Other impacts p. 49
9.5.7 PUSCH p. 49
9.5.7.1 Coverage improvement p. 49
9.5.7.2 Impact on specification p. 51
9.5.7.3 Other impacts p. 51
10 Conclusion and recommendations p. 51
A Traffic model for Machine-Type Communications p. 52
A.1 MTC Traffic model/characteristics regular reporting p. 53
A.2 MTC Traffic model/characteristics triggered reporting p. 54
$ Change history p. 55
