1、 ETSI TR 125 996 V15.0.0 (2018-07) Universal Mobile Telecommunications System (UMTS); Spatial channel model for Multiple Input Multiple Output (MIMO) simulations (3GPP TR 25.996 version 15.0.0 Release 15) TECHNICAL REPORT ETSI ETSI TR 125 996 V15.0.0 (2018-07)13GPP TR 25.996 version 15.0.0 Release 1
2、5Reference RTR/TSGR-0625996vf00 Keywords 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 la Sous-Prfecture de Grasse (06) N 7803/88 Important notice T
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15、p. 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 E
16、TSI deliverables except when used in direct citation. ETSI ETSI TR 125 996 V15.0.0 (2018-07)33GPP TR 25.996 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 5
17、g33.1 Definitions 5g33.2 Symbols 6g33.3 Abbreviations . 6g34 Spatial channel model for calibration purposes 6g34.1 Purpose . 6g34.2 Link level channel model parameter summary . 6g34.3 Spatial parameters per path 7g34.4 BS and MS array topologies . 7g34.5 Spatial parameters for the BS . 8g34.5.1 BS a
18、ntenna pattern 8g34.5.2 Per-path BS angle spread (AS) . 10g34.5.3 Per-path BS angle of departure . 10g34.5.4 Per-path BS power azimuth spectrum . 10g34.6 Spatial parameters for the MS 10g34.6.1 MS antenna pattern . 10g34.6.2 Per-path MS angle spread (AS) 10g34.6.3 Per-path MS angle of arrival . 11g3
19、4.6.4 Per-path MS power azimuth spectrum 11g34.6.5 MS direction of travel . 11g34.6.6 Per-path Doppler spectrum . 12g34.7 Generation of channel model 12g34.8 Calibration and reference values 12g35 Spatial channel model for simulations . 12g35.1 General definitions, parameters, and assumptions . 13g3
20、5.2 Environments . 15g35.3 Generating user parameters 17g35.3.1 Generating user parameters for urban macrocell and suburban macrocell environments . 17g35.3.2 Generating user parameters for urban microcell environments 19g35.4 Generating channel coefficients . 21g35.5 Optional system simulation feat
21、ures. 22g35.5.1 Polarized arrays 22g35.5.2 Far scatterer clusters . 24g35.5.3 Line of sight 25g35.5.4 Urban canyon 26g35.6 Correlation between channel parameters 27g35.7 Modeling intercell interference 28g35.8 System Level Calibration . 29g3Annex A: Calculation of circular angle spread . 36g3Annex B
22、: Change history 37g3History 38g3ETSI ETSI TR 125 996 V15.0.0 (2018-07)43GPP TR 25.996 version 15.0.0 Release 15Foreword This Technical Report has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may
23、 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
24、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 changes have been incorporate
25、d in the document. ETSI ETSI TR 125 996 V15.0.0 (2018-07)53GPP TR 25.996 version 15.0.0 Release 151 Scope The present document details the output of the combined 3GPP-3GPP2 spatial channel model (SCM) ad-hoc group (AHG). The scope of the 3GPP-3GPP2 SCM AHG is to develop and specify parameters and me
26、thods associated with the spatial channel modelling that are common to the needs of the 3GPP and 3GPP2 organizations. The scope includes development of specifications for: System level evaluation. Within this category, a list of four focus areas are identified, however the emphasis of the SCM AHG wo
27、rk is on items a and b. a) Physical parameters (e.g. power delay profiles, angle spreads, dependencies between parameters) b) System evaluation methodology. c) Antenna arrangements, reference cases and definition of minimum requirements. d) Some framework (air interface) dependent parameters. Link l
28、evel evaluation. The link level models are defined only for calibration purposes. It is a common view within the group that the link level simulation assumptions will not be used for evaluation and comparison of proposals. 2 References The following documents contain provisions which, through refere
29、nce in this text, constitute provisions of the present document. - References are either specific (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 versi
30、on applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. 1 H. M. Foster, S. F. Dehghan, R. Steele, J. J. Stefanov, H. K. Strelouhov, Role of Sit
31、e Shielding in Prediction Models for Urban Radiowave Propagation (Digest No. 1994/231), IEE Colloquium on Microcellular measurements and their prediction, 1994 pp. 2/1-2/6 . 2 L. Greenstein, V. Erceg, Y. S. Yeh, M. V. Clark, “A New Path-Gain/Delay-Spread Propagation Model for Digital Cellular Channe
32、ls,“ IEEE Transactions on Vehicular Technology, VOL. 46, NO.2, May 1997, pp.477-485. 3 L. M. Correia, Wireless Flexible Personalized Communications, COST 259: European Co-operation in Mobile Radio Research, Chichester: John Wiley however the material in this 4.2 Link level channel model parameter su
33、mmary The table below summarizes the physical parameters to be used for link level modelling. ETSI ETSI TR 125 996 V15.0.0 (2018-07)73GPP TR 25.996 version 15.0.0 Release 15Table 4.1: Summary SCM link level parameters for calibration purposes Model Case I Case II Case III Case IV Corresponding 3GPP
34、Designator* Case B Case C Case D Case A Corresponding 3GPP2 Designator* Model A, D, E Model C Model B Model F PDP Modified Pedestrian A Vehicular A Pedestrian B Single Path # of Paths 1) 4+1 (LOS on, K = 6dB) 2) 4 (LOS off) 6 6 1 Relative Path Power(dB)Delay (ns)1) 0.0 2) -Inf 0 0,0 0 0.0 0 0 0 1) -
35、6.51 2) 0.0 0 -1.0 310 -0.9 200 1) -16.21 2) -9.7 110 -9.0 710 -4.9 800 1) -25.71 2) 19.2 190 -10.0 1090 -8.0 1200 1) -29.31 2) -22.8 410 -15.0 1730 -7.8 2300 -20.0 2510 -23.9 3700 Speed (km/h) 1) 3 2) 30, 120 3, 30, 120 3, 30, 120 3 UE/Mobile StationTopology Reference 0.5g540 Reference 0.5g540 Refe
36、rence 0.5g540 N/A PAS 1) LOS on: Fixed AoA for LOS component, remaining power has 360 degree uniform PAS. 2) LOS off: PAS with a Laplacian distribution, RMS angle spread of 35 degrees per path RMS angle spread of 35 degrees per path with a Laplacian distribution Or 360 degree uniform PAS. RMS angle
37、spread of 35 degrees per path with a Laplacian distribution N/A DoT (degrees) 0 22.5 -22.5 N/A AoA (degrees) 22.5 (LOS component) 67.5 (all other paths) 67.5 (all paths) 22.5 (odd numbered paths), -67.5 (even numbered paths) N/A Node B/ Base StationTopology Reference: ULA with 0.5g540-spacing or 4g5
38、40-spacing or 10g540-spacing N/A PAS Laplacian distribution with RMS angle spread of 2 degrees or 5 degrees, per path depending on AoA/AoD N/A AoD/AoA (degrees) 50for 2RMS angle spread per path 20for 5RMS angle spread per path N/A NOTE: *Designators correspond to channel models previously proposed i
39、n 3GPP and 3GPP2 ad-hoc groups. 4.3 Spatial parameters per path Each resolvable path is characterized by its own spatial channel parameters (angle spread, angle of arrival, power azimuth spectrum). All paths are assumed independent. These assumptions apply to both the BS and the MS specific spatial
40、parameters. The above assumptions are in effect only for the Link Level channel model. 4.4 BS and MS array topologies The spatial channel model should allow any type of antenna configuration to be selected, although details of a given configuration must be shared to allow others to reproduce the mod
41、el and verify the results. Calibrating simulators at the link level requires a common set of assumptions including a specific set of antenna topologies to define a baseline case. At the MS, the reference element spacing is 0.5, where is the wavelength of the carrier frequency. At the BS, three value
42、s for reference element spacing are defined: 0.5, 4, and 10. ETSI ETSI TR 125 996 V15.0.0 (2018-07)83GPP TR 25.996 version 15.0.0 Release 154.5 Spatial parameters for the BS 4.5.1 BS antenna pattern The 3-sector antenna pattern used for each sector, Reverse Link and Forward Link, is plotted in Figur
43、e 4.1 and is specified by ()23min 12 , where 180 180mdBAAg170g186g167g183g171g187= g168g184g171g187g169g185g172g188(4.5-1) is defined as the angle between the direction of interest and the boresight of the antenna, dB3 is the 3dB beamwidth in degrees, and Amis the maximum attenuation. For a 3 sector
44、 scenario dB3 is 70 degrees, =mA 20dB,and the antenna boresight pointing direction is given by Figure 4.2. For a 6 sector scenario dB3 is 35o, mA =23dB, which results in the pattern shown in Figure 4.3, and the boresight pointing direction defined by Figure 4.4. The boresight is defined to be the di
45、rection to which the antenna shows the maximum gain. The gain for the 3-sector 70 degree antenna is 14dBi. By reducing the beamwidth by half to 35 degrees, the corresponding gain will be 3dB higher resulting in 17dBi. The antenna pattern shown is targeted for diversity-oriented implementations (i.e.
46、 large inter-element spacings). For beamforming applications that require small spacings, alternative antenna designs may have to be considered leading to a different antenna pattern. Figure 4.1: Antenna pattern for 3-sector cells -25-20-15-10-50-120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120Gain in
47、 dB. Azimuth in Degrees3 Sector Antenna PatternETSI ETSI TR 125 996 V15.0.0 (2018-07)93GPP TR 25.996 version 15.0.0 Release 15Antenna Boresight in direction of arrow 3-Sector Scenario BS Figure 4.2: Boresight pointing direction for 3-sector cells Figure 4.3: Antenna pattern for 6-sector cells Antenn
48、a Boresight in direction of arrow 6-Sector Boundaries BS Figure 4.4: Boresight pointing direction for 6-sector cells -25-20-15-10-50-60-50-40-30-20-100 102030405060Gain in dBAzimuth in Degrees6 Sector Antenna PatternETSI ETSI TR 125 996 V15.0.0 (2018-07)103GPP TR 25.996 version 15.0.0 Release 154.5.
49、2 Per-path BS angle spread (AS) The base station per-path angle spread is defined as the root mean square (RMS) of angles with which an arriving paths power is received by the base station array. The individual path powers are defined in the temporal channel model described in Table 4.1. Two values of BS angle spread (each associated with a corresponding mean angle of departure, AoD) are considered: - AS: 2 degrees at AoD 50 degrees - AS: 5 degrees at AoD 20 degrees It should be noted that attention should be paid when comparing
