1、 ETSI TR 1Universal Mobile TelSpafor Multiple Input M(3GPP TR 25.9TECHNICAL REPORT 125 996 V13.1.0 (2017elecommunications System (patial channel model Multiple Output (MIMO) simul.996 version 13.1.0 Release 1317-01) (UMTS); ulations 13) ETSI ETSI TR 125 996 V13.1.0 (2017-01)13GPP TR 25.996 version 1
2、3.1.0 Release 13Reference RTR/TSGR-0125996vd10 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 Imp
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9、996 version 13.1.0 Release 13Intellectual 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 can be found in ETSI SR 00
10、0 314: “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 ETSI IPR Policy, no investi
11、gation, 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. Foreword This Technical Report (
12、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 c
13、ross 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 described in clause 3.2 of
14、 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 125 996 V13.1.0 (2017-01)33GPP TR 25.996 version 13.1.0 Release 13Contents Intellectual Property Rights 2g3Foreword .
15、 2g3Modal verbs terminology 2g3Foreword . 4g31 Scope 5g32 References 5g33 Definitions, symbols and abbreviations . 6g33.1 Definitions 6g33.2 Symbols 6g33.3 Abbreviations . 6g34 Spatial channel model for calibration purposes 6g34.1 Purpose . 6g34.2 Link level channel model parameter summary . 7g34.3
16、Spatial parameters per path 8g34.4 BS and MS array topologies . 8g34.5 Spatial parameters for the BS . 8g34.5.1 BS antenna pattern 8g34.5.2 Per-path BS angle spread (AS) . 10g34.5.3 Per-path BS angle of departure . 11g34.5.4 Per-path BS power azimuth spectrum . 11g34.6 Spatial parameters for the MS
17、11g34.6.1 MS antenna pattern . 11g34.6.2 Per-path MS angle spread (AS) 11g34.6.3 Per-path MS angle of arrival . 11g34.6.4 Per-path MS power azimuth spectrum 12g34.6.5 MS direction of travel . 12g34.6.6 Per-path Doppler spectrum . 13g34.7 Generation of channel model 13g34.8 Calibration and reference
18、values 13g35 Spatial channel model for simulations . 13g35.1 General definitions, parameters, and assumptions . 14g35.2 Environments . 16g35.3 Generating user parameters 18g35.3.1 Generating user parameters for urban macrocell and suburban macrocell environments . 18g35.3.2 Generating user parameter
19、s for urban microcell environments 20g35.4 Generating channel coefficients . 22g35.5 Optional system simulation features. 23g35.5.1 Polarized arrays 23g35.5.2 Far scatterer clusters . 25g35.5.3 Line of sight 26g35.5.4 Urban canyon 27g35.6 Correlation between channel parameters 28g35.7 Modeling inter
20、cell interference 29g35.8 System Level Calibration . 30g3Annex A: Calculation of circular angle spread . 38g3Annex B: Change history 40g3History 41g3ETSI ETSI TR 125 996 V13.1.0 (2017-01)43GPP TR 25.996 version 13.1.0 Release 13Foreword This Technical Report has been produced by the 3rdGeneration Pa
21、rtnership 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 i
22、ncrease 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 enhance
23、ments, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 125 996 V13.1.0 (2017-01)53GPP TR 25.996 version 13.1.0 Release 131 Scope The present document details the output of the combined 3GPP-3GPP2 spatial cha
24、nnel model (SCM) ad-hoc group (AHG). The scope of the 3GPP-3GPP2 SCM AHG is to develop and specify parameters and methods 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
25、 evaluation. Within this category, a list of four focus areas are identified, however the emphasis of the SCM AHG work 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, re
26、ference cases and definition of minimum requirements. d) Some framework (air interface) dependent parameters. Link level 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 e
27、valuation and comparison of proposals. 2 References The following documents contain provisions which, through reference 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-speci
28、fic. - 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 reference implicitly refers to the latest version of that document in the same Rele
29、ase as the present document. 1 H. M. Foster, S. F. Dehghan, R. Steele, J. J. Stefanov, H. K. Strelouhov, Role of Site 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. Green
30、stein, V. Erceg, Y. S. Yeh, M. V. Clark, A New Path-Gain/Delay-Spread Propagation Model for Digital Cellular Channels, 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 Mo
31、bile Radio Research, Chichester: John Wiley however the material in this 4.2 Link level channel model parameter summary The table below summarizes the physical parameters to be used for link level modelling. Table 4.1: Summary SCM link level parameters for calibration purposes Model Case I Case II C
32、ase III Case IV Corresponding 3GPP 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)
33、 0.0 2) -Inf 0 0,0 0 0.0 0 0 0 1) -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 Refer
34、ence 0.5 Reference 0.5 Reference 0.5 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
35、uniform PAS. RMS angle 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
36、 0.5-spacing or 4-spacing or 10-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
37、 proposed in 3GPP and 3GPP2 ad-hoc groups. ETSI ETSI TR 125 996 V13.1.0 (2017-01)83GPP TR 25.996 version 13.1.0 Release 134.3 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 ar
38、e assumed independent. These assumptions apply to both the BS and the MS specific spatial 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, alt
39、hough details of a given configuration must be shared to allow others to reproduce the model 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 elemen
40、t spacing is 0.5, where is the wavelength of the carrier frequency. At the BS, three values for reference element spacing are defined: 0.5, 4, and 10. 4.5 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 plott
41、ed in Figure 4.1 and is specified by ()23min 12 , where 180 180mdBAA= (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 scenario dB3 is 70 degrees, =mA20dB,and the
42、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 direction to which the antenna shows the maximum
43、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. large inter-element spacings). For beamforming
44、 applications that require small spacings, alternative antenna designs may have to be considered leading to a different antenna pattern. ETSI ETSI TR 125 996 V13.1.0 (2017-01)93GPP TR 25.996 version 13.1.0 Release 13Figure 4.1: Antenna pattern for 3-sector cells Antenna Boresight in direction of arr
45、ow 3-Sector Scenario BS Figure 4.2: Boresight pointing direction for 3-sector cells -25-20-15-10-50-120 -100 -80 -60 -40 -20 0 20 40 60 80 100 120Gain in dB. Azimuth in Degrees3 Sector Antenna PatternETSI ETSI TR 125 996 V13.1.0 (2017-01)103GPP TR 25.996 version 13.1.0 Release 13Figure 4.3: Antenna
46、pattern for 6-sector cells Antenna Boresight in direction of arrow 6-Sector Boundaries BS Figure 4.4: Boresight pointing direction for 6-sector cells 4.5.2 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 p
47、ath“s 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
48、degrees at AoD 20 degrees It should be noted that attention should be paid when comparing the link level performance between the two angle spread values since the BS antenna gain for the two corresponding AoDs will be different. The BS antenna gain is applied to the path powers specified in Table 4.
49、1. -25-20-15-10-50-60-50-40-30-20-100 102030405060Gain in dBAzimuth in Degrees6 Sector Antenna PatternETSI ETSI TR 125 996 V13.1.0 (2017-01)113GPP TR 25.996 version 13.1.0 Release 134.5.3 Per-path BS angle of departure The Angle of Departure (AoD) is defined to be the mean angle with which an arriving or departing path“s power is received or transmitted by the BS array with respect to the boresite. The two values considered are: - AoD: 50 degrees (associated with the RMS Angle Spread of 2 degrees) - AoD: 20 de
