1、 ETSI GR mWT 010 V1.1.1 (2018-04) 3D RayTracing Interference Analysis in V-Band Disclaimer The present document has been produced and approved by the millimetre Wave Transmission (mWT) ETSI Industry Specification Group (ISG) and represents the views of those members who participated in this ISG. It
2、does not necessarily represent the views of the entire ETSI membership. GROUP REPORT ETSI ETSI GR mWT 010 V1.1.1 (2018-04)2 Reference DGR/mWT-0010 Keywords 3D ray-tracing, 60 GHz, FWA, interference analysis, listen before talk, mWT, network performance, V-band ETSI 650 Route des Lucioles F-06921 Sop
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8、foregoing restriction extend to reproduction in all media. ETSI 2018. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTETMare trademarks of ETSI registered for the benefit of its Members and of the 3GPP O
9、rganizational Partners. oneM2M logo is protected for the benefit of its Members. GSMand the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI GR mWT 010 V1.1.1 (2018-04)3 Contents Intellectual Property Rights 5g3Foreword . 5g3Modal verbs terminology 5g3Executive summary
10、5g3Introduction 6g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Abbreviations . 8g34 System model for 3D RayTracing simulations 9g35 3D RayTracing interference analysis . 10g35.1 Washington simulation scenario . 10g35.1.1 Simulation cases . 10g35.1.2 Mesh
11、network topology at street level 11g35.1.3 Simulation method and results 12g35.1.4 Street to roof network topology 13g35.1.5 Additional WiGig interferers 14g35.1.6 Long street paths . 15g35.2 Shanghai, China simulation scenario 18g35.2.1 Roof-to-roof 18g35.2.2 Nodal specific case . 19g36 2D interfer
12、ence analysis . 21g36.1 Rooftop deployment scenario simulation . 21g36.2 Street-level deployment scenario simulation 25g37 3-D RayTracing Simulations of Outdoor Coexistence in V-band 27g37.1 Suitability of V-Band for FWA use case 27g37.1.1 Introduction. 27g37.1.2 San Jose simulation scenario 28g37.1
13、.3 FWA link characteristics 28g37.1.4 FWA C/I simulation results 28g37.2 Coexistence of FWA and Fixed Services (FS) in the V-band 29g37.2.1 Analysis 29g37.2.2 FS Exclusion zone analysis . 29g37.2.3 Statistical analysis . 30g37.2.4 Section of San Jose deployment . 32g37.2.4.1 Introduction . 32g37.2.4
14、.2 Scenario 1a 32g37.2.4.3 Scenario 1b: FS links perpendicular to street 32g37.2.4.4 Scenario 2: directed BF at FWA nodes . 33g37.3 San Jose simulation conclusion 34g38 Distribution Networks and Short Range Devices Coexistence 34g38.1 Overview 34g38.2 Outdoor to indoor penetration with DN to CN tran
15、smission . 35g38.3 Outdoor to indoor penetration with CN to DN 37g38.4 Outdoor to indoor penetration with CN to DN summary 39g39 Network Analysis . 40g310 Listen Before Talk 41g310.1 Overview 41g3ETSI ETSI GR mWT 010 V1.1.1 (2018-04)4 10.2 System model . 41g310.3 Simulation results . 42g3Annex A: Ne
16、twork simulation parameters 44g3A.1 Parameter definition . 44g3A.2 Simulation assumptions 44g3Annex B: mmWV FWA . 47g3B.1 Overview 47g3Annex C: Authors Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updat
17、es are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, 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 serve
18、r) which are, or may be, or may become, essential to the present document. Trademarks The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners. ETSI claims no ownership of these except for any which are indicated as being the property of ETSI
19、, and conveys no right to use or 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 Group Report (GR) has been produced by ETSI
20、 Industry Specification Group (ISG) millimetre Wave Transmission (mWT). 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
21、expression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. Executive summary The simulation results, reported in the present document, upon the Mesh network model for FWA, provide a positive feedback to deploy this outdoor application i
22、n V-Band. It is shown that it is possible to run a network with only one frequency channel with high throughput (1,6 Gbps per link and a total 6,6 Gbps when the traffic generated from four equipment reach the fibre point of presence) and relative small delay (The performance is reached when the last
23、 link capacity is not exceeded.). Further simulations show that high density networks can be deployed at low interference level by using steerable antenna and that on a Manhattan Grid topology the interference level experienced by using fixed beam antenna or steerable antenna is practical the same.
24、It has been shown that FWA links operating in V-Band can coexist well by using the same frequency channel (i.e. reuse-1) provided proper timing synchronization, assignment of TX/RX roles and working TPC. In addition, also outdoor coexistence studies between FWA and FS applications are presented and
25、collocated FWA links affect FS links in relatively small percent of cases (mostly below 10 %). Exclusion zones for FS links are meaningless for street level deployments since reflections from interfering signal outside of the exclusion zone can bring interfering signal back to the receiver. It is al
26、so confirmed that mmWV distribution network STAs do not harm indoor operation. ETSI ETSI GR mWT 010 V1.1.1 (2018-04)6 Finally, it is shown that LBT can guaranteed good performance in term of Average Transmit Capacity by allowing fair spectrum usage too. Introduction V-Band communication links are fo
27、reseen to be used for both access and transport applications. Access applications, which are the main subject of the present document, include street level connectivity, urban/suburban fixed broadband residential access and business connectivity. They are widely known as Fixed Wireless Access (FWA).
28、 Transport applications include connecting devices such as Wi-Fi access-point and smart-city sensor. These applications are compatible with V-Band equipment short range and small foot print characteristics used for FWA, which make street level installations using either P2P or P2MP topology possible
29、. V-Band equipment may also be used in rooftop to street connectivity, for access applications and as a feeding point for street-level chains. The links range using beam-steering antennas is limited due to their relatively low gain to about 200 m (typical), and is additionally restricted by the avai
30、lability of clear line-of-sight i.2. Link operation is strongly protected from interference by line-of-sight blockage (typically by structures and foliage) and by Oxygen absorption which reaches at maximum 15 dB/km in the band (around 59 GHz). There are also secondary protection mechanisms such as t
31、he antenna spatial filtering, i.e. the low transmit power spread across wide bandwidth, leading to low spectral power density and robust modulation schemes typically being used. NOTE: To circumvent residual interference and enhance operation reliability, sharing algorithms such as dynamic frequency
32、selection (DFS) and listen before talk (LBT) medium access protocols may be deployed but are not object of the present document. ETSI ETSI GR mWT 010 V1.1.1 (2018-04)7 1 Scope The present document presents results of an interference analysis, carried on parts of a real city scenarios, supported by a
33、 3D ray tracing SW tool. Also, network capacity, delay and LBT performance evaluations are provided for specific simulation cases. A focus has been put on the new usage model called “mmWave Distribution Network“, also known as “Mesh Network“, as recently proposed by IEEE 802.11 i.1 in July 2017. 2 R
34、eferences 2.1 Normative references Normative references are not applicable in the present document. 2.2 Informative references References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version a
35、pplies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee their long term validity. The following referenced documents are not
36、necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 IEEE 802.11-2015/0625r5: “IEEE 802.11 TGay Use Cases“, July 2017. NOTE: Available at https:/mentor.ieee.org/802.11/dcn/15/11-15-0625-07-00ay-ieee-802-11-tgay-usage-scenarios.p
37、ptx. i.2 CEPT ECC SRD/MG SRDMG(17)062 19 April 2017: “60 GHz considerations for discussion“ (Huawei contribution). i.3 IEEE 802.11ad-2016: “IEEE Standard for Information technology-Telecommunications and information exchange between systems-Local and metropolitan area networks-Specific requirements-
38、Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications Amendment 3: Enhancements for Very High Throughput in the 60 GHz Band“. i.4 M. Zaaimia, R. Touhami, A. Hamza and M. C. E. Yagoub: “Design and performance evaluation of 802.11ad phys in 60 GHz multipath fading c
39、hannel“, International Workshop on Systems, Signal Processing and their Applications (WoSSPA) 2013 8thAlgiers, pp. 521-525. i.5 ETSI EN 302 217-2 (V3.1.1) (05-2017): “Fixed Radio Systems; Characteristics and requirements for point-to-point equipment and antennas; Part 2: Digital systems operating in
40、 frequency bands from 1 GHz to 86 GHz; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“. i.6 Recommendation ITU-R F.699-7 (04-2006): “Reference radiation patterns for fixed wireless system antennas for use in coordination studies and interference assess
41、ment in the frequency range from 100 MHz to about 70 GHz“. i.7 CEPT ECC ERC Report 173: “Fixed Service in Europe Current use and future trends post 2011“ and revisions. i.8 ETSI GS mWT 004 (V1.1.1) (06-2016): “Millimetre Wave Transmission (mWT); V-band street level interference analysis“. ETSI ETSI
42、GR mWT 010 V1.1.1 (2018-04)8 i.9 CEPT ECC ERC Recommendation 70-03 : “Relating to the use of Short Range Devices (SRD)“. i.10 ETSI EN 302 567 (V2.1.1) (07-2017): “Multiple-Gigabit/s radio equipment operating in the 60 GHz band; Harmonised Standard covering the essential requirements of article 3.2 o
43、f Directive 2014/53/EU“. i.11 European Commission, Broadband strategy & policy. NOTE: Available at https:/ec.europa.eu/digital-single-market/en/broadband-strategy-policy. i.12 IEEE P802.11 - Task Group ay - Meeting Update. NOTE: Available at http:/www.ieee802.org/11/Reports/tgay_update.htm. 3 Abbrev
44、iations For the purposes of the present document, the following abbreviations apply: A-BFT Association Beam-Forming Training AG Aktiengesellschaft NOTE: German: Stock Corporation. AP Access Point ATPC Automatic Transmission Power Control BER Bit Error Ratio BF Beam Forming BI Beacon Interval BS Base
45、 Station BTI Beacon Transmission Interval BW BandWidth CBAP Contention-Based Access Period CCA Clear Channel AssessmentCDF Cumulative Distribution Function CN Client Node DFS Dynamic Frequency Selection DL Down Link DN Distribution Node DOA Direction Of ArrivalDOD Direction Of Departure DTI Data Tra
46、nsfer Interval eCCA extended Clear Channel Assessment ED Energy Detection (threshold) EIRP Effective Isotropic Radiated Power FBR Front to Back Ratio (antenna parameter) FCC Federal Communication Commission FS Fixed Service FWA Fixed Wireless Access HPBW Half Power Beam Width I Interference (i.e. in
47、terference signal both single or aggregate) IAP Interferer Access Point LBT Listen Before Talk LOS Line Of Sight MAC Medium Access Control (Layer) MCS Modulation and Coding Scheme MDU Multi-Dwelling UnitmmWV millimetre WaVeMP Multi-Point MPDU MAC Protocol Data Unit NF Noise Figure NFD Net Filter Dis
48、crimination NLOS Non-Line Of Sight ETSI ETSI GR mWT 010 V1.1.1 (2018-04)9 P2MP Point to Multi-Point P2P Point to Point PD Power Detection (threshold) PEC Perfect Electromagnetic Conductor PHY Physical PMP Point-Multi-Point POP Point Of Presence PtMP Point to Multi-Point PtP Point to Point QPSK Quadr
49、ature Phase-Shift Keying RF Radio Frequency RPE Radiation Pattern Envelope RT Remote Terminal RX ReceiverS Signal (i.e. wanted signal) S/I Signal to Interference ratio SINR Signal to Interference and Noise Ratio SNR Signal to Noise Ratio SP Service Period SRD Short Range Device STA STAtion (node) SW Software TD Threshold Degradation TDD Time Division Duplex TPC Transmission Power Control TRN-T/R Transmit or Receive Training TS Time SlotTX Transmitter U Number of interference links UL Up Link WiGig Wireless Gigabit Alliance 4 System model for
