1、 Recommendation ITU-R M.2101-0 (02/2017) Modelling and simulation of IMT networks and systems for use in sharing and compatibility studies M Series Mobile, radiodetermination, amateur and related satellite services ii Rec. ITU-R M.2101-0 Foreword The role of the Radiocommunication Sector is to ensur
2、e the rational, equitable, efficient and economical use of the radio-frequency spectrum by all radiocommunication services, including satellite services, and carry out studies without limit of frequency range on the basis of which Recommendations are adopted. The regulatory and policy functions of t
3、he Radiocommunication Sector are performed by World and Regional Radiocommunication Conferences and Radiocommunication Assemblies supported by Study Groups. Policy on Intellectual Property Right (IPR) ITU-R policy on IPR is described in the Common Patent Policy for ITU-T/ITU-R/ISO/IEC referenced in
4、Annex 1 of Resolution ITU-R 1. Forms to be used for the submission of patent statements and licensing declarations by patent holders are available from http:/www.itu.int/ITU-R/go/patents/en where the Guidelines for Implementation of the Common Patent Policy for ITU-T/ITU-R/ISO/IEC and the ITU-R pate
5、nt information database can also be found. Series of ITU-R Recommendations (Also available online at http:/www.itu.int/publ/R-REC/en) Series Title BO Satellite delivery BR Recording for production, archival and play-out; film for television BS Broadcasting service (sound) BT Broadcasting service (te
6、levision) F Fixed service M Mobile, radiodetermination, amateur and related satellite services P Radiowave propagation RA Radio astronomy RS Remote sensing systems S Fixed-satellite service SA Space applications and meteorology SF Frequency sharing and coordination between fixed-satellite and fixed
7、service systems SM Spectrum management SNG Satellite news gathering TF Time signals and frequency standards emissions V Vocabulary and related subjects Note: This ITU-R Recommendation was approved in English under the procedure detailed in Resolution ITU-R 1. Electronic Publication Geneva, 2017 ITU
8、2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without written permission of ITU. Rec. ITU-R M.2101-0 1 RECOMMENDATION ITU-R M.2101-0 Modelling and simulation of IMT networks and systems for use in sharing and compatibility studies (2017) Scope This
9、 Recommendation contains the methodology for modelling and simulation of IMT1 networks for use in sharing and compatibility studies between IMT and other systems and/or applications. As such, it does not make any assumptions on the system parameters or modelling of these other systems and/or applica
10、tions and is strictly limited to providing information for the IMT systems. Keywords IMT, IMT-Advanced, mobile systems, sharing/compatibility issues Related Recommendations and Reports Recommendation ITU-R M.2012 Detailed specifications of the terrestrial radio interfaces of International Mobile Tel
11、ecommunications Advanced (IMT-Advanced) Report ITU-R M.2292 Characteristics of terrestrial IMT-Advanced systems for frequency sharing/interference analyses The ITU Radiocommunication Assembly, considering a) that Question ITU-R 229/5 addresses further development of the terrestrial component of IMT
12、and the relevant studies under this Question are in progress within ITU-R; b) that Resolution 223 (Rev. WRC-15) invites ITU-R to conduct a number of compatibility studies between IMT systems and other systems and/or applications; c) that Resolution 238 (WRC-15) resolves to invite ITU-R to conduct ap
13、propriate sharing and compatibility studies between IMT systems and other systems and/or applications in a number of frequency bands; d) that development of new radio interfaces that support the new capabilities of IMT-2020 is expected along with the enhancement of IMT-2000 and IMT-Advanced systems,
14、 consistent with Resolution ITU-R 57-2; e) that methodologies for the modelling and simulation of IMT networks are needed to analyse compatibility between IMT systems and systems in other services; f) that an accurate description of simulation of the transmissions of IMT networks, including the calc
15、ulation of the aggregate effect, is required to realistically model IMT systems in sharing and compatibility scenarios, 1 References to IMT in this Recommendation addresses modelling of IMT-Advanced and IMT-2020 networks. 2 Rec. ITU-R M.2101-0 recognizing a) that Report ITU-R M.2292 provides the cha
16、racteristics of terrestrial IMT-Advanced systems for frequency sharing/interference analyses; b) that Recommendation ITU-R M.2012 contains the detailed specifications of the terrestrial radio interfaces of International Mobile Telecommunications Advanced (IMT-Advanced); c) that Recommendations ITU-R
17、 M.2070 and ITU-R M.2071 provide the generic unwanted emission characteristics of base stations and mobile stations respectively, using the terrestrial radio interfaces of IMT-Advanced, recommends that the modelling and simulation of IMT networks and systems for use in sharing and compatibility stud
18、ies should be based on the methodology contained in Annex 1; List of abbreviations: ACIR adjacent channel interference power ratio ACLR adjacent channel leakage power ratio ACS adjacent channel selectivity AAS advanced antenna system BS base station D2D device-to-device eMBB enhanced mobile broadban
19、d FD full-dimension FDR frequency dependent rejection HO handover M2M machine-to-machine MTC machine-type communications mMTC massive machine-type communications MIMO Multiple Input Multiple Output MBB mobile broadband OOB Out-of-band OOBE out-of-band emission RB resource block RF radio frequency UE
20、 user equipment URLLC ultra-reliable and low latency communications Rec. ITU-R M.2101-0 3 Annex 1 Methodology for modelling and simulation of IMT networks for use in sharing and compatibility studies Annex 1 3 1 Introduction 4 2 Definitions and basic concepts . 4 2.1 Usage scenarios 4 2.2 Deployment
21、 scenarios . 5 2.3 Transmit power control . 7 2.4 Advanced antenna technology and characteristics . 7 2.5 Antenna height and environment structures . 7 2.6 Density and distribution of stations 7 2.7 Propagation models 8 2.8 Repeaters for indoor coverage 8 2.9 Protection criteria for IMT 8 3 Simulati
22、on set up 8 3.1 Network topology . 8 3.2 Modelling of IMT networks for interference calculation . 13 3.3 FDD/TDD networks . 15 3.4 Simulation Methodology 15 4 Implementation of IMT User Equipment (UE) power control . 24 4.1 Power control algorithm . 25 5 Implementation of IMT Base Station (BS) and U
23、ser Equipment (UE) Beamforming Antenna Pattern 25 6 Implementation of IMT traffic information 28 7 Determination of aggregate interference 29 8 Demonstration of interim results of IMT modelling 30 9 References 30 Attachment 1 to Annex 1 . 32 Attachment 2 to Annex 1 . 33 4 Rec. ITU-R M.2101-0 1 Intro
24、duction This Annex contains the methodology for modelling and simulation of IMT networks for use in sharing and compatibility studies. It describes the appropriate IMT models to be used for sharing and compatibility studies between IMT and other radio systems in various frequency bands. Definitions
25、and basic concepts of IMT networks are described in 2 to facilitate selection of the appropriate IMT model. Section 2 also provides information on technical elements such as output power and antenna pattern, antenna height and environment associated with deployment scenarios, density and distributio
26、n of IMT stations and information on propagation models for paths between IMT base stations and mobile stations. It contains detailed IMT system parameters to be considered in such modelling and their implementation in the simulations as described in 3 through 6. Specifically, 3 contains simulation
27、steps for modelling total emissions generated by an IMT network (in the case IMT is the interfering system) as well as modelling the impact on the IMT network (in the case IMT is the interfered-with system). Subsequently, considerations in calculating the aggregate effect of potential interference g
28、enerated by an IMT system is described in 7. Furthermore, in order to emphasize the importance of realistically modelling IMT systems in sharing and compatibility scenarios, 8 describes means to compare the implementation of modelling of IMT system through comparing interim results related to perfor
29、mance and operation of the IMT system. 2 Definitions and basic concepts 2.1 Usage scenarios IMT-Advanced is the most widely accepted radio air-interface for the provision of mobile broadband (MBB). The IMT-2020 radio interface, in addition to supporting the enhanced mobile broadband (eMBB) use case,
30、 will support emerging use cases with a variety of applications such as massive machine-type communications (mMTC) and ultra-reliable and low latency communications (URLLC). The methodology is applicable for all the above scenarios and focuses mostly on MBB and eMBB scenarios, which are the dominant
31、 usage scenarios in sharing and compatibility studies. Mobile broadband and enhanced mobile broadband are the result of applying more spectrally efficient technologies into larger amounts of spectrum, enabling higher data rate services. Massive machine-type communication is about connectivity for la
32、rge numbers of low-cost and low-energy consumption devices in the context of the Internet of Things (IoT). Ultra-reliable and low latency communications are envisioned to enable real-time control and automation of dynamic processes in various fields, such as industrial process automation and manufac
33、turing, energy distribution, intelligent transport systems and requires communication with very high reliability and availability, as well as very low end-to-end latency. Device-to-device (D2D) and machine-to-machine (M2M) communications may be used for mMTC and URLLC applications. In D2D/M2M commun
34、ications, mobile stations initiate communications with base stations using their control channel. User data traffic is delivered by data channel directly among mobile stations. In this scenario, mobile stations are located within a cell area provided by a base station. Rec. ITU-R M.2101-0 5 2.2 Depl
35、oyment scenarios From a deployment perspective, it is worthwhile categorizing IMT-Advanced and IMT-2020 radio access networks as either outdoor or indoor and as seamless wide area coverage or small area coverage. Table 1 provides a high level description of IMT deployments. Categories 1 and 2 are th
36、e same as the existing configuration of IMT networks with seamless macro coverage. Categories 3 and 4 for coverage of small areas could be operated independently or combined with categories 1 and 2. TABLE 1 Categories of radio access networks MS Location Seamless wide area coverage Small area covera
37、ge Outdoor MS Category 1 Conventional Macro Cell (Omni, Sector Antenna, Beam forming Antenna) Category 3 Outdoor Small Area Coverage (Omni, Sector Antenna, Beam forming antenna) Indoor MS Category 2 Coverage by Outdoor Macro Cell (Omni, Sector Antenna, Beam forming Antenna) Category 4 Indoor Small A
38、rea Coverage (Omni, Sector Antenna, Beam forming antenna) Furthermore, radio access networks may be classified to each deployment scenario by considering the following aspects: a) environments (Rural / Suburban / Urban / Indoor); b) seamless wide area coverage / Small area coverage. Six deployment s
39、cenarios are defined in Table 2 as combinations of the above aspects a) and b). Three deployment scenarios of macro rural, macro suburban and macro urban are the same as the existing configuration of IMT networks with seamless macro coverage. The other three deployment scenarios of micro suburban, m
40、icro urban and indoor are deployed to cover small areas. The latter three deployment scenarios could be operated independently in some cases, whereas it could be often the case that they are operated combined with the former three deployment scenarios. The classification of deployment scenarios in T
41、able 2 is applicable to relevant IMT models and associated propagation environments to apply appropriate IMT modelling for sharing studies. TABLE 2 Deployment scenarios of radio access networks Base station location Seamless wide area coverage Small area coverage Rural Macro rural Not applicable Sub
42、urban Macro suburban Micro suburban Urban Macro urban Micro urban Indoor Not applicable Indoor 6 Rec. ITU-R M.2101-0 An illustration of possible scenarios is provided in Fig. 1 and further described below. FIGURE 1 Example deployment scenarios M . 2 1 0 1 - 0 1M a c r o s e l lM i c r o s u b u r b
43、a nM i c r o u r b a nI n d o o rS m a l l a r e ac o v e r a g eM a c r o r u r a l M a c r o s u b u r b a n M a c r o u r b a n(1) Macro rural The rural deployment scenario focuses on larger and continuous wide area coverage. Base station antennas are typically deployed at the top of tower. (2) M
44、acro suburban The macro suburban scenario focuses on seamless coverage of suburban areas (mainly residential) as well as rural towns with low-rise buildings, but not including the unpopulated areas between them. Base station antennas are typically deployed on tower/rooftop and users can be either ou
45、tdoors and indoors. (3) Macro urban The macro urban scenario focuses on multi-story buildings with base station antennas typically at or above the level of the roofline. Base station power may vary depending on local deployment and coverage needs. Users can either be outdoors or indoors. Repeaters f
46、or indoor coverage, if any, are considered equivalent to, and therefore treated as, user equipment (UEs). (4) Micro suburban The micro suburban scenario focuses on capacity enhancement in small community areas with low-rise buildings in suburban areas. Base station antennas are typically deployed mo
47、unted on poles. Users can either be outdoors or indoors. Repeaters for indoor coverage, if any, are considered equivalent to, and therefore treated as, UEs. (5) Micro urban The micro urban scenario focuses on multi-story buildings with base station antennas below the roofline. Base station antennas
48、are typically deployed as single sector antennas or beam forming antennas with low output power. The deployment scenario has an environment that blocking and/or multiple diffractions/scattering are dominant near the antennas, such as street micro cell and small hot spot, from the viewpoint of propag
49、ation effects. Users can either be outdoors and indoors. Rec. ITU-R M.2101-0 7 (6) Indoor The indoor scenario occurs most often in urban or suburban environments. Base stations and users are indoors. 2.3 Transmit power control Studies to assess the impact of an entire IMT network should take into account the varying nature of an IMT network, in particular power control. For uplink, some device types (e.g. low power devices for MTC applications) may operate without any power control while for other types (e.g. enhanced mobile broadband devices) power control wi
