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TR 136 932 V12 1 0 LTE Scenarios and requirements for
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3GPP TR 36 932 version 12 1 0 Release 12 1 ETSI TR 136 932 V12 1 0 2014 10. DTR TSGR 0036932vc10,650 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 enregistr e la,Sous Pr fecture de Grasse 06 N 7803 88. Important notice,The present document can be downloaded from. http www etsi org, The present document may be made available in electronic versions and or in print The content of any electronic and or.
print versions of the present document shall not be modified without the prior written authorization of ETSI In case of any. existing or perceived difference in contents between such versions and or in print the only prevailing document is the. print of the Portable Document Format PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at. http portal etsi org tb status status asp, If you find errors in the present document please send your comment to one of the following services. http portal etsi org chaircor ETSI support asp,Copyright Notification. No part may be reproduced or utilized in any form or by any means electronic or mechanical including photocopying. and microfilm except as authorized by written permission of ETSI. The content of the PDF version shall not be modified without the written authorization of ETSI. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2014. All rights reserved, DECT PLUGTESTS UMTS and the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPP and LTE are Trade Marks of ETSI registered for the benefit of its Members and. of the 3GPP Organizational Partners, GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. 3GPP TR 36 932 version 12 1 0 Release 12 2 ETSI TR 136 932 V12 1 0 2014 10. Intellectual 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 000 314 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 http 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. server which are or may be or may become essential to the present document. This Technical Report 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 cross 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 shall shall not should should not may may not need 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 ETSI deliverables except when used in direct citation. 3GPP TR 36 932 version 12 1 0 Release 12 3 ETSI TR 136 932 V12 1 0 2014 10. Intellectual Property Rights 2,Foreword 2,Modal verbs terminology 2. Foreword 4,2 References 5,3 Definitions symbols and abbreviations 5.
3 1 Definitions 5,3 2 Symbols 5,3 3 Abbreviations 5. 4 Introduction 6,5 Objective 6,6 Target scenarios 7. 6 1 Deployment 7,6 1 1 With and without macro coverage 7. 6 1 2 Outdoor and indoor 7,6 1 3 Ideal and non ideal backhaul 8. 6 1 4 Sparse and dense 8,6 1 5 Synchronization 8,6 2 Spectrum 9.
6 3 Traffic 9,6 4 Backward compatibility 9,7 Deployment related requirements 10. 7 1 Deployment use cases 10,7 2 Co existence and interworking 10. 7 3 Core network aspects 10,8 Capability and performance requirements 11. 8 1 System performance 11,8 2 Mobility performance 11. 8 3 Coverage performance 12,9 Operational Requirements 13.
9 1 Architecture 13,9 2 Cost and complexity 13,9 3 Energy efficiency 13. 9 4 Security 13,Annex A Change history 14,History 15. 3GPP TR 36 932 version 12 1 0 Release 12 4 ETSI TR 136 932 V12 1 0 2014 10. This Technical Report has been produced by the 3rd Generation Partnership 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 increase in version number as follows. Version x y z,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 enhancements corrections. updates etc, z the third digit is incremented when editorial only changes have been incorporated in the document.
3GPP TR 36 932 version 12 1 0 Release 12 5 ETSI TR 136 932 V12 1 0 2014 10. The present document contains scenarios and requirements for the small cell enhancement for E UTRA and E UTRAN. 2 References, The following documents contain provisions which through reference in this text constitute provisions of the present. 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 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 Release as the present document, 1 3GPP TR 21 905 Vocabulary for 3GPP Specifications. 2 3GPP TS 36 839 Evolved Universal Terrestrial Radio Access E UTRA Mobility. enhancements in heterogeneous networks, 3 3GPP TR 36 913 Requirements for further advancements for Evolved Universal Terrestrial. Radio Access E UTRA LTE Advanced,3 Definitions symbols and abbreviations.
3 1 Definitions, For the purposes of the present document the terms and definitions given in TR 21 905 1 and the following apply A. term defined in the present document takes precedence over the definition of the same term if any in TR 21 905 1. 3 2 Symbols, For the purposes of the present document the following symbols apply. symbol Explanation,3 3 Abbreviations, For the purposes of the present document the abbreviations given in TR 21 905 1 and the following apply An. abbreviation defined in the present document takes precedence over the definition of the same abbreviation if any in. TR 21 905 1,CDF Cumulative Distribution Function,VoLTE Voice over LTE. 3GPP TR 36 932 version 12 1 0 Release 12 6 ETSI TR 136 932 V12 1 0 2014 10. 4 Introduction, Small cells using low power nodes are considered promising to cope with mobile traffic explosion especially for.
hotspot deployments in indoor and outdoor scenarios A low power node generally means a node whose Tx power is. lower than macro node and BS classes for example Pico and Femto eNB are both applicable Small cell enhancements. for E UTRA and E UTRAN will focus on additional functionalities for enhanced performance in hotspot areas for. indoor and outdoor using low power nodes, This document captures the scenarios and requirements for small cell enhancements 3GPP TR 36 913 3 should be. used as reference whenever applicable in order to avoid duplication of the requirements. 5 Objective,The objectives of this document are as follows. A Define target scenarios for small cell enhancement considering. Deployment scenarios of small cell nodes,Spectrum usage for small cell scenarios. Traffic characteristics in small cell scenarios, B Define requirements for small cell enhancement scenarios considering. System mobility and coverage performance,Core network related aspects.
Cost and energy efficiency aspects,Security aspects. 3GPP TR 36 932 version 12 1 0 Release 12 7 ETSI TR 136 932 V12 1 0 2014 10. 6 Target scenarios,6 1 Deployment, Small cell enhancement should target both with and without macro coverage both outdoor and indoor small cell. deployments and both ideal and non ideal backhaul Both sparse and dense small cell deployments should be. considered See Fig 6 1 1, NOTE 1 F1 and F2 are the carrier frequency for macro layer and local node layer respectively. Figure 6 1 1 Deployment scenarios of small cell with without macro coverage. 6 1 1 With and without macro coverage, As shown in Fig 6 1 1 small cell enhancement should target the deployment scenario in which small cell nodes are. deployed under the coverage of one or more than one overlaid E UTRAN macro cell layer s in order to boost the. capacity of already deployed cellular network Two scenarios can be considered. 1 Where the UE is in coverage of both the macro cell and the small cell simultaneously. 2 Where the UE is not in coverage of both the macro cell and the small cell simultaneously. Figure 6 1 1 also shows the scenario where small cell nodes are not deployed under the coverage of one or more. overlaid E UTRAN macro cell layer s This scenario is also the target of the small cell enhancement Study Item. 6 1 2 Outdoor and indoor, Small cell enhancement should target both outdoor and indoor small cell deployments The small cell nodes could be.
deployed indoors or outdoors and in either case could provide service to indoor or outdoor UEs. For indoor UE only low UE speed 0 3 km h is targeted For outdoor not only low UE speed but also medium UE. speed up to 30km h and potentially higher speeds is targeted. Both throughput and mobility connectivity shall be used as performance metric for both low and medium mobility Cell. edge performance e g 5 tile CDF point for user throughput and power efficiency of both network and UE are also. used as metrics for further study, 3GPP TR 36 932 version 12 1 0 Release 12 8 ETSI TR 136 932 V12 1 0 2014 10. 6 1 3 Ideal and non ideal backhaul, Both ideal backhaul i e very high throughput and very low latency backhaul such as dedicated point to point. connection using optical fiber and non ideal backhaul i e typical backhaul widely used in the market such as xDSL. microwave and other backhauls like relaying should be studied The performance cost trade off should be taken into. A categorization of non ideal backhaul based on operator inputs is listed in Table 6 1 1. Table 6 1 1 Categorization of non ideal backhaul, Backhaul Technology Latency One way Throughput Priority 1 is the highest. Fiber Access 1 10 30ms 10M 10Gbps 1,Fiber Access 2 5 10ms 100 1000Mbps 2. Fiber Access 3 2 5ms 50M 10Gbps 1,DSL Access 15 60ms 10 100 Mbps 1.
Cable 25 35ms 10 100 Mbps 2,Wireless Backhaul 5 35ms 10Mbps 100Mbps typical 1. maybe up to Gbps range, A categorization of ideal backhaul based on operator inputs is listed in Table 6 1 2. Table 6 1 2 Categorization of ideal backhaul, Backhaul Technology Latency One way Throughput Priority 1 is the highest. Fiber Access 4 NOTE 1 less than 2 5 us NOTE2 Up to 10Gbps 1. NOTE 1 This can be applied between the eNB and the remote radio head. NOTE 2 propagation delay in the fiber cable is not included. For interfaces between macro and small cell as well as between small cells the studies should first identify which kind. of information is needed or beneficial to be exchanged between nodes in order to get the desired improvements before. the actual type of interface is determined And if direct interface should be assumed between macro and small cell as. well as between small cell and small cell X2 interface can be used as a starting point. 6 1 4 Sparse and dense, Small cell enhancement should consider sparse and dense small cell deployments In some scenarios e g hotspot. indoor outdoor places etc single or a few small cell node s are sparsely deployed e g to cover the hotspot s. Meanwhile in some scenarios e g dense urban large shopping mall etc a lot of small cell nodes are densely. deployed to support huge traffic over a relatively wide area covered by the small cell nodes The coverage of the small. cell layer is generally discontinuous between different hotspot areas Each hotspot area can be covered by a group of. small cells i e a small cell cluster, Furthermore smooth future extension scalability e g from sparse to dense from small area dense to large area dense.
or from normal dense to super dense should be considered For mobility connectivity performance both sparse and. dense deployments should be considered with equal priority. 6 1 5 Synchronization, Both synchronized and un synchronized scenarios should be considered between small cells as well as between small. cells and macro cell s For specific operations e g in. 3GPP TR 36 932 version 12 1 0 Release 12 ETSI 2 ETSI TR 136 932 V12 1 0 2014 10 Intellectual Property Rights IPRs essential or potentially essential to the present

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