1、 ETSI TR 145 913 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Optimized transmit pulse shape for downlink Enhanced General Packet Radio Service (EGPRS2-B) (3GPP TR 45.913 version 15.0.0 Release 15) TECHNICAL REPORT GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI T
2、R 145 913 V15.0.0 (2018-07)13GPP TR 45.913 version 15.0.0 Release 15Reference RTR/TSGR-0645913vf00 Keywords GSM 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 enregi
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9、ssociation. ETSI ETSI TR 145 913 V15.0.0 (2018-07)23GPP TR 45.913 version 15.0.0 Release 15Intellectual Property Rights Essential patents IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is p
10、ublicly 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 E
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12、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, and conveys no right to
13、 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 Technical Report (TR) has been produced by ETSI 3rd Generation Partn
14、ership 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 id
15、entities 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 the ETSI Drafting Rules (Verbal forms for the exp
16、ression of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 145 913 V15.0.0 (2018-07)33GPP TR 45.913 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Intro
17、duction 6g31 Scope 7g32 References 8g33 Definitions, symbols and abbreviations . 9g33.1 Definitions 9g33.2 Symbols 9g33.3 Abbreviations . 9g34 Objectives . 10g34.1 Performance objectives 10g34.1.1 Data throughput improvements . 10g34.2 Compatibility objectives . 10g34.2.1 Maintenance of voice qualit
18、y 10g34.2.2 Data throughput 10g34.2.3 Implementation impacts to new Mobile Stations 10g34.2.4 Implementation impacts to BSS 10g34.2.5 Impacts to network planning . 10g34.2.6 Compatibility with Multi-User Reusing-One-Slot (MUROS) 10g35 Study item pre-requisites 11g35.1 Introduction 11g35.2 Preliminar
19、y boundary conditions for pulse shape optimisation 11g35.2.1 Introduction. 11g35.2.2 Time domain . 11g35.2.3 Frequency domain 11g35.3 Network configurations for pulse shape evaluation . 11g35.4 Legacy MS Rx filter working assumption 13g35.5 Legacy MS type . 13g36 Network level analysis . 14g36.1 Int
20、roduction 14g36.2 Network scenarios and simulation assumptions . 14g36.2.1 Resource allocation . 14g36.3 Link to system interface . 15g36.4 Interference statistics 15g36.5 Interference profile for link level analysis 15g36.5.1 Results 16g37 Pulse shape optimisation 17g37.1 Introduction 17g37.2 Candi
21、date pulse shapes from 4 17g37.2.1 Optimisation assumptions. 17g37.2.2 Results 17g37.2.2.1 Spectrum . 17g37.2.2.2 Adjacent channel protection 19g38 Link level studies . 19g38.1 Introduction 19g38.2 Link to system interface . 20g38.2.1 Introduction. 20g38.2.2 Simulation assumptions 20g38.2.3 Link lev
22、el performance . 20g3ETSI ETSI TR 145 913 V15.0.0 (2018-07)43GPP TR 45.913 version 15.0.0 Release 158.2.4. Legacy voice receiver . 22g38.2.4.1 Front-end filter 22g38.2.5 EGPRS2 receiver 22g38.2.5.1 Introduction . 22g38.2.5.3 Candidate pulse #2 23g38.2.5.4 Candidate pulse #3 26g38.2.5.5 Receiver nois
23、e . 29g38.2.5.6 First Stage Mapping (CIR to BER) . 29g38.2.5.7 Second Stage Mapping (BER to BLER) . 31g38.2.5.8 Second Stage Mapping for Non-hopping Channel 35g39 System level studies . 39g39.1 Introduction 39g39.2 System Performance Evaluation . 39g39.2.1 Evaluation method 39g39.2.2 System performa
24、nce results 39g39.2.2.1 Evaluation method 39g39.2.2.2 Impact on speech quality . 41g39.2.2.3 Impact on data throughput 42g310 Summary 46g311 Conclusion 47g3Annex A: Candidate pulse shape coefficients 48g3A.1: Candidate pulse shapes from 4 48g3Annex B: Network statistics 50g3B.1 CDFs for Scenario A 5
25、0g3B.2 CDFs for Scenario B 51g3B.3 CDFs for Scenario C 53g3B.4 CDFs for Scenario D 54g3B.5 Noise CDFs for all scenarios 56g3Annex C: Change history 57g3History 58g3ETSI ETSI TR 145 913 V15.0.0 (2018-07)53GPP TR 45.913 version 15.0.0 Release 15Foreword This Technical Report has been produced by the 3
26、rdGeneration 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 releas
27、e 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 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. te
28、chnical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. ETSI ETSI TR 145 913 V15.0.0 (2018-07)63GPP TR 45.913 version 15.0.0 Release 15Introduction The EGPRS2-B feature has been included into GERAN Rel-7 wi
29、th the legacy GMSK pulse shape. This pulse shape yields good performance and can be used without any requirements on the operator network scenario. Initial analysis have shown that in certain network scenarios, a spectrally wider pulse shape can improve data throughput performance further. To obtain
30、 superior data throughput performance, investigation of a wider pulse shape is needed, including the network scenarios that will benefit from a wider pulse shape. Selection of either the legacy pulse shape or the new pulse shape will be under operator control. It is not clear to what degree the curr
31、ent spectral mask can be widened without causing a detrimental impact on legacy mobile stations in these networks. It is also not clear if a spectral mask relaxation is dependent on the modulation transmitted or whether it can be assumed to be applicable for all modulations. It is important to conti
32、nue to improve the GERAN system performance with new features, and as such it is relevant that this topic is carefully and independently studied. ETSI ETSI TR 145 913 V15.0.0 (2018-07)73GPP TR 45.913 version 15.0.0 Release 151 Scope The present document is an output of the 3GPP study item “Optimized
33、 Transmit Pulse Shape for Downlink EGPRS2-B“ (“WIDER“) 2, the objective of which is to optimise pulse shapes based on optimization criteria to be agreed by TSG GERAN WG1, and provide an evaluation of the optimized pulse shapes in a similar manner as was used in the SAIC feasibility study TR 45.903 3
34、. ETSI ETSI TR 145 913 V15.0.0 (2018-07)83GPP TR 45.913 version 15.0.0 Release 152 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
35、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
36、 version of that document in the same Release as the present document. 1 3GPP TR 21.905: “Vocabulary for 3GPP Specifications“. 2 3GPP TDoc GP-072026: “WID Optimized Transmit Pulse Shape for Downlink EGPRS2-B“. 3 3GPP TR 45.903: “Feasibility Study on Single Antenna Interference Cancellation (SAIC) fo
37、r GSM networks“. 4 “Candidate Pulse Shapes for WIDER“, Nokia Siemens Networks average call FER 2 % for at least 95 % users in case of network scenarios WIDER-1 (see section 5.3). 4.2.2 Data throughput The introduction of the wide bandwidth pulse shall increase overall network throughput. 4.2.3 Imple
38、mentation impacts to new Mobile Stations The introduction of the wide bandwidth pulse should change MS hardware as little as possible. 4.2.4 Implementation impacts to BSS The introduction of the wide bandwidth pulse should change BSS hardware as little as possible. 4.2.5 Impacts to network planning
39、Criteria for definition of minimum call quality performance for this objective is defined in section 4.2.1. The study shall take into consideration the usage of wide pulse shape at the band edge, at the edge of an operators band allocation and in country border regions where no frequency coordinatio
40、n are in place. The wide pulse is expected to fulfil the same adjacent channel protection requirements as the linearised GMSK pulse at the 400 kHz offset and higher (see Section 5.2.3). When EGPRS2-B is used on a frequency which is adjacent (at a 200 kHz offset) to a frequency which is uncoordinated
41、 (see above), then the linearised GMSK pulse shall be used. 4.2.6 Compatibility with Multi-User Reusing-One-Slot (MUROS) The feature Optimized Transmit Pulse Shape for Downlink EGPRS2-B (WIDER) and the feature Multi-User Reusing-One-Slot (MUROS) will be studied independently but that compatibility o
42、f both features will be investigated after completion of the feasibility studies and before the corresponding work items are agreed. ETSI ETSI TR 145 913 V15.0.0 (2018-07)113GPP TR 45.913 version 15.0.0 Release 155 Study item pre-requisites 5.1 Introduction Pre-requisites to the study are identified
43、 as follows: Preliminary boundary conditions for pulse shape optimisation, where more than one set of boundary conditions may be considered in order to derive a selection of pulse shape candidates. One or more network configurations for pulse shape evaluation. These shall be representative of the mo
44、st likely EGPRS2 deployment strategies. A legacy Rx filter working assumption. 5.2 Preliminary boundary conditions for pulse shape optimisation 5.2.1 Introduction Boundary conditions are needed to define the scope of the optimisation. The boundary conditions will also allow a pre-selection at the li
45、nk level if more than one pulse shape is optimised against the same set of boundary conditions. Only when the system evaluation is complete will it be known if the boundary conditions were realistically set, therefore it is proposed to denote these as preliminary boundary conditions. If they were se
46、t too loose or too tight, then a further iteration of the study might be necessary. In general, the same procedure will be used for the optimisation of the EGPRS2-B wide pulse shape on the DL as for the EGPRS2-B wide pulse shape on the UL. 5.2.2 Time domain The length of the optimised pulse shape sh
47、all not be longer than 6 reduced symbol periods. This is to avoid an increase in delay spread which the MS equaliser needs to cope with. 5.2.3 Frequency domain The adjacent channel protection of the optimised pulse shape (including Tx impairments) shall be: - 50 dB at the 400 kHz offset - 58 dB at t
48、he 600 kHz offset Measurements performed by network vendors will verify that these criteria can be met for each candidate pulse shape. For the 200 kHz offset, any criterion may be considered in the pulse shape optimisation given that this criterion will be verified by the System level studies (Secti
49、on 9). If an adjacent channel at the 200 kHz offset is used by a different operator (i.e. no guard band exists), then the linearised GMSK pulse would be the default on the allocations edge channels. 5.3 Network configurations for pulse shape evaluation The network configurations that shall be used to evaluate the optimised pulse shapes are given in Table 5.1 and 5.2. ETSI ETSI TR 145 913 V15.0.0 (2018-07)123GPP TR 45.913 version 15.0.0 Release 15Table 5.1: Configuration specific assumptions Parameter WIDER-1 WIDER-2 WIDER-3 Frequency band 900 MHz 900 MHz 90
