1、 ETSI TR 145 913 V14.0.0 (2017-04) 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 14.0.0 Release 14) TECHNICAL REPORT GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI T
2、R 145 913 V14.0.0 (2017-04)13GPP TR 45.913 version 14.0.0 Release 14Reference RTR/TSGR-0645913ve00 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、 ETSI ETSI TR 145 913 V14.0.0 (2017-04)23GPP TR 45.913 version 14.0.0 Release 14Intellectual 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 memb
10、ers 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 (https:/ipr.etsi
11、.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
12、 present document. Foreword 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 refer
13、ences 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 “should“, “should not“, “may“, “need not“, “will“, “will not“, “can“ and “cannot“
14、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. ETSI ETSI TR 145 913 V14.0.0 (2017-04)33GPP TR 45.913 version 14.0.0 Release 14
15、Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction 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 Da
16、ta throughput improvements . 10g34.2 Compatibility objectives . 10g34.2.1 Maintenance of voice quality 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-
17、User Reusing-One-Slot (MUROS) 11g35 Study item pre-requisites 12g35.1 Introduction 12g35.2 Preliminary boundary conditions for pulse shape optimisation 12g35.2.1 Introduction. 12g35.2.2 Time domain . 12g35.2.3 Frequency domain 12g35.3 Network configurations for pulse shape evaluation . 12g35.4 Legac
18、y MS Rx filter working assumption 14g35.5 Legacy MS type . 14g36 Network level analysis . 15g36.1 Introduction 15g36.2 Network scenarios and simulation assumptions . 15g36.2.1 Resource allocation . 15g36.3 Link to system interface . 16g36.4 Interference statistics 16g36.5 Interference profile for li
19、nk level analysis 17g36.5.1 Results 17g37 Pulse shape optimisation 18g37.1 Introduction 18g37.2 Candidate pulse shapes from 4 18g37.2.1 Optimisation assumptions. 18g37.2.2 Results 18g37.2.2.1 Spectrum . 18g37.2.2.2 Adjacent channel protection 20g38 Link level studies . 20g38.1 Introduction 20g38.2 L
20、ink to system interface . 21g38.2.1 Introduction. 21g38.2.2 Simulation assumptions 21g38.2.3 Link level performance . 21g3ETSI ETSI TR 145 913 V14.0.0 (2017-04)43GPP TR 45.913 version 14.0.0 Release 148.2.4. Legacy voice receiver . 23g38.2.4.1 Front-end filter 23g38.2.5 EGPRS2 receiver 23g38.2.5.1 I
21、ntroduction . 23g38.2.5.3 Candidate pulse #2 24g38.2.5.4 Candidate pulse #3 27g38.2.5.5 Receiver noise . 30g38.2.5.6 First Stage Mapping (CIR to BER) . 30g38.2.5.7 Second Stage Mapping (BER to BLER) . 32g38.2.5.8 Second Stage Mapping for Non-hopping Channel 36g39 System level studies . 40g39.1 Intro
22、duction 40g39.2 System Performance Evaluation . 40g39.2.1 Evaluation method 40g39.2.2 System performance results 40g39.2.2.1 Evaluation method 40g39.2.2.2 Impact on speech quality . 42g39.2.2.3 Impact on data throughput 44g310 Summary 47g311 Conclusion 49g3Annex A: Candidate pulse shape coefficients
23、 50g3A.1: Candidate pulse shapes from 4 50g3Annex B: Network statistics 52g3B.1 CDFs for Scenario A 52g3B.2 CDFs for Scenario B 53g3B.3 CDFs for Scenario C 55g3B.4 CDFs for Scenario D 56g3B.5 Noise CDFs for all scenarios 58g3Annex C: Change history 59g3History 60g3ETSI ETSI TR 145 913 V14.0.0 (2017-
24、04)53GPP TR 45.913 version 14.0.0 Release 14Foreword This Technical Report has been produced by the 3rdGeneration 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 con
25、tents 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 where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved d
26、ocument 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. ETSI ETSI TR 145 913 V14.0.0 (2017-04)63GPP TR 45
27、.913 version 14.0.0 Release 14Introduction The EGPRS2-B feature has been included into GERAN Rel-7 with 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
28、 scenarios, a spectrally wider pulse shape can improve data throughput performance further. To obtain 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
29、 shape or the new pulse shape will be under operator control. It is not clear to what degree the current 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 tr
30、ansmitted or whether it can be assumed to be applicable for all modulations. It is important to continue 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 V14.0.0 (2017-04)73GPP TR 45.913
31、 version 14.0.0 Release 141 Scope The present document is an output of the 3GPP study item “Optimized 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
32、 the optimized pulse shapes in a similar manner as was used in the SAIC feasibility study TR 45.903 3. ETSI ETSI TR 145 913 V14.0.0 (2017-04)83GPP TR 45.913 version 14.0.0 Release 142 References The following documents contain provisions which, through reference in this text, constitute provisions o
33、f the present document. 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 3GP
34、P 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 TDoc GP-072026: “WID Optimized Transmit Pulse Shape for Downlink EGPRS2
35、-B“. 3 3GPP TR 45.903: “Feasibility Study on Single Antenna Interference Cancellation (SAIC) for 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
36、introduction of the wide bandwidth pulse shall increase overall network throughput. 4.2.3 Implementation 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 bandw
37、idth pulse should change BSS hardware as little as possible. 4.2.5 Impacts to network planning 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 ed
38、ge of an operators band allocation and in country border regions where no frequency coordination 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 us
39、ed on a frequency which is adjacent (at a 200 kHz offset) to a frequency which is uncoordinated (see above), then the linearised GMSK pulse shall be used. ETSI ETSI TR 145 913 V14.0.0 (2017-04)113GPP TR 45.913 version 14.0.0 Release 144.2.6 Compatibility with Multi-User Reusing-One-Slot (MUROS) The
40、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 of both features will be investigated after completion of the feasibility studies and before the corresponding work items are
41、agreed. ETSI ETSI TR 145 913 V14.0.0 (2017-04)123GPP TR 45.913 version 14.0.0 Release 145 Study item pre-requisites 5.1 Introduction Pre-requisites to the study are identified as follows: Preliminary boundary conditions for pulse shape optimisation, where more than one set of boundary conditions may
42、 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 most likely EGPRS2 deployment strategies. A legacy Rx filter working assumption. 5.2 Preliminary boundary conditions for pulse
43、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 link level if more than one pulse shape is optimised against the same set of boundary conditions. Only when the system evaluati
44、on 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 set too loose or too tight, then a further iteration of the study might be necessary. In general, the same procedure will be us
45、ed 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 shall not be longer than 6 reduced symbol periods. This is to avoid an increase in delay spread which the MS equaliser needs to
46、 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 the 600 kHz offset Measurements performed by network vendors will verify that these criteria can be met for each candidate pulse s
47、hape. 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 (Section 9). If an adjacent channel at the 200 kHz offset is used by a different operator (i.e. no guard band exists), then the lineari
48、sed 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 V14.0.0 (2017-04)133GPP TR 45.913 vers
49、ion 14.0.0 Release 14Table 5.1: Configuration specific assumptions Parameter WIDER-1 WIDER-2 WIDER-3 Frequency band 900 MHz 900 MHz 900 MHz Cell radius 500 m 500 m 500 m Bandwidth 4.4 MHz 11.6 MHz 8.0 MHz Guard band 0.2 MHz 0.2 MHz 0.2 MHz Number of channels (excl guard band) 21 57 39 Number of TRX 3 6 4 BCCH frequency reuse 4/12 4/12 4/12 TCH frequency reuse 1/1 3/9 3/9 Frequency hopping synthesized baseband baseband Length of MA 9 5 4 (includes BCCH carrier) BCCH or TCH under interest BCCH and TCH BCCH and TCH BCCH and TCH Resource allocation o
