1、 ETSI TR 145 903 V15.0.0 (2018-07) Digital cellular telecommunications system (Phase 2+) (GSM); Feasibility study on Single Antenna Interference Cancellation (SAIC) for GSM networks (3GPP TR 45.903 version 15.0.0 Release 15) TECHNICAL REPORT GLOBAL SYSTEM FOR MOBILE COMMUNICATIONSRETSI ETSI TR 145 9
2、03 V15.0.0 (2018-07)13GPP TR 45.903 version 15.0.0 Release 15Reference RTR/TSGR-0645903vf00 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 enregistre la
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9、ion. ETSI ETSI TR 145 903 V15.0.0 (2018-07)23GPP TR 45.903 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 publicly
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13、 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 Partnership
14、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 identitie
15、s 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 expression
16、 of provisions). “must“ and “must not“ are NOT allowed in ETSI deliverables except when used in direct citation. ETSI ETSI TR 145 903 V15.0.0 (2018-07)33GPP TR 45.903 version 15.0.0 Release 15Contents Intellectual Property Rights 2g3Foreword . 2g3Modal verbs terminology 2g3Foreword . 5g3Introduction
17、 5g31 Scope / objectives . 7g32 References 7g33 Abbreviations . 7g34 Network scenarios for SAIC evaluation . 8g35 Interference modelling . 11g35.1 Introduction 11g35.2 Interference statistics 11g35.3 Synchronous link level models . 14g35.3.1 Interferer levels . 14g35.3.2 Delay distributions 16g35.3.
18、3 Frequency offset distributions. 17g35.4 Asynchronous link level models 17g35.4.1 Burst structure . 18g35.4.2 Time-offset modelling 18g35.4.3 Power control 19g35.4.4 Phase transition . 20g35.4.5 Guard period and power ramping . 20g35.4.6 DTX 21g35.5 Summary . 21g36 SAIC Link Level Characterisation
19、. 21g36.1 Introduction 21g36.2 Link level performance 22g36.2.1 Results for exemplary link models . 22g36.2.2 Additional results 24g36.3 Link-to-system interface . 24g37 SAIC system level characterization . 25g37.1 Introduction 25g37.2 Link-to-system mapping . 26g37.3 System level simulator . 26g37.
20、3.1 Satisfied user definition 27g37.4 System level simulation results 28g37.4.1 System capacity for 100% SAIC mobile penetration . 28g37.4.1.1 Configuration 1 unsynchronized network 28g37.4.1.2 Configuration 2 synchronized network 28g37.4.1.3 Configuration 2 unsynchronized network 29g37.4.1.4 Config
21、uration 3 synchronized network 30g37.4.1.5 Configuration 3 unsynchronized network 31g37.4.1.6 Configuration 4 unsynchronized network 32g37.4.2 Impact of SAIC Mobile Penetration . 33g37.4.3 Additional results 37g37.4.3.1 Effect of antenna patterns and Quality of Service (QoS) on system capacity . 37g
22、37.4.3.2 System performance for Configuration 1, another perspective . 39g37.4.3.3 Impact of 8-PSK interference on GMSK SAIC performance . 40g37.5 The effect of SAIC on GPRS performance 40g37.6 Summary and conclusions 44g38 SAIC field trials . 45g3ETSI ETSI TR 145 903 V15.0.0 (2018-07)43GPP TR 45.90
23、3 version 15.0.0 Release 158.1 Asynchronous network field trial . 46g38.2 Synchronous network field trial . 46g39 Test considerations . 47g39.1 Introduction 47g39.2 Discussion 48g39.3 Summary 51g310 Signalling considerations . 51g310.1 Logical binding of receiver performance to protocol version 52g3
24、10.2 Release-independent indication of receiver performance: Classmark 3 IE 52g310.3 Release-independent indication of receiver performance: MS Radio Access Capability IE 53g310.4 Summary 55g310.5 References 55g311 Conclusions 55g311.1 Specification impacts . 56g311.1.1 Core specifications . 57g311.
25、1.2 Testing specifications . 57g3Annex A: Change history 58g3History 59g3ETSI ETSI TR 145 903 V15.0.0 (2018-07)53GPP TR 45.903 version 15.0.0 Release 15Foreword This Technical Report has been produced by the 3rdGeneration Partnership Project (3GPP). The contents of the present document are subject t
26、o 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 Where: x the first digit
27、: 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 edit
28、orial only changes have been incorporated in the document. Introduction This document studies the feasibility of utilising Single Antenna Interference Cancellation (SAIC) as a means of increasing the downlink spectral efficiency of GSM networks. SAIC is a generic name for techniques, which attempt t
29、o cancel or suppress interference by means of signal processing without the use of multiple antennas. The primary application is the downlink, where terminal space and aesthetics typically preclude the use of multiple antennas. Clause 1 of this document defines the scope and objectives of this feasi
30、bility study. Clause 4 defines the network scenarios that have been defined to evaluate SAIC performance in GSM networks. These scenarios are representative of typical GSM deployments worldwide today. Clause 5 presents the interference statistics associated with the network scenarios defined in Clau
31、se 4. These interference statistics are developed via system simulations, and are defined in terms of the distributions of the parameters which are critical to understanding SAIC performance. These critical parameters include; - The Carrier to Interference plus noise Ratio (CIR) - The Dominant to re
32、st of Interferer Ratio (DIR) - The other interferer ratios, which define the relative power of the dominant co-channel interferer to each of the other considered interferers - The delay between the desired signal and each of the interferers. It is important to understand the network statistics of th
33、ese key parameters since most SAIC algorithms can only cancel one interferer, and their effectiveness in doing this is affected by the remaining interference, and delays between the desired signal and the interferers. In Clause 6, candidate SAIC algorithms are evaluated at the link level based on th
34、e interference statistics defined in Clause 5. Both long-term average and per burst results are generated. The long-term average results represent the classical way of looking at link performance via link simulations, defining the Bit Error Rate (BER) and Frame Error Rate (FER) averaged over the ent
35、ire simulation run as a function of the CIR. This is the type of performance that is typically specified in the GSM standards. However, to develop a system capacity estimate, it is necessary to define the link performance on a per burst basis. To this end, Clause 6 also defines the average BER over
36、the burst as a function of the burst CIR and burst DIR. This burst performance is used to develop a link-to-system level mapping. This mapping is used in Clause 7 to develop voice capacity and data throughput estimates for both conventional and SAIC receivers. The voice capacity gain and data throug
37、hput gain for SAIC is then deduced from these estimates. ETSI ETSI TR 145 903 V15.0.0 (2018-07)63GPP TR 45.903 version 15.0.0 Release 15Clause 8 describes the field trials that have been conducted using an SAIC prototype Mobile Station (MS). Clause 9 addresses testing considerations for SAIC capable
38、 MSs, while Clause 10 defines a couple of signalling options for identifying an MS as being SAIC capable. Finally, Clause 11 provides the relevant conclusions that can be drawn from this feasibility study, the most important of which is the conclusion that SAIC is a viable and feasible technology, w
39、hich will support significant voice capacity gains for both synchronous and asynchronous networks when applied to GMSK modulation. In addition, modest increases in GPRS data throughput are also supported for the types of data traffic considered. Clause 11 also identifies those clauses of the core an
40、d testing specifications that will be impacted by the inclusion of an SAIC capability. ETSI ETSI TR 145 903 V15.0.0 (2018-07)73GPP TR 45.903 version 15.0.0 Release 151 Scope / objectives The objective of this document, as defined in the work item 2, is to determine the potential of SAIC in typical n
41、etwork layouts. This includes study of the following aspects: a) Determine the feasibility of SAIC for GMSK and 8PSK scenarios under realistic synchronized and non-synchronized network conditions. Using a single Feasibility Study, both GMSK and 8PSK scenarios will be evaluated individually. b) Reali
42、stic interference statistics including CIR (Carrier to Interference plus noise Ratio) and DIR (Dominant-to-rest of Interference Ratio) levels and distributions based on network simulations and measurements, where possible. c) Robustness against different training sequences. d) Determine method to de
43、tect/indicate SAIC capability. 2 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 number, version number, etc.) or non-specific. -
44、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
45、the present document. 1 ETSI TR 101 112 v3.2.0 (1998-04), “Universal Mobile Telecommunications System (UMTS); Selection procedures for the choice of radio transmission technologies of the UMTS“. 2 3GPP TSG-GERAN TDOC GP-022891: “Work Item Description, Single Antenna Interference Cancellation“, Sophi
46、a Antipolis, France, 18-22 November 2002. 3 3GPP TSG-GERAN SAIC Workshop TDOC GAHS-030009: “Network level simulation scenarios and assumptions for SAIC“, Atlanta, USA, 8-9 January 2003. 4 3GPP TSG-GERAN SAIC Workshop TDOC GAHS-030005: “Scenarios and Modelling Assumptions for SAIC in GERAN“, Atlanta,
47、 USA, 8-9 January 2003. 5 3GPP TSG-GERAN SAIC Workshop TDOC GAHS-030002: “Single antenna interference cancellation - evaluation principles and scenarios“, Atlanta, USA, 8-9 January 2003. 6 3GPP TSG-GERAN SAIC Workshop TDOC GAHS-030020: “Interference Characterization for SAIC Link Level Evaluation“,
48、Seattle, USA, 4-5 March 2003. 7 3GPP TSG-GERAN SAIC Workshop TDOC GAHS-030022: “Link Level model for SAIC“, Seattle, USA, 4-5 March 2003. Additional references are noted in the individual clauses of this document 3 Abbreviations ACI Adjacent Channel Interference AMR Adaptive Multi Rate BEP Bit Error
49、 Probability BER Bit Error Rate BLER Block Error Rate BTS Base Transceiver Station ETSI ETSI TR 145 903 V15.0.0 (2018-07)83GPP TR 45.903 version 15.0.0 Release 15CDF Cumulative Distribution Function C/I Carrier-to-Interference Power Ratio cdfs cumulative distribution functionsCINR Carrier to Interference-plus-Noise Ratio DIR Dominant-to-rest Interference RatioDPC Downlink Power Control DTX Discontinuous Transmission EFL Effective Frequency Load FEP Frame Error Probability FER Frame Error Rate FL Frequency LoadFR Full Rate FTP File Transfer P
