1、 ETSI TR 103 450 V1.1.1 (2017-07) System Reference document (SRdoc); Technical characteristics and parameters for Wireless Multichannel Audio Systems (WMAS) TECHNICAL REPORT ETSI ETSI TR 103 450 V1.1.1 (2017-07) 2 Reference DTR/ERM-559 Keywords PMSE, SRDOC ETSI 650 Route des Lucioles F-06921 Sophia
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7、going restriction extend to reproduction in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Orga
8、nizational Partners. oneM2M logo is protected for the benefit of its Members GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TR 103 450 V1.1.1 (2017-07) 3 Contents Intellectual Property Rights 4g3Foreword . 4g3Modal verbs terminology 4g3Executive summary 4
9、g3Introduction 5g31 Scope 7g32 References 7g32.1 Normative references . 7g32.2 Informative references 7g33 Definitions, symbols and abbreviations . 8g33.1 Definitions 8g33.2 Symbols 8g33.3 Abbreviations . 9g34 Comments on the System Reference Document 9g35 Wireless Multichannel Audio Systems 9g36 Ma
10、rket information. 10g37 Technical information 11g37.1 Detailed technical description 11g37.2 Technical parameters and implications on spectrum 11g37.2.1 Status of technical parameters 11g37.2.1.1 Current ITU and European Common Allocations . 11g37.2.1.2 Sharing and compatibility studies (if any) alr
11、eady available 11g37.2.1.3 Sharing and compatibility issues still to be considered . 12g37.2.2 Transmitter parameters . 12g37.2.2.1 Transmitter Output Power/Radiated Power 12g37.2.2.2 Transmitter mask, Out of band emissions . 12g37.2.2.3 Operating Frequency . 15g37.2.2.4 Bandwidth . 15g37.2.2.5 Spur
12、ious emissions 15g37.2.3 Receiver parameters 15g37.2.4 Channel access parameters . 16g37.3 Information on relevant standard(s) . 16g38 Radio spectrum request and justification . 16g39 Regulations . 17g39.1 Current regulations . 17g39.2 Proposed regulation and justification . 17g3History 18g3ETSI ETS
13、I TR 103 450 V1.1.1 (2017-07) 4 Intellectual Property Rights Essential patents 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 b
14、e 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.org/). Pursuant to the ETSI I
15、PR 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. Trademarks
16、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 use or reproduce any trademark and/or tradename. Mention of
17、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 Technical Committee Electromagnetic compatibility and Radio spectrum Matters (ERM
18、). 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 of provisions). “must“ and “must not“ are NOT allowed in E
19、TSI deliverables except when used in direct citation. Executive summary This Technical Report (TR) provides information on Wireless Multichannel Audio Systems (WMAS), which are one possible new technology for the next generation of audio Programme Making and Special Events (PMSE) equipment employing
20、 new wideband modulation techniques to support the transmission of multiple audio links in one single wideband radio channel. As part of its 2015-2020 strategic plan i.22, the ECC intends to identify the necessary spectrum for PMSE, taking into account the recent evolutions in their spectrum, the po
21、ssibility to use also higher frequencies and to implement digital technology and cognitive sharing solutions, in conjunction with the need to maintain and, where possible, improve upon existing production quality. In addition the Radio Spectrum Policy Group (RSPG) is considering a long-term strategy
22、 on spectrum requirements addressing the future needs and use of wireless audio and video PMSE applications from 2020. WMAS: implement digital technology for audio PMSE applications and provide one transmission platform required for enabling cognitive sharing operation in future; are, in general, fr
23、equency neutral and designed to operate in all frequency ranges currently identified for audio PMSE. The harmonized standard ETSI EN 300 422 part 1 to 3 i.1, i.2 and i.3 already includes requirements for WMAS-based audio PMSE equipment; ETSI ETSI TR 103 450 V1.1.1 (2017-07) 5 use has not been consid
24、ered in previous CEPT studies/reports; e.g. ECC Report 191 i.6, ECC Report 204 i.7, ECC Report 221 i.11 and ECC Report 245 i.12; can be considered to have comparable or better compatibility to other systems/services previously studied by the ECC than narrowband PMSE equipment (see clause 7.2.2.1); o
25、ffer a standard mode for higher spectral efficiency (3 audio links per MHz spectrum, which means 50 % more audio channels compared to typical narrowband PMSE systems); have out-of-band and spurious emissions which are expected to be the same or better than narrowband PMSE systems (see clause 7.2.2.2
26、). Once introduced to the market, WMAS will share the market with narrowband PMSE systems and will operate primarily in professional, multi-channel PMSE deployments, enabling flexible use and assignment of multiple audio channels. Furthermore, WMAS employ a future-oriented wireless technology, which
27、 provides the technical foundation for supporting uncompressed audio transmission for high quality sound productions and for operation in possible new frequency bands, e.g. under database-driven sharing solutions including Licensed Shared Access (LSA) i.8. Hence, a single WMAS-based audio PMSE syste
28、m is likely to replace several narrowband PMSE systems, but will also enable new applications and markets. The present document kindly requests CEPT ECC (WGFM) to consider: WMAS operation in all frequency ranges currently listed in ERC Recommendation 70-03 (Annex 10) i.4 and ERC Recommendation 25-10
29、 i.21 for audio PMSE operation; endeavours to recommend a harmonisation of national implementations and radio interface descriptions in the CEPT member states concerning WMAS operation; WMAS-based audio PMSE operation in future compatibility/interference studies; new studies for adoption of WMAS in
30、possible new frequency bands, possibly under LSA framework i.8; and new studies for adoption of PMSE, including WMAS, under the LSA framework i.8. Introduction The present document includes necessary information to support the co-operation under the MoU between ETSI and the Electronic Communications
31、 Committee (ECC) of the European Conference of Post and Telecommunications Administrations (CEPT). Wireless Multichannel Audio Systems (WMAS) are one possible new technology for the next generation of audio Programme Making and Special Events (PMSE) equipment employing new wideband modulation techni
32、ques to support the transmission of multiple audio links in one single wideband radio channel. WMAS will provide a more efficient use of radio spectrum by supporting a higher number of audio links being transmitted per MHz when compared with current narrowband PMSE systems. In addition, WMAS support
33、 a more flexible approach to audio and RF link parameters to meet requirements defined either by application or RF environment. One upcoming challenge is the support of uncompressed audio transmission for high quality sound productions, which will be fulfilled using WMAS-based equipment. WMAS and cu
34、rrent narrowband PMSE systems can operate in the same frequency ranges. The current narrowband PMSE systems are able to use small portions of free gaps in the radio spectrum, whereas WMAS will require a wider free range of contiguous radio spectrum. The RF bandwidth of WMAS can be scaled, depending
35、on the used frequency bands or on the region of operation, for example 8 MHz in EU or 6 MHz in US. Currently, the maximum bandwidth is limited to 20 MHz. ETSI EN 300 422 part 1 to 3 i.1, i.2 and i.3 includes specific requirements for WMAS. The out-of-band and spurious emissions of WMAS are expected
36、to be the same or better than narrowband PMSE systems (see clause 7.2.2.2). ETSI ETSI TR 103 450 V1.1.1 (2017-07) 6 WMAS is a new kind of audio PMSE platform, which has not been considered in current CEPT studies/reports; e.g. ECC Report 191 i.6, ECC Report 204 i.7, ECC Report 221 i.11 and ECC Repor
37、t 245 i.12. Nevertheless, due to its technical properties, WMAS can be considered to have comparable or better compatibility to other systems/services than narrowband PMSE equipment (see clause 7.2.2.1). The present document has been created by ETSI TC ERM TG17 WG3. ETSI ETSI TR 103 450 V1.1.1 (2017
38、-07) 7 1 Scope The present document describes the necessary technical background information on Wireless Multichannel Audio Systems (WMAS), which may require a change in the present regulatory frame work for the proposed band(s) to enable these wideband systems to operate. It includes in particular:
39、 Market information. Technical information including expected sharing and compatibility issues. Regulatory issues. 2 References 2.1 Normative references Normative references are not applicable in the present document. 2.2 Informative references References are either specific (identified by date of p
40、ublication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the referenced document (including any amendments) applies. NOTE: While any hyperlinks included in this clause were valid a
41、t the time of publication ETSI cannot guarantee their long term validity. The following referenced documents are not necessary for the application of the present document but they assist the user with regard to a particular subject area. i.1 ETSI EN 300 422-1 (V2.1.1): “Wireless Microphones; Audio P
42、MSE up to 3 GHz; Part 1: Class A Receivers; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“. i.2 ETSI EN 300 422-2 (V2.1.1): “Wireless Microphones; Audio PMSE up to 3 GHz; Part 2: Class B Receivers; Harmonised Standard covering the essential requiremen
43、ts of article 3.2 of Directive 2014/53/EU“. i.3 ETSI EN 300 422-3 (V2.1.1): “Wireless Microphones; Audio PMSE up to 3 GHz; Part 3: Class C Receivers; Harmonised Standard covering the essential requirements of article 3.2 of Directive 2014/53/EU“. i.4 ERC Recommendation 70-03: “Relating to the use of
44、 Short Range Devices (SRD)“. i.5 ECC Report 18: “Complementary Report to ECC Report 159, Further definition of technical and operational requirements for the operation of white space devices in the band 470-790 MHz“. i.6 ECC Report 19: “Adjacent band compatibility between MFCN and PMSE audio applica
45、tions in the 1785-1805 MHz frequency range“. i.7 ECC Report 204: “Spectrum use and future requirements for PMSE“. i.8 ECC Report 205: “Licensed Shared Access (LSA)“. i.9 ECC Report 207: “Adjacent band co-existence of SRDs in the band 863-870 MHz in light of the LTE usage below 862 MHz“. ETSI ETSI TR
46、 103 450 V1.1.1 (2017-07) 8 i.10 ECC Report 220: “Compatibility/sharing studies related to PMSE, DECT and SRD with DA2GC in the 2 GHz unpaired bands and MFCN in the adjacent 2 GHz paired band“. i.11 ECC Report 221: “Adjacent band compatibility between MFCN and PMSE audio applications in the 700 MHz
47、frequency band“. i.12 ECC Report 245: “Compatibility studies between PMSE and other systems/services in the band 1350 - 1400 MHz“. i.13 ECC Report 253: “Compatibility studies on audio PMSE at 1492-1518 MHz and 1518-1525 MHz“. i.14 CEPT Report 32: “Recommendation on the best approach to ensure the co
48、ntinuation of existing Program Making and Special Events (PMSE) services operating in the UHF (470-862 MHz), including the assessment of the advantage of an EU-level approach“. i.15 CEPT Report 50: “Technical conditions for the use of the bands 821-832 MHz and 1785-1805 MHz for wireless radio microp
49、hones in the EU“. i.16 ERC Report 42: “Handbook on Radio Equipment and Systems Radio Microphones and Simple Wide Band Audio Links“. i.17 ERC Report 62: “Compatibility analysis regarding possible sharing between the UIC system and radio microphones in the frequency ranges 876 - 880 MHz and 921 - 925 MHz“. i.18 ERC Report 63: “Introduction of radio microphone applications in the frequency range 1785 - 1800 MHz“ . i.19 ERC Report 88: “Compatibility and sharing analysis betwee
