Overview of CEPT regulatory activities on cognitive radio

Transcription

1 Overview of CEPT regulatory activities on cognitive radio Emmanuel Faussurier ANFR Chairman CEPT/WGFM Project Team FM53 12 December

2 Background : ITU context Software-defined radio and cognitive radio systems at WRC-12 (agenda item 1.19) Definitions for SDR and CRS have been developed by ITU-R Working Party 1B and published in Report ITU-R SM Deployment scenarios considered in the report to the conference (CPM-11): Use of CRS technology to guide reconfiguration of connections between terminals and multiple radio systems Use of CRS technology by an operator of radiocommunication systems to improve the management of its assigned spectrum resources Use of CRS technology as an enabler of cooperative spectrum access Use of CRS technology as an enabler of opportunistic spectrum access No change to the Radio Regulations at WRC-12 ITU-R Resolution 58 adopted by the Radio Assembly in 2012 to provide guidance for further studies on implementation and use of CRS within ITU-R Requirement to protect stations of other administrations operating in accordance with the Radio Regulations further emphasized in Recommendation 76 (WRC- 12) 12 December

3 TV WSD in the band MHz SE43 FM53 12 December

4 European regulatory environment 4

5 CEPT classification of White Space Devices Outdoor Internet access Indoor Internet access 10 km 50 m Max eirp: 18 dbm (AP) Max eirp: 36 dbm (BS) Machine-to-machine communication CEPT technical and operations rules for WSDs Source: Alexandre Kholod Max eirp: 15 dbm (long range) -10 dbm (short range) 5

6 Geo-location database CEPT view: the geo-location is the most feasible approach to ensure the protection of incumbent services in the band MHz WSD determines its location and makes use of a database to get information on available frequencies at its current location Can be combined with spectrum sensing to improve the protection of services Essential (no-go requirement): WSD may only transmit in the territory of a country if it has successfully discovered a geo-location database approved by the NRA CEPT technical and operations rules for WSDs Source : Alexandre Kholod 6

7 Requirements to White Space Devices (1) (2) (3) WSD shall first communicate to the database: Geographical location, location accuracy, device class/model, technology ID, & other optional information WSD shall receive from the database: Available frequencies, maximum transmit power, validity period of the information provided, if sensing is required WSD shall then communicate to the database: Selected frequency, actual transmit power WSD shall stop transmitting immediately if it can not re-consult the database it fails to monitor its location it moves outside the determined area CEPT technical and operations rules for WSDs Source: Alexandre Kholod 7

8 Master/slave concept Master WSD directly communicates with the database to obtain operating parameters specific to its geographic area Slave WSD does not directly communicate with the database and obtains operating parameters from its serving master Geo-located slaves Non geo-located slaves Slave Slave Master Master The master/slave concept does not require any special regulatory requirement for the geo-location database CEPT technical and operations rules for WSDs Source : Alexandre Kholod 8

9 Conclusions (SE43) There is an increased interest to the subject among CEPT administrations CEPT has been thoroughly defining technical and operational rules for WSDs CEPT considers the geo-location as the most reliable technique for WSDs in MHz band Some issues related to the WSD operation under the geo-location are yet to be resolved There exists uncertainty regarding WSD technical characteristics CEPT technical and operations rules for WSDs Source : Alexandre Kholod 9

10 FM53 & WSD Extract from FM53 ToRs White space devices, in particular, in the UHF band (TVWSD): Develop ECC Reports: To provide a master set of the overall requirements for CEPT countries that will be needed to facilitate communication and interaction between a WSD and geolocation Data Base; To provide information on issues and requirements that need to be addressed when setting up a geo-location database and/or the management of independent database providers. To study the potential requirement from industry for future use of TV WS To study, and develop if appropriate, harmonised regulatory measures to complement current standardisation activity in ETSI (e.g., on geo-location database), with the aim of enabling the development and deployment of WSD. 12 December

11 General working assumptions Technical studies in SE43 considered multiple scenarios Developing baseline CEPT harmonised regulatory approach for white space devices in the band MHz requires simplified model: Geo-location Data Base approach Classification of WSD devices Fixed maximum permitted power limits for WSDs Clear regulatory approach / status: Opportunistic spectrum access General authorisation / Licence-exempt Non-interference / non protected basis 12 December

12 Translation process The conditions of use of the spectrum are determined through the translation process The geo-location database should determine for specific locations and WSD characteristics a list of allowed frequencies and associated transmit powers Parameters and algorithms involved in the translation process commit administrations responsibility WSD information Geographic: location, location accuracy, elevation, expected operation area Type: Master/Slave WSD, geo-located / non geo-located slaves, Type A / Type B Power, emission class (ACLR), technology identifier WSD model, WSD unique identifier Relevant for spectrum monitoring / market surveillance purpose? 12 December

13 A regulatory puzzle to be analysed Information to be provided by REGULATOR BMechanism for certification of database CInformation on algorithms to be supplied and updated by regulators A Mandatory requirements under a harmonised European approach on WSD Model for CR database manager(s) Registration Info Database Policy Algorithm Database IInformation Information from WSD to geo database GInformation from geo database to WSD Standard Organisations (HS) HEssential requirements under R&TTE directive White Space Device Manufacturers (Database Elements) Incumbent DTT Networks Database DInformation on DTT network Incumbent info Database Incumbent wireless Microphone Database EInformation on wireless microphone deployments FInformation on certified or authorised Databases(s) Source: based on contribution from Andy Gowans, Ofcom UK, Sept

14 A Mandatory requirements under a harmonised European approach on WSD in the band MHz Technical requirements per WSD type Max e.i.r.p., emission class/aclr, spurious emissions Technical requirements relating to specific channels Measures to protect mobile services in adjacent bands? Measures to protect radio astronomy in TV channel 38? Other requirements that are not location-specific? Clear information on effective national implementation of regulatory framework could be useful General CEPT implementation table (Yes / No) Channels permitted (operation subject to translation process ) / not permitted Exclusion zones around sensitive sites (Radio Astronomy, aeronautical radionavigation) 12 December

15 B Mechanism for certification of database Method to certify that the database tool will perform in accordance with the specified objectives Experience to be gained and shared among CEPT administrations 12 December

16 C Information on algorithms to be supplied and updated by regulators Information from WSD Geo-location DB CEPT should recommend a set of algorithms that can be implemented in the translation process Algorithm specific to an incumbent service Compute WSD and incumbent data information for each relevant channel in the band MHz Information on channel available should be computed for the relevant pixels of the grid Standard pixel size of 100m x 100m? Contraints for WSD operation Broadcasting PMSE Radio Astronomy Aeronautical Radionavigation Services Mobile services Concept for the geo-location database translation process (Source: figure 3 in draft ECC Report 186) Information to WSD 12 December

17 D Information on DTT network Adequate method(s) to protect the broadcasting service to be determined Protection of BS coverage area Cross-border interference issues 12 December

18 E Information on wireless microphone deployments Adequate method(s) to protect PMSE to be determined Difficulties relating to the differences in the regulatory regimes applied in Europe to radio microphones operating in the band MHz Licensed vs Licence-exempt regime Feasibility of a registration mechanism to allow protection of PMSE users to be assessed 12 December

19 F Information on certified or authorised Databases(s) Quote from draft ECC Report 186 : How a master WSD discovers an approved geo-location databases may be implemented differently in different national regulatory authority. For example, in the UK a WSD must first consult Ofcom listing of approved databases to discover at least one approved database unless it has previously consulted the Ofcom list within the last 24 hours. 12 December

20 I Information from WSD to geo database Communication between a master WSD and a geo-location database shall not occur within the band MHz, unless the master WSD has already been authorised by the database to transmit within this band WSD Information WSD Location WSD Location accuracy WSD Device class WSD Emission class WSD Types WSD e.i.r.p. max WSD ACLR Obvious need for adequate authorised communication channel and protocol between master WSD and a geo-location database to enable each transmission session WSD Expected Oper area WSD Device elevation WSD Type WSD technology identifier WSD model WSD Ant Character s WSD unique identifier WSD information stored in database (Source: figure 4 in draft ECC Report 186) 12 December

21 G Information from geo database to WSD Master WSD receives specific information from the geo-location database Operate subject to the specific instructions and parameters received from the geo-location database Manage and communicate appropriate information to its associated slave WSDs so that the slave WSDs are able to operate subject to the specific instructions and parameters received by the master WSD from the geo-location database Recorded data of authorised WSDs: Quote from draft ECC Report 186 (section 5.1.1): The database should store the characteristics of the WSD which have been authorised. These WSDs must confirm the frequency and the e.i.r.p. that they are using. Can support spectrum monitoring / market surveillance activities 12 December

22 Conclusion on TV WSD Setting baseline CEPT harmonised regulatory framework for TV WSD still requires considerable investigations Uncertainties relating to actual needs, future use of the band, and technical characteristics and feasibilities Issue of spectrum availability for TV WSD Assessment of the spectrum potentially available for WSD provided in ECC Report 159 Varies from country to country White spaces already used by radio microphones Ability to protect legacy radio microphones depend upon national regulatory regime Evolving context of primary incumbent users Broadcasting long-term needs vs mobile interest on 700 MHz band (WRC a.i. 1.2) 22

23 Licensed shared access (LSA/ASA) Report on ASA concept (WGFM, April 2012) Developed by the correspondence group on Cognitive Radio Systems (CG-CRS) Doc. FM(12)084 Annex 47 FM53 General issues on LSA FM52 Mandate to develop a draft ECC Decision, aimed at harmonising implementation measures for MFCN (including broadband wireless access systems) in the frequency band MHz including; least restrictive technical conditions (LRTC), taking into account the existing standardisation framework and activities at the worldwide level, and an appropriate frequency arrangement; regulatory provisions based on LSA ensuring the long term incumbent use of the band in the territory of the administrations that wish maintain such use; 12 December

24 LSA concept Key features of the LSA concept: Harmonised regulatory framework to share spectrum between a limited numbers of users in accordance with a set of pre-defined conditions Existing spectrum user(s) ( the incumbent(s) ) One or several licensed LSA users ( LSA licensee(s) ) Confidence that the incumbent can continue to use the spectrum with primary rights under specified conditions whenever and wherever necessary New opportunities to LSA users seeking predictable Quality of Service (QoS) Complementary spectrum capacity to meet the demand Sharing a frequency band between different services is however not new 12 December

25 Why LSA? Based on European candidate application ETSI to consolidate market requirements under specified regulatory approach Allows addressing particular frequency bands to meet European demand Alternative to permanent segmentation and clearing/refarming of a frequency band Harmonised regulatory measure to target a significant market basis while securing existing uses Ensure that product standards for operation in such frequency band will deliver the necessary sharing mechanisms -> Tool-box Implementation taking into account national specificities National LSA framework to ensure relevant operation of incumbent Basis for issuing LSA licensing process 12 December

26 LSA concept & mobile broadband (1) Spectrum licensee Application/granting of spectrum use rights Administration/ Regulator Conditions and timelines to free up the spectrum Conventional spectrum in ECS bands Licensed spectrum Incumbent Base station Base station Base station controls device access to licensed spectrum Base station controls device access to licensed spectrum Multi-bands Device 26

27 LSA concept & mobile broadband (2) Spectrum licensee Application/granting of LSA spectrum use rights Administration/ Regulator where/when LSA spectrum is available (Dynamic) Conditions of access to the LSA spectrum enabling protection of primary incumbent user Permitted ASA spectrum Licensed spectrum Base station Incumbent Base station Incumbent Base station controls device access to licensed spectrum (licensed, LSA) Base station controls device access to licensed spectrum (licensed, LSA) Multi-bands Device 27

28 About LSA and cognitive radio Vertical sharing Dynamic implementation of LSA could take advantage of the recent advances in cognitive technology to ensure protection of primary incumbent user Sharing requirements to be specified as part of a CEPT harmonisation measure Management of on-demand restrictions imposed by incumbents? Horizontal sharing New business opportunities ranging from semi static spectrum assignments up to more flexible and dynamic access schemes to spectrum Cooperative spectrum access mechanisms between several LSA licensees? Implementation of on-demand authorisation by LSA licensees? 12 December

29 FM53 & LSA Extract from FM53 ToRs Licensed shared access (LSA): Analyse the procedures for the assignment of LSA individual rights of use, in conformity with the EU Framework and Authorisation Directives and prepare, as appropriate, comments and proposals. Develop an ECC Report on general conditions, including possible sharing arrangements and band-specific (if not dealt with by a specific project team) conditions for the implementation of the LSA that could be used as guidelines for CEPT administrations. Establish relevant interaction with ETSI in order to translate relevant sharing requirements into harmonised standards including those in relation with the implementation of the LSA framework. Study the level of guarantee in terms of spectrum access under LSA that is required by an operator for network investment. 12 December

30 FM53 & LSA Procedures for the assignment of LSA individual rights of use Requirements under the Authorisation Directive to be analysed Multiple forms could in theory be implemented on a national basis Impact of the complementary nature of LSA spectrum? Viability of the procedure connected to the level of guarantee that can be provided to LSA licensees under LSA framework ECC Report on general conditions Implementation on a case by case basis Lessons to be gained from the work of FM52 Level of guarantee Critical issue : will impact the investment an operator will be ready to commit on licence and network 12 December

31 Other regulatory issues relating to RRS Extract from FM53 ToRs General objective on reconfigurable radio systems (RRS): To guide WGFM on suitable measures to support the establishment of the appropriate framework allowing the deployment of RRS based on: recent developments within industry (in particular ETSI) and research projects; the current use of the spectrum and the rights of use held by the current users; the experience gained on the implementation of advanced dynamic sharing techniques. To make proposals, as appropriate, to ITU-R on behalf of CEPT in relation to ITU-R Resolution 58. Contribution driven 12 December

32 Merci! 12 December