Studies on 5 GHz extension bands for WAS/RLANs ECC-US-CAN Liaison Meeting Maisons Alfort , 28-29 May 2015

Preparation for WRC-15 AI 1.1: main focus on the 5350-5470 MHz band Background Two workstreams Preparation for WRC-15 AI 1.1: main focus on the 5350-5470 MHz band EC Mandate to CEPT Harmonised compatibility and sharing conditions for WAS/RLANs in the 5350-5470 and 5725-5925 MHz. Initial results in CEPT Report 57 (March 2015). Final Report including complementary studies (March 16 for consultation, July 16 for publication). Studies based on RLAN characteristics and assumptions (ETSI EN 301 893). Footer - add copy here

Studies in the band 5350-5470 MHz Initial studies consistent with ITU-R (JTG 4-5-6-7). RLAN parameters derived from ECC/EC regulations in 5150-5350 MHz (indoor only, e.i.r.p. limit 200 mW, TPC, DFS) Sharing with EESS not feasible unless additional sharing/mitigation techniques are identified Preliminary assessment of mitigation techniques not favorable Additional studies on mitigation techniques started in April 2015 Compatibility with radiolocation (also applicable for 5725-5850 MHz) Further studies needed to ensure protection of radars not already covered (bi-static, fast frequency hopping) May require enhancement of DFS or consideration of additional techniques. Footer - add copy here

Studies in the band 5725-5925 MHz RLAN parameters derived from ECC/EC regulations in 5470-5725 MHz (outdoor allowed, e.i.r.p. limit 1 W, TPC, DFS) Footer - add copy here

Studies in the band 5725-5925 MHz Compatibility with FSS in 5725-5850/5850-5925 MHz extensive studies are ongoing in 2 steps step 1: determine the maximum number of RLAN active on-tune transmitters in the footprint of the satellites under consideration in order to satisfy the relevant protection criteria ΔT/T step 2: compares the maximum number of active on-tune RLAN transmitters derived from step 1 to the expected RLAN deployments in order to assess the potential compatibility main difficulty : develop a suitable deployment model for RLANs in the FSS footprint (may cover more than one continent) Compatibility with BDA2GC in 5855-5875 MHz compatibility achieved with indoor RLANs interference may occur for worst case scenarios involving outdoor RLANs compatibility achieved with mitigating factors Footer - add copy here

Studies in the band 5725-5925 MHz Compatibility with ITS, BFWA, road tolling and Wireless Industrial Applications (WIA) MCL calculations show the need for significant separation distances Preliminary assessment of mitigation techniques (listen-before-talk) Coexistence RLAN-ITS: consideration of coexistence mechanisms within the 802.11 family (Clear Channel Assessment) Coexistence RLAN-BFWA may be facilitated by the use of similar technology for both systems Coexistence RLAN – road tolling: preliminary consideration of mitigation techniques (geolocation, beacon….) Coexistence RLAN – WIA: can be achieved through coordination within the factory premises Footer - add copy here

Further consideration Further work on mitigation techniques for both bands performed in stage 2 (starting April 2015) Cooperation with ETSI BRAN: new work items for mitigation techniques (EESS, radiolocation, ITS) Initial discussions on LTE unlicensed: Similar technology than WAS/RLAN – OFDM based Assumptions regarding user density, indoor/outdoor usage, amount of traffic etc. may differ LTE unlicensed equipment would have to apply the same mitigation techniques as WAS/RLANs equipment. Footer - add copy here

Thanks for your attention More information at www.cept.org/ecc Thanks for your attention Footer - add copy here