RR-TAG Liaison Report January 2009 IEEE 802.18-802.11 Month Year doc.: IEEE 802.11-yy/xxxxr0 January 2009 RR-TAG Liaison Report January 2009 IEEE 802.18-802.11 Date: 2009-1-21 Authors: Rich Kennedy, OakTree Wireless John Doe, Some Company

IEEE 802.18 Work Plan Generated a response to ECC WG SE24 on use of 5 GHz onboard aircraft Heard an update on EN 300 328 changes for v1.8.1 Final review of 802.16 inputs to IMT-Advanced (editorial changes only) Re-edited the 802.11 input to M.1450; updates for new amendments caused document formatting errors Reviewed “ITU Mark” proposal Start looking at a response to the TVWS R&O

Weather Radars and 5 GHz RLANs EUMETNET is claiming (erroneously) that DFS does not work, and that 5 GHz RLANs must be banned from aircraft (and possibly all mobile platforms) Claim that mobile platforms cannot meet new CAC requirements Mobile radars are protected by In Service Monitoring; CAC not relevant Want to block 5600 – 5650 MHz band; could be extended to full 5250 – 5350 and 5470 – 5725 MHz bands Issues seen appear to have been with non-compliant, high-power APs Boeing has performed field test; data show no impact on weather radar operation Letter asks SE24 to consider test data, and that RLAN community be involved in any future decisions on this matter

References 18-09-0006-00-0000-ecc-draft-report-on-airborne-5ghz-rlans-and-radar 18-09-0011-00-0000-letter-to-se24-concerning-airborne-rlans 18-09-0007-00-0000-5ghz-rlans-and-radars-in-eu 18-09-0012-00-0000-en300_328_update 18-09-0008-00-0000-itu-mark