Bands A & B update

1. Bands A & B update Andy Gowans Private Business Systems UnitUK Radiocommunications Agency

2. Structure of the presentation • UK update • IR 2006 • SI 2003 No.74 • ETSI/IEEE • EN 301 893 • TGh • DFS parameters

3. UK Interface requirement • IR2006: Short Range, Broadband, Data Services (High performance RLAN) operating in the frequency range 5150 - 5725 MHz • Completed EU notification October 2002. • Includes interim arrangements to allow use of equipment with limited DFS capabilities ( i.e no radar detection) • Devices in the mobile service associated with Mobile/Nomadic and Local Area Network applications)

4. IR2006 Interim ArrangementBand A (5150-5350MHz) • Reduce the power level: where no TPC nor full DFS can be implemented equipment shall only operate at a maximum power level of 60 mW. Where TPC is implemented equipment shall only operate at a maximum power level of 120 mW • Limited DFS Equipment operating in this band must implement a random channel access mechanism capable of operating on all 8 carrier frequencies. • INDOOR ONLY VALID FOR 12 TO 18 MONTHS!

5. IR2006 Full Arrangement • Bands A (5150-5350MHz) • PSD shall not exceed 10mW/MHz. • Max E.I.R.P 200mW • INDOOR ONLY • Band B (5470-5725MHz) • PSD shall not exceed 50mW/MHz. • Max E.I.R.P 1W • Both Bands A & B • DFS. Equipment operating in this band must implement a random channel access mechanism capable of operating on the all carrier frequencies within 330 MHz of the spectrum in bands A and B. Shall prevent co-channel operation in the presence of Radar signals. • TPC shall be employed to ensure a mitigation factor of at least 3 dB on the average output power of the network. • OFDM Mandatory see http://www.radio.gov.uk/publication/interface/

6. New Statutory Instrument • New draft SI to allow both Licence Exempt use and provision of public networks put before parliament in January 2003. • SI 2003 No.74 Became law on the 12th of February 2003. • Allows the Licence Exempt use of Equipment that meets the requirements of IR 2006. • Allows the provision of public service. see http://www.legislation.hmso.gov.uk/stat.htm

7. ETSI/IEEE • EN 301 893 • going through two step approval process • currently doing the final comment resolution before voting. • Looking to resolve comments April meeting. • IEEE 802.11 TGh • Going through comment resolution • looking to finalise & go for final sponsor ballot next meeting (March) • deadline dependent upon on outcome of EN DFS discussions

8. DFS parameters from EN Annex D • Table D.1: DFS requirement values • Parameter Value Channel Availability Check Time 60 s Channel Move Time 10 s Channel Closing Transmission Time 260 ms

9. DFS parameters from EN Annex D • Table D.2: Interference Threshold values • Master Device • Maximum Transmit Power Value >200 mW -64 dBm • £200 mW -62 dBm

10. Slave device threshold ? • Example 1: • Maximum Transmit Power Value • >200 mW -64 dBm • £200 mW N/A • Example 2: • Maximum Transmit Power Value • >200 mW -62 dBm • 121 - 200 mW -55 dBm • £120 mW N/A • Example 3: • Maximum Transmit Power Value • >500 mW -62 dBm • 201 - 500 mW -59 dBm • 101 - 200 mW-55 dBm • 51 - 100 mW-52 dBm • £50 mW N/A

11. Ad hoc networking threshold • Maximum Transmit Power Value • >200 mW -64 dBm • 26 - 200 mW -62 dBm • £25 mW N/A

12. Conclusions • May have to make alterations to IR2006 once DFS thresholds are completed. • Changes will only make the requirements for DFS within Bands A & B less stringent from the present IR2006.