Harmonized Standard from BRAN#29

1. Harmonized Standard from BRAN#29 Mika Kasslin Mika Kasslin, Nokia

2. HL HS Agenda Items • Status review and discussion • Agreed on to target for a new Public Enquiry (PE) from the meeting • TPC ”dynamic range” • Decided to keep in 6 dB • DFS requirements and testing • Finalized DFS requirements and related test suites in the Harmonized Standard (HS) • Final version from BRAN#29 is V0_l • HL Harmonized Standard V0_l Mika Kasslin, Nokia

3. 2002 2003 7 10 1 4 8 9 11 12 2 3 5 6 7 10 8 9 11 12 Status review and discussion BRAN PE 2nd phase 1st option 2nd option 3rd option 4th option • Arguments for a PE now, e.g. • DFS framework has been stable for some time already and no changes to the basic scheme expected, and the DFS in the HS is aligned with the framework • We’ll start comment resolution in BRAN#31 and whenever after that we can send the HS to vote (2nd phase) after any revisions needed • A signal from RLAN community that we’re progressing on DFS • Didn’t see any reasons to postpone PE Mika Kasslin, Nokia

4. TPC & DFS Requirements in HS Mika Kasslin, Nokia

5. TPC Definition in HS The UUT (unit under test) shall employ Transmit Power Control (TPC) mechanism to ensure a mitigation factor of at least 3 dB on the aggregate power from a large number of devices. Mika Kasslin, Nokia

6. Frequency range [MHz] Frequency range [MHz] mean EIRP [dBm] mean EIRP [dBm] 5150 – 5350 5150 – 5350 23 17 5470 – 5725 5470 – 5725 30 24 TPC Requirements • The RF output power at the highest power level shall not exceed the levels given in table 2. • The RF output power at the lowest power level shall not exceed the levels given in table 3. Table 2: Mean EIRP limits for RF output power at the highest power level Table 3: Mean EIRP limits for RF output power at the lowest power level Mika Kasslin, Nokia

7. DFS Definition in HS RLAN shall employ a Dynamic Frequency Selection (DFS) mechanism to detect interference from other systems and to avoid co-channel operation with other systems, notably radar systems. DFS associated with the channel selection mechanism shall be required to provide a uniform spread of the loading of the equipment across a minimum of 14 channels (or 330 MHz), or 255 MHz in the case of equipment used only in the band 5 470 MHz to 5 725 MHz. DFS requirements as described later in this clause will apply to different operational modes per table 6. The supplier shall declare whether the UUT is capable of operating as a Master or as a Slave only. Mika Kasslin, Nokia

8. Requirement Operational Mode Master Slave Channel Availability Check Time X Channel Clearing Time X X Channel Closing Transmission Time X X Channel Move Time X X DFS Requirements • Channel Availability Check Time covered by a Initial Channel Availability Check • Other three requirements guarantee fast and efficient clearing of the operating channel if a radar interfering signal is present • A device capable of operating as a Master shall conform to all the requirements while a device capable of operating as a Slave only shall conform to the three ”last” requirements Mika Kasslin, Nokia

9. Parameter Value Interference Threshold -52 dBm Channel Availability Check Time 10 s Channel Clearing Time 0.2 s Channel Closing Transmission Time 0.02 s Channel Move Time 10 s DFS Requirement Values • Aligned with the values still under study in ITU-R • Located in a normative annex with a following note NOTE: Values in this annex are still preliminary and shall be revisited after the Public enquiry phase before submitting this Candidate Harmonized European Standard to vote. • Radar test signal parameters also located in the same annex Mika Kasslin, Nokia

10. Radar test signal Operating frequency range [MHz] Bandwidth [MHz] Pulse repetition frequency PRF [pps] Pulse width W [µs] Burst length L [ms] / No. of pulses Burst Period B [sec] Radar signal 1 >5250 14 700 1 26 / 18 10 Radar signal 2(Maritime) 5450 – 5820 2 1800 0.2 5 / 10 2 Radar signal 3(Meteorological) 5600 – 5800 0.6 330 2 500 / 165 144 Parameters of DFS Test Signals Mika Kasslin, Nokia

11. TPC & DFS Conformamce Mika Kasslin, Nokia

12. TPC Conformance • Conformance tests as defined with all the details in the HS shall be carried out Mika Kasslin, Nokia

13. DFS Conformance Conformance to radar detection requirements Conformance tests for the requirements defined in clause 4.6.2 are given in clause 5.3.6. Conformance to uniform spreading Conformance tests for the requirement to provide a uniform spread of the loading per clause 4.6.1 are not defined in this standard. Mika Kasslin, Nokia

14. Testing for compliance with technical requirements Mika Kasslin, Nokia

15. Introduction • For each technical requirement given in the HS there is typically a radio test suite defined • Essential radio test suites in the HS are for • Carrier frequencies and channelization • TPC • Tx unwanted emissions outside & within the 5 GHz RLAN bands • Rx spurious emissions • DFS Mika Kasslin, Nokia

16. DFS Test Methods • For an UUT capable of operating as a Master, the test scenario consists of an UUT, a signal generator and a protocol test unit. • For an UUT capable of operating only as a Slave the test scenario consists of an UUT and a protocol test unit. The UUT is capable of transmitting a test transmission sequence. • Three different test scenarios • Initial Channel Availibility Check • Clearing the Operating Channel – Master • Clearing the Operating Channel - Slave Mika Kasslin, Nokia

17. Summary • Harmonized Standard V0_l ready for approval by correspondence (comments by July 22nd) • Will be submitted to PE in late July 2002 • BRAN will address comments from PE in a meeting on Dec 2002 • Submission to vote (2nd phase of the HS approval process) earliest after the Dec BRAN meeting • Entirely up to BRAN • Date depends e.g. on DFS discussions in ITU-R Mika Kasslin, Nokia