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Operating Classes

Operating Classes. Authors:. Date: 2010-05-16. Abstract. This document contains description of adding Sub-GigaHertz Operating Classes. IEEE 802.11 Publication Status. IEEE 802.11-2007 published and for free download with Get802

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Operating Classes

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  1. Operating Classes Authors: Date: 2010-05-16 Peter Ecclesine (Cisco Systems)

  2. Abstract This document contains description of adding Sub-GigaHertz Operating Classes Peter Ecclesine (Cisco Systems)

  3. IEEE 802.11 Publication Status • IEEE 802.11-2007 published and for free download with Get802 • Publications completed for 802.11k, 802.11r and 802.11y, 802.11n and 802.11w • 11k now available with Get802 • 11r now available with Get802 • 11y now available with Get802 • 11w now available with Get802 • 11n very soon available with Get802 • http://standards.ieee.org/getieee802/802.11.html Peter Ecclesine (Cisco Systems)

  4. Operating Classes and Channel numbers • 11n allows 40 MHz and 20 MHz operation in the same BSS at the same time • Country information does not show current 40 MHz and current 20 MHz channel numbers in Probe Response, so must be changed • Extended Channel Switch does not specify new channels for 40 MHz and 20 MHz after the switch, so must be extended • Is possible to have three channel bandwidths in same band at same time (5-, 10-, 20-MHz), so operation with three bandwidths should be specified • 11-10/210 created Global Operating Class table • First index is frequency band, numbers below 81 are reserved • First subindex is channel bandwidth, largest to smallest • Values of 192+ are Vendor Specific, based on OUI Peter Ecclesine (Cisco Systems)

  5. Global Operating Classes • Operating Class / Channel Number tuples in every command and report • See 11-10/210r8 Table I-2 and J-4 • Context includes Country information, regulatory requirements, transmit power, exchange of OUIs and non-standard behaviors • Vendor Specific operating classes are used to carry information not defined in this standard within a single defined format, so that reserved operating classes are not usurped for nonstandard purposes and so that interoperability is more easily achieved in the presence of nonstandard information. Peter Ecclesine (Cisco Systems)

  6. Sub-GHz Operating Classes • One mandatory class per subband/channel bandwidth, knowing the regulatory domain of operation • 6 Mandatory/optional classes: 450-510 MHz, 779-787 MHz, 863-870 MHz, 896-960 MHz, 1427-1518 MHz, 2400-2497 MHz for 200 kHz Generic PHY • Other Mandatory/optional classes for 802.11 PHYs? • Many TVWS classes are being defined in 802.11af • Everything else to be Vendor-Specific – operating classes 192-253 Peter Ecclesine (Cisco Systems)

  7. Operating Classes Issues • AP/BSS is considered to be operating under a list of current operating classes. This affects two things: • On doing an extended channel switch,  you potentially change from one list of class/channel tuples to a different list. • A STA prior to association needs the intersection of the set of operating classes it supports and those in operation at the AP to be non-empty • Negotiating context information • Country information, regulatory requirements, transmit power, exchange of OUIs and non-standard behaviors, receiver configuration per class • TBD receiver configuration following Extended Channel Switch Peter Ecclesine (Cisco Systems)

  8. Reference Material Peter Ecclesine (Cisco Systems)

  9. Focus is on consistency across all WGs: • P802.11mb_D3.0 • 11-10/210r8 Operating Classes • d1P802.15-4g_Draft_Standard Peter Ecclesine (Cisco Systems)

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