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Date: 2011-04-12

Enhancing Channel Availability Query to support database query for multiple locations based on multiple locations. Authors:. Date: 2011-04-12. TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: A A A A A. Abstract.

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Date: 2011-04-12

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  1. Enhancing Channel Availability Query to support database query for multiple locations based on multiple locations Authors: Date: 2011-04-12 Yohannes Alemseged, NICT TexPoint fonts used in EMF. Read the TexPoint manual before you delete this box.: AAAAA

  2. Abstract • This Presentation provides comment resolution for comments related with multiple locations channel availability query. The comments in general refer to the lack of the current TG 802.11af D1.0 draft to address the provision in the FCC 10-174 document that allows loading of channel lists for multiple locations so that mode II devices can operate in commonly available channels without contacting the database frequently. • What is stated in the rule “A Mode II personal/portable device may load channel availability information for multiple locations around, i.e., in the vicinity of, its current location and use that information in its operation. A Mode II TVBD may use such available channel information to define a geographic area within which it can operate on the same available channels at all locations, for example a Mode II TVBD could calculate a bounded area in which a channel or channels are available at all locations within the area and operate on a mobile basis within that area”. FCC 10-174Appendix B Final Rule, Yohannes Alemseged, NICT

  3. Comments to be addressed in this presentation Slide 3 CIDs 117,119,120,121,122,123,124,125, 518, 946 Yohannes Alemseged, NICT

  4. Comments to be addressed in this presentation Yohannes Alemseged, NICT

  5. Comments to be addressed in this presentation Slide 5 Yohannes Alemseged, NICT

  6. Comments to be addressed in this presentation Yohannes Alemseged, NICT

  7. Resolution provided to the comments CIDs 117,119,120,121,122,123,124,125, 518, 946 Yohannes Alemseged, NICT Resolution: Agree in principle, extend the current channel availability query to include the possibility of requesting for common channel list applicable to a bounded geo-graphic area 1. Channel Availability Query Request frame includes one or multiple Device Location Information. 2. Device Location Information determines a bounded geo-graphic area, where the encoding format is country-specific. 3. Database provides the common channel list for a bounded geo-graphic area. 4. If there is no common channel, then Database provides the available channel for the first Device Location Information. 5. Channel Query Info field has bits field for indicating the number of Device Location Information.

  8. Bounded region using a single location and radius information R,0 A (X0 , Y,0,) Yohannes Alemseged, NICT • Example : Location A is specified along with a radius information to represent a circular bounded region

  9. Channel Availability Query extended to support multiple locations channel load Device Location Information is repeated Octets Extended CAQ Yohannes Alemseged, NICT

  10. Explanation: Channel Availability Query extended to support multiple locations channel load • Remarks: • When a Mode II device, uses extended CAQ to request channel availability for a bounded geo-graphic area • The number of Device Location Information is indicated in the channel query info field • Each Device Location Information is provided. The locations will be used to define a bounded geo-graphic area for which common channel list is computed and returned • success to provide common channel list for the bounded geo-graphic area defined by multiple locations is indicated in the reason result code • success to provide channel list for the bounded geo-graphic area defined by the first location is indicated in the reason result code Yohannes Alemseged, NICT

  11. Explanation: The Reason Result Code Table is extended to support multiple locations channel load • Replace Reason Result Code field value 3 with description Success with the Available Channel List result for a bounded geo-graphic area defined by multiple Device Location Information • Modify the result code for success (3) to the result code field value 2 with description Success with the Available Channel List result for a Device Location information Yohannes Alemseged, NICT

  12. Explanation: The channel query info field format is extended to support multiple locations channel load Remove Device Location Information Present bit (B1) Add Number of Device Location Information subfield(B1-B2) indicating the number of Device Location Information field presented in the Channel Availability Query element Modify the reserved field B3-B7 Yohannes Alemseged, NICT

  13. Explanation: The Device Location Information format is modified for a personal/portable AP STA • Indicate that Device Location Information contains radius of a bounded geo-graphic area (B123) • Add radius of the bounded area (B80-B119) Yohannes Alemseged, NICT

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