Agenda Please read the following docs before the BOF: Problem statement: http://www.ietf.org/id/draft-patil-paws-problem-stmt-01.txt Use case scenarios: http://www.ietf.org/id/draft-probasco-paws-overview-usecases-00.txt 1. Overview and background of White space technology (15 Mins) 2. Database architecture (10 Mins) 3. Proposed charter and the work to be done in IETF (10 Mins) 4. Open discussion (20) 5. Conclusion (Show of hands/Hum) Proposed Charter of the WG to be formed (if approved): Governments around the world continue to search for new pieces of radio spectrum which can be used by the expanding wireless communications industry to provide more services in the usable spectrum. The concept of allowing secondary transmissions (licensed or unlicensed) in frequencies allocated to a primary user is a technique to "unlock" existing spectrum for new use. An obvious requirement is that these secondary transmissions do not interfere with the primary use of the spectrum. Often, in a given physical location, the primary user(s) may not be using the entire band allocated to them. The available spectrum for a secondary use would then depend on the location of the secondary user. The primary user may have a schedule when it uses the spectrum, which may be available for secondary use outside that schedule. The fundamental issue is how to determine for a specific location and specific time, if any of the primary spectrum is available for secondary use. One simple mechanism is to use a geospatial database that records protected contours for primary users, and require the secondary users to check the database prior to selecting what part of the spectrum they use. Such databases could be available on the Internet for query by secondary users. In a typical implementation of geolocation and database to access TV white space, a radio is configured with, or has the capability to determine its location in latitude and longitude. At power-on, before the device can transmit or use any of the spectrum set aside for secondary use, the device must identify the relevant database to query, contact the database, provide its geolocation and receive in return a list of unoccupied or "white space" spectrum (for example, in a TV White space implementation, the list of available channels at that location). The device can then select one of the channels from the list and begin to transmit and receive on the selected channel. The device must query the database subsequently on a periodic basis for a list of unoccupied channels based on certain conditions, e.g. a fixed amount of time has passed or the device has changed location beyond a specified threshold. The proposed working group will : - standardize a protocol for querying the database, which includes a location sensitive database discovery mechanism and security for the protocol, and application services. The databases are expected to be reachable via the Internet and the devices querying these databases are expected to have some form of Internet connectivity, directly or indirectly. The databases may be country specific since the available spectrum and regulations may vary, but the fundamental operation of the protocol should be country independent. The solution will not be tied to any specific spectrum, country, or phy/mac/air interface but may incorporate relevant aspects of these as needed for proper operation. Since the location of a user device is involved, privacy implications arise, and the protocol will have to have robust security mechanisms. Existing IETF location data structures and privacy mechanisms may be considered for use. Database discovery may also make use of existing IETF work. Milestones Sep 2011 Submit 'Requirements and Framework' to the IESG for publication as Informational Apr 2012 Submit 'Protocol for Querying a Whitespace Database' to the IESG for publication as Proposed Standard