FCC TVWS Terminology

1. FCC TVWS Terminology Authors: Date: 2011-01-14 Peter Ecclesine, Cisco

2. Abstract Presentation shows message paths required in USA and some that are allowed in USA to query Authorized databases. Peter Ecclesine, Cisco

3. Some Defined elements Others define the Authorized database protocols that APs and Fixed devices shall use, and each AP is certified to operate with a specific Authorized TV bands database. A Registered Location Secure Server accesses the Authorized databases with protocols that others define, and may provide a persistent internet address to the databases. APs and 802.11 stations access a Registered Location Secure Server with radio protocols that IEEE 802.11 defines. Peter Ecclesine, Cisco

4. Message elements that are country specific • This is who I am • This is what I am • This is where I am • This is what I permit (for stations that receive my frames) Peter Ecclesine, Cisco

5. Terminologies • FCC Legal terms. • Personal/Portable Mode II device • Personal/Portable Mode I device • Fixed device • Contact Verification Signals • Enabling Signal • IEEE 802.11 Standard terms. • Fixed device • Enabling STA • Dependent STA • Contact Verification Signal Peter Ecclesine, Cisco

6. FCC Mode II device • Mode II device • A personal/portable TVBD that uses an internal geo-location capability and access to a TV bands database • either through a direct connection to the Internet or through an indirect connection to the Internet by way of fixed TVBD or another Mode II TVBD, to obtain a list of available channels. • A Mode II device may select a channel itself • initiate and operate as part of a network of TVBDs, transmitting to and receiving from one or more fixed TVBDs or personal/portable TVBDs. • A Mode II personal/portable device may provide a list of available channels to a Mode I personal/portable device for operation on by the Mode I device. Peter Ecclesine, Cisco

7. FCC Mode I device • Mode I device • A personal/portable TVBD that does not use an internal geo-location capability and access to a TV bands database to obtain a list of available channels. • A Mode I device must obtain a list of available channels on which it may operate from either a fixed TVBD or Mode II personal/portable TVBD. • A Mode I device may not initiate a network of fixed and/or personal/ portable TVBDs, nor may it provide a list of available channels to another Mode I device for operation by such device. Peter Ecclesine, Cisco

8. FCC Fixed device • Fixed device • A fixed TVBD that uses access to a TV bands database, and is professionally installed or uses an internal geo-location capability. • obtains a list of allowed TV channels either through a direct connection to the Internet or through an indirect connection to the Internet by way of a fixed TVBD to obtain a list of available channels. • A fixed device may select a channel itself • initiate and operate as part of a network of TVBDs, transmitting to and receiving from one or more fixed TVBDs or personal/portable TVBDs. • A fixed device may provide a list of available channels to a Mode I personal/portable device for operation on by the Mode I device. Peter Ecclesine, Cisco

9. FCC Contact Verification Signals • Definition and Requirements • An encoded signal broadcast by a fixed or Mode II device • For reception by Mode I devices to which the fixed or Mode II device has provided a list of available channels for operation • It shall be encoded to ensure that the signal originates from the device that provided the list of available channels • Purpose • To establish that the Mode I device is still within the reception range of the fixed or Mode II device • To validate the list of available channels used by the Mode I device Peter Ecclesine, Cisco

10. FCC Contact Verification Signals • Device Operation • A Mode I device may respond only to a contact verification signal from the fixed or Mode II device that provided the list of available channels on which it operates. • A fixed or Mode II device shall provide the information needed by a Mode I device to decode the contact verification signal at the same time it provides the list of available channels. Peter Ecclesine, Cisco

11. IEEE 802.11 terms • dependent station (STA): A STA that is not registered and whose operational parameters are dictated by messages it receives from an enabling STA. Once enabled by the dynamic STA enablement (DSE) process, a dependent STA's continued operation becomes contingent upon being able to receive messages from its enabling STA over the air. • enabling station (STA): A registered STA that has the authority to control when and how a dependent STA can operate. An enabling STA communicates an enabling signal to its dependents over the air. An enabling STA chooses whether other dynamic STA enablement (DSE) messages are exchanged over the air, over the distribution system (DS), or by mechanisms that rely on transport via higher layers. Peter Ecclesine, Cisco

12. IEEE 802.11 terms (2) • fixed station (STA): A STA that is physically attached to a specific location. In licensed bands, a fixed STA might be authorized to operate only at a specific location. • contact verification signal (11af D1.0): The Contact Verification Signal frame is transmitted by an enabling STA to establish that its dependent STAs are still within the reception range of the enabling STA and to validate the available channel list. An enabling STA with dot11ContactVerificationSignalActivated set to true shall transmit a unicast Protected CVS frame (see 8.5.8.31 (Contact Verification Signal frame format)) to its dependent STAs to whom the enabling STA has provided WSMs. Peter Ecclesine, Cisco

13. References • 802.11-11/0067r1 FCC TVWS orders Jan 11 consolidated text • IEEE P802.11af Draft 1.0 • FCC 10-174 Peter Ecclesine, Cisco