IEEE 1609-4-2011 pdf download IEEE Standard for Wireless Access in Vehicular Environments (WAVE)— Multi-channel Operation
control channel (CCH) interval: A specified periodic interval of time with respect to CoordinatedUniversal Time (UTC). During the CCH interval a device using alternating channel access will tune to theCCH. and outside the CCH interval the device will tune to a channel other than the CCH. A CCH intervaland the subsequent service channel (SCH) interval comprise a sync interval.
Ethertype: The Ethernet Type field specified in IETF RFC 1042, used to identify the higher layer protocolabove the Logical Link Control(LLC)
guard interval: A time interval at the start of each control channel (CCH) interval and service channel(SCH) interval during which devices that are switching channels do not transmit.
higher layer: A functionality (e.g., an application), residing, in the context of the Open SystemInterconnection (OSl) protocol suite reference model, in the management or data plane above the servicesdefined in this standard.
managed Wireless Access in Vehicular Environments (WAVE) device: A WAVE device that supportsmanagement through the use of an lEEE 1609 standards-defined management information base.
management ID: Identifier of an IEEE 1609 management entity used to indicate the source and destinationof management information. The values are specified in IEEE P1609.0.
multi-channel operation: The operation of a Wireless Access in Vehicular Environments (WAVE) devictto utilize more than one wireless channel May involve channel coordination.
multi-physical layer (PHY) device: A Wireless Access in Vehicular Environments (WAVE) devicecapable of simultaneous operation on multiple radio channels.
OCBEnabled: Indicates operation outside the context of a basic service set as specified inIEEE Std 802.1lp (by setting dotl1OCBEnabled to TRUE)(i.e., used for WAVE operation).
pseudonymity: A property of a pseudonymous entity. A pseudonymous entity has the property that itspermanent or long-lived identities, and its long-term patterns of behavior, cannot be deduced from itsnetwork traffic and are only available to appropriately authorized parties.
service channel (SCH): Any channel that is not the control channel, intended for management frames andhigher layer information exchanges (Wireless Access in Vehicular Environments (WAVE] Short MessageWSMs and Internet Protocol version 6 (IP6] packets). There may be more than one service channeldefined in a given spectrum.
service channel (SCH) interval: A recurring time interval during which a device using alternating channelaccess will tune to an SCH and outside of which the device will tune to the CCH.An SCH interval and thepreceding CCH interval comprise a sync interval.
single-physical layer (PHY) device: A Wireless Access in Vehicular Environments (WAVE) device notcapable of simultaneous operation on multiple radio channels.
switching device: A WAVE device with at least one physical layer (PHY) that is switching betweenchannels (eg., service channel [SCH and control channel [CCH).
sync interval: A repeating tie interval comprised of one control channel (CCH) interval followed by oneservice channel(SCH) interval.
Timing Advertisement frame: A management frame specified in IEEE Std 802.11p used to carry timinginformation.