IEEE 802.1 Qbv is a TSN standard for enhancement for scheduled traffic and specifies time aware queue-draining procedures based on the timing derived from IEEE 802.1 AS. It adds transmission gates to the eight priority queues, which allow low priority queues to be shut down at specific times to allow higher priority queues immediate access to the network at specific times.
GEM supports IEEE 802.1Qbv by allowing time-aware control of individual transmit queues. GEM has the ability to enable and disable transmission on a particular queue on a periodic basis with the ON or OFF cycling, starting at a specified TSU clock time.