The 802.11e standard suggests a specific access category (AC) for video traffic and recommends priorities 4 and 5 for video.
The objective of 802.11e EDCA and the service differentiated classes of ACs (voice, video, generic data) have been well described in Section 1. Figure 1 shows the priorities of these ACs, from high to low, where AC[3] has the highest one and AC[0] has the lowest one.
Whether or not the Pentagon was behind the public release of this footage – the depiction of combatant deaths is a legal grey area in international humanitarian law – the AC-130 videos fit within its strategy to deliver a vision of a clean, surgical war scrubbed of suffering or death.
The PlayDock i also has some other unique features like a headphone jack, the ability to run on AC or batteries, video out for your photos and videos, and a carrying handle.
It also indicates in-flight amenities like audio, video, AC power and Internet.
An obvious problem for 802.11e lies in the fact that the reserved AC queue for video traffic, i.e., AC[2], is FIFO based, and thus no room is available for further differentiation among video packets themselves based on their importance level which is inferable by a modern video coding technology from the application layer.
Whenever one of the (primary, alternative) queues for the video AC is empty, the weighting factor of the non-empty one becomes 100%% in order for its head-of-line video packet to be passed to VI-EDCAF; otherwise, consider the following.
In this study, to demonstrate the superiority of VQD over PWD and SCS-CR, we have also implemented a simplified version of credit-based scheduling algorithm for the 802.11aa double-queue framework of the video AC, rooted from Annex L of both IEEE 802.1Q and IEEE 802.1Qav and based on the following design principles.
Due to running in the full contention mode, the traffic sources from the Internet were needed to control/adjust the congestion levels of other non-video AC queues, in terms of the number of cross-traffic flows, denoted by n, running from 1 to 6 to represent light to heavy congestion levels respectively.
With its ability to loiter continuously for 24 hours or more at 15,000 feet above the battlefield, the Predator can send live video to AC-130 gunships or command posts around the world without putting American pilots at risk.
In 802.11 EDCA, the traffic is divided into four access categories (ACs): voice traffic (AC_VO), video traffic (AC_VI), best-effort traffic (AC_BE), and background traffic (AC_BK).
