Performance evaluation of the IEEE 802.11aa multicast mechanisms for video streaming

Abstract

Video traffic is foreseen to account for the majority of the Internet traffic in the near future. While the demand of video transmission keeps growing, the vast majority of wireless equipment deployed in the home environment, based on IEEE 802.11, cannot satisfy the amount of bandwidth that the video applications require. In order to cope with the increasing demand of multimedia traffic, the IEEE 802.11aa Task Group has recently standardized new mechanisms to allow efficient and robust transmission of multicast flows in Wireless LAN. However, the standard leaves open the choice of which one to use for a given scenario. In this paper, we explore the new mechanisms introduced by the 802.11aa Task Group, providing insights of the new choices for handling group addressed frames, by carrying out extensive simulations. Our results highlight the various trade-offs each mechanism has in terms of robustness, resource consumption and complexity, and provide a set of recommended guidelines for their use.

Performance Analysis and Algorithm Selection for Reliable Multicast in IEEE 802.11aa Wireless LAN

“…According to the results of [31], larger values of R only increases reliability marginally while degrading efficiency severely. c We set up the MSDU lifetime to the maximum delay recommended by ITU-T G.114 for interactive real-time multimedia.…”

Time-Sensitive Networking in IEEE 802.11be: On the Way to Low-Latency WiFi 7

“…To outperform IEEE 802.11e operation for real-time multimedia content delivery, IEEE 802.11aa introduced the intra-AC traffic differentiation functionality, with the definition of two new time-critical voice and video ACs [ 11 ]. The capabilities of IEEE 802.11e/aa enhancements to improve the performance of delay-sensitive traffic in WLANs has been widely considered in the literature [ 12 , 13 , 14 ]. However, in general, none of the IEEE 802.11 mechanisms guarantee the quality of service of heterogeneous real-time streams when a WLAN is overloaded [ 15 ].…”

Improvements to Multimedia Content Delivery over IEEE 802.11 Networks

“…The main highlights and limitations of 802.11aa have been widely examined in the literature [44,45,46], and are summarized in Table 1.1. Despite the improvements achieved, it has been shown that each of these mechanisms is only suitable for a specific type of scenario.…”