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According to the current IEEE 802.11e HCCA standard, if more than three video sessions are to be in service in a WSTA, some of them must share the TXOP because the number of TSIDs assigned to video transmission is two. In order to resolve the problem, we devise a method in which up to 15 video sessions can be accommodated by slightly modifying the frame(More)
Wireless mobile networks and devices are broadly spread out as they provide users convenient access to information. Particularly, the mobile ad hoc networks (MANETs) that make no use of wired infrastructure is receiving growing interests with the underlying widely deployed 802.11 wireless LAN. With the expanding scope of applications of MANETs, the need for(More)
—In this letter, we propose a novel model and corresponding algorithms to address the optimal utility max-min fair link adaptation in Downlink MultiUser (DL-MU) feature of the emerging IEEE 802.11ac WLAN standard. Herein, we first propose a simple yet accurate model to formulate the max-min fair link adaptation problem. Furthermore, this model guarantees(More)
—In order to cope with the ever-increasing demand for high throughput WLANs, IEEE 802.11ac standard will support a wide range of new features, including downlink multiuser MIMO and higher order modulation in its physical layer. This paper addresses the design of the rate selection and transmission power allocation in downlink multiuser mode of this(More)
The inherent characteristics of the wireless channel, such as broadcast communication and high variability in channel quality, make it difficult to achieve high throughput in wireless mesh networks (WMNs). However, some innovative techniques like wireless inter-flow network coding and opportunistic routing leverage the broadcast nature of the wireless(More)
In this paper, we propose a novel scheme for efficient video broadcasting on WLAN using IEEE 802.11e HCCA MAC protocol and H.264/SVC video compression technology. We rearrange an outgoing sequence of H.264/SVC NAL units according to the prioritization of their dimension, temporal, and quality scalability. In addition, our proposed scheme broadcasts the(More)