Conference Paper

Optimizing the WiMedia Frame Structure for Home Networking Applications

Comput. Sci. & Eng., Univ. at Buffalo, Buffalo, NY, USA
DOI: 10.1109/GLOCOM.2010.5684019 Conference: Global Telecommunications Conference (GLOBECOM 2010), 2010 IEEE
Source: IEEE Xplore


We focus on a new class of home networking applications that enable wireless communication between multimedia devices using the WiMedia MAC protocol. Applications like streaming video from DVD players to HDTVs, generate high data rates and can easily saturate the bandwidth even at the rates provided by UWB transmissions. Thus we need to enhance the MAC layer to improve bandwidth utilization and efficiently handle the requirements of such applications. In this paper, we propose a new TDMA frame structure for the WiMedia MAC protocol that uses the specific characteristics of the traffic to minimize MAC and PHY overhead while providing delay bounds within the tolerable limits of the applications. Our results show that the proposed frame structure can provide up to 10% increase in bandwidth utilization over the WiMedia frame structure and achieve a throughput gain of about 48Mbps at the highest data rate of the MB-OFDM physical layer.

Full-text preview

Available from:
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, we propose relay transmission protocol based on SoQ (Satisfaction of QoS) for QoS enhancement and analyze the performance of the proposed method in Wireless USB Networks. In the proposed protocol, Wireless USB host executes the Satisfaction of QoS (SoQ) time slot allocation algorithm. And, in order to give devices with scarce resource another chance to improve QoS, the proposed relay transmission protocol helps the device utilize another indirect link maintaining the required QoS resources via a relay node.
    ICT Convergence (ICTC), 2012 International Conference on; 10/2012
  • [Show abstract] [Hide abstract]
    ABSTRACT: WiMedia MAC is an attractive transmission technology for high rate multimedia streaming and high quality consumer electronic devices in wireless personal area networks. In this paper, we propose a deterministic channel access (DCA), where all the devices determine their transmission orders in a distributed manner by exchanging beacon frames in the beacon period. Since all of the devices follow a deterministic transmission order, collision-free channel access can be achieved and thus the throughput can be significantly improved. In addition, the DCA addresses unfairness problems found in channel access by using circulating reference points. The trace-driven simulation results demonstrate that the DCA outperforms the existing channel access schemes in WiMedia MAC under different situations, especially under bursty traffic.
    Wireless Networks 10/2012; 18(7). DOI:10.1007/s11276-012-0432-5 · 0.96 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: Merits of distributed medium access control specified by WiMedia Alliance such as distributed nature and high data rate make it a favorite candidate standard for high rate wireless personal area network. However, the current WiMedia MAC standard has not considered supporting Quality of Service (QoS) even though QoS parameters such as a range of service rates are provided to each traffic stream (TS). Therefore, we propose a fair and QoS-aware resource allocation method that provides a fair and maximized QoS for all TSs according to the current traffic load condition and differentiates SoQ among different QoS classes while guaranteeing fairness of SoQ within a QoS class in a fully distributed manner. Even in case that the traffic load varies, each device independently recognizes the changes and calculates fair and maximum allowable service rates for TSs. From the simulation results, it is proven that the proposed method achieves high capacity of TSs and fair QoS provisioning under various traffic load conditions.
    Wireless Personal Communications 03/2014; 75(1):627-643. DOI:10.1007/s11277-013-1382-7 · 0.65 Impact Factor
Show more