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Over the past few years, several backoff algorithms such as Exponential Increase Exponential Decrease (EIED) and Adaptive Enhanced Distributed Coordination Function (AEDCF)) have been proposed for wireless local area networks to improve channel access. We propose a new backoff technique that monitors the number of backoff counter pauses experienced and(More)
—The IEEE 802.16j standard supports multihop relay function for WiMAX network. The relay technique could enhance the signal strength and help the devices to compete the shadow fading effect from buildings. How to allocate resource becomes an important issue in recent research. In this paper, we discuss the resource allocation with directional antenna in(More)
Multimedia communications over the Internet have undergone considerable growth in recent years thanks to various mature technologies. However, the well-known wireless standard IEEE 802.11 cannot provide adequate bandwidth and jitter for multimedia communications. In this paper, a dual-mode access scheme with QoS features is proposed to solve the asymmetric(More)
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