With the rapid growth in the popularity of multimedia applications, such as voice-over-IP and video conferencing, the demand for high bandwidth and Quality-of-Service (QoS) in WLANs is increasing dramatically. There are many inherent QoS limitations in Distributed Coordination Function (DCF) and the system efficiency is considerably affected by various overheads referred to as control frames,
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ZigBee is designed as a low-cost, low-power, low-data rate wireless network technology. ZigBee technology uses the globally available, license-free 2.4GHz frequency band, and it’s physical layer and MAC layer based on the IEEE 802.15.4 standard for wireless personal area networks. Wireless sensor network is a combination of sensor technology, embedded, and now communication networks, wireless
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