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The wireless local area network standard IEEE 802.11 is the preferred solution for lowcost data services. Key to its success are the 2.4 and 5 GHz unlicensed bands. The transmit power limitations imposed due to regulatory requirements limit the range (coverage) that can be achieved by WLANs in these bands. However, the demand for "larger" wireless infrastructure is emerging, ranging from...
The current development and the application status of the home network are introduced briefly, then, a two-tier architecture of home control system (HCS) based on ZigBee multi-hop mesh network is presented. In addition to the basic data acquisition and processing functions, the gateway which has been designed and fabricated supports ZigBee based wireless access interface, Bluetooth based local interface...
Wireless mesh networks have emerged as a favorable infrastructure that promises to unify the existing 802.11 wireless LANs. With multiple orthogonal channels and possibly multiple interfaces on the mesh nodes, such networks can provide broadband access for a large number of wireless clients. However, efficient assignment of channels to the available network interfaces has long been a daunting task...
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