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Because of the low throughput and the high packet error rate in wireless communications, the network traffic often converges at access points (APs), which take a role of connecting wired and wireless communication interfaces, and APs are usually bottleneck points in wireless networks. In heterogeneous networks, various networks are around mobile devices. Furthermore, today's mobile devices have various...
The 2.4 GHz ISM band is one of the most widely used radio bands, and many wireless communication techniques, such as IEEE 802.11, Bluetooth (BT), and ZigBee, use the band. Thus, the interference problem in the band has been an important issue. BT uses BT channel maps which indicate qualities of BT channels to reduce the interference. Fundamentally, the channel map is created after a connection between...
These days, since many mobile devices support Wi-Fi, the number of Wi-Fi hotspots are increasing. At the same time, the number of places where users can use wireless LAN are increasing. Unlike the cellular network, the traffic of wireless LAN may not be distributed evenly because there is no supervisor to control the network traffic. In addition, due to the low throughput and the high packet error...
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