bluethooth is the technology using BSS(binary service set) nd in BSS we have one master nd its seven slaves which we called PICONET nd when more then seven users we use SCATTERNET.
Bluetooth is an industrial specification for wireless personal area networks (PANs). Bluetooth provides a way to connect and exchange information between devices such as mobile phones, laptops, PCs, printers, digital cameras, and video game consoles over a secure, globally unlicensed short-range radio frequency. The Bluetooth specifications are developed and licensed by the Bluetooth Special Interest Group.