Bluetooth scatternet formation: A survey
Ad Hoc Networks
A framework for building Bluetooth scatternets: A system design approach
Pervasive and Mobile Computing
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Scatternet formation must be addressed before any adhoc network protocol can be run over Bluetooth. This isdue to the frequency hop nature and piconet unit ofBluetooth. In this paper, a protocol stack of Bluetoothgroup ad hoc network and a "blue-star island" networkformation algorithm are proposed. The network formationlocates within Bluetooth Network Encapsulation Protocol(BNEP) layer and is beneath the routing protocol. Themain task of network formation is to establish andmaintain Bluetooth network topology with betterperformance and in a fast and economic way. The routingprotocol is mainly to find the best routes among theexisting network topology. The network formationcommunicates with routing protocol and managemententity using "Routing Trigger" mechanism. The "blue-starisland" algorithm is a distributed 2-stages scheme. First, agroup of neighbor nodes are self-organized into "blue-starisland", where the joint node is slave in scatternet. Then,initiated by "Routing Trigger" from routing protocol,blue-star islands are bridged together. The "Routingtrigger" can be "Route REQuest" message or "HELLO"message. The design has no assumption on number,distribution and mobility of nodes. We present discussionand simulation results that show the proposed algorithmhas lower formation latency, maintain consume andgenerates an efficient and good quality of topology forforwarding packet.