Enhancing Bluetooth scheduler with adaptive link capacity assignment

Bluetooth is a short-range radio wireless communications technique that can be used to form a personal area network (PAN). The fundamental Bluetooth network structure is called a piconet, which is made of a master and up to seven active slaves. Inside a Bluetooth piconet, all the active devices follow the same frequency hopping sequence, which means the links within the piconet have to share the bandwidth available. Assigning more capacity to one link may sacrifice the benefits of other links. Thus it is very important to collaborate all these links for a higher overall performance In terms of the whole piconet. The Bluetooth scheduler is responsible for allocating the slots to different links. In this paper, we use a delay cost function to determine the best link capacity distribution. Furthermore, we deploy an adaptive link capacity assignment policy in the Bluetooth scheduler, which encourages a Bluetooth piconet to dynamically adjust the slots allocation to condition of the latest traffic flows distribution in this piconet.