On Availability and Energy Consumption of the Fast Connection Establishment Method by Using Bluetooth Classic and Bluetooth Low Energy

Bluetooth is a low-energy consumption communication technology and a prospective communication method for emergency situations. A Classic Bluetooth communication network has been proposed and designed to establish an emergency mobile ad hoc network (hereinafter referred to as Classic Bluetooth MANETs). In Classic Bluetooth MANETs, a terminal can cause an excess of connection retries and connection conflicts. These problems can slow down the time it takes to establish connections. Therefore, time-consuming connection establishment causes the degradation of the operation rate in Bluetooth MANETs. In this paper, we propose a new fast connection establishment method by using both Bluetooth Classic and Bluetooth Low Energy (BLE) technologies. We have also implemented and evaluated our proposed method through real terminal experiments. As a result, we have confirmed that the connection latency of our proposed method is almost 75 percent lower than that of Classic Bluetooth MANETs and the energy consumption of our proposed method is less than that of Classic Bluetooth MANETs.