A Study on Construction of AdHoc Network with BLE Advertisement In Japan, there is a high chance of getting damage from earthquakes, tsunamis, and typhoons so we need to quickly get information about where to evacuate. Under such a situation, the deaf people are hard to get information because a lot of emergency information is delivered by sound. For them, information by vision is more suitable. We developed information delivery system with Bluetooth Low Energy. In this paper, we analyzed packet reaching rate with three nodes hopped and checked the behavior of routing function and discuss the performance of an adhoc network with BLE Advertisement. The performance includes the reachability of transmitted packets, the routability of the routing protocol we developed and the power consumption of BLE. The reachability is important because emergency information must reach at high rate. The routability is also important because nodes move and routes of one node to another node should quickly updated. The low power consumption of BLE is further important because nodes like smartphones have limited battery. From these three points of view, we had investigated whether

On the Effect of BLE Beacons on Fast Bluetooth Connection Establishment Scheme Mobile ad hoc networks (MANETs) consist of mobile terminals, such as smartphones or tablets. In Bluetooth MANETs, mobile terminals communicate with each other using Bluetooth without communication infrastructures such as base stations. Therefore, Bluetooth MANETs are deemed to be one of the communication schemes to disseminate data when base stations cannot be used in case of disaster. Since data dissemination capability or network scale that can be built deeply depends on connection establishment performance in Bluetooth MANETs, a fast Bluetooth connection establishment scheme has been proposed to establish Bluetooth connections rapidly. The fast Bluetooth connection establishment scheme combines Classic Bluetooth and Bluetooth Low Energy (BLE), and it has advantages of two different Bluetooth standards. BLE beacons utilize advertising packets of BLE to broadcast data to adjacent terminals. Since the fast Bluetooth connection establishment scheme also utilizes BLE to detect adjacent terminals, it is thought that the radio interference cause delay in detecting adjacent terminals when there are many BLE beacons within wireless range. In this paper, we conducted the simulation experiments in the Bluetooth MANETs environment to evaluate the effects of BLE beacons on the connection establishment by the fast Bluetooth connection establishment scheme.