On Relationship between Timeout and Latency of Connection Re-establishment for Control Packet Loss Scenario in Bluetooth MANETs

Abstract

Bluetooth MANETs, which consist of Bluetooth-enabled terminals, are a prospective methodology for mobile ad hoc networks (MANETs). Since Bluetooth is a connection-oriented and a low-power-consumption communication method, terminals must execute time-consuming connection establishment procedures in advance. We have to solve the following two problems for Bluetooth MANETs: (1) since terminals move within fields, terminals must establish their connection within a limited time. In addition, (2) since the communication area of Bluetooth is narrower than that of other technologies, established connections are easily disrupted. In order to solve problem (1), a low-latency connection establishment method has been proposed. However, there is no countermeasure for problem (2). Therefore, the possibility of rapid re-establishment for connections must be investigated. In this paper, we have proposed a rapid connection re-establishment method for control packet-loss scenarios and have investigated the effect of adjusting the configuration of the connection-establishment timeout parameter. We also have developed a Raspberry Pi-based application for our proposed method and have conducted experiments. We confirmed that our proposed method could re-establish connections in control packet-loss scenarios as the connection-establishment timeout decreases. However, we found that the time it takes to re-establish a connection is significantly long if the connection-establishment timeout configuration is 1 second.