Deadline-Aware Scheduling Policies for Bluetooth Networks in Industrial Communications

AIP Conference Proceedings

Tesoriere

Tirrito

2015

The Unmanned Aerial Vehicles (UAV) are aircrafts with no pilot on board. They can be remote controlled aircraft (e.g. flown by a pilot at a ground control station) or can fly autonomously based on pre-programmed flight plans or more complex dynamic automation systems. UAVs are currently used both in military and civil application. A key element of UAV equipment affecting the mission performance is power source for this reason several approaches can be applied in order to reduce the power consumption. Fuzzy Logic Controllers (FLCs) are becoming increasingly popular in everyday life and their applications can obtain significant benefits in terms of energy management. In this paper a FLC is proposed in order to regulate the motor power of a quadrotor helicopter according to the battery level and to the path to complete. Simulation results reveal that using the proposed approach the battery lifetime is increased by 30% with respect to the use of fixed power.

Section: Discussionmentioning

confidence: 99%

A fuzzy controller to reduce power consumption in a quadrotor helicopter for environmental monitoring

AIP Conference Proceedings

Tesoriere

Tirrito

2015

“…Regarding to Bluetooth (Bluetooth, 2010), it is important to underline that it does not natively support real-time communications. As demonstrated by Collotta et al (2013), a deadline-aware scheduling should be introduced in order to ensure the satisfaction of real-time constraints (Collotta et al, 2007). Anyhow, the architecture proposed in this paper is based on the standard Bluetooth protocol, without hardware or software changes.…”

Section: System Architecturementioning

confidence: 99%

New Solutions Based On Wireless Networks For Dynamic Traffic Lights Management: A Comparison Between IEEE 802.15.4 And Bluetooth

Collotta

Transport and Telecommunication Journal

2015

Self Cite

The Wireless Sensor Networks are widely used to detect and exchange information and in recent years they have been increasingly involved in Intelligent Transportation System applications, especially in dynamic management of signalized intersections. In fact, the real-time knowledge of information concerning traffic light junctions represents a valid solution to congestion problems. In this paper, a wireless network architecture, based on IEEE 802.15.4 or Bluetooth, in order to monitor vehicular traffic flows near to traffic lights, is introduced. Moreover, an innovative algorithm is proposed in order to determine dynamically green times and phase sequence of traffic lights, based on measured values of traffic flows. Several simulations compare IEEE 802.15.4 and Bluetooth protocols in order to identify the more suitable communication protocol for ITS applications. Furthermore, in order to confirm the validity of the proposed algorithm for the dynamic management of traffic lights, some case studies have been considered and several simulations have been performed.

“…However, our assumption is not mandatory since it could be possible to implement several distinct traffic classes if several different periodic and aperiodic variables are produced by each Slave. In addition, it is possible to use an S/S communication approach as described in [22]. This approach can be integrated to the functions already present in the BT standard.…”

Section: Wns-based Solutions For Real-time Networkmentioning

confidence: 99%

“…In fact, the development of new functions does not require hardware changes but firmware integrations. The approach shown in [22] called M/S false(EDF+CBSfalse)+S/S false(EDFfalse) provides an integrated support for deadline-aware scheduling of periodic and aperiodic traffic in parallel M/S and S/S communications. Specifically, S/S communications relate only to the periodic traffic while M/S transmissions handle hybrid stations which generate both periodic and aperiodic traffic.…”

Section: Wns-based Solutions For Real-time Networkmentioning

confidence: 99%

“…It is important to underline that Bluetooth does not natively support real-time communications. As demonstrated by [22], a deadline-aware scheduling should be introduced in order to ensure the satisfaction of real-time constraints. Moreover, the energy consumption of Bluetooth is not negligible although this does not represent matter of concern in industrial environments where automation applications usually require working cycles which prevent the adoption of the energy saving policies.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deadline-Aware Scheduling Perspectives in Industrial Wireless Networks: A Comparison between IEEE 802.15.4 and Bluetooth

Collotta

International Journal of Distributed Sensor Networks

Scatà

2013

Self Cite

In industrial contexts, most of process control applications use wired communication networks. The reliability of wired networks is indisputable and extensively demonstrated by several studies in the literature. However, it is important to consider several disadvantages provided by the use of wired technologies, like high deployment and maintenance costs and low network scalability. Although it is difficult to fully replace wired networks, wireless communication protocols have features which could undeniably affect in positive way the production mechanisms in factories. The wireless networks (WNs) are effectively used to detect and exchange information. The main communication protocols, currently available for WNs, however, do not support real-time periodic traffic flows which, as known, mainly characterize industrial networks. In this paper, we will analyze a real-time scheduling algorithm for both periodic and aperiodic traffic management, applied to networks based on IEEE 802.15.4 and Bluetooth, respectively. The main purpose of this research is to reduce, as much as possible, the packet loss on the channel, increasing at the same time the reliability of the wireless technology. Furthermore, the comparison between IEEE 802.15.4 and Bluetooth will allow to identify the more suitable communication protocol for industrial process control systems.