Abstract
We integrate, for the first time in the literature, the following ingredients to deal with emerging dynamic spectrum management (DSM) problem in heterogeneous wireless sensors and actuators networks (WSANs), Internet of things (IoT) and Wi-Fi: (i) named-based routing to provide provenance and location-independent access to control plane; (ii) temporary storage of control data for efficient and cohesive control dissemination, as well as asynchronous communication between software-controllers and devices; (iii) contract-based control to improve trust-ability of actions; (iv) service-defined configuration of wireless devices, approximating their configurations to real services needs. The work is implemented using NovaGenesis architecture and a proof-of-concept is evaluated in a real scenario, demonstrating our approach to automate radio frequency channel optimization in Wi-Fi and IEEE 802.15.4 networks in the 2.4 GHz bands. An integrated cognitive radio system provides the dual-mode best channel indications for novel DSM services in NovaGenesis. By reconfiguring Wi-Fi/IoT devices to best channels, the proposed solution more than doubles the network throughput, when compared to the case of mutual interference. Therefore, environments equipped with the proposal provide enhanced performance to their users.
Highlights
The technology evolution has been based on diverse disruptive technologies, which start to converge towards deeply integrating physical and virtual worlds; a trend that has been called digital transformation [1]
Our architecture can be employed to any kind of wireless communication protocol, since SDR senses all RF signals present over a desired frequency bandwidth
Scenario, we choose two standards that might be commonly seen in the same ambient: (i) IEEE 802.15.4, composed by fourteen Internet of things (IoT) motes sharing the geographical space; (ii) IEEE 802.11 (Wi-Fi) devices
Summary
The technology evolution has been based on diverse disruptive technologies, which start to converge towards deeply integrating physical and virtual worlds; a trend that has been called digital transformation [1]. Disruptions are emerging in connectivity, controllability, virtualization, expressiveness, content distribution and resources management. The Internet of Things (IoT) [2] is an example of disruption that has been covering connectivity, expressiveness and resources management. Expressiveness can be defined as the ability to express meaning [3]. Connected sensors provide all kind of physical world data, generating context for services and applications. Connected actuators reflect back to physical world decisions made at software level. Things’ representatives (smart objects) act as proxies, representing physical world devices towards service level dynamic composition [4]
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