MotivationHighlights: Proof of Concept
During the first months of work, WP7 has been focused on the definition and description of the Platform Architecture, which first steps can be found in D7.1.
At this stage in the QoSMOS Project, the definitive set of Proof of Concepts has been defined and approved. The four different test beds are presented below.
QoSMOS Proof of Concepts
The QoSMOS Proof of Concepts are the way to demonstrate, assess and validate certain Cognitive Radio functionalities previously selected, as well as a set of diverse building blocks developed within the different previous work packages.
In order to properly execute these tests a complete set of hardware and software tools is required, where the following resources can be found:
- Multiple baseband signal generator and RF Up-converters
- VMware to implement virtual machines
- Real-time sensing and PHY integration
- Ettus USRP platforms
- TeleVision White Spaces Database
PoC #1 Primary scene and sensing engine
The initial PoC employs a scene emulator and energy-based HW sensors in order to address several tests like the frequency accuracy of the sensing and its latency, the probabilities of occurring a misdetection of an Incumbent User or a false alarm, and the time response to any change in the environment.
PoC #2 Flexible Transceiver
This PoC implements an original PHY layer adapted to Cognitive Radio requirements, thus providing quite relevant information about complexity, and being the QoS monitoring its key feature.
PoC #3 Distributed/Collaborative sensing
The proposed set-up, which comprises a mesh of sensing devices (Opportunistic Users), a data fusion unit (Opportunistic User Base Station or Access Point) and an Incumbent User signal emulator, intends to validate the data fusion and distributed algorithms developed for cooperative sensing as well as the flexible transceiver architecture elaborated for the distributed environment case.
PoC #4 Integrated Proof of Concept
Its goal consists in integrating some of the selected demonstrations from the first three categories while adding some others in order to showcase an integrated live Cognitive Radio system. In addition, this PoC will aid in scenario assessment evaluation.
The scenario envisioned includes an opportunistic User Equipment doing handovers between TVWS bands and/or between TVWS and licensed cellular systems, and will serve to demonstrate certain CM-RM functionalities, verify CM-SM concepts, integrate a TVWS database with flexible radio hardware to demonstrate self-choice of radio spectrum and power levels and provide a middleware to QoSMOS in the form of an Adaptation Layer to dispatch and exchange messages among the system entities.
