1. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE WP8 – Tests Ghent CREW Facilities Description 3rd Review Meeting Cartif-Brussels 17/12/2014 Arduino SA, D. Cuartielles

2. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE As explained on D8.1  Aim ◦ We need to test a series of scenarios where as many devices as possible try to use the WiFi part of the spectrum to communicate towards the DI simultaneously.  Process ◦ Place a series of real devices in parallel with a series of simulated devices to operate in the same part of the spectrum to better understand the potential risks in terms of saturation.  Where ◦ CREW facilities, Ghent.

3. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE About the w-iLab.t wireless testbed  Description ◦ Open federated test platform that is used for experimental research on advanced spectrum sensing, CR and cognitive networking strategies.  Main aspect of the facilities ◦ Has 5 properly equipped wireless testbeds.  Metrics offered by the premises ◦ Reliability: communication reaching the receivers. ◦ Packets sent/received: The total amount of packets sent or received. ◦ Radio-sleep percentage: This is the primary energy efficiency metric for WSN and similar networks of embedded devices. ◦ WiFi throughput: Visualizes the network wide WiFi throughput. ◦ Message delay: Average time elapsed prior to being completely received on the receiver end. ◦ Application level events: the amount of network wide events visualized over time, include packet sending, receiving, errors and boot times.

4. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE Test 1 - Configuration scenario  Description ◦ Initialization procedure in a real life scenario where a whole building could have a couple of hundreds of access points at once. ◦ There will be 9 real devices and up to 50 virtual ones in the test acting as WiFi access points at the same time. ◦ We will try to establish a connection to one of the real ones in order to configure it.  Main need from the facilities ◦ Emulation of other appliances in an attempt to saturate the wireless spectrum.  Expected outcome ◦ The saturation of the wireless spectrum around a certain channel should provoke a higher amount of communication errors, we hope to see the quality of the communication decrease. At the same time we would like to know from which point it becomes unusable. There are cognitive networking strategies (not implemented here) that could probably prevent errors in a scenario like this.

5. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE Test 2 - Single network set-up  Description ◦ Simulation of a full-chain of communication between appliances and DI within the same network (with no interference from neighboring networks/devices). ◦ The test will validate the interference avoidance mechanisms, such as listen-before-talk, designed to resolve the collision between the same type of networks. ◦ There will be one virtual iNode acting as home gateway, and a series of real devices and other iNodes acting as appliances.  Main need from the facilities ◦ Emulation of other appliances in an attempt to saturate a certain communication channel.  Expected outcome ◦ The protocols designed within SandS should ensure a certaing QoS up to a certain degree, we want to empirically test when the saturation happens.

6. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE Test 3 - Multi-network set-up  Description ◦ Real-life simulation of highly saturated WiFi spectrum with multiple networks operating and fully overlapping (the same bands) and partially overlapping bands (e.g. WiFi channels 1, 2 and 3).  Main need from the facilities ◦ The nodes and virtual networks established will generate huge amounts of traffic (both SandS related and random) and will be therefore able to simulate events such as peaks and realistically asses the behavior of SandS system in real-life scenarios.  Expected outcome ◦ We expect seeing how saturation affects to the quality of the communications. We need to empirically test when the DI should decided the communication is not good enough to ensure the proper execution of recipes. ◦ We expect reaching a conclusion on which metric could be good to use to add this level of intelligence to SandS.

7. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE Sources of interference  Description ◦ As an added layer of complexity to the tests, we need to create a series of parallel sources of interference to be used mostly on tests 2 and 3.  Main need for the experiment ◦ There are devices that emit noise in the band where the communication happens, mainly microwave ovens and induction plates. ◦ There are other WSN, like e.g. a Bluetooth classic network transmitting audio. ◦ There are other systems like mobile phones that could have undesired effects on the communication. ◦ There are devices that compete in the use of the bandwidth like e.g. a computer browsing the internet that could affect the proper functioning of the communication between the DI and the appliances.  Expected outcome ◦ We expect seeing the WiFi throughput degrade as we add different sources of interference

8. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE Forthcoming deliverables  D8.2 – CREW Experiment report ◦ In this deliverable we will highlight the results of the tests where we expect seeing whether the metrics offered by the CREW facilities can be used as a way to add an extra layer of safety to SandS. ◦ The deliverable should include diagrams of the tests as well as graphs showing the behaviors of the different metrics when increasing the amount of connected appliances. ◦ A second round of tests will include the existence of interferences polluting the communication. ◦ We want to be able of providing a series of recommendations to potentially redesign SandS' wireless communication at a low level adding some sort of cognitive network strategy.

9. SOCIAL HOUSEKEEPING THROUGH INTERCOMMUNICATING APPLIANCES AND SHARED RECIPES MERGING IN A PERVASIVE WEB-SERVICES INFRASTRUCTURE