![\"iot4d\"](\"https:\/\/lirima.inria.fr\/files\/2016\/02\/iot4d-150x150.jpg\")
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em>\u00a0The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT<\/h5>\nPrincipal Investigators <\/strong>:<\/span>
\n<\/span>Thomas Ndi\u00e9 Djioto<\/strong>, ENSP\/University of Yaounde I, Cameroon ;
\nEmmanuel Nataf<\/strong>, Inria Nancy-Grand Est, Inria associate-team MADYNES<\/h5>\nResearch objectives\u00a0<\/strong><\/span>:
\n<\/span>Foster Internet of Things research in the context of developing countries (DCs)<\/h5>\nScientific achievements\u00a0<\/strong>:<\/span>
\n<\/span>Implementation of fuzzy logic processing inside the Contiki OS<\/span><\/h5>\nPublications :<\/span>
\n<\/strong><\/span>
\n<\/strong><\/span>– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Energy-Based Metric for the Routing Protocol in Low power and lossy network”, In proceeding of SENSORNETS, Barcelone, Feb 2013.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Fuzzy-based routing metrics combination for RPL”, Doctoral Colloquium SENSORNETS, Lisboa, Jan 2014.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, “On Design and Deployment of Fuzzy-based Metric for Routing in Low-Power and Lossy Networks”, IEEE SenseApp 2015, Clearwater-Beach, USA, Oct 2015.<\/h5>\nMore about IoT4D<\/strong>:<\/span>\u00a0<\/span>http:\/\/www.inria.fr\/en\/associate-team\/iot4d<\/u><\/strong><\/h5>\n\n- \n
Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\nIn the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\nInternet of Things in the African context<\/span><\/strong><\/h5>\nInternet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nIoT gateway<\/span><\/strong><\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n![\"Raspberry](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Raspberry-Pi-for-the-gateway-300x182.png\")
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\n![\"Sky](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Sky-motes-for-sensors-300x205.png\")
Sky motes for sensors<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nWe extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n![\"Test](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Test-deployment-300x197.png\")
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n![\"Multiple](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Management-300x184.png\")
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nThe right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\nIn the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n![\"Second](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Second-test-300x180.png\")
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\n![\"multiple-networks-management\"](\"https:\/\/lirima.inria.fr\/files\/2016\/10\/Multiple-networks-management-300x159.png\")
Multiple networks management<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nFuture work<\/strong><\/h5>\nWe can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n
Our work in the IoT4D associated team is to create research activities around IoT<\/h5>\nPrincipal Investigators <\/strong>:<\/span>
\n<\/span>Thomas Ndi\u00e9 Djioto<\/strong>, ENSP\/University of Yaounde I, Cameroon ;
\nEmmanuel Nataf<\/strong>, Inria Nancy-Grand Est, Inria associate-team MADYNES<\/h5>\nResearch objectives\u00a0<\/strong><\/span>:
\n<\/span>Foster Internet of Things research in the context of developing countries (DCs)<\/h5>\nScientific achievements\u00a0<\/strong>:<\/span>
\n<\/span>Implementation of fuzzy logic processing inside the Contiki OS<\/span><\/h5>\nPublications :<\/span>
\n<\/strong><\/span>
\n<\/strong><\/span>– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Energy-Based Metric for the Routing Protocol in Low power and lossy network”, In proceeding of SENSORNETS, Barcelone, Feb 2013.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Fuzzy-based routing metrics combination for RPL”, Doctoral Colloquium SENSORNETS, Lisboa, Jan 2014.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, “On Design and Deployment of Fuzzy-based Metric for Routing in Low-Power and Lossy Networks”, IEEE SenseApp 2015, Clearwater-Beach, USA, Oct 2015.<\/h5>\nMore about IoT4D<\/strong>:<\/span>\u00a0<\/span>http:\/\/www.inria.fr\/en\/associate-team\/iot4d<\/u><\/strong><\/h5>\n\n- \n
Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\nIn the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\nInternet of Things in the African context<\/span><\/strong><\/h5>\nInternet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nIoT gateway<\/span><\/strong><\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\nSky motes for sensors<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nWe extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nThe right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\nIn the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\nMultiple networks management<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nFuture work<\/strong><\/h5>\nWe can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n
\n<\/span>Thomas Ndi\u00e9 Djioto<\/strong>, ENSP\/University of Yaounde I, Cameroon ;
\nEmmanuel Nataf<\/strong>, Inria Nancy-Grand Est, Inria associate-team MADYNES<\/h5>\n
Research objectives\u00a0<\/strong><\/span>:
\n<\/span>Foster Internet of Things research in the context of developing countries (DCs)<\/h5>\nScientific achievements\u00a0<\/strong>:<\/span>
\n<\/span>Implementation of fuzzy logic processing inside the Contiki OS<\/span><\/h5>\nPublications :<\/span>
\n<\/strong><\/span>
\n<\/strong><\/span>– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Energy-Based Metric for the Routing Protocol in Low power and lossy network”, In proceeding of SENSORNETS, Barcelone, Feb 2013.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Fuzzy-based routing metrics combination for RPL”, Doctoral Colloquium SENSORNETS, Lisboa, Jan 2014.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, “On Design and Deployment of Fuzzy-based Metric for Routing in Low-Power and Lossy Networks”, IEEE SenseApp 2015, Clearwater-Beach, USA, Oct 2015.<\/h5>\nMore about IoT4D<\/strong>:<\/span>\u00a0<\/span>http:\/\/www.inria.fr\/en\/associate-team\/iot4d<\/u><\/strong><\/h5>\n\n- \n
Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\nIn the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\nInternet of Things in the African context<\/span><\/strong><\/h5>\nInternet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nIoT gateway<\/span><\/strong><\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\nSky motes for sensors<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nWe extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nThe right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\nIn the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\nMultiple networks management<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nFuture work<\/strong><\/h5>\nWe can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n
\n<\/span>Implementation of fuzzy logic processing inside the Contiki OS<\/span><\/h5>\n
Publications :<\/span>
\n<\/strong><\/span>
\n<\/strong><\/span>– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Energy-Based Metric for the Routing Protocol in Low power and lossy network”, In proceeding of SENSORNETS, Barcelone, Feb 2013.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, O.Festor, “Fuzzy-based routing metrics combination for RPL”, Doctoral Colloquium SENSORNETS, Lisboa, Jan 2014.<\/h5>\n– P.O.Kamgueu, E.Nataf, T.Djotio, “On Design and Deployment of Fuzzy-based Metric for Routing in Low-Power and Lossy Networks”, IEEE SenseApp 2015, Clearwater-Beach, USA, Oct 2015.<\/h5>\nMore about IoT4D<\/strong>:<\/span>\u00a0<\/span>http:\/\/www.inria.fr\/en\/associate-team\/iot4d<\/u><\/strong><\/h5>\n\n- \n
Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\nIn the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\nInternet of Things in the African context<\/span><\/strong><\/h5>\nInternet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nIoT gateway<\/span><\/strong><\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\nSky motes for sensors<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nWe extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nThe right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\nIn the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\nMultiple networks management<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nFuture work<\/strong><\/h5>\nWe can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n
– P.O.Kamgueu, E.Nataf, T.Djotio, “On Design and Deployment of Fuzzy-based Metric for Routing in Low-Power and Lossy Networks”, IEEE SenseApp 2015, Clearwater-Beach, USA, Oct 2015.<\/h5>\nMore about IoT4D<\/strong>:<\/span>\u00a0<\/span>http:\/\/www.inria.fr\/en\/associate-team\/iot4d<\/u><\/strong><\/h5>\n\n- \n
Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\nIn the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\nInternet of Things in the African context<\/span><\/strong><\/h5>\nInternet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\nLike developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\nNevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\nIoT gateway<\/span><\/strong><\/h5>\nOur work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\nSky motes for sensors<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nWe extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nThe right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\nIn the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\nMultiple networks management<\/strong><\/p><\/div>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\n<\/h5>\nFuture work<\/strong><\/h5>\nWe can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n
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Visit report of Emmanuel Nataf at the University of Yaounde 1, Cameroon \u2013 22 to 30 of August 2016<\/strong><\/span><\/h5>\n<\/li>\n<\/ul>\n
In the context of the LIRIMA associated team, the Inria team leader Emmanuel Nataf was invited at the University of Yaounde 1 by the team leader Thomas Djotio, from the 22 to 30 of August 2016. During a full week, Emmanuel worked with Patrick Olivier Kamgueu on the first steps towards a real deployment of a backbone network dedicated to connect several wireless sensors networks to the Internet. This collaborating work is defined as a final part of the PhD of Patrick Olivier that started since November 2012. This PhD thesis is co-supervised by Thomas Djotio and Maurice Tchuent\u00e9 from the University of Yaounde 1,and by Olivier Festor and Emmanuel Nataf from Inria.<\/h5>\n
Internet of Things in the African context<\/span><\/strong><\/h5>\n
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention a simple example, the IoT will allow a better monitoring of the world safety, limit the loss of natural resources, provide helpful smart objects to users within health or financial services, etc.<\/h5>\n
Like developed countries, developing countries (DCs) like some African countries should own and control all the processes of such technologies of which we just mentioned advantages above. One of the challenges consists of deploying IoT-based technologies and easing its human usages. The challenges are naturally more significant in DCs due to the weaknesses or the lack of modern infrastructure.<\/h5>\n
Nevertheless, IoT has some properties that made it a good evolving path.<\/em> The first is that smart objects are becoming increasingly numerous and varied, they become cheaper as well. The second is the use of wireless communication that allows an easy deployment in a city, building, factory, etc.<\/h5>\n
IoT gateway<\/span><\/strong><\/h5>\n
Our work in the IoT4D associated team is to create research activities around IoT. During this week we have shared our knowledge on a software prototype that we are jointly developing. This one is a communication gateway between Internet and one or more wireless sensors networks. It allows the monitoring of each network stability from a single web interface. The same interface is also used to create new sensors networks and to gather data that are sent from our sensors (temperature, humidity…). We use cheap hardware which are able to work well in the legacy environment of the ENSP (Ecole Nationale Sup\u00e9rieure Polytechnique) of Yaounde, where we made our deployment tested.<\/h5>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Raspberry Pi for the gateway<\/strong><\/p><\/div>\n
Sky motes for sensors<\/strong><\/p><\/div>\n
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We extend an existing research software from the CETIC laboratory to develop our IoT framework. Below is a first simple test of a wireless sensor network made of three nodes, connected to the raspberry based gateway through a supplementary node that relays wireless communication.<\/h5>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Test deployment<\/strong><\/p><\/div>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0\u00a0Management GUI<\/strong><\/p><\/div>\n
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The right part shows the graphical web interface we used to monitor and manage the network. Arrows model the IPv6 routing plane that sensors have established with the standardized RPL routing protocol<\/em>. Our first step of extension is to allow a single gateway to manage several wireless sensors networks<\/h5>\n
In the second test, we added three nodes (Z1 and Re-Mote from Zolertia) around the first network. Our management interface was able to separately manage each network, as one can see the second sensors graph on the web interface.<\/h5>\n
\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Second test<\/strong><\/p><\/div>\n
Multiple networks management<\/strong><\/p><\/div>\n
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Future work<\/strong><\/h5>\n
We can now deploy several gateways that will manage several networks. We are working on the synchronization of these gateways to provide a global view of each network wherever they are deployed. A linear programming approach will be used to optimize two opposite constraints. The first is that sensor networks will use the maximum number of gateways and the second is that each gateway should accept a maximum number of networks, but gateways have not infinite resource. The trade of is between sensor network needs of gateways to ensure a good Internet connection and the limited number of gateways.<\/h5>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Internet of Things (IoT) largely contributes to the Internet technology evolution and its usage. Our world is constantly growing in complexity as well as urban population, that are and become more and more dependent on the Internet. Just to mention\u2026<\/p>\n