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15 de novembre 2013
WICOMTEC reducing the carbon footprint in the Telecom sector
WIRELESS COMMUNICATION AND TECHNOLOGY
www.upc.edu
6 full time permanent staff (PhD) 2 research assistants 10 PhD students (Carleton, KTH,Aalborg) 2 visitant PhD students (Aalto, Monterrey) 4 MSc students
www.upc.edu
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SMART CITIES: We go from TECHNOLOGY and PLANNING
WICOMTEC
HetNets…..
Bluetooth WLAN GPRS Zigbee UMTS LTE WSN RFID WiMAX
Subtítol
www.upc.edu
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To APPLICATIONS to solve real problems
Health, transport..
WICOMTEC
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Wireless technologies have become an essential means of
communicactions in our daily social and business activities.
The World of WirelessConnected to
the WORLD!Wireless networks have been widely deployed worldwide by telecommunications operators to provide mobile users with continuous mobile services.
greenet
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Wireless technologies, like 3G, 2G, Wi-Fi and Bluetooth, and Apps,
like Skype and YouTube, quickly
deplete the batteries of Smart Phones.
The Footprint of WirelessConnected to the
POWER GRID!Wireless networks are continuously operating worldwide and are responsible for growing energy consumption and carbon emissions that should be kept to a minimum.
CO2CO2
CO2
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Alice, Bob, Carol, and Dave will explain us how Greenet works…
Alice Bob Carol Dave
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Bob
Carol
Alice
Dave
Cooperative NetworksCooperation means to work together to achieve a common aim. In the context of green wireless communications, mobile devices cooperate by transporting the information of each other via short-range wireless communications to reduce the energy consumption caused by long-distance wireless communications.
Bob's tablet cuts the 4G link and relays Bob’s information through Carol’s and Alice’s smart phones by using Wi-Fi links to save energy.
Long-distance 4G links are very energy consuming for
mobile devices.
Multi-hop cooperative Wi-
Fi network
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Vertical Handover
Bob
Carol
Alice
Cognitive NetworksCognition refers to the ability to learn from the environment and, based on it, take a decision to achieve a specific goal. In the context of green wireless communications, cognitive mobile devices should scan the available wireless networks and connect to the most energy-efficient in order to prolong the battery life while satisfying the quality of service.
4G networks consume significant energy from
mobile devices.
Wi-Fi networks consume low energy from mobile devices.
Dave
Carol is approaching a Wi-Fi network and her smart phone decides to
switch from the 4G network to the Wi-Fi network to save energy.
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Network CodingCoding means to combine several things in one. In the context of green wireless communications, mobile devices intelligently mix the information of each other to reduce the amount of transported information and the corresponding energy consumption.
Alice
Carol
Bob
Alice and Bob want to share their images using Wi-Fi but their smart phones cannot communicate directly.
3Alice’s and Bob’s
smart phones share their images through Carol’s smart phone,
which combines them in one to save energy. They get the
imagines by using both own and
combined images.
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Bob
CarolAlice
Dave
Spatial ModulationSpatial Modulation means to split things into pieces and send them through different paths. In the context of green wireless communications, mobile devices are able to transmit and receive information through multiple antennas by just powering one, and not all of them, at each time instant.
Alice and Carol want to share two pictures with Bob. Their smart phones send them to Bob’s tablet through different antennas that are
activated one by one to save energy. Finally, Bob receives the two pictures in his tablet.
antenna 2antenna 1
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Bob
Carol
Alice
Dave
‘Eco’ Networks‘Eco’ means to be friendly with the environment. In the context of green wireless communications, mobile devices, Wi-Fi routers, and mobile antenna systems (aka base stations) sleep by turning off their radio components to save energy when nobody is using them, usually during the night.
Wi-Fi router
Wi-Fi router
4G antennas
Alice, Bob, and Carol go to sleep. Their smart phones and Wi-Fi routers detect no activity and turn off their radios to save energy. 4G antennas are switched off as nobody is calling
or browsing through the Internet.
Example: cell switch-off in dense networks
www.upc.edu
• Determining the largest set of cells that can be switched-off while guaranteeing desired QoS
• Transitions on-off should be done gradually • Real-time complexity (heterogeneous, non-uniform, traffic, users, handover, ....)
Patent with Huawei and Carleton Univ.
