Perspectives de gestion de la consommation énergétique dans le réseau domestique

François Baron, THOMSON.Francois.baron@thomson .net Brest, 26 mars 2009

Home Network Power consumption

� Home Network equipments

� Communication technologies

� Power consumption

� Rules, standards, labels

� Some use cases

Home Network equipments

GateWay

NAS

Photo MapMain TV

DVD/ Bluray

STB

Desktop PCLaptop PCGaming consolePS3/Xbox/Wii

Room TV

Communication technologies

� Communication technologies– WiFi

� Wireless, 54…300Mbps (� 1Gbps for .11ac)

– Ethernet� Needs house wiring, 100Mbps…1Gbps

– CPL� No new wire; up to 50-60Mbps

– POF� Needs home wiring, up to 1Gbps

– Bluetooth� Wireless, 1Mbps (� 100Mbps for BT3.0)

– ZigBee� Wireless; 250kbps; suited for home automation

– …

Power Consumption : Rules, Standards, Labels

� EU Mandatory regulations� “ EuP” Directive 2005/32/EC on eco-design requirements for Energy-Using Product s:

� (Lot7) EPS: regulated, mandatory expected Mar. 2010 - all EuPs, (η>87%)� (Lot6) Standby and Off-mode: regulated, mandatory Jan. 2010 - all EuPs, (Poff<1W…0.5W)� (Lot15) Simple STB: regulated, mandatory Mar. 2010 - (Pstby<1W..0.5W, power-down t<3hrs)� Next step :

– (Lot18) Complex STBs – regulation to be issued in 2010 (effects 2011?) – Broadband equipment (ADSL modems…) considered for future work– Networked Standby, Broadband… other environmental impacts, waste, product end of life

� EU Volontary agreements : Codes of Conduct� Yearly volontary agreements� Using a philosophy of Best Current Practice� DTV, STB CoC :

– V7 now (Watt limits) : base power + options– V8 in preparation for [2010-2012+] : 50-60kWh limits + options, auto stby < 4hrs

� Broadband Products CoC : – V3 for [2009-2011] (Watt limits,)– Assumes HW switch to lowest possible power consumption mode.

Power Consumption : Rules, Standards, Labels

� Energy Star�Label for US products �Using Total Energy Consumption (TEC) method of specification

(specified in kWh/year rather than Watts).– Based on usage scenarios with a percentage of time spent in various

modes (e.g., 2hrs recording (while watching), 5 hrs watching, 19 hrs idle….).

�Effective date : Sept 2009.

� CEA Energy Efficiency Working Group (EEWG)�CEA has produced two energy related STB standards

– CEA-2013-A (Digital STB Background Power Consumption)– CEA-2022 (Digital STB Active Power Consumption Measurement)

Power Consumption : some figures

GateWay 15-20W /9W

NAS Basic 14W / 10WRAID5 45W / 40W

Photo Map5-20 W

Main TV – 30W – 200W / down to 1 W

DVD/ Bluray 25-30W / 3W

STB 20 W / 8W down to 2W

Desktop PC 130-700 WLaptop PC 10-30 W

Gaming consolePS3/Xbox 200 W Wii 20W

Networking Power

Ethernet : 1.5W/node

PLC : 5W/node

WiFi : 1.2W/node

POF : 1.5W/node

ZigBee : 5mW/node

Use case : one evening…

GateWay 15-20W /9W

NAS Basic 14W / 10WRAID5 45W / 40W

Main TV – 30W – 200W / down to 1 W

DVD/ Bluray 25-30W / 3W

STB 20 W / 8W down to 2W

Desktop PC 130-700 WLaptop PC 10-30 W

Play recorded film on TVWatching TV

Kid 1 go to bedroom and playDad use PC to download a film for tomorrow

Gaming consolePS3/Xbox 200 W Wii 20W

Kid 2 works on laptop with desktop and internetDad’ go back to see the filmMom’ go browsing on internetKid 1 stop playing and watch filmGo to sleep (still downloading…)

Conclusion

� Home Network…� Heterogeneous� Complex

� Power Consuming

� Devices not used continuously (can be turned off)

� Usage …� Good knowledge on the network and turn on/off device when needed :

complicated� Keep (nearly) all devices turned on : power consuming

� Automatically turn on/off device depending on the need– UPnP low power ?

– Low power Overlay network for remote on/off (ZigBee, LAN, PLC…)?– …