Janne Ofversten, day1 (battery and so on), nokia seminar
nokia trends
- cloud computing
- context awareness
- augmented reality
- N97 without activity – 5mA, 300 hours
- N97 with activity 6 background apps – 55mA, 27 hours
- battery capacity increses 5-10% annualy
- battery is the biggest component in the device
- they optimize number of network accesses and amount of transferred data. (could we consider an optimization by using several kinds of networks)
consumers
- cpu, display, wireless
- software optimization decreases power consumption too
- active pixels consumes a lot
- opt: draw something if it is actually seen by user
- efficiency of network edpends on conditions: NW strengh, broadcast
- growing netw applications, like keep alive tcp - there are places for doing somethig
- connected applications is the biggest challenge
- tradeoff signalig: availability vs energy
QA
- Energy profiler works only on Symbian;
- They are considering to support EP on MAEMO;