[maemo-users] OS2008 on n800 - Nice Job

From: Acadia Secure Networks acadiasecurenets at aol.com
Date: Sun Dec 9 20:09:47 EET 2007

I expect that Nokia has filed lots of patents regarding its battery and 
power management intellectual property.

Software engineers by and large  tend to take the availability of 
electrons for granted but those electrons have to come from somewhere in 
order to get the software "work" done. When I speak to others about the 
Internet Tablet product family I always make a point to mention the 
power conserving knowhow that has gone into the design, even before this 
last round of improvements. My Windows Mobile handset is not really as 
useful as it could be as a PDA because the battery life is so short (~30 
minutes) or so when I attempt to use it for email or for accessing the www.

What I really would like to have from Verizon Wireless (or another 
mobile service provider)  is a device with the following characteristics:

        *  Function:                EVDO modem with bluetooth for
          tethering to the N800
        *  Battery Capacity: 10-12 hours of continuous use (i.e. where
          the modem is turned on and "dialed in" to the Verizon Wireless
          EVDO network) between recharging.
        *  Form Factor:         fits in a shirt/coat pocket or belt clip
        *  Weight:                  10 oz  or less (this is the weight
          of the UTStarcom XV6700)

Now that Verizon Wireless has taken the defensive measure of following 
Google's lead in agreeing to "open" its mobile network to non-Verizon 
Wireless supplied devices that "meet spec", I could foresee a company 
developing such a product. Such a product could be a good way for Nokia, 
for example,  to get a share of the mobile device market from the CDMA 
based mobile providers in the U.S., (Sprint, Verizon Wireless, and 
Alltell) prior to the evolution to  of those service providers to LTE.

I am hopeful that as WIMAX gets deployed in the U.S. in the 2.4 ghz band 
and, perhaps, eventually in the 700 mhz band, it will be more device 
friendly in terms of battery power consumption than EVDO and HSDPA.

Best Regards,


John Holmblad


Acadia Secure Networks, LLC

* *

Michael Wetherell wrote:
> On Wednesday 28 November 2007 08:55, Eero Tamminen wrote:
>> The main reason why OS2008 is faster than OS2007 is that kernel now
>> supports Dynamic Voltage Frequency Scaling (DVFS).  When only CPU is
>> used, the frequency can be higher than in OS2007, when also DSP is
>> used, it needs to be dropped to earlier speed (which transition was a
>> real pain to get fast and reliable enough).  When neither is needed,
>> frequency can be dropped even lower which improves battery usage.
> Seems like really good work, the tablet is transformed. Congrats to all 
> involved.
> Regards,
> Mike
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