I would watch out with speed comparisons. as the results will be quite
mixed due to a number of factors.
coverage will be one thing.
the air-interface technology will be another thing,
optimisation of this air-interface (GSM, CDMA)is yet another thing, I am
referring to GPRS for this one.
and the optimised TCP/IP is another thing.
The vendors and operators might promise 20- 30 kbits... but dont see
this as the rate you are going to get. most of the TCP implementation
are for land-based networks and behave pretty badly on wireless interfaces.
So as the air-interface might actually get you 20-30-40 whatever kbits/s
(depending on the network, type of mobile, loading of the network,
subscription paramters, etc.), the tcp/ip stack will screw this up
luckily some vendors and startups are coming up with optimised stacks...
ps. another thing..
up to my knowledge applets and so only have access to the IP layer. that
actual speeds comes from the air interface. and ping is nearly
impossible to implement with an applet.
Mike Derouin wrote:
>I find this very interesting, as I have recently been tasked with a
>report on this type of global comparison. I would be happy to share my
>findings with anyone listed, and hope more people will come forward with
>Has anyone seen any speed comparisons? Particularly unbiased tests of
>speed? Are there any applets/software that will test speeds, and work
>on Internation phones?
>>From: keitai-l_at_appelsiini.net [mailto:keitai-l_at_appelsiini.net]
>>Sent: January 30, 2002 7:48 AM
>>Subject: (keitai-l) Re: per-packet pricing in U.S.
>>>carrier quantity price price/KB over
>>>------- -------- ----- --------
>>>VoiceStream 1 MB $2.99/mo $.0029
>>>Cingular .5 MB $14.99/mo $.029
>>>Docomo ? ? $.0185 (*) ? ?
>>Sonera (FI) 1MB $7.07/mo $.0069 $2.83/MB
>>Sonera (FI) 10MB $21.22/mo $.0021 $2.12/MB
>>Radiolinja (FI) 0MB $5.66/mo - $.0036/KB
>>DNA(FI) n/a $19.30/mo - -
>>The GPRS fee gets you connected to the Internet and it's
>>really up to you if you use the GPRS service for Internet
>>access from your laptop or PDA, or if you're browsing web or
>>WAP pages with your phone.
>>These are typically additional costs to the basic fees, SMS
>>messages at the usual $0.2/message or less. Example basic
>>fee for Sonera Classic Duo
>>(GSM800&1900) $4.06/month, calls $0.186 - 0.278/minute.
>>The public profile for these three operators is that Sonera
>>is expensive, reliable and up-to-date, Radiolinja is cheaper
>>but less reliable and slower to introduce new things, and DNA
>>is a new player trying to break the traditional rules.
>>This mail was sent to address mderouin_at_mmhouse.com
>>Need archives? How to unsubscribe?
>This mail was sent to address wimjam_at_gmx.co.uk
>Need archives? How to unsubscribe? http://www.appelsiini.net/keitai-l/
Received on Thu Jan 31 16:45:18 2002