> A very thorough analysis, thanks. In that light, how do we explain the
> following:
>
> my phone is 'off' the network (the i is not blinking)
> someone sends me an email and immediately my phone connects (i starts
> blinking) and the mail is delivered.
>
> Exactly how is the handset getting notified of the incoming mail if it's
> not yet on the network?
The mobile is connected to the network, but only transiently at the signalling
layer. I dont know about Japan keitai's, but GSM phones occasionally transmit to
the network just to say 'im here! helllloooo' so that the network knows in which
Cell the mobile is located so it may be contacted for incoming calls. Text
messages & e-mail are transmitted to the mobile, even though your mobile may
appear idle it is always listening and sometimes talking to the network.
i'd agree with the subject line, is iMode really 'always on'? i dont think so.
when i hit the iMode button it takes a few seconds while the little keitai
connects to the network, before it starts downloading pages. I guess that just
like a circuit switched voice call, the mobile network still has to go through
some initialization to allocate air resources so the mobile can start
transmitting/receiving iMode packets...??
>
>
> I am confused.
>
> r e n
>
> > To verify please do the following experiment.
> >
> > Check the i-icon on your phone. If not connected to the i-mode network
> > (connection OFF, but able to connect to i-mode packet switched network),
> > the i-icon is not blinking. When you connect to the i-mode network, it
> > takes, depending on the time of the day, between 1 second (early in the
> > morning) and 5 seconds (around 11pm). Once the connection is established,
> > the i-icon is blinking meaning the connection is ON. If no traffic is send
> > or received for a period of 3-4 minutes, the connection is automatically
> > finished and the i-icon stops blinking. The connection is OFF.
> >
> > Based on the network architecture as published last year in Nikkei
> > Communications and this experiment, i-mode makes use of a hybrid solution,
> > circuit switched until the M-SCP component in the network and
> > packet-switched (called the PCD-P network) higher up in the network.
> >
> > Arjen van Blokland
> > arjen@fra.allnet.ne.jp
> >
> > [ Did you check the archives? http://www.appelsiini.net/keitai-l/ ]
>
> --
> ascii: r e n f i e l d
> octal: \162 \145 \156 \146 \151 \145 \154 \144
> hex: \x72 \x65 \x6e \x66 \x69 \x65 \x6c \x64
> e-business technology | engineering & strategy | wireless
>
> [ Did you check the archives? http://www.appelsiini.net/keitai-l/ ]
[ Did you check the archives? http://www.appelsiini.net/keitai-l/ ]
Received on Tue Jan 23 08:08:00 2001