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08/08/09
08/08/09
THIS is the hell of Symbian in 2009. I think you guys ought to write it up. Once you look into it, I think you'll find it makes Apple's trouble with the App Store look pretty tame (and let's not even begin to get into Ovi. UGH!)
Cheers, and keep up the good work!
08/07/09
- Some variant of open IP connection or what is called "PDP Context" in telecom lingo
- SMS
That's it, there is literally no other ways to do it.
You can of course trigger something else with the SMS, like downloading an MMS for example. Or downloading an email, or whatever you want.
SMS messages are delivered through a narrow band control channel that the phone needs to have in order to stay attached to the network.
On an open IP connection you can use a standard like IMAP Idle or invent something of your own like Active Sync. The downside with an open IP connection is that it increases current consumption significantly. This is because it needs to tell the network to keep the "PDP Context" open.
SMS Push is superior in every way compared to any open IP connection. The only drawback is that you have to be an operator to use it otherwise it gets really expensive.
08/06/09
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08/06/09
Nah but seriously thanks. I still say Microsoft FTW! ^_^ Apple's push sounds more like a baby's push compared to the complex and secure RIM's push and then it seems more efficient than Microsoft's way (energy wise)
08/06/09
08/06/09
Right now without that connection to some kind of network (data, voice, cellular, whatever) push isn't possible because there would be no way for the push service to know where to push it to.
08/06/09
the only power being burned is that the phone has to occasionally let the cellular network know where it is in order for the cellular network to know how to route data to it. that expenditure cannot be avoided for any mobile device.
also, IP is a routing protocol, not a connection protocol. to have a reliable connection for delivering data, you need another protocol running on top of IP (nominally TCP these days). and both at already being used to send data to and from your cell phone, so you don't need to wait.
4G is about the link and physical layers of the network stack and is independent of the network and transport layers. they just provide faster bit rates and/or latency changes, without affecting the connectivity running on top of it.
08/06/09
08/06/09
@aquajaws: Yes, I know that SMS/MMS use data connection, and even in some phone they have setting to send SMS using gprs connection. But it's a lot more efficient in terms of power consumption compared to push email which need your data connection stay connected.
And you do know that the phone need to 'dial' for data connection to connect, but voice and SMS/MMS is always on. I'm no expert on this stuff, but it seems that an all IP system like in 4G would make data connection to the internet more seamless than using 3G and probably can save some power in the process. Probably someone who is an expert in this stuff can enlighten me?
08/07/09
the implementation of push support on the network is probably suboptimal at the moment, but could be fixed in software without changing cellular protocols (basically, it sounds like they're doing the push updates separate from the normal connection sync packets, which really isn't strictly necessary. most likely, service providers are dragging their feet implementing proper support in their networks)
the positive side of the current push implementation is that it allows you to switch from cellular to wifi networks relatively seamlessly. if the push notifications were strictly tied to the cellular protocol, you wouldn't be able to do that. although that's really mostly an advantage for the cellular service providers and not the end users since it just takes the load off their data networks.
08/06/09
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08/07/09
I mean, that's still not exactly the point. But I think he's referring to the app being open as opposed to the platform being open.
I...don't really get it either, though.
08/06/09
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08/06/09
Push email from an Exchange server onto an iPhone works great. Then, the IT Guy bollixed something with the networked document scanner so that now, I get an email notification of every document scanned. According to the IT Guy, I must have somehow altered a subscription that I don't have the ability to alter.
Consultants are great. There's no money in fixing the problem but you can make a fortune if you prolong it.
08/06/09
Push Harder!
Push Faster!
Push Longer!
08/06/09
Push Better!
Push Stronger!
08/06/09