J
JL
Hi,
What are advantages and drawbacks about these protocols ?
How to choose between them ?
JLD
What are advantages and drawbacks about these protocols ?
How to choose between them ?
JLD
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Paul G. Tobey [eMVP]
WiFi is a short-range (relatively; not as short as bluetooth, of course),
network. GPRS is essentially a phone connection. The choice between them
should be obvious based on how the device will be used. If you're within
300m of a base station, WiFi is faster. If not, it's not an option.
Paul T.
network. GPRS is essentially a phone connection. The choice between them
should be obvious based on how the device will be used. If you're within
300m of a base station, WiFi is faster. If not, it's not an option.
Paul T.
J
JL
Thanks Paul.
So, to choose between GPRS and wifi, i need to know :
- the speed of the connection which is waited by the users
of smart device application.
- Do they work more than 300m of the base ?
....
What about setup connection, security ..?
Thanks,
JL
So, to choose between GPRS and wifi, i need to know :
- the speed of the connection which is waited by the users
of smart device application.
- Do they work more than 300m of the base ?
....
What about setup connection, security ..?
Thanks,
JL
P
Paul G. Tobey [eMVP]
Basically, yes. It's usually dead obvious which to choose. I mean, you'd
*never* use 802.11 in cases where you want to communicate from an
over-the-road truck, but you'd almost never choose GPRS for communication
inside your office...
Since GPRS is a point-to-point connection, it should be relatively secure
from drive-by snooping, although I wouldn't assume that the US government
can't read it via satellite, if they want to. 802.11 is relatively easy to
tap into from a vehicle driving within the previously-mentioned distance.
It has the ability, although not the necessity, to use WEP to encrypt the
data, though, which is somewhat effective at hiding the data, depending on
the how long a key is chosen. Of course, you could also encrypt *all* of
the data that you send, if you want to, over either type of connection.
802.11 security *has* to be one of the top-100 most-discussed topics in
technical magazines. You should probably just read-up on it a bit. Not
sure where to read-up on GPRS security, but you can probably look around a
bit.
Paul T.
*never* use 802.11 in cases where you want to communicate from an
over-the-road truck, but you'd almost never choose GPRS for communication
inside your office...
Since GPRS is a point-to-point connection, it should be relatively secure
from drive-by snooping, although I wouldn't assume that the US government
can't read it via satellite, if they want to. 802.11 is relatively easy to
tap into from a vehicle driving within the previously-mentioned distance.
It has the ability, although not the necessity, to use WEP to encrypt the
data, though, which is somewhat effective at hiding the data, depending on
the how long a key is chosen. Of course, you could also encrypt *all* of
the data that you send, if you want to, over either type of connection.
802.11 security *has* to be one of the top-100 most-discussed topics in
technical magazines. You should probably just read-up on it a bit. Not
sure where to read-up on GPRS security, but you can probably look around a
bit.
Paul T.
C
Chris J.T. Auld [MVP]
- the speed of the connection which is waited by the users
WiFi will spank the pants of GPRS everytime.
With direct line of sight, maybe depending on hardware.
You can of course set up multiple base stations.
Setup Connection? As in time to establish connection on request?
WiFi will be faster than GPRS.
As far as setting up your own WiFi network?
If it is a large install I would get a specialist WiFi company in to setup
for you.
WiFi Security- beyond the scope of this answer, but, it's not too bad off
the PPC looking forward 2-3 months as 802.1x support is starting to trickle
in
http://www.cewindows.net/faqs/802.1x.htm
http://www.windowsfordevices.com/news/NS6901677291.html
GPRS Security
GPRS runs over GSM. So all the security you get from GSM you also get on
GPRS
http://www.windowsfordevices.com/news/NS6901677291.html
in short. Each call session will be encrypted in 64bits with a new key
generated at session handshake time (or more often if the provider network
permits it)
Cheers
Chris
-------------------------------------------
Kognition Consulting Limited - Thought Meets Technology
Chris J.T. Auld - Managing Director
Microsoft MVP (Windows Mobile Devices)
Phone: +64 3 453 0064
Mobile: +64 21 500 239
Email: (e-mail address removed)
of smart device application.
WiFi will spank the pants of GPRS everytime.
- Do they work more than 300m of the base ?
With direct line of sight, maybe depending on hardware.
You can of course set up multiple base stations.
What about setup connection, security ..?
Setup Connection? As in time to establish connection on request?
WiFi will be faster than GPRS.
As far as setting up your own WiFi network?
If it is a large install I would get a specialist WiFi company in to setup
for you.
WiFi Security- beyond the scope of this answer, but, it's not too bad off
the PPC looking forward 2-3 months as 802.1x support is starting to trickle
in
http://www.cewindows.net/faqs/802.1x.htm
http://www.windowsfordevices.com/news/NS6901677291.html
GPRS Security
GPRS runs over GSM. So all the security you get from GSM you also get on
GPRS
http://www.windowsfordevices.com/news/NS6901677291.html
in short. Each call session will be encrypted in 64bits with a new key
generated at session handshake time (or more often if the provider network
permits it)
Cheers
Chris
-------------------------------------------
Kognition Consulting Limited - Thought Meets Technology
Chris J.T. Auld - Managing Director
Microsoft MVP (Windows Mobile Devices)
Phone: +64 3 453 0064
Mobile: +64 21 500 239
Email: (e-mail address removed)