BobY777
12-26-2004, 08:38 AM
I'm more acclimated to the WiFi rf part of things. So I'm not familiar with how WISPs deliver the broadband to a customer that might want broadband.
I use to think a WISP might have a tower on top of a tall hill on 2.4 GHz, and then shoot the signal to clients below the hill. And then it might be bridged into the customers building to a demarcation point, via a wireless bridge.
I guess this signal from hill to customer can be on 2.4 GHz or 5.8 GHz...FHSS or DSSS? I heard that most WISPs are using DSSS?
As long as there is a broadband demarcation point for the customer, I guess it doesn't matter if it was delivered via 2.4 G or 5.8 G ?
Are many WISPs going with 5.8 G due to congestion on 2.4 G? Seems that 5.8 G will probably be congested soon also?
Seems to me that since 2.4 G is used by so many people in a single locality with access points, that there can be a very big chance of interference to a WISP who wants to use 2.4 G? After all there are only three non interferring channels (1, 6 & 11). How is this interference minimized?
How many non-interferring channels are there in the 5.8 G band? The 900 MHz band?
On the other hand, there are some WISPs that seem not to be going with a tall hill to deliver the broadband. I understand they are using mesh techniques right in a community. They aren't trying to deliver the broadband signal to a customer from a tall hill, but use mesh techniques.
So which method of delivering the broadband to a customer might be better, tall hill signal direct to the customer or using mesh techniques?
Don't all mesh techniques use backhaul on the same WiFi channel that it also uses to transmit the WiFI to the wireless client card? If so I would think this would slow down the data of WiFi users considerably.
Or is mesh used for the backhaul on either 2.4 G or 5.8 G, and then, 2.4 G access points are connected to each mesh node, where WiFi is needed? I would think 5.8 G backhaul mesh would be better since it wouldn't take up any WiFi channel spacel This right?
If a 2.4 G access point is used on a hill to deliver the broadband, what kind of security is used to keep people with their WiFi client cards from picking up the signal directly from the access point on the hill?
Where can I get the frequency information for the 5.8 G band and the 900 MHz band?
I guess 900 MHz is used to get through dense folage and into buildings, that might otherwise cause a problem for 2.4 G? Is the 900 MHz equipment mainly bridging equipment? I guess I could also use that to go directly to a broadband demarcation point?
I use to think a WISP might have a tower on top of a tall hill on 2.4 GHz, and then shoot the signal to clients below the hill. And then it might be bridged into the customers building to a demarcation point, via a wireless bridge.
I guess this signal from hill to customer can be on 2.4 GHz or 5.8 GHz...FHSS or DSSS? I heard that most WISPs are using DSSS?
As long as there is a broadband demarcation point for the customer, I guess it doesn't matter if it was delivered via 2.4 G or 5.8 G ?
Are many WISPs going with 5.8 G due to congestion on 2.4 G? Seems that 5.8 G will probably be congested soon also?
Seems to me that since 2.4 G is used by so many people in a single locality with access points, that there can be a very big chance of interference to a WISP who wants to use 2.4 G? After all there are only three non interferring channels (1, 6 & 11). How is this interference minimized?
How many non-interferring channels are there in the 5.8 G band? The 900 MHz band?
On the other hand, there are some WISPs that seem not to be going with a tall hill to deliver the broadband. I understand they are using mesh techniques right in a community. They aren't trying to deliver the broadband signal to a customer from a tall hill, but use mesh techniques.
So which method of delivering the broadband to a customer might be better, tall hill signal direct to the customer or using mesh techniques?
Don't all mesh techniques use backhaul on the same WiFi channel that it also uses to transmit the WiFI to the wireless client card? If so I would think this would slow down the data of WiFi users considerably.
Or is mesh used for the backhaul on either 2.4 G or 5.8 G, and then, 2.4 G access points are connected to each mesh node, where WiFi is needed? I would think 5.8 G backhaul mesh would be better since it wouldn't take up any WiFi channel spacel This right?
If a 2.4 G access point is used on a hill to deliver the broadband, what kind of security is used to keep people with their WiFi client cards from picking up the signal directly from the access point on the hill?
Where can I get the frequency information for the 5.8 G band and the 900 MHz band?
I guess 900 MHz is used to get through dense folage and into buildings, that might otherwise cause a problem for 2.4 G? Is the 900 MHz equipment mainly bridging equipment? I guess I could also use that to go directly to a broadband demarcation point?