GWISA=SCREAMER

I am about to sign up with screamer for my daughter who is moving to a complex.I hope they are better than Neotel.Telkom take to long and I Bust is pathetic.Tower will be 1 km away Fourways Mall.I hope it is not over saturated as I am trying for a 1 meg download speed.
 
In general Screamer are very good - they still have some "teething issues" but are responsive in addressing problems and friendly as well.

Better than the competition :)
 
placebo said:
I am about to sign up with screamer for my daughter who is moving to a complex.I hope they are better than Neotel.Telkom take to long and I Bust is pathetic.Tower will be 1 km away Fourways Mall.I hope it is not over saturated as I am trying for a 1 meg download speed.
Click to expand...

I doubt you'll be getting 1meg D/L. My understanding is that your distance from the tower doesn't matter too much (up to a point of course), but that you're D/L speed depends more on the tower congestion. I'm about 2km from the tower and I've never gotten close to 1meg.
 
The speed that you get is completely dependant, and only dependant, on the speed that you are provisioned with on the Screamer network. Our standard is a 512k link and most of our customers get close to that. Our engineers do sometimes provision clients with 1Mb and 2 Mb links if they have the larger (5G-10G) packages with us.

We NEVER EVER, over contend our WiMAX base stations and the moment a b/s gets to 60% of capacity we erect another one or provide bigger bandwidth into it.
 
howzit said:
The speed that you get is completely dependant, and only dependant, on the speed that you are provisioned with on the Screamer network. Our standard is a 512k link and most of our customers get close to that. Our engineers do sometimes provision clients with 1Mb and 2 Mb links if they have the larger (5G-10G) packages with us.

We NEVER EVER, over contend our WiMAX base stations and the moment a b/s gets to 60% of capacity we erect another one or provide bigger bandwidth into it.
Click to expand...

So when you reach 60% of the total CIR of all customers? Or MIR?
So lets see.. a Typical BreezeMax Sector handles 12mbit/s for a 3.5Mhz channel.
So if you're setting a CIR of 512kb/s per customer, then you upgrade as soon as you hit 15 customers?
Doesn't seem practical, or profitable at all...
 
daffy said:
So when you reach 60% of the total CIR of all customers? Or MIR?
So lets see.. a Typical BreezeMax Sector handles 12mbit/s for a 3.5Mhz channel.
So if you're setting a CIR of 512kb/s per customer, then you upgrade as soon as you hit 15 customers?
Doesn't seem practical, or profitable at all...
Click to expand...

Possibly, but any similarity between a theoretical WiMAX network and a practical one is purely coincidental.
 
howzit said:
Possibly, but any similarity between a theoretical WiMAX network and a practical one is purely coincidental.
Click to expand...

Oh, I'm not talking theory here. I talk from practical experience with Alvarion BreezeMax Fixed WiMax... Infact, that was an optimistic estimate.
 
daffy said:
Oh, I'm not talking theory here. I talk from practical experience with Alvarion BreezeMax Fixed WiMax... Infact, that was an optimistic estimate.
Click to expand...

And from your practical experience what is the most subscribers you have had connected to an Alvarion BreezeMAX base station and at what data rate before the service became diminished?
 
daffy said:
So when you reach 60% of the total CIR of all customers? Or MIR?
So lets see.. a Typical BreezeMax Sector handles 12mbit/s for a 3.5Mhz channel.
So if you're setting a CIR of 512kb/s per customer, then you upgrade as soon as you hit 15 customers?
Doesn't seem practical, or profitable at all...
Click to expand...

@ Daffy
To start with we are using 2.5 TDD which is more efficient than 3.5 FDD Wimax. On a 3.5 Mhz channel you can actually only use 8 Meg per sector and not 13 Meg.

You have also ignored a contention ratio, which you have to establish from practical experience, which does not affect your clients performance. Note my post says "not overcontend"

Telkom for instance use a contention ratio of 32:1.
Before I continue I would be interested in hearing what contention ration you use on your network as well as a reply to Slivers post above....
 
SliverZA said:
And from your practical experience what is the most subscribers you have had connected to an Alvarion BreezeMAX base station and at what data rate before the service became diminished?
Click to expand...

Ah, thats why they pay me the good money ;)
 
howzit said:
@ Daffy
To start with we are using 2.5 TDD which is more efficient than 3.5 FDD Wimax. On a 3.5 Mhz channel you can actually only use 8 Meg per sector and not 13 Meg.

You have also ignored a contention ratio, which you have to establish from practical experience, which does not affect your clients performance. Note my post says "not overcontend"

Telkom for instance use a contention ratio of 32:1.
Before I continue I would be interested in hearing what contention ration you use on your network as well as a reply to Slivers post above....
Click to expand...

My practical experience shows 13mbit/s on a 3.5Mhz channel using 3.5Ghz FDD.
I haven't ignored the contention ratio.
Thats why I asked about MIR and CIR.
Lets say you offer a customer a 2mbit/s service, with a contention ratio of 4:1
That means that they get an MIR of 2mbit/s, with a CIR of 512kbit/s. (Since, according to your Contention ratio, the slowest they can get is 1/4 of the most they can get).

So if Telkom is contending their 512kbit/s WiMax product at 32:1, that means your CIR is 16kbit/s. Thats woeful.

Now poke as many holes in my calculations as you want, but realise that they're about the only way that you can stick to your contract.

Then base your maximum number of associations on your total "sold" CIR. (or 70, whichever one is less ;P )
 
howzit said:
@ Daffy
To start with we are using 2.5 TDD which is more efficient than 3.5 FDD Wimax.
Click to expand...

Efficient in terms of spectrum utilisation, yes. However that means nothing. You actually have less capacity on a TDD system because U/L and D/L are shared in a single Time Division contended slot.

FDD can effectively D/L and U/L without contention because it uses a channel for U/L and a channel for D/L.

howzit said:
On a 3.5 Mhz channel you can actually only use 8 Meg per sector and not 13 Meg.
Click to expand...

That would be the single shared channel hitting you yes...

howzit said:
You have also ignored a contention ratio, which you have to establish from practical experience, which does not affect your clients performance.
Click to expand...

Eh wot ? You smoking socks ?
 
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