base hopping

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kbentz

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just wondering... obviously not enuf network cover yet..

can you with mywireless travel in a car from point A to B connected to your laptop and remain covered. I'm not thinking so coz you are logging onto one specific tower and when you leave its cover you will have to relog on to the next available tower, it wont just automatically hop you across, unlike my mtn gprs, i can be connected to net on laptop using phone as modem from jhb to capetown and remain connected the whole way.... am i thinking right?
 
posted this this morning and got no replies so calling back up to the top of the queue...
 
What you say is in fact correct. The PPP connection will be lost when out of range of a tower. There is no soft handoff or anything like that unfortunately. Thus, its rather a fixed wireless system since you only have a fixed radius of movement while being connected. Granted its a large radius.
 
2 things:

1) The standard to which the IPWireless gear is supposed to conform certainly DOES provide for soft handover and transitioning. I don't think IPWireless has implemented it though. This one is NOT Sentech's fault [^]

2) Radius may not be the best word to use [:(]... Most towers are split into 3 sectors with distinct frequencies - this means that if you had to drive in a circle within the coverage of 1 tower you'd probably get disconnected 3 times before getting back to your starting point... Of course providing that you don't drive into anything ;-)

R

************************************************************
The views expressed on this site are my own and NOT those of my employer.
 
"Of course providing that you don't drive into anything "

that is why i love you guys so much
 
I still don't believe this.
IPWireless does support it according to their docs.
The PPP session shouldn't even notice the switch, since you still talk to the same PPP server no matter which tower you connect to...atleast, that's how I understand it.

--
 
I forgot about the sectors [:I]

So yes you have to stay within 5km in a 120 degree fanout.. which sucks when you ride circles around the tower looking for strongest signal.

It would be super if there were a soft handoff (which there obviously is NOT) so that if your tower fails then you could be switched over to another tower OR if for some reason your modem picks up a stronger signal then it would switch over. If only..
 
UMTS TDD subscribers can stay connected while traveling in excess of 120 km/hr, so long as they remain within the network footprint. Tower-to-tower handoff, and network-to-network roaming are supported.


MyDraadloos -Base 36 Bedfordview Signal=9%patch Freq=2518 Gain99db
 
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by MyDraadloos</i>
<br />Tower-to-tower handoff, and network-to-network roaming are supported.
<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">

Ok, now prove it...
 
Well the IPWireless guys arrived this morning so we are grilling them about various things atm.
Saturday the Woosh guys arrive.
[;)]


<hr noshade size="1"><center><font color="blue">MyWireless Stuff</font id="blue">
<font size="1"><font color="black">The opinions expressed here are mine alone and do not necessarily reflect the opinions of my employer</font id="size1"></font id="black"></center>
 
ProASM - if you haven't already asked them, ask the IPWireless & Woosh guys if there will be any NodeDB software modifications to enable better pings (ie. reducing the wait time for response (I believe Rodent called it "the frame length of 10ms")

Also I hope you have conveyed how crap their drivers are...

<font color="blue">Telkom needs a leash, ICASA needs some guts, and the </font id="blue"><font color="red">SA consumer</font id="red"><font color="blue"> needs to make it happen</font id="blue">
 
This is what is possible, not sure if Sentech have strung up the tin cans correctly for this to work ............

http://www.umtstdd.org/technology.html

MyDraadloos -Base 36 Bedfordview Signal=9%patch Freq=2518 Gain99db
 
MyDraadlos, the problem's not Sentech side from what I've been told by Axcera - the makers of our modem (yes, the chipset is IPWireless - but the modem is made by axcera). I got a mail back from their support guys concerning this question.

They say that hand off (SHOULD) work ... the problem is that the hand-off takes minutes not seconds .. that's why connection DOES drop....

R

************************************************************
The views expressed on this site are my own and NOT those of my employer.
 
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