3 Feb
2014
3 Feb
'14
4:31 p.m.
Hi,
GPRS has two modes of operation - closed loop and open
loop. What you're
describing here and what is implemented in both OpenBTS and OsmoPCU.
I'm pretty sure that commercial networks use closed loop control nowadays,
and it's a TBD item in OsmoPCU.
OK, I understand.
It's a different issue with EDGE.
EDGE uses 8-PSK modulation scheme, which is a bit more more sensitive to
noise than GMSK and thus may not work at the edge of coverage.
Well, it is only with one operator, and the problem came up when they implemented EDGE, it
only worked when you could see the BTS. Others have EDGE running until the end of coverage
without any problems :)
--
Regards,
Alexander Chemeris.
Ralph.