This is merely a historical archive of years 2008-2021, before the migration to mailman3.
A maintained and still updated list archive can be found at https://lists.osmocom.org/hyperkitty/list/osmocom-net-gprs@lists.osmocom.org/.
Matthew Johnson matt9j at cs.washington.eduHello Xinke, I'm a graduate student at the University of Washington, and just brought up an EGPRS/GPRS network with an Ettus B210/osmo-trx. My B210 has a GPSDO as well. I'm just getting started on this project (so I'm unfortunately not the expert you are looking for), but I can corroborate that I am also seeing very limited single user throughput in EGRPS and vanilla GRPS (6-8kbps maximum measured via iperf). My network is built with the latest split components running on a debian9 virtual machine via virtualbox. I'll attach my configs here if they're helpful. I also have access to a litecell1.5 and will be bringing up the network on it in the next few weeks, so I'll be able to report if it behaves any better. The litecell setup will also be running on dedicated hardware to rule out any strangeness from virtualbox. Sorry I don't have any other clues at this time, but I can at least confirm Neels's analysis above and rule out the impact of running the old nitb and ggsn. Cheers, -Matt Johnson On Mon, Mar 5, 2018 at 2:15 PM, Neels Hofmeyr <nhofmeyr at sysmocom.de> wrote: > On Sat, Mar 03, 2018 at 12:18:52PM +0000, XINKE ZHANG wrote: > > I'm sure that B210 has a GPSDO. I execute 'uhd_usrp_probe' to prove it. > > I'm not familiar with it, but if you say so. > > > My entire config files are attached here. Pls help check it. Thanks. > > It all looks good to me. Two minor notes: > > - the pcu config once needed 'two-phase-access' to function reliably, but > this > is no longer needed. > > - you seem to be running an old version of the ggsn. The new one is called > osmo-ggsn with a config file style and vty interface like the other osmo > programs. However, this should not affect your downlink throughput. > > - you also seem to run osmo-nitb, we have moved to separate programs, being > osmo-hlr, osmo-msc and osmo-bsc. Refer to > http://osmocom.org/projects/cellular-infrastructure/wiki/ > Osmocom_Network_In_The_Box > This should, however, not affect your downlink throughput, either. > > So yeah, sorry, but I have nothing of weight to add. Maybe someone else > here > has deeper knowledge of EGPRS and SDR based BTS? > > ~N > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.osmocom.org/pipermail/osmocom-net-gprs/attachments/20180404/ca47c098/attachment.htm> -------------- next part -------------- A non-text attachment was scrubbed... Name: nitb.tar.gz Type: application/gzip Size: 3024 bytes Desc: not available URL: <http://lists.osmocom.org/pipermail/osmocom-net-gprs/attachments/20180404/ca47c098/attachment.bin>