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laforge, 10/28/2017 09:05 PM
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Configuration Guide

The first challenge in setting up a cellular network is to actually know what you
want to setup and which components you need to achieve that.

2G Networks

Radio Equipment

There is a multitude of BTS equipment that works with Osmocom to choose from.

Various BTS models actually run Osmocom's OsmoBTS and OsmoPCU software on the BTS itself:

  • sysmoBTS models 1002, 1002OD, 1020, 1200, 1100 and 2050 (osmo-bts-sysmo)
  • SDR based BTSs, e.g. using the Ettus B200 or Fairwaves' UmTRX (osmo-trx plus osmo-bts-trx)
  • Octasic OctBTS (osmo-bts-octphy)
  • Nutaq Litecell 1.5 / sysmoBTS 2100 (osmo-bts-lc15)

Others are "closed" BTS that are nevertheless interoperable with Osmocom's BSC implementation:

Core Network

  • Are you going to plug into a 3rd party MSC, e.g. the "voice" part of a mobile operator's core network? Then you will want to use the standalone OpenBSC approach.
    • Since 2017, Osmocom offers a true SCCP/M3UA based 3GPP A-over-IP interface. This is available in the new osmo-bsc.git look for "osmo-bsc" in Binary_Packages or sysmocom OpenEmbedded feeds (starting from "201705").
    • Originally, Osmocom supported only an SCCPlite based A-interface. This is still available in the old openbsc.git in Binary_Packages or sysmocom OpenEmbedded feeds (starting from "201705"), look for osmo-bsc-sccplite.
  • GPRS and EGPRS data services are provided by, for example, OsmoSGSN and OsmoGGSN. Operation with a 3rd party SGSN or GGSN are also possible.
  • Osmocom also contains various tools to tunnel GTP, RTP/MGCP or A protocols through a NAT layer:
    • osmo-bsc_nat
    • osmo-bsc_mgcp
    • gtphub

3G Networks

Radio Equipment

You will need hNodeB hardware that is capable of talking the Iuh protocol over IP. This type of 3G cell is also known as small cell or femto-cell.

sysmocom offers a professional small cell product for these purposes to customers.

We're also working on a lowest-cost femtocell offering strictly limited to active contributors to the Osmocom projects.

Core Network

As outlined in this article, the Osmocom 3G core network uses OsmoHNBGW to connect to OsmoMSC and OsmoSGSN. Furthermore osmo-bsc_mgcp is used to relay RTP voice streams and OsmoGGSN may be used to provide data services.

See Getting Started with 3G

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