cellular-infrastructure
/
osmo-pcu
mirror of https://gerrit.osmocom.org/osmo-pcu
9
0
Fork 1
Code Issues Releases Wiki Activity
Osmocom Packet control Unit (PCU): Network-side GPRS (RLC/MAC); BTS- or BSC-colocated https://osmocom.org/projects/osmopcu
1,940 Commits 65 Branches 19 Tags 34 MiB
C 57.4%
C++ 40.9%
Makefile 0.7%
M4 0.6%
Shell 0.4%
Go to file
Pau Espin c43570c351 RIM: Refactor Rx path to decode stack in proper order 
Previous implementation of the Rx path was first checking the APP ID
before checking the lower layer (container type), which was confusing
because the information is then not verified in ascending order in the
protocol stack.

Let's instead, first, pass the pdu to the correct container type
handler, and only once there, let each container type handler verify the
available applications.

Change-Id: Ibe017c1a6e789f45d74c4a5f5f4608298c8c9f91
 		2021-05-17 14:21:21 +02:00
contrib Bump version: 0.8.0.396-fe8d-dirty → 0.9.0 2021-02-23 14:41:01 +01:00
debian Bump version: 0.8.0.396-fe8d-dirty → 0.9.0 2021-02-23 14:41:01 +01:00
doc manual: Include QoS chapter and add osmo-pcu specific example 2021-04-29 22:16:49 +02:00
include Rework NS configuration over the info indication 2020-10-13 08:45:30 +00:00
src RIM: Refactor Rx path to decode stack in proper order 2021-05-17 14:21:21 +02:00
tests sched: Clean up helper function and improve logging 2021-05-12 14:23:59 +02:00
.gitignore .gitignore: ignore files ending with ~ 2021-01-05 11:34:45 +01:00
.gitreview add .gitreview 2016-05-19 06:39:45 +00:00
COPYING import GPLv2 license text to this project 2012-07-22 22:05:44 +02:00
Makefile.am Makefile.am: EXTRA_DIST: debian, contrib/*.spec.in 2020-05-22 13:43:32 +02:00
README.md Allow multiple bts objects in PCU 2021-01-20 12:36:21 +01:00
TODO TODO: remove those that have obviously been implemented 5+ years ago 2020-04-17 16:02:26 +00:00
TODO-RELEASE vty: Add configuration for Gb DSCP and socket priority 2021-04-29 22:13:05 +02:00
configure.ac Bump version: 0.8.0.396-fe8d-dirty → 0.9.0 2021-02-23 14:41:01 +01:00
git-version-gen Add auto-foo (partial cleanup, master makefile/configure.ac 2012-06-14 21:05:44 +08:00
osmoappdesc.py Remove dash from name used in VTY cmd prompt 2019-12-02 11:14:26 +00:00

README.md

osmo-pcu - Osmocom Packet Control Unit

This repository contains a C/C++-language implementation of a GPRS Packet Control Unit, as specified by ETSI/3GPP. It is part of the Osmocom Open Source Mobile Communications project.

The Packet Control Unit is terminating the Layer 2 (RLC/MAC) of the GPRS radio interface and adapting it to the Gb Interface (BSSGP+NS Protocol) towards the SGSN.

The PCU interfaces with the physical layer of the radio interface. OsmoPCU is typically used co-located with the BTS, specifically OsmoBTS. For legacy BTSs that run proprietary sotware without an interface to OsmoPCU, you may also co-locate it with the BSC, specifically OsmoBSC

Homepage

The official homepage of the project is https://osmocom.org/projects/osmopcu/wiki/OsmoPCU

GIT Repository

You can clone from the official osmo-pcu.git repository using

git clone git://git.osmocom.org/osmo-pcu.git

There is a cgit interface at http://git.osmocom.org/osmo-pcu/

Documentation

We provide a user manual as well as a vty reference manual

Please note that a lot of the PCU configuration actually happens inside the BSC, which passes this configuration via A-bis OML to the BTS, which then in turn passes it via the PCU socket into OsmoPCU.

Mailing List

Discussions related to osmo-pcu are happening on the osmocom-net-gprs@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/osmocom-net-gprs for subscription options and the list archive.

Please observe the Osmocom Mailing List Rules when posting.

Contributing

Our coding standards are described at https://osmocom.org/projects/cellular-infrastructure/wiki/Coding_standards

We us a gerrit based patch submission/review process for managing contributions. Please see https://osmocom.org/projects/cellular-infrastructure/wiki/Gerrit for more details

The current patch queue for osmo-pcu can be seen at https://gerrit.osmocom.org/#/q/project:osmo-pcu+status:open

Current limitations

  • No PFC support
  • No fixed allocation support (was removed from 3GPP Rel >= 5 anyway)
  • No extended dynamic allocation support
  • No unacknowledged mode operation
  • Only single slot assignment on uplink direction
  • No half-duplex class support (only semi-duplex)
  • No TA loop
  • No power loop
  • Multi-BTS support not tested