| commit | 210ccf4a1da89da9a32745d38ee518c144715ddb | [log] [tgz] |
|---|---|---|
| author | Alexander Couzens <lynxis@fe80.eu> | Sun Jun 16 17:05:40 2019 +0200 |
| committer | Alexander Couzens <lynxis@fe80.eu> | Thu Jul 11 18:38:45 2019 +0200 |
| tree | 97c00ae8bffa59d9651be787f52cf89de0b427b1 | |
| parent | 5c3a9880cadc29ab8f4354ad2205563ab51201d7 [diff] |
Encoding: ACK/NACK: always encode with length field present In most cases the length field was present and this field takes 7 bits of the maximum available 110 rest bits. The length field was only removed when encoding huge bitmaps usually only happen on lossy connections with packet lost. However the cases without length field were encoded incorrect, because all remaining bits must be used by the uncompressed bitmaps, but the PCU violates this by encoding always the "release 5" bit. Rather than fixing the encoding without length field, simply remove it and always encode with length field. This also reduces the code complexity. Change-Id: I7bc2e18d647b72b8f17ba7a5c9c5e421d88275fb
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
The official homepage of the project is https://osmocom.org/projects/osmopcu/wiki/OsmoPCU
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/
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.
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.
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