| commit | 2ba608415bc9655703c9b29aa4781e4a417e0990 | [log] [tgz] |
|---|---|---|
| author | Minh-Quang Nguyen <minh-quang.nguyen@nutaq.com> | Tue Nov 07 15:17:12 2017 -0500 |
| committer | Daniel Willmann <dwillmann@sysmocom.de> | Wed Mar 27 14:19:40 2019 +0100 |
| tree | 018b3a5fe4ca213329b1031ba975b46966784d8c | |
| parent | 4a1796fe76010270abca056ceeb7785bf46e5e3c [diff] |
OC-2G: Fix TA adjustment Problem: TA provided from L1 PH-DATA-IND is a relative amount of TA adjustment to actual TA being used for given TBF. The current TA update algorithm in PCU simply applies the relative amount of TA to given TBF but does not take into account of current TA. As a result, the PCU will request wrong TA jump for given TBF if the MS is moving away from BTS more than 2 km. Related issue: http://osmocom.org/issues/2611 Fixes: - The PCU needs increase or decrease current TA of given TBF on receiving of relative amount of TA adjustment provided by PH-DATA-IND from L1. - The PCU needs to set absolute TA of given TBF on receiving absolute TA provided by PH-RA-IND from L1. From-Commit: 139ad3f42193 From-Remote: https://gitlab.com/nrw_noa/osmo-pcu Change-Id: I7665586dd5722bbe04632ee5673d3033bc082324
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