commit | 7d0f9a0ec383fcfca934731bd6979b6be6629c90 | [log] [tgz] |
---|---|---|
author | Pau Espin Pedrol <pespin@sysmocom.de> | Fri Nov 27 14:51:27 2020 +0100 |
committer | Pau Espin Pedrol <pespin@sysmocom.de> | Tue Dec 01 15:57:37 2020 +0100 |
tree | c359d5cd883253dd0c7c5f0d7cf0c5a218b7a5a5 | |
parent | 30d9a5989e939f665623d998eb2f772c5dd91598 [diff] |
Dl TBF: Get rid of LLC UI dummy blocks following other data According to: * 3GPP TS 44.060 version 16.0.0 "9.3.1a Delayed release of downlink Temporary Block Flow" * 3GPP TS 44.064 version 16.0.0 "6.4.2.2 Unconfirmed Information (UI) Dummy command" LLC UI Dummy frames are to be used when there no more data to send, only in order to delay the release of a TBF. Hence, while not incorrect per se, makes no sense to send those LLC UI Dummy frames inserted into rlcmac blocks which already contain other LLC frames, since the MS in that case is already being kept active. It only makes sense to send those LLC UI Dummy frames when we have nothing else to send, that is, alone inside a RLCMAC block without other LLC frames. Related: OS#4849 Change-Id: Ifae1a7b2b3dfad8df19585063088ba0df2749c8f
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