| commit | 1a5439b7399a4dd56df0d9f25ab53716d79c8134 | [log] [tgz] |
|---|---|---|
| author | Pau Espin Pedrol <pespin@sysmocom.de> | Mon Jan 25 17:30:31 2021 +0100 |
| committer | Pau Espin Pedrol <pespin@sysmocom.de> | Tue Jan 26 16:26:34 2021 +0100 |
| tree | 24fba539288862ce25feebae730a564fd576fbcc | |
| parent | fc464935a451346a24150d60e62f84d42022f910 [diff] |
sched: Avoid picking TBF with nacked dl blocks when GMSK is required Sine we don't yet implement properly all resegmentation of blocks from same MCS family type, when requiring a GMSK DL block (due to GPRS+EGPRS multiplexing limitations) we need to skip retransmitions, otherwise we'd be incorrectly picking a DL block which was already built with a potentially higher MCS value. The "DL_PRIO_NEW_DATA" prio serves two purposes: * There's new data to send * There's some nacked data to be retransmitted The 2nd purpose has, later on, more priority over the 1st one when the tbf is selected (see gprs_rlcmac_dl_tbf::take_next_bsn()). Until now we were handling correctly the case where the tbf was skipped in case the prio was to resend unacked data (DL_PRIO_SENT_DATA), but was incorrectly selected when it'd send nacked data. Let's fix it by specifically checking w->resend_needed() < 0. Change-Id: I253de8e1a190a9adb56160f38892c9e43e2c0272
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