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gerrit.osmocom.org / osmo-trx / e91544d740a8606a994053b2f9eaf99059f40e33
commite91544d740a8606a994053b2f9eaf99059f40e33[log] [tgz]
authorPau Espin Pedrol <pespin@sysmocom.de>Tue Oct 13 17:03:37 2020 +0200
committerPau Espin Pedrol <pespin@sysmocom.de>Wed Oct 14 12:53:04 2020 +0200
tree94e32b203c6dc8e5af4eb8de280c6c841dc6d55e
parent93fee1f163054094ec52a87db33ab31e3b5ab74e [diff]
Calculate RSSI offset based on RxGain configuration

Prior to this patch, osmo-trx relied totally on proper VTY configuration
being set in "rssi-offset" together with the RxGain set through TRXC in
order to provide correct Uplink RSSI measurements to bts-trx.

With this patch, RSSI is now by default calculated (in LMS and UHD
backends) based on the currently set RxGain, by providing empirically
discovered values. Still, for backward compatibility, the old
"rssi-offset" command will overwrite completely the per-default
calculated rssi offset.
A new optional parameter "relative" is added at the end of the
"rssi-offset" VTY command to flag the value as relative to the newly
per-default calculated value. This way specific setups (like adding a
LNA / RF fronted) can still be expressed while still keeping the
automatic per-default offset.

Related: OS#4468
Change-Id: I8ef78fd20c22c60d61bfb18d80a4a36df4fd6c20
16 files changed
tree: 94e32b203c6dc8e5af4eb8de280c6c841dc6d55e
  1. CommonLibs/
  2. config/
  3. contrib/
  4. debian/
  5. doc/
  6. GSM/
  7. tests/
  8. Transceiver52M/
  9. utils/
  10. .clang-format
  11. .gitignore
  12. .gitreview
  13. configure.ac
  14. COPYING
  15. git-version-gen
  16. LEGAL
  17. Makefile.am
  18. Makefile.common
  19. README.md
  20. TODO-RELEASE
README.md

About OsmTRX

OsmoTRX is a software-defined radio transceiver that implements the Layer 1 physical layer of a BTS comprising the following 3GPP specifications:

  • TS 05.01 "Physical layer on the radio path"
  • TS 05.02 "Multiplexing and Multiple Access on the Radio Path"
  • TS 05.04 "Modulation"
  • TS 05.10 "Radio subsystem synchronization"

OsmoTRX is based on the transceiver code from the OpenBTS project, but setup to operate independently with the purpose of using with non-OpenBTS software and projects, while still maintaining backwards compatibility with OpenBTS when possible. Currently there are numerous features contained in OsmoTRX that extend the functionality of the OpenBTS transceiver. These features include enhanced support for various embedded platforms - notably ARM - and dual channel diversity support for the Fairwaves umtrx.

Homepage

The official homepage of the project is https://osmocom.org/projects/osmotrx/wiki/OsmoTRX

GIT Repository

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

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

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

Documentation

Doxygen-generated API documentation is generated during the build process, but also available online for each of the sub-libraries at User Manual for OsmoTRX can be generated during the build process, and is also available online at http://ftp.osmocom.org/docs/latest/osmotrx-usermanual.pdf.

Mailing List

Discussions related to OsmoTRX are happening on the openbsc@lists.osmocom.org mailing list, please see https://lists.osmocom.org/mailman/listinfo/openbsc 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 OsmoTRX can be seen at https://gerrit.osmocom.org/q/project:osmo-trx+status:open