Open Cellular Vehicle To Everything (OpenCV2X) - Mode 4

Bugfixes

• Removed variables which caused a build error in the released code

Downloads

• OpenCV2X tar file
• SimuLTE tar file
• OpenCV2X zip file
• SimuLTE zip file

Changes

• Introduced additional statistics such as awareness i.e. number of neighbouring nodes which a ue is aware of based on previously decoded CAMS. Includes some additional information about selected grant resources such as whether they were previously seen as reserved yet were still selected as a potential CSR.
• Improved subchannel selection to ensure the correct number is selected based on packet size..
• Removed redundant variables and generally reduced code base where possible.

Bugfixes

• Fixed issue with HD errors being attributed to the incorrect subframe.
• Fixed issue where packets which failed to be decoded were incorrectly passed to upper layers by the HARQ buffers.

Changes

• BLER curve lookup based on the packet not individual RBs.
• Fix to the Nakagami fading implementation. Recoding to make it easier to adapt if extending the model.
• Change to the calculation of propagation and interference results to ensure that one random variable determines their outcome as opposed to two random variables as per previous releases.

Bugfixes

• SCI RBs are now accounted for in RSRP calculations.

Changes

• Received power distributed across the RBs used in transmission. This impacts on the RSRP, SINR/SNR and RSSI calculations.
• RSSI calculation updated to align with the definition by 3GPP.
• Some efficiency improvements which avoid calculating interference multiple times instead now we do it only once per received transmission.
• Pathloss model updated in line with the analytical model.
• Additional BLER curves added based on the analytical model.
• A general reduction in the duplicate code in the channel model.
• Tidying of simulation folders and changes to SUMO files, removed fixed paths a knock-on effect of this is that using the model requires updating of .launchd.xml files.
• Addition of statistics allowing you to determine the cause of packet loss e.g. interference or propagation loss.

Bugfixes

• Fix issue with sign on probResourceKeep variable being the wrong way resulting in the probability being inverted.
• Fix issue where RBs were not assigned correctly to the SCI in the non-adjacent mode.
• Fix issue where SCIs did not experience interference in the non-adjacent mode.
• Fixes to PHY layer calculations to ensure accuracy of calculation of RSRP,SINR/SNR and RSSI.

Features

• Update includes a standalone SimuLTE version which works with Veins.

Bugfixes

• BLER curve lookup fixed.
• SB-SPS algorithm fix to avoid unintended packet collisions.

Features

• Implementation of 3GPP CV2X (Rel 14) Mode 4.
• Includes integration with ETSI ITS-G5 compliant Artery Framework.