Ns-3.22
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This page summarizes the release planning for ns-3.22. The ns-3 release process is listed here and here.
The release manager is Tom Henderson. Please contact him if you would like to participate in any way in preparing the ns-3.22 release.
Contents
Release goals
1) make a major dent in the bug tracker
2) continue the transition to a more modular build system
3) merge (into ns-3-dev or to a bake-enabled repository) as many new features as we can get ready, including all remaining features from 2013 and 2014 GSOC and SOCIS projects, and 2014 summer projects
Release schedule
ns-3.22 is planned for mid-January, 2015. ns-3 makes roughly three releases per year (Dec/Jan, Apr/May, and Aug/Sept timeframes).
This means that we ought to get most new features and major changes into the simulator by early December.
Packaging
ns-3.22 will be packaged as a source tarball as before: ns-allinone-3.22.tar.bz2.
The tarball will contain:
- Latest version of pybindgen
- Latest version of netanim
- ns-3.22
- bake
where bake is used to fetch optional ns-3 components, including DCE.
A patch from ns-3.21 to ns-3.22 will also be posted.
Whether ns-3.22 is prepared in other packaging (e.g. Debian) is to be determined.
Whether ns-3.22 will be distributed also as a Docker container is to be determined.
Release platforms
We usually try to keep pace with the latest popular versions of Linux, OS X, and FreeBSD. For the ns-3.22 release, we plan to support the following systems and compilers:
- OS X 10.10 Yosemite with latest Xcode
- Ubuntu 14.04 and 14.10 (gcc-4.8, 4.9)
- Fedora 20 and 21 (gcc-4.8, 4.9)
- Debian 7 (gcc-4.9)
- FreeBSD 10.1 (clang 3)
- some legacy platforms (to be determined); likely older Ubuntu LTS and CentOS systems, and OS X 10.9
New features
Developers are working or planning to work on the following new features for ns-3.22. Note: there is no guarantee that the features will be finished by the end of the year, so check back for progress/status.
Changes to the simulation core
- Python 3 support (Siddharth Sankurdar)
- Synopsis: ns-3 is Python 2 based, and must be upgraded to support both Python 2 and 3
- Discuss changes due to Object Start/Stop discussion held at May developers meeting.
- Shared RngStream (Peter Barnes)
- Synopsis: Add API to allow multiple random variables to share an underlying RNG stream
- https://codereview.appspot.com/114060043/
- Changes to better support ns-3 on Windows Visual Studio
Others to be determined
Statistics
- Add a basic statistics collector, and convert some existing stats helpers in LTE and WiFi to use the statistics framework (Tom Henderson and Li Li)
Internet module
- An implementation of MLDv2 for IPv6 (Krishna Teja Yadavalli and Tommaso Pecorella)
- FQ-Codel and SFQ-Codel models (Anh Nguyen and Dave Taht)
- http://www.nsnam.org/wiki/GSOC2014Bufferbloat
- This will require some refactoring to allow AQM queues that need access to the IP and transport headers to get access at the layer at which ns3::Queue operates
- Move RED queue from network module to internet module
TCP
- TCP variants for satellite networks (Natale Patriciello)
- RttEstimator improvements (Natale Patriciello)
- Multipath TCP (Morteza Kheirkhah Sabetghadam)
WiFi
- MPDU aggregation for 802.11n (Sebastien Deronne and Ghada Badawy, and others)
Vehicular networks
- WAVE for 802.11 vehicular networks (Scott Carpenter and Junling Bu)
- Finish off the 2013 GSoC code merging
- VANET example (Scott Carpenter)
- Routes Mobility Model (Tiago Cerqueira)
Delay-tolerant networking
- Self-Delimiting Numeric Values (Dizhi Zhou and Ruben Martinez)
- Licklider Transport Protocol (Ruben Martinez)
- Bundle Protocol from SOCIS 2013 (Dizhi Zhou)
DSR
- LEAR extensions https://codereview.appspot.com/96130043/
CSMA improvements =
- https://codereview.appspot.com/109450044/ (Mehdi Moussouni)
Epidemic Routing
Software maintenance issues
- Remove emu module from codebase (1945) (Tom Henderson)
- Mesh test crashes for certain configurations
- Time arithmetic consistency
- Wstrict-overflow and gcc-4.9 (Tom Henderson and Peter Barnes)
- Remove unnecessary dependency on Application module in other modules (1941) Tommaso Pecorella
- Cleanup of remaining modules unnecessarily dependent on applications (aodv, mesh, olsr, lte)
Documentation improvements
- improve documentation on linking ns-3 with other libraries (Tom Henderson)
To be determined
Bugs or issues in ns-3 core
To be determined
Bugs in models to fix
To be determined
Documentation improvements
To be determined
