4G Simulator for OMNEST/OMNeT++ 4.2 ==================================== 4Gsim is an open-source 4G simulation package, written for OMNEST/OMNeT++ simulation system and developed over INET framework. Directors for 4Gsim: src/ applications/ application protocols diameter/ diameter base protocol diameters6a/ diameter application for s6a interface s1ap/ s1ap protocol nas/ nas protocol networklayer/ L3 (network layer) protocols gtp/ gtp protocol main path/ gtp path tunnel/ gtp tunnel util/ general utility classes asn/ utility classes for ASN.1 encoding/decoding gateway/ classes for 4Gsim gateways headerserializers/ serialize/parse methods for INET and 4G protocols subscriber/ classes for subscriber, PDN connection and Bearer context INET Framework for OMNEST/OMNeT++ 4.2 ===================================== The INET framework is an open-source communication networks simulation package, written for the OMNEST/OMNeT++ simulation system. The INET framework contains models for several Internet protocols: beyond TCP and IP there is UDP, Ethernet, PPP and MPLS with LDP and RSVP-TE signalling. See the CREDITS file for the names of people who have contributed to the INET Framework. IMPORTANT: The INET Framework is continuously being improved: new parts are added, bugs are corrected, and so on. We cannot assert that any protocol implemented here will work fully according to the specifications. YOU ARE RESPONSIBLE YOURSELF TO MAKE SURE THAT THE MODELS YOU USE IN YOUR SIMULATIONS WORK CORRECTLY, AND YOU'RE GETTING VALID RESULTS. Contributions are highly welcome. You can make a difference! See the WHATSNEW file for recent changes. GETTING STARTED --------------- You may start by downloading and installing the INET framework. Read the INSTALL file for further information. Then you can gather initial experience by following the INET tutorial. After that, you can learn the NED language from the OMNeT++ manual & sample simulations. After that, you may write your own topologies using the NED language. You may assign some of the submodule parameters in NED files. You may leave some of them unassigned. Then, you may assign unassigned module parameters in omnetpp.ini of your simulation. (You can refer to sample simulations & manual for the content of omnetpp.ini) Finally, you will be ready to run your simulation. As you see, you may use the INET framework without writing any C++ code, as long as you use the available modules. To implement new protocols or modify existing ones, you'll need to add your code somewhere under the src directory. If you add new files under the 'src' directory you will need to regenerate the makefiles (using the 'make makefiles' command). If you want to use external interfaces in INET, please install libpcap-dev (on linux) or winpcap (on windows from www.winpcap.org), then re-run the omnetpp configuration script (./configure). You should also enable the pcap support by editing the src/makefrag and then regenerating the INET makefiles (using the "make makefiles" command). Directory structure ------------------- Directories of INET framework source are arranged roughly along the OSI layers. Bottom-up: 3rdparty/ optional 3rd party components like (Network Simulation Cradle etc.) doc/ documentation examples/ example networks for various protocols src/ applications/ application layer dhcp/ DHCP protocol (maintainer: JCM, origin: https://github.com/jmaureir/DHCP) ethernet/ traffic generators (directly for Ethernet) generic/ traffic generators (directly for IP) httptools/ HTTP traffic generator (maintainer: KVJ, origin: http://omnet-httptools.googlecode.com/svn/trunk/omnet-httptools-read-only) pingapp/ ping application rtpapp/ RTP (real-time Transport Protocol) application sctpapp/ SCTP applications (maintainer: TD) tcpapp/ TCP application models udpapp/ UDP application models (VideoStream, etc.) voiptool/ VoIP applications (maintainer ZB, origin: http://www.tkn.tu-berlin.de/research/omnetVoipTool) base/ common header files, base classes battery/ Battery model (maintainer AAQ, origin: mixim + INETMANET) linklayer/ L2 (data link layer) protocols contract/ API to common L2 functionality ethernet/ Ethernet model (MAC, LLC, Encap, Switch) ext/ External interface (allowing the simulation to work with real hardware) ieee80211/ ieee 802.11 interface (maintainer: AAQ origin: https://github.com/aarizaq/inetmanet-2.0) ppp/ basic PPP model (framing only) radio/ common radio infrastructure, propagation models etc. queue/ generic queueing framework (maintainer TB) mobility/ Node mobility models (origin: mobility framework + mixim + inetmanet) networklayer/ L3 (network layer) protocols arp/ ARP protocol autorouting/ autoconfiguration of static routes bgpv4/ BGP V4 protocol (see BGPv4 feature) //TODO common/ InterfaceTable, InterfaceEntry modules //TODO contract/ API to common L3 functionality icmpv6/ ICMPv6 implementation ipv4/ IPv4 and associated protocols ipv6/ IPv6 implementation ipv6tunneling/ IPv6 tunneling support ldp/ LDP signalling protocol for MPLS (maintainer: VJ) manetrouting/ Mobile AdHoc Routing protocols (maintainer: AAQ origin: inetmanet) mpls/ MPLS implementation (maintainer: VJ) ospfv2/ OSPF protocol (maintainer: ???) rsvp_te/ RSVP-TE signalling protocol for MPLS (maintainer: VJ) ted/ Traffic Engineering Database (maintainer: VJ) xmipv6/ mobile IPv6 protocol (maintainer: FZY) nodes/ protocol stacks, host and router models bgp/ IPv4 router with BGP and OSPF support ethernet/ nodes allowing direct ethernet communication httptools/ HTTP traffic generator (maintainer: KVJ, origin: http://omnet-httptools.googlecode.com/svn/trunk/omnet-httptools-read-only) inet/ IP-based components ipv6/ IPv6-based components mf80211/ host for mf80211 mpls/ router models with MPLS/LDP/RSVP-TE ospfv2/ an OSPFv2 router node wireless/ nodes for wireless simulations xmipv6/ mobile IPv6 nodes (maintainer: FZY) transport/ transport layer protocols contract/ API to transport layer functionality rtp/ Realtime Transport Protocol (see AUTHORS file in directory) sctp/ Stream Control Transmission Protocol (maintainer: TD) tcp_common/ Common generic part of the different TCP implementations tcp/ TCP protocol (supporting SACK) (default TCP implementation) tcp_nsc/ TCP protocol using Network Simulation Cradle tcp_lwip/ TCP protocol using Lightweight IP library udp/ UDP protocol util/ various utility classes world/ various modules that are used at network level (i.e. global modules) annotations/ allows drawing some additional shapes on the Tkenv canvas (maintainer: CS) httptools/ global components for HTTP traffic generation (maintainer: KVJ, origin: http://omnet-httptools.googlecode.com/svn/trunk/omnet-httptools-read-only) obstacles/ obstacle models that block the radio transmission (maintainer: CS) powercontrol/ enable/disable power control aware modules (maintainer: JCM) radio/ global modules for radio models - radio channel access scenario/ create sim scenarios, change parameters over time traci/ allows connecting to a TraCI server (maintainer: CS, origin:http://veins.car2x.org) tests/ automatic tests for the INEt framework Maintainers / authors: TD - "Thomas Dreibholz" ZB - "Zoltan Bojthe" JCM - "Juan-Carlos Maureira" AAQ - "Alfonso Ariza Quintana" KVJ - Kristjan V. Jonsson (LDSS) TB - Tamas Borbaly LM - Levente Maszaros FZY - Faqir Zarrar Yousaf VJ - Vojtech Janota CS - Christoph Sommer xMIPv6 additions for INET Framework ======================================= further info: http://www.kn.e-technik.tu-dortmund.de/content/view/232/lang,de/ VoIPTool 2.0 ============ This is the OMNeT++ 4.x port and complete rewrite (by Zoltan Bojthe) of the TKN VoIPTool, http://www.tkn.tu-berlin.de/research/omnetVoipTool/ The fraction of voice over Internet Protocol (VoIP) based telephone calls among the totality of voice based communication acts has been significantly growing during the last years. In wired as well as wireless communication applications, VoIP is expected to completely replace former circuit switched telephony. This project provides an OMNeT++-based VoIP traffic generator that creates realistic VoIP packet streams, due to the utilization of real audio data and an existing VoIP standard codec. Moreover, by applying ITU-T's perceptual evaluation of speech quality (PESQ) approach at the sink, the perceived quality of a transmitted VoIP stream can be determined. This library is an add-on to the INET Framework, http://inet.omnetpp.org. It provides two modules: VoIPSourceApp and VoIPSinkApp. Both are application- layer modules that operate over UDP, and can be used in INET's StandardHost very much like other UDP traffic generators and sinks (see the udpApp[] submodule vector, numUdpApps parameter, etc. in StandardHost.) VoIPSourceApp accepts an audio file and a destination IP address/port as input, and will transmit the file's contents as voice traffic over UDP n times (by default once). For transmission, the audio is resampled at the given frequency (by default 8KHz) and depth (by default 16 bits), and encoded with the given codec (by default G.726) at the given bit rate (by default 40Kbps), and chopped into packets that each carry dt milliseconds of voice (by default 20ms). (The above default values may be out of date; actual values come from the NED file). Packets that are all silence (all samples are below a given threshold in absolute value) are transmitted as special "silence" packets. The module does not simulate any particular VoIP protocol (e.g. RTP), but instead accepts a "header size" parameter that can be set accordingly. VoIPSinkApp listens on an UDP port, and expects to receive VoIP packets on it. The received voice is then saved into a result audio file that can be compared with the original for further evaluation. VoIP packets are numbered, and out-of-order packets are discarded (the corresponding voice interval will be recorded as silence into the file). VoIP packets that miss their deadlines will similarly be discarded. It is assumed that the audio is played back with delay (by default 20ms), which allows some jitter for the incoming packets. The resulting audio file is closed when the simulation completes (i.e. in the OMNeT++ finish() function). Related publication: M. Bohge and M. Renwanz, "A realistic VoIP traffic generation and evaluation tool for OMNeT++", 1st International OMNeT++ Workshop, March 2008, Marseille, France. --- Andras