GLOMOSIM SIMULATOR

Glomosim Simulator [Global Mobile information System simulator] is a network simulator used to simulate network protocols. In this GlomoSim simulator is used to simulate large scale wireless and wired networks. It works using parallel discrete event simulation capabilities which is provided by Parsec[C based simulation language]. So It is wonderful simulation tool, which can give efficient result if worked properly. It supports Mobile adhoc networks and many major networking areas, which makes it attractive in the midst of scholars.

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GLOMOSIM-SIMULATOR TOOL

Glomosim simulator [parallel discrete event simulator] is used to simulate wired and wireless communication network systems.

Highlighted features of Glomo-sim

It contains modular and also extensible library for network models
Supports protocols also used in only wireless networks
Platform independent and also latest version[Glomosim -2.03]
Commercialized by scalable simulation solutions also used for research purpose
It act as a base also for commercial qualnet simulator
Uses Customizable GUI[Visualization tool- platform independent as coded also in java ]
Uses interfaces to support interoperability between OPNET and also GlomoSim models with the help of HLA and RPR-FOM.
Supports Parallelization and also built according to the OSI layered approach.
Can be used also for real time simulation of networks.

Programming Languages Used

Java[.java]

Java makes Glomosim platform independent and also used in Glomosim Visualization tool.

C[.c,.h,.pc]

GlomoSim is built using parallel discrete event simulation also using the capabilities of Parsec[C-based simulation language(.pc)]

Tools and plugins Support

Yavista

Current version- NS 2.29, NS-2.30, also Glomosim 2.03
Written in Java and also platform independent
It is also a graphical tool to compare 802.11 simulators

Algorithms and Techniques Used

Glomosim Layer based Algorithms and Techniques:

Data Link Layer:

Carrier Sense Multiple access
Multiple access also with collision avoidance
Time spread multiple access technique
11 [set of MAC and physical layer specification also for implementing WLAN systems]

Network layer Routing Protocols:

Bellman-Ford algorithm
Fisheye state routing
Open shortest path first algorithm
Dynamic source routing
Ad hoc On Demand Distance vector routing

Transport layer protocol:

Transmission control protocol[TCP]
User Datagram Protocol[UDP]

Application layer protocol:

Telnet[uses underlying TCP/IP protocol]
File transfer protocol[FTP]

Physical layer [Radio propagation]:

Free space propagation model
Two ray ground reflected model

Major Research areas of Glomo-sim

Location management and also channel assignment in cellular networks
Multicasting, broadcasting and also Geocasting
Handoff management also in cellular networks
Wireless MAC
Power optimization and also routing protocols modeling
Topology control and also mobility management
Wireless sensor network applications
Localization methods and also sensor coverage
Reliability and also fault tolerance issues
Sensor deployment and also tracking applications
Time synchronization issues

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