yonghoon

How to Install LessTif or GeomView on Ubuntu

2008-09-05T18:08:31Z

sudo apt-get install geomview

If you get this message, "No package 'gtk+-2.0' found",

gtk+-2.0 = libgtk2.0-dev

sudo apt-get install libgtk2.0-dev

How to Install NS-2 on Fedora

2008-08-27T01:39:03Z

STEP 1

From terminal login as super user and do the following.(internet must also be connected in order to install the package dependencies.

yum install autoconf
yum install automake
yum install gcc-c++
yum install libX11-devel
yum install xorg-x11-proto-devel
yum install libXt-devel
yum install libXmu-devel

STEP 2

From terminal download ns-allinone-2.30 and type the following commands

$ wget http://www.isi.edu/nsnam/dist/ns-allinone-2.30.tar.gz
$ tar -xzf ns-allinone-2.30.tar.gz
$ cd ns-allinone-2.30.tar.gz
$. /install

STEP 3

Now go to /etc folder and type

gedit ~/.bashrc

Add the following lines to the end of it. Remember replace “/usr/local/” by your installation path like “/home/kazim”. And accordingly also change the version numbers. This is for ns 2.30.

# LD_LIBRARY_PATH
OTCL_LIB=/usr/local/ns-allinone-2.30/otcl-1.12
NS2_LIB=/usr/local/ns-allinone-2.30/lib
X11_LIB=/usr/X11R6/lib
USR_LOCAL_LIB=/usr/local/lib
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_LIB:$USR_LOCAL_LIB

# TCL_LIBRARY
TCL_LIB=/usr/local/ns-allinone-2.31/tcl8.4.14/library
USR_LIB=/usr/lib
export TCL_LIBRARY=$TCL_LIB:$USR_LIB

# PATH
XGRAPH=/usr/local/ns-allinone-2.30/bin:/usr/local/ns-allinone-2.30/tcl8.4.13/unix:/usr/local/ns-allinone-2.30/tk8.4.13/unix
NS=/usr/local/ns-allinone-2.30/ns-2.30/
NAM=/usr/local/ns-allinone-2.30/nam-1.12/
PATH=$PATH:$XGRAPH:$NS:$NAM

Let it take effect immediately

source ~/.bashrc

Note: the step described above is important; otherwise, you cannot run ns successfully.
or you can restart your X windows.i.e. logout and then login, or reboot your system, to make it work.)

Now, the installation has been completed. If you try:
$ ns

Then a “%” will appear on the screen.type “exit” to quit the mode and back to “$”

If you miss out step 1 you may get the following errors

Build XGraph-12.1
============================================================
loading cache ./config.cache
checking for a BSD compatible install… /usr/bin/install -c
checking whether build environment is sane… yes
checking whether make sets ${MAKE}… yes
checking for working aclocal… missing
checking for working autoconf… missing
checking for working automake… missing
checking for working autoheader… missing
checking for working makeinfo… missing
checking if malloc debugging is wanted… no
checking for gcc… no
checking for cc… no
configure: error: no acceptable cc found in $PATH
make: *** No targets specified and no makefile found. Stop.
Can not create xgraph; But xgraph is an optional package, continuing…

If you miss step 3

At the prompt when you type ns you will get
Ns command not found

Source: http://www.edaboard.com/ftopic297674.html

How to Install Qt3 in Ubuntu

2008-08-15T18:24:50Z

sudo apt-get install libqt3-mt-dev qt3-designer qt3-dev-tools

[ns-2] How to assign a different trasnmission power (range) to each node

2008-06-18T22:23:14Z

# attach a new Agent/MessagePassing/Flooding to each node on port $MESSAGE_PORT
for {set i 0} {$i < $num_nodes} {incr i} {
    set a($i) [new Agent/MessagePassing/Flooding]
    $n($i) attach $a($i) $MESSAGE_PORT
    $a($i) set messages_seen {}

    set if_($i) [$n($i) set netif_(0)]

}

# then you can set the transmission power for each node individually :
for {set i 0} {$i < 10} {incr i} {

    if { $i < 5} {
        # transmission range: 40m
        $if_($i) set Pt_ 8.5872e-4
    } else {
        # transmission range: 100m
        $if_($i) set Pt_ 7.214e-3
    }
}

[ns2] Adjusting Transmission Range

2008-06-18T03:51:37Z

from http://blog.empas.com/blhole/read.html?a=10042170

$NS_HOME/indep-utils/propagation/threshold.cc

를 다음 명령으로 컴파일한다.

$ g++ -o threshold threshold.cc

Phy/WirelessPhy set RXThresh_ 3.652e-10

위의 기본 RXThresh_값을 기준으로 하여 거리에 대한 Pt를 결정한다.

예제

$ ./threshold -m TwoRayGround -Pt 7.214e-3 100m
distance = 100
propagation model: TwoRayGround

Selected parameters:
transmit power: 0.007214
frequency: 9.14e+08
transmit antenna gain: 1
receive antenna gain: 1
system loss: 1
transmit antenna height: 1.5
receive antenna height: 1.5

Receiving threshold RXThresh_ is: 3.65209e-10

-Pt 0.11542 200m

-Pt 0.58432 300m

        // Assume AT&T's Wavelan PCMCIA card -- Chalermek
        //      Pt_ = 8.5872e-4; // For 40m transmission range.
        //      Pt_ = 7.214e-3; // For 100m transmission range.

// Pt_ = 1.7615e-2 ;# 125m
// Pt_ = 0.2818; // For 250m transmission range.

$NS2/mac/wireless-phy.cc

# Initialize the SharedMedia interface with parameters to make
# it work like the 914MHz Lucent WaveLAN DSSS radio interface
Phy/WirelessPhy set CPThresh_ 10.0
Phy/WirelessPhy set CSThresh_ 1.559e-11
Phy/WirelessPhy set RXThresh_ 3.652e-10
Phy/WirelessPhy set bandwidth_ 2e6
Phy/WirelessPhy set Pt_ 0.28183815
Phy/WirelessPhy set freq_ 914e+6
Phy/WirelessPhy set L_ 1.0
Phy/WirelessPhy set debug_ false

위의 값들중에서 Pt_ (transmission power)만을 변경하여 간단하게 transmission range를 조정할 수 있다.

[Article] Crash Warning System Monitors Nearby Traffic And Warns Of Possible Collisions

2008-05-28T20:29:28Z

Crash Warning System Monitors Nearby Traffic And Warns Of Possible Collisions

ScienceDaily (2008-01-13) -- Scientists have demonstrated in the lab a collision warning system for cars that could alert the driver several seconds in advance of an imminent impact. The device could save thousands of lives and usher in the first steps towards the 'connected car'. It knows its location, can talk to other cars and can tell the future. Are we entering the era of truly automated cars? ... > read full article

VANET Projects

2008-05-28T20:25:26Z

» CarTel
» EPFL Vechicular Networks Security Project
» CAR-2-CAR Communication Consortium
» FleetNet
» CarTALK 2000
» DynaMIT
» Network-on-Wheels
» MobEyes
» General Motors Collaborative Research Lab/CMU
» PATH
» CITranS
» C3
» VISTA
» SOTIS
» DieselNet
» INVENT (NJIT)

Connecting with Minicom and Transferring files to Gumstix

2008-04-21T06:19:24Z

Connecting with Minicom

First, configure Minicom
1. As root, run minicom -s
2. Under "Serial Port Setup" choose the following
  - Serial Device: /dev/ttyUSB0
    If you are not sure which tty is connected, "dmesg" after unplug or plug it.
  - Bps/Par/Bits: 115200 8N1
  - Hardware Flow Control: No (this is important)
  - Software Flow Control: No
3. Hit [ESC] until you return to the main configuration menu
4. Select "Save Setup as dfl" to save the default setup
5. Select "Exit from Minicom" to exit the program
Connect the serial cable to the serial port on your computer and to the serial port on the Gumstix
Run Minicom again with minicom -o. This tells it to skip all the modem initialization strings, which are unnecessary when communicating with the Gumstix. You may need to do this as root if your normal login doesn't have permission to access the serial port.
Plug the power adapter into the power jack of the Gumstix. When connected and powered, you should see a message from U-Boot followed by the normal Gumstix boot sequence in the minicom window.
Log in for the first time with username root and password gumstix
When finished, you can exit Minicom by typing [CTRL-A] then pressing Q. This exits without running the normal modem reset sequence, which will only send garbage to the Gumstix

Transferring files

To send a file to the Gumstix:

Run 'rz' on the Gumstix. No parameters are needed, generally.
From the terminal, send a file using ZModem. In Minicom, this is done with [Ctrl-A] and then S, which brings up a file selection dialog.

To receive a file from the Gumstix:

Transmit the file(s) using 'sz', specifying them as arguments.
The terminal, ideally, will detect and accept the transfer automatically.

if you encounter a "Failure executing protocol" error, trying to send a file with Zmodem under minicom, you should install a Y/Z modem. apt-get install lrzsz

from http://docwiki.gumstix.org/Connecting_via_Serial_-_Linux#Connecting_with_Minicom

How to Install Buildroot for Gumstix

2008-04-21T04:30:39Z

sudo apt-get install build-essential libncurses5-dev bison flex texinfo zlib1g-dev gettext libssl-dev libc6-dev make g++ gcc automake1.9 subversion libpng12-dev libjpeg62-dev libfreetype6-dev pkg-config fbset libdbus-1-dev libdbus-glib-1-2 libdbus-glib-1-dev libglib-2.0-dev lrzsz mtd-tools

problem with libglib-2.0-dev!
svn co -r1541 http://svn.gumstix.com/gumstix-buildroot/trunk gumstix-buildroot
username:root, password:root
cd gumstix-buildroot/
make defconfig
select target architecture & cpu type (Xscale for connex 400 xm)
make

Gumstix: A Newbie' First Experience
http://www.robomontreal.com/Gumstix_Newbie.php

Install Ruby on Ubuntu

2008-04-10T09:05:26Z

https://help.ubuntu.com/community/RubyOnRails

How to Install NS-2 on Ubuntu

2008-04-10T08:19:36Z

from http://alkautsarpens.wordpress.com/2008/02/05/install-ns231-for-ubuntu-gutsy-710/

$ tar -xzvf ns-allinone-2.33.tar.gz
$ cd ns-allinone-2.33
$ sudo apt-get install build-essential autoconf automake libxmu-dev

Now run this command :
$./install

$ gedit ~/.bashrc

    Add the following lines to the end of it. Remember replace
    “/home/networklab/ns/” by something like “/home/yourname/”
    ——————————————————————————————–
    # LD_LIBRARY_PATH
    OTCL_LIB=/home/networklab/ns/ns-allinone-2.33/otcl-1.13
    NS2_LIB=/home/networklab/ns/ns-allinone-2.33/lib
    X11_LIB=/usr/X11R6/lib
    USR_LOCAL_LIB=/usr/local/lib
    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$OTCL_LIB:$NS2_LIB:$X11_
    LIB:$USR_LOCAL_LIB

    # TCL_LIBRARY
    TCL_LIB=/home/networklab/ns/ns-allinone-2.33/tcl8.4.14/library
    USR_LIB=/usr/lib
    export TCL_LIBRARY=$TCL_LIB:$USR_LIB

    # PATH
    XGRAPH=/home/networklab/ns/ns-allinone-2.33/bin:/your/path/
    ns-allinone-2.33/tcl8.4.14/unix:/your/path/ns-allinone-2.33/tk8.4.14/unix
    NS=/home/networklab/ns/ns-allinone-2.33/ns-2.33/
    NAM=/home/networklab/ns/ns-allinone-2.33/nam-1.13/
    PATH=$PATH:$XGRAPH:$NS:$NAM
    ————————–

Let it take effect immediately:
$ source ~/.bashrc

Note: if ns unsuccessfully. you can restart your X windows, or reboot your system, to make it work Now,the installation has been completed. then try:

$ ns

Then a “%” will appear on the screen.type “exit” to quit the mode and back to “$”

Validation :
$ cd ns-2.33
$ ./validate

awk tutorials and examples

2008-04-01T06:53:19Z

Examples
http://sparky.rice.edu/~hartigan/awk.html

[scrap] Network Simulator for Wireless

2008-03-31T05:10:56Z

http://www.winlab.rutgers.edu/~zhibinwu/html/network_simulator_2.html

Introduction

Ns-2 is a widely used tool to simulate the behavior of wired and wireless networks. Useful general information can be found at

Official ns-2 website (http://www.isi.edu/nsnam/ns/ )
An ns-2 Documentation generated by Doxygen is in http://www-rp.lip6.fr/ns-doc/ns226-doc/html/index.htm
Two good tutorials about ns-2.
Wireless tutorial by Marc Greis
ns by example
My presentation: ns2 tutorial for wireless simulation WINLAB, June 2003
My Lecture : Introduction to ns2 ECE 330:543 Class Lecture, Oct. 2007
Another good tutorial of ns-2

Installation & Debug

Install ns-2.27 in Red Hat Linux
Install ns 2.28 in Debian with gcc 4.0 or above
Debug ns-2 with gdb

Simulation Configuration

Physical Layer

MAC layer

Routing

Summary of ns-2 bugs for wireless simulation

channel.cc List-based improvement causes "Segmentation Fault".
mac-802_11.cc: Bug in Defer timer causes "Event UID not valid!".
dsdv.cc: double IP header bug.

How to use Google Maps offline?

2008-03-30T00:20:52Z

How Google Maps Works
http://www.codeproject.com/KB/scrapbook/googlemap.aspx
GPS Visualizer
http://www.gpsvisualizer.com/
KML for Google Earth and Maps
http://code.google.com/apis/kml

Linux Command Reference

2008-03-29T21:10:29Z

Reference Sites

Quick Command Reference
http://www.pixelbeat.org/cmdline.html
Debian Package Management
http://qref.sourceforge.net/Debian/reference/ch-package.en.html
Vi Reference Card
http://www.digilife.be/quickreferences/QRC/Vi%20Reference%20Card.pdf
http://tnerual.eriogerg.free.fr/vim.html
Regular Expression
http://gnosis.cx/publish/programming/regular_expressions.html
http://www.linuxforums.org/applications/demystifying_regular_expressions.html

Frequently Used Cases

Find a text within files
command: grep -R <text> *
example: grep -R korea *

Solution to Broadcast to all neighbors in NS-2

2008-03-28T05:41:57Z

[ns] Solution to Broadcast to all neighbors
http://mailman.isi.edu/pipermail/ns-users/2000-June/009635.html

Wireless Flooding in ns-2
http://yans.inria.fr/code/ns-2/?diff/1056ff50e303/tcl/ex/wireless-flooding.tcl

Unicast and Brocast in Ns-2

2008-03-28T03:50:19Z

http://nuraini.net/2007/09/16/unicast-an

d-broadcat-packet-on-ns2/

Those following code are some example code for sending packet unicast and broadcast on NS2.

void protocol::unicast(Packet *p, nsaddr_t destination)
 {
 hdr_cmn* hdrcmn = HDR_CMN(p);
 hdr_ip* iphdr = HDR_IP(p);
 // set all the necessary things for the common header
 hdrcmn->next_hop_ = destination;
 hdrcmn->prev_hop_ = this->addr();
 hdrcmn->direction() = hdr_cmn::DOWN;
 // take a look its name on packet.h
 hdrcmn->ptype() = PT_PROTOCOLNAME;
 hdrcmn->addr_type() = NS_AF_INET;
 // setting the ip header
 iphdr->saddr() = this->addr();
 iphdr->sport() = 254; // 1-254
 iphdr->daddr() = destination;
 iphdr->dport() = 254; // 1-254
 iphdr->ttl() = 32;
 Scheduler::instance().schedule(ll, p, 0.0);
 }

void protocol::broadcast(Packet *p)
 {
 hdr_cmn* hdrcmn = HDR_CMN(p);
 hdr_ip* iphdr = HDR_IP(p);
 // set all the necessary things for the common header
 hdrcmn->next_hop_ = IP_BROADCAST;
 hdrcmn->prev_hop_ = this->addr();
 hdrcmn->direction() = hdr_cmn::DOWN;
 // setting the ip header
 iphdr->saddr() = this->addr();
 iphdr->sport() = 254; // 1-254
 iphdr->daddr() = IP_BROADCAST;
 iphdr->dport() = 254; // 1-254
 iphdr->ttl() = 32;
 Scheduler::instance().schedule(ll, p, 0.0);
 }

The above codes can be called anywhere on sourcecode.cc (anyname.cc). For example :

int protocol::command(int argc, const char*const* argv)
 {
 if (argc == 4) {
 if (strcmp(argv[1], "sendData“) == 0)
 {
 Packet* newpkt = allocpkt();
 //some packet configuration
 this->broadcast(newpkt);
 return (TCL_OK);
 }
 }

When the node will receive it ?
We should make recv procedure.

void protocol::recv(Packet* pkt, Handler*) { hdr_cmn* hdrcmn = HDR_CMN(pkt); //Access the common header for the received packet: hdr_ip* hdrip = HDR_IP(pkt); // Access the IP header for the received packet: cout << "node " << this->addr() << "received from node " << hdrcmn->prev_hop_; }