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NARVAL >> NARVAL > NARVAL_R_FloodInit

NARVAL_R_FloodInit

Perform the initialization of the Flood algorithm.

Calling Sequence

[m,np] = NARVAL_R_FloodInit(g,ne,nr,TTL)

Parameters

g :

network graph.

ne :

source node.

nr :

destination node.

TTL :

discovery radius (Packet Time-To-Live).

m :

discovery packet storage matrix.

np :

quantity of discovery packets on the network.

Description

NARVAL_R_FloodInit initializes the Flood algorithm from the source node ne on the graph g in order to find multiple paths towards the destination node nr.

The research is limited by the maximal quantity of nodes TTL that a discovery packet can cross before its rejection by the network. The set of possible routes is stored into the matrix m ([route|arrival|TTL|route length]). The current quantity of discovery packets rates np.

Examples

n=100;//network size
L=1000;//network square area side
dmax=100;//locality radius
[g]=NARVAL_T_LocalityConnex(n,L,dmax);//generation of a random topology in respect with the Locality method. 
nl=length(g.head);//quantity of network links
nf=length(g.node_x);//real network size
[ne nr]=NARVAL_F_Random_i_j(nf)//selection of the source and destination nodes
TTL=10;//initialization of TTL
[m,np]=NARVAL_R_FloodInit(g,ne,nr,TTL);//application of NARVAL_R_FloodInit
v=[];//display the first step of the flood
for i=1:np
v=[v m(i,1:2)];
end
pr=NARVAL_G_Nodes2Path(v,g);
EC=ones(1,nl);//edge color
EB=2*ones(1,nl);//edge width
EC(pr)=5;
EB(pr)=4;
D=5*ones(1,nf);//node border
D(ne)=10;
g.node_border=D;
g.edge_color=EC;
g.edge_width=EB;
ind=1;//window index
f=NARVAL_G_ShowNodesIndex(g,ind);//graph visualization
m
np

Dependency

NARVAL_G_NodeNeighbors, NARVAL_F_Distance

Authors

Foued Melakessou

Contact

Dr. Foued Melakessou

Research Associate

Interdisciplinary Centre for Security, Reliability and Trust

Room F106

University of Luxembourg

6, rue Coudenhove Kalergi

L-1359 Luxembourg-Kirchberg

E-mail: foued.melakessou@uni.lu

Tel: (+352) 46 66 44 5346

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