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NARVAL >> NL_I: Internet > NL_I_PathNextNode

NL_I_PathNextNode

Compute the node where a packet should be forwarded.

Calling Sequence

[J,A] = NL_I_PathNextNode(I,P)

Arguments

I :

Current node location.

P :

Connection path.

J :

Next node location.

A :

Acknowledgement.

Description

NL_I_PathNextNode computes the node J where the packet under consideration located inside the node I should be forwarded. When J coincides with the connection destination node, A rates 1. Else it is 0.

Examples

[path]=NL_F_NLPath();//path to NARVAL module
path=path+'/demos/';//folder path
load(path+'RoutingTables_topo_100.dat','pt','rt1','rt2','rt3','rt4','rt5');//loading of the network routing tables
load(path+'topo_100.graph','g');//loading of the network graph
n=100;//network size
bs=15;//constant buffer size
[nd,nf]=NL_F_RandIntNiNj(n);//generation of connection extreme nodes
L=1000;//network square area side
t=1;//current time
[probroute]=NL_I_RouteManagerInit(rt1,rt2,rt3,rt4,rt5,pt,n,L);//initialization of the route manager
network=NL_I_NetworkMatrixInit(n,bs);//initialization of the reception network matrix 
networks=NL_I_NetworkMatrixInit(n,bs);//initialization of the emission network matrix
tpmax=n*bs;//maximal quantity of packets simultaneously supported by each network matrix 
rp=NL_I_PacketManagerInit(tpmax);//initialization of the packet manager
cpmax=5;//maximal quantity of packets per connection
ct=1;//connection type selection index: creation of TCP connections
swmin=1;//initial sliding window
rtmin=1;//initial retransmission time
rtmax=50;//maximal retransmission time
p=0.90;//probability threshold
[swi,rti]=NL_I_TCPNetworkInit(n,swmin,rtmin);//initialization of the TCP parameters for each node
[networks,rp]=NL_I_ConnectionManager(nd,n,bs,cpmax,networks,rp,ct,p);//generation of new connections
[swi,rti,network,networks,rp]=NL_I_Emission2Reception(swi,rti,rtmax,network,networks,n,bs,rp,t,probroute);//emission of packets on the reception network
ind=find(network(:,$) <> 0);//TCP packets present on the network
i=ind(1);//selection of the first one
p=network(i,1);
r=rp(p,$);
path=NL_R_PathERT(evstr('rt'+string(r)),rp(p,2),rp(p,3),n);//extraction of the connection path
i//initial values
p//packet index
path//path
[j,ack]=NL_I_PathNextNode(i,path)//application of NL_I_PathNextNode

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