Wireless Communications and Mobile Computing

Research Article

Development and Performance Evaluation of a New Energy-Efficient Double Cluster-Head Routing (EEDCR) Protocol for Wireless Sensor Networks

CN intimation.

Assumption: The data is sent from CM to CN via a multi-hop routing route
Input: CN_INT, SN_ID //CN and CNH selected intimation to SNs
Output: CN_INT_ACK, updating of routing table (RT)
Var: ACK, NXT_NEI, CN_INTUPDATE
Begin
Every node receives the CN_INT message with their SN_ID of the sender and SN_ID of CN
CN_INT: < CN_INT, SN_ID_b, SN_ID_CN>
If (SN_ID_CN = SN_ID_a) then
Begin
Send info (ACK, SN_ID_a, NXT_NEI);
//Sent the ACK packet to CNH
End
Else if (CN_INTUPDATE = false)
Begin
Update the RT (a) by adding SN_ID_CN as CN ID and next hop as SN_ID_b;
//broadcast CN_INT packet
Broadcast (CN_INT, SN_ID_a, SN_ID_CN);
End
Else
Packet drop
End if
ACK: < ACK, SN_ID_b, NXT_NEI >
If (NXT_NEI == SN_ID_a) then
If (SN_ID_a == SN_ID_CN) then
Time out false;
Else
Check RT (SN_ID_a) and find the next hop of SN_ID_b;
//Transfer that ACK packet to the CNH
Forward (ACK, SN_ID_b, NXT_NEI);
End if
If (SN_ID_a == SN_ID_CNH) then
Time out false;
Else
Check RT (SN_ID_a) and find the next hop of SN_ID_b;
/Forward the ACK packet towards the CNH/
Forward (ACK, SN_ID_b, NXT_NEI);
End if
Else
Packet drop;
End if
End