Background: MANET is a constrained environment having limited energy, restricted
bandwidth, and unstable wireless connectivity, etc. It creates a high demand to design an efficient
QoS routing protocol having a multi-criteria metric to make efficient routing decisions.
Aim: The main aim of QoS based routing protocol EB-OLSR (Energy efficient and Bandwidth
aware Optimized Link State Routing) is to achieve enhanced aggregate network throughput.
Which is acquired by selecting QoS qualified efficient nodes to transmit data packets. EB-OLSR
set out analogous efficient mobile nodes for routing by applying newly defined multi-criteria metric
EPNI (Efficiency Parameters for Node Indexing) which estimates the node’s efficiency index
on the basis of four QoS parameters that are unconsumed power, slothful period, queue length and
Methods: We obtained a single node index for each mobile node through EPNI metric based on
residual battery, node idle time, packet queue length and residual bandwidth.
Results: EB-OLSR produced aggregate network throughput enhancement of 574 bits per second
in comparison of MP-OLSR and 390.66 bits per second in comparison to MBQA-OLSR. Average
End-to-End Delay for EB-OLSR is 0.41, 0.16 times less and Packet Delivery Ratio enhances
30.74%, 9.5% respectively.
Conclusion: Experimental results proved that the EB-OLSR is an energy-efficient and bandwidth
aware optimized link-state routing protocol, which successfully meets the main aim of this study
i.e. throughput enhancement of mobile ad-hoc network. The EPNI metric is the major strength of
the work which is used to get a single-valued weighted sum of multiple criteria.