Teerapat Sanguankotchakorn1
, Sanika K.Wijayasekara2 and Sugino Nobuhiko3
1Telecommunications Field of Study, School of Engineering and Technology,
Asian Institute of technology, Pathumthani, Thailand
2
Faculty of Engineering, Chulalongkorn University, Bangkok, Thailand
3
Interdisciplinary Graduate School of Science and Engineering,
Tokyo Institute of Technology, Japan
ABSTRACT
The routing protocols play an important role in Mobile Ad-Hoc Network (MANET) because of the
dynamically change of its topology. Optimized Link State Routing (OLSR), unawareness of Quality of
Service (QoS) and power-consumed protocol, is an example of a widely-used routing protocol in MANET.
The Multi-Point Relays (MPR) selection algorithm is very crucial in OLSR. Therefore, firstly, we propose a
heuristic method to select the best path based on two parameters; Bit Error Rate (BER) derived from the
physical layer and Weighted Connectivity Index (CI) adopted from the network layer. This can be done via
the cross-layer design scheme. This is anticipated to enhance the performance of OLSR, provide QoS
guarantee and improve the power consumption. The performances of the proposed scheme are investigated
by simulation of two types of traffics: CBR and VBR (MPEG-4), evaluated by metrics namely Throughput,
Packet Delivery Ratio (PDR), Average End-to-End Delay, Control Overhead and Average Total Power
Consumption.We compare our results with the typical OLSR and OLSR using only Weighted CI. It is
obvious that our proposed scheme provides superior performances to the typical OLSR and OLSR using
only Weighted CI, especially, at high traffic load.
KEYWORDS
Mobile Ad-hoc Network (MANET), OLSR, Bit Error Rate (BER), Weighted Connectivity Index, Quality of Service (QoS)
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