Use of longer routing messages to filter out low-quality link information in MANET

In this paper, we propose a simple approach to using longer Hello messages to enhance network performance as an alternative of using link quality based routing metrics in MANET. In this proposal, routing nodes use longer routing messages to filter out the information from neighboring nodes about low-quality links. For doing so, we modified the structure of routing messages of two well-known proactive routing protocols, named DSDV and OLSR, to enable routing nodes to transmit longer Hello messages. Our simulation results show that simple use of longer Hello message improves the packet delivery ratio, still with acceptable routing message overhead.