This paper presents a transparent multi-level routing scheme, named MORHE, that improves the scalability of the OLSR protocol by exploiting the heterogeneous nature of nodes in the network. While ad hoc networks have been an active research topic over the past few years, the majority of the studies have focused on the homogeneous nature of the network. In our work we try to take a different app...

The Hierarchical Optimized Link State Routing (HOLSR) protocol enhances the scalability and heterogeneity of traditional OLSR-basedMobile AdHoc Networks (MANETs). It organizes the network in logical levels and nodes in clusters. In every cluster, it implements the mechanisms and algorithms of the original OLSR to generate and to distribute control traffic information. However, the HOLSR protoco...

The performance of a protocol in MANETs can be measured using some parameters, which also includes simulation environment like campus or military. This research is done in the campus environment using the simulation parameters such as area size, packet size, time of simulation, UDP connection...etc for measuring the performance matrices such as sent, received and dropped rate of CBR data packet...

In mobile ad hoc networks, the absence of infrastructure and the consequent absence of authorization facilities impede the usual practice of establishing a practical criterion to distinguishing nodes as trusted and distrusted. Since all nodes in the MANETs would be used as router during working period, secure routing protocols have vital rule in the security of the network. So evaluating the pe...

This work proposes the Wireless-mesh-network Proactive Routing (WPR) protocol for wireless mesh networks, which are typically employed to provide backhaul access. WPR computes routes based on link states and, unlike current routing protocols, it uses two algorithms to improve communications in wireless mesh networks taking advantage of traffic concentration on links close to the network gateway...

In the design of mobile ad hoc networks, a challenging problem is how to route information reliably and efficiently from one node to another in moderate to high level of mobility. Due to mobility, limited residual energy of the node, selection of stable and durable path for the communication is the challenge. Also remaining queuing capacity is also affected on the packet loss. Many proposals ha...

To support QoS routing, accurate state information (such as energy level and queue length) should be available and manageable. But due to bandwidth constraints, communication costs, high loss rate and the dynamic topology of MANETs, getting and keeping up-to-date state information is a very complex task, if at all feasible. In this work, we use Optimized Link State Routing (OLSR) as the underly...

Trends in fourth generation (4G) wireless networks are clearly identified by the full-IP concept where all traffic (data, control, voice and video services, etc.) will be transported in IP packets. Many proposals are being made to enhance IP with the functionalities necessary to manage the mobility of nodes, so that networks can provide global seamless roaming between heterogeneous wireless and...

Mobile ad Hoc networks are capable of making dynamic changes in any topology. The characteristic which differentiates MANETs from other networks is that it is capable of changing its location. The results of the surveys over the last 5 years have shown that it can overcome congestion and communication barrier between two nodes. This study compares the performance of two different multi hop ad h...

Ad hoc wireless networks have enormous commercial and military potential because of their self-organizing capacity and mobility support. However, some specificities of these networks such as radio interferences and limited resources make more complex the quality of service (QoS) support. Indeed, on the one hand, the bandwidth offered to users is strongly affected by radio interferences. On the ...