Performance analysis of OLSR and BATMAN protocols considering link quality parameter

In this paper, we present the implementation and analysis of our testbed considering the link quality window size (LQWS) parameter of optimized link state routing (OLSR) and better approach to mobile ad-hoc networking (B.A.T.M.A.N.) protocols. We investigate the effect of mobility in the throughput of a mobile ad-hoc network (MANET). The mobile nodes move toward the destination at a regular speed. When the mobile nodes arrive at the corner, they stop for about three seconds. In our experiments, we consider two cases: only one node is moving (mobile node)and two nodes (intermediate nodes) are moving at the same time. We assess the performance of our testbed in terms of throughput, round trip time, jitter and packet loss. From our experiments, we found that throughput of TCP was improved by reducing LQWS.Peer ReviewedPostprint (published version

Performance Comparison of BATMANd and BATMAN-adv

The B.A.T.M.A.N routing algorithm is a routing solution for ad hoc wireless networks. Two of these branches, Batmand and Batman-adv are the most commonly used as the default routing protocols on the Mesh Potato's (MP). The MPs are devices that use VoIP to communicate over the air with each other. These devices are the most common use of the Batman routing protocols and there are no performance tests conducted on the devices. Furthermore, there are no performance tests that can conclusively tell us which of the two branches is the better one and should serve as the first choice on the MPs. This paper highlights the differences between the protocols theoretically and describes a testbed in order to measure performances of the routing protocols

Low-cost wireless mesh communications based on openWRT and voice over internet protocol

Technology makes it easier for us to communicate over a distance. However, there are still many remote areas that find it difficult to communicate. This is due to the fact that communication infrastructure in some areas is expensive to build while the profit will be low. This paper proposes to combine voice over internet protocol (VoIP) over mesh network implemented on openWRT router. The routers are performing mesh functions. We set up a VoIP server on a router and enabled session initiation protocol (SIP) clients on other routers. Therefore, we only need routers as a means of communication. The experiment showed very good results, in the line-of-sight (LOS) condition, they are limited to reception distances up to 145 meters while in the non-line-of-sight (NLOS) condition, they are limited to reception distances up to 55 meters

Mobility effects of wireless multi-hop networks in indoor scenarios

A Mobile Ad hoc Network (MANET) is a collection of wireless mobile terminals that are able to dynamically form a temporary network without any aid from fixed infrastructure or centralized administration. In recent years, MANETs are continuing to attract the attention for their potential use in several fields such as military activities, rescue operations and time-critical applications. In this paper, we present the implementation and analysis of our implemented wireless multi-hop network testbed considering the Optimized Link State Routing (OLSR) protocol for wireless multi-hop networking. We investigate the effect of mobility and topology changing in MANET. We study the impact of best-effort traffic for non line of sight communication. In this work, we consider three models: stationary, mobility and non line of sight communication models. We assess the performance of our testbed in terms of throughput and packet loss. From the experimental results, we found that OLSR has not a good performance when the relay node is moving. Also, the performance deteriorates when the CBR is higher.Peer ReviewedPostprint (published version

A Lightweight Ad-hoc ICT Infrastructure for Post-Disaster Situations

One cannot expect communication resources to be readily available at disaster- affected site. Moreover, Information and Communication Technology (ICT) rescue supplies tends to be for heavy-duty and limited in quantity. This affects the information exchange and may cause delay in rescue operation, which is highly undesirable. In this thesis, we aim to utilize the time between rescue workers reaching the disaster-affected site and when the Internet connection is made available. The idea is to start the local communication and information exchange without waiting for the recovery of Internet connection. We propose a self-contained software package in the form of Linux Live USB flash drive.Our solution requires that Linux Live USB flash drives, laptop computers and external USB Wi-Fi NICs are provided to rescue workers as rescue supplie

Performance analysis of OLSR and BATMAN protocols considering link quality parameter

In this paper, we present the implementation and analysis of our testbed considering the link quality window size (LQWS) parameter of optimized link state routing (OLSR) and better approach to mobile ad-hoc networking (B.A.T.M.A.N.) protocols. We investigate the effect of mobility in the throughput of a mobile ad-hoc network (MANET). The mobile nodes move toward the destination at a regular speed. When the mobile nodes arrive at the corner, they stop for about three seconds. In our experiments, we consider two cases: only one node is moving (mobile node)and two nodes (intermediate nodes) are moving at the same time. We assess the performance of our testbed in terms of throughput, round trip time, jitter and packet loss. From our experiments, we found that throughput of TCP was improved by reducing LQWS.Peer Reviewe

BATSEN: Modifying the BATMAN Routing Protocol for Wireless Sensor Networks

The proliferation of autonomous Wireless Sensor Networks (WSN) has spawned research seeking power efficient communications to improve the lifetime of sensor motes. WSNs are characterized by their power limitations, wireless transceivers, and the converge-cast communications techniques. WSN motes use low-power, lossy radio systems deployed in dense, random topologies, working sympathetically to sense and notify a sink node of the detectable information. In an effort to extend the life of battery powered motes, and hence the life of the network, various routing protocols have been suggested in an effort to optimize converge-cast delivery of sensor data. It is well known that reducing the overhead required to perform converge-cast routing and communications reduces the effects of the primary power drain in the mote, the transceiver. Furthermore, WSNs are not well protected; network security costs energy both in computation and in RF transmission. This paper investigates the use of a Mobile Ad-hoc Networking (MANET) routing protocol known as B.A.T.M.A.N. in WSN. This thesis proposes that the features of B.A.T.M.A.N. in the MANET realm may prove beneficial to the WSN routing domain; and that slight modifications to the routing technique may prove beneficial beyond current protocol technologies. The B.A.T.M.A.N. variant will be compared against the contemporary LEACH WSN routing protocol to discern any potential energy savings