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Three-dimensional range-finding systems are widely used in various applications and fields. Especially on mobile devices and automotive, the measurement stability and reliability are strongly required under a strong ambient light like a sunlight. The projected and reflected light is often much weaker than the strong background light. This paper presents a new 3-D Range-finding system which is based...
In our previous work, we implemented WMN-GA system which is based on Genetic Algorithms (GAs) and used it for node placement problem in WMNs. In this paper, we evaluate the performance of two different distributions of mesh clients for two WMN architectures considering PDR, throughput, delay, fairness index and energy metrics. For simulations, we used ns-3, Hybrid Wireless Mesh Protocol (HWMP) and...
Vehicular Ad hoc Networks (VANETs) are an important component of the advanced information networking for inter-operable communications with a wide range of networks. In our previous work, we proposed a method of Enhanced Message Suppression Controller (EMSC) considering delayed ack for vehicular Delay/Disruption Tolerant Networking (DTN). In this paper, we evaluate the performance of our proposed...
In our previous work, we proposed a method of Message Suppression Controller (MSC) considering Vehicle-to-Vehicle (V2V) and Vehicle-to-Infrastructure (V2I) communications. In this paper, we propose an Enhanced Message Suppression Controller (EMSC) for Vehicular-Delay/Disruption Tolerant Networking (V-DTN). The simulations for two scenarios are conducted considering obstacles (buildings), where EMSC...
In previous work, we proposed a Message Suppression (MS) method for Vehicular Delay Tolerant Networking (Vehicular-DTN) considering Epidemic routing protocol. In this paper, we evaluate our proposed MS method considering three different DTN routing protocols under highly stressed environment. In order to evaluate the performance of MS method, we use Direct Delivery, Spray and Wait and Epidemic as...
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers, because of their potential use in several fields such as collaborative computing and communications. Considering mobility of the terminals, routing is a key process for operation of WMNs. In this paper, we present the implementation of a testbed for WMNs. We analyze the performance of Optimized Link...
The Delay/Disruption Tolerant Networking (DTN) aims to provide inter-operable communications with wide range of networks which have poor performance characteristics. In previous work, we proposed a message suppression method for Vehicular-DTN (VDTN) considering UDP traffic. In this paper, we evaluate the proposed method for VDTN considering TCP traffic. The simulations for two scenarios are conducted...
In this paper, we investigate the performance of HWMP, OLSR and DD protocols in a VANET crossroad scenario. The mobility patterns of vehicles are generated by means of SUMO (Simulation of Urban Mobility) and as communication protocol simulator is used NS3 (Network Simulator 3). For the simulations, we used IEEE 802.11p standard, Two Ray Ground Propagation Loss Model and sent multiple CBR flows over...
The Delay/Disruption Tolerant Networking (DTN) aims to provide inter-operable communications with wide range of networks which have poor performance characteristics. In this paper, we propose a message suppression method for Vehicular DTN (VDTN) under highly stressed environment. The simulations for two scenarios are conducted considering obstacles (buildings), where Message Suppression with Road...
The Delay/Disruption Tolerant Networking (DTN) aims to provide inter-operable communications with wide range of networks which have poor performance characteristics. In this paper, we propose a message suppression method for Vehicular DTN (VDTN). The simulations for two scenarios are conducted considering obstacles (buildings), where Message Suppression with Road Side Units (MSRs) are present or not...
In this paper, we investigate the performance of advertisement delivery scenarios of Vehicular DTN (VDTN) under highly stressed environment. The simulations for two scenarios are conducted considering obstacles (buildings), where Road Side Units (RSUs) are present or not present. We consider 802.11p standard and send bundle messages in a realistic scenario of east side of Tokyo station area in Japan...
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-SA and WMN-GA systems which are based respectively on Simulated Annealing (SA) and Genetic Algorithms (GAs) to find an optimal...
Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-GA system which is based on Genetic Algorithms (GAs) to find an optimal location assignment for mesh routers. In this paper,...
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