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Author: search.filters.author.Kirdpipat, Putthiphong

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    Location-based routing scheme with adaptive request zone in mobile ad hoc networks
    (2013-01-01)
    Kirdpipat, Putthiphong
    ;
    Thipchaksurat, Sakchai
    Route discovery process is a major mechanism in the most routing protocols in Mobile Ad Hoc Network (MANET). Routing overhead is one of the problems caused by broadcasting the route discovery packet. To reduce the routing overhead, the location-based routing schemes have been proposed. In this paper, we propose our scheme called Location-based Routing scheme with Adaptive Request Zone (LoRAReZ). In LoRAReZ scheme, the size of expected zone is set adaptively depending on the dis-tance between source and destination nodes. Computer simulation has been conducted to show the effectiveness of our propose scheme. We evalu-ate the performances of LoRAReZ scheme in the terms of packet delivery fraction (PDF), routing overhead, average end-to-end delay, throughput, packet collision, average hop count, average route setup time, and power consumption. We compare those performance metrics with those of Lo-cation Aided Routing (LAR) and Location Aware Routing Protocol with Dynamic Adaptation of Request Zone (LARDAR) protocols. The simula-tion results show that LoRAReZ can provide all the better performances among those of LAR and LARDAR schemes. © 2013 The Institute of Electronics, Information and Communication Engineers.
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    Impact of mobility on Location-based routing with adaptive request zone in mobile ad hoc networks
    (2012-10-02)
    Kirdpipat, Putthiphong
    ;
    Thipchaksurat, Sakchai
    In this paper, we present the impact of mobility on our scheme called Location-based Routing with Adaptive Request Zone (LoRAReZ). In LoRAReZ, the size of expected zone and request zone are set adaptively based on the distance between the source node and destination node. We evaluate the impact of mobility on the performance of LoRAReZ in terms of packet delivery fraction, routing overhead, end-to-end delay, throughput and power consumption by comparing with those of the traditional Ad Hoc On-Demand Distance Vector (AODV) and Modified Ad Hoc On-Demand Distance Vector (MAODV). The results show that LoRAReZ can provide the better performance than those of AODV and MAODV. © 2012 IEEE.
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    System control design via AC line for security system
    (2005-12-01)
    Kirdpipat, Putthiphong
    ;
    Mitatha, Somsak
    ;
    Thipchaksurat, Sakchai
    In this paper, we present the system control design via AC line for the security system. The system comprises houses and control node such as center control, node control and home control which are connected as the two levels network called master-slave model. Our system can support the data rate up to 9,600 bits per second with the maximum distance at 1,200 meters. The transmission data are encrypted using DES algorithm. Moreover, the system can connect to the Internet by using web service protocol and only one IP address is needed for our system. The measurement of electricity can be done automatically. We design the protocol for controlling all the electric equipments via AC line with FSK modulation technique, which can support the data rate up to 250 bits per second with the distance at 300 meters. We evaluate the performance of our system by means of experiment. The results showed that we can achieve 99.99 and 99.92 percents for the transmission without error on the network and AC line, respectively. We also examine the signal attenuation depends on the number of load, load type and position of load between transmitter and receiver. © 2005 IEEE.