Chakkaphong Suthaputchakun

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In this paper, we study the use of IEEE 802.11e for priority based safety messaging for inter-vehicle communications (IVC) in vehicular ad-hoc networks (VANET). The message priorities, which are assigned based on message urgency, are associated with different quality of service in terms of average delay and normalized throughput. We investigate the use of(More)
This paper presents a Priority based Routing Protocol (PRP) in Vehicular Ad hoc Network (VANET), according to message types. We focus mainly on a safety messaging application for safe driving in distributed environment, i.e., ad hoc manner. Broadcast based routing protocol is proposed along with priority and position enhancement to provide i) fully(More)
Environmental problems, such as pollution, become more serious year after year. One of the major causes is high fossil fuel consumption with CO2 emission. In 2009, 23 percent of CO<sub>2</sub> emission globally came from land transportation systems, which is equal to 7000 million tons of CO<sub>2</sub>. This large amount of gas pollution should be reduced(More)
This paper proposes a reliability enhancement routing protocol in Vehicular Ad hoc Network (VANET) called Priority based Routing Protocol with Reliability Enhancement (PRP-RE). Priority based Routing Protocol (PRP) was previously proposed to provide i) fully distributed routing protocol, ii) different quality of services (QoS) for different types of(More)
In this paper, we propose a multihop broadcast protocol for dissemination of time-critical emergency messages (EMs) in vehicular ad hoc networks (VANETs), where the IEEE 802.11p technology is used for communication among the nodes. The proposed trinary partitioned black-burst-based broadcast protocol (3P3B) consists of two primary mechanisms. First, a mini(More)
Communication technology for vehicles has become an important topic for research. IEEE standards including IEEE 802.11p and IEEE P1609.1-4 have emerged to provide a framework for intervehicular communication (IVC). However, due to particular characteristics of IVC, such as high mobility, unstable connectivity, and network partitioning, information routing(More)
We propose to use IEEE 802.11e in conjunction with retransmission mechanisms for priority-based Intervehicle Communication (IVC) for highway safety messaging in both vehicular infrastructure and ad hoc networks. Each IVC message, which is assigned a priority based on the safety event urgency, requires different quality of service in terms of communication(More)
In this paper we propose a secure MAC protocol for Inter-Vehicle Communication in conjunction with message priority for highway safety messaging. The protocol that can be implemented in both vehicular infrastructure and ad hoc networks provides the following security services: authentication, integrity, non-repudiation, and privacy. Using OPNET Modeler, we(More)
priority framework is also proposed to give a high priority to heavily-loaded vehicles, which consume and emit larger amount of fuel and CO2 due to breaking and stoppage. The proposed scheme aims to promote a green driving environment in the land transportation sector by increasing green light hit rate for all vehicles, especially for heavily-loaded(More)
In this paper, we study the use of IEEE 802.11e for priority based messaging in military inter-vehicle communications (IVC). In the battlefield, messages generated by military vehicles (i.e., urgent combat related messages, warning messages) have different priorities which have different performance requirements in terms of delay and reliability. The(More)