Papers by Teerapat Sanguakotchakorn
International journal of Computer Networks & Communications, 2021
In recent years, a new wireless network called vehicular ad-hoc network (VANET), has become a pop... more In recent years, a new wireless network called vehicular ad-hoc network (VANET), has become a popular research topic. VANET allows communication among vehicles and with roadside units by providing information to each other, such as vehicle velocity, location and direction. In general, when many vehicles likely to use the common route to proceed to the same destination, it can lead to a congested route that should be avoided. It may be better if vehicles are able to predict accurately the traffic congestion and then avoid it. Therefore, in this work, the deep reinforcement learning in VANET to enhance the ability to predict traffic congestion on the roads is proposed. Furthermore, different types of neural networks namely Convolutional Neural Network (CNN), Multilayer Perceptron (MLP) and Long Short-Term Memory (LSTM) are investigated and compared in this deep reinforcement learning model to discover the most effective one. Our proposed method is tested by simulation. The traffic sce...
QoS Provisioning Strategy for QoS-Unaware Applications in an IntServ/DiffServ Interoperating Network
Summary Due to the demands for variety of services in the Internet, the quality assurance and rel... more Summary Due to the demands for variety of services in the Internet, the quality assurance and reliability in IP network have been increasingly important. DiffServ is a scalable QoS-enabled architecture proposed to be an Internet core network. The network has to provide both new QoS-aware and legacy QoS-unaware applications with appropriate resources provisioning. Admission control is a key component to achieve this goal. However, most of the proposed admission control algorithms support only QoS-aware applications, even though most of the current Internet applications are QoS-unaware. This work proposes an admission control algorithm for providing QoS guaranteed services to QoS-aware applications and special marking to QoS-unaware applications when the network is in light-load situation. The proposed algorithm utilizes the analyzable curve-based calculation for both admission control and special marking decision. The simulation results show that the proposed algorithm can provide th...
Quality of service (QoS) provisioning in core-based tree multicast
International Conference on Information Networking, 2009
Packet size optimization for energy-efficient 2-hop in multipath fading for WBAN
2016 22nd Asia-Pacific Conference on Communications (APCC), 2016
Recently, Wireless Body Area Network(WBAN) has drawn vast interests from researchers due to its h... more Recently, Wireless Body Area Network(WBAN) has drawn vast interests from researchers due to its high potential in healthcare and medical applications. In this paper, we propose and analyse the energy efficiency model of 2-hop communication in multipath fading modeled using Rician and Rayleigh distributions. In addition, the optimal packet size to maximize energy efficiency is investigated for on-body with line-of-sight(LOS) and non-line-of-sight(NLOS), and in-body channels. The modulation techniques under consideration are Binary Phase Shift Keying(BPSK) and 16-ary quadrature amplitude position modulation(QAPM). The closed-form expressions of energy efficiency models of 1-hop, cooperative and 2-hop communications are derived. We compare the numerical results of our proposed 2-hop communication with the existing 1-hop and cooperative communications. The numerical results show that for poor channel conditions, when S-D distance is greater than threshold, our proposed 2-hop communication provides the maximum energy efficiency. Moreover, 16QAPM achieves higher energy efficiency than BPSK in in-body channel regardless of communication schemes.
Recently, Wireless Body Area Network (WBAN) has drawn vast interest to many researchers due to it... more Recently, Wireless Body Area Network (WBAN) has drawn vast interest to many researchers due to its potential in healthcare and medical fields. In this paper, we propose the energy efficiency model of Time Diversity communication in Rician and Rayleigh fading channels emphasizing the optimal packet size. The optimal packet size to maximize energy efficiency is investigated for on-body and in-body channels. Four modulation techniques are considered including the recently proposed 16-ary Quadrature Amplitude Position Modulation (QAPM). In addition, the closed-form expression of the energy efficiency model in multipath fading is derived. Here, three evaluation metrics including the energy efficiency, the normalized throughput and the average end-to-end delay are adopted and compared to the existing 1-hop and Cooperative communications as well as our previously proposed 2-hop communication. The results show that our proposed Time Diversity communication scheme outperforms the existing on...
Proceedings Iscc 2002 Seventh International Symposium on Computers and Communications, Jul 1, 2002
It is anticipated that video traffic will constitute a significant portion of the load in the ATM... more It is anticipated that video traffic will constitute a significant portion of the load in the ATM (Asynchronous Transfer Mode). In this paper, the congestion control due to transient video source has been studied. We propose an algorithm for the congestion occurring especially due to scene changes in variable bit rate video source in ATM network Firstly, video source is modeled by three-state Markov chains including the effects of scene-change at which the bit rate of video source be abruptly increased. Secondly, the scenechange in video source is detected by using the first and second-order statistic parameters (Mean, Variance and Autocorrelation Function). Finally, based on the statistic parameters, the algorithm for the congestion control is developed. We confirm the effectiveness of the proposed algorithm by numerical calculation and simulation results.
A mobile ad-hoc network (MANET) is a collection of self configuring mobile devices, capable of mo... more A mobile ad-hoc network (MANET) is a collection of self configuring mobile devices, capable of moving randomly and connected through wireless physical medium without having any fixed infrastructure. MANET technology is highly important for any kind of communications where no fixed infrastructure is available. The dynamic characteristics of MANET, has made it quite challenging to maintain connectivity and ensure Quality
A mobile ad-hoc network (MANET) is a collection of self configuring mobile devices, capable of mo... more A mobile ad-hoc network (MANET) is a collection of self configuring mobile devices, capable of moving randomly and connected through wireless physical medium without having any fixed infrastructure. MANET technology is highly important for any kind of communications where no fixed infrastructure is available. The dynamic characteristics of MANET, has made it quite challenging to maintain connectivity and ensure Quality
Recently, Wireless Body Area Network (WBAN) has drawn vast interest to many researchers due to it... more Recently, Wireless Body Area Network (WBAN) has drawn vast interest to many researchers due to its potential in healthcare and medical fields. In this paper, we propose the energy efficiency model of Time Diversity communication in Rician and Rayleigh fading channels emphasizing the optimal packet size. The optimal packet size to maximize energy efficiency is investigated for on-body and in-body channels. Four modulation techniques are considered including the recently proposed 16-ary Quadrature Amplitude Position Modulation (QAPM). In addition, the closed-form expression of the energy efficiency model in multipath fading is derived. Here, three evaluation metrics including the energy efficiency, the normalized throughput and the average end-to-end delay are adopted and compared to the existing 1-hop and Cooperative communications as well as our previously proposed 2-hop communication. The results show that our proposed Time Diversity communication scheme outperforms the existing ones in deep fading channel except for the average end-to-end delay.
Uploads
Papers by Teerapat Sanguakotchakorn