Proceedings of the 9th International Conference on Advances in Mobile Computing and Multimedia - MoMM '11, 2011
Abstract There exists a plethora of work about information dissemination and routing in Wireless ... more Abstract There exists a plethora of work about information dissemination and routing in Wireless Sensor Networks (WSNs), but no work tries to aggregate all this research and connect it all together. This paper, however, reviews WSN research and presents a two-...
2009 6th IEEE Consumer Communications and Networking Conference, 2009
There is a large body of work addressing information storage, reduction, and dissemination in Wir... more There is a large body of work addressing information storage, reduction, and dissemination in Wireless Sensor Networks (WSNs), but there seems to be no contribution giving a survey of this literature. In this paper we take on such a challenge and review previous WSN research and further presents a framework that we use for classifying the different proposed approaches and techniques. The framework is structured into 3 tiers: 1) routing and network infrastructure, 2) logical network infrastructure, and 3) information storage and processing. The paper, however, mainly focuses on tier-2 and tier-3. We also discuss future visions and challenges within the WSN community.
The success of high-level programming models in Wireless Sensor Networks (WSNs) is heavily depend... more The success of high-level programming models in Wireless Sensor Networks (WSNs) is heavily dependent on factors such as ease of programming, code well-structuring, degree of code reusability, and required software development effort. Component-based programming has been recognized as an effective approach to meet such requirements. Most of componentization efforts in WSNs were ineffective due to various reasons, such as high resource demand or limited scope of use. In this paper, we present REMORA, a new approach to practical and efficient component-based programming in WSNs. REMORA offers a well-structured programming paradigm that fits very well with resource limitations of embedded systems, including WSNs. Furthermore, the special attention to event handling in REMORA makes our proposal more practical for WSN applications, which are inherently event-driven. More importantly, the mutualism between REMORA and underlying system software promises a new direction towards separation of concerns in WSNs. Our evaluation results show that a well-configured REMORA application has an acceptable memory overhead and a negligible CPU cost.
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia - MoMM '08, 2008
The paper first gives an overview of the required functions for providing Internet connectivity a... more The paper first gives an overview of the required functions for providing Internet connectivity and mobility management for mobile ad-hoc networks (MANETs). Internet gateway selection is one of these functions. Since multiple Internet gateways might exist on the same MANET domain, a hybrid metric for Internet gateway selection is proposed as a replacement of the shortest hop-count metric. The hybrid metric provides load-balancing of intra/inter-MANET traffic. Simulation results show that ad-hoc routing protocols, using our proposed metric get better performance in terms of packet delivery ratio and transmission delay, at the cost of slightly increased signalling overhead.
2009 International Conference on Advanced Information Networking and Applications, 2009
An increasing number of research efforts on wireless sensor networks (WSNs) are now considering d... more An increasing number of research efforts on wireless sensor networks (WSNs) are now considering dynamic environments with heterogeneous sensor devices. Most of this research considers data, control, and management issues separately and not clearly within a common architecture. This paper presents our development of an architecture, namely DCM-Arch, to address these issues together. The architecture consists of three-planes of functionalities (in the vertical dimension): 1) data, 2) control, and 3) management; and fourtiers of network infrastructures (in the horizontal dimension): 1) routing and network infrastructure, 2) logical network infrastructure, 3) adaptation middleware, and 4) componentbased software application. The data plane handles the information storage, reduction, and dissemination in WSNs. The control plane deals with the lightweight sensor adaptation and reconfiguration middleware to cope with the dynamic changes of the environment. Finally, the management plane provides the context management functions, e.g. for collaboration and reasoning, to allow sensors, coordinators, and sinks to make good decisions about adaptation and reconfiguration. While the vertical dimension describes the functionalities of DCM-Arch, its four-tiers provide the required facilities to achieve those functionalities.
Proceedings of the 13th International Conference on Information Integration and Web-based Applications and Services - iiWAS '11, 2011
Mobile ad-hoc networks (MANETs) have attracted extensive research interests over the past several... more Mobile ad-hoc networks (MANETs) have attracted extensive research interests over the past several years due to its multi-hop, self-organized characteristics, leading to a new application domain: instant and fast-deployed ad-hoc services without any network infrastructures. Many testbeds for protocol evaluation have been designed and developed toward this trend. In this paper, we review the pros and cons of each testbed
International Journal of Web Information Systems, 2009
Purpose -The purpose of this paper is to describe the required functionalities on providing Inter... more Purpose -The purpose of this paper is to describe the required functionalities on providing Internet connectivity and mobility management for mobile ad-hoc networks (MANETs), present discovered problems such as inconsistent contexts, and provide the corresponding solutions. It also provides a hybrid metric for the load-balance of intra/inter-MANET traffic over multiple Internet gateways.
Proceedings of the 9th International Conference on Advances in Mobile Computing and Multimedia - MoMM '11, 2011
Abstract There exists a plethora of work about information dissemination and routing in Wireless ... more Abstract There exists a plethora of work about information dissemination and routing in Wireless Sensor Networks (WSNs), but no work tries to aggregate all this research and connect it all together. This paper, however, reviews WSN research and presents a two-...
2009 6th IEEE Consumer Communications and Networking Conference, 2009
There is a large body of work addressing information storage, reduction, and dissemination in Wir... more There is a large body of work addressing information storage, reduction, and dissemination in Wireless Sensor Networks (WSNs), but there seems to be no contribution giving a survey of this literature. In this paper we take on such a challenge and review previous WSN research and further presents a framework that we use for classifying the different proposed approaches and techniques. The framework is structured into 3 tiers: 1) routing and network infrastructure, 2) logical network infrastructure, and 3) information storage and processing. The paper, however, mainly focuses on tier-2 and tier-3. We also discuss future visions and challenges within the WSN community.
The success of high-level programming models in Wireless Sensor Networks (WSNs) is heavily depend... more The success of high-level programming models in Wireless Sensor Networks (WSNs) is heavily dependent on factors such as ease of programming, code well-structuring, degree of code reusability, and required software development effort. Component-based programming has been recognized as an effective approach to meet such requirements. Most of componentization efforts in WSNs were ineffective due to various reasons, such as high resource demand or limited scope of use. In this paper, we present REMORA, a new approach to practical and efficient component-based programming in WSNs. REMORA offers a well-structured programming paradigm that fits very well with resource limitations of embedded systems, including WSNs. Furthermore, the special attention to event handling in REMORA makes our proposal more practical for WSN applications, which are inherently event-driven. More importantly, the mutualism between REMORA and underlying system software promises a new direction towards separation of concerns in WSNs. Our evaluation results show that a well-configured REMORA application has an acceptable memory overhead and a negligible CPU cost.
Proceedings of the 6th International Conference on Advances in Mobile Computing and Multimedia - MoMM '08, 2008
The paper first gives an overview of the required functions for providing Internet connectivity a... more The paper first gives an overview of the required functions for providing Internet connectivity and mobility management for mobile ad-hoc networks (MANETs). Internet gateway selection is one of these functions. Since multiple Internet gateways might exist on the same MANET domain, a hybrid metric for Internet gateway selection is proposed as a replacement of the shortest hop-count metric. The hybrid metric provides load-balancing of intra/inter-MANET traffic. Simulation results show that ad-hoc routing protocols, using our proposed metric get better performance in terms of packet delivery ratio and transmission delay, at the cost of slightly increased signalling overhead.
2009 International Conference on Advanced Information Networking and Applications, 2009
An increasing number of research efforts on wireless sensor networks (WSNs) are now considering d... more An increasing number of research efforts on wireless sensor networks (WSNs) are now considering dynamic environments with heterogeneous sensor devices. Most of this research considers data, control, and management issues separately and not clearly within a common architecture. This paper presents our development of an architecture, namely DCM-Arch, to address these issues together. The architecture consists of three-planes of functionalities (in the vertical dimension): 1) data, 2) control, and 3) management; and fourtiers of network infrastructures (in the horizontal dimension): 1) routing and network infrastructure, 2) logical network infrastructure, 3) adaptation middleware, and 4) componentbased software application. The data plane handles the information storage, reduction, and dissemination in WSNs. The control plane deals with the lightweight sensor adaptation and reconfiguration middleware to cope with the dynamic changes of the environment. Finally, the management plane provides the context management functions, e.g. for collaboration and reasoning, to allow sensors, coordinators, and sinks to make good decisions about adaptation and reconfiguration. While the vertical dimension describes the functionalities of DCM-Arch, its four-tiers provide the required facilities to achieve those functionalities.
Proceedings of the 13th International Conference on Information Integration and Web-based Applications and Services - iiWAS '11, 2011
Mobile ad-hoc networks (MANETs) have attracted extensive research interests over the past several... more Mobile ad-hoc networks (MANETs) have attracted extensive research interests over the past several years due to its multi-hop, self-organized characteristics, leading to a new application domain: instant and fast-deployed ad-hoc services without any network infrastructures. Many testbeds for protocol evaluation have been designed and developed toward this trend. In this paper, we review the pros and cons of each testbed
International Journal of Web Information Systems, 2009
Purpose -The purpose of this paper is to describe the required functionalities on providing Inter... more Purpose -The purpose of this paper is to describe the required functionalities on providing Internet connectivity and mobility management for mobile ad-hoc networks (MANETs), present discovered problems such as inconsistent contexts, and provide the corresponding solutions. It also provides a hybrid metric for the load-balance of intra/inter-MANET traffic over multiple Internet gateways.
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Papers by Quan Le-trung