Md. Motaharul Islam

A survey on virtualization of Wireless Sensor Networks.

Wireless Sensor Networks (WSNs) are gaining tremendous importance thanks to their broad range of commercial applications such as in smart home automation, health-care and industrial automation. In these applications multi-vendor and heterogeneous sensor nodes are deployed. Due to strict administrative control over the specific WSN domains, communication barriers, conflicting goals and the economic interests of different WSN sensor node vendors, it is difficult to introduce a large scale federated WSN. By allowing heterogeneous sensor nodes in WSNs to coexist on a shared physical sensor substrate, virtualization in sensor network may provide flexibility, cost effective solutions, promote diversity, ensure security and increase manageability. This paper surveys the novel approach of using the large scale federated WSN resources in a sensor virtualization environment. Our focus in this paper is to introduce a few design goals, the challenges and opportunities of research in the field of sensor network virtualization as well as to illustrate a current status of research in this field. This paper also presents a wide array of state-of-the art projects related to sensor network virtualization.

Sensor proxy mobile IPv6 (SPMIPv6)--a novel scheme for mobility supported IP-WSNs.

IP based Wireless Sensor Networks (IP-WSNs) are gaining importance for their broad range of applications in health-care, home automation, environmental monitoring, industrial control, vehicle telematics and agricultural monitoring. In all these applications, mobility in the sensor network with special attention to energy efficiency is a major issue to be addressed. Host-based mobility management protocols are not suitable for IP-WSNs because of their energy inefficiency, so network based mobility management protocols can be an alternative for the mobility supported IP-WSNs. In this paper we propose a network based mobility supported IP-WSN protocol called Sensor Proxy Mobile IPv6 (SPMIPv6). We present its architecture, message formats and also evaluate its performance considering signaling cost, mobility cost and energy consumption. Our analysis shows that with respect to the number of IP-WSN nodes, the proposed scheme reduces the signaling cost by 60% and 56%, as well as the mobility cost by 62% and 57%, compared to MIPv6 and PMIPv6, respectively. The simulation results also show that in terms of the number of hops, SPMIPv6 decreases the signaling cost by 56% and 53% as well as mobility cost by 60% and 67% as compared to MIPv6 and PMIPv6 respectively. It also indicates that proposed scheme reduces the level of energy consumption significantly.

An Efficient Model for Smart Home by the Virtualization of Wireless Sensor Network

Wireless sensor networks (WSNs) are gaining tremendous importance thanks to their broad range of commercial applications. Out of the contemporary fields of research in WSNs, the virtualization of wireless sensor network (VSN) is a brand new research approach. In this age of economic recession, this state-of-the-art technology can provide the opportunity to build an economic business model for application area such as smart home. Building smart home is a big challenge for worldwide increasing elderly populations which are the largest demographic group of developed countries. In this paper, we propose a VSN based business model for implementing smart home for the rapidly growing elderly populations of the world in a cost-effective way. We also propose the virtualization architecture of fully functional sensor node known as sensor gateway router and mathematical model for the embedding of VSN node and link to the physical sensor node and links. Finally, we have implemented and evaluated the sensor virtualization scheme in embedded Linux environment. The evaluation method shows that the virtualization of sensor network technology reduces the overall cost and complexity significantly for the implementation of smart home.

Virtualization in Wireless Sensor Network: Challenges and Opportunities

Wireless Sensor Networks (WSNs) are gaining importance for their broad range of commercial applications such as in home automation, health-care and industrial automation. In these applications multi-vendor and heterogeneous sensor nodes are deployed. Due to strict administrative control over the WSN domains, communication barrier, conflicting goal & economic interest of different vendors of sensor node in WSN make it difficult to introduce a large scale federated WSN. By allowing heterogeneous wireless sensor networks to coexist on a shared physical substrate, virtualization in sensor network may provide flexibility, promote diversity, ensure security and increase manageability. This paper surveys the novel approach of using the large scale federated WSN resources in a sensor virtualization environment. In this paper we propose sensor virtualization architecture and focus on the challenges and opportunities of research in the field of sensor network virtualization as well as to illustrate a picture of current researches in this field.

Sensor Proxy Mobile IPv6 (SPMIPv6) - A framework of mobility supported IP-WSN

IP based Wireless Sensor Networks (IP-WSN) are gaining importance for its broad range of applications in health-care, home automation, environmental monitoring, security & safety and industrial automation. In all of these applications mobility in sensor network with special attention to energy efficiency is a major issue to be addressed. Host based mobility management protocol is inherently unsuitable for energy inefficient IPWSN. So network-based mobility management protocol can be an alternative to the mobility supported IP-WSN. In this paper we propose a mobility supported IP-WSN protocol based on PMIPv6 called Sensor Proxy Mobile IPv6 (SPMIPv6). We present its architecture, message formats and also analyze its performance considering signaling cost and mobility cost. Our analyses show that the proposed scheme reduces the signaling cost by 67% and 60% as well as reduces mobility cost by 55% and 60% with comparison to MIPv6 and PMIPv6 respectively.

A novel addressing scheme for PMIPv6 based global IP-WSNs.

IP based Wireless Sensor Networks (IP-WSNs) are being used in healthcare, home automation, industrial control and agricultural monitoring. In most of these applications global addressing of individual IP-WSN nodes and layer-three routing for mobility enabled IP-WSN with special attention to reliability, energy efficiency and end to end delay minimization are a few of the major issues to be addressed. Most of the routing protocols in WSN are based on layer-two approaches. For reliability and end to end communication enhancement the necessity of layer-three routing for IP-WSNs is generating significant attention among the research community, but due to the hurdle of maintaining routing state and other communication overhead, it was not possible to introduce a layer-three routing protocol for IP-WSNs. To address this issue we propose in this paper a global addressing scheme and layer-three based hierarchical routing protocol. The proposed addressing and routing approach focuses on all the above mentioned issues. Simulation results show that the proposed addressing and routing approach significantly enhances the reliability, energy efficiency and end to end delay minimization. We also present architecture, message formats and different routing scenarios in this paper.

Multi-modal sensing smart spaces embedded with WSN based image camera

In this paper we discuss the use of low frame rate image cameras on a WSN in order to gather micro-context information in the context of smart homes and smart living spaces for the elderly. These simple devices are an attractive alternative to their more heavy duty counterparts since they can gather ambient image data at a rate that is amenable to the ambient space that they are in without much infrastructural support or modification. We propose their use in a multi-modal sensing environment where information from other ambient sensors may be mixed and matched in order to provide intelligence about the space and the activities of the subjects within the space. Their compelling use case, which includes their light weight and ease of mobility makes them a good candidate for a multi-modal sensing smart space. In this paper we introduce our work on architecture of the smart space and the implementation of the feature extraction using the image camera.

A Novel Scheme for PMIPv6 Based Wireless Sensor Network

IP based Wireless Sensor Network (IP-WSN) is gaining tremendous importance because of its broad range of commercial applications in health care, building & home automation, asset management, environmental monitoring, security & safety and industrial automation. A network-based mobility management protocol called Proxy Mobile IPv6 has been standardized by the IETF NETLMM working group, and is starting to pay close attention among the telecommunication and Internet communities. Since host based IP mobility protocol is not feasible for the low power and low cost sensor node, network based mobility management protocol will be well suited for IP-WSN. In this paper we propose SPMIPv6 architecture, respective message formats and analyze the signaling cost and finally evaluate its performance. The result shows that the SPMIPv6 has lower signaling cost and packet delivery cost and it can improve the handover performance of UDP and TCP than the other mobility management protocol.

A Novel Data Classification and Scheduling Scheme in the Virtualization of Wireless Sensor Networks

Most of the nodes in a wireless sensor network (WSN) remain idle for the maximum period of their lifetime resulting in underutilization of their resources. There are many ongoing research studies to utilize the resources of sensor nodes in an efficient way. Virtualization of sensor network (VSN) is one of the novel approaches to utilize the physical infrastructure of a WSN. VSN can be simply defined as the virtual version of a WSN over the physical sensor infrastructure. By allowing sensor nodes to coexist on a shared physical substrate, VSN may provide flexibility, cost effectiveness, and manageability. This paper proposes a QoS-aware data classification and scheduling framework for VSN in the health care sector. We develop a tiny virtual machine called VSNware for health care applications, which facilitates QoS-aware forwarding of data packets, maintaining the reliability, delay guarantee, and speed. The simulation results also show that the proposed scheme outperforms the conventional WSN approaches.

Energy efficient framework for mobility supported smart IP-WSN

Energy efficient Internet Protocol based smart Wireless Sensor Networks (IP-WSN) are gaining tremendous importance because of its broad range of commercial applications in health care, building & home automation, environmental monitoring, security & safety and industrial automation. In all of these applications mobility of sensor node with special attention to energy constraints is an indispensible part. Host based mobility management protocol is inherently unsuitable for energy inefficient IP-WSN. So network-based mobility management protocol can be an alternative to the mobility supported IP-WSN. In this regard, Proxy Mobile IPv6 has been standardized by the IETF NETLMM working group, and is starting to pay close attention among the telecommunication and Internet communities. In this paper we propose energy efficient Sensor Network based PMIPv6 protocol called Sensor Proxy Mobile IPv6 (SPMIPv6). We present SPMIPv6 architecture, respective message formats and analyze the energy dissipation and finally evaluate its performance.