Topic-based pub/sub (TBPS) messaging plays an important role in building event-driven Internet of Things (IoT) applications. In IoT applications, scalability and locality-awareness are properties that help to achieve low-latency message delivery efficient usage network resources. However, none the existing distributed TBPS methods can simultaneously a sufficient level both properties. This paper proposes new overlay method called 'Skip Graph-based with Locality-Awareness' (STLA), which...

In this paper, requirements and technologies for realizing sensor overlay networks are introduced. Sensor should provide distributed data fusion mechanism, i.e. in-network computing feature, effective on sensors. also have scalability, maintainability sustainability. To treat such requirements, we developed an open source framework called 'PIAX'. The overview of PIAX its to described in paper.

In this paper, we propose a novel dynamic data flow platform for Internet of Things (IoT) applications in edge computing environments. To avoid the overloads on network and computational resources that are caused by IoT applications, proposed replicates processes changes structure dynamically distributed located at edges centers. The adds notion "index" to existing topic-based pub/sub (TBPS) messaging method support flexible definitions process allocations. addition, peer-to-peer-based...

The ubiquitous sensing-capable mobile devices have been fuelling the new paradigm of Mobile Crowd Sensing (MCS) to collect data about their surrounding environment. To ensure timeliness and quality samples in MCS, it is critical select qualified participants maintain sensing coverage ratios over important spatial areas (i.e., hotspots) during time periods interest meet various Quality Service (QoS) requirements applications. In this paper, we examine problems task assignment minimize overall...

We consider the overdamped dynamics of a Brownian particle in an arbitrary spatial periodic and time-dependent potential on basis exact solution for probability density form power series inverse friction coefficient. The expression average velocity ratchet is simplified high-temperature consideration when only first terms can be used. For additive-multiplicative (a sum time-independent contribution multiplicative perturbation), general explicit expressions are obtained which allow...

In this paper, we propose a new centralized Vehicle Delay/Disruption Tolerant Network (VDTN) architecture for vehicle volume data collections in the rural areas called "Hybrid DTN". Hybrid DTN applies Software Defined (SDN) into VDTN. A controller controls deliveries by wide-area cellular network as control-plane and collects large sensor from vehicles to cloud using VDTN data-plane network. We defined an oracle model Delivery Status Oracle (DSO) DTN, which manages delivery status of...

Edge computing enables application services to leverage low-latency responses. This paper describes the design of infrastructure-as-a-service for edge (EC-IaaS) realize multiple on same servers. In provision services, it is important service providers (ASPs) satisfy proximity constraints regarding servers hosting virtual machines (VMs). State-of-the-art methods provide VMs satisfying these require ASPs have a large amount information from an EC-IaaS provider, which incurs computational and...

In the ubiquitous computing environment, we believe that P2P-based context-aware application utilizing sensing data is important. However, since sensors are not placed under control of one specific entity, it difficult to retrieve appropriate information from distributed sensors. addition, when same queries sent by different users, processes for collecting repeated. The repetitive processing causes a load increase and network. this paper, propose architecture managing sensor information,...

In the Skip Graph, which is a structured overlay network that supports range retrievals, key supposed to consist of single value. Therefore, Graph cannot perform range-to-range retrievals. present research, we extend enabling it retain as key, and propose Range-Key can We also implement proposed scheme evaluate on PlanetLab.

In this paper, we propose a lightweight multi-receiver encryption scheme for the device to communications on Internet of Things (IoT) applications. order individual user control disclosure range his/her own data directly and prevent sensitive personal trusted third party, proposed uses device-generated public keys. For mutual authentication, party generates Schnorr-like identity-based partial private keys users. The provides source message integrity, replay-attack prevention implicit...

Due to the prevalence of sensors such as security cameras or environmental monitoring, sensor data stream delivery which means delivering observed continuously attracts great attention. For delivery, various methods distribute communication loads in case same streams multiple clients have been studied. Although these assume that cycles, cycles sometimes differ. Hence, we propose a P2P-based method different cycles. The proposed distributes by redelivering time but are included streams. We...

Pub/Sub communication model becomes a basis of various applications, e.g., IoT/M2M, SNS. These application domains require new properties the infrastructure, for example, supporting large number devices in widely distributed manner. In order to meet demands, we proposed Scalable System using OpenFlow Controller, which call SDN Aware (SAPS). SAPS utilizes both Application Layer Multicast (ALM) and based multicast (OFM). A simulation was done evaluating hybrid architecture traffic transmission...

In this work, we implemented a messaging system called MONAC, by which users can disseminate Twitter messages via smartphone-based DTN. MONAC is on an overlay network middleware PIAX. We extended PIAX to enable DTN with dynamic selection of available underlay and seamless authentication for SNS account cloud. By these mechanisms, be disseminated heterogeneous networks without falsification user ID frauds.

In this paper, we propose a scalable data collection scheme for distributed Topic-Based Pub/Sub (TBPS) messaging that can prevent overloads in network processes the large-scale IoT applications. Our proposal employs "Collective Store and Forwarding," which stores merges multiple small size messages into one large message along multi-hop tree structure on structured overlay TBPS, taking account delivery time constraints. This makes it possible to reduce overhead of process even when number...

Pub/Sub communication model becomes a basis of various applications, e.g. IoT/M2M, SNS. These application domains require new properties the infrastructure, for example, supporting large number devices with widely distributed manner, handling emergency messaging priority control and so on. In order to meet demands, we proposed Software Defined Network Aware (SAPS) which utilize both Application Layer Multicast (ALM) SDN, especially Open Flow based multicast (OFM). A simulation was done...

A very large number of sensors on facilities such as HVAC, light control systems and electric power meters, periodically submit their status information to Cloud platforms these days. As the amount data can easily get petabyte scale, we must consider use distributed application layer storage for managing facility information, which is often formatted time-series data. This paper describes FIAP Storage Peta, scale access protocol (FIAP), proposing architecture scheme management HBase. In this...

In this paper, we propose a new map-based collaboration environment 'MapWiki' for ubiquitous content distribution. MapWiki, users can publish Wiki contents which contains links or inline images of the objects in by simple formatting rules. The status change are updated on map real-time enables to communicate between real field and virtual environment. Publishers receivers authenticated using social network ensure trustfulness content. We implemented MapWiki mechanism Google Maps evaluated...

Due to the prevalence of sensors such as security cameras or environmental sensors, sensor data stream delivery which means delivering every cyclic collection attracts great attention. For delivery, various methods distribute communication loads in case same streams multiple clients have been studied. Although these assume that cycles, cycles sometimes differ. Hence, we propose a method different cycles. The proposed distributes by re-delivering time but are included streams.

In Smart Grid applications, we need to access end devices for monitoring and control over varieties of communication media (e.g., wireless, wired power-line communications). The Internet Protocol is useful because it can integrate those heterogeneous by IP X architecture. this paper, focus on the integration RS485, an optimal facility networking in buildings, proposing RS485. We introduce a dynamic priority-based packet-control scheduler (DPPCS) with master-slave token-passing, transmissions...

We propose a new concept for sensor network sharing which we call `VFSN: Virtual Federated Sensor Network' that enables multiple applications to share widely distributed networks flexibly, preserving resource isolations. In VFSN, virtualized sink called `vSink' are interconnected via Peer-to-Peer achieve dedicated federated network. defined operations required operate VFSN information service providers. have developed prototype system of and confirmed its basic behaviors using some sample...

Geographical contour lines are often used for the analysis of sensor data distribution on wide area. In this paper, we propose a method to reconstruct by collecting from widely distributed sensors. case, it is redundant collect all sensors area since geographically closed sense similar data. We collection peer-to-peer network realize spatial interpolation our proposal, assume hierarchical Delaunay overlay (HDOV) uniformly. addition, using structure HDOV, more local collected that affect...