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Automatic sensor clustering: connectivity for the internet of things
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.ORCID iD: 0000-0002-1342-0966
2011 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Current predictions from industry envision that within a decade, the Internet will bepopulated by tens of billion of devices. Already today, smart Internet devices havesensors that provide an enormous potential for creating new applications. The chal-lenge at hand is how this information can be shared on the future Internet in order tounlock the full capability of applications to interact with the real world. Therefore,there is an urgent need for scalable and agile support for connecting people, placesand artifacts in applications via a vast number of devices and sensors on the futureInternet. Clearly, this poses a challenge of sharing and thus storage of so-called con-text information. Beyond scalable context storage lays another challenge to identifyand locate devices that are important to the user. In a support for billion of contin-uously changing sensors and actuators, a search engine would not work. Thereforean intelligent way to group devices is required. This thesis deals with mainly three issues: Firstly, propose a method for devicesto be reachable and thus addressable independent of their location in the infrastruc-ture. Secondly, how can the proposed method be used to insure automatic connectiv-ity anywhere between clients and services offered by the device, in particular associ-ated sensors and actuators. Thirdly, how can the grouping and support be combinedand used to dynamically associate sensors from across the Internet with applications,assuming that the aforementioned grouping exists. The proposed solution to the firstissue is to store identifier-locator pairs in an overlay. For the second issue we pro-pose a sensor socket introduced which exploits the identifier/locator pairs to enabledevice mobility. The third issue is addressed by providing a group-cast operation inthe sensor socket. This arrangement allows communication with peers determinedby a grouping algorithm which operates on context information on the context over-lay. Thus we have enabled the creation of automated dynamic clustering of sensorsand actuators in the Internet of Things.The sensor socket is designed as a stand-alone module to support any contextoverlay that provides the same basic functionality. The sensor socket embodiesa support to automatically interconnect and communicate with devices. Using abridging software, remote devices can be dynamically found and inserted into legacylocal area network where current devices can benefit from the connectivity. For fu-ture work the bridge can be extended to actively locate and identify nearby sensorsthat are unable to participate in the overlay network otherwise.

Place, publisher, year, edition, pages
Sundsvall: Mid Sweden University , 2011. , 46 p.
Series
Mid Sweden University licentiate thesis, ISSN 1652-8948 ; 60
National Category
Computer Science
Identifiers
URN: urn:nbn:se:miun:diva-13953Local ID: STCISBN: 978-91-86694-38-8OAI: oai:DiVA.org:miun-13953DiVA: diva2:421942
Presentation
2011-04-28, O102, Sundsvall, 08:26
Supervisors
Available from: 2011-06-10 Created: 2011-06-10 Last updated: 2016-10-19Bibliographically approved
List of papers
1. Distributed Context Support for Ubiquitous Mobile Awareness Services
Open this publication in new window or tab >>Distributed Context Support for Ubiquitous Mobile Awareness Services
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2009 (English)In: 2009 Fourth International ICST Conference on Communications and Networking in China. ChinaCom'09., IEEE conference proceedings, 2009, 869-873 p.Conference paper (Refereed)
Abstract [en]

Context-aware applications and services require ubiquitous access to context information about the users or sensors such as preferences, spatial & environmental data, available connectivity, and device capabilities. Systems for the brokering or the provisioning of context data via wireless networks do so with centralized servers or by employing protocols that do not scale well with real-time distribution capabilities. In other cases, such as the extending of presence systems, the data models are limited in expressive capabilities and consequently incur unnecessary signaling overhead. This paper presents a distributed protocol, the Distributed Context eXchange Protocol (DCXP), and an architecture for the real-time distribution of context information to ubiquitous mobile services: We present the architecture and its principle operation in a sample ubiquitous mobile awareness service. Preliminary results indicate that our approach scales well for the ubiquitous provision of context data in real-time to clients on the Internet via 3G wireless systems. Performed measurements show that DCXP can reduce the time to process context data with a factor of 20 compared to similar approaches.

 

Place, publisher, year, edition, pages
IEEE conference proceedings, 2009
Keyword
3G wireless; Centralized server; Context aware applications; Context data; Context information; Data models; Distributed protocols; Environmental data; Exchange protocols; Mobile awareness; Mobile service; Time distribution; Ubiquitous access, Internet protocols; Network architecture; Network protocols; Real time systems; Wireless networks; Wireless telecommunication systems
National Category
Computer Science
Identifiers
urn:nbn:se:miun:diva-9669 (URN)10.1109/CHINACOM.2009.5339728 (DOI)2-s2.0-71749111713 (ScopusID)978-1-4244-4337-6 (ISBN)
Conference
2009 4th International Conference on Communications and Networking in China, CHINACOM 2009; Xian; 26 August 2009 through 28 August 2009; Category number CFP0970A; Code 78908
Available from: 2009-09-17 Created: 2009-09-17 Last updated: 2013-03-23Bibliographically approved
2. Location-Based Ubiquitous Context Exchange in Mobile Environments
Open this publication in new window or tab >>Location-Based Ubiquitous Context Exchange in Mobile Environments
2010 (English)In: Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering Vol 68, Springer, 2010, 177-187 p.Conference paper (Refereed)
Abstract [en]

Context-aware applications and services require ubiquitous access to context information of users. The limited scalability of centralized servers used in the provisioning of context information mandates the search for scalable peer-to-peer protocols. Furthermore, unnecessary signaling must be avoided in large-scale context networks, when location-based services only require nodes in a certain area with which to communicate context. To this end, we propose a lightweight model for composing and maintaining unstructured location-scoped networks of peer-to-peer nodes, which gossips in order to ensure quality of service for each user. The model is implemented in a prototype application running in a mobile environment, which is evaluated with respect to real-time properties. This model can also be extended to include more context dimensions, other than location.

Place, publisher, year, edition, pages
Springer, 2010
National Category
Computer Science
Identifiers
urn:nbn:se:miun:diva-12280 (URN)000307366900016 ()2-s2.0-84870673461 (ScopusID)
Conference
Monami 2010
Available from: 2010-11-24 Created: 2010-11-24 Last updated: 2015-03-17Bibliographically approved
3. Scenarios, Research Issues, and Architecture for Ubiquitous Sensing
Open this publication in new window or tab >>Scenarios, Research Issues, and Architecture for Ubiquitous Sensing
2010 (English)In: Lecture Notes of the Institute for Computer Sciences Social Informatics and Telecommunications Engineering  Vol 68, Springer, 2010, 285-297 p.Conference paper (Refereed)
Abstract [en]

This paper describes research issues and work-in-progress concerning ubiquitous sensing. We present scenarios where the current approaches are deficient in addressing the needs for ubiquitous sensing in services and applications on the Future Internet, involving the massive sharing of information from sensors via heterogeneous networks. We propose an information-centric architecture for real-time ubiquitous sensing which capitalizes on the proposed locator/identifier split, thus extending the Network of Information (NetInf) approach. From this we identify the challenges for which we present work-in-progress within the framework of the EU-funded MediaSense project. Firstly, we integrate sensors as addressable objects, exposed by means of sensor gateways and relocatable abstract interfaces. Sensor information is thus made available to applications solely based on identity. Secondly, sensor information is made available in a distributed data model towards searching and browsing. Finally, we evaluate the effectiveness of the architecture in proof-of-concept applications for intelligent commuting, environmental monitoring and seamless media transfer, utilizing two different sensor platforms.

Place, publisher, year, edition, pages
Springer, 2010
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:miun:diva-12282 (URN)10.1007/978-3-642-21444-8_25 (DOI)000307366900025 ()2-s2.0-84885889581 (ScopusID)978-364221443-1 (ISBN)
Conference
2nd International ICST Conference on Mobile Networks and Management, MONAMI 2010; Santander; Spain; 22 September 2010 through 24 September 2010
Available from: 2010-11-24 Created: 2010-11-24 Last updated: 2016-09-23Bibliographically approved
4. Sensor sockets enabling reliable communication using a context based grouping mechanism
Open this publication in new window or tab >>Sensor sockets enabling reliable communication using a context based grouping mechanism
2011 (English)In: 2011 Baltic Congress on Future Internet and Communications, BCFIC Riga 2011, IEEE conference proceedings, 2011, 161-167 p.Conference paper (Refereed)
Abstract [en]

There are more sensors connected to the Internet today and corporations predict that there will be billions of sensors within the decade. With billions of sensors, there is an opportunity for new behavior from applications in mobile devices based on sensor input. But such applications require a mechanism to provide a manageable subset of sensors, relevant to the user's current situation; since no single device is capable of maintaining a list of billion sensors. By using a context enabled distributed storage of sensors; we can provide communication with a finite set of nodes that are deemed relevant to the user's current context.We introduce the notion of a sensor socket, that share API similarities to a TCP/IP socket, which provides communication with remote devices. We identify requirements on the grouping mechanism concerning connectivity to ensure reliable communication decoupled from location. We then provide a scenario for how sensor sockets could enable device connectivity. Finally, we demonstrate a subset of the scenario, with a proof of concept, by presenting ad-hoc association of a printing resource with a mobile device connected to the Internet via mobile broadband

Place, publisher, year, edition, pages
IEEE conference proceedings, 2011
Keyword
Context-based; Current situation; Distributed storage; Finite set; Mobile broadband; Proof of concept; Reliable communication; Remote devices; Sensor inputs; TCP/IP sockets
National Category
Computer Science
Identifiers
urn:nbn:se:miun:diva-13954 (URN)10.1109/BCFIC-RIGA.2011.5733232 (DOI)2-s2.0-79953883053 (ScopusID)STC (Local ID)978-142448513-0 (ISBN)STC (Archive number)STC (OAI)
Conference
2011 Baltic Congress on Future Internet and Communications, BCFIC Riga 2011; Riga; 16 February 2011 through 18 February 2011; Category number CFP1106L-ART; Code 84530
Available from: 2011-06-10 Created: 2011-06-10 Last updated: 2016-10-19Bibliographically approved

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