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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

M2M Traffic Characteristics : When machines participate in communication

Orrevad, Anders January 2009 (has links)
Machine-to-machine, machine-to-man, or man-to-machine (M2M) communications is expected to grow very rapidly over the next few years with an anticipated 50 billion devices being connected to broadband connections by 2020 [35]. To be able to plan and dimension for the expected (increase) in data traffic it is important to have a model for the traffic that will flow through the network. A concept often talked about in conjunction with M2M communications is the “Internet of things”, where billions of “smart” objects are connected to the Internet and can be easily shared and used or re-used by many applications. One sub-field of M2M communications is sensor/actuator networks that are installed in households, creating automated homes by enabling home appliances to talk to each other and to applications that can be running on hosts connected to the Internet. Such sensor/actuator networks extend the uses of home appliances into completely new and exciting applications, while also potentially making homes more energy efficient by smarter management and operation of these appliances. The thesis was proposed by and carried out at Ericsson in Kista, Sweden during the summer and fall of 2009. The academic advisor was G. Q. Maguire Jr. of the Royal Institute of Technology (KTH) and industrial advisor was Per Ljungberg at Ericsson. This thesis has an industrial focus, specifically to produce models and prototypes that benefit Ericsson as a company and the Ericsson Connected Home project. This thesis has evaluated the available standards and designed, buildt, and evaluated a prototype application for one of these standards to operate with this home gateway. Additionally, the thesis should also benefit the academic world by offering tractable models for M2M traffic that have a foundation in reality, rather than solutions in search of a problem. / Maskin-till-maskin, maskin-till-man, eller man-till-maskin (M2M) kommunikation förväntas växa mycket snabbt under de närmaste åren med förväntade 50 miljarder enheter anslutna till en bredbandsuppkoppling år 2020 [35]. För att kunna planera och dimensionera för den förväntade (ökningen) i datatrafik är det viktigt att ha en modell för den trafik som kommer att flöda genom nätverket. Ett begrepp det ofta talas om i samband med M2M-kommunikation är " Internet of things ", där miljarder "smarta" objekt är anslutna till Internet och enkelt kan delas och användas på nytt sätt och av många användare. En undergrupp inom M2M-kommunikation är sensor nätverk som installeras i hushåll, för att skapa automatiserade hem där hemelektroniken kan prata med andra apparater och program som körs på datorer anslutna till Internet. Sådana sensornätverk utvidgar användningen av hushållsapparater till helt nya och spännande applikationer, samtidigt som det potentiellt göra bostäder mer energisnåla genom smartare förvaltning och drift av dessa apparater. Detta examensarbete görs på uppdrag av Ericsson i Kista, Sverige under sommaren och hösten 2009. Akademisk rådgivare är GQ Maguire Jr från Kungliga Tekniska Högskolan (KTH) och industriell rådgivare är Per Ljungberg på Ericsson. Examensarbetet har som industriellt fokus att tillverka modeller och prototyper för att modellera trafiken i Ericssons nätverk. Examensarbetets akademiska värde är genom att erbjuda lättgörliga modeller för M2M trafik som har en grund i verkligheten, snarare än lösningar på jakt efter ett problem.
2

Standardization perspectives of communication infrastructure of future homes : from automated home to sustainable, healthy and manufacturing home

Branger, Jakob January 2015 (has links)
Driven by the Internet of Things, devices and appliances will be increasingly connected to each other and the people within the home. In order for the communication to be possible a standard for communication is needed. In many cases there are too many standards, and for other cases there may instead be an absence of standard. This thesis provides a contemporary view of future developments of homes and the current standardization progress. Four domains in homes are investigated: the automated home domain, the sustainable home domain, the healthy home domain and the manufacturing home domain. Trends and technologies are identified that drive a change in homes. Services are described that may be provided in homes. The thesis discusses how services from different domains may be integrated, with a further investigation of the networked manufacturing service and its underlying communication infrastructure. Finally standards are identified and analyzed in regard to the communication infrastructure of the networked manufacturing service. The standardization development is progressing for each home domain. However, potential standard gaps are still present for many of the cross domain device communication. No standard has been identified for integration of services and integration of the business ecosystem in the manufacturing home domain. Similarly there is no standard for the software of 3D printing. New standards or further development of existing standards is needed to realize the networked manufacturing service.

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