Framework Architecture for Decentralized Communications

Jouni Mäenpää

Framework Architecture for Decentralized Communications

Julkaisun otsikon käännös: Viestinnän hajautuksen mahdollistava viitekehysarkkitehtuuri

Jouni Mäenpää

Tutkimustuotos: Doctoral Thesis › Collection of Articles

Abstrakti

Vertaisverkkoarkkitehtuurit poikkeavat perinteisistä, keskitettyihin palvelimiin pohjautu-vista arkkitehtuureista. Viimeisimmän vuosikymmenen aikana vertaisverkot ovat osoittautu-neet toimivaksi tavaksi toteuttaa palveluja. Tämä menestys on herättänyt kiinnostuksen standardoida vertaisverkkoyhteyskäytäntöjä ja -palveluita. Tärkein näistä aloitteista on P2PSIP (Peer-to-Peer Session Initiation Protocol). P2PSIP on joukko yhteyskäytäntöjä, joita standardoidaan IETF (Internet Engineering Task Force) -organisaatiossa. Tämä työ esittelee P2PSIP:n käyttämien teknologioiden ympärille rakennetun viitekehysarkkitehtuurin, joka mahdollistaa viestinnän hajautuksen. Teknologiat, joita työssä käytetään ovat RELOAD (REsource LOcation And Discovery), hajautetut tiivistetaulualgoritmit (DHT) ja ICE (Interactive Connectivity Establishment) -osoitteenmuuntajien läpäisymenetelmä. Työssä esitetty viitekehys koostuu joukosta itsenäisiä komponentteja, joita voidaan käyttää joko yksitellen tai ryhmissä tukemaan erilaisten käyttötapausten tarpeita. Viitekehys on suunniteltu joustavaksi; se ei ole jäykkä yhtenäinen arkkitehtuuri eikä joukko toisistaan riippuvia komponentteja. Se ei myöskään ole yhtä tarkoitusta varten rakennettu ohjelmistoalusta jonka komponentit eivät voi toimia itsenäisesti ja jotka eivät ole korvattavissa. Viitekehys ja sen komponentit toteutettiin osana tätä työtä. Tämä työ arvioi yllä mainitun viitekehyksen toteutuksen suorituskykyä käyttäen työn osana kehitettyjä prototyyppejä ja simulaattoria. Työ keskittyy arvioimaan DHT-algoritmien ylläpitorutiineja, ICE-menetelmää, viitekehyksen sovelluksille tarjoamien toimintojen suorituskykyä ja viitekehyksen toteutuksen suorituskykyä langattomissa verkoissa. Suorituskykyanalyysin pohjalta työ nostaa esille tekijöitä, jotka voivat muodostua pullonkauloiksi suorituskyvylle ja tunnistaa uusia hyödyllisiä ominaisuuksia. Työssä edellä mainitut pullonkaulat ratkaistaan ja uudet ominaisuudet lisätään suunnittelemalla uusia osia, jotka täydentävät viitekehyksen. Nämä uudet osat ovat hajautettujen tiivistetaulualgoritmien itseviritysmenetelmä, palveluiden hakumenetelmä, laitteiden välinen (M2M) hajautettu viestintämenetelmä ja istunnonaloitusviiveiden optimointimenetelmä. Työn tulokset voidaan jakaa kolmeen osa-alueeseen. Näistä ensimmäinen on viitekehyksen tarjoamiin palveluihin ja toimintoihin liittyvien viiveiden arviointi ja optimointi. Toinen osa-alue on viitekehyksen käyttämän sovelluskerroksen verkkoalustan suorituskyvyn arviointi ja alustan laajentaminen. Kolmas osa-alue on uusien käyttötapausten kehittäminen. Työn lopputulos on viestinnän hajautuksen mahdollistava viitekehysarkkitehtuuri, joka on skaalautuva, muuttuviin olosuhteisiin sopeutuva, sovellusriippumaton, moduuleista koottu, alustaviin standardeihin pohjautuva ja omaa korkean suorituskyvyn.

Julkaisun otsikon käännös	Viestinnän hajautuksen mahdollistava viitekehysarkkitehtuuri
Alkuperäiskieli	Englanti
Pätevyys	Tohtorintutkinto
Myöntävä instituutio	Aalto-yliopisto
Valvoja/neuvonantaja	Kantola, Raimo, Vastuuprofessori
Kustantaja	Aalto University
Painoksen ISBN	978-952-60-5120-8
Sähköinen ISBN	978-952-60-5121-5
Tila	Julkaistu - 2013
OKM-julkaisutyyppi	G5 Tohtorinväitöskirja (artikkeli)

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http://urn.fi/URN:ISBN:978-952-60-5121-5

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title = "Framework Architecture for Decentralized Communications",

abstract = "Peer-to-Peer (P2P) systems represent a paradigm shift from the traditional client/server architecture. Over the past decade, P2P technologies have proven themselves as a viable option for providing services in the Internet. This success has resulted in initiatives to develop standards-based P2P protocols and services. One of the major initiatives in this area is Peer-to-Peer Session Initiation Protocol (P2PSIP), a suite of communication protocols that enable the Session Initiation Protocol (SIP) to decentralize its functions. P2PSIP is being standardized in the Internet Engineering Task Force (IETF). This dissertation presents a framework architecture for decentralized communications that is built around P2PSIP and the set of technologies it uses, including the REsource LOcation And Discovery (RELOAD) P2P signaling protocol, Chord Distributed Hash Table (DHT) algorithm, and the Interactive Connectivity Establishment (ICE) Network Address Translator (NAT) traversal solution. The framework presented in this dissertation is a set of reusable and modular software components that can be used in a flexible manner either individually or in different combinations to support the needs of a broad set of applications and use cases. Due to its flexibility and modularity, the framework is not an integrated architecture, tightly coupled set of components, or a purpose-built software platform whose components cannot function individually or are not interchangeable. The framework and all of its components were implemented as a part of the work on this dissertation. In the dissertation, the performance of the implementation of the framework and its components is evaluated using real-world prototypes and simulators. The focus is on evaluating the performance of DHT maintenance routines, ICE-based NAT traversal, the operations the framework provides to applications, and the performance of the implementation of the framework in mobile environments. Based on the performance analysis, missing features and performance bottlenecks are identified. The performance bottlenecks are addressed and the missing features are added by designing new components to complete the framework. These components include self-tuning, service discovery, M2M communication, and session setup delay optimization components. The contributions of this dissertation can be divided into three categories. First, the delays associated with using the services and operations provided by the framework are analyzed and optimized. Second, the overlay network platform that the framework provides is evaluated and extended. Finally, the framework is applied to new use cases. The overall result of the work is a framework architecture for decentralized communications that is scalable, adaptive, generic, modular, based on emerging standards, and has high performance.",

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year = "2013",

language = "English",

isbn = "978-952-60-5120-8",

series = "Aalto University publication series DOCTORAL DISSERTATIONS",

publisher = "Aalto University",

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school = "Aalto University",

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T1 - Framework Architecture for Decentralized Communications

AU - Mäenpää, Jouni

PY - 2013

Y1 - 2013

N2 - Peer-to-Peer (P2P) systems represent a paradigm shift from the traditional client/server architecture. Over the past decade, P2P technologies have proven themselves as a viable option for providing services in the Internet. This success has resulted in initiatives to develop standards-based P2P protocols and services. One of the major initiatives in this area is Peer-to-Peer Session Initiation Protocol (P2PSIP), a suite of communication protocols that enable the Session Initiation Protocol (SIP) to decentralize its functions. P2PSIP is being standardized in the Internet Engineering Task Force (IETF). This dissertation presents a framework architecture for decentralized communications that is built around P2PSIP and the set of technologies it uses, including the REsource LOcation And Discovery (RELOAD) P2P signaling protocol, Chord Distributed Hash Table (DHT) algorithm, and the Interactive Connectivity Establishment (ICE) Network Address Translator (NAT) traversal solution. The framework presented in this dissertation is a set of reusable and modular software components that can be used in a flexible manner either individually or in different combinations to support the needs of a broad set of applications and use cases. Due to its flexibility and modularity, the framework is not an integrated architecture, tightly coupled set of components, or a purpose-built software platform whose components cannot function individually or are not interchangeable. The framework and all of its components were implemented as a part of the work on this dissertation. In the dissertation, the performance of the implementation of the framework and its components is evaluated using real-world prototypes and simulators. The focus is on evaluating the performance of DHT maintenance routines, ICE-based NAT traversal, the operations the framework provides to applications, and the performance of the implementation of the framework in mobile environments. Based on the performance analysis, missing features and performance bottlenecks are identified. The performance bottlenecks are addressed and the missing features are added by designing new components to complete the framework. These components include self-tuning, service discovery, M2M communication, and session setup delay optimization components. The contributions of this dissertation can be divided into three categories. First, the delays associated with using the services and operations provided by the framework are analyzed and optimized. Second, the overlay network platform that the framework provides is evaluated and extended. Finally, the framework is applied to new use cases. The overall result of the work is a framework architecture for decentralized communications that is scalable, adaptive, generic, modular, based on emerging standards, and has high performance.

AB - Peer-to-Peer (P2P) systems represent a paradigm shift from the traditional client/server architecture. Over the past decade, P2P technologies have proven themselves as a viable option for providing services in the Internet. This success has resulted in initiatives to develop standards-based P2P protocols and services. One of the major initiatives in this area is Peer-to-Peer Session Initiation Protocol (P2PSIP), a suite of communication protocols that enable the Session Initiation Protocol (SIP) to decentralize its functions. P2PSIP is being standardized in the Internet Engineering Task Force (IETF). This dissertation presents a framework architecture for decentralized communications that is built around P2PSIP and the set of technologies it uses, including the REsource LOcation And Discovery (RELOAD) P2P signaling protocol, Chord Distributed Hash Table (DHT) algorithm, and the Interactive Connectivity Establishment (ICE) Network Address Translator (NAT) traversal solution. The framework presented in this dissertation is a set of reusable and modular software components that can be used in a flexible manner either individually or in different combinations to support the needs of a broad set of applications and use cases. Due to its flexibility and modularity, the framework is not an integrated architecture, tightly coupled set of components, or a purpose-built software platform whose components cannot function individually or are not interchangeable. The framework and all of its components were implemented as a part of the work on this dissertation. In the dissertation, the performance of the implementation of the framework and its components is evaluated using real-world prototypes and simulators. The focus is on evaluating the performance of DHT maintenance routines, ICE-based NAT traversal, the operations the framework provides to applications, and the performance of the implementation of the framework in mobile environments. Based on the performance analysis, missing features and performance bottlenecks are identified. The performance bottlenecks are addressed and the missing features are added by designing new components to complete the framework. These components include self-tuning, service discovery, M2M communication, and session setup delay optimization components. The contributions of this dissertation can be divided into three categories. First, the delays associated with using the services and operations provided by the framework are analyzed and optimized. Second, the overlay network platform that the framework provides is evaluated and extended. Finally, the framework is applied to new use cases. The overall result of the work is a framework architecture for decentralized communications that is scalable, adaptive, generic, modular, based on emerging standards, and has high performance.

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KW - SIP (session initiation protocol)

KW - RELOAD (REsource LOcation and Discovery)

KW - ICE (interactive connectivity establishment)

KW - P2P

KW - M2M

KW - P2PSIP

KW - SIP (session initiation protocol)

KW - RELOAD (REsource LOcation and Discovery)

KW - ICE (interactive connectivity establishment)

KW - P2P

KW - M2M

M3 - Doctoral Thesis

SN - 978-952-60-5120-8

T3 - Aalto University publication series DOCTORAL DISSERTATIONS

PB - Aalto University

ER -

Framework Architecture for Decentralized Communications

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