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Previous issue date: 2015-12-18 / A populariza??o das redes sem fio e a crescente prolifera??o de dispositivos m?veis requerem o desenvolvimento de mecanismos de controle de mobilidade que suportem as diferentes demandas de tr?fego sob caracter?sticas de rede diversas. Um grande obst?culo no desenvolvimento deste tipo de tecnologia ? a complexidade envolvida no gerenciamento de todas as informa??es de mobilidade, principalmente quando se considera um grande n?mero de dispositivos. Al?m disso ? preciso lidar com toda a sobrecarga de sinaliza??o necess?ria para controlar estes procedimentos na rede de maneira eficiente. V?rias iniciativas propostas pela comunidade cient?fica tratam deste assunto de maneira ineficiente, apresentando solu??es que dependam da atua??o expl?cita do objeto m?vel (Moving Object - MO), respons?vel por acionar o processo de mobilidade, geralmente guiada exclusivamente por aspectos f?sicos, tais como RSS (Received Signal Strength) dos pontos de acesso (Point of Attachment - PoA) candidatos. Diante disso, este trabalho tem como objetivo conceber, avaliar e validar uma infraestrutura de comunica??o para o gerenciamento de mobilidade em sistemas WiNeMo (Wireless Networking for Moving Objects), fazendo uso da flexibilidade provida pelo paradigma das Redes Definidas por Software (Software Defined Networking - SDN), onde as fun??es de rede, incluindo o gerenciamento de mobilidade e qualidade de servi?o (Quality of Service - QoS), podem ser facilmente estendidas, tais como o software no plano de controle, sem sobrecarga computacional, e atualiza??es nos dispositivos de rede. Como principais contribui??es, destacam-se: (i) predi??o e controle de mobilidade infraestruturado; (ii) sele??o de melhor ponto de acesso e aprovisionamento de recursos com base nos requisitos de QoS das aplica??es dos objetos m?veis; (iii) balanceamento de carga por mobilidade, em casos de exaust?o de recursos no ponto de acesso pretendido; e (iv) setup de handover com base no IEEE 802.21. / The spread of wireless networks and growing proliferation of mobile devices require the development
of mobility control mechanisms to support the different demands of traffic in different
network conditions. A major obstacle to developing this kind of technology is the complexity
involved in handling all the information about the large number of Moving Objects (MO), as
well as the entire signaling overhead required to manage these procedures in the network. Despite
several initiatives have been proposed by the scientific community to address this issue they
have not proved to be effective since they depend on the particular request of the MO that is responsible
for triggering the mobility process. Moreover, they are often only guided by wireless
medium statistics, such as Received Signal Strength Indicator (RSSI) of the candidate Point of
Attachment (PoA). Thus, this work seeks to develop, evaluate and validate a sophisticated communication
infrastructure for Wireless Networking for Moving Objects (WiNeMO) systems by
making use of the flexibility provided by the Software-Defined Networking (SDN) paradigm,
where network functions are easily and efficiently deployed by integrating OpenFlow and IEEE
802.21 standards. For purposes of benchmarking, the analysis was conducted in the control and
data planes aspects, which demonstrate that the proposal significantly outperforms typical IPbased
SDN and QoS-enabled capabilities, by allowing the network to handle the multimedia
traffic with optimal Quality of Service (QoS) transport and acceptable Quality of Experience
(QoE) over time.
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/21028 |
| Date | 18 December 2015 |
| Creators | Silva, Felipe Sampaio Dantas da |
| Contributors | 45428670215, http://lattes.cnpq.br/1467664612924239, Cacho, Nelio Alessandro Azevedo, 03038841420, http://lattes.cnpq.br/4635320220484649, Silva, Fl?vio de Oliveira, 77422090634, Ven?ncio Neto, Augusto Jos? |
| Publisher | Universidade Federal do Rio Grande do Norte, PROGRAMA DE P?S-GRADUA??O EM SISTEMAS E COMPUTA??O, UFRN, Brasil |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
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