João Henrique de Souza Pereira
University of São Paulo
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Publication
Featured researches published by João Henrique de Souza Pereira.
2012 European Workshop on Software Defined Networking | 2012
Flávio de Oliveira Silva; João Henrique de Souza Pereira; Pedro Frosi Rosa; Sergio Takeo Kofuji
Internet core protocols were designed in the seventies and after four decades and a huge success, most of that initial design is still in place. As stated by Moores law, current digital devices offer a huge processing capacity when compared to the computational resources of the early Internet. Moreover, physical links, wired or not, offer great connectivity and high throughput capacity. New applications bring a new set of requirements that the Internet is not able to satisfy in a proper way. The Internet architecture must be reviewed and several research groups are engaged in this design. Software Defined Networking (SDN), currently materialized in OpenFlow, represents an extraordinary opportunity to rethink computer networks, enabling the design and deployment of a future Internet. This paper presents SDN based technologies available, describes some research initiatives and discusses how the research community can use them to shape future Internet architecture.
international conference on networks | 2012
Flávio de Oliveira Silva; Maurício Amaral Gonçalves; João Henrique de Souza Pereira; Rafael Pasquini; Pedro Frosi Rosa; Sergio Takeo Kofuji
New applications bring a new set of requirements that the Internet is not able to satisfy in a proper way. Internet architecture must be reviewed and researchers from all over the world are engaged in the design of a new Internet. Software Defined Networking (SDN), which is materialized in OpenFlow, represents an extraordinary opportunity to rethink computer networks. In this paper, taking advantage of SDN and the concepts of our previous work regarding the Entity Title Model, we present a proof of concept OpenFlow based implementation of the Entity Title Architecture. It is a clean slate network architecture for future networks where multicast and mobility are seamlessly provided. By using this implementation, we describe some experiments conducted and present a comparison between a video application implemented first, using the TCP/IP stack and then using our architecture focusing on its multicast capabilities and by consequently reducing bandwidth consumption. The results presented in this paper show that this consumption near the source by using our architecture remains constant while using TCP/IP it increases monotonically.
new technologies, mobility and security | 2009
João Henrique de Souza Pereira; Sergio Takeo Kofuji; Pedro Frosi Rosa
The ontology is used in different areas of computer systems for the explicit representation of conceptualizations, but there are few studies on the application of ontology in the intermediate and lower layers of computer networks. This paper extend the studies on ontology for the network and transport layers of the TCP/IP architecture, to address the human needs that demands technological requirements for the distributed systems. These systems have to address hosts, users and applications. This work presents one proposal to the horizontal addressing in the Internet architecture to collaborate in the improvement of distributed systems.
new technologies, mobility and security | 2009
João Henrique de Souza Pereira; Sergio Takeo Kofuji; Pedro Frosi Rosa
Applications in distributed systems, have increased their complexity and demands of new requirements, since the TCP/IP design, e.g. requirements for mobility, security, QoS and throughput. The access technologies also have a history of continuous development, with the increase of its capacity and new transmission medium. This evolution in applications and new access technologies have not been followed by significant development in the main protocols of the layers 3 and 4 in the Internet architecture, as the IP, TCP and UDP. This study shows ontological deficiencies in the Internet architecture in supporting new applications requirements and proposes improvements for the next generation Internet, based on the applications needs.
international conference on networking and services | 2010
João Henrique de Souza Pereira; Sergio Takeo Kofuji; Pedro Frosi Rosa
In this work in progress, a new proposal is introduced for Internet horizontal addressing through the unification of application, host, and user addresses in entity title. With this unification it is possible the host addressing in Internet without IP use, as well as the routing of applications without the use of TCP, UDP, or SCTP ports. For so, it is proposed to create one Domain Title Service in Internet architecture to enable the addresses unification and that the network structure can receive information about the entities’ needs, and then meet them.
international conference on networking and services | 2010
Fabíola Souza Fernandes Pereira; Eduardo Souza Santos; João Henrique de Souza Pereira; Pedro Frosi Rosa; Sergio Takeo Kofuji
There are several studies on the TCP/IP architecture evolution since the 80s, however, due to the great installed and used base there are difficulties in implementing improvements in large scale. In the last years, the number of researches that discuss the next generation Internet has grown, and this paper is a study collaboration in this area. This paper proposes the adding of a mechanism to guarantee the packet delivery in FINLAN, which is a protocol that enables the communication in networks with connectivity in layer 2 without the use of IP, TCP, and UDP protocols.
Future Internet | 2011
João Henrique de Souza Pereira; Flávio de Oliveira Silva; Edmo Lopes Filho; Sergio Takeo Kofuji; Pedro Frosi Rosa
The currently Internet foundation is characterized on the interconnection of end-hosts exchanging information through its network interfaces usually identified by IP addresses. Notwithstanding its benefits, the TCP/IP architecture had not a bold evolution in contrast with the augmenting and real trends in networks, becoming service-aware. An Internet of active social, mobile and voracious content producers and consumers. Considering the limitations of the current Internet architecture, the envisaged scenarios and work efforts for Future Internet, this paper presents a contribution for the interaction between entities through the formalization of the Entity Title Model.
Future Internet | 2012
Flávio de Oliveira Silva; Alex Dias; Caio César Ferreira; Eduardo Souza Santos; Fabíola Souza Fernandes Pereira; Isabelle Cecília de Andrade; João Henrique de Souza Pereira; Lásaro J. Camargos; Luiz Cláudio Theodoro; Maurício Amaral Gonçalves; Rafael Pasquini; Augusto Neto; Pedro Frosi Rosa; Sergio Takeo Kofuji
Researchers from all over the world are engaged in the design of a new Internet, and Software-Defined Networking (SDN) is one of the results of this engagement. Net-Ontology uses a SDN approach to bring semantics to the intermediate network layers and make them capable of handling application requirements and adapt their behaviour over time as required. In this paper we present an experimental evaluation of Net-Ontology and a feature comparison against the traditional TCP/IP stack. This paper extends our earlier work towards a Future Internet, showing a viable approach to introduce semantics at network lower layers by contributing to bring richer and efficient services.
international conference on networking and services | 2010
Eduardo Souza Santos; Fabíola Souza Fernandes Pereira; João Henrique de Souza Pereira; Pedro Frosi Rosa; Sergio Takeo Kofuji
The current TCP/IP architecture has a series of redundancy that reflects on overhead during data transfer, which becomes costly for real time applications. The purpose of this paper is to propose a post IP structure called Fast Integration of Network Layers (FINLAN), which eliminates the use of network and transport layers in networks with layer 2 connectivity. The goal is simplify the way the information is addressed and transferred, optimizing the network structure for distributed systems at the new generation Internet.
Future Internet | 2011
Eduardo Souza Santos; Fabíola Souza Fernandes Pereira; João Henrique de Souza Pereira; Luiz Cláudio Theodoro; Pedro Frosi Rosa; Sergio Takeo Kofuji
This paper presents the researches for better integration between services and networks by simplifying the network layers structure and extending the ontology use. Through an ontological viewpoint, FINLAN (Fast Integration of Network Layers) was modeled to be able to deal with semantics in the network communication, cross-layers, as alternative to the TCP/IP protocol architecture. In this research area, this work shows how to integrate and collaborate with Future Internet researches, like the Autonomic Internet.