• The Journal of the Institute of Internet, Broadcasting and Communication
• /
• v.17 no.2
• /
• pp.119-126
• /
• 2017

Developing the TCP/IP standard IBA which is higher organization of IETF decided to attach the TCP/IP protocol stack to small things, such as sensor. This means small object is also considered as on of the communication node, it has symbolic meaning that expand smart object has all five layer. Under this background, IoT/WoT configure the intelligent network between objects based on the internet to communication was introduced. Things has own IP address on IoT environment and are smart object that a lot of people communicate over the internet on Application Layer. In other words, IoT is that smart object are commercialized space. According to the interest of IoT, IETF establish CoAP for use as IoT protocol. CoAP is expected that standard protocols created by things is connected to the Internet protocol that can be used within a constrained environment. Accordingly, in this paper, we proposed Middleware API that can manage and collect the data of objects that connected CoAP network.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2011.04a
• /
• pp.146-148
• /
• 2011

홈 네트워크 분야는 현재 유무선 통신과 디지털 정보 기기를 기반으로 지능화 된 주거 공간을 제공하고자 하는 스마트 홈 연구가 활발하게 진행 중이다. 최근 사용자에게 더 편리하고 실용적인 스마트 홈 서비스를 어떻게 제공할 것인가에 대한 이슈가 대두되고 있다. 본 논문에서는 이를 위해 범용성, 유용성, 편의성을 고려한 서비스에 대해 연구하였다. 플랫폼 독립적인 웹서비스를 기반으로 홈 내 자원에 대한 기본 정보을 제공하고, 자원 사이의 관계 상황을 찾아 새로운 관계 정보를 제공한다. 이를 활용하여 사용자 편의적인 인터페이스를 가진 모바일 응용 프로그램을 개발하였다. 향후 장애 정보와 결합하여 홈 내 유지보수 서비스로의 확장을 기대한다.

• The KIPS Transactions:PartA
• /
• v.16A no.4
• /
• pp.263-272
• /
• 2009

For implementing the ubiquitous computing environments with smart home infrastructures, various research on the home network have been performed by several research institutes and companies. Due to the various home network middleware that are developed recently, the standardization of the home network middleware is being delayed and it calls for the middleware bridge which solves the interoperability problem among the heterogeneous middlewares. Now the research on the scheme for interoperability and the development of the various bridges are in progress, such as one-to-one bridge supporting interoperability between two middlewares and one-to-many bridge supporting interoperability among the multi-middlewares. However, existing systems and schemes does not consider the dynamic extensibility and performance that is particularly needed in the smart home environments. The middleware bridge should provide bridge extensibility with zero-configuration for non-expert users. It should also provide the load balancing scheme for efficient and proper traffic distribution. In this paper, we propose a Multi-Middleware Bridge(MMB) for dynamic extensibility and load balancing in home network environments. MMB provides bridge scalability and load balancing through the distributed system structure. We also verify the features such as interoperability, bridge extensibility, and the performance of the load balancing algorithm.

• The KIPS Transactions:PartA
• /
• v.16A no.1
• /
• pp.43-54
• /
• 2009

With the emergence of ubiquitous computing era, it has become increasingly important for a middleware which takes full advantage of HCI factors to support user-centric services. Many kinds of studies on HCI-friendly middleware for supporting user-centric services have been performed. However, previous studies have problems in supporting HCI factors, which are needed for user-centric services. In this paper, we present an agent-based intelligent middleware, which is called AIM, that provides user-centric services in ubiquitous HCI environments. We describe the middleware requirements for user-centric services by analyzing various HCI-friendly middleware and design AIM middleware which effectively supports various HCI factors such as context information management, pattern inference of user's behavior, and dynamic agent generation, etc. We introduce service scenarios based on the user's modalities in smart spaces. Finally, prototype implementation is illustrated as a manifestation of the benefits of the introduced infrastructure.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.4
• /
• pp.869-876
• /
• 2011

Recently, use of Smartphones is growing at an extremely rapid pace. Many researchers have recognized the importance of developing Smartphones applications under these circumstances, and they have been conducted many studies to develop apps efficiently. The Smartphones middleware has become a focus of recent research to develop efficient Smartphones apps on a server-client environment in particular. In this study, for enhancing portability, expandability and convenience in the development of apps on the various platforms of Smartphones, We have proposed XML based Open API optimized in the Smartphones middleware. We also evaluated the performance, by applying it in Smartphone middleware environment.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.15 no.3
• /
• pp.597-604
• /
• 2011

The various Smartphone platforms that are used currently make difficult to build efficient applications("apps") for Smartphone. Introduction of middleware in the Smartphone environment is being studied to solve this problem. By enhancing interoperability between server systems and Smartphone platforms as introducing this middleware supports efficiently for Smartphone apps to be developed and managed. Thus, the development of this middleware for Smartphone has become essential for the purpose of responding actively to the rapidly expanding Smartphone market. In this research, we designed and implemented Smartphone middleware which optimizes the cost and time for developing new application service and maintaining it. In order to test this implemented middleware's performance and its capabilities, we also developed university Smartphone apps and activated campus twitter.

• The KIPS Transactions:PartA
• /
• v.11A no.7 s.91
• /
• pp.529-536
• /
• 2004

Smart homes integrated with sensors, actuators, wireless networks and context-aware middleware will soon become part of our daily life. This paper describes a context-aware middleware providing an automatic home service based on a user's preference. The context-aware middle-ware utilizes 6 basic data for learning and predicting the user's preference on the multimedia content : the pulse, the body temperature, the facial expression, the room temperature, the time, and the location. The six data sets construct the context model and are used by the context manager module. The log manager module maintains history information for multimedia content chosen by the user. The user-pattern learning and pre-dicting module based on a neural network predicts the proper home service for the user. The testing results show that the pattern of an in-dividual's preferences can be effectively evaluated and predicted by adopting the proposed context model.

• The KIPS Transactions:PartB
• /
• v.14B no.4
• /
• pp.281-286
• /
• 2007

This paper proposes an intelligent context awareness middleware(ICAM) for Ubiquitous Computing Environment. In this paper we have researched about the context awareness middleware. The ICAM model is based on ontology that efficiently manages analyses and learns about various context information and can provide intelligent services that satisfy the human requirements. Therefore, various intelligent services will improve user's life environment. We also describe the current implementation of the ICAM for service adaptation based on fuzzy inference that help applications to adapt their ubiquitous computing environments according to rapidly changing. For this, after defining the requirements specifications of ICAM, we have researched the inferred processes for the higher level of context awareness. The Fuzzy Theory has been used in process of inferences, and showed constructing the model through the service process. Also, the proposed fuzzy inferences has been applied to smart Jacky, and after inferring the fuzzy values according to the change of temperature, showed the adaptability of Smart Jacky according to the change of surroundings like temperature as showing the optimal value of status.

• The KIPS Transactions:PartD
• /
• v.15D no.2
• /
• pp.247-256
• /
• 2008

In the ubiquitous environment, it is scattered all over our neighboring in many smart objects. These smart objects constantly produce the information and the amount of the generated information is massive. As the internet search engine came out to help us to find the useful data from the sea of the information connected to the internet, the sensor data stream processing middleware is appearing to make us to develop the ubiquitous service easily by extracting the meaningful information from the massive sensor data and delivering the extracted information to the application which makes our life convenient. We have to inform the information relating to the provided service to a middleware so that the ubiquitous service can be provided by using sensor data stream processing middleware. In this paper, we classify the information which is needed to express the ubiquitous service which uses sensor data for the service providing. And we propose a distinct markup language called Context-driven Service Markup Language (CSML) to effectively describe this information. We can easily express the various ubiquitous services which have to be provided in the various situations using proposed CSML.

• Communications of the Korean Institute of Information Scientists and Engineers
• /
• v.26 no.4
• /
• pp.22-29
• /
• 2008