• Proceedings of the Korea Information Processing Society Conference
• /
• 2008.05a
• /
• pp.1007-1010
• /
• 2008

최근 통신업계에서 앞으로 가장 주목받을 만한 기술로 BcN(Broadcast Convergence Network)기반 IMS(IP Multimedia Subsystem)를 꼽고 있다. 통신업계는 지금까지 빠른 기술성장과 함께 많은 이익을 창출하였다. 그러나 현재 통신사의 가입자의 수는 물론 ARPU(Average Revenue Per User)역시 정체기를 맞고 있다. 때문에 통신업계들은 BcN환경 기반 IMS구조로 사용자의 요구에 맞도록 차별화된 서비스를 제공함으로써 이익을 창출하고 앞으로도 지속 가능한 성장을 하기 위해 이에 대한 연구를 활발히 하고 있다. 하지만 현재 IMS의 구조로는 사용자들에게 차별화된 서비스를 제공하는데 어려움이 있다. 본 논문에서는 사용자들에게 차별화된 서비스를 제공하기 위해 BcN 환경에서 통합 서비스를 제공 하기 위한 전체 Enabler구조와 Enabler에서 상황에 따른 데이터처리 기법에 대해서 제시하고자 한다.

• International Journal of Internet, Broadcasting and Communication
• /
• v.15 no.4
• /
• pp.233-238
• /
• 2023

In the Fourth Industrial Revolution era, creative ideas are creating enormous value. This study conducted a case study on curriculum management plans aimed at protecting ideas and their results, recognizing the importance of intellectual property (IP), and cultivating basic knowledge about intellectual property. In particular, this study looked at ways to quickly learn related issues regarding new intellectual property rights related to computer software and artificial intelligence. In addition, research was conducted on ways to learn about efficient protection and utilization of inventions through actual examples. This study checked the importance and necessity of the interaction and communication between instructors and learners through the status of distance learning in domestic universities and a case study of distance learning of convergence subjects. We aim to continuously research effective class management methods and contribute to academic development through case studies of convergence subjects.

• Convergence Security Journal
• /
• v.16 no.5
• /
• pp.41-48
• /
• 2016

In this paper we propose a new method of security visualization, VisFlow, using traffic flows to solve the problems of existing traffic flows based visualization techniques that were a loss of end-to-end semantics of communication, reflection problem by symmetrical address coordinates space, and intuitive loss problem in mass of traffic. VisFlow, a simple and effective security visualization interface, can do a real-time analysis and monitoring the situation in the managed network with visualizing a variety of network behavior not seen in the individual traffic data that can be shaped into patterns. This is a way to increase the intuitiveness and usability by identifying the role of nodes and by visualizing the highlighted or simplified information based on their importance in 2D/3D space. In addition, it monitor the network security situation as a way to increase the informational effectively using the asymmetrical connecting line based on IP addresses between pairs of nodes. Administrator can do a real-time analysis and monitoring the situation in the managed network using VisFlow, it makes to effectively investigate the massive traffic data and is easy to intuitively understand the entire network situation.

• Journal of the Korea Convergence Society
• /
• v.9 no.10
• /
• pp.29-35
• /
• 2018

A food waste disposer commonly used in restaurants or homes is a type of machine with an agitator attached. The food waste disposer of the crushing type has a problem that the agitator may be broken if the piping or decomposition filter is blocked. In addition, there is an inconvenience that the user must manually open the cover to check the level in the food waste disposer. To solve these problems, this paper proposes a device that combines basic IoT technology with food waste disposer. The proposed device additionally designs and implement a real-time monitor processor and an automatic control processor inside the existing food waste disposer. The proposed food waste disposer allows the user to monitor the inside of the device using the smartphone. In addition, when the food is filled up to a certain position in the food waste disposer, it automatically stops and alarms. Using the proposed system, the user can conveniently check the inside of the food waste disposer, which has the advantage of preventing malfunctions in advance and reducing the probability of malfunction.

• Convergence Security Journal
• /
• v.13 no.3
• /
• pp.47-54
• /
• 2013

Ad-hoc network is composed of mobile nodes and has a vulnerability of attack like on conventional wire networks. So, many studies have been conducted to apply the traceback mechanism on wire network to Ad-hoc network. In this paper, a new mechanism that can trace back to IP source of spoofing DDoS packet using iTrace message on Ad-hoc network is proposed. The proposed mechanism implements ICMP Traceback message and the traceback path between agents allocated in local network and a server located in management network. Also the proposed mechanism can trace the position of attacker even after an attack is over and has extendability through standardization by using a mechanism that IETF proposed. Result of performance evaluation shows a great improvement in terms of load, integrity, safety, traceback function as compared with conventional mechanisms.

• Convergence Security Journal
• /
• v.13 no.3
• /
• pp.25-31
• /
• 2013

Looking at the recent value change of users and the usage pattern of network users, it is changing from simple web information, one-way information acquisition and data transmission to increase of usage of multimedia, increasing demand for security and customization, and increasing demands for free mobility. Due to this change of demand, the services which were provided individually, developed into a form which is merged, the network also seems to develop into the combined network from the individual network for individual service, and the communication network control technology which is the core technology is also rapidly developing. To reflect the users' demands, the next generation network created the multi-layer network which is based on the WDM/IP transmission system and added the to make it easy to restructure. P-OTS (Packet-Optical Transport System) can be defined as a platform that combines SONET/SDH, Ethernet, DWDM, optical transport network (OTN) switching and reconfigurable optical add-drop multiplexers (ROADMs). In this paper, we suggested that the optimum path choice be performed through diversification of the PCE-based path selection using the information of various layers altogether in the multi-layer environment, compared with the established path selection method when the path was selected using the information of each layers.

• Journal of the Institute of Convergence Signal Processing
• /
• v.8 no.1
• /
• pp.51-57
• /
• 2007

In this paper we introduce the concept of MPLS-based VPN and propose a scheme for providing VPN services in MPLS networks. Furthermore, we design the control components and the operational procedures and evaluated the performance of traditional VPN implementation methods and MPLS-based VPN. In this scheme it is possible to solve several problems that IP-based VPN pertains via the allocation of VPN ID and virtual space without tunneling, thereby providing effective VPN services. In other words, the MPLS-based VPN scheme uses MPLS networking technology together with the PSTN which can achieve a perfect segregation of user traffic on per-customer basis in a physical link and can guarantee high reliability and security levels. Specially, in the perspective of customers, it can save networking facilities installation and maintenance costs considerably. On the contrary, it possesses some shortcomings in that its deployment tends to be restricted within an ISP's network boundary and it is vulnerable to external security break-ins when going through public networks such as the Internet due to its lack of data encryption capability.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.35 no.3B
• /
• pp.503-516
• /
• 2010

In this paper, we propose the converged profile and authentication scheme for supporting converged media services of broadcasting & communications convergence in fixed mobile convergence networks. The proposed scheme supports the management of access, service, mobility and IPTV profiles on subscriber and a function of open API(Application Program Interface) for providing the subscriber profile for the third party service provider with the PUSH/PULL method. The open API is based on a web service and a REST(Representational State Transfer) and provides various services for the third party service provider with ease. In addition, the proposed scheme supports a function of SSO(Single Sign-on). After user succeeded in establishing an access connection, user can sustain the same authentication state with this function although connected access network is changed or IMS(IP Multimedia Subsystem) service network is attached. We evaluate and analyze the performance of the proposed scheme through the implementation of CUPS(Converged User Profile Server) system test-bed.

• Journal of Convergence Society for SMB
• /
• v.5 no.4
• /
• pp.5-10
• /
• 2015

With the advance of ICT, understanding the condition of network and analysing network monitoring have become an important issue. On the TCP/IP network, SNMP is the typical protocol that catches the condition of network by using polling method. If polling method is implemented for a long period, to catch the change of the condition of the network is not easy. On the other hand, in case of short-term polling, even if it could catch the condition of the network in real time, responsive messages to results of the polling cause the increase of traffic and therefore burden the network. There have been studies to control the overhead of responsive messages by controlling the polling period. However, not considering the characteristics of an agent, and running randomly, they cannot decrease the overhead although they would have an instant effect. This paper suggests an efficient polling method that decreases the traffic overhead of polling and catches the condition of the network in real time. Proposed method an polling for a short period and gave weight based on the characteristics of agents to catch the network condition, and a manager decided polling differentially based on the weight so that it decreased the overhead of polling traffic.

• Journal of Convergence Society for SMB
• /
• v.1 no.1
• /
• pp.67-73
• /
• 2011

Handover in high speed mobile communication service, in particulary mobile WiMAX is supported efficiency mobility to 120km/h speed. But, in order to accommodate number of user increment in a cell, wireless network is increment to microcell and picocell by allocate bandwidth and by decrease cell size. handover is occurrent and increment connection failure ratio In this result. IEEE 802.16 standard is support seamless connection through handover optimization scheme. But because authentication process is abbreviate, network weakness is exposure. In this paper, we propose handover scheme for support realtime service as VoIP, Picure communication, Streaming Data Service in order to support partially encryption method. In experiment, proposed scheme is proof which process time is increment 20% more than previous scheme.