• Title/Summary/Keyword: Network Convergence IP

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Implementation of small and medium IMS Core Main System (중·소형 IMS 코어 메인 시스템 구현)

  • Kim, Sam-Taek
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.15 no.4
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    • pp.99-104
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    • 2015
  • Service platform which can offer various multimedia communication as the video, audio, voice and data is IMS(IP Multi-Media Subsystem). It is effective in the company is introducing only such convergence IMS services to be required to provide various multimedia services at the lowest cost and existing communication environment while keeping the maximum Therefore, in this study, we had developed IMS 코어 main system that not more than 1,000 employees of companies can effectively establish IMS solutions. This system is located at the middle between IMS terminal and CSCF(Call Session Control Function) in line with IMS services and provides CSCF in response to the IMS terminal and IMS terminal in response to the CSCF. As well, corded telephone and SIP phone which were used as terminal is linked with gateway.

IP Studio Infrastructure intended for Modern Production and TV broadcasting Facilities

  • Mfitumukiza, Joseph;Mariappan, Vinayagam;Lee, Minwoo;Lee, Seungyoun;Lee, Junghoon;Lee, Juyoung;Lim, Yunsik;Cha, Jaesang
    • International journal of advanced smart convergence
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    • v.5 no.3
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    • pp.61-65
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    • 2016
  • In the TV broadcasting, movie production and business the transportation of video between creators (programmers, studios) and distributors (broadcast and cable networks, cable and satellites companies) is still a mix of File Transfer Protocol (FTP), physical delivery, and expensive multicast satellite. Cloud-based file sync-and-share providers like Dropbox and box are playing an increasing role, but the industry's unique demands for speed and multicasting have fueled the growth of IP Video transport. This paper gives a solid grasp of the major elements of IP video technology, including content preparation, system architecture alternatives and network performance management.

Design and Performance Analysis of EU Directory Service (ENUM 디렉터리 서비스 설계 및 성능 평가)

  • 이혜원;윤미연;신용태;신성우;송관우
    • Journal of KIISE:Information Networking
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    • v.30 no.4
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    • pp.559-571
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    • 2003
  • ENUM(tElephon NUmbering Mapping) is protocol that brings convergence between PSTN Networks and IP Networks using a unique worldwide E.164 telephone number as an identifier between different communication infrastructure. The mechanism provides a bridge between two completely different environments with E.164 number; IP based application services used in PSTN networks, and PSTN based application services used in IP networks. We propose a new way to organize and handle ENUM Tier 2 name servers to improve performance at the name resolution process in ENUM based application service. We build an ENUM based network model when NAPTR(Naming Authority PoinTeR) resource record is registered and managed by area code at the initial registration step. ENUM promises convenience and flexibility to both PSTN and IP users, yet there is no evidence how much patience is required when users decide to use ENUM instead of non-ENUM based applications. We have estimated ENUM response time, and proved how to improve performance up to 3 times when resources are managed by the proposed mechanism. The proposition of this thesis favorably influences users and helps to establish the policy for Tier 2 name server management.

Attack Scenarios and Countermeasures using CoAP in IoT Environment (IoT기기에서 SSDP 증폭 공격을 이용한 공격기법 및 대응 방안)

  • Oh, Ju-Hye;Lee, Keun-Ho
    • Journal of the Korea Convergence Society
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    • v.7 no.4
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    • pp.33-38
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    • 2016
  • DDoS attack has been continuously utilized that caused the excessively large amount of traffic that network bandwidth or server was unable to deal with paralyzing the service. Most of the people regard NTP as the biggest cause of DDoS. However, according to recently executed DDoS attack, there have been many SSDP attack in the use of amplified technique. According to characteristics of SSDP, there is no connection for making a forgery of source IP address and amplified resources feasible. Therefore, it is frequently used for attack. Especially, as it is mostly used as a protocol for causing DDoS attack on IoT devices that constitute smart home including a wireless router, media server, webcam, smart TV, and network printer. Hereupon, it is anticipated for servers of attacks to gradually increase. This might cause a serious threat to major information of human lives, major government bodies, and company system as well as on IoT devices. This study is intended to identify DDoS attack techniques in the use of weakness of SSDP protocol occurring in IoT devices and attacking scenario and counter-measures on them.

Implications of TMF and QuEST Programs to Global Standardization Activities on Internet QoS in the Era of Digital Convergence (ITU-T와 IETF의 NGN 중심의 디지털 컨버전스 시대의 인터넷 QoS 가치사슬과 관련된 글로벌 표준화 활동)

  • Kim, Do-Hoon
    • Journal of Korean Society for Quality Management
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    • v.35 no.3
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    • pp.37-46
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    • 2007
  • Our society is increasingly dependent on the Internet, and this trend will be accelerating in the ear of All-IP convergence. As the core infrastructure of the All-IP convergence, the next generation Internet should enable end-to-end Quality of Service(e2e QoS). For that purpose, major international standardization institutes such as ITU(International Telecommunication Union) and IETF(Internet Engineering Task Force) are building the concept and architecture of the Next Generation Network(NGN). However, these institutes focus only on technical issues, and leave many business/policy-oriented challenges unresolved. For example, the standards raised by ITU assume that the entire service delivery process for e2e QoS services is perfectly working. But required is a standardized business interface and process for seamless inter-operations across many stakeholders including ISPs(Internet Service Providers), CPs(Content Providers), so on. On the other hand, TMF(TeleManagement Forum) and QuEST(Quality Excellence for Suppliers of Telecommunication) Forum, global consortiums of telecom operators and vendors, present sets of interface rules and process which playa crucial role as de facto standards: for example, NGOSS/eTOM and TL9000 authorization system. However, these standards focus on telephone services, and provide little principle for the next generation Internet. Our study seeks a way to combine these two strains for a successful implementation of NGN. In particular, we find a missing link in the NGN architecture and the elements that could be complemented with the help of NGOSS/eTOM and TL9000. Finally, presented is a strategic direction that our standardization policy should purse in order to reinforce our global leadership for the next generation Internet.

Implementation of Public Address System Using Anchor Technology

  • Seungwon Lee;Soonchul Kwon;Seunghyun Lee
    • International journal of advanced smart convergence
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    • v.12 no.3
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    • pp.1-12
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    • 2023
  • A public address (PA) system installed in a building is a system that delivers alerts, announcements, instructions, etc. in an emergency or disaster situation. As for the products used in PA systems, with the development of information and communication technology, PA products with various functions have been introduced to the market. PA systems recently launched in the market may be connected through a single network to enable efficient management and operation, or use voice recognition technology to deliver quick information in case of an emergency. In addition, a system capable of locating a user inside a building using a location-based service and guiding or responding to a safe area in the event of an emergency is being launched on the market. However, the new PA systems currently on the market add some functions to the existing PA system configuration to make system operation more convenient, but they do not change the complex PA system configuration to reduce facility costs, maintenance, and management costs. In this paper, we propose a novel PA system configuration for buildings using audio networks and control hierarchy over peer-to-peer (Anchor) technology based on audio over IP (AoIP), which simplifies the complex PA system configuration and enables convenient operation and management. As a result of the study, through the emergency signal processing algorithm, fire broadcasting was made possible according to the detection of the existence of a fire signal in the Anchor system. In addition, the control device of the PA system was replaced with software to reduce the equipment installation cost, and the PA system configuration was simplified. In the future, it is expected that the PA system using Anchor technology will become the standard for PA facilities.

Implementation of An Unmanned Visual Surveillance System with Embedded Control (임베디드 제어에 의한 무인 영상 감시시스템 구현)

  • Kim, Dong-Jin;Jung, Yong-Bae;Park, Young-Seak;Kim, Tae-Hyo
    • Journal of the Institute of Convergence Signal Processing
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    • v.12 no.1
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    • pp.13-19
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    • 2011
  • In this paper, a visual surveillance system using SOPC based NIOS II embedded processor and C2H compiler was implemented. In this system, the IP is constructed by C2H compiler for the output of the camera images, image processing, serial communication and network communication, then, it is implemented to effectively control each IP based on the SOPC and the NIOS II embedded processor. And, an algorithm which updates the background images for high speed and robust detection of the moving objects is proposed using the Adaptive Gaussian Mixture Model(AGMM). In results, it can detecte the moving objects(pedestrians and vehicles) under day-time and night-time. It is confirmed that the proposed AGMM algorithm has better performance than the Adaptive Threshold Method(ATM) and the Gaussian Mixture Model(GMM) from our experiments.

Transmission Performance Analysis of VCCN with SUMO depending on Packet Size and Participating Number of Clients (SUMO를 이용한 VCCN에서 패킷의 크기와 참여한 클라이언트 수에 따른 전송 성능에 대한 연구)

  • Yeon, Seunguk;Chae, Ye-Eun;Kang, Seung-Seok
    • The Journal of the Convergence on Culture Technology
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    • v.4 no.1
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    • pp.285-290
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    • 2018
  • Vehicular ad hoc network (VANET) is one of the future communication technologies in which it offers safe-driving information and Internet access for both drivers and passengers by communicating among cars on the road. In case of applying Content Centric Network (CCN) rather than TCP/IP over VANET, called VCCN, it can provide efficient multicast communication of shared information among participating cars as well as offer corresponding one-to-one communications. This paper introduces SUMO for simulating traffic flows, VANET for car-to-car ad hoc communications, and CCN for a future Internet architecture. In addition, it compares and analyses the transmission performance of moving cars over VCCN. According to the simulation results using SUMO and VCCN, the larger the packet size, the better the transmission performance. In addition, VCCN provides higher packet transmission rate than that of TCP/IP when the clients shares the same contents. Furthermore, the overall data reception rate exceeds the physical transmission channel rate.

An Implementation of IPMG for Multimedia Service with the Convergence of Broadcasting and Communications (통신방송의 융합형 멀티미디어 서비스를 지원하는 IPMG(IP Media Gateway) 구현)

  • Cho, Kwang-Hyun;Kim, Hyun-Cheol;Cho, Yok-Yon;Park, Deuk-In;Won, Heon;Ahn, Kwang-Yong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.33 no.2B
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    • pp.59-68
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    • 2008
  • In order to activate the digital broadcasting in Korea, the analog broadcasting will have been closed down until 2012. Recently IPTV(Internet Protocol TV) thorough internet has been regarded as the fourth media following the terrestrial, satellite, and cable for the digital broad casting. And it has been the important medium for the communication and broadcasting system. However IP is not easy to replace the entire broadcasting system with the digital - type broadcasting system. For the digital broadcasting, we should replace all TV sets, install the settop-boxes to receive the various IP media, solve problems about time delaying when changing channels, and support communication and broadcasting consolidation service for such as PVR and Network CCTV. IPMG is the digital converter that is able to solve these problems. In this paper, I'll develop and analyze IPMG converter's performance which sends and receives both the analogue and digital broadcasting signals through various media gives the Network PVR service.

TOSS: Telecom Operations Support Systems for Broadband Services

  • Chen, Yuan-Kai;Hsu, Chang-Ping;Hu, Chung-Hua;Lin, Rong-Syh;Lin, Yi-Bing;Lyu, Jian-Zhi;Wu, Wudy;Young, Hey-Chyi
    • Journal of Information Processing Systems
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    • v.6 no.1
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    • pp.1-20
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    • 2010
  • Due to the convergence of voice, data, and video, today's telecom operators are facing the complexity of service and network management to offer differentiated value-added services that meet customer expectations. Without the operations support of well-developed Business Support System/Operations Support System (BSS/OSS), it is difficult to timely and effectively provide competitive services upon customer request. In this paper, a suite of NGOSS-based Telecom OSS (TOSS) is developed for the support of fulfillment and assurance operations of telecom services and IT services. Four OSS groups, TOSS-P (intelligent service provisioning), TOSS-N (integrated large-scale network management), TOSS-T (trouble handling and resolution), and TOSS-Q (end-to-end service quality management), are organized and integrated following the standard telecom operation processes (i.e., eTOM). We use IPTV and IP-VPN operation scenarios to show how these OSS groups co-work to support daily business operations with the benefits of cost reduction and revenue acceleration.