• Title/Summary/Keyword: Broadband Internet Access

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Regulation Implication of Broadband Internet Access Service (초고속인터넷접속서비스에 대한 규제 정립)

  • 고순주
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • pp.464-467
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    • 2001
  • There nay be fierce debate over the nature of the medium that will herald the brave new world copper, fiber, wireless or satellite there is little doubt that future networks will be broadband in their capabilities. The Republic of Korea is a significant exception and leads the world, at present, in terms of number of subscribers with broadband access via ADSL. In order to further drive the growth in the broadband Internet access market, the government is scheduled to implement open access for ISPs and unbundling of the local loops of incumbent public telecom operators during the course of 2001. By the Way, Should incumbent telecommunication operators be obliged to provide unbundled access to the local loop\ulcorner

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Analysis of Termination Capacity in IEEE 802.16 Broadband Wireless Access Environments (IEEE 802.16 BWA 환경에서의 가입자 수용용량 분석)

  • Lim Seog-Ku
    • The Journal of the Korea Contents Association
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    • v.5 no.6
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    • pp.65-73
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    • 2005
  • Request about fast diffusion of internet and high-capacity multimedia service is increasing day after day. Because existent wireless LAN is short range, if subscriber is far away in base station transceiver system(Base Station), subscriber's quality of service becomes low, and wileless internet is expensive. Lately, WiBro(Wireless Broadband Internet) system that is developed in domestic by world first, is high-speed portable internet service that is situated in middle area of mobile phone and wireless LAN. In this paper, service traffic model and characteristics are analyzed to provide multimedia service based on IEEE 802.16 BWA accomplishes base of WiBro and simulation is conducted according to various traffic mixing ratio. Finally, on the basis of these simulation results, maximum allowable number of subscriber per cell is calculated.

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A Coordinated Ciphertext Policy Attribute-based PHR Access Control with User Accountability

  • Lin, Guofeng;You, Lirong;Hu, Bing;Hong, Hanshu;Sun, Zhixin
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.12 no.4
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    • pp.1832-1853
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    • 2018
  • The personal health record (PHR) system is a promising application that provides precise information and customized services for health care. To flexibly protect sensitive data, attribute-based encryption has been widely applied for PHR access control. However, escrow, exposure and abuse of private keys still hinder its practical application in the PHR system. In this paper, we propose a coordinated ciphertext policy attribute-based access control with user accountability (CCP-ABAC-UA) for the PHR system. Its coordinated mechanism not only effectively prevents the escrow and exposure of private keys but also accurately detects whether key abuse is taking place and identifies the traitor. We claim that CCP-ABAC-UA is a user-side lightweight scheme. Especially for PHR receivers, no bilinear pairing computation is needed to access health records, so the practical mobile PHR system can be realized. By introducing a novel provably secure construction, we prove that it is secure against selectively chosen plaintext attacks. The analysis indicates that CCP-ABAC-UA achieves better performance in terms of security and user-side computational efficiency for a PHR system.

A Practical Approach to Implement QoS in Broadband Access Networks (광대역 접속망에서 QoS 구현을 위한 현실적 접근법)

  • Park Seung-Chul
    • Journal of KIISE:Information Networking
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    • v.33 no.3
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    • pp.277-287
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    • 2006
  • Most of the existing broadband access networks based on DSL, cable modem, and Ethernet support the best-effort internet access service, and adopt the flat rate pricing mechanism. It is almost impossible to provide the differentiated communication services, in current broadband access networks, for the different users and/or the different application services. Currently, however, the advances in multimedia, communication, and security technologies push the interactive and/or streaming multimedia services and VPN services to be widely deployed over Internet, and they require more QoS-sensitive services than the best-effort service. Though various QoS technologies such as RSVP-based IntServ and DiffSern were already developed and under standardization in Internet world, it is impractical to replace the existing QoS-unaware access networks with the QoS-enabled ones at a time to deploy QoS-sensitive services. In this paper, after analyzing current broadband access network architectures and the status of QoS support, we propose a practical approach to support multimedia QoS in the broadband access networks. The approach will be based on the integration of the differentiated pricing and the DiffServ technology. And it will be a step-wise approach to support backward compatibility with the legacy broadband access networks as much as possible.

Analysis of the Competitiveness of Broadband over Power Line Communication in Korea

  • Jeong, Gi-Cheol;Koh, Dae-Young;Lee, Jong-Su
    • ETRI Journal
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    • v.30 no.3
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    • pp.469-479
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    • 2008
  • This study analyzes factors affecting the competitiveness of broadband over power line communication (BPLC) and predicts demand for the service, based on quantitative information about consumer preferences drawn from a survey of Korean consumers. Findings from the estimation suggest that, although consumers value some beneficial features of BPLC, to be competitive the speed and stability of its data transmission needs to be improved. Moreover, on the basis of a market simulation, we expect BPLC to occupy only a small portion of Korea's Internet access market in the future, a finding we expect would hold true for other developed countries whose Internet access markets are already mature.

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Smart WLAN Discovery for Power Saving of Dual-Mode Terminals

  • Park, Hyunho;Lee, Hyeong Ho
    • ETRI Journal
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    • v.35 no.6
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    • pp.1144-1147
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    • 2013
  • Dual-mode terminals (DMTs) equipped with cellular and WLAN interfaces have become popular in recent years. Users of DMTs can enjoy high-speed WLAN Internet access and wide area Internet access to cellular networks. However, a DMT may consume power inefficiently when discovering a WLAN with inherently limited service coverage. In this letter, we propose to use smart WLAN discovery (SWD) to minimize the power consumption required for WLAN discovery. To minimize the power consumption of a DMT, an SWD DMT activates its WLAN interface only when the DMT transfers data within the WLAN coverage area. The simulation results of SWD show an improved power-saving performance compared to previous WLAN discovery schemes.

Using TPC Model to Understand Broadband Diffusion in Korea (TPC(Technology, Policy and Culture) 모델을 이용한 한국의 초고속인터넷 확산 요인 분석)

  • Kum, Heisung
    • Informatization Policy
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    • v.17 no.3
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    • pp.74-97
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    • 2010
  • This paper investigates factors that have facilitated the rapid diffusion of broadband in South Korea. It finds that the quick spread of broadband access in South Korea is the result of combining the government's strategic ICT policy considering cultural traits, businesses'competitive efforts, and the timely explosion of domestic demand for IT service. This paper also discusses the impact of broadband diffusion on the digital divide. It finds that although there are still regional and age gaps in broadband access, the Korean government and businesses are working to alleviate these problems through various ways from systemic to physical ones. While the deployment of broadband cannot eliminate every issue of the digital divide, broadband access minimizes the digital divide by lowering the barrier to inequitable access to information. This paper concludes with a number of recommendations that address selected policy issues related to the spread of broadband Internet for its successful implementation.

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Provably secure attribute based signcryption with delegated computation and efficient key updating

  • Hong, Hanshu;Xia, Yunhao;Sun, Zhixin;Liu, Ximeng
    • KSII Transactions on Internet and Information Systems (TIIS)
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    • v.11 no.5
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    • pp.2646-2659
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    • 2017
  • Equipped with the advantages of flexible access control and fine-grained authentication, attribute based signcryption is diffusely designed for security preservation in many scenarios. However, realizing efficient key evolution and reducing the calculation costs are two challenges which should be given full consideration in attribute based cryptosystem. In this paper, we present a key-policy attribute based signcryption scheme (KP-ABSC) with delegated computation and efficient key updating. In our scheme, an access structure is embedded into user's private key, while ciphertexts corresponds a target attribute set. Only the two are matched can a user decrypt and verify the ciphertexts. When the access privileges have to be altered or key exposure happens, the system will evolve into the next time slice to preserve the forward security. What's more, data receivers can delegate most of the de-signcryption task to data server, which can reduce the calculation on client's side. By performance analysis, our scheme is shown to be secure and more efficient, which makes it a promising method for data protection in data outsourcing systems.

Analysis of Traffic Characteristics in Broadband Wireless Access (광대역 무선 액세스 환경에서의 트래픽 특성분석)

  • Koo Hye-Ryun;Lim Seog-Ku
    • Proceedings of the Korea Contents Association Conference
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    • pp.346-351
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    • 2005
  • 인터넷의 급속한 보급과 대용량 멀티미디어 서비스에 대한 요구 증가로 댁내 또는 중소사업장에 대한 광대역 무선 액세스(Broadband Wireless Access) 수요가 증가하고 있다. 기존의 무선랜은 도달거리가 짧아서 이동 중일 때나 AP(Access Point)에서 멀어지면 통화품질이 저하되고, 무선인터넷은 사용 비용이 높다. 이를 보안한 광대역 무선 인터넷 시스템인 와이브로(WiBro: Wireless Broadband Internet)는 휴대폰과 무선랜의 중간 영역에 위치한 이동초고속인터넷서비스이다. 본 논문에서는 IEEE 802.16 BWA을 기반으로 멀티미디어 서비스를 제공하기 위해서 서비스별 트래픽 모델과 특성을 분석하고, 다양한 트래픽 혼합 비율에 따라 시뮬레이션을 수행하였으며, 이를 토대로 최종적으로는 WiBro 시스템에서 수용 가능한 최대 가입자 수를 산출하였다.

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CONVERGENCE ANALYSIS OF BROADBAND, INTERNET AND INFORMATION FLOW FOR 43 AFRICAN COUNTRIES FOR 1991-2015

  • Shamba, Kudzai;Jang, Yu-Sang
    • 한국벤처창업학회:학술대회논문집
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    • pp.155-161
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    • 2017
  • In the field of information technology, broadband, internet and information flow have been found to be the primary elements to indicate access to information in this current information age. We examine whether the country difference in Broadband use, Internet use and information flow existing in 1991 has been reduced and if so how fast. Convergence framework had been utilised to answer these questions for 43 African countries. The results indicated that all the three chosen information technology indicators for 43 African countries are converging toward a reduction of dispersion and a catch-up process during the period 1991-2015. However, there are marked differences exhibited in the convergence processes for the Total groups and for the subgroups of countries by income level.

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