• Title/Summary/Keyword: Wired Wireless Internet

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A Study on Wireless Data Quality Measurement Method for u-Healthcare Service in HSDPA Environment (HSDPA 환경에서의 u-Healthcare 서비스를 위한 무선 데이터 품질 측정 방안 연구)

  • Yun, Sung-Yeol;Park, Seok-Cheon
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.11 no.6
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    • pp.127-134
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    • 2011
  • Recently, the wireless data communication infrastructure appearing before the footlights crosses the limit in the wire and develop into the fast speed. Particularly, the issue about the u-Healthcare service using this increases. And the investigation of the quality guarantee of the wireless data network is important for the smooth service providing. However, the quality control research about the wireless network is insufficient because the existing research performs the quality control between the termination about the wired network continually. This paper presented the mobile service quality measurement reference considering the radio environment,that is the method for satisfying the quality guarantee of the wireless data network user offered the u-Healthcare service as the research about this and user needs. For this purpose, wireless data quality measurement indicator and standard was selected. The quality measure evaluation plan was presented according to the service. And each service presented the quality index especially.

MAC Address Spoofing Attack Detection and Prevention Mechanism with Access Point based IEEE 802.11 Wireless Network (Access Point 기반 무선 네트워크 환경에서의 MAC Address Spoofing 공격 탐지 및 차단 기법)

  • Jo, Je-Gyeong;Lee, Hyung-Woo
    • Journal of Internet Computing and Services
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    • v.9 no.4
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    • pp.85-96
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    • 2008
  • An authentication procedure on wired and wireless network will be done based on the registration and management process storing both the user's IP address and client device's MAC address information. However, existent MAC address registration/administration mechanisms were weak in MAC Spoofing attack as the attacker can change his/her own MAC address to client's MAC address. Therefore, an advanced mechanism should be proposed to protect the MAC address spoofing attack. But, existing techniques sequentially compare a sequence number on packet with previous one to distinguish the alteration and modification of MAC address. However, they are not sufficient to actively detect and protect the wireless MAC spoofing attack. In this paper, both AirSensor and AP are used in wireless network for collecting the MAC address on wireless packets. And then proposed module is used for detecting and protecting MAC spoofing attack in real time based on MAC Address Lookup table. The proposed mechanism provides enhanced detection/protection performance and it also provides a real time correspondence mechanism on wireless MAC spoofing attack with minimum delay.

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Implementation of RFID Data Transmission System using Wireless LAN (무선LAN 기반 RFID 데이터 전송시스템 구현)

  • 김종호;김영길;백수열
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.8 no.6
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    • pp.1055-1059
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    • 2004
  • A RFID(Radio Frequency Identification) system is a kind of radio frequency communication system and a branch of automatic data collection system. RFID system consists of RFID tags(or transponders) and RFID readers(controllers). This paper deals with the wireless communication that acquires tag IDs through RFID readers, and show the implementation of the target system which transmits tag IDs and related information to the server on the Internet through the wireless local area network. Today's RFID systems are usually implemented with the wired communication environment. In this paper, however, RFID system is effectively realized with the widely deployed wireless local area network and various RFID data can be collected by the readers which are communicating with the wireless access points of the local area network. Through the Internet, users also can have easy access to the server on the web and retrieve, analyze, and utilize tags' information.

A study on the System for the Mobile electronic account (모바일 기반의 디지털콘텐츠 사례 전자장부시스템에 관한 연구)

  • Song Eun-Jee
    • Journal of Digital Contents Society
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    • v.6 no.1
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    • pp.19-24
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    • 2005
  • Mobile service is able to offer the elastic service to anyone regardless of the place and the tin. With this characteristics, the ubiquitous service could be also provided even to the place which the access was limited with the existing line service, which could improve the mutual connection and could result in the service extension Mobile communication companies, which realized the limit of sale only by telephone conversation, have made an effort to develop wireless internet with concentration as its alternation. Especially concentrating their effort both to the development of distinctive and various contents and to tin development of system for mobile service such as the mobile banking, mobile game and etc., they have done their best to secure the number of the people using the wireless internet. This study is to propose the electronic account system based on the mobile as a case study of contents production for such a mobile service. This system has its advantage to perform the financial management immediately when the income and outcome happen without limitation of the time and space. The information could be stored, searched and modified by using of the mobile phone for this system was made up for the weak point of the financial management for wired internet.

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Design and Development of Agriculture Drone battery usage Monitoring System using Wireless sensor network

  • Lee, Sang-Hyun;Yang, Seung-Hak;You, Yong-Min
    • International journal of advanced smart convergence
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    • v.6 no.3
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    • pp.38-44
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    • 2017
  • Currently, wired gables have been installed or portable storage devices have been installed for data acquisition of flying drone. In this paper, we propose a technology to transmit data wirelessly by sensing information such as battery discharge value, acceleration, and temperature by attaching RF sensor to a drone. The purpose of this paper is to design and develop the monitoring technology of agriculture drone battery usage in real time using RF sensor. In this paper, we propose a monitoring system that can check real time data of battery changed value, temperature, and acceleration during pesticide control activity of agricultural drone.

A Study on the Efficiency Improving of Communication Protocols on the Internet of Things. (사물인터넷 통신프로토콜 성능 개선 연구)

  • Jang, Rae-Young;Lee, Jae-Ung;Jung, Sung-Jae;Bae, Yu-Mi;Soh, Woo-young
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2016.05a
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    • pp.427-430
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    • 2016
  • Internet of Things is one of the technologies that become a hot topic in recent years, is a technology that connects objects with wired or wireless network and share a information between objects. Gartner predicts that spread rapidly devices for end users, also increase revenue from enterprise equipment through the Annual 'Internet of Things' reports. By this trend, Internet of Things is becoming the platform of various kinds, the platform and the protocol for that have been developed a new technique. In this paper, we compared the performance of the communication protocol between devices in the Internet of Things, and propose a way to improve performance efficiency.

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AAA Mechanism for the Integration between Heterogeneous Network in Wireless Network Roaming Environment (무선 네트워크 로밍 환경에서 이기종 네트워크간 연동을 위한 AAA 메커니즘)

  • Moon, Jong-Sik;Lee, Im-Yeong
    • The KIPS Transactions:PartC
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    • v.15C no.6
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    • pp.481-492
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    • 2008
  • With the advancement of the Internet and networks, the combination of wired/wireless technologies is spreading rapidly since it enables the creation of new services and provides new features to both users and service providers. In such wired/wireless integrated services, network integration is very important because such systems are integrated by a linkage between heterogeneous networks and they involve an integration of transmission technologies across networks. In this situation, existing security and communication technologies are unsuitable since the network are integrated with heterogeneous networks. The network may also have several security vulnerability. Also, form of service that users offer will be service for roaming user. In these service, we must provide fast authentication and security at roaming. Therefore in this paper we proposed roaming and AAA mechanism in heterogeneous network environment. Our system provides secure communication and efficiency.

Android-Based Devices Control System Using Web Server (웹 서버를 이용한 안드로이드 기반 기기 제어 시스템)

  • Jung, Chee-Oh;Kim, Wung-Jun;Jung, Hoe-Kyung
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.19 no.3
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    • pp.741-746
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    • 2015
  • Recently, as mobile operating system market and wireless communication technology have been rapidly developed, many devices such as smart phones, air conditioners, smart TVs, cleaning robot, and cameras become available with android operating system. Accordingly, collecting variety of information through many everyday use devices with network connections is now enabled. However, in the current market, most devices are controlled individually developed applications, and there is growing need to develop a master application that can control multiple devices. In this paper, we propose and implement a system that can control multiple android-based devices on a Wired/Wireless router(AP) registered through web server. we expect such an effort can attribute to future IoT researches.

A Fairness Guarantee Scheme for Wired and Wireless Heterogeneous Networks (유무선 혼합 네트워크를 위한 TCP Fairness 보장 기법)

  • Kim, Seong-Chul;Cho, Yong-Bum;Moon, Il-Young;Cho, Sung-Joon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • v.9 no.2
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    • pp.549-552
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    • 2005
  • Multiple wireless devices in wired and wireless heterogeneous networks communicate with counterparts via a single access point (AP). In this case, the AP becomes a bottleneck of the network, therefore buffer overflows occur frequently and result in TCP performance degradation. In this paper, a new algorithm that prevents buffer overflows at AP and enhances TCP fairness is proposed. Depending on the buffer usage of AP, the new algorithm adaptively controls each TCP senders' transmission rate, prevents buffer overflows and thus guarantees improved TCP fairness. It is proved that the algorithm makes better of TCP throughput and fairness by preventing buffer overflows.

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Split-Acks Scheme for Performance Improvement of TCP Short Traffic Service in Wireless Environments (무선환경에서 TCP Short Traffic 서비스의 성능향상을 위한 응답패킷 분할 전송 기법)

  • 진교홍
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2000.10a
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    • pp.307-312
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    • 2000
  • In this paper, in order to improve the performance of TCP short traffic services in wireless Internet environments, the Split-ACKs(SPACK) scheme is proposed. In wireless networks, unlike wired networks, packet losses will occur more often due to high bit error rates. Therefore, each packet loss over wireless links results in congestion control procedure of TCP being invoked at the source. This causes severs end-to-end performance degradation of TCP. In this paper, to alleviate the TCP performance, the SPACK method split acknowledgement packets in the base station is proposed. Using computer simulation the performance of TCP using SPACK is analyzed and shows better performance than traditional TCP protocol.

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