• Title/Summary/Keyword: Bluetooth

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A research of direct data transmission and automatic pairing process through service server among Bluetooth devices (서버를 통한 Bluetooth 기기 자동 연결 및 데이터 직접 송수신 기법 연구)

  • Park, Jaeman
    • Proceedings of the Korea Information Processing Society Conference
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    • 2012.11a
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    • pp.736-737
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    • 2012
  • 블루투스(Bluetooth)는 일반적으로 10m 안팍의 휴대폰, 노트북 등의 휴대기기를 서로 연결해 정보를 교환하는 근거리 무선 기술 표준이다. 이 표준 기술은 이어폰이나 기기간의 페어링을 통하여 정보를 공유하기위한 단일 서비스 제품으로 자주 사용되기도 하며, 스마프폰에서는 이 표준 기술을 제어하여 명함이나 개인의 사진, 동영상 그리고 문서파일등을 공유하기 위한 방식으로 활용되기도 한다. 하지만 가장 큰 문제는 Bluetooth 를 응용하여 기기간의 페어링을 진행하는 절차가 일반적 사용자에게는 너무 복잡하고, 기술적인 처리 방식을 요구함으로써 대중화된 서비스를 지원하기에는 부족한 점이 많다. 따라서, 본 논문에서는 Bluetooth 환경하에서 사용자에게 직접적인 파일 전송을 지원하기 위해 서비스 서버에서 각 단말의 정보를 통합 수신하고, 이를 각 단말에 전달하여 각 단말이 자동적으로 Bluetooth 연결을 구성하고 서비스는 이를 활용하여 Direct 하게 파일을 송수신하는 간결화된 근거리 기반의 통신 연결 서비스 구성 방식을 제안하고 이를 증명하고자 한다.

A Study on the Network Throughput of Bluetooth Packet Communication System for Short Distance Wireless Connectivity (근거리 무선 연결을 위한 블루투스 패킷 통신 시스템의 네트워크 처리율에 관한 연구)

  • Ye, Hwi-Jin;Kim, Moon;Kim, Seong-Chul;Roh, Jae-Sung
    • Journal of Advanced Navigation Technology
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    • v.11 no.3
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    • pp.281-287
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    • 2007
  • The Bluetooth technology represents an attractive approach to enable short distance wireless connectivity. The Bluetooth standard operates at the 2.4 GHz ISM band and offers the advantage of establishing ad hoc networks, called piconet and scatternet. The spread of Bluetooth implementation in consumer products opens up a new short range wireless networking applications. Bluetooth MAC avoids packet collision within a piconet by simple time multiplexing. But lack of synchronization among independent neighboring piconets introduces packet overlapping within a time slot. In this paper, the wireless network throughput of Bluetooth packet transmission system applying the pure-ALOHA and slotted-ALOHA MAC is investigated according to the impact of channel environment. From the obtained results, the throughput of the Bluetooth MAC protocol shown to offer good performance in wireless channel, and the results are useful for the implementation of Bluetooth networks.

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Data Transmission Method using Broadcasting in Bluetooth Low Energy Environment (저전력 블루투스 환경에서 브로드캐스팅을 이용한 데이터전송 방법)

  • Jang, Rae-Young;Lee, Jae-Ung;Jung, Sung-Jae;Soh, Woo-Young
    • Journal of Digital Contents Society
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    • v.19 no.5
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    • pp.963-969
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    • 2018
  • Wi-Fi and Bluetooth technologies are perhaps the most prominent examples of wireless communication technologies used in the Internet of Things (IoT) environment. Compared to widely used Wi-Fi, Bluetooth technology has some flaws including 1:1 connection (one-way) between Master and Slave, slow transmission, and limited connection range; Bluetooth is mainly used for connecting audio devices. Since the release of Bluetooth Low Energy (BLE), some of the flaws of Bluetooth technology have been improved but it still failed to become a competitive alternative of Wi-Fi. This paper presents a method of data transmission through broadcasting in BLE and demonstrates its performance, one-to-many data transfer result. The Connection-Free Data Transmission proposed in this paper will hopefully be utilized in special circumstances requiring 1:N data transmission or disaster security network.

A Study on the Quality-of-Experience in Mobile Video Adaptive Streaming under Active Bluetooth Connection (와이파이-블루투스 콤보칩 사용이 모바일 비디오 스트리밍 서비스에 미치는 영향 분석)

  • Lee, Jongho;Choi, Jaehyuk
    • Journal of IKEEE
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    • v.24 no.1
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    • pp.46-51
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    • 2020
  • With Wi-Fi and Bluetooth connectivity becoming more common in today's handheld mobile devices, single-chip multi-radio combo-modules, which integrate two or more heterogeneous wireless radios on a single chip, are becoming more and more popular. The key requirement for combo solutions is that the quality of the user experience (QoE) must not be compromised by degrading connectivity performance. Therefore, characterizing and understanding the behaviour of combo-module is of vital importance to ensure this requirement in various environments. In this paper, we investigate the impact of the use of combo-modules on the performance of mobile video streaming over a Wi-Fi network. Our study reveals that the use of combo-modules incurs considerable side effects on QoE for mobile video streaming applications when the Wi-Fi and Bluetooth operate at the same time in the 2.4GHz ISM band. We reveal that rate-based adaptive algorithms, including the most popular adaptive bitrate streaming MPEG-DASH, is more severely affected by this phenomenon than buffer-based adaptive algorithms.

Customer Preference Analysis System using Bluetooth Low Energy (저전력 블루투스를 사용한 사용자 성향 분석 시스템)

  • Nguyen, Hieu Trong;Park, Jisun;Xi, Yulong;Park, San;Jang, Hyeonjun;Hong, Sungbin;Kim, Junoh;Cho, Kyungeun
    • Proceedings of the Korea Information Processing Society Conference
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    • 2017.04a
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    • pp.1073-1074
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    • 2017
  • In this paper, we present a customer preference analysis system using the Bluetooth Low Energy technology. Compared to Classic Bluetooth, Bluetooth Low Energy provides considerably reduced power consumption, and cost, as well as some unique characteristics while maintaining a similar communication range. The customer preference analysis system collects nearby Bluetooth Low Energy devices using an Android mobile device via Bluetooth Low Energy. In addition, the system is capable of suggesting, and advertising products that are related to these Bluetooth Low Energy devices based on the name of their manufacturer. This feature aims to attract potential customers to purchase these products.

A Study on Interference Cancellation of Adaptive Frequency Hopping System (적응형 주파수도약 시스템의 간섭신호 제거에 관한 연구)

  • Cho, Hyun-Seob
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.5
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    • pp.396-401
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    • 2017
  • In this paper, we propose a solution for interference with Bluetooth when connecting Bluetooth and other devices. The random frequency hopping technique is a technique of generating a hopping pattern using the entire Bluetooth channel without considering the interference of the wireless LAN. The proposed adaptive frequency hopping technique is a technique for generating a hopping pattern of Bluetooth channel considering periodic carrier sensing of Bluetooth and considering WLAN interference. Simulation results show that the use of adaptive frequency hopping reduces the packet error rate as the Bluetooth carrier sensing interval decreases even in the congestion of WLAN interference. Especially, the frequency hopping technique improves the average packet error rate by about 13% compared to the adaptive frequency hopping technique.

Capacity Analysis of Bluetooth Access Point for Location Based Service with Mobile Phones and Bluetooth (휴대폰과 블루투스 기반의 LBS를 위한 블루투스 AP 용량 시뮬레이션)

  • Song, Young-Ho;Kim, In-Hwan;Shin, Soo-Young;Ahn, Hyun-Sik;Jeong, Gu-Min
    • The Journal of the Institute of Internet, Broadcasting and Communication
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    • v.10 no.5
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    • pp.187-192
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    • 2010
  • In this paper, we analyze and simulate the capacity of Bluetooth AP (Access Point) for LBS (Location Based Service) with mobile phones and Bluetooth. Based on the modeling of connection setup times and data transmission times, we derive the capacity model of Bluetooth AP. Moreover, we consider content size and the statistics of incoming users for the simulation. From the simulation, we derive the possible number of users with capacity of the given Bluetooth AP in order to utilize the results in the real application environment.

The Practical Application of Bluetooth Media Technology and Outlook for Development

  • Song, Zheng-Hua;Shin, Hyun-Sik;Kim, Chun-Suk;Shin, Yun-Ho
    • The Journal of the Korea institute of electronic communication sciences
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    • v.1 no.1
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    • pp.87-93
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    • 2006
  • This is paper, with the development of computer and network communications technology, the technology of digital computer and modern communications has integrated into the field of intelligent home appliances, making them intelligentize with the function of a network information terminal. The paper introduces the Bluetooth SIG(Special Interesting Group) and the development of the standard of the Bluetooth. Researches the application model and the practical application of the Bluetooth technology, and the component elements of the Bluetooth. Finally deals with the outlook for the development of the Bluetooth technology.

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Time Division Multiplexing Algorithm for Multiple Connection of Bluetooth Devices (Bluetooth 장치의 다중 접속을 위한 시분할 접속 알고리즘)

  • Cho, Kyoung-Woo;Jeon, Min-Ho;Oh, Chang-Heon
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2013.05a
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    • pp.578-580
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    • 2013
  • Recently, personal mobile devices increased according to the rise of smart devices. Thus the all smart devices load with a bluetooth of standard specifications. However, it is deficiency to service using multiple connection of bluetooth device connection limit. Also bluetooth have other problem. bluetooth can't data communication until all device connection. In this paper, we proposed multi-connect algorithm based on TDM using AT command to overcome the problems above. As a result, it is confirmed that the real-time connectivity and data transmission between multiple devices is possible.

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Efficient Soft Handover method for Bluetooth (블루투스를 위한 효율적 소프트 핸드오버 방안)

  • Choi, Eun-Seok;Jeong, Myoung-Soon;Oh, Hoon;Park, Hong-Seong
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.29 no.3A
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    • pp.266-275
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    • 2004
  • Recently, wireless networks require an efficient handover scheme due to increase of mobile devices. But Bluetooth has several problems to support the efficient handover, which are the additional increase of signaling traffic and long time of the initial setup processes of inquiry and paging processes. This paper suggests an efficient Soft Handover method for Bluetooth (eSoHoB), which reduces the eplased time of the inquiry and paging process and supports a soft handover using the anticipation method. This paper implements the eSoHoB using two Bluetooth hardware modules and a testbed to be able to receive streaming data while a Bluetooth terminal is moving. This paper measures handover delays and the operation of the soft handover to verify the proposed mhthod.