Ppt on mobile communication and bluetooth

Mobile Communications Chapter 7: Wireless LANs

smartphones, 867 Mbit/s each Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2013 Freie Universität Berlin Institut of Computer Science Bluetooth Mobile Communications 2002 Basic idea Universal radio interface for ad-hoc wireless connectivity Interconnecting computer and peripherals, handheld devices, PDAs, cell phones – replacement of IrDA Embedded in other devices, goal: 5€/device (already < 1€) Short range (10 m), low/


Design and Implementation of Smartphone-based Systems and Networking

networking system Local profiles Mobile phone based local social interaction tools Application Scenario: Conference Goals and Challenges Design Goals Challenges Far-reaching and Unobtrusive Privacy and Security Auxiliary Support for Further Interactions Broad Adoption Challenges Lack of Communication Support Power and Computation Limitation Non-pervasive Localization Service Layered Publishing Spatial Layering Temporal Layering WiFi SSID at least 40-50 meters, 32 Bytes Bluetooth Device (BTD) Name 20/


Chapter 2: Wireless LANs and PANs

members: Ericsson, Intel, IBM, Nokia, Toshiba Added promoters: 3Com, Agere (was: Lucent), Microsoft, Motorola > 2500 members Common specification and certification of products IEEE founded IEEE 802.15 for Wireless Personal Area Networks (WPAN) and approved a Bluetooth-based standard. (was: ) History and Hi-Tech… 1999: Ericsson mobile communications AB reste denna sten till minne av Harald Blåtand, som fick ge sitt namn åt en ny/


School of Communication and Information Engineering 迎接数字化通信时代的挑战 一、世界是数字化的 二、数字处理的主要技术 三、 “ 蓝牙 ” 技术中的数字通信 郑国莘.

chip solution Bluetooth Radio Bluetooth Bluetooth Link Controller School of Communication and Information Engineering /Communication and Information Engineering Mobile Topology –All device are mobile –Walknet: –The whole piconet cell is mobile –Make and Brake Connections Topology School of Communication and Information Engineering Topology, Scatternet master slave 1 slave 2 slave 3 master slave 4 slave 5 School of Communication and Information Engineering Frequency Hopping School of Communication and/


Bluetooth: Blackberry (JSR 82) And Android

on any one device changes. Peripheral connectivity Car kits Hands-free packages enable users to access phones and other devices without taking their hands off the steering wheel Mobile payments Your Bluetooth-enabled phone can communicate with a Bluetooth-enabled vending machine to buy a can of Diet Pepsi, and put the charge on your phone bill. Blackberry JSR 82 JSR 82 The API is intended/


Short Distance Wireless Communication. Team 5 Thomas French Jordan Harris Mike Symanow Luseane Tangataevaha.

1Mb/s – 3 Mb/s  Use in mobile phones, laptops, telephones, printers, GPS, video game consoles  Bluetooth USB dongle – must use if computer is not Bluetooth enabled http://en.wikipedia.org/wiki/Bluetooth Advantages/Disadvantages  Advantages:  Wireless, Inexpensive, Automatic  Low energy and power consumption  Disadvantages:  Security  Viruses over the years  Bluejacking  Health Concerns (same as mobile phones) ZigBee   High-level communication protocol   Aim low   The Name   Zig/


Mobile Communications Chapter 7: Wireless LANs  Characteristics  IEEE 802.11  PHY  MAC  Roaming .11a, b, g, h, i …  HIPERLAN  Standards overview.

of Bluetooth SIG, www.bluetooth.orgwww.bluetooth.org  1999: erection of a rune stone at Ercisson/Lund ;-)  2001: first consumer products for mass market, spec. version 1.1 released Special Interest Group  Original founding members: Ericsson, Intel, IBM, Nokia, Toshiba  Added promoters: 3Com, Agere (was: Lucent), Microsoft, Motorola  > 2500 members  Common specification and certification of products (was: ) History and hi-tech… 1999: Ericsson mobile communications AB reste/


Near Field Communication and Bluetooth Bridge System for Mobile Commerce Adviser : Chao-Huang Wei Student : Shin-An Chan SN: M9920106 PPT 製作 :100%

lowers the merchants’ costs of transactions.  The low cost is expected to entice merchants to adopt the system and serves as a good initiation for the technology adoption. References  Near Field Communication and Bluetooth Bridge System for Mobile Commerce,Leong, C.Y. ; Ong, K.C. ; Tan, K.K. ; Gan, O.P.,Industrial Informatics, 2006 IEEE International Conference on,16-18 Aug. 2006 References  [1] ECMA/


Wireless Data. Outline History History Technology overview Technology overview Cellular communications Cellular communications 1G: AMPS; 2G: GSM; 2.5G:

Danes Harald controlled Denmark and Norway Harald controlled Denmark and Norway Harald thinks notebooks and cellular phones should seamlessly communicate Harald thinks notebooks and cellular phones should seamlessly communicate Bluetooth Devices NOKIA 9110 + FUJI DIGITAL CAMERA ERICSSON COMMUNICATOR ERICSSON R520 GSM 900/1800/1900 ALCATEL One Touch TM 700 GPRS, WAP ERICSSON BLUETOOTH CELLPHONE HEADSET Connected PC Connected Families Home and Office of the Future Internet Pipe Mobile display pad Electronic/


A Bluetooth Overview by N.G.Alexiou School of Computing & Mathematics Sciences Liverpool John Moores University.

existed Solve a simple problem, Replace cables used on mobile devices and their peripherals with radio frequency waves Thus Bluetooth tries to emulate cost, security and capabilities of cable for mobile users A Bluetooth Overview5 Bluetooth Development Bluetooth as a word derived from the 10 th century king of Denmark (Harald Blatand) As a research started in 1994 by Ericsson Mobile Communications with one goal  to relief cables carried by/


Bluetooth SIG Member Using Bluetooth® Smart to Control Embedded Systems with a Mobile Device 800-411-6596 +44-2392-232392.

and I 2 C connections Includes: Unlimited access to the online Atmosphere collaborative development platform Multi-sensor dev board USB cable (probably Type A to Micro B) 2 single-row header pins Quick Start Guide Regulatory Guide Part #: A20737x-MSDK1 Bluetooth SIG Member Atmosphere online development platform Enables developer to simultaneously generate embedded code & mobile app code in one, environment Public site & community at/


Mobile Handsets: A Panoramic Overview. Outline Introduction Handset Architecture Handset Operating Systems Networking Applications Security Risks and.

battery Botnets and DoS attacks against networks are likely in the future [62] Cybercriminals make 10× as much as security researchers! [69] The Challenges Ahead “[Because] the mobile communications field is /Bluetooth SIG, “Basics”, 2008, http://www.bluetooth.com/Bluetooth/ Technology/Basics.htmhttp://www.bluetooth.com/Bluetooth/ Technology/Basics.htm 49.Bluetooth SIG, “Profiles Overview”, 2008, http://www.bluetooth.com/Bluetooth/ Technology/Works/Profiles_Overview.htmhttp://www.bluetooth.com/Bluetooth/


Lecture 16Programming Handheld and Mobile devices 1 Programming of Handheld and Mobile Devices Lecture 16 Bluetooth for MIDlets Rob Pooley

, campus LANs Waits, retransmits in response to interference (good for data, bad for voice). Wireless Ethernet Compatibility Alliance: –www.weca.net Lecture 16Programming Handheld and Mobile devices 3 Bluetooth Set of hardware and software standards specifying how devices can communicate wirelessly in unlicensed 2.4GHz band. Optimized for 30 meters or less, Personal Area Networks (PANs). Based upon master-slave relationships in networks of up/


Pervasive Computing MIT 6.883 SMA 5508 Spring 2006 Larry Rudolph 1 Bluetooth Larry Rudolph Feb 16, 2006.

Larry Rudolph What is bluetooth? Wireless, short-range communication about 10 meters Replacement for USB cables Low power, low cost Automatically hook together mobile devices The term covers lots of things from HW to SW Pervasive Computing MIT 6.883 SMA 5508 Spring 2006 Larry Rudolph Barbie Bluetooth Headset You can use me to make and receive calls with Bluetooth 1.1 compatible mobile phones. I have/


Bluetooth Positioning using RSSI and Triangulation Methods Speaker : Shih-Chi Huang Advisor : Dr. Kai-Wei Ke 2013/12/09.

or antenna arrays to measure the angle of incoming signals send by mobile. 14 Triangulation methods - RSS RSS (Received Signal Strength), also /and with more algorithms. 30 References Yapeng Wang ; Xu Yang ; Yutian Zhao ; Yue Liu ; Laurie Cuthbert, “Bluetooth Positioning using RSSI and Triangulation Methods”, 2013 IEEE 10th Consumer Communications and Networking Conference (CCNC) Wikipedia, http://zh.wikipedia.org/wiki/Bluetooth Jonas Willaredt, “WiFi and Cell-ID based positioning - Protocols, Standards and/


Doc.: IEEE 802.15-99/033r2 Submission July 1999 Simon Baatz, University of BonnSlide 1 Integration of Bluetooth into LAN Environments Simon Baatz, Matthias.

University of Bonn http://www.cs.uni-bonn.de/IV Research on computer networks and distributed systems Focus on IP based communication protocols Bluetooth SIG member –Current work on IP network layer mobility support for Bluetooth doc.: IEEE 802.15-99/033r2 Submission July 1999 Simon Baatz, University of BonnSlide 3 Bluetooth Usage Scenarios GSM BT Data/Voice Access Points Ad Hoc Networking Cable Replacement doc/


Chapter 3 Instance and theory of Malicious code Malicious code defense in mobile networks Funded by Intel Corp.

of program execution. In order to receive or respond information to the manufacturer, Mobile Trojans must call on some communication methods of the phone. These communications include bluetooth, infrared, short message, MMS and Internet access. –In order to reduce the rate of been found by users, Mobile Trojans take use of the method that receiving multiple commands at one time, then returning the results partially. The/


Home Automation System 06T0007 Hiroshi OHSUGA. Outline About Home Automation System Related Works -Remote-controlled home automation system via Bluetooth.

for Home Automation System –Chao-Lin Wu, Wei-Chen Wang, and Li-Chen Fu,“SICE Annual Conference in Fukui“, Aug 2003, pp.3668-3673 Remote-controlled home automation system via Bluetooth home network Design communication architecture Hardware implementation Software development Server Bluetooth Module Temperature Heater Bluetooth Module Illuminating Light Bluetooth Module Curtain Bluetooth Node Sensor/Device Mobile Agent based Integrated Control Architecture for Home Automation System For –Reducing/


1.  What is a wireless network ₋ Wireless Network vs. a Wired Network ₋ The Benefits  Wireless Personal Area Network ₋ Bluetooth Architecture ₋ Bluetooth.

of networks  e.g., GSM via mobile phone - Bluetooth – laptop  It does not need any IP infrastructure  Bluetooth wireless technology is a short- range radio technology.  Bluetooth wireless technology makes it possible to transmit signals over short distances between telephones, computers and other devices and thereby simplify communication and synchronization ( تزامن )between devices.  The Bluetooth wireless technology comprises hardware, software and interoperability requirements.  Transmits at up to/


Prof. Nashaat El-Khameesy, SAMS Mobile-Commerce Introduction to M-Commerce.

Packet Data TDMA/GSM: Time Division Multiple Access, Global System for Mobile Communications (Europe) CDMA: Code Division Multiple Access Mobitex (TDMA-based) LAN: 802.11 Bluetooth Devices: Cell Phones, Palm, WinCE, Symbian, Blackberry, … Prof. Nashaat El-Khameesy, SAMS Mobile-Commerce Mobile Computing Infrastructure Screenphones—a telephone equipped with color screen, keyboard, e-mail, and Internet capabilities E-mail handhelds Wirelined—connected by wires to a network/


1 Bluetooth Indoor Location Management (BILM) Krishna Kumar Bhoutika May 2003.

gives context history. 5 Context-mediation In a device-mediated communication, most of this context information is not captured and hence lost. An external support infrastructure/framework is required to provide context information. 6 Goal An indoor support infrastructure for context aware applications Location support Enhanced service-discovery support Limited mobility support Current work: Bluetooth based location support framework. 7 Outline Definition of Location/


MITM753: Advanced Computer Networks Chapter 5 Wireless and Mobile Networks.

aligned. Does not require dish-shaped antennas. Suffers less attenuation than microwave. Applications: AM and FM radio. UHF and VHF television. Mobile phones. Walkie-talkie. Wireless networks (WiFi, WiMAX). Infrared Use transmitters / receivers that / Devices within an entertainment system. Many, many others… Bluetooth Communication and Connection Bluetooth networks are ad hoc networks. No network infrastructure (e.g. an access point). When Bluetooth-capable devices come within range of one another, an /


 This work confers an application which makes possible to use a Bluetooth enabled mobile phone to remote control home appliances such electric fan, LEDs.

required by infra-red remote control, we can use already available Bluetooth hardware. So this gives us a major advantage i.e. No extra Hardware Cost. The system basically involves communication between a mobile phone and computer application. A computer and a mobile phone can communicate with each other using ports. Similar to two islands which communicate with each other using ship ports or airports. Technically we call/


1 Mobile Communications Chapter 7: Wireless LANs  Characteristics  IEEE 802.11  PHY  MAC  Roaming .11a, b, g, h, i …  HIPERLAN  Standards overview.

of Bluetooth SIG, www.bluetooth.orgwww.bluetooth.org  1999: erection of a rune stone at Ercisson/Lund ;-)  2001: first consumer products for mass market, spec. version 1.1 released Special Interest Group  Original founding members: Ericsson, Intel, IBM, Nokia, Toshiba  Added promoters: 3Com, Agere (was: Lucent), Microsoft, Motorola  > 2500 members  Common specification and certification of products (was: ) 82 History and hi-tech… 1999: Ericsson mobile communications AB/


UNIT-IV CONTEXT AWARE COMPUTING & WEARABLE COMPUTING Adaptability – Mechanisms for Adaptation-Functionality and Data – Transcoding – Location Aware Computing.

SEM/ NE7002/MPC/UNIT-IV/PPT/VERSION 1.1 110 4. Integrated and Additional Solutions for Health BAN Communications Current e-health solutions exploit mainly ZigBee and Bluetooth technologies Further enhancement of these systems can be achieved by developing integrated solutions where multiple wireless interfaces on a single mobile device are exploited to communicate with different networks at the same time For this purpose, the Simple/


7.1 Prof. Dr.-Ing. Jochen H. Schiller MC Mobile Communications Chapter 7: Wireless LANs Characteristics IEEE (PHY,

b, g, h, i, n … z) Bluetooth / IEEE 802.15.x IEEE 802.16/.20/.21/.22 RFID Comparison 7.2 Prof. Dr.-Ing. Jochen H. Schiller www.jochenschiller.de MC - 2009 Mobile Communication Technology according to IEEE (examples) Local wireless networks WLAN/interface available everywhere Radio typically using the license free ISM band at 2.4 GHz Advantages experience from wireless WAN and mobile phones can be used coverage of larger areas possible (radio can penetrate walls, furniture etc.) Disadvantages very limited /


Wireless Networks Spring 2005 Bluetooth and Mobile IP.

links PARK state (low-power): releases AM_ADDR but stays synchronized with master Wireless Networks Spring 2005 Bluetooth Audio Voice encoding schemes: oPulse code modulation (PCM) oContinuously variable slope delta (CVSD) modulation Choice/ to current end-systems and routers required omobile end-systems can communicate with fixed systems Security oauthentication of all registration messages Efficiency and scalability oonly little additional messages to the mobile system required (connection typically/


®. Audio Devices Compatible with IBM® A broad range of Plantronics® wireless, USB and Bluetooth audio devices deliver full compatibility and remote call.

® wireless, USB and Bluetooth audio devices deliver full compatibility and remote call control for IBM® Lotus® Sametime® and Sametime Unified Telephony (SUT). Plantronics Solutions Savi® Wireless Headset Systems Integrate PC and desk phone communications with one wireless headset Blackwire USB Corded Headsets Connect to the desk phone with performance, style, and comfort all in one wireless headset Voyager PRO UC Bluetooth Headsets Unify communications between PC and mobile phone calls Calisto/


Mobile Communications Satellite Systems

.-Ing. Jochen Schiller, http://www.jochenschiller.de/ MC SS02 7.15 Prof. Dr.-Ing. Jochen Schiller Freie Universität Berlin Institut of Computer Science Bluetooth Mobile Communications 2002 Idea Universal radio interface for ad-hoc wireless connectivity Interconnecting computer and peripherals, handheld devices, PDAs, cell phones – replacement of IrDA Embedded in other devices, goal: 5€/device Short range (10 m), low power consumption, license/


Working Towards the Peaceful Coexistence of Wireless PANs, LANs, and WANs Northcon 2002 Tutorial Rob Roy Sr. Director, Business Development & Tech Strategy.

These WPANs address wireless networking of portable and mobile computing devices such as PCs, Personal Digital Assistants (PDAs), peripherals, cell phones, pagers, and consumer electronics; allowing these devices to communicate and interoperate with one another. The goal /hopping requires FCC rules and Bluetooth spec changes n But supports voice well n No data degradation n System solution (MAC+PHY) requires collaboration (direct communication) and antenna design Convergence of WPAN, WLAN, and WWAN – Rob Roy/


University of Eastern Finland School of Computing P.O. Box 111 FIN- 80101 Joensuu Tel. +358 13 251 7959 fax +358 13 251 7955 www.uef.fi/cs Bluetooth Mikko.

7959 fax +358 13 251 7955 www.uef.fi/cs One master may communicate with 7 slaves. Master transmits in even slots and receives in odd slots. Slave receives in even slots and transmits in odd slots. University of Eastern Finland School of Computing P.O/358 13 251 7955 www.uef.fi/cs Health concerns Class 2 and Class 3 Bluetooth devices are considered less of a potential hazard than mobile phones, and class 1 may be comparable to that of mobile phones. University of Eastern Finland School of Computing P.O. Box /


Wireless Security in an Always- On Mobile World April 1, 2003.

Handheld Device Security Handheld Devices Security m-commerce Security What’s the Difference? Their small size, low cost, and mobility makes them more likely to be stolen, misplaced, or lost. Physical security controls for desktop computers do /access points such as the user interface, USB, expansion modules, wireless modems, Bluetooth, IR ports, and 802.11 connectivity. Handheld devices have a number of communication ports, but limited capabilities in authenticating the devices with which they exchange data/


TJ OConnor Nate Grunzweig David Brasefield. The views expressed in this presentation are those of the author and do not reflect the official policy or.

you have been  Your email  Your texts from last night  And we don’t give it any protection  But it could be worse…  There are some things that just shouldn’t be mobile devices…. Should a credit card system really have a radio whose main / do things like….. (well university student things)  Don’t even ask about my Mom.  Any communications activity to the device is suspect.  Doesn’t mean every Bluetooth NAME_REQ is bad though… this happens all the time.  How do we reduce false positives in logging?/


Agenda Introduction Positioning of PAN/LAN/WAN

Floppy Audio IR USB Video Docking Power Tomorrow: Fewer Cables Bluetooth USB Video Docking Power Adds weight and cost Decreases reliability Reduces weight and cost Increases reliability Future Usage Scenarios Personal Area Networking Spontaneous / ad-hoc networking Computer Supported Cooperative Work (CSCW) environments Workgroup collaboration Between many different devices PC, PDA, Printer, Mobile phone, Communicator, Digital Camera (Still & Video) Digital TV, MP3 Player etc… Slave/


Chapter 11 Ubiquitous Communication

Telecoms Networks such as GSM, UTMS Wireless data networks: WiFi, Bluetooth, Zigbee etc In addition will cover Power Line Communication (PLC) Personal Area Networks (PAN) Body Area Networks (BAN) Mobile Users Networks Ubiquitous computing: smart devices, environments and interaction Pervasive Telecoms Networks Ubiquitous computing: smart devices, environments and interaction Pervasive Wireless Networks Challenges Signal Transmission Overlapping Networks Power Consumption & Transmission Efficiency Soft/


© 2007 Levente Buttyán and Jean-Pierre Hubaux Security and Cooperation in Wireless Networks Chapter 1: The security of existing.

) : STA  AP: EAP res ID ( IMSI / pseudonym ) STA  AP: EAP res ( nonce ) AP: [gets two auth triplets from the mobile operator’s AuC] AP  STA: EAP req ( 2*RAND | MIC 2*Kc | {new pseudonym} 2*Kc ) STA  AP: EAP res ( /.2 WiFi LANs 1.3.3 Bluetooth Security and Cooperation in Wireless Networks Chapter 1: The security of existing wireless networks 54/60 Bluetooth  Short-range communications, master-slave principle  Eavesdropping is difficult: –Frequency hopping –Communication is over a few meters only /


1 ITC242 – Introduction to Data Communications Wireless Network Week 7.

standards Explain the basic components of Bluetooth and Bluetooth usage models. 4 The global goal regional metropolitan area campus-based in-house vertical handover horizontal handover integration of heterogeneous fixed and mobile networks with varying transmission characteristics 5 Applications I Vehicles –transmission of news, road condition, weather, music via DAB( Digital Audio Broadcasting) –personal communication using GSM(Global System for Mobile communications ) –position via GPS(Global Positioning/


Architecture of Mobile eLearning Services Ivan Minov, Stanimir Stoyanov.

ACL messages Working on Prototype version of: – InfoStation agents and communication between them; –Bluetooth support of InfoStation; –Communication protocol with mobile device; –Mobile application using Push Registry. Future Plans Advance in support of the Bluetooth located in the InfoStation. Development of the communication protocol between InfoStation and a mobile device. Advance in the Agent and Service level. Adding WiFi communication, like Bluetooth. Test under real conditions. Thank you for your/


Chapter 8 Mobile Commerce

Application or database server Large enterprise application server GPS locator used to determine the location of mobile computing device carrier Mobile Computing Infrastructure (cont.) Software Microbrowser Mobile client operating system (OS) Bluetooth—a chip technology and WPAN standard that enables voice and data communications between wireless devices over short-range radio frequency (RF) Mobile application user interface Back-end legacy application software Application middleware Wireless middleware/


Copyright © 2003, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved. 1 Chapter 15 Recent Advances.

Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved. 23 Multicast in Wireless Networks Multicast for Mobility Protocol (MMP): It combines Mobile IP and CBT where the former controls communication up to the foreign network, and the latter manages / dynamic packet segmentation to mitigate interference effects on Bluetooth devices. Copyright © 2003, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved. 41 Bluetooth Networks Bluetooth standard defines different packet types to adjust to /


Copyright © 2003, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved Wireless LANs and PANs Chapter 14.

cell radio employs 162 frequency hopping channels. Copyright © 2003, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved Ricochet Mobile Communication Network Network interconnection facility Microcell radios on street lights, utility poles Wireless access point Name /tailored to minimize power consumption Copyright © 2003, Dr. Dharma P. Agrawal and Dr. Qing-An Zeng. All rights reserved Architecture of Bluetooth System and Scatternet Piconet 1 Piconet 4 Piconet 3 Piconet 2 M2M2 M1M1 M3M3 M4M4 /


SM3121 Communications Technology Mark Green School of Creative Media.

School of Creative Media Introduction  Most mobile devices need to communicate  One of the main reasons for having them  Mobile phone isn’t very useful if you can’t call anyone!!  There are numerous communications systems that we can use, depend upon range and cost Introduction  Technologies: Infrared: very local, but very cheap Infrared: very local, but very cheap Bluetooth: short range (10m), becoming widely available/


Bluetooth Introduction Guoxin Zheng School of Communication and Information Engineering Shanghai University.

Bluetooth Introduction Guoxin Zheng School of Communication and Information Engineering Shanghai University Architecture Overview Overview Technically Topology Radio/Baseband Protocol /s gross rate Topology Scatternet –Devices can share piconets –Interpiconet communication –Instant Ad-hoc connections –10 Piconets –Aggregated 10 Mb/s Topology Mobile Topology –All device are mobile –Walknet: –The whole piconet cell is mobile –Make and Brake Connections Topology Topology, Scatternet master slave 1 slave 2 slave/


PDS 無線網路與行動計算簡介 Introduction to Wireless Networks and Mobile Computing 王國禎 國立交通大學 資訊工程系 行動計算與寬頻網路實驗室

.comhttp://mobileandpervasive.blogspot.com PDS 行動計算之主要研究挑戰 Mobility (registration vs. searching) Variable communication conditions –fading –noise –interference Energy limitations PDS 行動計算與行動通信 Mobile communications involve –Physical layer: IR, radio –MAC layer: CSMA/CA, FDMA, TDMA, CDMA, W-CDMA, OFDM, OFDMA Mobile computing involves –Mobile networking (DL, NL, TL) –Software applications (AL) PDS IEEE 802.11 vs. HomeRF PDS PDS Bluetooth Major joint computing and telecomm industry initiative Plan to deliver/


JMA F2005 Ebbe Elsborg Programming context aware Mobile Phones Agenda: Introduction to Bluetooth Methods for connecting Importent classes.

(10 meter) radio communication to be plugged into computers, printers, mobile phones, etc. IEEE 802.15 www.bluetooth.org (/spec)www.bluetooth.org JMA F2005 Ebbe Elsborg elsborg@itu.dk Bluetooth - characteristics Bluetooth is wireless and automatic. Bluetooth is inexpensive. The ISM band (2.4 GHz) that Bluetooth uses is regulated, but unlicensed. Bluetooth handles both data and voice. Signals are omni-directional and can pass through walls and briefcases. Bluetooth is spread spectrum/


ITC Software’s areas of activity and projects realized www.itcsoftware.com.

describes usage scenarios of this product for entertainment purposes: search for acquaintances, message exchange and gaming. Currently, more and more people use mobile devices for their work and fun. One of the determinative components of the term “mobile” - appears wireless communication. Among the number of wireless technologies, Bluetooth technology stands out and becomes more and more popular. Currently this technology is supported by a large variety of devices. Key/


Mobile Communications Chapter 2: Wireless Transmission  Types of electromagnetic carriers  Advantages and disadvantages of wireless communication  Basics.

feet (90 meters) – Bandwidth: 54 Mbps – Can also include Voice over IP (VoIP)  Wireless network interface card (Wireless NIC) – Sends and receives data over radio waves  Smartphone – Combination mobile phone and personal digital assistant (PDA) Mobile Communications: Wireless communications A Wireless World Mobile Communications: Wireless communications Bluetooth and Ultra Wide Band Radio frequency identification device (RFID) tags – Small chips containing radio transponders Can be used to track inventory/


Asstt. Professor Adeel Akram. Bluetooth Consortium: Ericsson, Motorola, Intel, IBM, Nokia, Toshiba… Scenarios: connection of peripheral devices loudspeaker,

1-bit sequential numbering schemes Header error control (HEC) – 8-bit error detection code State Transition Diagram Bluetooth Audio Voice encoding schemes: Pulse code modulation (PCM)PCM Continuously variable slope delta (CVSD) modulationCVSD Choice / to current end-systems and routers required mobile end-systems can communicate with fixed systems Security authentication of all registration messages Efficiency and scalability only little additional messages to the mobile system required (connection typically/


© Levente Buttyán and Jean-Pierre Hubaux Security and Cooperation in Wireless Networks The security of existing wireless networks.

- GSM; - UMTS; - LTE; WiFi LANs; Bluetooth; Mobile Networks – Module H1 Security and Cooperation in Wireless Networks Chapter 1: The security of /Mobile Station or Network) Receiver (Network or Mobile Station) CIPHERTEXT SEQUENCE A5 CIPHERING SEQUENCE KcKc FRAME NUMBER PLAINTEXT SEQUENCE 1.3.1 Cellular networks GSM security 10/85 Security and Cooperation in Wireless Networks Chapter 1: The security of existing wireless networks Problems with GSM security  Only provides access security – communications and/


Module - 3 Computer Fundamentals, telecommunications, and Networks.

Communication Email Message broadcast Remote computing Distributed processing (GRID Computing) Bluetooth devices Bluetooth is a telecommunication signal used within a 100 m range. Bluetooth exists in many products, such as telephones, the Wi-Fi, PlayStation 3, and recently in some high definition watches, modems and/ Success Factors It is crucial that WiMax becomes an important building block to enable fixed/mobile convergence and to ensure its success. Ability to offer ease of use is crucial to the success/


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