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WIRELESS NETWORKS AND MOBILE COMPUTING

DEPARTMENT OF INFORMATION TECHNOLOGYWIRELESS NETWORKS AND MOBILE COMPUTINGB Tech IV Year I Semester (JNTUH-R15)PreparedbyMr. E. Sunil ReddyAssistant Professor, ITINSTITUTE OF AERONAUTICAL ENGINEERING(Autonomous)Dundigal, Hyderabad -500 0431 UNIT I Introduction to network Technologies and Cellular Communications HIPERLAN: Protocol Architecture, Physical Layer, Channel-Access Control sub-layer, MAC sub layer, Information Bases and Networking WLAN: Infrared vs. Radio Transmission, Infrastructure and Ad Hoc NETWORKS , IEEE Bluetooth; User Scenarios, Physical Layer, MAC Layer, Networking, Security, Link Management. GSM: MOBILE Services, System Architecture, Radio Interfaces, Protocols, Localization, Calling, Handover, Security, New Data Services. MOBILE COMPUTING (MC): Introduction to MC, Novel Applications, Limitations and MOBILE Communication MOBILE COMPUTING Navel Applications Location dependent services Effects of device portability WIRELESS n/w s in comparison with fixed n/w s Limitations Architecture (simple reference model)Syllabus 3 Goal of MOBILE COMPUTING Peopleandtheirmachinesshouldbeabletoacce ssinformationandcommunicatewitheachother easilyandsecurely,inanymediumorcombinati onofmedia voice,data,image,video,ormultimedia anytime,anywhere,inatimely, COMPUTING Mobilecomputingreferstocomputinginadistr ibutedsysteminwhichsomeprocessesorproces sorscanmove.

Base Station Subsystem (BSS) Base Station Subsystem is composed of two parts that communicate across the standardized Abis interface allowing operation between components made by different suppliers 1. Base Transceiver Station (BTS) 2. Base Station Controller (BSC) 1. Base Transceiver Station (BTS):

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