Mobile communication &computing
- 1. Mobile Communication &Computing Sub. Code - CSC702 Asst.Prof. Rupali Lohar Dept. of Computer Science & Engineering B. R. Harne College Of Engineering & Technology, Karav, Post Vangani (W Tal Ambernath, Mumbai, Maharashtra 421503
- 2. •Introduction to Mobile Computing •Mobile Communication •Mobile Computing – Classification •Advantages of MCC •Telecommunication Generation
- 3. Mobile Computing:- • Mobile Computing is a technology that allows transmission of data, voice and video via a computer or any other wireless enabled device without having to be connected to a fixed physical link. The main concept involves − • Mobile communication • Mobile hardware • Mobile software
- 4. Mobile communication • The mobile communication in this case, refers to the infrastructure. These would include devices such as protocols, services, bandwidth, and portals necessary to facilitate and support the stated services. The data format is also defined at this stage. This ensures that there is no collision with other existing systems which offer the same service.
- 5. Mobile Hardware • Mobile hardware includes mobile devices or device components that receive or access the service of mobility. They would range from portable laptops, smartphones, tablet Pc's, Personal Digital Assistants.
- 6. Mobile software • Mobile software is the actual program that runs on the mobile hardware. It deals with the characteristics and requirements of mobile applications. This is the engine of the mobile device. In other terms, it is the operating system of the appliance. It's the essential component that operates the mobile device.
- 7. Mobile Computing – Classification Personal Digital Assistant (PDA) • The main purpose of this device is to act as an electronic organizer or day planner that is portable, easy to use and capable of sharing information with your computer systems. • PDA is an extension of the PC, not a replacement. These systems are capable of sharing information with a computer system through a process or service known as synchronization. Both devices will access each other to check for changes or updates in the individual devices. The use of infrared and Bluetooth connections enables these devices to always be synchronized.
- 8. Smartphones • Smartphones have the capability to run multiple programs concurrently. These phones include high-resolution touch screens, web browsers that can access and properly display standard web pages rather than just mobile-optimized sites, and high-speed data access via Wi-Fi and high speed cellular broadband.
- 9. Tablet PC and iPads • This mobile device is larger than a mobile phone or a PDA and integrates into a touch screen and is operated using touch sensitive motions on the screen. They are often controlled by a pen or by the touch of a finger. They are usually in slate form and are light in weight. Examples would include ipads, Galaxy Tabs, Blackberry Playbooks etc.
- 10. Major advantages of Mobile Computing • Location Flexibility • Saves Time • Enhanced Productivity • Ease of Research • Entertainment • Business Processes • Education • Security System
- 11. Telecommunication Generation • Since the introduction of first commercial mobile phone in 1983 by Motorola, mobile technology has come a long way
- 12. 1G Technology • Most popular 1G system during 1980s • Advanced Mobile Phone System (AMPS) • Nordic Mobile Phone System (NMTS) • Total Access Communication System (TACS) • European Total Access Communication System (ETACS)
- 13. Key features (technology) of 1G system • Frequency 800 MHz and 900 MHz • Bandwidth: 10 MHz (666 duplex channels with bandwidth of 30 KHz) • Technology: Analogue switching • Modulation: Frequency Modulation (FM) • Mode of service: voice only • Access technique: Frequency Division Multiple Access (FDMA)
- 14. Disadvantages of 1G system • Poor voice quality due to interference • Poor battery life • Large sized mobile phones (not convenient to carry) • Less security (calls could be decoded using an FM demodulator) • Limited number of users and cell coverage • Roaming was not possible between similar systems
- 15. 2G Technology • digital technology • Global System for Mobile communication (GSM) • supporting up to 14.4 to 64kbps (maximum) data rate • Code Division Multiple Access (CDMA) system
- 16. Key features of 2G system • Digital system (switching) • SMS services is possible • Roaming is possible • Enhanced security • Encrypted voice transmission • First internet at lower data rate
- 17. Disadvantages of 2G system •Low data rate •Limited mobility •Less features on mobile devices •Limited number of users and hardware capability
- 18. 3G Technology • Data speeds of 144 kbps to 2 Mbps • High speed web browsing • Running web based applications like video conferencing, multimedia e-mails, etc. • Fast and easy transfer of audio and video files • Higher data rate • Enhanced security, more number of users and coverage • Mobile app support • Multimedia message support • Location tracking and maps • TV streaming • High quality 3D games
- 19. Disadvantages of 3G systems • Expensive spectrum licenses • Costly infrastructure, equipment's and implementation • Higher bandwidth requirements to support higher data rate • Costly mobile devices • Compatibility with older generation 2G system and frequency bands
- 20. 4G Technology • Key features of 4G system • Much higher data rate up to 1Gbps • Enhanced security and mobility • Reduced latency for mission critical applications • High definition video streaming and gaming • Voice over LTE network VoLTE (use IP packets for voice)
- 21. Disadvantages of 4G system • Expensive hardware and infrastructure • Costly spectrum (most countries, frequency bands are is too expensive) • High end mobile devices compatible with 4G technology required, which is costly • Wide deployment and upgrade is time consuming
- 22. Key features of 5G technology • Ultra fast mobile internet up to 10Gbps • Low latency in milliseconds (significant for mission critical applications) • Total cost deduction for data • Higher security and reliable network • Uses technologies like small cells, beam forming to improve efficiency • Forward compatibility network offers further enhancements in future • Cloud based infrastructure offers power efficiency, easy maintenance and upgrade of hardware