The Wireless Revolution (1).pptx lecture

technology

1. The Wireless Revolution: Transforming Tomorrow

2. Mobile phones have become mobile platforms for delivering digital data, used for recording and downloading photos, video and music, Internet access, and transmitting payments. An array of technologies provides high-speed wireless access to the Internet for PCs and other wireless handheld devices and cell phones. Businesses increasingly use wireless to cut costs, increase flexibility, and create new products and services. The Wireless Revolution

3. Mobile Versus Fixed-line Subscribers Worldwide Figure 9-1

4. Wireless communication helps businesses easily stay in touch with customers, suppliers, and employees. Wireless networking increases worker productivity and output, as workers take less time to establish contact with people and to access information. Companies can save on wiring offices, moving, and making network changes by using wireless networks. Business Value of Wireless Networking

5. Global System for Mobile Communication (GSM) Code Division Multiple Access (CDMA) 1G: Analog cellular networks for voice communication 2G: Digital wireless networks, primarily for voice communication; limited data transmission capability – Third-generation (3G) networks • Suitable for broadband Internet access • 144 Kbps – 2Mbps – 4G networks • Entirely packet-switched • 100 Mbps – 1Gbps Cellular Network Standards and Generations Standards: Cellular Generations:

6. Explore the Impact of 5G, IoT, Wi-Fi 6, and Bluetooth in Wireless Evolution

7. Wireless computer networks and Internet access IEEE 802.15 (Bluetooth) for the Personal Area Network (PAN) Can link up to 8 devices in 10-m area Low power requirements

8. WIFI IEEE 802.11 (Wi-Fi) for the Local Area Network (LAN) IEEE 802.16 ( WiMax ) for the Metropolitan Area Network (MAN) IEEE 802.20 (proposed) standard for the Wide Area Network (WAN) Three standards: 802.11a, 802.11b, 802.11g Infrastructure mode: Devices use access point to communicate with wired network Ad-hoc mode (peer-to-peer): Wireless devices communicate directly with each other

9. M-commerce: The use of the Internet for purchasing goods and services and also for transmitting messages using wireless mobile devices Mobile computing: Enables internet-enabled cell phones, PDAs, and other wireless computing devices to access digital information on the Internet from any location M-COMMERCE AND MOBILE COMPUTING

10. Wireless supply chain management systems: Provide simultaneous accurate information about demand, supply, production, and logistics as goods move among supply chain partners Radio Frequency Identification (RFID) systems: Provide a powerful technology for tracking the movement of goods throughout the supply chain Wireless Supply Chain Management (SCM) and Radio Frequency Identification (RFID)

11. Figure 9-10 How RFID Works

12. Radio frequency identification (RFID) – Use tiny tags with embedded microchips containing data about an item and location, and antenna – Tags transmit radio signals over short distances to special RFID readers, which send data over network to computer for processing – Active RFID: Tags have batteries, data can be rewritten, range is hundreds of feet, more expensive – Passive RFID : Range is shorter, also smaller, less expensive, powered by radio frequency energy

13. A WIRELESS SENSOR NETWORK Figure 9-11 The small circles represent lower-level nodes and the larger circles represent highend nodes. Lower level nodes forward data to each other or to higher-level nodes, which transmit data more rapidly and speed up network performance.

14. Thank you