1. Wireless Universal Serial Bus By : MAHADEVASWAMY Cet DSP m.tech 1/2/2011 1 JAIN UNIVERSITY CET DIGITAL SIGNAL PROCESSING
2. Outline: INTRODUCTION REASONS FOR WIRELESS USB ARCHITECTURAL OVERVIEW POWER MANAGEMENT SECURITY CONCLUSION REFERENCES 1/2/2011 2 CET DIGITAL SIGNAL PROCESSING
3. INTRODUCTION : Wireless USB is a wireless technology which enables the high speed computer peripheral interface wireless. Wireless USB will be based on the Ultra-Wideband (UWB) & radio efforts by the WiMedia Alliance. Wireless USB interest group was formed in 2004. Wireless USB has an advanced power management system which consumes very low power. 1/2/2011 3 CET DIGITAL SIGNAL PROCESSING
4. Introduction Cont… UWB supports high bandwidth (480 Mbps) but only at limited range (~3m). Applying this wireless technology to usb frees the user from worrying about the cables; where to find them, where to plug them in, how to string them so they don’t get tripped over, how to arrange them so they don’t look like a mess. Wireless USB is used in game controllers, printers, scanners, digital cameras, MP3 players, hard disks and flash drives. 1/2/2011 4 CET DIGITAL SIGNAL PROCESSING
6. Reasons For Wireless USB Wires are restrictive. Multiple wires can be a hassle. Wires slower than wireless solutions. Inadequacy of current wireless solution Bluetooth. Bandwidth of 3 Mbps not enough for higher demand applications (Video, HDTV, Monitor). Wi-Fi. Expensive. Too much power usage for mobile devices. 1/2/2011 6 CET DIGITAL SIGNAL PROCESSING
7. ARCHITECTURAL OVERVIEW USB System Description. A USB system consists of a host and some number of devices all operating together on the same time base and the same logical interconnect. A USB system can be described by three definitional areas: USB interconnect USB devices USB host USB interconnect: Topology Data Flow Models USB Schedule 1/2/2011 7 CET DIGITAL SIGNAL PROCESSING
8. Hub and Spoke topology Topology : Wireless USB connects USB devices with the USB host using a 'hub and spoke' model. The Wireless USB host is the 'hub' at the center, and each device sits at the end of a 'spoke‘. 1/2/2011 8 CET DIGITAL SIGNAL PROCESSING
9. Features of wireless USB technology: High performance Simple, low-cost implementation An easy migration path Frequency: 3.1 GHz to 10.6 GHz (cont.) Band Groups 1 & 2: Longer range apps Bands Groups 3 & 4: Shorter range apps 1/2/2011 9 CET DIGITAL SIGNAL PROCESSING
10. POWER MANAGEMENT The power target for WUSB radio will be introduced at less than 300mW. Device Power Management Host Power Management 1/2/2011 10 CET DIGITAL SIGNAL PROCESSING
11. SECURITY: Encryption Methods The standard method of encryption for the first generation of Wireless USB is AES-128 Counter with CBC- Mac Wireless USB also supports public key encryption, but only for authentication The CCM encryption suite provides 128 bits of security for run-time operation. 1/2/2011 11 Keyboard MCU Receiver MCU 128-bit Key 128-bit Key Cipher Stream WUSB Cipher Stream WUSB Data Payload + Data Payload + CET DIGITAL SIGNAL PROCESSING
13. Wireless USB : Applications 1/2/2011 13 CET DIGITAL SIGNAL PROCESSING
14. CONCLUSION: Wireless USB offers more band width. Its power management and security features will enable it to wipe out all the current wireless personal interconnect. Ease of installation and usage will makes Wireless USB the most accepted Wireless technology by the consumers. 1/2/2011 14 CET DIGITAL SIGNAL PROCESSING
15. REFERENCES www.usb.org www.google.co.in www.wikipedia.org www.intel.com www.techonline.com 1/2/2011 15 CET DIGITAL SIGNAL PROCESSING
