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Wi-gig
- 1. Presented by D.MAHESH D.DINESH Gayatri vidya parishad college of engineering(A)
- 2. INTRODUCTION The Wireless Gigabit Alliance - commonly called WiGig - is an organization devoted to the development and promotion of wireless communications in the 60 GHz band. Among the unlicensed frequency bands available for wireless networks, 60 GHz is uniquely suited for carrying extremely high data rates. WiGig has developed a medium access control (MAC) layer, a physical (PHY) layer, and several protocol adaptation layers (PALs) to enable interoperable devices that take advantage of these extremely high data rates.
- 3. Why WiGig? • The 60 GHz band has more spectrum available than the 2.4 GHz and 5 GHz bands • Allows to connect all devices wirelessly • Low power consumption • The demand for • Higher data rates • High capacity • Low latency
- 4. Specification: Support for data transmission rates up to 7 Gbps Advanced power management Multiband operation Support for beamforming Advanced security
- 6. Modulation schemes: ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING(OFDM) Supports communication over longer distances with greater delay spreads, providing more flexibility in handling obstacles and reflected signals Allows the greatest transmission speeds of up to 7 Gbps SINGLE CARRIER(SC) Single carrier (SC) typically results in lower power consumption, so it is often a better fit for small, low- power handheld devices SC supports transmission speeds up to 4.6 Gbps.
- 7. Physical layer: Spectrum availability in various countries • The 802.11ad specification defines four channels, each 2.16 GHz wide – 50 times wider than the channels available in 802.11n. • wide channels enable 60 GHz devices to support applications that require extremely fast communication with low power consumption
- 8. Medium access control layer(MAC layer) Network Architecture Seamless multiband operation Power management Advanced security
- 9. Security: Conventional WiFi WEP with 64bit or 128 bit encryption Strength is relatively easy to break WPA_PSK(WPA-pre shared key) is less compatibile WiGig WiGig CERTIFIED devices will use Galois/ Counter Mode, a highly- efficient mode of encryption that is designed to support higher communication speeds Advanced Encryption Standard (AES) can be implemented in hardware for performance and efficiency
- 10. Protocol adaptation layer (PAL) Audio-Visual: WiGig Display Extension (WDE) Input-Output (I/O) PALs: WiGig Bus Extension WiGig SD Extension WiGig Serial Extension
- 11. Beamformimg: Signals in the 60 GHz band are more susceptible to disruption from physical barriers than at lower frequencies. The IEEE 802.11ad specification addresses this challenge using adaptive beamforming, a technique that enables robust multi-gigabit communications at distances greater than 10 meters
- 12. Applications:
- 13. Drawbacks: Limited range Needs beamforming susceptible to rain attenuation Degradiation of quality while moving
- 14. Summary: WiGig uses the unlicensed 60 GHz band Provide data rates up to 7 Gbps. Products with both Wi-Fi and WiGig integration will be able to transparently switch among 2.4 GHz, 5 GHz and 60 GHz networks ensuring optimal performance. delivers instant, seamless, high speed (up to 7 Gbps) wireless docking replaces cables for many devices including HD monitors, USB storage, and keyboards
- 16. Any Queries ?