Frustrated by unsecured Wi-Fi, a fix is on the

way….

Presented by: VISHAL S PAI (1NH11EC124)

NEW HORIZON COLLEGE OF ENGINEERING

Contents

IntroductionWiGig alliance LogoNeed For faster Wireless ConnectivityWi-Gig specificationStructure of Wi-Gig

Physical Layer Medium Access Layer Protocol Adaptation Layer

Usage ModelsConclusion

Introduction

WiGig (Wireless Gigabit Alliance) is the new brand established by the Wi-Fi alliance for the IEEE 802.11ad standard.

It is an extremely high-speed, but short range, local networking technology.

Enables data rates up to 7Gbps, more than 10 times the speed of the fastest Wi-Fi network based on IEEE 802.11n.

WiGig alliance Logo

The Wi-Fi Alliance created a separate, unique logo for WiGig to avoid confusion between the standards.

Need For faster Wireless Connectivity

The Wireless world is evolving rapidly in response to the explosion of intelligent devices, applications and data.

  Support for data transmission rates up to 7 Gbps • more than 10 times the speed of the fastest

Wi-Fi networks based on IEEE 802.11n

It operates in the unlicensed 60 GHz frequency band • More spectrum available than the 2.4 GHz and

5 GHz bands used by existing Wi-Fi products.• This allows wider channels that support faster

transmission speeds

Specification

Based on IEEE 802.11 • Provides native Wi-Fi support • Enables devices to transparently switch between

802.11 networks operating in any frequency band including 2.4 GHz, 5 GHz and 60 GHz

Support for beamforming, maximizing signal strength

and enabling robust communication at distances beyond 10 meters

Advanced security using the Galois/Counter Mode of the AES encryption algorithm

Support for high-performance wireless implementations of HDMI, Display Port, USB and PCIe

Structure of Wi-Gig

Physical Layer(PHY)Enables low power and high performance WiGig devices.

Medium Access Control (MAC) LayerSupports Advanced usage models.

Protocol Adaption Layers(PALs)Allows wireless implementations.

WiGig specification defines four channels, each 2.16 GHz wide.

These wide channels support applications such as uncompressed video transmission.

Supports 2types of modulation & coding schemes(MCS).1. Orthogonal frequency-division multiplexing (OFDM) 2. Single carrier (SC)

The schemes share common elements such as preamble and channel coding. This reduces implementation complexity for manufacturers of WiGig devices.

Physical Layer (PHY)

Orthogonal frequency-division multiplexing (OFDM)

It supports communication over longer distances with greater delay spreads.

providing more flexibility in handling obstacles and reflected signals.

Furthermore, OFDM 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.

Medium Access Control(MAC) layer

Network Architecture. Power Management.Advanced Security.

The MAC layer of the WiGig specification includes: New features that support

advanced usage models Facilitate integration with Wi-Fi

networks Reduce power consumption Provide strong security

   The specification defines a new network architecture

that enables two devices to communicate directly with each other allowing

• New uses such as rapidly synchronizing two devices .

• Transmitting audio-visual data to a projector or TV.

Network Architecture

Support for beamforming is defined within the PHY and MAC layers of the WiGig specification.

WiGig Beamforming

Beamforming

• Devices that support beamforming focus their signals toward each client, concentrating the data transmission so that more data reaches the targeted device instead of radiating out into the atmosphere.

• Plasma silicon Antenna.

Protocol Adaptation Layer

Defined by the WiGig Alliance to support specific data and display standards over 60 GHz

PALs allow wireless implementations of these standard interfaces that run directly on the WiGig MAC and PHY

It can be implemented in hardware

The initial PALs are audio-visual (A/V), which defines support for

HDMI and DisplayPort,

input-output (I/O), which defines support for USB and PCIe

Usage Models

WiGig offers unrivaled raw speed, interference resistance, good range, high capacity networking, multi-gigabit real throughput in a handheld power envelope, and near-wire equivalent latency.

Given these benefits, WiGig is well-suited for a broad range of applications, from tri-band networking (2.4/5/60 GHz) to wireless storage and edge caching to wireless docking.

Conclusion