FROM KNOWLEDGE GENERATION TO SCIENCE- BASED INNOVATION

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Crystal King
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Technology Transfer and ValorisaGon Advanced

1 FROM KNOWLEDGE GENERATION TO SCIENCE- BASED INNOVATION Research and Technological Development Technology Transfer and ValorisaGon Advanced Training ConsulGng Pre- incubagon of Technology- based Companies

2 From Knowledge GeneraGon To Science- based InnovaGon Trends: ac Luís Pessoa INESC TEC TelecommunicaGons and MulGmedia Unit Research and Technological Development Technology Transfer and ValorisaGon Advanced Training ConsulGng Pre- incubagon of Technology- based Companies

3 Outline Wireless Mee)ng 2013 Aveiro, 21 March 2013 What is ac? standards evolu)on Spectral alloca)on First genera)on devices in 2013 Downlink Mul)user MIMO and beamforming Opportuni)es and Threats ad/WiGig Conclusion 3

4 What is ac? Wireless Mee)ng 2013 Aveiro, 21 March ac is an improved version of n offering higher speeds over wider bandwidths, PHY and MAC improvements Targeted at 5 GHz, up to 6.93Gbit/s Backwards compa)ble with 11n/11a Technology Mandatory OpGonal Bandwidth 20, 40, 80 MHz 160, NC: MHz MIMO (Number of spa)al streams) Client: 1 AP: 2 SU: up to 8 MU: up to 4 per user MCS (256- QAM) Enhanced Feature New Feature Tx Beamforming DL MU- MIMO 4

5 Wireless Mee)ng 2013 Aveiro, 21 March Standards Evolu)on Year Standard Datarate (Mbit/s) Freq. 20MHz 40MHz (GHz) SpaGal streams Notes 1999 b CCK 1999 a OFDM: 64- QAM 2003 g OFDM: 64- QAM 2009 n /5 4 MIMO OFDM: 64- QAM 5

6 Standards Evolu)on Wireless Mee)ng 2013 Aveiro, 21 March 2013 Year Standard Datarate (Mbit/s) 20MHz 40MHz 80MHz Freq. (GHz) SpaGal streams 1999 b CCK Notes 1999 a OFDM: 64- QAM 2003 g OFDM: 64- QAM 2009 n /5 4 MIMO OFDM: 64- QAM 2013/ 2014 ac MIMO OFDM: 256- QAM 6

7 Wireless Mee)ng 2013 Aveiro, 21 March 2013 Spectral alloca)on 7

8 Wireless Mee)ng 2013 Aveiro, 21 March 2013 First genera)on devices Bandwidths: 20, 40, 80 MHz Modula)on: 256- QAM 3 streams Up to 1.3Gbit/s Interoperability with 11n and 11a using RTS- CTS extensions Dynamic bandwidth selec)on Increased sensi)vity of the clear channel assessment (CCA) No DL MU- MIMO Second genera)on: Q x4 MU- MIMO 160MHz likely Up to 3.47Gbit/s 8

9 Wireless Mee)ng 2013 Aveiro, 21 March 2013 Downlink Mul)- user MIMO and Beamforming Stream 1 Stream 2 Stream 3 Stream 4 Allows 1 AP to transmit different data to mul)ple sta)ons simultaneously Up to 8 spa)al streams in both single- user and mul)- user modes 11n: Single user MIMO Stream 1 Stream 2 11ac: Mul)- user MIMO 9

transmit different data to mul)ple sta)ons simultaneously Up to 8

Single user MIMO 11ac: Mul)- user MIMO Single sounding & feedback

10 Wireless Mee)ng 2013 Aveiro, 21 March 2013 Downlink Mul)- user MIMO and Beamforming Stream 1 Stream 2 Stream 3 Stream 4 Allows 1 AP to transmit different data to mul)ple sta)ons simultaneously Up to 8 spa)al streams in both single- user and mul)- user modes 11n: Single user MIMO 11ac: Mul)- user MIMO Single sounding & feedback format for beam forming (as opposed to mul)ple, incompa)ble formats in 11n) 10

11 Wireless Mee)ng 2013 Aveiro, 21 March 2013 Opportuni)es and Threats Background noise: 5 GHz spectrum will become polluted due to cheap ac hardware occupying 80MHz channels Channel bandwidths of 160 MHz will present some RF challenges to enterprise environments and may not be used Tx Beam- forming is likely to get wide industry adop)on and agenuate the problem Nothing is for free: Increased power draws due to faster CPUs and radios Consuming more spectrum using the same RF power Signal to Noise RaGo Going from 64QAM to 256QAM requirements are increased More spa)al streams require more [power, cost]: antennas, RF connectors, and RF chains at transmi]er and receiver 11

12 802.11ad/WiGig Wireless Mee)ng 2013 Aveiro, 21 March GHz based Up to 7Gbit/s over 2.16GHz bandwidth Unified beamforming scheme New MAC: Channel access suppor)ng direc)onality (random and scheduled access) Seamless integra)on with a/b/g/n/ac Fast session transfer for mul)band opera)on across 2.4/5/60 GHz 60 GHz incurs large free- space path loss (22dB higher than 5 GHz), and penetra)on loss Replacement for shorter cables like HDMI, USB Wireless laptop docks, wirelessly pushing video to HDTVs 12

13 Conclusion Wireless Mee)ng 2013 Aveiro, 21 March ac is a faster and more scalable version of n More bandwidth, denser modula)on and more MIMO Provides a beger experience for each client: More available bandwidth (parallel video streams) Bagery life is extended (due to faster data exchanges) Low- lag Gigabit speeds MU- MIMO and beamforming Par)cularly well suited to bring- your- own- device (BYOD) situa)ons 13

14 Wireless Mee)ng 2013 Aveiro, 21 March 2013 Thank you! References: [1] Aruba Networks, ac, Frequently asked ques)ons, December 2011 [2] Cisco, ac: The finh genera)on of Wi- Fi, Technical White Paper, August 2012 [3] Qualcomm, IEEE802.11ac: The next evolu)on of Wi- Fi standards, May 2012 [4] Ruckus Wireless, ac: Very High Throughput, White Paper, February

802.11ac FREQUENTLY ASKED QUESTIONS. May 2012

802.11ac FREQUENTLY ASKED QUESTIONS May 2012 Table of Contents General Questions:... 3 1. What is 802.11ac?... 3 2. When will 802.11ac be ratified into a standard?... 3 5. Will 802.11ac come out before