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The Role of Wi-Fi In 5G networks. Stephen G. Rayment Head, Technology, Wi-Fi and Mobile Enterprise May PDF

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The Role of Wi-Fi In 5G networks Stephen G. Rayment Head, Technology, Wi-Fi and Mobile Enterprise May 2014 Outline Wi-Fi background and status IEEE HEW Wi-Fi and cellular integration Other
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The Role of Wi-Fi In 5G networks Stephen G. Rayment Head, Technology, Wi-Fi and Mobile Enterprise May 2014 Outline Wi-Fi background and status IEEE HEW Wi-Fi and cellular integration Other technologies Conclusions The Role of Wi-Fi in 5G Networks Ericsson AB Page 2 Wi-Fi technology Evolution 10,000 Mb/s b g n ac Relentless increases in throughput at roughly constant low(!) price 5x throughput every ~3 years Focus has been on data rates for a single link The Role of Wi-Fi in 5G Networks Ericsson AB Page 3 Graph shows initial commercial availability and maximum PHY data rates Wi-Fi Market 7 billion chipsets shipped cumulative total YE 2013 Forecasts call for another 7 billion in 3 years 4 3 Annual Wi-Fi and WiGig Chipset Shipments (billion) Tri-band 11ad (60 GHz) 11ac (5 GHz) 11n (2.4 GHz) Enterprise Wi-Fi US$3B in 2013 Carrier Wi-Fi US$1.1B in M hotspots by Dual-band 11ac (5 GHz) 11n (2.4 GHz) Dual-band 11n (2.4 and 5 GHz) Recent push into Internet of Things Single-band 11n (2.4 GHz) The Role of Wi-Fi in 5G Networks Ericsson AB Page 4 Source: ABI Research Unlicensed SpectruM Currently 555 at 5GHz IEEE channel # U NII-1 U NII-2A U NII-2B U NII-2C U NII U NII DFS Weather Radar Currently available channels FCC proposed new channels The Role of Wi-Fi in 5G Networks Ericsson AB Page 5 Courtesy IEEE IEEE ac 1 Gb/s Wi-Fi at 5GHz Wide channel bandwidth 80 or 160 High-order modulation 256 QAM Non-contiguous channelization Additional MIMO Streams Multi User MIMO Increased data rate 1.3 ~ 3.6 Gb/s PHY rate Increased data rate at short distance Effective use of spectrum 802 standard supports up to 8 streams, 3 and 4 being certified Network capacity and spectral efficiency with single radio devices Certification of IEEE ac happens in two releases The Role of Wi-Fi in 5G Networks Ericsson AB Page 6 IEEE HEW History High Efficiency WLAN HEW Study Group created in March 2013 to enhance PHY and MAC in 2.4 and 5 GHz: Improve spectrum efficiency and area throughput Improve real world performance in indoor and outdoor deployments ax Task Group approved in March 2014 with scope: At least 4X improvement in average throughput per device over current systems in dense deployment scenario Maintain or improve power efficiency Operate in frequency bands between 1 and 6 GHz Maintain backward compatibility and coexistence Outdoor operation limited to stationary and pedestrian speeds The Role of Wi-Fi in 5G Networks Ericsson AB Page 7 IEEE ax Current status Many technologies being discussed Dynamic sensitivity control OFDMA UL-MIMO Scheduling In band duplex Hybrid ARQ Current work Channel models Simulation scenarios Evaluation methodology Estimate standard complete July 2018 Participation from operators, chip vendors, OEMs and universities The Role of Wi-Fi in 5G Networks Ericsson AB Page 8 The Wi-Fi Efficiency Challenge Simulation comparison Downlink LTE, 2GHz Wi-Fi, 2.4GHz reuse 3, no interf Wi-Fi, 2.4GHz reuse 3, 50% interf Wi-Fi, 5GHz reuse 12, no interf Wi-Fi, 5GHz reuse 12, 50% interf Served Traffic per Small Cell (95% 5Mbps) [Mbps] LTE 20+20, 2x2 DL and 1x2 UL MIMO Wi-Fi n, multiples of 20, 2x2 MIMO CS threshold -85dBm Typical enterprise setting 80x50m, four floors, walls every 10m 250 users per floor, eight APs per floor The Role of Wi-Fi in 5G Networks Ericsson AB Page 9 See... IEEE document 11-13/1123r1 Wi-Fi Cellular Integration Wi-Fi becomes just another RAT 3GPP RAN AAA HLR PCRF RAN Integration PDN GW picorbs Wi-Fi RAN Wi-Fi AC Core Integration Wi-Fi GW 3GPP Core RAN Integration for: Steering of users between RANs depending on e.g. signal quality and load Improve end user experience and network performance Ericsson products, 3GPP RAN2, Wi-Fi Alliance The Role of Wi-Fi in 5G Networks Ericsson AB Page 10 Core Integration for: Authenticating and charging subscriber Policy decision and enforcement Deep packet inspection, lawful intercept, etc. End to end QoS Session mobility between RANs Ericsson products, 3GPP ANDSF, SaMOG Unlicensed Band Aggregation LTE Release 13 LTE + + S1 S2 Wi-Fi LA-LTE LTE Wi-Fi Aggregation - RAN aggregation - IP aggregation - MPTCP LA-LTE - Spectrum supplement for licensed bands - Common MAC/PHY + RRM The Role of Wi-Fi in 5G Networks Ericsson AB Page 11 IEEE ad WiGIG is now Wi-Fi at 60GHz China Japan Korea Australia Europe Canada /USA GHz 2.16 channel bandwidth Typically 4 channels 385 Mb/s ~ 6756 Mb/s BPSK ~ 64-QAM Line of sight, in room, very high throughput applications e.g. wireless USB, SD card and HD display extension With high gain antennas can be used for P2P wireless backhaul IEEE standard ratified in 2013 Wi-Fi Alliance has several certification programs near launch The Role of Wi-Fi in 5G Networks Ericsson AB Page 12 IEEE AH Wi-Fi for M2M and IoT Bandwidth PHY Rate 150Kbps 4Mbps 650Kbps 7.8Mbps 1.35Mbps 18Mbps 2.9Mbps 39Mbps 5.8Mbps 78Mbps For license exempt bands below 1 GHz Enhancements for short packets, reduced power, huge # of devices e.g. machine type communications, home automation, wearable devices Extended range connectivity up to 1 km? IEEE Draft 2.0 expected to go for letter ballot in May 2014 target completion March 2016 WFA recently started to define certification program The Role of Wi-Fi in 5G Networks Ericsson AB Page 13 Conclusions Wi-Fi is a major consumer and enterprise technology to be reckoned with Access to a large and growing amount of unlicensed spectrum Performance and efficiency will continue to improve, e.g. with HEW Ericsson a leader in integrating Wi-Fi and cellular technologies at many levels Wi-Fi will be an element of the evolution of mobile broadband for 5G Other technologies may play a role in the MTC elements of 5G Wi-Fi Will Continue to complement and be synergistically integrated with cellular technology as we Advance to 5G The Role of Wi-Fi in 5G Networks Ericsson AB Page 14 The Role of Wi-Fi in 5G Networks Ericsson AB Page 15
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