IEEE 802.11 Standards: Wi-Fi 6 and beyond
IEEE 802.11 Standards: Wi-Fi 6 and beyond
Wi-Fi? networks: in use today for Emergency Services
New Amendments: Markets, use cases and key technologies
2019 October ? JPL Workshop Presenter: Dorothy Stanley, IEEE 802.11 Working Group Chair, dorothy.stanley@
"At lectures, symposia, seminars, or educational courses, an individual presenting information on IEEE standards shall make it clear that his or her views should be considered the personal views of that individual rather than the formal position, explanation, or interpretation of the IEEE." IEEE-SA Standards Board Operation Manual (subclause 5.9.3)
October 2019
Slide 1
IEEE 802.11 systems are commonly used for emergency and disaster recovery communications
Liberty Global Teams to Provide Free WiFi in Puerto Rico
Wireless Network Recovery Following Natural Disaster: Puerto Rico after Hurricane Maria including "cellular backhaul being provided via WiFi"
ct_id=3142393
October 2019
2
Customized products are developed using IEEE 802.11 systems for remote connectivity, disaster management, targeting developing countries. Example: India Centre for development of Telematics
October 2019
3
Market demands and new technology drive IEEE 802.11 innovation
Demand for throughput
Continuing exponential demand for throughput Most (50-80%, depending on the country) of the world's mobile data is carried on 802.11 (WiFi) devices
802.11ax/Wi-Fi 6 ? Increased throughput in 2.4, 5 (and 6) GHz bands. Increased efficiency. 802.11ay ? Support for 20 Gb/s rates in 60 GHz band New: 802.11be ? Extremely High Throughput
October 2019
Slide 4
Categories of Enhancements in 802.11ax (Wi-Fi 6)
Spectral Efficiency & Area Throughput
1024 QAM
25% increase in data rate
DL/UL MU-MIMO w/ 8 clients
Long OFDM Symbol
ac
High Density OFDMA
Spatial Reuse
8x8 AP
2x increase in throughput
ax
Up to 20% increase in data rate
Power Saving
Scheduled sleep and wake times
B
Next TWT TWT Wake Interval
e
a
c
o
T DL/UL
T DL/UL
n
F MU
F MU
T DL/UL F MU
B
e
a
c
T DL/UL
o
F MU
n
TWT element: Implicit TWT, Next TWT, TWT Wake Interval
20 MHz-only clients 80MHzCapable 20 MHz-only
Outdoor / Longer range
Extended range packet strVuariacbletduuratiornseper HE-LTF symbol
8?s
8?s 4?s 4?s
16?s 4?s
... L-STF L-LTF L-SIG RL-SIG HE-SIG-A HE-STF HE-LTF HE-LTF
Data
PE
Enhanced delay spread protectionlong guard interval
0.8us 11ac
1.6us 11ax
3.2us 11ax
October 2019
5
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