doc.: ieee 802.11-12/108r0 submissionitronslide 1 channelization considerations for smart grid date:...
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doc.: IEEE 802.11-12/108r0
Submission ItronSlide 1
Channelization Considerations for Smart Grid
Date: 2012-1-16Authors:
Jan 2012
doc.: IEEE 802.11-12/108r0
Submission ItronSlide 2
Abstract
• This presentation discusses parameters characteristics for Smart Grid applications for 802.11ah.
Jan 2012
doc.: IEEE 802.11-12/108r0
Submission Slide 3
Use Case 1a: Smart Grid – Meter to Pole : Requirements
# Category Comment
1 Location Outdoor, indoor
2 Environment type Urban, sub-urban, rural
3 STA/AP communication 2-way (meter data & control)
4 Data rate 100 kbps
5 BER/PER requirement PER<10%
6 Mobility Stationary
7 Traffic type Continuous/periodic/burst
8 Security requirement High
9 Reliability High
10 STA/AP capacity STA (outdoor): 6000 [4], :AP: 1
11 STA/AP category STA: fixed (outdoor/indoor), AP: fixed (outdoor)
12 STA/AP elevation STA: 1m,..,10m [8], AP: 2m,..,30m [8]
13 Actors Meter device (power, gas, water), Distributed Automation Device, IEEE 802.11ah AP
From 802.11-11/0457-r0
doc.: IEEE 802.11-12/108r0
Submission
Smart Grid Characteristics
• Controlled deployment• Large number of nodes• High aggregate throughput requirement• Relatively low data rate requirements• Example
• 25’ utility pole mounted AP• 5’ high electric meter• Hata suburban model• Maximum allowed radiated power under FCC 15.247 rules
Jan 2012
ItronSlide 4
This refers to 1MH vs 2MHz waveforms
doc.: IEEE 802.11-12/108r0
Submission Itron
Applicability to Smart Grid
• Coverage cost – longer range• Aggregate throughput – more channels• Overlapping networks – more channels
Jan, 2012
Slide 5
doc.: IEEE 802.11-12/108r0
Submission
Coverage cost example
Jan 2012
ItronSlide 6
2MHz waveform bandwidth require 100% higher equipment cost
doc.: IEEE 802.11-12/108r0
Submission
Aggregate vs single link throughput
Jan 2012
ItronSlide 7
1MHz waveform bandwidth enables higher aggregate throughput
doc.: IEEE 802.11-12/108r0
Submission Itron
Overlapping networks example
Jan, 2012
Slide 8
1MHz waveform allows three overlapping networks
doc.: IEEE 802.11-12/108r0
Submission Itron
Conclusion
• 1MHz channels better fit for use case 1a, Smart Grid application– Low coverage cost– Higher aggregate throughput– Overlapping networks
Jan, 2012
Slide 9
doc.: IEEE 802.11-12/108r0
Submission
Straw Poll: US Channelization (902 – 928MHz)
Slide 10
Yes:No:Abstain:
Jan 2012
902MHz
928MHz
2 MHz
4 MHz
8 MHz
16 MHz
1 MHz