IEEE WPANs Meeting Slides July 2024
Project: IEEE P802.15 Working Group for Wireless Personal Area
Project: IEEE P802.15 Working Group for Wireless Personal Area
Networks (WPANs)
Networks (WPANs)
Submission Title: IG Access July Meeting Slides
Date Submitted:
17 January 2024
Source:
Benjamin A. Rolfe (Blind Creek Associates)
Contact:
Voice:
+1 408 395 7207,
: ben.rolfe @ ieee.org
Re:
Wireless Next Generation
Abstract:
Agenda and Meeting Slides for the
July 2024 Plenary Session
. Interest group
access
Purpose:
Support the illusion of organization.
Notice:
This document has been prepared to assist the IEEE P802.15. It is offered as a basis
for discussion and is not binding on the contributing individual(s) or organization(s).
The material in this document is subject to change in form and content after further
study. The contributor(s) reserve(s) the right to add, amend or withdraw material
contained herein.
Release:
The contributor acknowledges and accepts that this contribution becomes the
property of IEEE and may be made publicly available by P802.15.
Slide 2
July 2024 802 Plenary
Interest Group, Spectrum
Channel Access
Hybrid Meeting
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R
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Please remember to enter your attendance in IMAT
Reminder:
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This is a non-PAR activity
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All the rules of conduct apply
https://grouper.ieee.org/groups/802/sapolicies.shtml
Slide 3
A
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1.
Opening and Meeting Reminders
2.
Overview of Interest Group
3.
Technical Discussion
4.
Any other business
5.
Adjourn
Slide 4
Opportunity Statement
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Need to share spectrum
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Need to share with uncoordinated, random access
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Sharing through coexistence is essential
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Need to accommodate reality
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W
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c
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Greater than a single amendment to a single standard
Slide 5
Basis Realities for this IG
(ground rules)
•
There are many 802 wireless technologies
•
All are important
•
None are more important (in the system view)
than others
•
Diversity of uses is an important metric for
spectrum efficiency
•
Diversity of technologies is a strength of 802
•
There are other technologies we have to
expect
•
Won’t abide by our rules
•
Must abide by regulations
•
802 is not a regulatory body
Slide 6
Slide 7
Emitted Signal Power
+23 dBm/MHz
Mt Everest
8,849 meters
-41 dBm/MHz
Power Represented as Height
UWB
Standard Power U-NII
A tale of two methods of unlicensed access
1.6 Rice Grains (2mm ea.)
Foundation: Sharing
Sharing means different things.
Slide 8
1.
If it’s mine, it’s mine!
2.
If it’s yours, it’s mine!
3.
If it’s broken, it’s yours!
Foundation: Sharing
Or to put that another way…
•
Traditional non-sharing: It’s mine and you
can’t play with it
•
Sharing by avoidance: in time, frequency,
geography: you get a turn
•
Sharing by coexistence: We can play
together
•
Traditional unlicensed (LBT): avoidance at a
finer time scale
•
Co-use: ability for two radios to transmit and
not annihilate each other
Slide 9
Foundation: Sharing
•
Sharing means different things
•
Avoidance is one tool (part) that is familiar
•
Separation in time, frequency or geography
•
Unsustainable
•
Avoidance isn’t enough nor sustainable
•
Sharing by enabling mutual successful operation is better
•
This is a working definition of sharing by coexistence
•
Coexistence is complicated – no one methods works
always, everywhere, for everyone
Slide 10
A Systems View
•
There’s a lot of different things using the spectrum
•
Not all are “family”
•
There are a lot of different use cases RF environments,
driving different (and often dynamic) requirements
•
There’s a lot of parts that are useful
•
Some commonality among our standards
•
Many, many choices (knobs to twiddle)
•
There are many trade-offs – what works best depends
upon what you need to accomplish
•
A systems view: do what works best for what you are
optimizing (optimal assembly of parts – this is dynamic)
Slide 11
Coexistence isn’t one thing
•
Channel sensing can be useful
•
Traditional LBT (listen, decide) can work sometimes
•
Traditional LBT doesn’t work sometimes
•
LBT is part of a solution, not a solution
•
Obvious examples of LBT:
•
802.11 CSMA-CA (multiple variations)
•
802.15.4 CSMA-CA (multiple variations)
•
Need to look at the whole problem
Slide 12
Discussion
Slide 13
IG Results (outputs)
•
[to be discussed]
Slide 14
Any Other Business
Slide 15
Adjourned
Slide 16
07/12/10
Page
Document pertaining to the July 2024 IEEE P802.15 Working Group meeting for Wireless Personal Area Networks (WPANs). It includes slides and agenda items related to spectrum channel access, technical discussions, opportunity statements, and ground rules for the interest group. The document emphasizes the importance of sharing spectrum, accommodating diverse technologies, and the need for a system-wide view of coexistence beyond mere avoidance strategies.
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Presentation Transcript
July 2024 doc.: IEEE 15-24-0412-01-0000 Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: IG Access July Meeting Slides Date Submitted: 17 January 2024 Source: Benjamin A. Rolfe (Blind Creek Associates) Contact: Voice: +1 408 395 7207, E-Mail: ben.rolfe @ ieee.org Re: Wireless Next Generation Abstract: Agenda and Meeting Slides for the July 2024 Plenary Session. Interest group access Purpose: Support the illusion of organization. Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. B. Rolfe (BCA)
July 2024 doc.: IEEE 15-24-0412-01-0000 July 2024 802 Plenary Interest Group, Spectrum Channel Access B. Rolfe (BCA) Slide 2
July 2024 doc.: IEEE 15-24-0412-01-0000 Hybrid Meeting Registration is required Please remember to enter your attendance in IMAT Reminder: This is a non-PAR activity All the rules of conduct apply https://grouper.ieee.org/groups/802/sapolicies.shtml B. Rolfe (BCA) Slide 3
July 2024 doc.: IEEE 15-24-0412-01-0000 Agenda 1. Opening and Meeting Reminders 2. Overview of Interest Group 3. Technical Discussion 4. Any other business 5. Adjourn B. Rolfe (BCA) Slide 4
July 2024 doc.: IEEE 15-24-0412-01-0000 Opportunity Statement Need to share spectrum Need to share with uncoordinated, random access Sharing through coexistence is essential Need to accommodate reality We need a systems view of coexistence to advance beyond avoidance Greater than a single amendment to a single standard B. Rolfe (BCA) Slide 5
July 2024 doc.: IEEE 15-24-0412-01-0000 Basis Realities for this IG (ground rules) There are many 802 wireless technologies All are important None are more important (in the system view) than others Diversity of uses is an important metric for spectrum efficiency Diversity of technologies is a strength of 802 There are other technologies we have to expect Won t abide by our rules Must abide by regulations 802 is not a regulatory body B. Rolfe (BCA) Slide 6
July 2024 doc.: IEEE 15-24-0412-01-0000 A tale of two methods of unlicensed access Mt Everest 8,849 meters +23 dBm/MHz Standard Power U-NII Power Represented as Height Emitted Signal Power 1.6 Rice Grains (2mm ea.) UWB -41 dBm/MHz B. Rolfe (BCA) Slide 7
July 2024 doc.: IEEE 15-24-0412-01-0000 Foundation: Sharing Sharing means different things. Toddler Rules of Sharing I told you that spectrum is mine! 1. 1. If it s mine, it s mine! If it s mine, it s mine! 2. 2. If it s yours, it s mine! If it s yours, it s mine! 3. 3. If it s broken, it s yours! If it s broken, it s yours! Incumbents New Entrants Use the bands we don t want B. Rolfe (BCA) Slide 8
July 2024 doc.: IEEE 15-24-0412-01-0000 Foundation: Sharing Or to put that another way Traditional non-sharing: It s mine and you can t play with it Sharing by avoidance: in time, frequency, geography: you get a turn Sharing by coexistence: We can play together Traditional unlicensed (LBT): avoidance at a finer time scale Co-use: ability for two radios to transmit and not annihilate each other B. Rolfe (BCA) Slide 9
July 2024 doc.: IEEE 15-24-0412-01-0000 Foundation: Sharing Sharing means different things Avoidance is one tool (part) that is familiar Separation in time, frequency or geography Unsustainable Avoidance isn t enough nor sustainable Sharing by enabling mutual successful operation is better This is a working definition of sharing by coexistence Coexistence is complicated no one methods works always, everywhere, for everyone B. Rolfe (BCA) Slide 10
July 2024 doc.: IEEE 15-24-0412-01-0000 A Systems View There s a lot of different things using the spectrum Not all are family There are a lot of different use cases RF environments, driving different (and often dynamic) requirements There s a lot of parts that are useful Some commonality among our standards Many, many choices (knobs to twiddle) There are many trade-offs what works best depends upon what you need to accomplish A systems view: do what works best for what you are optimizing (optimal assembly of parts this is dynamic) B. Rolfe (BCA) Slide 11
July 2024 doc.: IEEE 15-24-0412-01-0000 Coexistence isn t one thing Channel sensing can be useful Traditional LBT (listen, decide) can work sometimes Traditional LBT doesn t work sometimes LBT is part of a solution, not a solution Obvious examples of LBT: 802.11 CSMA-CA (multiple variations) 802.15.4 CSMA-CA (multiple variations) Need to look at the whole problem B. Rolfe (BCA) Slide 12
July 2024 doc.: IEEE 15-24-0412-01-0000 Discussion B. Rolfe (BCA) Slide 13
July 2024 doc.: IEEE 15-24-0412-01-0000 IG Results (outputs) [to be discussed] B. Rolfe (BCA) Slide 14
July 2024 doc.: IEEE 15-24-0412-01-0000 Any Other Business B. Rolfe (BCA) Slide 15
July 2024 doc.: IEEE 15-24-0412-01-0000 Adjourned B. Rolfe (BCA) Slide 16
