IEEE 802.11-24/0479r6 Comments and Resolutions March 2024

March 2024 doc.: IEEE 802.11-24/0479r6 IEEE 802.11 AMP PAR/CSD Comments and Resolutions Date: 2024-03-13 Author: Name Bo Sun Affiliation Address Sanechips Phone Email Sun.bo1@sanechips.com.cn Report Slide 1 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 Abstract This document contains comments collected for AMP PAR/CSD documents and the resolution proposed by AMP SG 9 PAR comments and 10 CSD comments from 802.3 WG 4 PAR comments from NesCom 8 PAR comments and 4 CSD comments from 802.15 WG 1 PAR comment and 3 CSD comments from 802.1 WG 4 PAR comments and 2 CSD comments from James Gilb Resolutions marked in green has been reviewed in the group PAR and CSD documents under review: PAR: https://mentor.ieee.org/802.11/dcn/23/11-23-1006-05-0amp-ieee-802-11-amp-sg-proposed- par.docx CSD: https://mentor.ieee.org/802.11/dcn/23/11-23-1212-03-0amp-ieee-802-11-amp-sg-proposed- csd.docx See slides 20-22 for a summary of the applied resulting changes Report Slide 2 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.3 WG Comments PC1 Comments: 5.2.b Scope of the project: Readability suggestion: '... to enable operation of an Ambient Power ...' to '... to enable the operation of an Ambient Power ...' Resolution: Accepted and the AMP PAR document will be modified accordingly Comments PC2 Comments: 5.2.b Scope of the project: Readability suggestion: '... mechanisms for coexistence ...' to '... mechanisms for the coexistence ...' Resolution: Accepted and the AMP PAR document will be modified accordingly Report Slide 3 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.3 WG Comments PC3 Comments: 5.5 Need for the Project: Readability suggestion: '... due to requirements to maintenance-free ...' to '... due to requirements to be maintenance-free ...' Resolution: Accepted and the text will be modified to ... due to requirements for maintenance- free operation similar as resolution to NesCom comment PC13 Comments PC4 Comments: 5.5 Need for the Project: Readability suggestion: '... user experience in a negative way.' to '... user experience negatively.' Resolution: Accepted and the AMP PAR document will be modified accordingly Report Slide 4 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.3 WG Comments PC5 Comments: 5.5 Need for the Project: Readability suggestion: '... huge amount of IoT devices ...' to '... huge number of IoT devices ...' Resolution: Accepted and the AMP PAR document will be modified accordingly Comments PC6 Comments: 5.6 Stakeholders of the Standard: Readability suggestion: Stakeholders also include component providers; consumer electronic, mobile device and IoT device vendors; IoT network operators; and manufacturers and users of semiconductor devices. Resolution: Accepted and the sentence will be change to Stakeholders also include component providers, consumer electronic, mobile device and IoT device vendors, IoT network operators, and manufacturers and users of semiconductor devices. Report Slide 5 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.3 WG Comments PC7 Comments: 8.1 Additional Explanatory Notes: Readability suggestion: '... communication in sub-1 GHz band' to '... communication in the sub-1 GHz band'. Resolution: Accepted and the AMP PAR document will be modified accordingly. Comments PC8 Comments: 8.1 Additional Explanatory Notes: Readability suggestion: '... communication in 2.4 GHz band' to '... communication in the 2.4 GHz band' Resolution: Accepted and the AMP PAR document will be modified accordingly Report Slide 6 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.3 WG Comments PC9 Comments: 8.1 Additional Explanatory Notes: Readability suggestion: '... wireless power transfer in sub-1 GHz band' to '... wireless power transfer in the sub-1 GHz band' Resolution: Accepted and the AMP PAR document will be updated accordingly Report Slide 7 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE-SA NesCom Comments PC10 Comments: 5.2b and 8.1: " The first paragraph in 8.1 seems a part of the scope definition, i.e., belonging to 5.2.b. Suggest moving it to 5.2.b." Comments PC11 Comments: 5.2b: " May I suggest using "This amendment defines ...", instead of "... shall define ..."?" Comments PC12 Comments: 5.2b: You are kindly asked to consider rephrasing the last sentence of 5.2 as follows: This amendment defines mechanisms for coexistence of an AMP STA and deployed STAs compliant with IEEE Std 802.11 -2020 that operate in the same radio frequency band as the AMP STA. Reason: A "shall" statement provides an instruction. However, 12.2.3 of <https://mentor.ieee.org/myproject/Public/mytools/draft/styleman.pdf> states that "The scope of the standard shall explain in statements of fact what is covered in the standard and, if necessary, what is not covered in the standard [ ]." Hence, a standard's/amendment's scope describes what is and not what shall be." Report Slide 8 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE-SA NesCom Dorothy has suggested resolutions to PC10 - PC12: Modify the text in 5.2.b to be as follows, and remove the related text in 8.1. "This amendment defines modifications to both the IEEE 802.11 Medium Access Control layer (MAC) and Physical Layers (PHY) to enable operation of an Ambient Power communication (AMP) station (STA) that is powered using energy harvesting. Operation in sub-1 Gigahertz (GHz) and 2.4 GHz is defined. Specifically, at least one mode of data communication in sub-1 GHz band is defined and at least one mode of data communication in 2.4 GHz band with the AMP communication access category (AC) being set to AC_BK (background) is defined. This amendment defines mechanisms for coexistence of an AMP STA and deployed STAs compliant with IEEE Std 802.11 -2020 that operate in the same radio frequency band as the AMP STA. " Report Slide 9 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE-SA NesCom Proposed resolutions to PC10 - PC12: Modify the text in 5.2.b to be as follows, and remove the related text in 8.1. "This amendment defines modifications to both the IEEE 802.11 Medium Access Control layer (MAC) and Physical Layers (PHY) to enable operation of an Ambient Power communication (AMP) station (STA) that is powered using energy harvesting. Operation in the sub-1 Gigahertz (GHz) and the 2.4 GHz is defined. Specifically, at least one mode of data communication in the sub-1 GHz band is defined, at least one mode of data communication in the 2.4 GHz band with the AMP communication access category (AC) being set to AC_BK (background) is defined, and at least one mode of wireless power transfer in the sub-1 GHz band is defined to support RF energy harvesting. This amendment defines mechanisms for coexistence of an AMP STA and deployed STAs compliant with IEEE Std 802.11 -2020 that operate in the same radio frequency band as the AMP STA. " Report Slide 10 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE-SA NesCom Comments PC13 Comments: 5.4: " In Sec. 5.4, the second paragraph seems to apply to the Amendment for AMP, and seems to be missing a noun, such as "operations" after "requirements to maintenance- free, ....". Consider adding "operations" and changing "requirements to" to "requirements for", such as: "However, there are still many use cases and applications that cannot be addressed using existing IEEE 802.11 based WLAN IoT technologies due to requirements for maintenance-free operation, ultra-low complexity, very small size, very long lifecycle, and the limitations of conventional batteries."" Resolution (Dorothy suggested): Accepted and the AMP PAR document will be modified accordingly Report Slide 11 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.15 WG Comments PC14 Comments: 2.1 Title: There is not a definition of Ambient Power Communication it appears that this project might include power transfer, so the title is misleading. Resolution: Thanks for the comment. The title Ambient Power Communication is the shorter name for what has been described in the scope of project. It highlights that the fundamental character of the proposed amendment is to enable ambient power-enabled devices communication in the 802.11 scope. Comments PC15 Comments: 5.2.b Scope of Project: The scope talks about energy harvesting , then in 8.1 power transfer is mentioned. If power transfer is part of the project, then it should be included in the scope Resolution: Accepted and the AMP PAR document will be modified accordingly Report Slide 12 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.15 WG Comments PC16 Comments: 5.2.b Scope of Project : The scope mentions coexistence with 802.11-2020: will it be interoperable with 802.11-2020? Resolution: Thanks for the question. The answer is interoperability with 802.11-2020 is not the target of the proposed amendment therefore it is not specified in the PAR. Comments PC17 Comments: 5.2.b Scope of Project: How will the project ensure coexistence with other 802 standards operating in the bands, e.g. 802.15.4 and 802.15.6. This is particularly concerning as we understand that power transfer using a downlink is under consideration (doc 11-24-0163), despite not being included in the scope of the project. How will coexistence with the 100s of millions of 802.15.4 devices using sub 1GHz, as well as sub 1 GHz (802.11ah) be managed? Resolution: Thanks for the question. The power transfer is included in the updated AMP PAR document. The proposed amendment will respect and be compliant with current spectrum regulation by-default to provide coexistence with other wireless technologies working on the interested spectrum bands. And the group will continue to consider the improvement of coexistence during the amendment development, if approved. Report Slide 13 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.15 WG Comments PC18 Comments: 5.2.b Scope of Project : We suggest adding: This amendment shall defines mechanisms for coexistence for an AMP device and deployed devices compliant with IEEE Std 802.15.4TM that operate in the same radio frequency band as the AMP device Resolution: Thanks for the comments. The proposed amendment will respect and be compliant with current spectrum regulation by-default to provide coexistence with other wireless technologies working on the interested spectrum bands. And the group will continue to consider the improvement of coexistence during the amendment development, if approved. The group is willing to discuss with 802.15 experts on the coexisting issue in the future. Comments PC19 Comments: 5.2.b Scope of Project: Currently there is no indication of range / distance for power transfer please specify Resolution: Thanks for the comment. The range/distance for power transfer is analyzed in the tech report (https://mentor.ieee.org/802.11/dcn/23/11-23-2203-01-0amp-updated-technical-report-on- support-of-amp-iot-devices-in-wlan.docx) and is subject to various applications/use scenarios/implementations. Therefore it is not specified in the PAR. Report Slide 14 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.15 WG Comments PC20 Comments: 5.2.b Scope of Project : Also note regulatory constraints including safety (i.e. human body) Resolution: Thanks for the comments and reminding. The proposed amendment will be compliant with current applicable regulation policy/requirements by-default, including safety (i.e. human body) like other proposed amendments. Therefore it s not specifically listed in the PAR. Comments PC21 Comments: 8.1 : First mention of power transfer; should include this in the scope. Resolution: Accepted and the AMP PAR document will be modified accordingly. Report Slide 15 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From IEEE 802.1 WG Comments PC22 Comment: 5.2.b Scope of Project : Suggest rewording the last sentence from This amendment shall define to This amendment defines Resolution: Accepted and the addressed sentence will be modified to This proposed amendment defines . Report Slide 16 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From James Gilb Comments PC23 Comment: 5.2.b Scope of Project : Coexistence with other STAs for 802.11 is required, but not for IEEE 802.15.4 devices. I suggest adding to the end of the scope the following: "The amendment defines mechanisms for coexistence of an AMP STA with deployed STAs compliant with IEEE Std 802.11-2020 and devices compliant with IEEE Std 802.15.4-2020." and add 802.15.4's title in 8.1. (NesCom and others have already pointed out that the "shall" can't be in the scope). Resolution: Thanks for the comment. The proposed amendment will respect and be compliant with current spectrum regulation by-default to provide coexistence with other wireless technologies working on the interested spectrum bands. And the group will continue to consider the improvement of coexistence during the amendment development, if approved. The group is willing to discuss with 802.15 experts on the coexisting issue in the future. The shall will be removed from the scope of AMP PAR document. Report Slide 17 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From James Gilb Comments PC24 Comment: 8.1 : These aren't really explanatory notes, it seems like they are scope items that got removed for some reason. I would think that they should be deleted as they don't affect the project. Only the scope does. Resolution: Thanks for the comment. The addressed content will be moved to Scope section of the AMP PAR document. Comments PC25 Comment: 8.1 : Wireless power transfer is either ambient power nor RF energy harvesting. If the intent is to do something like an active RFID powered by a reader, then that should be in the scope and the name would need to change. I recommend deleting "at least one mode of wireless power ... RF energy harvesting." Resolution: Thanks for the comment. The addressed content will be moved to Scope section of the AMP PAR document. Report Slide 18 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 PAR Comments From James Gilb Comments PC26 Comment: "sub-1 Gigahertz (GHz)" should be "sub-1 GHz" You have a number, hence the abbreviation of the unit is used. If it was spelled out, it would be gigahertz and would not be followed with "(GHz)". Resolution: Thanks for the comment. The acronym abbreviation is expanded, as per the NesCom conventions, https://standards.ieee.org/about/sasb/nescom/conv/ Item 4, All acronyms shall be spelled out at first use. Report Slide 19 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 5.2.b Changes (indicated in bold) 5.2.b Scope of the project: This amendment defines modifications to both the IEEE 802.11 Medium Access Control layer (MAC) and Physical Layers (PHY) to enable the operation of an Ambient Power communication (AMP) station (STA) that is powered using energy harvesting. Operation in sub-1 Gigahertz (GHz) and 2.4 GHz is defined. Specifically, at least one mode of data communication in the sub-1 GHz band is defined and at least one mode of data communication in the 2.4 GHz band with the AMP communication access category (AC) being set to AC_BK (background) is defined. At least one mode of wireless power transfer in the sub-1 GHz band is defined to support RF energy harvesting. This amendment defines mechanisms for the coexistence of an AMP STA and deployed STAs compliant with IEEE Std 802.11 -2020 that operate in the same radio frequency band as the AMP STA. Report Slide 20 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 5.5 Changes (indicated in bold) 5.5 Need for the Project: Current Wireless Local Area Network (WLAN) applications based on IEEE 802.11 technology have been deployed in many market segments, including the traditional consumer electronic market and the ever-growing Internet of Things (IoT) market. Legacy IoT devices are usually powered using batteries with a limited lifespan, which can significantly affect user experience in a negative way negatively. The astronomical growth of IoT networks together with the advent of a huge amount number of IoT devices has pushed the limits of maintenance expenditures, including both labor and battery costs, to a whole new level. An IEEE 802.11 based WLAN IoT network is competitive from the perspective of deployment cost, due to an already widespread deployment and use of the unlicensed frequency band. <No change to remainder of 5.5 text> Report Slide 21 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 5.6 Changes (indicated in bold) 5.6 Stakeholders for the Standard: The stakeholders of this standard are the developers and users of the Wireless LAN devices, including wireless network access service providers, manufacturers, health care workers, retail service providers, and many others. Stakeholders also include semiconductor manufacturers and users of semiconductors, component providers, consumer electronic, and mobile devices vendors, and IoT devices vendors, and IoT network operators, andmanufacturers and users of semiconductor devices. For clarity, changes result in: Stakeholders also include component providers, consumer electronic, mobile device, and IoT device vendors, IoT network operators, and manufacturers and users of semiconductor devices. Report Slide 22 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC1 Comments: 1.2.1 Broad Market Potential: Item b multiple vendors and numerous users: There is no supporting information on the amount of interest from potential Task Force participants. For example, the number of people in the IEEE 802.11 Ambient Power (AMP) TIG/SG that would participate in the project, if approved. Resolution: Accepted. The AMP CSD document will be modified with supporting information on the amount of interest from potential participants. According to the participation history during AMP TIG/SG, it s expected there will be around 50 experts participating in the proposed project, if approved. Report Slide 23 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC2 Comments: 1.2.1 Broad Market Potential: Readability suggestion: 'AMP Communication tackles addresses ...' to 'AMP Communication addresses ...' or 'AMP Communication tackles...'. Resolution: Accepted and the text will be modified to AMP Communication tackles... . Comments CC3 Comments: 1.2.1 Broad Market Potential: Readability suggestion: '... to support creation of ...' to '... to support the creation of ...'. Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 24 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC4 Comments: 1.2.1 Broad Market Potential: Readability suggestion: '... and thus maintenance free ...' to '... and thus maintenance-free ...' Resolution: Accepted and the AMP CSD document will be modified accordingly. Comments CC5 Comments: 1.2.1 Broad Market Potential: Readability suggestion: '... a CAGR of 11.9% from 2022 to 2030 Error! Reference source not found.', need to add missing reference. Resolution: Accepted and the AMP CSD document will correct the missing/incorrect reference. Report Slide 25 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC6 Comments: 1.2.1 Broad Market Potential: Readability suggestion: '... invested more than 150-billion-yuan ....' to '... invested more than 150 billion yuan ...'. Resolution: Accepted and the AMP CSD document will be modified accordingly. Comments CC7 Comments: 1.2.1 Broad Market Potential: Readability suggestion: '... adding to the expected growth of number of devices ...' to '... adding to the expected growth of the number of devices ...'. Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 26 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC8 Comments: 1.2.3: Distinct Identity: Typo: or evern lower to or even lower . Resolution: Accepted and the AMP CSD document will be modified accordingly. Comments CC9 Comments: 1.2.5 Economic Feasibility: Item c: one location. Consistency issue this amendment. change to this proposed amendment Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 27 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.3 WG Comments CC10 Comments: 1.2.5 Economic Feasibility: Item d: three locations. Consistency issue this amendment. change to this proposed amendment Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 28 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.15 WG Comments CC11 Comments: General: CSD describes applications where there is adequate ambient power without wireless power transfer what are the applications that require this. Resolution: Thanks for the comment. The applications exploiting various energy sources other than wireless power transfer are analyzed in the AMP tech report as listed in the reference section of CSD (11-23-0436-00-0amp-technical-report-on-support-of-amp-iot- devices-in-wlan.docx). Comments CC12 Comments: 1.2.3 Distinct Identity : evern lower typo Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 29 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.15 WG Comments CC13 Comments: 1.2.4b Proven technology: This section comments that 802.11 is a proven radio technology, but it does not describe how the power transfer or energy harvesting is proven please include some examples. Resolution: Thanks for the comments. The mentioned examples are analyzed in the referred AMP technical report (11-23-0436-00-0amp-technical-report-on-support-of-amp-iot-devices-in-wlan.docx). They re not described in the CSD due to document length limitation. Comments CC14 Comments: 1.2.5 Economic Feasibility: Known cost factors: please provide evidence or a reference of how AMP devices are accepted by the market as having balanced costs Resolution: Thanks for the comments. The cost of AMP devices is analyzed in the AMP technical report (11-23-0436-00-0amp-technical-report-on-support-of-amp-iot-devices-in-wlan.docx) listed in the reference section, based on prototype implementations and comparison with RFID/WLAN IoT devices. It s not described in the CSD due to document length limitation. Report Slide 30 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.1 WG Comments CC15 Comments: 1.2.1 Broad Market Potential: Broad Sets of Applicability Change sentence 4 from : AMP Communication tackles addresses to AMP Communication addresses . Resolution: Accepted and the AMP CSD document will be modified accordingly. Comments CC16 Comments: 1.2.3 Distinct Identity: Change: ultra-low power device which is only powered with extremely low power density (e.g. radio waves with power density of several uW or evernlower, etc.). to: an ultra-low power device which is only powered with extremely low power density (e.g. radio waves with power density of several uW or even lower, etc.). Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 31 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From IEEE 802.1 WG Comments CC17 Comments: 1.2.5 Economic Feasibility: a) Known cost factors. Change entends to extends . Resolution: Accepted and the AMP CSD document will be modified accordingly. Report Slide 32 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From James Gilb Comments CC18 Comments: 1.2.3 Distinct Identity: Wireless power transfer is not ambient power or RF energy harvesting. I suggest deleting "This project will also provide mechanisms for wireless power transfer to support RF energy harvesting." If, for some reason, this is included, then the group needs to consider RF exposure limits and IEEE Std C95.1-2019 should be referenced here. Resolution: Accepted and the addressed sentence wil be modified to This project will also provide mechanisms for wireless power transfer to support RF energy harvesting in compliance with IEEE Std C95.1-2019. Report Slide 33 Bo Sun (Sanechips)

March 2024 doc.: IEEE 802.11-24/0479r6 CSD Comments From James Gilb Comments CC19 Comments: 1.2.3 Distinct Identity: Wireless power density is not measured in microwatts, but rather microwatts/meter^2. Also, if there isn't a number associated with the unit, the abbreviation isn't used (which uses the Greek letter mu and not u anyway) and the unit is spelled out instead. Resolution: Accepted and the addressed sentence will be modified to which operates with extremely low ambient power (e.g., radio waves with harvested power of 10 W or even lower, etc.) Report Slide 34 Bo Sun (Sanechips)