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Re: [STDS-802-11-TGBD] [EXT] [STDS-802-11-TGBD] Coexistence Assurance Document (CSD) requested for D1.0 WG LB

Hi Rui, Bo and All,

 

Thank you Rui for taking this on.

 

Just to make sure the scope/requirements of the CA document is met, below please find the Procedure for coexistence assessment from the “IEEE 802 LAN/MAN STANDARDS COMMITTEE (LMSC) OPERATIONS MANUAL":

 

“13. Procedure for coexistence assessment

If indicated in the five criteria, the wireless Working Group shall produce a coexistence assessment (CA) document in the process of preparing for Working Group letter ballot. The CA document shall accompany the draft on all wireless Working Group letter ballots.  The CA document shall address coexistence with all relevant active IEEE 802 LMSC wireless standards specifying devices for unlicensed operation. The Working Group should consider other specifications in their identified target band(s) in the CA document.  The IEEE 802.19 Working Group shall have one vote in Working Group letter ballots that include CA documents. The IEEE 802.19 Working Group evaluates the CA document, and submits comments on the CA document to the WG letter ballot."

 

Note the CA document is only required to address coexistence with “… active IEEE 802 LMSC wireless standards …” for “… unlicensed operation.”

Though the CA document “… should consider other specifications ...”, it is not required.

 

 

I observe that:

  1. 802.11bd is intended for use in the ITS band or bands.
  2. The 5.9 GHz ITS band is not an unlicensed band and hence, is defined and regulated by government regulators.
  3. Only these regulators will specify what technologies and transmission types are allowed in the band. 
  4. Regarding the proposed 60 GHz band operation I have a question: Is the plan to operate as an ITS device under ITS regulatory rules or as an unlicensed device?

 

 

Therefore my views are:

  1. For the 5.9 GHz ITS band: The CA document need only state that 802.11bd is intended for operation in the licensed/regulated  ITS band and coexistence is ensured by regulation.
  2. For the 60 GHz band:
    1. If operation will be under ITS regulations, then the same statement should be made as will be made for the 5.9 GHz band. 
    2. If operation will be under unlicensed regulations, then the CA document should be based on the CA documents of 802.11ad (IEEE 802.11-10/1025r5), 802.11af (IEEE 802.11-11/177r0), and 802.11ay (IEEE 802.11-17/1288r3).

 

Hope this is helpful, if you would like me to review the draft please let me know.  Hopefully, this will not be too much work.

 

Regards,

Joseph Levy

 

From: ** STDS-802-11-TGbd -- Enhancements for Next Generation V2X.Task Group ** <STDS-802-11-TGBD@xxxxxxxxxxxxxxxxx> On Behalf Of Bo Sun
Sent: Friday, October 2, 2020 4:08 AM
To: STDS-802-11-TGBD@xxxxxxxxxxxxxxxxx
Subject: Re: [STDS-802-11-TGBD] [EXT] [STDS-802-11-TGBD] Coexistence Assurance Document (CSD) requested for D1.0 WG LB

 

Hello, Rui,

 

Thanks for your volunteering!

 

Best Regards

Bo

 

Original Mail

Sender: RuiCao

Date: 2020/10/02 13:15

Subject: Re:[STDS-802-11-TGBD] [EXT] [STDS-802-11-TGBD] Coexistence Assurance Document (CSD) requested for D1.0 WG LB

Hi Bo,

 

I can help to draft the CAD document for group to review.

 

Thanks,

Rui

 

From: ** STDS-802-11-TGbd -- Enhancements for Next Generation V2X.Task Group ** <STDS-802-11-TGBD@xxxxxxxxxxxxxxxxx>On Behalf Of Bo Sun
Sent: Thursday, October 1, 2020 9:17 PM
To: STDS-802-11-TGBD@xxxxxxxxxxxxxxxxx
Subject: [EXT] [STDS-802-11-TGBD] Coexistence Assurance Document (CSD) requested for D1.0 WG LB

 

Caution: EXT Email

Hello, all, 

 

Our CSD document (11-18/0862r3) indicates that a Coexistence Assurance document will be produced. And as requested by the 802 LMSC operations rules, we need to provide a Coexistence Assurance Document accompanying D1.0 for WG LB. The WG Chair indicated that the LB will be triggered once we have an approved CSD. 

 

I added two TGbd TCs on Oct 13 and 16 (following 10-day announcement rule) for the CAD development and approval. If we can have consensus on a CAD by email discussion, then we can run a motion to approve the CAD in TC on Oct 16th. We still have chance to go through the CAD in TC on Oct 13th for editorial modification.

 

I'd like to call for volunteer to develop the CAD and send to reflector for discussion asap.

 

Best Regards

Bo

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