IEEE P802.11 Wireless LANs Clause 27.1 Comment Resolution Date: 2017-08-15 Author(s): Name Affiliation Address Phone Osama Aboul-Magd Huawei Technologies 303 Terry Fox Drive Ottawa, ONT, CANADA K2K-3J1 613-287-1405 CID Page Clause Comment Proposed Change Resolution Owning Ad-hoc 3141 149.11 27.1 The HE MAC introduction would benefit from an explanation of the relationship of this clause to Clauses 10-11. Add a more general description. For example you might state that an HE STA that supports a feature described in 27, supports that form of the feature if the feature is also described in Clause 10 or 11. Revised Resolution of this CID is similar to resolution to CID 9722 in doc MAC 5166 149.10 27.1 is "are banned" normative? change sentence to a "shall not" Revised The sentence is deleted. TGax Editor to make changes in 11-17/1248r2 MAC 7070 149.08 27.1 In "Introduction", general explanations for HE MAC should be added first as written in as in comment Revised Resolution of this CID is similar to resolution to CID 9722 in doc MAC
28.1 (Introduction for HE PHY) 7792 149.10 27.1 What does "are banned" mean? Replace with "An HE STA shall not support HCCA or TSPECs." Revised The sentence is deleted. TGax Editor to make changes in 11-17/1248r2 MAC 7793 149.10 27.1 Backward compatibility problems around Since an HE STA is also a VHT STA (per 4.3.14a), to disallow any use of TSPEC by an HE STA means that any peer (VHT or older STA) that sends a TSPEC in to the HE STA will get indeterminate and incompatible results. Clarify the expected behavior for an HE STA when in peer communication with a pre-HE STA, when TSPEC use is attempted. Revised The sentence is deleted. TSPEC is allowed for HE STA. See changes in MAC 8317 149.10 27.1 It is useful for the reader to in 27.1 which clause 27 procedures are mandatory and optional like 28.1.1 Introduction to the HE PHY. 300+ 'SHALL's (out of 430) can be removed within clause 27. Write MAC introduction with Shalls in 27.1 and remove > 300 'SHALL's from remaining Clause 27 text. Rejected It is not clear how adding few SHALLs in the 27.1 would save on the 300+ SHALLs counted by the commenter in Clause 27. Additionally a list of MAC features and mandatory/option designation is given in clause MAC
4.3.14a and there is no reason to repeat this list in more than one place in the draft. 8333 149.10 27.1 The MAC clause should have a regulatory requirements paragraph just after the introduction, as channel access might have regulatory constraints, e.g., EN 301 893 in Europe. Insert "Regulatory requirements that do not affect interoperability are not addressed in this standard. Implementers are referred to the regulatory sources in D for further information. Operation in countries within defined regulatory domains may be subject to additional or alternative national regulations." Rejected. 802.11-2016 includes the statement “Compliance with the provisions of any IEEE Standards document does not imply compliance to any applicable regulatory requirements. Implementers of the standard are responsible for observing or referring to the applicable regulatory requirements” under Laws and regulations. This statement seems to achieve the same understanding as proposed by the commenter. Additionally other MAC clauses (Clause 10 in particular) doesn’t include a specific regulatory statement in the form proposed by the commenter. MAC
The proposed changes to be generic and the commenter may try to add it to the baseline as part of the REVmd process. 8692 149.08 27.1 Shouldn't section called "Introduction" briefly summarize the purpose of the Clause? Now all it says is that "The use of HCCA and TSPEC are banned at HE STAs." Provide brief summary of Clause 27 as part of 27.1. Revised Resolution of this CID is similar to resolution to CID 9722 in doc MAC 9436 149.10 27.1 the language of "banned" seems not appropriate for specification language and should be revised. change the sentence into "HE STAs shall not use HCCA and the TSPEC mechanism.". Revised TGax Editor to make changes in <this document> MAC 9437 149.10 27.1 The introduction section should contain descriptions and summaries for HE MAC instead of banning of certain behavior. Such descriptions and summaries Provide descriptions and summaries for HE MAC in this section. Revised Resolution of this CID is similar to resolution to CID 9722 in doc MAC
should be added. 9517 149.10 27.1 "The use of HCCA and TSPEC are banned at HE STAs." Two thoughts: (1) This sentence is ambiguous. If we ban HCCA, it will be reasonable to disallow TSPEC negotiation for HCCA. However the TSPEC negotiation can be used for admission control for the EDCA which will be beneficial for the schduling purpose at the AP. Therefore, I do not think it will be good to disallow all of the TSPEC negotiation. (2) This sentence is not the introduction of HE MAC. It should be stated somewhere in 27.2. (1) The sentence should be modified to: "The use of HCCA is banned at HE STAs." (2) Move this sentence somewhere in 27.2. Revised TGax Editor to make changes in 11-17/1248r2 The use of TSPEC by HE STAs is allowed. MAC