IEEE P802.11 Wireless LANs Comment Resolutions for Clause 8.2.4 Date: 2014-09-02 Author(s): Name Affiliation Address Phone Liwen Chu Marvell Abstract This submission proposes comment resolutions for subclauses under 8.2.4: 3086, 3977, 3978, 3692, 3980, 3981, 3632, 3000, 3001, 3236, 3984, 3985, 4130, 3928. Interpretation of a Motion to A motion to approve this submission means that the editing instructions and any changed or added material are actioned in the TGah Draft. This introduction is not part of the adopted material. Editing instructions formatted like this are intended to be copied into the TGah Draft (i.e. they are instructions to the 802.11 editor on how to merge the text with the baseline documents). TGah Editor: Editing instructions preceded by “TGah Editor” are instructions to the TGah editor to modify existing material in the TGah draft. As a result of adopting the changes, the TGah editor will execute the instructions rather than copy them to the TGah Draft. CID Clause Num P L Comment Propose Change Resolution 69 43 " An S1G STA never transmits a Control frame with Subtype being equal to 6. " This is a very obscure way of saying S1G STAs don't transmit PS-Poll frames. Express it as I indicate in the comment, and move this somewhere more appropriate to what S1G STAs do and do not do. Reject Discussion: The Control frame with Subtype being equal to 6 is not PS-Poll. It is Control Frame Extension which is specially used in DMG devices. 69 45 what is meant by "other control frames"? clarify Revise. 1 1
captions. 71 25 Both "Short MAC frame" and "PV1 frame" is used to specify the same thing. Only one name shall be used. Replace all "Short xxx" by "PV1 xxx" except "Short Probe Response"; e.g. - Short frame => PV1 frame - Short MAC frame => PV1 MAC frame - Short MAC header => PV1 MAC header - Short Data => PV1 Data - Short Management => PV1 Management - Short Control => PV1 Control Revise Discussion: Generally agree with the comment. TGah editor makes changes in 11-14/1251r2 under CID 3928. CID Clause Num P L Comment Propose Change Resolution 72 4 Power Management field in any frame is used to indicate that a STA wants to be in power save mode in a frame exchange with the AP. Poll Type is used in frame Change "The following indication is only valid when Power Management field is 1" to The following indication is only valid in Ps-Poll frame." Revise Discussion: Power Management field being is required by Poll Type. However since Power Management is not just in PS-Poll, in PS-Poll frame is also added. TGah Editor: TGah editor to make changes shown in under CID 3692 72 17 what is a change sequence? introduce a definition in Clause 3 Reject. Discussion: Change Sequence is defined in Subclause 10.46. 72 3 Is is true that the "Poll Type" needs to be described in as part of Type/SubType description? It doesn't seem to fit in this clause. add a new clause number Revise. Discussion: generally agree with the comment. See CID 3234 and 3382 70 35 Regarding the of this Figure 8-3a, Change the title of Figure 8-3a from "Figure Reject 1 0
illustrated in Figure 8-3a (Frame Control field in S1G when Subtype is not equal to <ANA> and not equal to 10). B0 B1 B2 B3 B4 B7 B8 B10 B11 B12 B13 B14 B15 Protocol Version Type Subtype Bandwidth Indication Dynamic Indication Power Management More Data Protected Frame Order Bits: 2 2 4 3 1 1 1 1 1 Frame Control field in S1G when Subtype is not equal to <ANA> and not equal to 10 hen the value of the Type subfield is equal to 1 and the value of the Subtype subfield is equal to <ANA>, the remaining subfields within the Frame Control field are the following: Bandwidth Indication, Dynamic Indication, Next TWT Info Present, More Data, Flow Control, Reserved. In this case, the format of the Frame Control field is illustrated in Figure 8-3b (Frame Control field in S1G when Subtype is equal to <ANA>). B0 B1 B2 B3 B4 B7 B8 B10 B11 B12 B13 B14 B15 Protocol Version Type Subtype Bandwidth Indication Dynamic Indication Next TWT Info Present More Data Flow Control Reserved Bits: 2 2 4 3 1 1 1 1 1 Frame Control field in S1G when Subtype is equal to <ANA> (#3233) hen the value of the Type subfield is equal to 1 and the value of the Subtype subfield is equal to 10, the remaining subfields within the Frame Control field of S1G Control frames are the following: Bandwidth Indication, Dynamic Indication, Power Management, More Data, Poll Type. In this case, the format of the Frame Control field is illustrated in Figure 8-3c (Frame Control field in S1G when Subtype is equal to 10). B0 B1 B2 B3 B4 B7 B8 B11 B12 B13 B14 B15 Protocol Version Type Subtype Bandwidth Indication Dynamic Indication Management More Data Poll Type Bits: 2 2 4 3 1 1 1 2 Frame Control field in S1G when Subtype is equal to 10 0
according to the procedure defined in 9.3.2.10a (Fragment BA procedure)." Interpreting what a frame means according to the capbilities of both transmitter and receiver is generally a bad idea. It requires the a STA to determine its peer's capabilities before knowing how to respond or interpret a frame. And that might be in a SIFS period. It also makes it difficult for a 3rd party - e.g. a sniffer, to follow the exchange or report it meaningfully. SIFS, the AP will not announce fragment BA support. 76 11 I agree that "An S1G STA always set the S1G subfield to 1". But what about a non-S1G STA? Replace it with " The S1G subfield is set to 1 by an S1G STA and is set to 0 by a non-S1G STA". Accept 76 3 Table 8-9 seems to be out of place. It belongs to QoS Control field Move the table to its proper clause Revise Discussion: Table 8-9 is already moved to the place under subclause 8.2.4.5.4. 76 45 what is the purpose of setting the reserved bit always to 1? Why waste a bit for something that seems to serve no purpose. keep the reserved bit Revise Discussion: It is set to 1 only by S1G STA. A non S1G STA will set the subfield to 0. See comment resolution for comment 3236. 8.2.4.5.4 Ack Policy subfield TGah editor: Change Table 8-9 as follows(CID 3000): Ack Policy subfield in QoS Control field of QoS Data frames 5