3.2 Definitions Specific to IEEE 802.11

July 2012doc.: IEEE 802.11-12/0744r0

IEEE P802.11
Wireless LANs

1.

The main part of the standard, which follows “List of figures”, starts with page number 1. However, in most of the drafts in IEEE802.11 page 1 is on the left side of the draft book, which is not normal in any other kinds of books. We would like to recommend the first page of the main part to start on the right side of the draft (or standard).

2.

3.2 Definitions specific to IEEE 802.11

Change the following definitions:

20 MHz mask physical layer convergence procedure (PLCP) protocol data unit (PPDU): A Clause 18

(Orthogonal frequency division multiplexing (OFDM) PHY specification) PPDU, a Clause 19 (Extended

Rate PHY (ERP) specification) orthogonal frequency division multiplexing (OFDM) PPDU, or a Clause 20

(High Throughput (HT) PHY specification) 20 MHz high-throughput (HT) PPDU with the TXVECTOR

parameter CH_BANDWIDTH equal to HT_CBW20 and the CH_OFFSET parameter equal to CH_OFF_20.

The PPDU is transmitted using a 20 MHz transmit spectral mask defined in Clause 18 (Orthogonal frequency

division multiplexing (OFDM) PHY specification), Clause 19 (Extended Rate PHY (ERP) specification),

or Clause 20 (High Throughput (HT) PHY specification). One of the following PPDUs:

1) a Clause 18 PPDU transmitted using the transmit spectral mask defined in Clause 18;

2) a Clause 19 orthogonal frequency division multiplexing (OFDM) PPDU transmitted using the

transmit spectral mask defined in Clause 19;

3) a Clause 20 20 MHz high-throughput (HT) PPDU with the TXVECTOR parameter

CH_BANDWIDTH equal to HT_CBW20 and the CH_OFFSET parameter equal to

CH_OFF_20 transmitted using the 20 MHz transmit spectral mask defined in Clause 20; or

4) a Clause 22 20 MHz very high throughput (VHT) PPDU with TXVECTOR parameter

CH_BANDWIDTH equal to CBW20 transmitted using the 20 MHz transmit spectral mask

defined in Clause 22.

20 MHz physical layer convergence procedure (PLCP) protocol data unit (PPDU): A Clause 16 PPDU,

Clause 18 17 PPDU, Clause 17 18 PPDU, Clause 19 orthogonal frequency division multiplexing (OFDM) PPDU,

or Clause 20 20 MHz high-throughput (HT) PPDU with the TXVECTOR parameter CH_BANDWIDTH

equal to HT_CBW20 or Clause 22 20 MHz very high throughput (VHT) PPDU (TXVECTOR parameter

CH_BANDWIDTH equal to CBW20).

3.

8.2.4.3.8 TA field

Change the paragraph in this section as follows:

The TA field contains an IEEE MAC individual address that identifies the STA that has transmitted, onto the

Table 8-1—Valid type and subtype combinations

Type value

b3 b2

Type

description

Subtype value

b7 b6 b5 b4 Subtype description

01 Control 0000-0101 0011 Reserved

01 Control 0100 Beamforming Report Poll

01 Control 0101 VHT NDP Announcement

WM, the MPDU contained in the frame body field. If the Individual/Group bit is 0, then the TA field is the

individual address of the STA; otherwise the TA field is a bandwidth signaling TA, indicating that the frame

carries additional information in the scrambling sequence (see 8.3.1.2 (RTS frame format)). The Individual/

Group bit is always transmitted as a zero in the transmitter address.

4.

In the context, some of the beamforming feedback matrix “V” and the steering matrices “Q” are italicized and some are non-italicized. We’d would better stick with one type of form.

References:

Submissionpage 1Minseok Oh, Kyonggi Univ.