IEEE P802.11 Wireless LANs Comment Resolution on the SISO Phase of MU-MIMO BF Date: 2018-2-12 Author(s): Name Affiliation Address Phone Lei Huang Panasonic lei.huang@sg.panasonic.com CID Page Number Line Number Comment Proposed Change Resolution 1340 168 37 "The execution of the MU-MIMO beamforming protocol uses the EDMG Group ID Set element transmitted by the AP or PCP of the BSS." - poor wording replace perhaps with : "The MU-MIMO beamforming protocol uses the EDMG Group ID set element transmitted by the AP or PCP of the BSS." Accepted- TGay editor to make the changes shown in 11-18/0298r0 under all headings that include CID 1340. 2022 168 37 It would be useful to insert the reference to the Group Set ID Please add reference where Group ID set defined Accepted- Similar change should be made on the first occurrence of the other frames or elements. TGay editor to make the changes in 11-18/0298r0 under all headings that include CID 2022. 2023 169 26 "I-TXSS" is not defined in IEEE 802.11-2016 "I-TXSS" shall be replaced by "initiator TXSS" in whole draft standard. Accepted- TGay editor to make the changes in 11-18/0298r0 under all headings that include CID 2023. 2311 169 38 If I-TXSS is present then the feedback phase starts SIFS after this. However it is not clear when the SISO feedback procedure as described on pg 170 starts if this is not the case. Please complete the behaviour. Rejected- If I-TXSS is not present, there is no specific timing requirement for starting the SISO Feedback subphase,
no additional text is needed. 2312 169 47 If AP sends I-TXSS but responder does not hear it due to collision, it may send EDMG Channel Measurement Feedback element with either sector ID or awv ids based on a prior successful TXSS. In this case AP would parse the EDMG sector ID order wrong based on CDOWN add a bit in DMG beam refinement element in the polling BRP frame to indicate I-TXSS in SISO phase of training is present. The responder should not respond to polling if it does not receive such I-TXSS and the bit is set to 1 Rejected- Notice that the Sector Sweep Frame Type field of the DMG Beam Refinement element accompanying the EDMG Channel Measurement Feedback element indicates the type of packet or frame used in last sector sweep (see 18/0092r0). As a result, the error case mentioned in the comment can be avoided. 1147 169 8 in the last responder TXSS' does not seem correct change to 'in the last initiator TXSS' Accepted- TGay editor to make the changes shown in 11-18/0298r0 under all headings that include CID 1147. 1146 170 2 "TX antenna" should be "TX DMG antenna" as per comment Revised- TGay editor to make the changes shown in 11-18/0298r0 under all headings that include CID 1146. 2313 170 4 EDMG BRP request element should be mandatory in SISO because it is used by phase in p171 L7 Add a sentence 'The BRP frame shall include an EDMG BRP request element for requesting the and M configuration for the downlink MIMI phase training Revised- TGay editor to make the changes shown in 11-18/0298r0 under all headings that include CID 2313. 2310 170 5 The entire SISO of MU-MIMO BF training should be optional if phase is used because the SISO Feedback subphase does not help responders determine what awv/sector they should "change to '(mandatory for DL MIMO phase)' for SISO Feedback subphase Rejected- Notice that phase is based on the assumption that the initiator has antenna pattern reciprocity. The SISO phase is