37 Ahmadreza 25.5.2 When multiple Trigger frames Add the described Revised. Hedayat and/or HEC feilds with UL MU behavior of the STA that Some limitations response scheduling (Trigger aggregates multiple are included which Info) in the MAC header of Trigger frames and/or are needed for MPDU(s) are carried within the HEC fields with UL MU interoperation. same PPDU, some of the fields response scheduling It is not necessary of the Common Info of the (Trigger Info) in MAC to instruct the AP Trigger frame(s) and the HEC header of MPDU(s) on how to all field should be the same. For within the same PPDU. possible erroneous instance, the duration of the settings of the upcoming trigger-based UL MU trigger infromation should be the same across all across STAs, such Trigger frame(s) and HEC as different fields with UL MU response duration. Given the scheduling (Trigger Info) in the PHY limitations, MAC header of MPDU(s). any AP should Similarly, the LTF-type and know what to do. number and GI duration should be the same across all the See resolution in control fields that carry Trigger doc 16/929r1 info. 38 Ahmadreza 25.5.2 Other behaviors of a STA that As in the comment. Revised. Hedayat schedules UL MU transmission Some limitations via HEC field with UL MU are included which response scheduling should be are needed for included, such as: (a) in a interoperation. unicast frame the content of It is not necessary HEC field with UL MU to instruct the AP response scheduling across an on how to avoid all AMPDU should be the same, possible erroneous (b) within a multicast frame settings of the there should not be any HEC trigger infromation field with UL MU response across STAs, such scheduling (since it'd not be as different clear which of the recepinets of duration. Given the the multicast frame should PHY limitations, respond), etc any AP should know what to do. See resolution in doc
37 Ahmadreza Hedayat 25.5.2 When multiple Trigger frames and/or HEC feilds with UL MU response scheduling (Trigger Info) in the MAC header of MPDU(s) are carried within the same PPDU, some of the fields of the Common Info of the Trigger frame(s) and the HEC field should be the same. For instance, the duration of the upcoming trigger-based UL MU should be the same across all Trigger frame(s) and HEC fields with UL MU response scheduling (Trigger Info) in the MAC header of MPDU(s). Similarly, the LTF-type and number and GI duration should be the same across all the control fields that carry Trigger info. Add the described behavior of the STA that aggregates multiple Trigger frames and/or HEC fields with UL MU response scheduling (Trigger Info) in MAC header of MPDU(s) within the same PPDU. Revised. Some limitations are included which are needed for interoperation. It is not necessary to instruct the AP on how to all possible erroneous settings of the trigger infromation across STAs, such as different duration. Given the PHY limitations, any AP should know what to do. See resolution in doc 16/929r1 38 Ahmadreza Hedayat 25.5.2 Other behaviors of a STA that schedules UL MU transmission via HEC field with UL MU response scheduling should be included, such as: (a) in a unicast frame the content of HEC field with UL MU response scheduling across an AMPDU should be the same, (b) within a multicast frame there should not be any HEC field with UL MU response scheduling (since it'd not be clear which of the recepinets of the multicast frame should respond), etc As in the comment. Revised. Some limitations are included which are needed for interoperation. It is not necessary to instruct the AP on how to avoid all possible erroneous settings of the trigger infromation across STAs, such as different duration. Given the PHY limitations, any AP should know what to do. See resolution in doc
11-16-0929-02-00ax-cr-ul-mu-operation.docx