restrictions because it declared the medium to be IDLE on SR. In the non-zero count case with an empty queue, the countdown begins anyway, because if you have a count and you have what is indicated to be an idle medium, you count down, regardless of your TX queue condition. Graham "If a STA ignores an inter-BSS PPDU Replace cited text with "If a STA Revised agree – Smith following the procedure in 27.9.2.1 ignores an inter-BSS PPDU with the comment. (General), using a chosen SRG following the procedure in Apply the changes OBSS_PD level, or a chosen 27.9.2.1 (General), using a proposed in doc . OBSS_PD level shall start an chosen SRG OBSS_PD level, or a OBSS_PD SR transmit power chosen non-SRG OBSS_PD level, restriction period." Does not read then the STA shall start an right. . OBSS_PD SR transmit power restriction period. " Yusuke We should consider the case a STA Two suggestion. Rejected – Tanaka whose queue is empty ignored an 1. OBSS_PD SR transmit power commenter does inter-BSS PPDU for receiving restriction period shall be not state how the opportunity. The STA does not applied to only a STA which STA would know intend transmission which would starts countdown of backoff. that it will not cause interference, so the 2. Define upper limit of cause OBSS_PD SR transmit power OBSS_PD SR transmit power interference, restriction period should not be restriction period. without this, the applied to the STA. Otherwise the proposed change restriction period for such a STA, is incomplete. As e.g. a light traffic device, is going for applying only to be unreasonably long. when there is a non-zero count, see the resolution for CID 14118. Regarding the proposal for an upper bound, there is no clear answer as to what that upper bound should be, especially given that the EDCA parameters are dynamic. A STA can choose to not use OBSS_PD and thereby avoid the risk of a long restriction period.
restrictions because it declared the medium to be IDLE on SR. In the non-zero count case with an empty queue, the countdown begins anyway, because if you have a count and you have what is indicated to be an idle medium, you count down, regardless of your TX queue condition. Graham Smith "If a STA ignores an inter-BSS PPDU following the procedure in 27.9.2.1 (General), using a chosen SRG OBSS_PD level, or a chosen OBSS_PD level shall start an OBSS_PD SR transmit power restriction period." Does not read right. . Replace cited text with "If a STA ignores an inter-BSS PPDU following the procedure in 27.9.2.1 (General), using a chosen SRG OBSS_PD level, or a chosen non-SRG OBSS_PD level, then the STA shall start an OBSS_PD SR transmit power restriction period. " Revised – agree with the comment. Apply the changes proposed in doc . Yusuke Tanaka We should consider the case a STA whose queue is empty ignored an inter-BSS PPDU for receiving opportunity. The STA does not intend transmission which would cause interference, so the OBSS_PD SR transmit power restriction period should not be applied to the STA. Otherwise the restriction period for such a STA, e.g. a light traffic device, is going to be unreasonably long. Two suggestion. 1. OBSS_PD SR transmit power restriction period shall be applied to only a STA which starts countdown of backoff. 2. Define upper limit of OBSS_PD SR transmit power restriction period. Rejected – commenter does not state how the STA would know that it will not cause interference, without this, the proposed change is incomplete. As for applying only when there is a non-zero count, see the resolution for CID 14118. Regarding the proposal for an upper bound, there is no clear answer as to what that upper bound should be, especially given that the EDCA parameters are dynamic. A STA can choose to not use OBSS_PD and thereby avoid the risk of a long restriction period.
11-17-1852-07-00ax-cr-for-27-9.docx