Network allocation vector (NAV) operation in multi-access point (AP) coordination
One example discloses a wireless device including: a wireless transceiver configured to receive a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device; and a controller configured to set a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame, wherein the wireless transceiver is further configured to transmit a physical protocol data unit (PPDU) to the second wireless AP even if the NAV timer of the wireless device is non-zero.
1 . A wireless device comprising:
a wireless transceiver configured to receive a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device; and
a controller configured to set a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame,
wherein the wireless transceiver is further configured to transmit a physical protocol data unit (PPDU) to the second wireless AP.
2 . The wireless device of claim 1 , wherein the PPDU comprises a trigger based (TB) PPDU.
3 . The wireless device of claim 1 , wherein the PPDU comprises a non-trigger based (TB) PPDU.
4 . The wireless device of claim 1 , wherein the wireless device comprises a non-AP station (STA) device.
5 . The wireless device of claim 1 , wherein the second wireless AP shares a transmit opportunity (TXOP) of the first wireless AP.
6 . The wireless device of claim 5 , wherein the controller is further configured to identify the first frame as an intra-basic service set (BSS) PPDU and to update an intra-BSS NAV timer of the wireless device in response to the intra-BSS PPDU.
7 . The wireless device of claim 6 , wherein the first wireless AP, the second wireless AP, and the wireless device belong to the same BSS.
8 . The wireless device of claim 6 , wherein the first wireless AP and the wireless device belong to different BSSs, and wherein the second wireless AP and the wireless device belong to the same BSS.
9 . The wireless device of claim 8 , wherein the wireless transceiver is further configured to receive BSS information of a plurality of wireless APs for multi-AP coordination.
10 . The wireless device of claim 8 , wherein the first frame comprises a multi-AP control frame that includes an indication of intra-BSS NAV timer update of the wireless device upon reception of the multi-AP control frame.
11 . The wireless device of claim 10 , wherein the multi-AP control frame comprises a Multi User Request to Send (MU-RTS) triggered TXOP sharing (TXS) frame.
12 . The wireless device of claim 5 , wherein the second frame comprises a trigger frame that contains a carrier sense (CS) required subfield that is set to zero.
13 . A method for wireless communications, comprising:
receiving a first frame from a first wireless access point (AP) for multi-AP coordination that is not associated with the wireless device and a second frame from a second wireless AP for multi-AP coordination that is associated with the wireless device;
setting a network allocation vector (NAV) timer of the wireless device to a non-zero value in response to the first frame and the second frame; and
transmitting a physical protocol data unit (PPDU) to the second wireless AP.
14 . The method of claim 13 , wherein the PPDU comprises a trigger based (TB) PPDU.
15 . The method of claim 13 , wherein the PPDU comprises a non-trigger based (TB) PPDU.
16 . The method of claim 13 , wherein the second wireless AP shares a transmit opportunity (TXOP) of the first wireless AP.
17 . The method of claim 16 , further comprising identifying the first frame as an intra-basic service set (BSS) PPDU and updating an intra-BSS NAV timer of the wireless device in response to the intra-BSS PPDU.
18 . The method of claim 17 , wherein the first wireless AP and the second wireless AP belong to different BSSs.
19 . A non-access point (AP) station (STA) device, the non-AP STA device comprising:
a wireless transceiver configured to receive a first frame from a first wireless AP for multi-AP coordination that is not associated with the non-AP STA device and a second frame from a second wireless AP for multi-AP coordination that is associated with the non-AP STA device, wherein the second wireless AP shares a transmit opportunity (TXOP) of the first wireless AP; and
a controller configured to set a network allocation vector (NAV) timer of the non-AP STA device to a non-zero value in response to the first frame and the second frame,
wherein the wireless transceiver is further configured to transmit a trigger based (TB) physical protocol data unit (PPDU) to the second wireless AP.