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US 12,750,775 B2Granted
Coordinated R-TWT SP scheduling among multiple adjacent BSS according to non-ap STA needs
AssigneesSony Group Corporation, Sony Corporation of America
InventorsQing Xia, Salvatore Talarico
Life of this patent
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Abstract
A coordinated form of R-TWT SP scheduling taking into account the needs of non-AP STAs in adjacent BSS. A flag in the BSSID field is used to indicate if the AP is represented by the BSSID is a UHR AP. Mechanisms are described to support coordinated R-TWTs and the operation of UHR devices supporting these coordinated R-TWT. The protocol for UHR AP and UHR non-AP STAs allows for identifying possible interference with the OBSS, directly rescheduling, or performing negotiation with the UHR AP of the OBSS for scheduling the R-TWT SP.
Claims20
A station apparatus for communication in a wireless network, the apparatus comprising:
- (a) at least one modem coupled to at least one radio-frequency (RF) circuit, with each RF circuit connected to one or multiple antennas;
- (b) wherein said station (STA) is configured as a separate STA or as a STA within a multiple-link device (MLD);
- (c) a processor of said STA;
- (d) a non-transitory memory storing instructions executable by the processor for wirelessly communicating with other STAs on a IEEE 802.11 wireless local area network (WLAN);
- and
- (e) wherein said instructions, when executed by the processor, perform steps of a wireless communications protocol, comprising:
- (i) wherein said STA operates a wireless communications protocol as either a ultra high reliability (UHR) Access Point (AP) STA of its basic service set (BSS) or a UHR non-AP STA associated with the UHR AP in the BSS, for communicating with other STAs in the network;
- (ii) incorporating a flag in the basic service set identification (BSSID) field of UHR AP and UHR non-AP STAs to indicate if the AP represented by the BSSID is a UHR AP;
- and
- (iii) rescheduling restricted-target wake times (R-TWT) by the UHR AP to avoid overlapping and/or interfering its R-TWT service period (SP) with another BSS (OBSS) R-TWT SP, in response to detecting a signal from the OBSS which indicates it is an UHR AP or it is an UHR non-AP STA that is associate with an UHR AP that supports coordinated R-TWT and extracting information from that OBSS signal, and performing rescheduling when a UHR non-AP STA of the BSS indicates it could be interfered with by communications by the OBSS.
7 more elements
A station apparatus for communication in a wireless network, the apparatus comprising:
- (a) at least one modem coupled to at least one radio-frequency (RF) circuit, with each RF circuit connected to one or multiple antennas;
- (b) wherein said station (STA) is configured as a separate STA or as a STA within a multiple-link device (MLD);
- (c) a processor of said STA;
- (d) a non-transitory memory storing instructions executable by the processor for wirelessly communicating with other STAs on an IEEE 802.11 wireless local area network (WLAN);
- and
- (e) wherein said instructions, when executed by the processor, perform steps of a wireless communications protocol, comprising:
- (i) wherein said STA operates a wireless communications protocol as either an ultra high reliability (UHR) Access Point (AP) STA of its basic service set (BSS) or a UHR non-AP STA associated with the UHR AP in the BSS, for communicating with other STAs in the network;
- (ii) incorporating a flag in the basic service set identification (BSSID) field of UHR AP and UHR non-AP STAs to indicate if the AP represented by the BSSID is a UHR AP;
- (iii) rescheduling restricted-target wake times (R-TWT) by the UHR AP to avoid overlapping and/or interfering its R-TWT service period (SP) with another BSS (OBSS) R-TWT SP, in response to detecting a signal from the OBSS which indicates it is an UHR AP or it is an UHR non-AP STA that is associate with an UHR AP that supports coordinated R-TWT and extracting information from that OBSS signal, and performing rescheduling when a UHR non-AP STA of the BSS indicates it could be interfered with by communications by the OBSS;
- and
- (iv) wherein said UHR AP receives information from a UHR non-AP STA which supports coordinated R-TWT in its BSS, when that UHR non-AP STA detects an OBSS signal which supports coordinated R-TWT and sends information comprising the BSSID and R-TWT ID of that OBSS;
- wherein said UHR AP performs sending a management frame to said UHR non-AP STA in its BSS indicating that said UHR non-AP STA is to report additional information about the OBSS signal detected by UHR non-AP STA.
9 more elements
A method of communication between stations in a wireless network, comprising:
- (a) communicating between stations (STAs) in a wireless network in which STAs can be configured as either a single-link STA or as a STA within a multiple-link device (MLD) operating on an IEEE 802.11 protocol within a wireless local area network (WLAN);
- (b) operating a STA as either an ultra high reliability (UHR) Access Point (AP) STA of its basic service set (BSS) or a UHR non-AP STA associated with the UHR AP in the BSS, for communicating with other STAs in the network;
- (c) incorporating a flag in the basic service set identification (BSSID) field of UHR AP and UHR non-AP STAs to indicate if the AP represented by the BSSID is a UHR AP;
- and
- (d) rescheduling restricted-target wake times (R-TWT) by the UHR AP to avoid overlapping and/or interfering its R-TWT service period (SP) with another BSS (OBSS) R-TWT SP, in response to detecting a signal from the OBSS which indicates it is an UHR AP or it is an UHR non-AP STA that is associate with an UHR AP that supports coordinated R-TWT and extracting information from that OBSS signal, and performing rescheduling when a UHR non-AP STA of the BSS indicates it could be interfered with by communications by the OBSS.
2 more elements
Dependencies are inferred from the claim text.