Cross-link power save design for ap and non-ap stations
AssigneesSony Group Corporation, Sony Corporation of America
InventorsQing Xia, Salvatore Talarico
Life of this patent
Estimating the term…
Abstract
Cross link signaling in a WiFi protocol which supports cross link power management, having Automatic Power Save Delivery (APSD) on the AP side, and which includes unscheduled (U)-APSD and scheduled (S)-APSD, over one or multiple links or sub-channels. An explicit TWT for a broadcast TWT provides the flexibility of having a broadcast TWT SP between two subsequent negotiated broadcast TWT SPs. Individual/broadcast TWTs can be suspended and resumed for all member STAs toward improving efficiency of AP power saving. Additional elements and benefits are described.
Claims20
A multiple link device apparatus for communication in a wireless network while providing dynamic power saving (PS), the apparatus comprising:
- (a) a multiple link device (MLD) comprising multiple stations (STAs);
- (b) wherein all said STAs of the MLD are either access point (AP) STAs or non-AP STAs;
- (c) at least one processor of said MLD and a non-transitory memory storing instructions executable by the at least one processor for wirelessly communicating from the STAs of said MLD with other STAs on an IEEE 802.11wireless local area network (WLAN);
- and
- (d) wherein said instructions, when executed by the at least one processor, perform steps of a wireless communications protocol, comprising:
- (i) wherein said STA, and the other STAs of the MLD, can be in either a dozing state or in an active state;
- (ii) wherein said active state comprises both a fully powered state in which it can transmit and/or receive in a higher powered active state or higher power active mode, and a lower powered active state or lower power active mode in which it is capable of only listening;
- and
- (iii) wherein a cross-link signal is sent by said STA through an active link(s) to perform operations on at least one specific link(s) to wakeup a dozing AP or non-AP STA, or to put an active AP or non-AP STA into dozing mode, and suspend and resume target wait time (TWT) agreements and schedules for select TWT members or all TWT member STAs.
A multiple link device apparatus for communication in a wireless network while providing dynamic power saving (PS), the apparatus comprising:
- (a) a multiple link device (MLD) comprising multiple stations (STAs);
- (b) wherein all said STAs of the MLD are either access point (AP) STAs or non-AP STAs;
- (c) at least one processor of said MLD and a non-transitory memory storing instructions executable by the at least one processor for wirelessly communicating from the STAs of said MLD with other STAs on an IEEE 802.11 wireless local area network (WLAN);
- and
- (d) wherein said instructions, when executed by the at least one processor, perform steps of a wireless communications protocol, comprising:
- (i) wherein said STA, and the other STAs of the MLD, can be in either a dozing state or in an active state;
- (ii) wherein said active state comprises both a fully powered state in which it can transmit and/or receive in a higher powered active state (higher power active mode), and a lower powered active state (lower power active mode) in which it is capable of only listening;
- (iii) wherein a cross-link signal is sent by said STA through an active link(s) to perform operations on at least one specific link(s) to wakeup a dozing AP or non-AP STA, or to put an active AP or non-AP STA into dozing mode, and suspend and resume target wait time (TWT) agreements and schedules for select TWT members or all TWT member STAs;
- and
- (iv) wherein if said STA is operating as an AP STA, then it is configured for performing automatic power save delivery (APSD) including performing unscheduled-APSD (U-APSD) and scheduled-APSD (S-APSD), over one or multiple links or sub-channels.
A method of performing multiple link device communications in a wireless network while providing dynamic power saving (PS), comprising:
- (a) communicating between STAs of multiple link devices (MLDs) on an IEEE 802.11 wireless local area network (WLAN), with each of said MLDs comprising multiple stations (STAs) which are either access point (AP) STAs or non-AP STAs performing steps of a wireless communications protocol;
- (b) wherein said STA, and the other STAs of the MLD, can be in either a dozing state or in an active state;
- (c) wherein said active state comprises both a fully powered state in which it can transmit and/or receive in a higher powered active state or higher power active mode, and a lower powered active state or lower power active mode, in which it is capable of only listening;
- and
- (d) wherein a cross-link signal is sent by said STA through an active link(s) to perform operations on at least one specific link(s) to wakeup a dozing AP or non-AP STA, or to put an active AP or non-AP STA into dozing mode, and suspend and resume target wait time (TWT) agreements and schedules for select TWT members or all TWT member STAs.
Dependencies are inferred from the claim text.