321 results about "Wake time" patented technology

A station (STA) receives from an access point (AP) a frame indicating a start time and a wake duration of a restricted target wake time (r-TWT) service period (SP) of an r-TWT setup for the STA. The STA transitions to an awake state at or before the start time of the r-TWT SP. The STA receives, from the AP, during the r-TWT SP: a first frame comprising a traffic identifier (TID) associated with the r-TWT and having an end of service period (EOSP) field set to 0; or a trigger frame indicating an identifier of the STA. The STA transitions to a doze state, after expiration of the wake duration of the r-TWT SP, on condition of receiving, from the AP, after expiration of the wake duration of the r-TWT SP, a second frame comprising a TID associated with the r-TWT and having an EOSP field set to 1.

The invention discloses a real-time clock calibration method, device and equipment and a medium, and relates to the technical field of electric vehicle charging time calibration, and the method comprises the steps: obtaining a clock calibration parameter based on a preset time interval; executing a compensation error calculation process based on the clock calibration parameter to obtain a compensation error; and when a sleep instruction is received and it is determined that the vehicle is not in the sleep state, the compensation error is utilized to calibrate the wake-up timestamp, and a target wake-up timestamp is obtained. The method is used for solving the problem that in the prior art, when the vehicle is in the dormant state, the vehicle cannot be normally used due to the fact that the vehicle stops for a long time or exhausts the electric quantity of the storage battery in the dormant state, the target awakening timestamp is determined when the dormant instruction is received, the dormant vehicle control unit is awakened at the target awakening timestamp, and the dormant vehicle control unit is awakened at the target awakening timestamp. Therefore, the vehicle controller controls the high-voltage system to charge the storage battery, and the problem that the vehicle cannot be normally used due to the fact that the voltage of the storage battery is lower than the critical voltage is solved.

The invention discloses a self-powered cholesteric phase display screen display driving system and a control method thereof, and belongs to the technical field of display. The system comprises a low-light energy acquisition module, an energy management module, a control module and a display driving module. The control module controls the turn-off and turn-on of the voltage output function of the energy management module by outputting a sleep / wake-up signal, so that the system is charged by using ambient light during sleep, and image refreshing is quickly completed and the system enters sleep again during wake-up. By setting a balance point of wake-up time and energy consumption, it is ensured that refreshing energy consumption is lower than charging energy, so that energy self-balance and continuous work of the system in a luminous environment are achieved, and external charging is not needed. The problems that an existing cholesteric phase display needs frequent external charging during continuous work and a traditional light energy power supply scheme is low in efficiency in the low-light environment are mainly solved, self-powered continuous operation of the cholesteric phase display in the indoor and outdoor low-light environment is achieved, and use convenience is improved.

Presented herein are techniques for extending Target Wake Time (TWT) to provide for randomizing and changing media access control (MAC) address (RCM) signaling. According to certain embodiments, a client device operating in a wireless network determines a TWT for the client device. Next, the client device determines that it will change from using a first MAC address to a using second MAC address. Finally, the client device generates, for transmission to an access point device that serves wireless communication in the wireless network, a TWT signaling message. The TWT signaling message indicates the TWT for the client device and the second MAC address.

A method and system for restricted target wake time (r-TWT) coordination where a first AP in a basic service set (BSS) respects an r-TWT schedule of a second AP, where the second AP is in an overlapping basic service set (OBSS). The first AP acquires the r-TWT schedule of the second AP and indicates to the second AP that the first AP respects the r-TWT schedule of the second AP. The first AP provides to a station associated with the first AP an indication of the r-TWT schedule of the second AP to cause a frame exchange with the STA of the first AP to end at a beginning of a r-TWT service period of the second AP to respect the r-TWT schedule of the second AP.

The invention relates to the field of acousto-optic interaction control, and discloses an intelligent lamp awakening method, device and equipment and a storage medium, which are used for improving awakening comfort and experience. The intelligent lamp awakening method comprises the following steps: acquiring awakening parameters preset by a user, wherein the awakening parameters comprise target awakening time, an expected illumination change mode and an audio content type; performing illumination initialization processing based on the wake-up parameter to obtain an initial illumination state; performing sunrise and sunset simulation algorithm processing according to the initial illumination state to obtain an illumination effect dynamically changing along with time; performing acousto-optic cooperative control processing based on the illumination effect and the audio content type to obtain a target audio matched with the illumination effect; and controlling the intelligent wake-up lamp to execute corresponding illumination and audio output according to the illumination effect and the target audio.

Systems, methods, and devices for managing target wake time (TWT) schedules may include a first device of a wireless local area network (WLAN) which receives information relating to drift of a start time of a target wake time (TWT) schedule from a second device of the WLAN. The first device may modify a start time for a subsequent TWT service period, according to the information relating to the drift of the start time from the second device.

A method and an apparatus for rescheduling a target wake time (TWT) service period (SP) in a wireless LAN system are disclosed. The method performed by a station (STA) in a wireless LAN system, according to one embodiment of the present disclosure, comprises the steps of: establishing an agreement related to a restricted target wake time (r-TWT); and transmitting, to one or more other STAs, at least one frame including a TWT information field. Here, the TWT information field can include an r-TWT-related subfield, all TWT subfields, and the next TWT subfield, and rescheduling-related information about the r-TWT SP scheduled for the STA can be indicated on the basis of the r-TWT-related subfield, all the TWT subfields, and the next TWT subfield.

Provided is a negotiation method for fast access point transition. The method is performed by a station, and includes: pre-negotiating first information with a target access point, wherein the first information comprises at least one of a target wake time (TWT), a restricted TWT (R-TWT), or a traffic identifier-to-link mapping.

A first access point (AP) participates in a multi-AP coordination for a first target wake time (TWT) schedule established by a second AP. The first AP advertises, to one or more stations (STAs) within a basic service set (BSS) of the first AP, a TWT schedule that is identical to the first TWT schedule established by the second AP. When a second TWT schedule is established by the second AP, the first AP advertises, to the one or more STAs within the BSS of the first AP, a TWT schedule that is identical to the second TWT schedule established by the second AP. Alternatively, when one or more second TWT schedules are established by the second AP, the first AP determines whether to advertise the one or more second TWT schedules on a per-TWT schedule basis.

The embodiment of the invention discloses a service scheduling method, device and system. The sub-device will negotiate a power saving time and a wake-up time for the STA with the associated STA, i.e. When the STA is in a power saving state and when to handle a wake-up state. And then, the sub-device reports the negotiated wake-up time of the STA to the master device. And further, the master device schedules related data of the STA according to the wake-up time of the STA. Thus, before performing service scheduling on each STA, the master device can acquire the STA wake-up time negotiated by each sub-device and the associated STA in advance, and does not need to frequently interact with each sub-device to acquire the real-time state of each STA. The master device can more efficiently perform service scheduling on each STA at a proper time by centrally managing and controlling the wake-up time of each STA.

A wireless communication protocol using CSMA / CA, EDCA and R-TWT to prioritize RTA traffic transmissions. During an R-TWT SP, the RTA traffic is prioritized for transmission and mechanisms are provided for assuring proper indications and termination of the R-TWT SP. During this process, member STAs communicate with the R-TWT scheduling AP when they have no more frames to send. The R-TWT scheduling AP can also terminate the R-TWT SP before its scheduled end time, allowing non-member STAs to immediately contend for the channel. In addition, the R-TWT scheduling AP can exchange frames with STAs, that have an R-TWT feature but are not R-TWT member STAs, after frame exchanges with the R-TWT member STAs during the R-TWT SP have been completed.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for protecting latency-sensitive communications among multi-link devices (MLDs). An access point (AP) MLD may establish multiple communication links with a non-AP MLD and schedule a restricted target wake time (r-TWT) service period (SP) on one of the links (the “r-TWT link”). In some aspects, when a transmit opportunity (TXOP) acquired on a non-r-TWT link overlaps the r-TWT SP, the TXOP may be extended to support an exchange of latency-sensitive traffic on the non-r-TWT link. In some other aspects, any TXOPs occurring on non-r-TWT links may be terminated prior to the start of the r-TWT SP so that latency-sensitive traffic can be exchanged on the r-TWT link during the SP. An AP MLD also may schedule SPs on multiple communication links. In some aspects, the AP MLD may transfer a TWT agreement between the communication links.

Embodiments of the invention provide methods and devices for restricted target awake time (R-TWT) operation for latency sensitive traffic in a WLAN. The method carried out by an Access Point (AP) in an AP MLD comprises: sending a first response to a first station (STA) in a non-AP MLD the first STA to map at least one Traffic Identifier (TID) for latency sensitive traffic to at least one link set up between the AP MLD and the non-AP MLD, wherein the AP MLD comprises a plurality of APs and the non-AP MLD comprises a plurality of non-AP STAs, and sending a R-TWT response to the first STA to set up R-TWT agreement on any one or more of the at least one link to which the at least one TID for latency sensitive traffic has been mapped.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for managing data traffic in restricted target wake time (TWT) service periods (SPs). In some aspects, an access point (AP) may transmit a packet, at the beginning of a restricted TWT SP, that signals all non-member wireless stations (STAs) to defer access to the wireless medium for at least a threshold duration. Upon receiving the packet, any non-member STAs that are associated with the AP may set their network allocation vectors (NAVs) according to the duration indicated by a duration field of the received packet. In some implementations, low-latency STAs that are members of the TWT SP may not set their NAVs according to the duration field of the received packet. Instead, the low-latency STAs may access the wireless medium before the NAVs associated with the non-member STAs expire.

Disclosed is a multi-link device comprising multiple stations operating in multiple links, respectively. The multi-link operation device comprises: a transceiver; and a processor. The processor transmits a target wake time (TWT) element from a first station which is one of the multiple stations and is coupled to a first AP in a first link, so as to request a TWT agreement with a second station operating in a second link, for a second AP coupled to the second station.

A method for operating a sleep assistant during a charging process of a vehicle includes receiving a predicted charging time and determining a preferred sleep duration of a vehicle occupant. The method also includes determining a wake-up time of the vehicle occupant depending on at least one of the group consisting of the predicted charging time and the preferred sleep duration of the vehicle occupant. The method further includes adjusting the wake-up time if an extension of the predicted charging time is detected by the vehicle, and providing a wake-up setting to the vehicle occupant depending on the wake-up time or the adjusted wake-up time.

In one embodiment, a method includes: sending, from a station to an access point, a notification of a termination of a service period in which the station is awake, the notification comprising a station-based initiation of the termination of the service period, the station and the access point present within a wireless local area network; receiving, in the station from the access point, an acknowledgement of the notification; and in response to the acknowledgement, terminating the service period.

A non-access point multi-link device (non-AP MLD) in a wireless network, the non-AP MLD comprising a memory and a processor coupled to the memory, the processor is configured to: establish a membership for a restricted target wake time (R-TWT) schedule with an access point (AP) for a set of traffic identifiers (TIDs); transmit, to the AP, one or more frames corresponding to one or more TIDs that belongs to the set of TIDs within a service period (SP); transmit, to the AP, an indication indicating pending traffic with a TID that does not belong to the first set of TIDs; receive, from the AP, an indication indicating acceptance of transmission of the pending traffic; and transmit, to the AP, one or more frames corresponding to the TID that does not belong to the first set of TIDs.

A first access point (AP) transmits to a second AP a first frame requesting first restricted target wake time (R-TWT) information of the second AP based on not receiving a beacon frame of the second AP within a first period from a target beacon transmission time (TBTT) of the second AP. The first AP receives from the second AP a second frame comprising the first R-TWT information of the second AP in response to the first frame.

The invention discloses a voice wake-up method and device, the device comprises a voice wake-up device, a voice wake-up device system, a computer program and a computer readable storage medium, the voice wake-up method comprises the following steps: obtaining a first channel audio signal and a second channel audio signal in a wake-up time period of each voice wake-up device; calculating a coherent reverberation signal-to-noise ratio of each voice wake-up device based on the first channel audio signal and the second channel audio signal of each voice wake-up device; and determining a target voice wake-up device based on the coherent reverberation signal-to-noise ratio of each voice wake-up device, and controlling the target voice wake-up device to perform voice interaction with the user. Through the above mode, according to the voice wake-up method, the coherent reverberation signal-to-noise ratio of each voice wake-up device can be calculated through the first channel audio signal and the second channel audio signal, and the target voice wake-up device for straight-face wake-up is determined based on the coherent reverberation signal-to-noise ratio, so that the straight-face wake-up effect is improved.

This disclosure receives a first frame including a first element used to request to set up an individual target wake time (TWT) service period (SP). The first element includes first information that indicates a first link on which an individual TWT SP is requested to be set up, and second information that indicates N second links on which individual TWT SPs are requested to be set up. The N second individual TWT SPs set up on the N second links need to be aligned with a first individual TWT SP on the first link. The approach sets up the first individual TWT SP on the first link and sets up the N second individual TWT SPs on the N second links based on the first element, and performs communication on the corresponding N second links based on the first individual TWT SP and the N second individual TWT SPs.

Embodiments of the invention provide methods and devices for restricted target awake time (R-TWT) operation for latency sensitive traffic in a WLAN. The method carried out by an Access Point (AP) in an AP MLD comprises: sending a first response to a first station (STA) in a non-AP MLD the first STA to map at least one Traffic Identifier (TID) for latency sensitive traffic to at least one link set up between the AP MLD and the non-AP MLD, wherein the AP MLD comprises a plurality of APs and the non-AP MLD comprises a plurality of non-AP STAs, and sending a R-TWT response to the first STA to set up R-TWT agreement on any one or more of the at least one link to which the at least one TID for latency sensitive traffic has been mapped.

A transmission control method, a first non-access point device, and an access point device are provided. The method includes that: a first non-access point device receives first information transmitted by an access point device. Herein, the first information is used for indicating a first Target Wake Time (TWT) Service Period (SP). During the first TWT SP, Peer-to-Peer (P2P) transmission is prioritized on at least one P2P link including a first P2P link between the first non-access point device and a second non-access point device.

In a wireless local area network (WLAN) system, a transmitting STA may transmit wake-up time information related to a receiving STA to the receiving STA. The transmitting STA may transmit a sensing start frame to the receiving STA during a wake-up time. The transmitting STA may transmit a sensing frame to the receiving STA. The transmitting STA may transmit a feedback requesting frame for the sensing frame to the receiving STA. The transmitting STA may receive a feedback frame for the sensing frame from the receiving STA. The wake-up time information may include duration information for maintaining an awake state in which the receiving STA can monitor a signal received from the transmitting STA, and period information for transitioning to the awake state.

The invention discloses a power consumption scheduling control method for dynamically adjusting RTC awakening of a truck lithium battery. The power consumption scheduling control method comprises the following operation steps of 1, judging the state of the lithium battery; 2, continuously detecting an RTC interruption mark; 3, if the BMS judges that the lithium battery does not need to enter the dormancy state, returning to the step 1; if the BMS system judges that the lithium battery needs to enter dormancy, the BMS system enters a dormancy process, RTC interruption awakening is configured, and the next step is executed; step 4, performing partition configuration on the RTC interrupt wake-up time; 5, enabling the RTC to interrupt and wake up, and setting the RTC wake-up interrupt according to the RTC wake-up time; and step 6, RTC configuration is completed, BMS dormancy is started after 30 seconds, and the system is powered off. The method has the advantages that adaptive adjustment of the RTC wake-up period is realized by analyzing the internal voltage of the battery, and the standby power consumption of the system is reduced to the maximum extent on the premise of ensuring the safety of the battery.

The present invention relates to the technical field of electric vehicle charging. Provided are a method for performing supplementary charging on a low-voltage storage battery of a vehicle, and a related device. The method comprises: after a vehicle is powered off, detecting whether a CAN of the vehicle is in a sleep state; when the CAN network is not in the sleep state, determining whether the vehicle meets a low-voltage supplementary charging trigger condition, wherein the low-voltage supplementary charging trigger condition comprises the voltage of a storage battery of the vehicle being less than a preset voltage and the number of instances of supplementary charging in a single power-off cycle not exceeding a preset number of instances; when the CAN is in the sleep state, acquiring a sleep time, so as to wake up the sleeping CAN when the sleep time satisfies a wake-up time; and when the vehicle meets the low-voltage supplementary charging trigger condition or the CAN in the sleep state is woken up, sending a low-voltage supplementary charging request, so as to perform supplementary charging on the vehicle.

Various embodiments include a method implemented in a user equipment (UE) for synchronizing resource timing of at least two wireless protocols. The UE may obtain communication timing information of a user device, transmit the communication timing information of the user device to a network node, and configure a first resource timing of an uplink or a downlink between the UE and the user device based on the communication timing information. The UE may request a configuration of a second resource timing for another uplink or downlink between the UE and the network node based on the communication timing information. Sending communication timing information may include requesting a discontinuous reception (DRX) configuration adjustment that causes a discontinuous reception (DRX) period of the UE to at least partially coincide with a target wake time (TWT) of the user device. Configuring a first resource timing may include adjusting a timing of the TWT based on a DRX configuration of the user device.

A first access point (AP) includes a processor. The processor is configured to cause the first AP to perform a negotiation for Multi-AP (MAP) target wake time (TWT) coordination. The first AP also includes a transceiver operably coupled to the processor. The transceiver is configured to, during the negotiation for MAP TWT coordination, (i) transmit a MAP coordination request frame, and (ii) receive, from a second AP, a MAP coordination response frame. The second AP is an overlapping basic service set (OBSS) AP for the first AP.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for managing data traffic in restricted target wake time (TWT) service periods (SPs). In some aspects, an access point (AP) may transmit a packet, at the beginning of a restricted TWT SP, that signals all non-member wireless stations (STAs) to defer access to the wireless medium for at least a threshold duration. Upon receiving the packet, any non-member STAs that are associated with the AP may set their network allocation vectors (NAVs) according to the duration indicated by a duration field of the received packet. In some implementations, low-latency STAs that are members of the TWT SP may not set their NAVs according to the duration field of the received packet. Instead, the low-latency STAs may access the wireless medium before the NAVs associated with the non-member STAs expire.