633 results about "Beacon frame" patented technology

A non-access point multi-link device (non-AP MLD) receives from an access point multi-link device (AP MLD), while in a first power save mode, a beacon frame comprising a traffic indication map (TIM) element indicating downlink buffered units (BUs) for the non-AP MLD, where during the first power save mode the non-AP MLD wakes to listen for beacon frames on one of enabled links at least once within a listen interval. After receiving the downlink BUs from the AP MLD, the non-AP MLD switches to a second power save mode, where during the second power save mode the non-AP MLD wakes to listen for beacon frames at each target beacon transmission time (TBTT) on the enabled links until a timer expires.

Disclosed are: a traffic transmission method performed by a first multi-link device (MLD) comprising a plurality of stations respectively operating on a plurality of links in a wireless communication system; and an apparatus. In detail, an MLD of the present invention receives a beacon frame from a second MLD including a plurality of access points (APs) operating on the plurality of links, respectively, and transmits and receives a data unit on the basis of the beacon frame. Here, the beacon frame includes a multi-link traffic indication element indicating mapping between at least one traffic identifier (TID) for a buffered unit (BU) of the plurality of APs from among a plurality of TIDs and the plurality of links, according to whether or not mapping between the plurality of TIDs and the plurality of links is default mapping for downlink or bidirectional.

The invention provides an HPLC (High Performance Liquid Chromatography) station area cooperative communication method based on clock synchronization, which comprises the following steps: step 1, multi-dimensional data acquisition and broadcasting: each concentrator periodically acquires clock precision, stability and reliability data, and sends a beacon frame containing a timestamp and a health degree score through a power line carrier broadcasting channel; step 2, dynamically calculating the index distinction degree by using an entropy weight method, adaptively allocating weights, and electing an optimal main CCO in real time; step 3, dual-mode PID cooperative control: the main CCO adopts a dual-mode switching strategy of a dynamic PID algorithm and a chaotic fractional order PID algorithm; 4, monitoring a synchronization state in real time by constructing a clock check network, and optimizing a fault isolation strategy in combination with weighted scoring to realize that the state switching time of the master node and the slave node is less than or equal to 50ms; cooperative communication is realized on the basis of completing synchronization of the concentrators CCO in the whole network. Redundant message transmission is reduced through a dynamic parameter resynchronization mechanism, and the utilization rate of network resources is optimized.

This disclosure provides systems, methods, and apparatuses for wireless communication. An example wireless communication device broadcasts a first beacon frame over a first communication link of an access point (AP) multi-link device (MLD) (AP MLD), and broadcasts a second beacon frame over a second communication link of the AP MLD. The first beacon frame indicates transmission of group data over the first communication link, and the second beacon frame indicates transmission of the group data over the second communication link. The wireless communication device transmits the group data, concurrently over the first and second communication links, to one or more wireless stations (STAs). Another example wireless communication device obtains one or more beacon frames indicating buffered group data in an AP MLD for at least the wireless communication device, selects one or more group communication links, and obtains the group data over the one or more selected group communication links.

The invention discloses a power line carrier communication protocol data link layer simulation method, which comprises the following steps of: constructing a physical layer interface simulation module, simulating power line carrier or wireless air interface transmission through TCP socket communication, and creating a high-priority task process to process time slot-level time sequence synchronization for triggering a physical layer transceiving action at a specified time slot; configuring a time sequence synchronization control mechanism, obtaining a timestamp carried by a beacon frame sent by a concentrator, calling a clock synchronization function to align a site local clock with the timestamp when receiving the head of the beacon frame, adding delay compensation before sending data, and delaying and starting a physical layer receiving action to offset IP network transmission delay when receiving the data; a data frame processing flow is realized, a header callback function is controlled through a registration frame to respond to a physical layer state change, TCP message data is cached by using an annular queue, and a physical layer interface simulation module analyzes a message, distributes a memory and processes a load at a specified time slot after time sequence synchronization.

A method includes sending, by a master beacon device and one or more beacon repeater devices, ultra-wideband (UWB) beacon frames. The UWB beacon frames are transmitted as interleaved pairs of UWB beacon frames. Each interleaved pair includes a first UWB beacon frame and a second UWB beacon frame. For each interleaved pair, the first UWB beacon frame and the second UWB beacon frame are transmitted with a master time delay. The method further includes receiving, by one or more tag devices, at least one of the interleaved pairs of UWB beacon frames.

A non-AP MLD operates in an EML mode that applies in a set of EML links. The non-AP MLD receives, by a first affiliated station, a first beacon frame over a first link of the EML links, the first beacon frame including a TBTT related to a second beacon frame. Moreover, the non-AP MLD configures the first affiliated station to be in a receiving state at the TBTT to receive the second beacon frame.

A method and a device for transmitting or receiving a frame in a wireless LAN supporting EMLSR are disclosed. A method of a first STA comprises the steps of: transitioning the operation state of the first STA from a listening operation state to an EMLSR operation state by considering a TBTT of a first AP; receiving a beacon frame from the first AP in the EMLSR operation state; when the beacon frame indicates that a data unit to be transmitted to the first STA exists in the first AP, transmitting a PS-Poll frame to the first AP; and receiving a data frame including the data unit from the first AP in the EMLSR operation state.

Disclosed are: a traffic transmission method performed by a first multi-link device (MLD) comprising a plurality of stations respectively operating on a plurality of links in a wireless communication system; and an apparatus. In detail, an MLD of the present invention receives a beacon frame from a second MLD including a plurality of access points (APs) operating on the plurality of links, respectively, and transmits and receives a data unit on the basis of the beacon frame. Here, the beacon frame includes a multi-link traffic indication element indicating mapping between at least one traffic identifier (TID) for a buffered unit (BU) of the plurality of APs from among a plurality of TIDs and the plurality of links, according to whether or not mapping between the plurality of TIDs and the plurality of links is default mapping for downlink or bidirectional.

An access point (AP), a station (STA), and a wireless communication method are disclosed. The wireless communication method comprises: a first STA receiving a beacon frame or a probe response frame from a first AP; the first STA may be a type 1 STA affiliated to a non-AP multilink device (MLD). The first AP may be a type 1 AP affiliated to an AP MLD having zero or at least one affiliated type 2 AP. The beacon frame or the probe response frame may include a target beacon transmission time (TBTT) information field, a multi-link control field, and / or a common information field.

Systems and techniques are provided for wireless communications. A process can include determining, based on an estimated vertical position of a user equipment (UE) and a configured average floor height value, a floor level estimate corresponding to the UE. A Downlink Received Signal Strength Indicator (DL-RSSI) value associated with a respective beacon frame received by the UE from each access point (AP) of a plurality of APs can be determined. A first AP group can include a first subset of the plurality of APs associated with DL-RSSI values greater than a threshold, and a second AP group can include a second subset of the plurality of APs associated with DL-RSSI values less than the threshold. The floor level estimate corresponding to the UE can be validated based on a comparison between the floor level estimate and respective floor level information associated with the first AP group.

During operation, an electronic device may perform, using a scanning radio, a scan of a band of frequencies, where the scanning radio only receives frames. Then, the electronic device may receive, using the scanning radio, a beacon frame associated with a second electronic device, where the beacon frame includes information associated with operation of a third electronic device in a second band of frequencies. Next, the electronic device may perform, using a data radio, a second scan of the second band of frequencies based at least in part on the information, where the data radio transmits and / or receives second frames, and where the second scan is performed, at least in part, while the scan is performed. Note that the electronic device may not be associated with (or may not have a connection with) the second electronic device and / or the third electronic device.

Embodiments of a method and apparatus for communications are disclosed. In an embodiment, a communications device includes a controller configured to generate a beacon frame based on Multiple Basic Service Set Identifier (MBSSID) support information and a wireless transceiver configured to wirelessly transmit the beacon frame to a second communications device.

The invention relates to the technical field of terminal communication, and provides a team state synchronization method based on ad hoc network communication, an intelligent terminal and a medium, after a plurality of intelligent terminals complete team networking, a first intelligent terminal elected as a team master device broadcasts a synchronization beacon frame, enabling the second intelligent terminal to enter a corresponding working state after receiving the synchronous beacon frame; predicting whether the bit error rate in a future short time is increased or not based on the channel impulse response fed back by the second intelligent terminal and the real-time position coordinates; when the predicted bit error rate is increased, forward error correction coding redundancy is increased in a pre-sent light effect instruction, and a target light effect instruction is obtained; and the target lighting effect instruction is sent to the second intelligent terminal, so that the second intelligent terminal controls the partition lamp group to output the corresponding lighting effect according to the received target lighting effect instruction, and visual synchronization of the team state is realized. According to the method, the accuracy of light effect instruction transmission can be guaranteed, and efficient visual synchronization of the team state is realized.

A method is provided in which an AP of a MLD AP device may decide to include all out-of-link BSS parameters updates in a beacon frame (beacon). A flag is included in the beacon frame to indicate that all updates are included in the beacon frame and thus the client device that receives the beacon frame should not send probe request frames (probe requests) to obtain these updates. Thus, a non-AP MLD that receives a beacon frame with the above indication and that has all critical BSS parameters corresponding to the Change Sequence Number (CSN) that preceded the updates indicated by the AP, should not send probe requests to obtain the updated parameters. The number of bits to assign to the complete BSS Update Report Indication flag may vary depending on the number of updates to be reported.

The invention discloses a PCS parallel operation clock synchronization method, a storage medium and a PCS parallel operation system.The PCS parallel operation clock synchronization method comprises the steps that carrier signals are extracted from a power line, and beacon frames in the carrier signals are extracted; and updating the local time according to the timestamp information of the beacon frame so as to realize clock synchronization. According to the method, the problems of poor expansibility and relatively high delay in the prior art are solved through a broadband power line carrier technology, and a high-precision beacon timestamp is provided; the energy storage converters in the parallel operation state can update the local time of the energy storage converters through the timestamp information so as to realize high-precision clock synchronization.

This disclosure provides methods, components, devices and systems for enhancements to request to send (RTS) and clear to send (CTS) exchanges. A first wireless device may receive a beacon frame indicating for the first wireless device to monitor a first channel for a first frame that schedules communication via one or more channels. The first wireless device may receive, from a second wireless device, the first frame indicating a channel bandwidth and a puncturing pattern of multiple available puncturing patterns for the channel bandwidth. The puncturing pattern may be associated with a first subset of a set of multiple channels of the channel bandwidth. The first wireless device may transmit, to the second wireless device, a second frame indicating that a second subset of channels is available and may receive one or more data packets via the second subset of channels.

The invention discloses a wireless sensing method and device, and belongs to the technical field of sensing. An AP in a WLAN transmits a beacon frame with a first antenna and receives a reverberation signal with a second antenna, the reverberation signal being obtained by reflection or scattering of the beacon frame. And then the AP performs environment perception according to the received echo signal. According to the method and the device, the capability that the AP can receive and send messages by itself is utilized, the beacon frame is sent by the same AP and the echo signal of the beacon frame is received, and compared with the AP, the signal receiving and sending position is always known, so that the environment sensing precision is improved, the deployment position of the AP is not limited, and the method and the device can be flexibly applied to various scenes. In addition, the beacon frame is periodically transmitted to declare the presence of the AP. Therefore, the AP realizes environmental perception by using the beacon frame without additional packet sending, channel resources can be saved, environmental perception can be completed in a normal communication process, and integration of communication and perception is realized.

The invention relates to the technical field of communication, and discloses an access point, terminal equipment and a short-distance communication time synchronization method and system.The access point equipment and the terminal equipment each comprise a baseband signal processing unit, a radio frequency unit, an antenna, a global time counter and a clock compensation module. The time synchronization method is executed by a target terminal: receiving a beacon frame broadcasted and sent by an access point; calibration information is embedded in the beacon frame, and the calibration information comprises timestamp information and a transmitting power parameter; calculating actual propagation delay of the access point and the target terminal based on the timestamp information; calculating target propagation delay of the access point and the target terminal based on the transmitting power parameter; calculating a delay error between the actual propagation delay and the target propagation delay; and calibrating the clock skew of the target terminal based on the delay error. The time, frequency and link calibration of the access point and the target terminal can be completed by using the one-way time broadcast, and the calibration precision is high.

A method includes transmitting, by an anchor wireless device, a beacon frame signal to client wireless devices, which are ambient power (AMP) devices. The beacon frame signal advertises at least a first service period during which at least a subset of the client wireless devices are to transmit. The method includes transmitting, by the anchor wireless device, during the first service period, a first wireless signal including a data packet with a command frame to activate the subset of the client wireless devices into a transmission mode. The method includes receiving, from the subset of the client wireless devices in response to detecting the command frame, second wireless signals each including a response data packet. The second wireless signals are received according to a pre-programmed schedule that deconflict transmissions by the subset of the client wireless devices.

The invention discloses a WLAN (Wireless Local Area Network) management frame transmission method and device and a WLAN, and belongs to the technical field of wireless communication. The AP sends a first operation type management frame, the frame body of the first operation type management frame comprises a first encryption field, the first encryption field is encrypted by a first key, and the first operation type management frame is a beacon frame, a detection response frame, an authentication response frame, an association response frame or a re-association response frame. According to the embodiment of the invention, the first key is preset in the AP, so that the AP can encrypt the frame body of the sent first operation type management frame by using the preset first key, thereby realizing encrypted transmission of the management frame sent by the AP before successful association between the AP and the STA, and improving the safety of WLAN communication.

This disclosure provides systems, methods, and apparatuses for wireless communication performed by a wireless communication device. An example wireless communication device includes an access point (AP) multi-link device (MLD). The AP MLD transmits a beacon frame to a wireless station (STA) MLD, the beacon frame including a plurality of AP medium access control (MAC) addresses of respective APs belonging to the AP MLD. The AP MLD receives an association request from the STA MLD, the association request including a plurality of STA MAC addresses of respective STAs belonging to the STA MLD. The AP MLD generates, during a handshake operation with the STA MLD, one or more encryption keys configured to encrypt communications between the AP MLD and the STA MLD. The AP MLD verifies the plurality of STA MAC addresses based at least in part on the one or more encryption keys.

A wireless communication method includes receiving, by a first STA, a beacon frame or a probe response frame, from a first AP. The first STA may be a type 1 STA affiliated with a non-AP multi-link device (MLD). The first AP may be a type 1 AP affiliated with an AP MLD that has zero or at least one affiliated type 2 AP. The beacon frame or the probe response frame may include a target beacon transmission time (TBTT) information field, a multi-link control field, and / or a common information field.

A non-access point (AP) multi-link device operating in a first link and a second link is disclosed. The non-AP multi-link device comprises a transmission / reception unit and a processor. The processor receives a beacon frame or a probe response frame from an AP multi-link device operating in the first link and the second link, determines a traffic identifier (TID) mapped to the first link and the second link according to TID-to-Link mapping indicated by the beacon frame or the probe response frame, and performs transmission in the first link or the second link according to the TID mapped to the first link and the second link.

A non-access point (AP) multi-link device operating in a first link and a second link is disclosed. The non-AP multi-link device comprises a transmission / reception unit and a processor. The processor receives a beacon frame or a probe response frame from an AP multi-link device operating in the first link and the second link, determines a traffic identifier (TID) mapped to the first link and the second link according to TID-to-Link mapping indicated by the beacon frame or the probe response frame, and performs transmission in the first link or the second link according to the TID mapped to the first link and the second link.

This disclosure describes systems, methods, and devices related to enhanced capability advertising. A device may send a Beacon frame or a Probe Response frame on a legacy band, including an enhanced Security Element containing one or more fields of an original robust security network element (RSNE). The device may override at least one of the one or more fields from the enhanced Security Element over corresponding fields in the original RSNE during a connection establishment process with a peer device.

This disclosure describes systems, methods, and devices related to enhanced beacon frame. A device may generate a frame comprising a multi-link element. The device may include an ultra high reliability (UHR) basic service set (BSS) parameters change count field in the multi-link element. The device may cause to send the frame to the one or more STAs.

An information transmission method and a related device, in the method, a first AP determines k second APs from m APs, the m APs include the first AP, an RSSI corresponding to each second AP in the k second APs is greater than an RSSI corresponding to a third AP, the third AP is an AP currently connected with an STA, the RSSI corresponding to the second AP is an RSSI of a signal received by the second AP from the STA, and the RSSI corresponding to the third AP is an RSSI of a signal received by the third AP from the STA. The first AP sends first information to n fourth APs, the n fourth APs are all APs which are not the first AP and not the k second APs in the m APs, and the first information is used for indicating the fourth APs to hide the SSID in the beacon frame of the broadcast. According to the mode, the success rate of switching the STA from the third AP to the second AP with a stronger network signal is improved, and the user experience is improved.

A method and a device for low power operation in a wireless LAN supporting an MLSR operation are disclosed. The method of an STA MLD comprises steps in which: a power saving operation is performed in a first link and a second link; a first STA receives a beacon frame from a first AP associated with an AP MLD while the first STA associated with the STA MLD operates in an awake state in the first link; the first STA performs first communication with the first AP in the first link on the basis of the beacon frame; and, after completion of the first communication, a second STA performs second communication with a second AP associated with the AP MLD while the second STA associated with the STA MLD operates in the awake state in the second link.