Abstract: Embodiments of the present disclosure provide a physical layer protocol data unit PPDU transmission method and a corresponding PPDU transmission apparatus. Application of the method and apparatus in the embodiments of the present disclosure enables a receive end to quickly determine the starting position of the feature signal sequence by means of blind detection, and ensures that the receive end quickly completes data processing and status switching.

Abstract: Embodiments of the present invention disclose a data processing method and apparatus, and belong to the field of communications technologies. The method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a preamble field, a data field, and a middle preamble field, and the preamble in the PPDU includes information used to indicate an insertion frequency of the middle preamble in the data field in the PPDU; and sending the PPDU. The insertion frequency of the middle preamble in the data field is indicated by using a specified field in the preamble. In this way, in different scenarios, the middle preamble may be inserted into the data field at different frequency, thereby reducing overheads of an inserted pilot and improving data transmission performance.

Abstract: Embodiments of this application provide an information indication method, a device, and a system, to reduce pilot overheads caused by a reference signal. The method includes: determining, by a base station, that a port used to transmit a first reference signal and a port used to transmit a second reference signal are multiplexed; sending, by the base station, the first reference signal and/or the second reference signal on a multiplexed port; and generating, by the base station, information indicating multiplexing of the port, and sending the information indicating multiplexing.

Abstract: A method for transmitting channel state information includes: sending a feedback indication message, a high-efficiency long training sequence, and a resource scheduling message, wherein the feedback indication message is used to indicate more than one target STAs that need to feed back channel state information, the high-efficiency long training sequence is used for determining the channel state information by the target STAs, and the first resource scheduling message is used to indicate a communication resource used by the target STAs when the target STAs feed back the channel state information; and receiving the channel state information sent by the target STAs by using the communication resource.

Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting channel state information. The method includes: sending a feedback indication message, a high-efficiency long training sequence, and a resource scheduling message, wherein the feedback indication message is used to indicate more than one target STAs that need to feed back channel state information, the high-efficiency long training sequence is used for determining the channel state information by the target STAs, and the first resource scheduling message is used to indicate a communication resource used by the target STAs when the target STAs feed back the channel state information; receiving the channel state information sent by the target STAs by using the communication resource.

Abstract: A method includes: generating a physical layer packet of a first protocol version of a wireless local area network, where a first signaling field includes at least two OFDM symbols, the first two OFDM symbols of the first signaling field each comprises five signal segments, and duration of each signal segment is 0.8 microseconds; and five signal segments of a first OFDM symbol are respectively a fourth signal segment, a first signal segment, a second signal segment, a third signal segment, and the fourth signal segment in sequence, and five signal segments of a second OFDM symbol are respectively the first signal segment, the second signal segment, the third signal segment, the fourth signal segment, and the first signal segment in sequence; and sending the physical layer packet to a receive end device, so that the receive end device performs recognition.

Abstract: This application discloses a data packet transmission method, a receiving device, and a sending device. The method includes: receiving, by a receiving device, a data packet, where the data packet includes at least one pair of a delimiter and an information element; the delimiter is used to separate two adjacent information elements; the delimiter includes a cyclic redundancy code field and an information element type field; in each pair of a delimiter and an information element, the information element type field is used to indicate a type of the information element; and one type of information element is uniquely corresponding to one information element length; and parsing, by the receiving device, the information element based on the cyclic redundancy code field and the information element type field.

Abstract: Systems, apparatuses and methods for harvesting ambient energy involve an electrically conductive charge-carrying movable electrode. An apparatus includes an electrically conductive charge-carrying electrode, a first dielectric interface region, a second dielectric interface region, and at least one reference electrode. The first and second dielectric interface regions differ in surface charge density. In certain aspects, the movable electrode moves proximate and relative to the first and second dielectric interface regions in response to receipt of ambient energy, thereby providing first and second capacitances. The first capacitance differs from the second capacitance, and/or the first surface charge density differs from the second surface charge density. Movement of the movable electrode in combination with the differing capacitances and/or charge densities results in energy accumulation, thereby enabling ambient energy to be harvested efficiently and effectively.

Abstract: The disclosure relates to an information indication method, an information receiving method, and an apparatus. The information indication method includes: sending, by an access point, a data frame to at least one station, where the data frame is a non-aggregated frame or an aggregated frame obtained by aggregating N MAC frames, N is a positive integer greater than 1 and is less than or equal to M, and M is a maximum allowable quantity of aggregated MAC frames; sending, by the access point, trigger information to the at least one station, where the trigger information is used to instruct the at least one station to reply with an acknowledgement frame on a shared resource unit; and receiving, by the access point, the acknowledgement frame fed back by the at least one station on the shared resource unit.

Abstract: Apparatuses and methods for harvesting ambient energy involve repeated circuit reconfiguration. An apparatus includes a primary charge storage device, a first secondary charge storage device, a second secondary charge storage device, and switching circuitry. The switching circuitry is configured to cyclically alter connection of the first and second secondary charge storage devices between a series state and a parallel state. First and second moveable electrically conductive elements may include electrically conductive liquid droplets of materials such as water or mercury. At least one of the primary storage device, the first secondary charge storage device, or the second secondary charge storage device includes a capacitance that varies in response to receipt of ambient energy. Concurrently altering relative capacitance and circuit configuration results in exponential growth of harvested energy.

Abstract: The present disclosure relates to communication methods, apparatus, and systems. One example method includes sending, by an access point, a first beacon frame, where the first beacon frame is used to schedule a first-type station set, a target wake time (TWT) information element in the first beacon frame includes first indication information, and the first indication information is used to indicate to the first-type station set that a first TWT service period is provided to a second-type station set for use, and sending, by the access point, a second indication frame in the first TWT service period, where the second indication frame is used to schedule the second-type station set, and a bandwidth specification of a physical packet carrying a beacon frame for scheduling the first-type station set is different from a bandwidth specification of a physical packet carrying an indication frame for scheduling the second-type station set.

Abstract: This application relates to the wireless communications field and provides a frame transmission method, device, and system. The method includes: sending, by a second device, n wake-up frames to a first device, where the n wake-up frames each carry segmented content of wake-up signaling, so that a wake-up receiver of the first device wakes up a main transceiver of the first device based on the n wake-up frames, and after being woken up, the main transceiver sends, to the second device, a response frame used to indicate whether the n wake-up frames are correctly received. In this application, content of the wake-up signaling is segmented. In this case, lengths of the n wake-up frames are all relatively short, so that the wake-up receiver is easier to correctly receive each wake-up frame.

Abstract: A first station generates indication information of any one of an operating channel, an operating band, or an operating channel and an operating band of a wake-up receiver in a second station. The first station sends the indication information, so that the wake-up receiver in the second station works on the indicated operating channel or the indicated operating band. The first station controls the operating channel or the operating band of the wake-up receiver in the second station by generating the indication information.

Abstract: An access point generates a beacon frame that carries a trigger frame information element comprising sending information of a trigger frame for indicating a sending period of the trigger frame; and sends the beacon frame. In this case, the station switches to an active state, and receives the trigger frame by listening to the channel, and the station performs uplink transmission according to indication of the trigger frame after receiving the trigger frame. In this way, when signaling overheads are not increased and reliability is ensured, a station can learn of a sending time of a trigger frame, and the station remains in a receiving state in an appropriate period of time.

Abstract: An access device constructs a beacon frame, where the beacon frame includes a newly added field, and the newly added field represents multiple data guard interval lengths supported by the access device. The access device broadcasts the beacon frame, so that a terminal selects an available guard interval length matching a data guard interval length supported by the terminal from the beacon frame, and performs data communication with the access device by using the available guard interval length. Data communication between the access device and the terminal can be implemented when the access device supports multiple data guard interval lengths.

Abstract: A Kernel-power-density based method for wireless channel multipath components (MPCs) clustering. Signals get to the receiver from a transmitter via multipath propagation. MIMO channels can be modeled as double-directional, which contains the information of power, delay, direction of departure (DOD) and direction of arrival (DOA) of MPCs. The MPCs tend to appear in clusters. All the parameters of MPCs can be estimated by using high-resolution algorithms, such as MUSIC, CLEAN, SAGE, and RiMAX. Considering a data snapshot for a certain time with several clusters, which include a number of MPCs, where each MPC is represented by its power, delay, DOD and DOA. This invention adopts a novel clustering framework by using a density based method, which can better identify the local density variations of MPCs and requires no prior knowledge about clusters. It can work for the cluster oriented channel processing technology in future wireless communication field.

Abstract: A playlist server application is provided on a server at a first network node. A playlist local application is provided for a remote device. An indication of a change to a playlist on one of the server and the remote device is obtained from a corresponding one of the playlist server application and the playlist local application. The change is synchronized to another one of the server and the remote device.

Abstract: A method for sending a wireless local area network packet structure is provided, and the method comprises: determining a packet structure, where the packet structure comprises an HE-SIGA and an HE-SIGB, the HE-SIGA comprises an indication information, and if a current transmission mode is a full bandwidth MU-MIMO transmission, the indication information is used to indicate a number of scheduled users, or if the current transmission mode is other transmission mode, the indication information is used to indicate a number of symbols in the HE-SIGB; and sending the packet structure.

Abstract: A method for sending a wireless local area network packet structure is provided, and the method comprises: determining a packet structure, where the packet structure comprises an HE-SIGA and an HE-SIGB, the HE-SIGA comprises an indication information, and if a current transmission mode is a full bandwidth MU-MIMO transmission, the indication information is used to indicate a number of scheduled users, or if the current transmission mode is other transmission mode, the indication information is used to indicate a number of symbols in the HE-SIGB; and sending the packet structure.

Abstract: The present invention relates to pharmaceutical compositions and a method of inhibiting metastasis using anti-ROR1 antibodies or antigen binding fragments, ROR1 binding peptides and ROR1 vaccines.