Abstract: The present application relates to the technical field of computers, and discloses a communication monitoring method, apparatus and system. One specific embodiment of the method includes: obtaining, in response to establishment of a communication connection between two communication nodes, traffic data related to the communication connection; extracting node feature information from the traffic data; evaluating a comprehensive score of the communication connection based on the node feature information and a preset evaluation strategy matched with the communication connection; and determining whether the comprehensive score meets a preset communication security condition matched with the communication connection: if yes, determining that the communication connection is secure; otherwise, determining that the communication connection is risky. The embodiment can effectively improve the accuracy of a monitoring result, thereby effectively improving the communication security.

Abstract: This application provides a communication method and an apparatus, to implement a channel sensing procedure between different apparatuses while meeting a communication requirement, thereby improving communication efficiency of a WLAN system and reducing overheads. In the method, a first apparatus sends a first frame to a second apparatus, where the first frame is used to request channel sensing; and the first apparatus receives a second frame from the second apparatus, where the second frame includes channel sensing information between the first apparatus and the second apparatus, the channel sensing information is determined based on a part of or all of n PPDUs, the n PPDUs are PPDUs sent by the first apparatus, and n is greater than or equal to 1.

Abstract: A method of generating an image sample, which relates to a field of an artificial intelligence technology, in particular to fields of a deep learning technology and a computer vision technology. The method includes: generating a handwritten text image according to at least one handwritten sample image; and generating a target sample image with an annotation box according to the handwritten text image and a background image, where the annotation box is used to represent a region in which the handwritten text image is located in the background image. The present disclosure further provides a method of recognizing a text, an electronic device and a storage medium.

Abstract: This application provides a sensing method, an apparatus, and a system, to enable a plurality of measurement setups to share one measurement instance, to improve measurement efficiency. The method includes: A first device generates and sends first indication information, where the first indication information indicates that a first measurement setup and a second measurement setup share a first measurement instance. Correspondingly, a second device receives and parses the first indication information, to learn that the first measurement setup and the second measurement setup share the first measurement instance.

Abstract: A communication method includes: A first device receives a plurality of NDPs from a second device, where one of the plurality of NDPs corresponds to one piece of CSI; and when a first condition is met, the first device sends first information to a third device, where the first information indicates that a CSI change degree exceeds a first threshold; and the first condition includes any one of the following: a first CSI change degree in a plurality of CSI change degrees of the first device exceeds the first threshold, and a ratio of a quantity of CSI change degrees that exceed the first threshold in the plurality of CSI change degrees to the plurality of CSI change degrees is greater than a second threshold, where the plurality of CSI change degrees are determined based on pieces of CSI corresponding to the plurality of NDPs.

Abstract: The present disclosure relates to precoding matrix determining methods, devices, and systems. In one example method, a receive end device obtains channel state information (CSI) of a first channel and information about P antenna port groups of a transmit end device. The receive end device determines V orbital angular momentum (OAM) mode groups based on the CSI of the first channel and first OAM modes, determines a first precoding matrix based on the P antenna port groups of the transmit end device and the V OAM mode groups, and sends, to the transmit end device, first indication information indicating the first precoding matrix. The transmit end device receives the first indication information, and determines the first precoding matrix based on the first indication information.

Abstract: This application provides a feedback indication method and apparatus, to more comprehensively indicate a feedback, so as to improve applicability of a sensing technology in a scenario of a plurality of devices and a plurality of interactions. The method and the apparatus may be applied to a communication system. The method includes: A first device generates a first frame, and sends the first frame. The first frame includes first information, and the first information indicates a feedback type of a first feedback and/or a feedback type of a second feedback. The first feedback and the second feedback are feedbacks at different levels.

Abstract: This application relates to communication methods and apparatuses. In an example method, a first communication apparatus generates first indication information, and sends the first indication information to a second communication apparatus. The first indication information indicates M orbital angular momentum (OAM) modes jointly supported by the first communication apparatus and the second communication apparatus, where there is a correspondence between N OAM modes in the M OAM modes and a demodulation reference signal (DMRS) port.

Abstract: The present disclosure relates to feedback methods and apparatuses. In one example method, a first communication apparatus may receive first information. The first information includes at least one of channel state information (CSI) measurement quantity indication information for channel variation calculation, a CSI type and a rule that are for the channel variation calculation, or a feedback suggestion parameter. The feedback suggestion parameter indicates a suggested feedback form. The first information is used to select a second communication apparatus. The first communication apparatus may determine, based on the first information, whether to trigger the second communication apparatus/apparatuses to send a feedback result. Correspondingly, the first communication apparatus receives the feedback result.

Abstract: An antenna includes: a dielectric plate provided with a first surface and a second surface; a ground plane located on the first surface; and an antenna unit. A size of the antenna unit is a preset length, the antenna unit includes at least three antenna elements in a ring arrangement, and each antenna element includes a first patch, a second patch, and a third patch that are located on the second surface, and three conductive portions that penetrate through the first surface and the second surface.

Abstract: A method includes sending a first orbital angular momentum (OAM) reference signal in a first beam direction. The first OAM reference signal is used to determine a second beam direction from the first beam direction. The method also includes receiving first indication information. The first indication information includes information about the second beam direction. The method also includes sending a second OAM reference signal in the second beam direction. The second OAM reference signal is used to determine antenna information and a second channel response of the second OAM reference signal. The method also includes receiving second indication information. The second indication information is determined based on the second channel response and the antenna information. The second indication information is used to determine a transmission manner. The transmission manner includes OAM wave transmission, plane wave transmission, or joint transmission of OAM and a plane wave.

Abstract: A radio resource identification method and an apparatus. The method includes: obtaining OAM mode domain information, where the OAM mode domain information includes a first OAM mode domain identifier, the first OAM mode domain identifier corresponds to a first transmission parameter of a vortex electromagnetic wave in a first OAM physical mode, or the first OAM mode domain identifier corresponds to a first ratio between the first transmission parameter and a reference value, and the reference value includes a transmission parameter of a plane electromagnetic wave or a transmission parameter of a vortex electromagnetic wave in a specified OAM physical mode in a plurality of OAM physical modes; and any plurality of waveform symbols pass through a same vortex electromagnetic wave channel; and determining a radio resource used for uplink transmission or downlink transmission.

Abstract: A magnetic vascular anastomosis device for rapid liver transplantation includes a magnetic ring assembly and a base member assembly. The magnetic ring assembly includes an O-shaped magnetic ring and a C-shaped magnetic ring coupled at a donor liver blood vessel and a receptor liver blood vessel respectively. The base member assembly includes an O-shaped base member and a C-shaped base member. The base member is categorized into a slotted base member, a columned base member, and a hooked base member for different surgical suture methods. The magnetic vascular anastomosis device incorporates with the magnetic attraction between magnetic rings, such that the entire liver transplantation vascular anastomosis process is fast, safe, and reliable. The vascular anastomosis device is able apply for different operations involving vascular anastomosis such as kidney transplantation, lung transplantation, heart transplantation, and maxillofacial surgery.

Abstract: The present disclosure relates to precoding matrix determining methods, devices, and systems. In one example method, a receive end device obtains channel state information (CSI) of a first channel and information about P antenna port groups of a transmit end device. The receive end device determines V orbital angular momentum (OAM) mode groups based on the CSI of the first channel and first OAM modes, determines a first precoding matrix based on the P antenna port groups of the transmit end device and the V OAM mode groups, and sends, to the transmit end device, first indication information indicating the first precoding matrix. The transmit end device receives the first indication information, and determines the first precoding matrix based on the first indication information.

Abstract: Disclosed is a magnetic compression anastomosis system for laparoscopic cholangioenterostomy, including an emission gun, daughter and parent magnetic rings, and an assisting rod, wherein the parent magnetic ring is positioned at the stump of a common bile duct in a purse string suture manner, the relative position is fixed by the assisting rod, the emission gun is loaded with the daughter magnetic ring and makes the same in butt joint with the parent magnetic ring by an intestinal cavity channel of an intestinal tube, the distance between the daughter magnetic ring and the parent magnetic ring is continuously shortened by a push rotary button of the emission gun, and when the relative distance between the daughter and the parent magnetic rings is shortest and mutual attraction is realized, separating the daughter magnetic ring from the emission gun is achieved by an activation mechanism of the emission gun, realizing laparoscopic cholangioenterostomy.

Abstract: Embodiments of the present disclosure disclose a method and apparatus for service hosting of a distributed storage system.

Abstract: A magnetic vascular anastomosis device for rapid liver transplantation includes a magnetic ring assembly and a base member assembly. The magnetic ring assembly includes an O-shaped magnetic ring and a C-shaped magnetic ring coupled at a donor liver blood vessel and a receptor liver blood vessel respectively. The base member assembly includes an O-shaped base member and a C-shaped base member. The base member is categorized into a slotted base member, a columned base member, and a hooked base member for different surgical suture methods. The magnetic vascular anastomosis device incorporates with the magnetic attraction between magnetic rings, such that the entire liver transplantation vascular anastomosis process is fast, safe, and reliable. The vascular anastomosis device is able apply for different operations involving vascular anastomosis such as kidney transplantation, lung transplantation, heart transplantation, and maxillofacial surgery.

Abstract: A method for decoding multiple descriptions for a media stream includes decoding at least one of a first description and a second description from the media bitstream, wherein the first description and the second description are associated with a current sample of the media bitstream and independently decodable; based on a determination that the second description is missing, reconstructing, by a decoder, the current sample by performing a third shifting operation on the first description, wherein the third shifting operation on the first description comprises left shifting the first description by one bit; and based on a determination that both the first description and the second description have been received, reconstructing, by the decoder, the current sample by summing the first description and the second description. An encoding method is also provided.

Abstract: A method for decoding multiple descriptions for a media stream includes decoding at least one of a first description and a second description from the media bitstream, wherein the first description and the second description are associated with a current sample of the media bitstream and independently decodable; based on a determination that the second description is missing, reconstructing, by a decoder, the current sample by performing a third shifting operation on the first description, wherein the third shifting operation on the first description comprises left shifting the first description by one bit; and based on a determination that both the first description and the second description have been received, reconstructing, by the decoder, the current sample by summing the first description and the second description. An encoding method is also provided.

Abstract: Embodiments of the present disclosure disclose a method and apparatus for service hosting of a distributed storage system.