Abstract: Embodiments of the present invention provide an access method, including: sending, to an access point, a first frame that carries uplink transmission requirement information; and if a second frame that carries information about an uplink transmission resource is received from the access point within agreed time period, sending uplink multi-user transmission data to the access point, where the uplink multi-user transmission data is transmitted on the uplink transmission resource; or if the second frame is not received within an agreed time period, accessing, by a station, a channel in a contention access manner that is based on carrier sense CSMA/CA. According to the method provided in the embodiments of the present invention, a channel access manner can be managed, a congestion degree of a system can be decreased, and channel utilization can be increased.

Abstract: An image detection method includes determining, by a terminal in a skin detection mode, a to-be-detected original image in a raw format based on a to-be-detected feature, processing the to-be-detected original image according to a preset rule corresponding to the to-be-detected feature to obtain a detection-specific image, determining a normal image that is in a Joint Photographic Experts Group (JPEG) format, detecting the detection-specific image to determine a detection result image, and determining a to-be-displayed image based on the detection result image and the normal image.

Abstract: This application provides a communication method and an apparatus. The communication method includes: receiving, by user equipment, first indication information from a network device, where the first indication information indicates a first resource; determining, by the user equipment, a second resource, where the second resource and the first resource belong to a same resource set configured by the network device, and the first resource and the second resource are used to transmit a first downlink reference signal; and receiving, by the user equipment on a third resource, a second signal and/or channel transmitted by using a third antenna port, where the third antenna port has a quasi co-location QCL relationship with a second antenna port used when the first downlink reference signal is transmitted on the second resource.

Abstract: This application provides a sending device, a receiving device, an optical transmission system, and an optical power control method. The sending device includes a multiplexing unit and an optical power adjustment unit. The multiplexing unit is configured to send at least two communication optical waves to a fiber channel, and is further configured to send or receive at least two detection optical waves through the fiber channel. The optical power adjustment unit is configured to: obtain a power control instruction, where the power control instruction is generated according to power change information between the at least two detection optical waves. The optical power adjustment unit is further configured to perform optical power amplification and/or attenuation on at least one communication optical wave in the at least two communication optical waves according to the power control instruction.

Abstract: A storage array includes a plurality of hard disks, each of the hard disks is divided into a plurality of chunks, and a plurality of chunks of different hard disks form a chunk group by using a redundancy algorithm. The storage array obtains fault information of a faulty area in a first hard disk, and determines a faulty chunk storing the lost data according to the fault information. The storage array recovers the data in the faulty chunk by using another chunk in a chunk group to which the faulty chunk belongs and stores the recovered data in a recovered chunk. The recovered chunk is located in a second hard disk which is not a hard disk for forming the chunk group.

Abstract: A feeding device is disclosed. The feeding device includes a body and at least one first port, the body includes at least one first contour port, and each of the at least one first contour port corresponds to one of the at least one first port; and the first contour port includes at least two sub-ports, and the at least two sub-ports of the first contour port are connected, by using at least one power splitter, to the first port corresponding to the first contour port. In the foregoing implementation solution, the first contour port is divided into several sub-ports, and the first port and the several sub-ports are connected by using the at least one power splitter.

Abstract: An example backlight module, an example display, and an example mobile terminal are provided. The backlight module includes a backplane having a light reflecting surface, a light source layer disposed on the light reflecting surface, and at least one light mixing component disposed on the light source layer. The light source layer has at least one point light source, and the at least one light mixing component is in a one-to-one correspondence with the at least one point light source. Each light mixing component includes a light reflecting layer configured to reflect some light rays emitted by a corresponding point light source, and a light transmission layer configured to transmit a light ray reflected by the light reflecting layer and further reflected by the light reflecting surface. The light reflecting layer is disposed above the light source layer and is configured to reflect some light rays emitted by the corresponding point light source.

Abstract: A method, a device, and a computer program product, for aspect-ratio dependent filtering for intra-prediction include obtaining an aspect ratio of a block to be predicted, wherein the aspect ratio is based on a width of the block and a height of the block, and selecting an interpolation filter for the block to be predicted based on the aspect ratio of the block to be predicted.

Abstract: The present disclosure provides apparatuses and methods for splitting an image into coding units. An image is divided into coding tree units (CTUs) which are hierarchically partitioned. Hierarchical partitioning includes multi-type partitioning such as binary tree or quad tree splitting. For CTUs completely within the image and CTUs on the boundary, respective multi-type partition depths are chosen. The present disclosure provides for multi-type partitioning flexibility in a boundary portion of the image.

Abstract: Disclosed herein is a distributed battery pack power supply system, a charging control method, and a discharging control method, where a plurality of battery packs or battery groups is directly coupled in parallel or indirectly coupled in parallel as required using a charging/discharging circuit of the distributed battery pack power supply system and a corresponding control policy. A distributed battery includes a plurality of battery packs, and further includes a controller, a bidirectional voltage transformation circuit, a bypass circuit, a charging circuit, and a charging input end. Each battery pack corresponds to one bypass circuit and one bidirectional voltage transformation circuit.

Abstract: A vehicle-mounted device upgrade method and a related apparatus, where the method includes an on-board unit (Tbox) of a vehicle that processes a first data segment according to a first algorithm to obtain a first check value, where the first data segment is any data segment in a plurality of data segments included in an upgrade file of a control unit, and the first check value is sent to the control unit, and the Tbox encrypts the first data segment by using a first key to obtain a first encrypted segment, and sends the first encrypted segment to the control unit, so that the control unit stores, in the control unit, the first data segment obtained by decrypting the first encrypted segment by using the first key, where the first data segment is used by the control unit to form the upgrade file for upgrade.

Abstract: This application provides a flow control method, including: sending, by a first device, a first data packet to a second device in a first sending mode; determining, by the first device, a network congestion status; and sending, by the first device, a second data packet to the second device in the second sending mode, where the second sending mode is a sending mode determined by the first device based on the network congestion status, and the second data packet is a data packet to be sent after the first data packet.

Abstract: A data processing method includes determining whether or not it is possible to perform a new processing task within the new processing task's time limit if execution of one or more current processing tasks is continued based on the one or more current processing tasks' configurations. In case the new task's performing is determined not to be possible within the new task's time limit, resources are released from the current tasks so as to still enable performing the current tasks within their respective time limits.

Abstract: Aspects of the present application use diversity of more than one TCI state, QCL assumption, precoder and/or SRI on the network side to enable multiple transmission beams in a transmission period having multiple transmission opportunities to provide robust beam transmission from the network side. An example of transmission opportunities in a transmission period may be OFDM symbols in a slot. Aspects of the present application use diversity of more than one TCI state, QCL assumption, precoder and/or SRI at the UE to enable the UE to transmit multiple transmission beams in a configured transmission period having multiple transmission opportunities to provide robust transmission from the UEs. When using multiple transmission beams, in the event that data transmitted on one beam cannot be decoded (e.g. due to beam blockage, poor radio conditions, etc.), data transmitted on other beams can still be decoded successfully.

Abstract: In a method, a terminal device obtains at least one template source file of a first contact in different ways, and when the terminal devices obtains a face picture in a currently displayed picture through facial recognition, and determines that a first face template included in a first face information template successfully matches the face picture, the terminal device sends, based on contact information, a multimedia file to a first contact to which the first face template belongs. The multimedia file is the picture, a picture set or a video file including the picture, or a picture or a video file generated based on the picture.

Abstract: A method includes determining, by a network side device, N fixed channels. The method further includes determining, by the network side device, a first fixed channel from the N fixed channels, sending, by the network side device, a discovery reference signal on the first fixed channel, and performing data transmission on a data channel through frequency hopping. The data channel includes a channel other than the N fixed channels. N is an integer greater than or equal to 2.

Abstract: This application discloses a network handover method and a network device. The method includes: receiving, by a first access network device, first session management information from a session management network element, where the first session management information is for requesting to set up a user plane tunnel for a voice service of a terminal device; and sending, by the first access network device, a handover request to a first mobility management network element based on the first session management information and a first condition, where the handover request is for handing over the terminal device from a first network to a second network, and the first condition includes that the voice service cannot be performed in the first network. This application is applicable to the field of communication technologies.

Abstract: A flash array provided in embodiments includes a controller and a solid state disk group. The controller counts a data volume of invalid data included in each of a plurality of stripes, and select at least one target stripe from the plurality of stripes. The target stripe is a stripe that includes a maximum volume of invalid data among the plurality of stripes. Then, the controller instructs the solid state disk group to move valid data in the target stripe, and instructs the solid state disk group to delete a correspondence between a logical address of the target stripe and an actual address of the target stripe. This can reduce write amplification, thereby prolonging a life span of the solid state disk.

Abstract: The present disclosure provides systems, methods, and computer-readable media for managing graphics processing unit (GPU) allocation for a virtual machine (VM). A first GPU driver, associated with a first GPU, is offloaded from an operating system (OS) of the VM. Then, the first GPU is deallocated from the VM. A second GPU is allocated to the VM, and a second GPU driver, associated with the second GPU, is loaded in the OS of the VM. To restore a GPU context from the first GPU within the second GPU, a GPU command log from the first GPU is replayed to the second GPU.

Abstract: This application discloses a container access method and apparatus. The method includes: receiving a container access request, which is used to request to access a target container; selecting a driver instance corresponding to the target container from multiple currently-running driver instances, where different driver instances in the multiple driver instances are used to drive different types of containers, and the multiple driver instances are managed by using a same program; and sending the container access request to the selected driver instance. In this solution, one program manages driver instances that are used to drive different types of containers, so that a user can access multiple containers of different types by using one program. This reduces running overheads of a program that manages multiple driver instances in a container engine.