Abstract: A crystal oscillating wafer is a sheet in a symmetric shape. A symmetry axis of the crystal oscillating wafer has at least a first point and a second point. A distance between the first point and a first endpoint on the symmetry axis is less than a distance between the second point and the first endpoint. A width that is of the crystal oscillating wafer and that passes the first point in a first direction is greater than a width that is of the crystal oscillating wafer and that passes the second point in the first direction. The first direction is a direction perpendicular to the symmetry axis on a surface of the crystal oscillating wafer. The crystal oscillating wafer includes an oscillation region including a first concave region located on an upper surface and a second concave region located on a lower surface of the crystal oscillating wafer.

Abstract: This application provides a communication method and apparatus, so that sensing can be performed in a cooperative sensing mode, to improve sensing accuracy. The method and the apparatus may be applied to a 4G system, a 5G system, and a future communication system, for example, a 6G system. The method includes: determining that a first sensing service uses cooperative sensing, and sending a first request message to a second sensing network element. The first request message is used to request the second sensing network element to perform sensing, the first request message includes first sensing mode information, and the first sensing mode information indicates the cooperative sensing.

Abstract: This application provides a cell reselection method and an apparatus. The method includes: A terminal device sends a radio resource control RRC setup request message to a first radio access network device a plurality of times. The terminal device receives a response message for the RRC setup request message within a preset time. The terminal device determines, based on a first preset threshold and a quantity of consecutive times that the response message is not received, whether to perform cell reselection, or the terminal device determines, based on a third preset threshold and a quantity of times that the RRC setup request message is sent or a quantity of times that the response message for the RRC setup request message is received, whether to trigger a cell reselection mechanism.

Abstract: Embodiments of the present invention disclose a communication method, apparatus, and system. The method includes: obtaining first information, where the first information includes information about a first cell; and sending the first information to a terminal device via a second cell, where the first cell is in a sleep state, the first cell corresponds to a first access network device, the second cell corresponds to a second access network device, and the information about the first cell indicates the terminal device to send a wake-up signal for waking up the first cell.

Abstract: Embodiments of this application disclose a picture reconstruction method and apparatus for a video picture. The picture reconstruction method includes: obtaining a prediction mode of a current coding unit, and/or obtaining a prediction partition mode of the current coding unit, where the current coding unit includes a luma coding block and a chroma coding block, and the prediction partition mode is a mode of splitting the current coding unit into prediction blocks or prediction units; obtaining a transform block of the current coding unit based on the prediction partition mode and/or the prediction mode; and generating a reconstructed picture block of the current coding unit based on the transform block. According to the method in the embodiments of this application, video coding efficiency can be improved.

Abstract: A health management method, a system, and an electronic device are provided. In this method, user data is used to help a user assess health risk factors currently exposed, assess overall health risk factors of the user, provide a personalized comprehensive intervention plan for controllable risk factors closely related to individual health, and predict health benefits of the intervention plan. After a phase of the intervention plan is implemented, an intervention effect assessment result may be further provided, and a next phase of the intervention plan can be adjusted, to promote development of a healthy life of the user and achievement of an active health management objective.

Abstract: This application discloses a communication method and apparatus. The method includes: A terminal sends indication information to an access network device, where the indication information indicates at least one of the following: positioning, a terminal type, or signaling transmission; and the terminal receives an RRC message from the access network device, where the RRC message is used for configuring an SRB2 for the terminal and not configuring a DRB. If the indication information indicates positioning, the indication information includes positioning, positioning-signaling, a positioning service, positioning service signaling, or the like.

Abstract: An access network device receives M pieces of first information of M local models from M terminal devices, where the M terminal devices one-to-one correspond to the M local models, the M local models one-to-one correspond to the M pieces of first information, and the M pieces of first information of the M local models are information received in first duration. The access network device updates a global model based on the M pieces of first information of the M local models and sends first information of the global model to K terminal devices. In the method, the first duration is set, to ensure that an update progress of local information matches an update progress of the global model and improve accuracy and performance of the global model obtained by the access network device.

Abstract: This application provides a communication method and a communication apparatus. The method includes: predefining at least two reference signal sets, where minimum cyclic shift intervals respectively corresponding to the at least two reference signal sets are different from each other, the at least two reference signal sets occupy a same time-frequency resource, and code division orthogonality is performed between different reference signals in a same reference signal set.

Abstract: A communication method to reduce a communication latency. The method includes: a terminal obtains a mapping relationship, where the mapping relationship includes a mapping relationship between M parameter sets and M time periods, the parameter set includes a value of at least one parameter, and M is an integer greater than or equal to 2. The terminal receives first control information in a first time period based on the mapping relationship, where the first time period is included in the M time periods.

Abstract: This application provides a UE sensing method and a communication apparatus. An SF network element, an NEF network element, an AMF network element, an SMF network element, a RAN network element, or the like may perform sensing detection on UE for a sensing requester or the UE, and provide a corresponding sensing service for the sensing requester or the UE. In some implementations, the sensing requester may be the UE, or may be an application function AF. Usually, the AF may directly request the sensing service from a communication system (for example, a 5GS), and the UE may request the sensing service from a communication system (for example, a 5GS), may perform sensing by directly requesting a sensing resource from the RAN network element based on a sensing requirement of the UE, or may perform sensing in collaboration with the RAN network element, and obtain sensing data, so that the sensing data can be quickly and efficiently obtained.

Abstract: This application provides a service data transmission method and a communication apparatus. The method includes: An application server obtains first information of a multicast broadcast service session; and the application server sends data of a service over the multicast broadcast service session based on the first information. In the foregoing technical solution, the application server may determine, based on related information (for example, information of a terminal in the multicast broadcast service session, or information of the multicast broadcast service session) of the multicast broadcast service session, that the data of the service can be transmitted over the multicast broadcast service session. In this way, the data of the service can be transmitted flexibly over the multicast broadcast service session.

Abstract: A data transmission method includes: generating a first data packet, where a signaling field in the first data packet includes bandwidth information and space-time stream information, the bandwidth information is used to indicate first bandwidth, and the space-time stream information is used to indicate k first space-time stream quantities corresponding to k receive ends, where k?1; and sending the first data packet to the k receive ends, where a maximum value of the first bandwidth is greater than 160 MHz, and/or the k first space-time stream quantities meet a preset condition, where the preset condition includes: when k=1, a maximum value of the first space-time stream quantity indicated by the space-time stream information is greater than 8, and when k>1, a maximum value of a sum of the k first space-time stream quantities is greater than 8.

Abstract: Embodiments of the present invention provide several long training sequences that are in a wireless local area network and that comply with 802.11ax.

Abstract: A method includes: receiving, by an intent management device, a service intent from a requirement device, where the service intent is used to indicate service requirement information, and the service requirement information includes service access time information of at least one terminal device and service access location information of the at least one terminal device; and determining network configuration information based on the service intent, and configuring a network based on the network configuration information; or determining first information based on the service intent, and sending the first information to a network management device, where the first information includes network configuration information or network intent information, the network configuration information is used to indicate a radio resource configuration, and the network intent information is used to describe an effect of a network configuration.

Abstract: A gallium nitride component includes a gallium nitride layer, a barrier layer on a surface of a side of the gallium nitride layer, and a gate on a side that is of the barrier layer and that is away from the gallium nitride layer. The gallium nitride layer has a gate region and a non-gate region outside the gate region. The barrier layer is located in the gate region and the non-gate region. A size of the barrier layer located in the gate region is greater than a size of the barrier layer located in the non-gate region, and aluminum concentration on a side that is of the barrier layer located in the gate region and that faces the gallium nitride layer is greater than aluminum concentration on a side that is of the barrier layer located in the gate region and that faces the gate.

Abstract: A terminal device receives first indication information, where the first indication information indicates the first configuration information of a first signal, and the first configuration information at least includes information about a first resource and a first antenna port number. The terminal device receives the first signal on the first resource and receives a second signal on a second resource, where a second antenna port number corresponding to the second signal is different from the first antenna port number, and the first resource and the second resource overlap. The terminal device determines information in the second signal based on the first signal. In a possible design, the terminal device may determine, based on the first configuration information sent by a network device, a signal sequence carried by the first signal.

Abstract: This application discloses a program compilation method including: obtaining a first program, where the first program includes a plurality of layers of loop statements, a loop condition of each layer of loop statement in the plurality of layers of loop statements includes a variable and a value interval of the variable, and a loop body of the plurality of layers of loop statements includes at least one conditional statement; processing a value interval of a first variable in a first loop statement included in the plurality of layers of loop statements, to obtain a second loop statement; and compiling the first program based on at least one loop statement to obtain a compilation result of the first program.

Abstract: A recommendation device obtains to-be-predicted data and a plurality of target reference samples based on a similarity between the to-be-predicted data and the plurality of reference samples. Each reference sample and the to-be-predicted data each include user feature field data indicating a feature of a target user, and item feature field data indicating a feature of a target item. Each target reference sample and the to-be-predicted data have partially identical user feature field data and/or item feature field data. The recommendation device obtains target feature information of the to-be-predicted data based on the plurality of target reference samples and the to-be-predicted data. The recommendation device then uses the target feature information as input to a deep neural network to obtain a target item that is to be recommended.

Abstract: A folding apparatus includes a principal axis, a first bracket and a second bracket that are located on two sides of a principal axis along a width direction. A first connecting rod and a second connecting rod are located on two sides of the principal axis along the width direction, and a first swing arm and a second swing arm are located on two sides of the principal axis along the width direction. A first support plate and a second support plate are located on two sides of the principal axis along the width direction. When the first bracket and the second bracket rotate to be positioned face-to-face, and a length of accommodating space of the folding apparatus that accommodates a folded part of a flexible display can be extended.