Abstract: This application relates to the field of communication technologies, and provides a communication method and apparatus, to improve transmission performance of a communication network. In the method, a first QoS flow corresponding to a plurality of QoS parameter sets is provided. In a transmission process, a terminal device, an access network device, and a UPF may adjust, based on a change of a service requirement of a target service, a QoS parameter set corresponding to the first QoS, and transmit a service of target data based on the QoS parameter set.

Abstract: A service data flow transmission method, a communication apparatus, and a communication system. The method includes: a user plane network element receives characteristic information of a service data flow and QoS information of the service data flow, where the characteristic information of the service data flow indicates traffic characteristic information corresponding to different time slices of the service data flow in a time period, and the QoS information indicates QCIs corresponding to the different time slices; determines, based on the characteristic information of the service data flow, a first time slice corresponding to a data packet of the service data flow; and sends the data packet to an access network device based on the first time slice corresponding to the data packet of the service data flow and a QCI corresponding to the first time slice.

Abstract: A communication method and apparatus, a computer-readable storage medium, and a computer program product are provided. The method is used by a first network device to send, to a second network device, a request message for conditional handover, and receive, from the second network device, a response message for conditional handover. The response message includes indication information, and the indication information indicates at least one energy saving mode of a candidate cell of the second network device and at least one piece of configuration information associated with the at least one energy saving mode for conditional handover. In this way, network energy saving triggered conditional handover is implemented, and energy utilization efficiency is improved.

Abstract: the first information indicates a cell DTX state of a serving cell of the terminal device, and the C-DRX-related timer is configured to determine whether the terminal device enters a C-DRX active period (S901); and when the first information indicates that the DTX state of the serving cell is an inactive period state, performing a first operation, where the first operation indicates the terminal device to enter a C-DRX sleep period or is used to change the running state of the C-DRX-related timer (S902). The cell DTX state is taken into consideration for whether the terminal device enters the C-DRX sleep period, thereby avoiding an invalid monitoring of a PDCCH performed by the terminal device when the cell DTX state is the inactive period state.

Abstract: This disclosure relates to a wireless communication method, a network device, a communication system, a computer-readable storage medium, a chip, and a computer program product. According to an example of the wireless communication method, a first network device obtains first information of a terminal device. The first information indicates at least one synchronization signal block used to page the terminal device. The first network device transmits, to a second network device, a paging message used to page the terminal device. The paging message includes the first information.

Abstract: A terminal device receives indication information from a network device, where the indication information is associated with a first cell. The terminal device performs cell selection, reselection, or access based on the indication information.

Abstract: A network device sends first configuration information to a terminal device, where the first configuration information indicates the terminal device to perform cell global identifier CGI measurement, the first configuration information includes an identifier of a first cell and first indication information, and the first indication information indicates the terminal device to measure, in a second cell and/or on a first carrier, CGI information of the first cell. The network device receives a first CGI measurement result from the terminal device, where the first CGI measurement result includes the CGI information of the first cell or information indicating that the CGI information of the first cell fails to be obtained through measurement.

Abstract: A communication method and apparatus are provided. The method includes: A first network device determines first information, where the first information indicates first beam configuration information, and the first beam configuration information includes identifier information of a first beam and periodicity information of the first beam. The first network device sends the first information to a terminal device by using downlink control information DCI and/or a media access control MAC control element CE.

Abstract: A communication method and apparatus are provided. In the communication method, a network device indicates an SSB resource configuration to a terminal device, and provides a plurality of different SSB resource configuration manners, thereby improving resource configuration flexibility, and increasing a shutdown opportunity of the network device. Therefore, energy consumption of the network device can be reduced.

Abstract: A first access network device sends, to a terminal device, an application layer measurement configuration used to indicate the terminal device to perform quality of experience measurement and collection on a first service. The application layer measurement configuration includes a type of the first service and an indicator of quality of experience of the first service. The type of the first service includes one or more of AR, VR, and 5GMS. The first access network device receives an application layer measurement report from the terminal device. The application layer measurement report includes the type of the first service and a value corresponding to the indicator of quality of experience of the first service.

Abstract: This application discloses a communication method and apparatus. The method includes: A first network device generates common system information. The common system information includes a plurality of information elements, the plurality of information elements include a first information element and a second information element, the first information element includes values of a plurality of parameters in system information of a first cell, and the second information element includes a value of a first parameter in system information of a second cell. A value of a second parameter in the system information of the second cell is the same as a value of a second parameter in the system information of the first cell, and the first parameter and the second parameter constitute the plurality of parameters.

Abstract: Provided is a method for detecting abnormal working conditions of multi-view data based on feature regression. By the method, data capable of being acquired in a production process is collected together, a big data pool is established, and historical data information is fully utilized; by analyzing the data in the data pool, the method for detecting abnormal working conditions based on the multi-view data is established by a feature regression method, and a general mathematical model is established for preprocessed data acquired by different sensors; left and right projection vectors solved through the model can make similar sample points have better clustering effects in a low dimensional space; and by comparing a correlation between vectors after dimensionality reduction and various category vectors, production working conditions at a current time can be recognized.

Abstract: A first access network device sends, to a terminal device, an application layer measurement configuration used to indicate the terminal device to perform quality of experience measurement and collection on a first service. The application layer measurement configuration includes a type of the first service and an indicator of quality of experience of the first service. The type of the first service includes one or more of Augmented Reality (AR), Virtual Reality (VR), and 5th Generation Media Streaming (5GMS). The first access network device receives an application layer measurement report from the terminal device. The application layer measurement report includes the type of the first service and a value corresponding to the indicator of quality of experience of the first service.

Abstract: A first network device generates system information, where the system information includes a first indication, the first indication indicates periodicities of a plurality of groups of downlink common signals from the first network device, and all groups of the plurality of groups of downlink common signals have different periodicities. The first network device broadcasts the system information. The method further includes: A terminal device receives the system information from the first network device. The terminal device determines the periodicities of the plurality of groups of downlink common signals from the first network device based on the first indication.

Abstract: This application provides an access network device selection method and an apparatus. In the method, the terminal device may indicate, to a DNS through one or more of first indication information, second indication information, and at least one GIN, whether the terminal device needs to support external authentication. Therefore, when selecting the non-3GPP access network device for the terminal device, the DNS may consider one or more of the first indication information, the second indication information, and the at least one GIN, to select the proper non-3GPP access network device for the terminal device based on the indication of the terminal device. For example, when the terminal device supports external authentication or needs to support external authentication, the DNS may select, for the terminal device, a non-3GPP access network device capable of performing external authentication.

Abstract: There is provided an alignment method of a human body part to be X-rayed based on photogrammetry. Preset positioning information of the target body part is input. An RGB camera and a depth camera capture natural images of the target body part. The spatial attitude deviation of the target body part is established relative to the spatial coordinate system where the X-ray machine tube is located. The present invention feeds back the difference between the patient's current posture and the theoretical best shooting posture to the medical staff in real time. The medical staff may instruct the patient to adjust the current position and posture, so that the patient's target position can be quickly adjusted to the theoretical optimal position range, providing a high-quality X-ray image in one shot, and the problem of low X-ray image quality caused by posture and distance problems can be eliminated.

Abstract: The technology of this application relates to a terminal device configured to receive a first message from a first access network device, where the first message is used by the terminal device to obtain a timing advance (TA) of the terminal device in a target cell, and the target cell is not a cell currently accessed by the terminal device. The terminal device is configured to send a second message to the first access network device, where the second message indicates that the terminal device has completed configuration of the target cell. In embodiments of this application, the terminal device is configured to receive the first message from the first access network device.

Abstract: A cell selection method, including receiving a broadcast message, where the broadcast message includes indication information, the indication information indicates to camp on a first capacity component carrier (CCC) cell, the first CCC cell is a CCC cell associated with a BCC cell, and the BCC cell is a BCC cell that is found by a terminal device and that satisfies a cell selection criterion, and determining, based on the indication information and the cell selection criterion, whether to camp on the first CCC cell. The indication information indicates the to terminal device to select an appropriate cell to camp on.

Abstract: The present disclosure discloses example communication methods and apparatuses. One example method includes obtaining physical random access channel (PRACH) configuration information of one or more cells by a first central unit (CU). The PRACH configuration information of the one or more cells is sent from the first CU to a first distributed unit (DU).

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.