Abstract: This application provides a method for reporting a buffer status report and a communication apparatus. The method includes: A first communication apparatus sends a buffer status report BSR to a second communication apparatus, where the BSR includes a first parameter and a second parameter, the first parameter indicates a BSR index, the second parameter is an associated parameter of the BSR index, the first parameter and the second parameter indicate a data amount of a service of the first communication apparatus, and the BSR index indicates a buffer status value interval.

Abstract: Embodiments of this application provide a communication method and apparatus, and a computer-readable storage medium. The communication method may include: A terminal device receives a first indication from a network device. The first indication includes a first configuration of a data radio bearer (DRB) of the terminal device or a first configuration of a first logical channel (LCH) or a second LCH corresponding to the DRB, and the first configuration indicates to trigger a buffer status report (BSR) when a first duration expires and to-be-transmitted data on the first LCH or the second LCH meets a first condition. According to embodiments of this application, the BSR can be triggered in a timely manner, avoiding a data loss, helping assist the network device in adjusting a scheduling policy, and improving communication quality.

Abstract: The present disclosure relates to data transmission methods and apparatuses. One example data transmission method includes determining a first logical channel based on attribute information of an uplink transmission resource and resource mapping restriction information of a logical channel, allocating, from the uplink transmission resource, a transmission resource to at least one logical channel in the first logical channel, determining a second logical channel when there is a remaining resource in the uplink transmission resource, allocating the remaining resource to at least one logical channel in the second logical channel, and transmitting, on the uplink transmission resource, data on the at least one logical channel in the first logical channel and data on the at least one logical channel in the second logical channel.

Abstract: A cell switching method and a communication apparatus. The method includes: the second distributed unit DU receives a first request message from a CU, wherein the first request message is for requesting candidate cell information of a terminal device; and sends a first message to the CU based on the first request message, wherein the first message includes configuration information of K candidate cells of the terminal device and timing advance TA information of the K candidate cells, and K is an integer greater than 0, wherein the TA information indicates that a TA of the candidate cell is 0. A terminal device is able to complete uplink synchronization without needing to perform RACH.

Abstract: This application provides a timing method and apparatus. The method includes: A first device calculates a propagation delay between the first device and a second device based on a first moment, a third moment, and a first duration, where a moment at which a baseband of the first device sends a first reference signal is a first moment, and a moment at which a baseband of the second device receives the first reference signal is a second moment, and a moment at which the baseband of the first device receives a second reference signal is a third moment, and a moment at which the baseband of the second device sends the second reference signal is a fourth moment, and the first duration is related to the second moment and the fourth moment.

Abstract: Example data processing methods and example apparatuses are provided. One example method includes obtaining a first data unit. A packet loss status of a first set to which the first data unit belongs is detected. The first set is discarded when the packet loss status of the first set satisfies a first condition.

Abstract: This application relates to data processing methods and apparatuses. In an example method, a receive end obtains first indication information that indicates a maximum serial number of one or more data units that are discarded. The receive end updates a value of a first variable maintained by an entity at the receive end to be greater than the maximum serial number, where the first variable may indicate that a data unit whose serial number is greater than or equal to the value of the first variable is to be processed by the entity at the receive end; or updates a value of a first variable maintained by an entity at the receive end to be equal to the maximum serial number, where the first variable may indicate that a data unit whose serial number is greater than the value of the first variable is to be processed by the entity at the receive end.

Abstract: This application provides a communication method and apparatus. In the method, a terminal device receives first indication information, where the first indication information indicates candidate M starting moments of a DRX on duration timer, each of M?1 starting moments in the M starting moments other than a latest starting moment is corresponding to one monitoring window, and M is an integer greater than or equal to 2. The terminal device monitors a first signal in a monitoring window corresponding to each of the M?1 starting moments, where the first signal indicates to start the DRX on duration timer. If the first signal is obtained through monitoring in a monitoring window corresponding to a first starting moment, the DRX on duration timer is started at the first starting moment, where the first starting moment is one of the M?1 starting moments.

Abstract: This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: A terminal device receives first indication information from an access network device. The first indication information indicates time-frequency positions of M transmission opportunities, an amount of data that can be carried on each of the M transmission opportunities matches a data amount of a first-type video frame, and the data amount of the first-type video frame is less than a data amount of a second-type video frame. The M transmission opportunities include a first transmission opportunity, the first transmission opportunity corresponds to a first video frame, and M is a positive integer. If the first video frame belongs to the second-type video frame, the terminal device sends the first video frame to the access network device on a second transmission opportunity.

Abstract: A communication method includes sending, by a terminal device, first indication information to a first communication device. The first indication information indicates the first communication device to render first foreground content, and the first foreground content is to-be-displayed foreground content of the terminal device. The communication information also includes receiving, by the terminal device, first information from the first communication device. The first information comprises second foreground content and second background content. The second foreground content is obtained by rendering the first foreground content. The second background content is obtained by decoding third background content. The third background content is determined based on first background content. The first background content is to-be-displayed background content of the terminal device.

Abstract: This application provides a data transmission method and an apparatus. The method includes: A first central unit receives data from a user plane function network element, and then determines time information corresponding to the data, where the time information is used by a first distributed unit and a second distributed unit to synchronously transmit the data. Further, the first central unit separately sends the data and the time information to the first distributed unit and the second distributed unit. The first distributed unit and the second distributed unit send the data to a terminal device based on the time information. According to the method, the first distributed unit and the second distributed unit can perform synchronous transmission to the terminal device, to improve data transmission reliability.

Abstract: A first terminal obtains a first transmission resource that is sent by an access network device and that is used by the first terminal to send data on a sidelink, where the sidelink is a wireless communication link between the first terminal and a second terminal, and the first transmission resource is a resource of an unlicensed spectrum. The first terminal performs a channel access procedure on the unlicensed spectrum. The first terminal sends first information to the access network device when the first terminal determines that a failure occurs in the channel access procedure performed on the unlicensed spectrum, where the first information is used to request to allocate a second transmission resource to the sidelink of the unlicensed spectrum.

Abstract: This application relates to the field of communication technologies, and discloses a communication method and apparatus. The method includes: A network device determines energy saving information of a first cell, where the energy saving information indicates a compensation value corresponding to a first energy saving state, and when the first cell is in the first energy saving state, the compensation value is used to compensate a measurement value of an SSB associated with the compensation value; and sends the energy saving information to a terminal device. According to the method, the network device may perform an energy saving operation on the SSB (for example, reducing a transmit power of the SSB), and send the energy saving information of the first cell to the terminal device.

Abstract: A reflective quality of service QoS method and an apparatus are provided, to implement uplink layered QoS, and implement more refined uplink QoS management. The method includes: A terminal device determines to enable a first reflective QoS manner, and determines a first rule in the first reflective QoS manner. The first rule includes a QoS rule and/or a QoS flow to data radio bearer DRB mapping rule. The terminal device identifies classification information of a packet in the first reflective QoS manner, where the classification information is for distinguishing between packets in a same internet protocol IP flow.

Abstract: Methods, systems, and devices for wireless communications are described. A first device may receive signaling associated with a traffic class from a second device. The first device may determine that the traffic class is included in a set of known traffic classes based on a set of features associated with the signaling. In response to determining that the traffic class is included in the set of known traffic classes, the first device may use a machine learning model to obtain a prediction of an application associated with the signaling. The prediction may be based on the set of features. The machine learning model may be trained at the first device or the second device. The first device may receive information associated with the machine learning model from the second device.

Abstract: A communication method and apparatus includes: A communication device determines at least one first packet in first duration. The at least one first packet belongs to a same PDU set, the first duration is determined based on a first interval or burst duration, the first interval is a time interval at which the communication device obtains two adjacent PDU sets in time domain, and the burst duration is duration of one PDU set. Then, the communication device sends the at least one first packet.

Abstract: This application discloses an information transmission method and apparatus, and relates to the field of wireless communications technologies. The method in this application includes: receiving first resource configuration information, where the first resource configuration information is used to indicate a transmission resource of downlink control information, the downlink control information includes information used to indicate a transmission resource of a first message in a random access process and/or information used to indicate a transmission resource of a second message in the random access process, the first message includes a random access response message, and the second message includes a contention resolution message; and then receiving the first message and/or the second message based on the downlink control information. This application is applicable to a random access procedure.

Abstract: Embodiments of this application provide a communication method and apparatus. The method includes: A first device (for example, a terminal device or a network device) determines that a first data frame is lost. The first device discards a first data packet received from an upper layer, where the first data packet is a part of or all data packets in a second data frame, the second data frame is located after the first data frame, and the second data frame is associated with the first data frame. According to the method disclosed in this application, a data frame transmission failure is identified, and proactive discarding of a data packet in a subsequent data frame associated with the lost data frame is triggered, to avoid a waste of air interface resources and transmission resources, reduce execution of unnecessary decoding operations, and reduce power consumption of the device while improving resource utilization.

Abstract: A signal transmission method includes receiving configuration information from a network device. The configuration information is used to indicate a serving cell that is allowed or forbidden to be used by a terminal for a first service or first control information. The method also includes adjusting the serving cell that is allowed or forbidden to be used by the terminal for the first service or the first control information. The method further includes transmitting the first service or the first control information by using an adjusted serving cell.

Abstract: This application provides an example vehicle to everything (V2X) communication method and an example V2X communications apparatus. According to the method, different transmission parameters can be selected for data packets corresponding to different services, ProSe per-packet priority (PPPP) of services, ProSe per-packet reliability (PPPR) of services, or quality of service flow identifiers (QFIs) based on service information of the data packets.