Abstract: A first access network device receives an addition request message from a second access network device. The first access network device determines a third uplink carrier used by a terminal to send a preamble to the first access network device, and sends an addition request acknowledgement message to the second access network device. The addition request acknowledgement message includes carrier indication information. The carrier indication information indicates the third uplink carrier. The third uplink carrier is at least one of the first uplink carrier or a second uplink carrier. The second uplink carrier and the first uplink carrier belong to a same cell of the first access network device and the second uplink carrier is a supplementary uplink carrier.

Abstract: A video service transmission method and apparatus in the field of communications technologies are provided, where data in a video data frame can be split into at least two substreams based on a mapping relationship between data importance and a substream. The data of the at least two substreams may then be mapped, based on port numbers corresponding to the at least two substreams, to bearers corresponding to the at least two substreams, for transmission. Because a network can use different processing methods for data on different bearers, reliable transmission of video data frames of high importance can be ensured with priority by using the video service transmission method and apparatus, so as to improve service experience of video users in a scenario of constrained transmission resources.

Abstract: Example data processing methods and apparatuses are disclosed. In one example data processing method, a first terminal obtains packet delay budget adjustment information, where the packet delay budget adjustment information is used to indicate an adjusted packet delay budget, a packet delay budget adjustment amount, or a packet delay budget adjustment range. The first terminal adjusts a size of a jitter buffer based on the packet delay budget adjustment information, and then buffers data based on the adjusted jitter buffer.

Abstract: This application relates to the field of communications technologies, and in particular, to uplink data sending and receiving methods, an apparatus, and a system. A sending method includes: receiving, by a terminal device, control information sent by a network device, where the control information is used to indicate the terminal device to send first data on a first resource: and when the first resource and a second resource to be used by the terminal device to send second data overlap in a first time domain range in time domain, stopping sending, by the terminal device on the first resource, the first data in the first time domain range, where a frequency domain range corresponding to the first resource belongs to a first carrier, and a frequency domain range corresponding to the second resource belongs to a second carrier.

Abstract: Example random access methods and apparatuses are provided. One example method includes: receiving SUL configuration information, where the SUL configuration information includes at least one first SUL resource and at least one SUL selection threshold that are corresponding to a first SSB; determining, based on a downlink measurement value of the first SSB and the at least one SUL selection threshold, a carrier resource used for random access, where the carrier resource includes one of the at least one first SUL resource or includes a non-SUL resource corresponding to the first SSB; and performing random access on the determined carrier resource.

Abstract: Embodiments of the present application provide a data transmission method. The method includes: sending, by user equipment, uplink data to a base station by using an uplink user equipment relay; and receiving, by the user equipment, downlink data from the base station, or receiving, by the user equipment, downlink data from the base station by using a downlink user equipment relay. Uplink transmission and downlink transmission are separately performed in different transmission paths, so as to reduce impact of a fault of a user equipment relay on a network, and improve network reliability.

Abstract: This application discloses a carrier switching solution for multi-carrier communication. A network device sends configuration information to a terminal. The configuration information includes first uplink carrier information and second uplink carrier information. The first uplink carrier information indicates that a first uplink carrier is an SRS switching-from uplink carrier. The second uplink carrier information indicates that a second uplink carrier is an SRS switching-to uplink carrier. At least one of the first uplink carrier and the second uplink carrier belongs to a cell including a supplementary uplink (SUL) carrier. The terminal may determine the SRS switching-from uplink carrier and the SRS switching-to uplink carrier in a plurality of configured uplink carriers based on the configuration information.

Abstract: This application provides a data transmission method and a communications apparatus. The method includes: receiving uplink resource configuration information including information about at least two uplink reference points, and one uplink reference point corresponds to one uplink carrier; and determining, based on the uplink resource configuration information, an uplink carrier on which an uplink transmission resource is located.

Abstract: Embodiments provide an information processing method and a terminal device, so that a network device can indicate a reserved resource, and the terminal device can process the reserved resource. In these embodiments, configuration information of a reserved resource sent by a network device can be received by a terminal device. The terminal device can determine, based on the configuration information of the reserved resource, that a resource type of the reserved resource is a first-type reserved resource or a second-type reserved resource. The terminal device can determine a radio frequency processing manner on the reserved resource based on the resource type.

Abstract: This application discloses a data transmission method and device to improve transmission efficiency of terminal data. The method of the embodiments of this application includes: receiving, by a second base station, a first message from a first base station, where the first message is used to request the second base station to allocate a radio resource for a specific bearer, and the first message includes resource scheduling information; determining, by the second base station, based on the resource scheduling information, a resource location of the radio resource and scheduling the radio resource; and sending, by the second base station, a first response message in response to the first message to the first base station.

Abstract: A method for receiving a random access preamble includes: sending, by a network device, a broadcast message, where the broadcast message is used to configure an NR uplink resource and an SUL resource, and the NR uplink resource and the SUL resource are used to send a random access preamble; sending, by the network device, first indication information and second indication information to a terminal device, where the first indication information is used to indicate the NR uplink resource or the SUL resource, and second indication information is used to indicate a first random access preamble; and receiving, by the network device, the first random access preamble on the resource indicated by the first indication information.

Abstract: A first access network device receives an addition request message from a second access network device. The first access network device determines a third uplink carrier used by a terminal to send a preamble to the first access network device, and sends an addition request acknowledgement message to the second access network device. The addition request acknowledgement message includes carrier indication information. The carrier indication information indicates the third uplink carrier. The third uplink carrier is at least one of the first uplink carrier or a second uplink carrier. The second uplink carrier and the first uplink carrier belong to a same cell of the first access network device and the second uplink carrier is a supplementary uplink carrier.

Abstract: In this application, a terminal determines a power control parameter, and the terminal determines a transmit power based on the determined power control parameter. The power control parameter includes an interference impact parameter or a path correction parameter of a downlink path loss, and the path correction parameter of the downlink path loss is used to correct a downlink path loss participating in calculation of the transmit power. The interference impact parameter and the path correction parameter of the downlink path loss are determined and obtained based on neighboring cell information of the terminal, and the neighboring cell information includes some or all of the following information: a reference signal transmit power of a neighboring cell, an uplink interference over thermal noise ratio of the neighboring cell, and uplink load of the neighboring cell.

Abstract: This application provides a synchronization method including: sending, by a terminal, a first uplink signal to a network device on a supplementary uplink resource; and receiving indication information returned by the network device, to implement frequency synchronization with the supplementary uplink resource based on a frequency offset value indicated by the indication information. In one embodiment, the terminal in this application implements the frequency synchronization with the supplementary uplink resource based on the indication information sent by the network device, and does not totally rely on a synchronization signal received on a downlink resource.

Abstract: Embodiments of this application provide a measurement report reporting method, a device, and a system. An example method includes: receiving, by a flight terminal, at least one of a height threshold or a quantity threshold of neighboring cells that is sent by a network device; and determining, by the flight terminal based on the at least one of the height threshold or the quantity threshold of neighboring cells, whether to report a measurement result.

Abstract: This application provides a method, including: sending, by user equipment, radio frequency (RF) bandwidth capability information to a network device; receiving, by the user equipment, bandwidth part (BP) configuration information sent by the network device; and determining, by the user equipment, BP group information, where the BP group information is used to indicate at least one BP group, one of the at least one BP group includes at least one BP, the at least one BP group includes a first BP group, the first BP group includes a first BP, and when the first BP group further includes a second BP, a guard interval of RF retuning that is required when the user equipment is switched from the first BP to the second BP is 0 symbols.

Abstract: An uplink resource grant method includes receiving, by a terminal, configuration information from a network device, where the configuration information includes information about a first uplink resource and information about a second uplink resource, and searching, by the terminal, a search space for a downlink control channel to obtain grant information. The search space includes a first control channel candidate set when the downlink control channel carries grant information of the first (or the second) uplink resource, and the search space includes a second control channel candidate set when the downlink control channel carries grant information of the second (or the first) uplink resource or grant information of a downlink resource. The first control channel candidate set is the same as the second control channel candidate set.

Abstract: This disclosure relates to the mobile communications field, and in particular, to data transmission technologies in the mobile communications field. In a data transmission method, a base station allocates, to a terminal, some of time domain symbols that are used for data transmission and that are in a scheduling period of the terminal, and the terminal performs data transmission based on the allocated time domain symbols. According to the method, time domain symbols in the scheduling period that originally belong to the terminal are punctured, a resource waste caused when the terminal occupies all time domain symbols that are used for data transmission and that are in the scheduling period during scheduling each time can be avoided, so that radio resources can be flexibly allocated based on requirements on delays and bandwidth, thereby improving resource utilization.

Abstract: The technology described herein relates to determining transmit power of an uplink signal, to ensure uplink transmission performance of an new radio (NR) base station, and reduce impact on uplink transmission of a long term evolution (LTE) terminal. The technology includes receiving a message sent by a network device, where the message carries a first loss parameter related to a first uplink carrier and a second loss parameter related to a second uplink carrier, and calculating transmit power of an uplink signal. Where the uplink signal is sent on the first uplink carrier, the transmit power of the uplink signal can be calculated based on the first loss parameter related to the first uplink carrier. Where the uplink signal is sent on the second uplink carrier, the transmit power of the uplink signal can be calculated based on the second loss parameter related to the second uplink carrier.

Abstract: Embodiments of the present disclosure disclose a signal transmission apparatus and non-transitory computer-readable storage medium, and relate to the field of communications technologies. The apparatus comprises a memory storing program instructions and a processor coupled to the memory, wherein the program instructions, when executed by the processor, cause the apparatus to obtain configuration information for use to transmit a signal of a second carrier in coverage space of a first carrier, a spectrum occupied by the first carrier and a spectrum occupied by the second carrier overlap, and a subcarrier of the first carrier and a subcarrier of the second carrier are orthogonal; and transmit the signal of the second carrier according to the configuration information.