Abstract: Various embodiments provide a resource allocation method and an apparatus. In those embodiments, a terminal device obtains a first parameter indicating a maximum service data volume to be provided by an access network device for a first service in a first time length; and determines, based on the maximum service data volume, a resource of a media access control protocol data unit MAC PDU, the resource being occupied by buffered data of the first service. In those embodiments, the terminal device determines, based on the maximum service data volume of the first service, the resource of the MAC PDU. Compared with a conventional method, the maximum service data volume of the first service is considered. This helps improve reasonableness of allocating the resource of the MAC PDU to the data of the first service.

Abstract: The embodiments of the present disclosure disclose a small data transmission method and a related device and system. The method may include: broadcasting, by a base station, a paging message, where the paging message carries UE identifiers of a plurality of to-be-paged user equipment UE and small data sent to at least one of the to-be-paged UEs, and the small data is data whose data volume is less than a preset data volume threshold. In the present disclosure, small data may be sent to to-be-paged UE while the base station pages the UE, to reduce signaling and time overheads for sending the small data and improving communication efficiency.

Abstract: A method and a device of a auto-focusing are provided. The method includes: for each of a set comprising N frequency bands of an image, acquiring a FV corresponding to each of focal points during a focusing process; acquiring an interested focal point which corresponds to a maximum FV for the lowest frequency band in the set; if the FV corresponding to the interested focal point for each other frequency band in the set is the maximum FV, determining that the interested focal point is an in-focus point, if the FV corresponding to the interested focal point for any other frequency band is not the maximum FV deleting at least one frequency band for which the FV corresponding to the interested focal point reaches maximum from the set, acquiring a new interested focal point based on the new set, and repeating the above determinations based on the new interested focal point.

Abstract: A communication method, a network device, and a terminal device the method including sending, by a network device, instruction information to a terminal device in a first time period by using a first serving beam, where the instruction information is used to instruct the terminal device to communicate with the network device in a second time period by using a second serving beam, and communicating, by the network device, with the terminal device in the second time period by using the second serving beam according to the instruction information, where the first time period is earlier than the second time period.

Abstract: This application relates to the communications field, and in particular, to a data transmission method, an apparatus, and a system. In the data transmission method, a base station determines a transmission policy, where the transmission policy is used for contention-based uplink data transmission or non-contention based uplink data transmission; and sends the transmission policy to a terminal. The terminal receives the transmission policy sent by the base station, and sends uplink data to the base station based on the transmission policy. With a solution in this application, the base station can determine an appropriate transmission policy based on a network status, and send the transmission policy to the terminal, and the terminal can use, based on the transmission policy, an appropriate transmission mode to send uplink data to the base station, so that transmission efficiency is improved.

Abstract: The present disclosure provides an uplink data packet transmission method. The method includes: determining, by a terminal device, a CP length of a first uplink data frame; if the terminal device is in a state of out of uplink synchronization with a base station and in an RRC connected state, or is in an RRC idle state, generating the first uplink data frame for an uplink data packet according to the CP length and sending the first uplink data frame to the base station. The CP length is greater than a CP length of an uplink data frame sent by a terminal device that is in a state of uplink synchronization and in an RRC connected state. Therefore, signaling procedures such as random access and uplink synchronization can be omitted, so that the terminal device can directly send the uplink data packet by performing signaling exchange once.

Abstract: An embodiment of the present application discloses a control information sending method. The method includes: determining, by a base station, a first resource on a first network, where the first resource is located in a first scheduling resource time granularity of the first network; and sending, by the base station, downlink control information of a second network to a terminal on the first resource, where the downlink control information sent on the first resource is used to schedule a resource in a first scheduling resource time granularity of the second network, and a length of a scheduling resource time granularity of the first network is different from a length of a scheduling resource time granularity of the second network. According to the method, control information of the second network can be transmitted reliably.

Abstract: A communication method, a network device, and a terminal device the method including sending, by a network device, instruction information to a terminal device in a first time period by using a first serving beam, where the instruction information is used to instruct the terminal device to communicate with the network device in a second time period by using a second serving beam, and communicating, by the network device, with the terminal device in the second time period by using the second serving beam according to the instruction information, where the first time period is earlier than the second time period.

Abstract: Embodiments of this application provide a data sending method, a data receiving method, and a device. In the data sending method, a receive end device performs a DRX operation at a low frequency based on a DRX parameter; and receives, in a time indicated by the DRX parameter, first indication information sent by a transmit end device, where the first indication information is used to instruct the receive end device to prepare to receive data at a high frequency. In this process, the receive end device performs the DRX operation only at the low frequency, and starts beam tracking only after receiving the first indication information that instructs the receive end device to receive the data at the high frequency, to avoid unnecessary beam tracking and save power of the receive end device.

Abstract: This application relates to the field of mobile communications, and in particular, to a discontinuous reception (DRX) technology in a wireless communications system. In a wireless communication method provided in this application, a terminal device (UE) receives, in a DRX cycle, a downlink control signal sent by a radio access network device; parses the downlink control signal; and if the downlink control signal fails to be parsed, measures wireless communication quality of a first beam pair, and determines, based on a measurement result, whether to continuously measure another beam pair, to determine a target beam. According to the solutions provided in this application, beam training and reporting of requested radio resources can be effectively reduced, and power consumption of the UE is reduced.

Abstract: Embodiments of this application disclose a random access method. The method includes: obtaining, by a first network device, resource information corresponding to a target service unit, where the resource information is used to indicate a resource to be used, by a user equipment (UE) that has established a connection to the first network device, to send a physical random access channel (PRACH) via the target service unit, and the target service unit is a cell to be accessed by the UE or at least one beam to be accessed by the UE; and sending, by the first network device, a notification message to the UE, where the notification message includes the resource information.

Abstract: A method includes obtaining, by a network device, scheduling time information of at least one beam, where the scheduling time information of the at least one beam includes scheduling time information of a first beam currently accessed by a terminal, and is used to instruct the terminal to receive or send a signal at a scheduling time indicated by the scheduling time information of the at least one beam; and sending, by the network device, first indication information to the terminal, where the first indication information is used to indicate the scheduling time information of the at least one beam.

Abstract: The embodiments of the present disclosure disclose a small data transmission method and a related device and system. The method may include: broadcasting, by a base station, a paging message, where the paging message carries UE identifiers of a plurality of to-be-paged user equipment UE and small data sent to at least one of the to-be-paged UEs, and the small data is data whose data volume is less than a preset data volume threshold. In the present disclosure, small data may be sent to to-be-paged UE while the base station pages the UE, to reduce signaling and time overheads for sending the small data and improving communication efficiency.

Abstract: Embodiments of the present invention relate to communications technologies, and provide a data transmission method and an apparatus. The method includes: sending, by a base station, a grouping instruction to a target terminal, where the grouping instruction is used to group, in a preset grouping manner, terminals in a cell in which the target terminal is located into N groups, totally or partially different resources are allocated to terminals in different groups of the N groups, and a resource corresponding to an ith group of the N groups is used by a terminal in the ith group in uplink non-scheduled transmission; and receiving data that is sent by the target terminal using a target resource. In the solutions, terminals in a cell are grouped, and terminals in a same group contend for a resource allocated to the group. This mitigates resource collision when an uplink non-scheduled transmission solution is used.

Abstract: Provided are an automatic focusing method and device. The method comprises: acquiring a video image, and acquiring focusing values (FVs) of focus points of N frequency bands of the video image in a focusing process, the N frequency bands forming a set, and N being a positive integer greater than 1; acquiring a focus point corresponding to a maximum FV in a lowest frequency band in the set, and using the focus point as a current focus point; judging whether the FV of the current focus point in another frequency band in the set is the maximum FV; if yes, determining the current focus point as a sharp focus point, and if not, deleting, from the set, the frequency band in which the FV of the current focus point reaches the maximum FV, and acquiring a new current focus point according to a lowest frequency band in the set from which the foregoing frequency band is deleted, and then again repeating the judgment.

Abstract: A transmission method is implemented by a communications device including a first functional entity and a second functional entity. A first carrier is configured for the first functional entity, and a second carrier is configured for the second functional entity. The second functional entity obtains first information, where the first information is first control information of the first functional entity, or is the first control information and second control information of the second functional entity, the first control information includes a first identifier, and the first identifier is used to indicate the first carrier; and the second functional entity sends the first information by using the second carrier.

Abstract: This application relates to the communications field, and in particular, to a data transmission method, an apparatus, and a system. In the data transmission method, a base station determines a transmission policy, where the transmission policy is used for contention-based uplink data transmission or non-contention based uplink data transmission; and sends the transmission policy to a terminal. The terminal receives the transmission policy sent by the base station, and sends uplink data to the base station based on the transmission policy. With a solution in this application, the base station can determine an appropriate transmission policy based on a network status, and send the transmission policy to the terminal, and the terminal can use, based on the transmission policy, an appropriate transmission mode to send uplink data to the base station, so that transmission efficiency is improved.

Abstract: An embodiment of the present application discloses a control information sending method. The method includes: determining, by a base station, a first resource on a first network, where the first resource is located in a first scheduling resource time granularity of the first network; and sending, by the base station, downlink control information of a second network to a terminal on the first resource, where the downlink control information sent on the first resource is used to schedule a resource in a first scheduling resource time granularity of the second network, and a length of a scheduling resource time granularity of the first network is different from a length of a scheduling resource time granularity of the second network. According to the method, control information of the second network can be transmitted reliably.

Abstract: The present disclosure provides an uplink data packet transmission method. The method includes: determining, by a terminal device, a CP length of a first uplink data frame; if the terminal device is in a state of out of uplink synchronization with a base station and in an RRC connected state, or is in an RRC idle state, generating the first uplink data frame for an uplink data packet according to the CP length and sending the first uplink data frame to the base station. The CP length is greater than a CP length of an uplink data frame sent by a terminal device that is in a state of uplink synchronization and in an RRC connected state. Therefore, signaling procedures such as random access and uplink synchronization can be omitted, so that the terminal device can directly send the uplink data packet by performing signaling exchange once.