Abstract: Embodiments of this application provide a data transmission method and an apparatus, and relate to the communications field, to reduce power consumption and a delay for sending uplink data by a terminal device. The method includes: A terminal device receives a first resource configuration from a network device, where the first resource configuration is used to indicate a first resource, and the first resource is used by the terminal device to send data when the terminal device is in an idle mode; and when the terminal device is in the idle mode and has to-be-sent first uplink data, the terminal device sends the first uplink data to the network device on the first resource. The embodiments of this application are used in an Internet of Things communications system.

Abstract: This application provides a wake up signal sending method and a device. One example method includes: receiving, from a core network device, an identifier of first category to which a terminal device belongs, wherein different categories correspond to different service features; receiving a configuration of a wake up signal from a network device; determining, based on the wake up signal and the first category, weather the terminal device is woken up.

Abstract: Example communication methods and apparatus are described. One example method includes receiving a first parameter by a terminal device from a first device, where the first parameter corresponds to first wake-up signal (WUS) configuration information in at least one piece of WUS configuration information, and the first WUS configuration information includes information about a first WUS time-frequency resource. The terminal device determines the first WUS time-frequency resource based on the first parameter, and receives a first WUS from a second device on the first WUS time-frequency resource, where the first WUS is used to wake up the terminal device. In this method, the terminal device can determine the first WUS time-frequency resource based on the first parameter received from the first device, and then receive the first WUS from the second device on the first WUS time-frequency resource.

Abstract: Embodiments of this application provide a data transmission method and an apparatus, and relate to the communications field, to reduce power consumption and a delay for sending uplink data by a terminal device. The method includes: A terminal device receives a first resource configuration from a network device, where the first resource configuration is used to indicate a first resource, and the first resource is used by the terminal device to send data when the terminal device is in an idle mode; and when the terminal device is in the idle mode and has to-be-sent first uplink data, the terminal device sends the first uplink data to the network device on the first resource. The embodiments of this application are used in an Internet of Things communications system.

Abstract: Examples in this application provides methods and devices for sending wake-up signals. One example method may include receiving, from a core network device, a first category which a terminal device belongs to, where the first category corresponds to a first service feature, receiving, from a network device, a configuration of a plurality of wake-up signals, determining a to-be-monitored wake-up signal in the plurality of wake-up signals based on the first category, and monitoring the to-be-monitored wake-up signal.

Abstract: Embodiments of this application provide an information processing method and an apparatus. The information processing method includes: determining, by a network device, an early-data-transmission terminal type supported by the network device, wherein the early-data-transmission terminal type comprises at least a terminal device using a user plane (UP) or a control plane (CP) optimization mode in performing early data transmission; and sending, by the network device to the terminal device, information about the early-data-transmission terminal type supported by the network device.

Abstract: A data transmission method, a base station, and user equipment are provided. The method includes: receiving, by a base station, a random access request sent by user equipment, where the random access request carries indication information to request uplink scheduling information; and sending, by the base station, a random access response to the user equipment, where the random access response carries first uplink scheduling information or second uplink scheduling information, the first uplink scheduling information indicates that a message Msg 3 uses a first transport block, the second uplink scheduling information indicates that the Msg 3 uses a second transport block, the first transport block is larger than the second transport block, the first transport block can be used to transmit signaling and user data, and the second transport block can be used to transmit the signaling, but is not used to transmit the user data.

Abstract: Example signal sending methods and apparatus are described. One example method includes receiving a media access control (MAC) control element (CE) from a terminal device. The MAC CE indicates a power headroom in a first power headroom set or a power headroom in a second power headroom set. If the MAC CE indicates the power headroom in the first power headroom set, the power headroom in the first power headroom set is determined based on a second bit field comprised in the MAC CE, where the MAC CE includes a first bit field and the second bit field, and the first bit field is a reserved bit field. If the MAC CE indicates the power headroom in the second power headroom set, the power headroom in the second power headroom set is determined based on a third bit field comprised in the MAC CE, where the third bit field includes a bit of the first bit field and a bit of the second bit field.

Abstract: Example resource configuration methods and apparatus are described. One example resource configuration method includes applying, by a terminal device, to a network device for semi-persistent scheduling. The terminal device receives configuration information sent by the network device, where the configuration information is used to configure a first semi-persistent scheduling resource for the terminal device. The terminal device configures the first semi-persistent resource for the terminal device based on the configuration information, and sends uplink data to the network device on the first semi-persistent scheduling resource.

Abstract: This application provides a random access method and apparatus. The method may include determining, by a terminal, a service attribute of to-be-transmitted data, where the service attribute includes one or more of the following: a service type attribute, a service packet attribute, and a service latency attribute. The method may also include sending, by the terminal when the service attribute meets a preset condition for early data transmission, a random access request to a network device using a dedicated resource for the early data transmission. In this way, the early data transmission is initiated after the service attribute meets the preset condition for the early data transmission, so that a quantity of times for which the early data transmission is initiated is reduced, thereby saving resources. In addition, a success rate of the early data transmission can be improved.

Abstract: This application provides a data transmission method. The method includes: sending, by a terminal device, a first indication to an access network device, wherein the first indication is used to indicate early data transmission; and performing, by the terminal device, the early data transmission between the terminal device and the access network device.

Abstract: Embodiments of this application provide a method, the method includes: sending, by the RRC entity, a first RRC message to a lower-layer entity, and receiving, by the MAC entity, a first RRC message from an upper-layer entity, where the first RRC message includes to-be-transmitted data; determining, by the MAC entity, a first random access preamble if a data amount supported by a coverage level of the communications apparatus meets a size of the first RRC message, where the first random access preamble is used to indicate that the first RRC message is to be sent in a random access process.

Abstract: Example resource configuration methods and apparatus are described. One example resource configuration method includes applying, by a terminal device, to a network device for semi-persistent scheduling. The terminal device receives configuration information sent by the network device, where the configuration information is used to configure a first semi-persistent scheduling resource for the terminal device. The terminal device configures the first semi-persistent resource for the terminal device based on the configuration information, and sends uplink data to the network device on the first semi-persistent scheduling resource.

Abstract: Example resource configuration methods and devices are described. One example resource configuration method includes applying to a network device for semi-persistent scheduling by a terminal device. The terminal device receives configuration information sent by the network device, where the configuration information is used to configure a first semi-persistent scheduling resource for the terminal device. The terminal device configures the first semi-persistent resource for the terminal device based on the configuration information, and sends uplink data to the network device on the first semi-persistent scheduling resource.

Abstract: Example communication methods and apparatus are described. One example method includes receiving a first parameter by a terminal device from a first device, where the first parameter corresponds to first wake-up signal (WUS) configuration information in at least one piece of WUS configuration information, and the first WUS configuration information includes information about a first WUS time-frequency resource. The terminal device determines the first WUS time-frequency resource based on the first parameter, and receives a first WUS from a second device on the first WUS time-frequency resource, where the first WUS is used to wake up the terminal device. In this method, the terminal device can determine the first WUS time-frequency resource based on the first parameter received from the first device, and then receive the first WUS from the second device on the first WUS time-frequency resource.

Abstract: A signal sending method includes: generating a MAC CE indicating a power headroom in a first power headroom set or a power headroom in a second power headroom set; and if the MAC CE indicates the power headroom in the first power headroom set, the MAC CE includes a first bit field and a second bit field, the first bit field is a reserved bit field, and the second bit field indicates the power headroom in the first power headroom set; or if the MAC CE indicates the power headroom in the second power headroom set, the MAC CE includes a third bit field, the third bit field is used to indicate the power headroom in the second power headroom set, and the third bit field includes a bit of the first bit field and a bit of the second bit field; and sending the MAC CE to a network device.

Abstract: A multicast bearer management method includes: in a process of receiving service data of a single cell-multimedia broadcast multicast service traffic channel SC-MTCH, suspending a single cell-multimedia broadcast multicast service point to multipoint radio bearer SC-MRB corresponding to the SC-MTCH when there is a first type of data to be received; and when reception of the first type of data is completed, restoring or releasing the SC-MRB based on a temporary mobile group identity TMGI and/or a session identity corresponding to the SC-MRB. The technical solutions in the embodiments of the present invention can prevent frequent release and establishment of SC-MRBs, thereby saving network resources and power of a terminal device.

Abstract: This application provides a data transmission method. The method includes: sending, by a terminal device, a first indication to an access network device, wherein the first indication is used to indicate early data transmission; and performing, by the terminal device, the early data transmission between the terminal device and the access network device.

Abstract: Examples in this application provides methods and devices for sending wake-up signals. One example method may include receiving, from a core network device, a first category which a terminal device belongs to, where the first category corresponds to a first service feature, receiving, from a network device, a configuration of a plurality of wake-up signals, determining a to-be-monitored wake-up signal in the plurality of wake-up signals based on the first category, and monitoring the to-be-monitored wake-up signal.

Abstract: Example signal sending methods and apparatus are described. One example method includes generating a media access control (MAC) control element (CE) indicating a power headroom in a first power headroom set or a power headroom in a second power headroom set. If the MAC CE indicates the power headroom in the first power headroom set, the MAC CE includes a first bit field and a second bit field, where the first bit field is a reserved bit field, and the second bit field indicates the power headroom in the first power headroom set. If the MAC CE indicates the power headroom in the second power headroom set, the MAC CE includes a third bit field, where the third bit field is used to indicate the power headroom in the second power headroom set, and the third bit field includes a bit of the first bit field and a bit of the second bit field. The MAC CE is sent to a network device.