Abstract: The present disclosure relates to redirection methods and devices. In one example method, a terminal device sends a radio resource control (RRC) connection request message to a network device, where the RRC connection request message is used to request to establish an RRC connection in a first cell. The terminal device receives an RRC connection reject message sent by the network device, where the RRC connection reject message includes redirection information. The terminal device chooses, based on the redirection information, to camp on a second cell.

Abstract: A data transmission method and apparatus are provided. The method includes: A terminal device sends a message 1 to a first network device, where the message 1 includes a random access preamble. The terminal device receives DCI and a message 2 scheduled by the DCI from the first network device, where the message 2 includes downlink data, the DCI and/or the message 2 include/includes first information, and the first information is used to schedule ACK/NACK feedback information of the message 2. The terminal device sends the ACK/NACK feedback information to the first network device based on the first information. According to the foregoing method, the first information is used to schedule the ACK/NACK feedback information. Therefore, the terminal device may send the ACK/NACK feedback information of the message 2 to the first network device in an MT-EDT scenario and based on the first information included in the DCI and/or the message 2, to improve robustness of transmission of the downlink data in the message 2.

Abstract: This application relates to the field of wireless communication technologies, and in particular, to a time control, an apparatus, and a system. This application provides a timer control method, including: When downlink control information indicates data transmission of N hybrid automatic repeat request HARQ processes and a terminal device is configured with the N HARQ processes, where N is an integer greater than or equal to 2, a discontinuous reception inactivity timer is not started or the discontinuous reception inactivity timer is stopped. This application reduces time required by the terminal device to monitor a downlink channel or downlink data through control by the timer, thereby reducing power consumption of the terminal device.

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: A monitoring method and an apparatus are provided. The method includes transmitting, by a terminal device, first information based on a first repetition number, where the first repetition number is less than or equal to a second repetition number, and the second repetition number is a maximum repeat transmission number of the first information. The method also includes determining, by the terminal device, a scheduling end moment of the first information based on the second repetition number, where the scheduling end moment of the first information is a transmission end moment of the first information when the first information is transmitted based on the second repetition number. The method further includes starting or restarting, by the terminal device, a timer at the scheduling end moment of the first information, and monitoring a PDCCH search space before the timer expires or stops.

Abstract: This application relates to a resource management method and an apparatus. The resource management method includes: A network device determines to release or disable one or more uplink resources, where the uplink resources are used to receive uplink data from a terminal device in idle mode. The network device sends first information, where the first information is used to indicate to release or disable a part or all of the one or more uplink resources. The network device may implement relatively flexible management on the uplink resources that are configured for the terminal device and that are used for transmission by the terminal device in idle mode, so that the network device may also schedule the uplink resources when needing to schedule uplink resources.

Abstract: Embodiments of this application disclose a resource scheduling method, an access network device, and user equipment, to reduce a quantity of times of applying for an uplink resource by using a random access process, reduce additional signaling overheads brought to the user equipment, and reduce power consumption of the user equipment. The method part in the embodiments of this application includes: determining, by an access network device, a target time interval in which user equipment monitors a downlink control channel; and sending, by the access network device, uplink resource scheduling information to the user equipment by using the downlink control channel in the target time interval.

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.

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 data transmission method and a communication apparatus. The method includes: A network device sends indication information to a terminal device, where the indication information is used to indicate a first transmission mode, and the first transmission mode includes: enabling a hybrid automatic repeat request function, disabling the hybrid automatic repeat request function, or at least one hybrid automatic repeat request mode. Therefore, after receiving the indication information sent by the network device, the terminal device determines the first transmission mode based on the indication information, and performs data transmission in the first transmission mode, to perform data transmission based on requirements of different services. In this way, flexibility of the data transmission is improved.

Abstract: This application discloses a resource configuration method and an apparatus, which are applied to the field of communications technologies. The method includes: User equipment UE receives a first message sent by a base station. The first message carries configuration information of a preconfigured resource, and the preconfigured resource is used for data transmission by the UE in an idle state. The UE obtains first indication information, and releases the preconfigured resource based on the first indication information. The method and the apparatus that are provided in this application resolve a problem in the current technology that a preconfigured resource is wasted if the UE cannot properly release the resource after the resource is allocated to the UE.

Abstract: Embodiments of this application disclose a resource scheduling method, an access network device, and user equipment, to reduce a quantity of times of applying for an uplink resource by using a random access process, reduce additional signaling overheads brought to the user equipment, and reduce power consumption of the user equipment. The method part in the embodiments of this application includes: determining, by an access network device, a target time interval in which user equipment monitors a downlink control channel; and sending, by the access network device, uplink resource scheduling information to the user equipment by using the downlink control channel in the target time interval.

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 system message indication method, an apparatus, and a system. The method may include generating, by a network device, notification information. The notification information may indicate status information of first information, the first information may include at least one bit in a first system message, and a quantity of bits included in the first information may be less than a quantity of bits included in the first system message. The method may also include sending, by the network device, the notification information to a terminal device.

Abstract: Embodiments provide an Internet of Things transmission optimization method. The method includes: generating, by a receiver side device, first indication information when the receiver side device receives a last PDU sent by a transmitter side device, where the first indication information is indicates whether the receiver side device is to send a status report; and sending, by the receiver side device, the first indication information to the transmitter side device.

Abstract: A system information sending method is provided, to resolve a technical problem that UE may not receive a paging message when a DRX cycle is greater than an MP. A network device may separately set a modification period (namely, a first period) for first-type system information (which, for example, may include paging configuration information), to ensure that the first-type system information is not to be modified in the first period. For example, the first period may be greater than a DRX cycle. In this way, when a terminal device wakes up based on the DRX cycle, a time when the terminal device wakes up is still in the first period. The terminal device may normally receive a paging message indicating that the paging configuration information is to be modified, thereby obtaining new paging configuration information in time and avoiding missing a subsequent paging message.