Abstract: A communication method and a communication apparatus are provided. The communication method includes: A first communication apparatus and a second communication apparatus determine a first identifier based on a second identifier, where a length of the first identifier is less than a length of the second identifier, and the second identifier is an identifier of the first communication apparatus. The second communication apparatus sends a first message; and correspondingly, the first communication apparatus receives the first message, where the first message includes the first identifier. The first communication apparatus wakes up. According to embodiments of this application, a quantity of bits occupied by the identifier of the first communication apparatus in the first message can be reduced, so that a capacity of the first message is increased, and the first message can be used to wake up more communication apparatuses.

Abstract: A signal transmission method and a communication apparatus are provided. The method includes: A network device sends at least two synchronization signals, where a time interval between every two adjacent synchronization signals in the at least two synchronization signals is less than or equal to a first value, and the at least two synchronization signals include a first synchronization signal; and the network device sends a wake-up signal after sending the first synchronization signal, where the wake-up signal is used to wake up at least one terminal device, a time interval between the first synchronization signal and the wake-up signal is less than or equal to a second value, and the first value is greater than the second value. The method may be applied to a communication system, for example, 5G or NR, LTE, V2X, D2D, M2M, MTC, the internet of things, a future communication system, or the like.

Abstract: This application relates to a resource selection method and a first terminal. The method includes: before determining a first transmission resource used to transmit a first transport block, a first terminal determines first duration required by the first terminal to perform first LBT, and determines an unavailable resource in a resource selection window based on the first duration; and/or determines second duration required by a second terminal to perform second LBT, and determines an unavailable resource in the resource selection window based on the second duration. The first terminal selects the first transmission resource based on at least one of the first unavailable resource or the second unavailable resource.

Abstract: Embodiments of this application provide a communication method: A first terminal device sends first information to at least one second terminal device, to indicate the at least one second terminal device to perform feedback. The first terminal device receives a feedback of a third terminal device, where the third terminal device is a terminal device that is in the at least one second terminal device and that has performed feedback. The first terminal device sends first resource indication information, to indicate a first resource, where the first resource is for the third terminal device to perform transmission, and the first resource is included in a channel occupancy time COT preempted by the first terminal device. A UE 1 allocates a COT resource to a UE 2 that has performed feedback. This can reduce resource waste, avoid COT interruption, improve spectrum resource utilization and improve system transmission performance.

Abstract: A non-terrestrial network communication method includes: a terminal receives, from a first network device, a message indicating that a satellite that provides a service for a first cell is updated to a second satellite, where the first message includes information used to determine a coverage area of a second cell served by the second satellite on the ground. The terminal determines, based on a location of the terminal and the coverage area of the second cell on the ground, whether the terminal is located within or outside the coverage area.

Abstract: This application provides a communication method and apparatus. A terminal may obtain configuration information of a wake-up signal of a camped cell and configuration information of a wake-up signal of another cell from a network device, to receive the wake-up signal of the camped cell and/or the wake-up signal of the another cell based on a signal measurement requirement of the terminal. In this way, power consumption of the terminal is reduced, and a signal of the camped cell and/or a signal of the another cell are/is measured. This can avoid a case that a main radio frequently wakes up to measure cell quality, to reduce energy consumption of the terminal.

Abstract: A communication method includes receiving monitoring information, where the monitoring information comprises information of a search space set corresponding to a wake-up signal (WUS); determining at least one of a monitoring periodicity of the WUS or a monitoring occasion in the monitoring periodicity based on the information of the search space set; receiving the WUS from the network device, where the WUS comprises wake-up information of at least one terminal device; and performing PDCCH monitoring based on wake-up information of the terminal device in on duration of at least one discontinuous reception DRX cycle corresponding to the WUS, where the wake-up information of at least one terminal device comprises the wake-up information of the terminal device.

Abstract: The technology of this application relates to a communication method and a communication apparatus. The method may include a terminal device receiving a first wake-up signal, where the first wake-up signal is used to wake up a terminal device group, the terminal device group includes at least two terminal devices, and the at least two terminal devices include the terminal device, and the terminal device accessing a network device based on the first wake-up signal. The network device may wake up a group of terminal devices by sending a wake-up signal. In other words, the group of terminal devices may access the network device based on the same wake-up signal. In this way, resource overheads caused by waking up the at least two terminal devices can be reduced.

Abstract: A communication method, a device, and an apparatus are provided. A network device determines N configuration parameter sets configured for a terminal device Each of the N configuration parameter sets includes a parameter for detecting a candidate downlink control channel, and N is an integer greater than or equal to 2. The network device sends information about the N configuration parameter sets to the terminal device. Each of the N configuration parameter sets includes at least one of the following parameters: a bandwidth part, a search space parameter, a candidate downlink control channel detection period, a control resource set parameter, or a time domain resource set corresponding to the candidate downlink control channel. The network device may configure the N configuration parameter sets for the terminal device.

Abstract: Embodiments of this application provide a communication method and a communication apparatus. The communication method includes: A terminal device performs blind detection on downlink control information (DCI). The terminal device determines a sending slot of a physical downlink shared channel (PDSCH) and/or a sending slot of a physical uplink shared channel (PUSCH) based on a target slot and the DCI, where the target slot is one of a plurality of slots that carry the DCI, the plurality of slots are for transmitting one piece of DCI, or each of the plurality of slots is for transmitting the same piece of DCI. In this way, when one piece of DCI is transmitted in the plurality of slots or the same piece of DCI is transmitted in each of the plurality of slots.

Abstract: A communication method and device is provided where a network device can learn of a synchronization signal/physical broadcast channel block selected by a terminal device.

Abstract: Embodiments of this application provide a control channel configuration method, a base station, and a terminal device. The method includes: determining, by a base station, a configuration of a time-frequency resource unit from at least two configurations of a time-frequency resource unit of a control channel; and sending, by the base station, indication information to a terminal device, where the indication information is used to indicate the configuration of the time-frequency resource unit, and the at least two configurations of a time-frequency resource unit include a first configuration and a second configuration. In the embodiments of this application, the base station can flexibly configure the time-frequency resource unit of the control channel. In addition, flexibly configuring a time-frequency resource unit can reduce a probability that time-frequency resource units of different structures are blocked, thereby reducing complexity of detecting the control channel by the terminal device.

Abstract: A signal transmission method and a communication apparatus are provided. The method may include: A terminal device monitors a wake-up signal in a first time window, where the wake-up signal indicates information about at least one terminal device that needs to be woken up. The terminal device determines, based on a result of monitoring the wake-up signal in the first time window, whether to monitor the wake-up signal in a first time period after the first time window. The method provided in embodiments may be applied to a communication system, for example, a 5G communication system or an NR communication system, an LTE communication system, a V2X communication system, a D2D communication system, an M2M communication system, an MTC communication system, or an internet of things communication system.

Abstract: This application provides a transmission method and apparatus. The method includes: A terminal sends a random access preamble to a base station at a first transmit power, and sends a PUSCH to the base station at a second transmit power, where power deviation between the first transmit power and the second transmit power is indicated to the base station by indication information; and the terminal receives a random access response or a contention resolution message from the base station. Implementing this application can improve an existing random access procedure, so that the random access procedure is adapted to scenario requirements such as low delay, high reliability, and large-scale terminal access.

Abstract: A control information transmission method, apparatus, and systems are disclosed. An example method includes: determining configuration information of a control channel, wherein the configuration information comprises at least one of frequency domain information or time domain information, the at least one of frequency domain information or time domain information indicates a time-frequency resource occupied by the control channel, and the configuration information further comprises indication information indicating a quantity of at least one resource element set, wherein the time-frequency resource occupied by the control channel comprises the at least one resource element set; mapping control information to one or more of the at least one resource element set based on the configuration information; sending the configuration information to a terminal device; and sending the control information to the terminal device.

Abstract: A downlink control channel monitoring method includes determining a first search space (SS) set and a second SS set. The method also includes determining, based on a first priority of the first SS set and a second priority of the second SS set, whether to monitor a first physical downlink control channel (PDCCH) on a first downlink control channel candidate resource of the first SS set, and whether to monitor a second PDCCH on a second downlink control channel candidate resource of the second SS set. The first priority of the first SS set is equal to the second priority of the second SS set. The second PDCCH carries a power saving signal.

Abstract: This application provides a wireless communication method, a terminal device, and a network device. The wireless communication method includes: A terminal device selects, based on a first parameter, a value set from a first value set and a second value set that are of slot offsets and that are configured by a network device, wherein all slot offsets in the first value set are greater than a first threshold, and at least one slot offset in the second value set is equal to the first threshold; and receive DCI, wherein a slot offset carried in the DCI belongs to the selected value set, and the slot offset is used to indicate an offset in a quantity of slots of a PDSCH scheduled by the DCI relative to the DCI. According to the technical solutions in this application, the different value sets correspond to different data channel scheduling mechanisms.

Abstract: A method includes: transmitting a first common control channel on a first resource, wherein the first resource is one candidate resource of a first candidate resource set within downlink resources of a cell, wherein the first common control channel carries a common search space indication information, wherein the common search space indication information indicates an actual resource of a common search space in a second candidate resource set of the cell, wherein the second candidate resource set is a subset of a common search space candidate resource set, wherein the common search space candidate resource set comprises at least two subsets, and wherein each subset of the at least two subsets corresponds to a candidate resource of the first candidate resource set; and transmitting a physical downlink control channel in the actual resource of the common search space.

Abstract: Embodiments of the present invention provide a bandwidth allocation method and apparatus, user equipment, and a base station. The method includes: receiving, by user equipment, virtual bandwidth configuration information, where the virtual bandwidth configuration information is used for indicating a configuration of a virtual bandwidth; and performing, by the user equipment, signal reception and/or signal processing according to the virtual bandwidth indicated by the virtual bandwidth configuration information, where each virtual bandwidth is a part or all of a downlink maximum available bandwidth or a downlink transmission bandwidth, and the downlink maximum available bandwidth is a maximum bandwidth available for downlink transmission. In the embodiments of the present invention, reduction of overheads and reduction of complexity of signal reception and signal processing are implemented, and overheads and complexity of signal reception and processing feedback can be flexibly controlled.

Abstract: Embodiments of this application provide a call method, an electronic device, a network device, and a system. The system includes a first electronic device and a second electronic device. A first connection is set up between the first electronic device and the second electronic device, the first electronic device is configured with a subscriber identity module (SIM) card having a first number, and the second electronic device is configured with a SIM card having a second number. The second electronic device disables a cellular communication function. The first electronic device receives a first message, where the first message indicates a first incoming call. According to embodiments of this application, missing of an incoming call can be avoided, power can be saved, and the second electronic device does not need to support a multi-terminal with one number service.