Abstract: This disclosure relates to a communication method and a device. When a terminal device determines not to monitor DCP on a first DCP monitoring occasion, the terminal device wakes up on a first group of carriers within first DRX on duration associated with the first DCP monitoring occasion, and wakes up or sleeps on a second group of carriers within second DRX on duration associated with the first DCP monitoring occasion. The first group of carriers includes one or more carriers configured for the terminal device, a first DRX configuration is applied to the first group of carriers, the first DRX on duration corresponds to the first DRX configuration, the second group of carriers includes one or more carriers configured for the terminal device, a second DRX configuration is applied to the second group of carriers, and the second DRX on duration corresponds to the second DRX configuration.

Abstract: A communications device determines index values of n first control channel elements (CCEs) occupied by a physical downlink control channel (PDCCH) candidate in a control resource set (CORESET) in a first CCE set and index values of m second CCEs occupied by the PDCCH candidate in the CORESET in a second CCE set. The CORESET is divided into a first second physical time-frequency resource area and a second physical time-frequency resource area. The first physical time-frequency resource area is different from the second physical time-frequency resource area in time domain and/or frequency domain. A quantity of CCEs included in the first CCE set is determined based on a quantity of resource element groups (REGs) included in a first physical time-frequency resource. A quantity of CCEs included in the second CCE set is determined based on a quantity of REGs included in a second physical time-frequency resource.

Abstract: Embodiments of this application disclose a random access method and a terminal, applied to the communication field, to improve uplink coverage in high frequency band communication systems such as 5G and 6G communication systems. The method in embodiments of this application includes: A network device configures a plurality of SULs in one cell, where the plurality of SULs are used to supplement uplink coverage of the cell; the network device sends configuration information of the plurality of SULs to a terminal device; and after receiving the configuration information, the terminal device may select one SUL used for random access from the plurality of SULs based on the configuration information. In embodiments of this application, because the cell includes the plurality of SULs, a requirement that a large quantity of terminals in the cell can access a network can be met, and a success rate of uplink random access by the plurality of terminals is improved.

Abstract: A data transmission method includes: The terminal obtains quality of a channel between the terminal and the access network device; and determines to send the uplink data in a random access manner (a 2-step random access manner or a 4-step random access manner) or a CG manner when the channel quality is greater than a first threshold; or sends the uplink data in the 2-step random access manner or the CG manner when the channel quality is greater than a sixth threshold; or sends uplink data in the 4-step random access manner when the channel quality is less than a sixth threshold. The solutions of this application may be widely applied to the fields of communication technologies, artificial intelligence, Internet of Vehicles, Internet of Smart home, and the like.

Abstract: A carrier configuration method and a related device are provided. A first carrier and a second carrier are configured for an electronic device, and the second carrier is a supplementary uplink carrier of the first carrier. The method includes: The electronic device receives a first message, where the first message includes configuration information of a secondary cell, and the secondary cell includes at least a serving cell corresponding to the second carrier. The electronic device configures, based on the configuration information of the secondary cell, the serving cell corresponding to the second carrier. That the serving cell corresponding to the second carrier is configured includes: An uplink of the second carrier remains as a supplementary uplink of the first carrier, or the supplementary uplink of the second carrier is deactivated, or an uplink of the second carrier is aggregated with an uplink of the first carrier.

Abstract: A frequency domain resource activation method, a device, and a system, the method including determining, by a terminal, first information, where the first information includes at least one of information used to request that an access network device configure or activate a frequency domain resource unit of the terminal, or first assistance information of a frequency domain resource unit of the terminal, and where the frequency domain resource unit is a bandwidth part (BWP), and sending, by the terminal, the first information to the access network device.

Abstract: This specification discloses a paging method and an apparatus. A terminal receives, before a paging occasion of the terminal, a first paging indication sent by a network device, where the first paging indication includes a first field, the first field is used to indicate whether paging is sent on R paging occasions, the R paging occasions include the paging occasion of the terminal, and R is an integer greater than or equal to 1. The terminal determines, based on a first paging occasion, whether to monitor DCI on the paging occasion of the terminal.

Abstract: An uplink signal transmission method includes: receiving, by a terminal device, first information that is sent by a network device and that is used to instruct the terminal device to send an SRS on at least two symbols in a first slot, and second information that is sent by the network device and that is used to instruct the terminal device not to send the SRS on M symbols in the at least two symbols, where M is an integer greater than 0; and sending, by the terminal device based on the received first information and the received second information, the SRS on a symbol that is in the at least two symbols and that is different from the M symbols.

Abstract: A configuration method includes receiving, by a terminal device, configuration information from a network device, where the configuration information includes a first discontinuous reception (DRX) parameter and a second DRX parameter, and communicating, by the terminal device, with the network device on a first bandwidth part (BWP) using the first DRX parameter or on a second BWP using the second DRX parameter.

Abstract: The application discloses a method including: determining, by a terminal device, first indication information, wherein the first indication information is used to indicate one or more first transmit powers of the terminal device, and the first transmit power is a transmit power corresponding to a phase jump of an uplink signal of the terminal device; and sending, by the terminal device, the first indication information to a network device.

Abstract: A measurement method includes obtaining, by a terminal device, a plurality of pieces of information including first information and/or second information, where the first information is used to indicate that at least one quality value of a radio link between the terminal device and a network device is less than or equal to a first threshold, and the second information is used to indicate that the at least one quality value of the radio link between the terminal device and the network device is greater than or equal to a second threshold; and determining, based on the first information and/or the second information, whether to perform radio link monitoring (RLM) measurement relaxation.

Abstract: A method includes: when a band, in which a supplemental uplink (SUL) carrier is located, multiplexes a time-division duplex (TDD) band or a low-frequency frequency-division duplex (FDD) band, M time domain resources used by a terminal device to perform SUL transmission is determined from N time domain resources included in the SUL carrier, and indication information that indicates the M time domain resources is sent to the terminal device such that the terminal device can send an uplink signal and/or an uplink channel using the M time domain resources. Further, a network device may configure an available time domain resource used for uplink transmission for the SUL carrier using a system information block (SIB), Radio Resource Control (RRC) dedicated signaling, or download control information (DCI)/media access control (MAC) control element (CE).

Abstract: A negative electrode current collector includes a first metal layer, a second metal layer, and a prelithiation layer disposed between the first metal layer and the second metal layer. At least one of the first metal layer or the second metal layer has a porous structure.

Abstract: A communications method includes a terminal device receives broadcast information sent by a network device, where the broadcast information includes first information indicating N configuration parameters and a plurality of pieces of second information indicating Mi configuration parameters. Then, the terminal device determines configuration information of an ith reference signal based on some or all of the configuration parameters indicated by the first information and the Mi configuration parameters indicated by the ith piece of second information, where the configuration information of the ith reference signal includes Qi configuration parameters, and Qi is greater than or equal to N, and Qi is greater than or equal to Mi. The method reduces signaling overheads of the broadcast information.

Abstract: A communications method and apparatus implement radio frequency link sharing, improve radio frequency link utilization, and increase an uplink transmission rate. The method is as follows: a terminal receives first configuration information and second configuration information from a first network device. The first configuration information is used to indicate a first reference signal resource of a first antenna port, and the second configuration information is used to indicate a second reference signal resource of a second antenna port; or the first configuration information is used to indicate a third reference signal resource of a first quantity of antenna ports, and the second configuration information is used to indicate a fourth reference signal resource of a second quantity of antenna ports. The terminal sends a first reference signal based on the first configuration information and sends a second reference signal based on the second configuration information.

Abstract: A communications method includes: when a terminal device is in a non-connected state, a system information block is received from a network device, where the system information block includes first information; and configuration of a reference signal used for operations such as automatic gain control (AGC) adjustment and time and frequency synchronization can be known based on the first information. In this way, the terminal device can wake up at a location of a first reference signal to prevent terminal device from waking up too early at a location of a synchronization signal block and to effectively reduce power consumption of the terminal device.

Abstract: A bandwidth part processing method includes receiving, by a terminal, a first information and a second information from a network device. The first information indicates that at least one default bandwidth part (BWP) corresponds to at least two active BWPs, the second information indicates that the at least two active BWPs correspond to at least one first timer, and the at least one first timer is useable by the terminal to perform deactivation processing on at least one of the at least two active BWPs. The method further includes performing, by the terminal, deactivation processing on the at least one of the at least two active BWPs, and activation processing on a BWP in the at least one default BWP based on the first and second information, or performing deactivation processing on the at least one of the at least two active BWPs based on the first and second information.

Abstract: This application provides a base station switching method and an apparatus. The method includes: A terminal sends one piece of binding signaling that carries SIM card binding information to a source base station; the terminal switches a plurality of SIM cards from being connected to the source base station to being connected to the target base station; and the terminal sends radio resource control reconfiguration complete information to the target base station, where the radio resource control reconfiguration complete information includes information about the plurality of SIM cards that complete the switching operation.

Abstract: A communications method and apparatus to implement radio frequency link sharing, improve radio frequency link utilization, and increase an uplink transmission rate. The method includes a terminal that receives first configuration information and second configuration information from a first network device. The first configuration information is used to indicate a first reference signal resource of a first antenna port, and the second configuration information is used to indicate a second reference signal resource of a second antenna port; or the first configuration information is used to indicate a third reference signal resource of a first quantity of antenna ports, and the second configuration information is used to indicate a fourth reference signal resource of a second quantity of antenna ports. The terminal sends a first reference signal based on the first configuration information and sends a second reference signal based on the second configuration information.

Abstract: This application provides an information transmission method and apparatus. The method includes: generating, by a network device, first information; and sending, by the network device, the first information to a terminal device, where the first information is used to instruct the terminal device to detect at least one group common PDCCH on N component carriers CCs, N is a positive integer and is less than or equal to M, M is a quantity of CCs configured for the terminal device, and M is a positive integer. Based on this, after receiving the first information, the terminal device detects the at least one group common PDCCH on the N CCs according to the first information.