Abstract: This application relates to the mobile communications field, and in particular, to a technology for obtaining a reference signal in a wireless communications system. In one example method for obtaining a reference signal, a terminal device obtains position offset information. The terminal device obtains a first sequence based on the position offset information. The terminal device demodulates, by using the first sequence, a control channel signal carried in a control channel resource set to obtain downlink control information.

Abstract: A communication method for using an unlicensed frequency band is provided. The method includes: A first wireless device receives first indication information in a first time unit, where the first indication information is used to indicate a second wireless device to transmit data in a second time unit, or the first indication information is used to indicate a second wireless device not to transmit data in a second time unit, where the second time unit is a preset time unit used by the second wireless device to transmit data.

Abstract: This application provides a wireless communication method and an apparatus. In the method, a terminal device receives first indication information from a network device. The first indication information indicates a first maximum multiple-input multiple-output (MIMO) layer quantity N to be used by the terminal device when the terminal device performs wireless communication, where N is an integer greater than or equal to 1. The method further includes that the terminal device performs wireless communication with the network device based on the first maximum MIMO layer quantity N, so that the maximum MIMO layer quantity that the terminal device should use can be adjusted as required.

Abstract: The method includes: sending first resource information on a first sidelink transmission channel, where the first resource information indicates a first resource; and receiving indication information on a second sidelink transmission channel, where the indication information indicates at least one second resource in the first resource; or receiving data sent on a second resource, where the second resource is determined based on the first resource.

Abstract: This application discloses a control information sending method, a control information receiving method, an apparatus, and a storage medium, applied to a communication system. The control information sending method includes: sending at least one piece of downlink control information and a corresponding downlink physical shared channel, where the downlink control information carries a count sequence number; and receiving feedback information from user equipment, where the feedback information includes DCI miss-detection information, the count sequence number indicates an accumulated quantity of uplink control information, the uplink control information corresponds to a downlink physical shared channel scheduled by using the downlink control information, and the uplink control information is used to transmit the feedback information.

Abstract: The present disclosure relates to communication methods and communication apparatus. One example method includes determining a quantity and a position of control channel element (CCE) used by a control channel of user equipment, where each of the CCE corresponds to a plurality of resource element groups (REGs), the plurality of REGs form at least one REG bundle, and any REG bundle in the at least one REG bundle includes a plurality of resource blocks (RBs) that are consecutive or adjacent in at least one of time domain or frequency domain, and receiving, from a network device, the control channel by using the CCE.

Abstract: A transmission method is disclosed. A terminal device transmits uplink control information to a network device through a PUSCH when a time domain location of a PUCCH including the uplink control information is between that of DCI and that of a PUSCH; or a time domain location of a PUSCH is before that of a PUCCH, and a time domain length between a time domain location of a PDSCH corresponding to the uplink control information and the time domain location of the PUSCH is greater than or equal to a first time domain length; or a time domain location of a PUSCH is before that of a PUCCH, and a time domain length between a time domain location of a CSI-RS corresponding to the uplink control information and the time domain location of the PUSCH is greater than or equal to a second time domain length.

Abstract: A scheduling request transmission method includes a terminal device that, when a first uplink channel exists in a first time domain range, combines a scheduling request with information included in the first uplink channel to obtain first information, and transmits the first information to a network device. The first time domain range is related to a time domain position of a physical uplink control channel (PUCCH) including the scheduling request, and the first uplink channel is any one of, a PUCCH including a hybrid automatic repeat request (HARQ) feedback, a PUCCH including a channel state information (CSI) report, or a physical uplink shared channel (PUSCH).

Abstract: This application discloses methods an apparatuses for sending and receiving uplink control information in the field of communications technology. In some implementations, a terminal device may receive first downlink control information (DCI) from a network device; determine, based on the received first DCI, that an uplink shared channel scheduled by using the first DCI is used to send only uplink control information (UCI); and send first UCI to the network device through the uplink shared channel scheduled by using the first DCI. In other words, the network device indicates to the terminal device by using DCI so that the terminal device can determine, based on an indication of the network device, whether the uplink shared channel scheduled by using the DCI is used to send only the UCI.

Abstract: The method includes: determine N1 slots based on a physical uplink shared channel, PUSCH resource, wherein the N1 slots are used to send a first redundancy version, RV of a PUSCH, and N1 is an integer greater than 1; send the 1st bit in the first RV on a second slot if the last bit in the first RV is sent on the last bit of a first slot, wherein the first slot is the (n1)th slot in the N1 slots, the second slot is the (n1+1)th slot in the N1 slots, n1=1, 2, . . . , or N1?1; and continuously send bits in the first RV if the last bit sent on the first slot is not the last bit in the first RV, wherein the last bit sent on the first slot and the 1st bit sent on the second slot are two adjacent bits in the first RV.

Abstract: A terminal device receives discontinuous reception DRX configuration information from a network device, where the DRX configuration information includes at least configuration information of a first DRX, and the configuration information of the first DRX includes a cycle length of the first DRX; and determines, based on the DRX configuration information, to receive a downlink signal within at least first onDuration and second onDuration, where the second onDuration is next onDuration of the first onDuration, and a time interval between a start location of the first onDuration and a start location of the second onDuration is greater than the cycle length of the first DRX.

Abstract: A communication method includes: obtaining configuration information, where the configuration information indicates a resource set, the resource set includes a first resource set and/or a second resource set, a resource in the first resource set may be used by a terminal of a first capability type to send a preamble, a resource in the second resource set may be used by a terminal of a second capability type to send a preamble, and the first resource set and the second resource set share at least some resources; selecting a target resource from the resource set, and sending a preamble by using the target resource; then receiving a random access response; and sending first random access information when the shared at least some resources include the target resource, where the first random access information may indicate a capability type of the terminal.

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: This application provides a communication method and a device. The method includes: A first central unit of a network device receives first information from a terminal device, where the first information indicates a type of the terminal device. The first central unit sends second information to a first distributed unit of the network device, where the second information indicates the type of the terminal device.

Abstract: The method includes: receiving, by user equipment UE, supplementary uplink SUL configuration information, wherein the SUL configuration information comprises a plurality of SULs, a plurality of supplementary downlink SDLs respectively matching the plurality of SULs, and SDL measurement configuration information; measuring, by the UE, reference signal strength of the plurality of SDLs based on the SDL measurement configuration information; selecting, by the UE, at least one first SDL from the plurality of SDLs based on the reference signal strength of the plurality of SDLs, and selecting a second SDL from the at least one first SDL, wherein the second SDL has highest reference signal strength in the at least one first SDL; and initiating, by the UE, random access over an SUL corresponding to the second SDL.

Abstract: A channel state measurement method includes: in a time period between two consecutive times of reporting of channel state information (CSI) reports, determining, based on a status of a CSI-reference signal (RS) resource on a second frequency domain resource, whether a CSI report includes CSI of the second frequency domain resource; or during reporting of a CSI report, determining whether reporting has been performed for the second frequency domain resource. If CSI of the second frequency domain resource has been reported in a current discontinuous reception (DRX) cycle, a current CSI report does not include CSI of the second frequency domain resource; otherwise, a CSI report that currently needs to be reported needs to include CSI of the second frequency domain resource. Alternatively, a terminal receives and measures a CSI-RS resource provided that the CSI-RS resource is within an active time of any frequency domain resource.

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 control information sending/receiving method and device are provided, to implement indicating a time-frequency location of a control channel to a terminal device in a 5G NR system or a future evolved LTE system. The method includes: receiving, by a terminal device, broadcast information; determining, from at least two predefined time-domain locations, a time-domain location of a broadcast channel carrying the broadcast information; determining a time-domain location of a control channel based on the time-domain location of the broadcast channel; and performing control channel detection in the determined time-domain location of the control channel.

Abstract: An access network device receives a first cycle from a core network device, where the first cycle is a maximum eDRX cycle that can be configured for a first terminal device, and the first cycle is used by the first terminal device in RRC inactive state. The access network device determines a second cycle based on the first cycle, where the second cycle is an eDRX cycle configured for the first terminal device, the second cycle is used by the first terminal device in RRC inactive state, and a length of the second cycle is less than or equal to a length of the first cycle. The access network device sends a second message to the core network device, where the second message includes the second cycle.

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.