Abstract: Examples in this application provide a communication method, apparatus, device, and system, and a storage medium. One example method includes determining, by a terminal device, that the first data packet of the target service sent by the first network device is not successfully received, sending, by the terminal device, a first message to a second network device, to request to retransmit the first data packet, and receiving, by the terminal device, the first data packet from the second network device.

Abstract: Example communication methods and apparatus are described. One example method includes performing first listen before talk (LBT) and sending a first data packet on a first uplink burst after the first LBT succeeds. A second contention window size is determined based on the first contention window size and a first reference time unit. Second LBT is performed based on the second contention window size. The first contention window size is used for a LBT previous to the second LBT, the first reference time unit is later than the second reference time unit corresponding to the first uplink burst. The first reference time unit is a time unit for determining the second contention window size, or a starting time unit of a second uplink burst corresponding to the second LBT. The second reference time unit corresponding to the first uplink burst is a time unit in the first uplink burst.

Abstract: Embodiments of this application disclose an information transmission method and an apparatus therefor. The method includes: A terminal device sends uplink control information UCI to a network device through an uplink data channel. The uplink data channel carries N data blocks. The N data blocks include a first data block and a second data block. N is a positive integer greater than or equal to 2. The first data block is modulated based on a first modulation and coding scheme MCS, and the second data block is modulated based on a second MCS. Implementation of embodiments of this application helps ensure reliability of downlink data transmission.

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: A method, and related apparatuses are disclosed, to provide an MCS corresponding to a lower code rate. The communication method includes: sending a first CQI number to a network device, wherein the first CQI number is determined based on a first CQI table; and receiving an MCS number in a first MCS table from the network device, wherein the first MCS table comprises an entry that is not comprised in the first CQI table, and at least one entry whose modulation scheme is 64QAM in the first CQI table, wherein a BLER corresponding to the first CQI table is 10e-5, and values obtained by multiplying code rates by 1024 in the first CQI table comprise 30 and 50.

Abstract: Disclosed are a full-automatic high-pressure spray cleaning and rust prevention device and an application method thereof. The device comprises a cleaning platform, a center rod and a swingable clamp module; the center rod is arranged on the cleaning platform, and an upper end is fixedly provided with the swingable clamp module; the swingable clamp module comprises a worm gear and worm assembly and a clamp, and the worm gear and worm assembly is capable of driving the clamp to deflect up and down; a driving mechanism arranged in a bottom portion of the cleaning platform is in driving connection with the center rod, so that the center rod is capable of driving the swingable clamp module to realize vertical lifting motion and rotary station switching; and the cleaning platform is sequentially provided with a positioning and spraying area, an air-drying area and a rust prevention area around the center rod.

Abstract: Embodiments of this application disclose a measurement reporting method and an apparatus, and relate to the field of communication technologies. When a preset condition is met, a terminal device may complete CSI measurement and reporting in shorter time, so that a network device can obtain channel information in a timely manner, and can perform more accurate data scheduling, to improve reliability of service data transmission.

Abstract: A resource mapping method and a communication apparatus include a communication device that determines whether a first information block corresponds to one or more modulation symbols, and determines whether a second information block corresponds to one or more modulation symbols, where the first information block and the second information block are transmitted through a same physical channel, the first information block and the second information block correspond to a total of M modulation symbols, and the physical channel includes N spatial resources. The communication device maps the M modulation symbols to the N spatial resources, where N and M are integers greater than or equal to 2. The modulation symbols obtained by independently coding and modulating the different information blocks are mapped to the plurality of spatial resources of the physical channel.

Abstract: A communication method and apparatus resolve a problem that a terminal device frequently sends channel state information or an uplink reference signal, so that signaling overheads of the terminal device can be reduced. The method includes: determining a first feedback information set, and sending first channel state information or a first uplink reference signal to a network device when the first feedback information set meets a first condition. The first feedback information set includes at least one piece of feedback information, and the feedback information is a negative acknowledgment NACK or an acknowledgment ACK.

Abstract: A communication method includes receiving a configuration information set from a network device, selecting target configuration information from the configuration information set, sending first information to the network device, and sending uplink data to the network device based on the target configuration information. The first information is useable to indicate at least one of the target configuration information or configuration information other than the target configuration information in the configuration information set.

Abstract: This application provides an interference tracking method and an apparatus. A first terminal receives second information from a second network device on a first time-frequency resource, measures interference from the second network device based on the second information, and feeds back first interference information obtained through measurement to a first network device. Because the second information is sent by the second network device (that is, an interference source), the method enables the first terminal to measure interference in a timely manner based on an interference change of the interference source, accurately track an interference change caused by the second network device, and report more accurate interference information to the first network device.

Abstract: This application provides an interference reporting method. A terminal device performs interference measurement on a first time-frequency resource, to obtain an autocorrelation matrix of an interference signal, further determines a first interference parameter based on the autocorrelation matrix of the interference signal, and reports the first interference parameter to a network device. Therefore, the network device can restore the autocorrelation matrix of the interference signal on the terminal device side. This helps the network device perform more accurate downlink data scheduling.

Abstract: This application provides a communication method and apparatus, and relates to the field of communication technologies. A terminal receives first indication information that is sent by a network device and that indicates a time-frequency resource and an MCS of first data, and determines a first time-frequency resource carrying the first data, a second time-frequency resource carrying second data, and an MCS of the second data. The time-frequency resource includes the first time-frequency resource and the second time-frequency resource. In the method, if there are two pieces of data, the terminal may determine time-frequency resources and MCSs of the two pieces of data, to meet different data requirements and flexibly perform data transmission.

Abstract: A communication method, and related apparatuses are disclosed, to provide an MCS corresponding to a lower code rate, so as to better adapt to a requirement of a URLLC service. The communication method includes: determining N MCS indexes in an MCS table, where a value that is obtained by multiplying a code rate by 1024 and that corresponds to an MCS index X in the N MCS indexes is less than or equal to a first threshold, where X is an integer greater than or equal to 0, N is a positive integer, and N is greater than or equal to X; and sending at least one of the N MCS indexes.

Abstract: Embodiments of the present invention provide an uplink control information sending method, an uplink control information receiving method, an apparatus, and a system. The method includes: receiving, by a terminal device, channel indication information from an access network device on a physical control channel; determining the channel resource set that is of N channel resource sets and that matches a type or a size of the UCI as a first channel resource set; determining a channel resource that is in the first channel resource set and that is indicated by the channel indication information; and sending uplink control information UCI to the access network device on the channel resource. A quantity of bits that need to be added to the channel indication information in the embodiments of the present invention is less than that in the prior art.

Abstract: In an interference control method, a first network device sends first indication information to a first terminal device, where the first indication information indicates a first reference signal (RS). The first terminal device obtains, based on measurement on the first RS, first interference information corresponding to the first RS, determines a first transmission parameter based on the first interference information, and sends uplink information to the first network device on a first time-frequency resource based on the first transmission parameter.

Abstract: Embodiments of this disclosure provide a contention window size determining method and apparatus, and relate to the communications field. One method includes: sending, by a first device, one or more data packets to one or more second devices during a reference time unit, wherein the one or more data packets occupy a first subband; receiving, by the first device from the one more second devices, one or more hybrid automatic repeat request-acknowledgements (HARQ -ACKs) corresponding to the one or more data packets; and determining, by the first device, a contention window size of the first subband based on the one or more HARQ-ACKs.

Abstract: This application discloses communication methods and communication apparatuses. A terminal device receives indication information from a network device. The indication information includes one or more indication parameters. The terminal device obtains one or more pieces of configuration information based on the indication parameters. The terminal device performs uplink or downlink data transmission according to the one or more pieces of configuration information. Each pieces of configuration information includes information of a starting location and information of a quantity of time domain symbols in a slot that are occupied by uplink data or downlink data. Each piece of configuration information is selected from a first set of configuration information or a second set of configuration information.

Abstract: A communication method and apparatus. Different frame structures are configured for different frequency domain resources in a dual-spectrum scenario. A network device sends information for configuring a first frequency domain resource and a second frequency domain resource to a terminal device, where the first frequency domain resource corresponds to a frame structure A, the second frequency domain resource corresponds to a frame structure B, the frame structure A is different from the frame structure B, and the first frequency domain resource and the second frequency domain resource are two different bandwidth parts BWPs on a first component carrier, or the first frequency domain resource and the second frequency domain resource are two different subbands in a first BWP. The terminal device performs first transmission on the first frequency domain resource and/or the second frequency domain resource.

Abstract: Embodiments of the present invention provide a detecting method, a transmitting method and an apparatus for a common control channel. The detecting method includes: determining a candidate resource set within virtual downlink resources of a current cell. The candidate resource set can include at least one candidate resource carrying a common control channel of the current cell. A detection is performed on at least one candidate resource in the candidate resource set, so as to acquire the common control channel of the current cell. In the embodiments of the present invention, a selection range of resources for transmitting a common control channel is extended, so that inter-cell interference of the common control channel can be coordinated, and a detection performance of the common control channel can be improved.