Abstract: A first access network device sends indication information to a second access network device within a first time segment of a first subframe. The first subframe includes a second time segment and the first time segment, the second time segment is used by the first access network device to communicate with a first terminal device, the indication information includes first information, and the first information indicates a communication type of the first access network device within a first target time segment of a second subframe. The first access network device further communicates with a second terminal device or the first terminal device based on a communication type indicated by the first information within the first target time segment. The second access network device can detect a signal interference status in time, and the second access network device can use an interference coordination technology in time.

Abstract: A terminal receives configuration information of a first reference signal from a network device; and sends, based on the configuration information, uplink signals to the network device in at least two time units, wherein the uplink signals each comprise uplink data and the first reference signal, the at least two time units comprise a first time unit and a second time unit, the first time unit is adjacent to and located before the second time unit, the first reference signal is carried on the first N symbols in symbols that are in the second time unit and on which the uplink signal is located, the first reference signal is carried on the last M symbols in symbols that are in the first time unit and on which the uplink signal is located, and N and M are integers greater than or equal to 1.

Abstract: A communication method and an apparatus are provided. The method includes: receiving, by a terminal device, downlink control information (DCI) from a network device on a first downlink carrier; and determining a first uplink carrier or a second uplink carrier based on the DCI, where the DCI indicates an uplink carrier to be used by the terminal device to send an uplink signal to the network device is the first uplink carrier or the second uplink carrier; the DCI for indicating the first uplink carrier and the DCI for indicating the second uplink carrier having equal bit quantity; and the first downlink carrier, the first uplink carrier, and the second uplink carrier belong to a same cell.

Abstract: This application provides an information transmission method and apparatus. The method includes: sending, by a network device, first information, where the first information indicates a first parameter, and the first parameter is at least one of 237, 216, 195, 173, 152, 137, 132, 127, 121, 117, 112, 108, 103, 99, 94, 91, 89, 86, 84, 81, 77, 74, 72, 69, 68, 67, 66, 64, 63, 62, 61, 59, 58, and 57, or at least one of 153, 137, 122, 109, 97, 85, 81, 77, 74, 71, 68, 65, 63, 60, 57, 55, 53, 51, 50, 48, 47, and 45. According to the information transmission method and apparatus provided in this application, information used to generate a random access preamble sequence can be configured for a terminal device.

Abstract: In various embodiments, a first carrier and a second carrier occupying different frequencies can be determined by a terminal device. A working state on the first carrier and a working state on the second carrier can be determined by the terminal device as a first working state, and a second working state, respectively. The first working state indicates the terminal device is capable of sending a first signal including at least one of an uplink data signal and an uplink control signal, and the second working state indicates the terminal device is incapable of sending the first signal. First indication information can be received by the terminal device from a network device. Based on the first indication information, the terminal device can determine that the working state on the first carrier is the second working state, and the working state on the second carrier is the first working state.

Abstract: This application relates to a communication method, a communication apparatus, a terminal device, and a network device. The terminal device receives first signaling from the network device, where the first signaling indicates the terminal device to send a first uplink signal to the network device on a first uplink carrier, and the first signaling further indicates a first frequency. Further, the terminal device sets an operating frequency of the terminal device based on the first frequency after sending the first uplink signal on the first uplink carrier; or the terminal device sets an operating frequency of the terminal device based on the first frequency before an end moment of a time unit in which the first uplink signal is located.

Abstract: A communication method and apparatus are provided. The method includes: A terminal device determines a first transmission time period and a second transmission time period, where the first transmission time period includes X1 time units, the second transmission time period includes X2 time units, and the first transmission time period does not overlap the second transmission time period. The terminal device sends a first reference signal in the first transmission time period and a first uplink signal in the second transmission time period, where the first uplink signal includes at least one of a PUSCH, a PUCCH, or a DMRS. Therefore, the terminal device may additionally send the first reference signal, to improve uplink channel estimation performance of a network device. This improves coverage performance of a communication system.

Abstract: Embodiments of this application provide a data transmission method, an apparatus, and a system. The method includes: A terminal device determines first transmission time, and sends uplink data at a first power within the first transmission time. Correspondingly, a network device determines the first transmission time, and receives the uplink data within the first transmission time. Second transmission time includes the first transmission time, the first transmission time includes N1 time units, the second transmission time includes N2 time units, N1 is a positive integer, and N2 is a positive integer greater than N1.

Abstract: This application relates to a communication method and a communications device. The communication method includes: determining, a first signal to be sent on a first uplink carrier; determining a second signal to be sent on a second uplink carrier, where the first uplink carrier corresponds to a first radio access technology, and the second uplink carrier corresponds to a second radio access technology; and when a first transmission timing corresponding to the first signal is different from a second transmission timing corresponding to the second signal, and if the first signal and the second signal overlap in time domain, sending, a third signal, where the third signal is the second signal, or is the second signal or a part of the first signal, where the part of the first signal is carried on a symbol that does not overlap with a symbol corresponding the second signal.

Abstract: Embodiments of this application provide a communication method and a network device. The method includes: determining, by a network device, that a resource corresponding to at least one DMRS port of a plurality of DMRS ports of the network device is not used to transmit a DMRS in a first time segment; determining, by the network device, a first resource used to carry, in the first time segment, first data information to be sent to a terminal device, where the first resource includes the resource that is corresponding to the at least one DMRS port and that is not used to transmit the DMRS; sending, by the network device, indication information of the first resource to the terminal device; determining, by the terminal device based on the received indication information of the first resource, the first resource used to carry the first data information in the first time segment.

Abstract: A signal receiving method, an apparatus and a communication system. The network device determines a subcarrier location of a to-be-sent first signal and a subcarrier location of a to-be-sent second signal, where subcarriers occupied by the first signal are continuous subcarriers in a first group of resource elements, subcarriers occupied by the second signal are continuous subcarriers in a second group of resource elements, a quantity of the subcarriers occupied by the first signal is the same as a quantity of the subcarriers occupied by the second signal, and a subcarrier spacing in the first group of resource elements is different from a subcarrier spacing in the second group of resource elements, the first signal and the second signal are primary synchronization signals. The network device sends the first signal to the terminal device and sends the second signal to the terminal device or other terminal device.

Abstract: Embodiments of this application provide a maximum transmission power determining method, an apparatus, a system, and a storage medium. A network device configures, for a terminal device that works in a DC mode but does not support dynamic power sharing, power information corresponding to a first time unit and power information corresponding to a second time unit when a first radio access technology is used, and correspondingly, the terminal device determines maximum transmission power corresponding to the first time unit and maximum transmission power corresponding to the second time unit.

Abstract: A radio node and a UE are described, and methods and computer programs therein to handle separate aperiodic CSI reports for one or more static subframes, in which the direction of signal transmission is fixed, and one or more flexible subframes, in which the direction of signal transmission is variable. The method performed by a UE comprises receiving a trigger for an aperiodic CSI report as part of an uplink grant from a radio node in a static downlink subframe, said trigger indicating a CSI subframe set related to the one or more static subframes. The method further comprises reporting to the radio node, in a CSI reporting subframe, a result of an aperiodic CSI measurement for a CSI reference in the CSI subframe set. The method further comprises receiving a second trigger that relates to the one or more flexible subframes and reporting the results to the radio node.

Abstract: Embodiments provide an information sending method, an information receiving method, a network device, and a terminal device, to enable the terminal device to determine a correct uplink transmission time, thereby avoiding an uplink transmission failure. For achieving this, a network device determines a first receiving start time and a first sending start time. The first receiving start time is a receiving time at which the network device starts to receive a signal in a first time period, and the first sending start time is a sending time at which the network device starts to send a signal in a second time period. The network device sends indication information to a terminal device to instruct the terminal device to determine a second sending start time. The second sending start time is determined based on the first receiving start time and the first sending start time.

Abstract: A communication method and a communications apparatus are provided, to resolve a problem of how to send and receive a remote interference management reference signal (RIM-RS) during remote interference measurement. The method includes determining a transmission resource of a reference signal based on identification information and parameter information, where the transmission resource includes one or more of a sequence, a frequency domain resource, and a time domain resource of the reference signal, the identification information is used to identify a network device, the parameter information includes sequence indication information and frequency domain indication information, the sequence indication information is used to indicate one or more candidate sequences, and the frequency domain indication information is used to indicate one or more candidate frequency domain resources. The method may further include sending the reference signal on the transmission resource.

Abstract: A communication method includes determining, by a network device, a first signal. The first signal includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a first physical broadcast channel PBCH. A frequency domain bandwidth occupied by the PSS, the SSS, and the first PBCH is less than 240 subcarriers. The PSS, the SSS, and the first PBCH are mapped to different time-domain symbols. The method also includes sending, by the network device, the first signal.

Abstract: A radio node and a UE are described, and methods and computer programs therein to handle separate aperiodic CSI reports for one or more static subframes, in which the direction of signal transmission is fixed, and one or more flexible subframes, in which the direction of signal transmission is variable. The method performed by a UE comprises receiving a trigger for an aperiodic CSI report as part of an uplink grant from a radio node in a static downlink subframe, said trigger indicating a CSI subframe set related to the one or more static subframes. The method further comprises reporting to the radio node, in a CSI reporting subframe, a result of an aperiodic CSI measurement for a CSI reference in the CSI subframe set. The method further comprises receiving a second trigger that relates to the one or more flexible subframes and reporting the results to the radio node.

Abstract: Example random access methods and apparatus are described. In one example method, a terminal device receives a system message that is sent by a network device on a first downlink carrier. The system message includes first information for performing random access on a first uplink carrier and second information for performing random access on a second uplink carrier. A frequency of the first uplink carrier is higher than a frequency of the second uplink carrier, and a frequency of the first downlink carrier is the same as the frequency of the first uplink carrier. The terminal device sends a random access request message on the first uplink carrier or on the second uplink carrier, and receives a random access response message that is sent by the network device on the first downlink carrier.

Abstract: Embodiments of this application provide a communication method and a network device. The method includes: determining, by a network device, that a resource corresponding to at least one DMRS port of a plurality of DMRS ports of the network device is not used to transmit a DMRS in a first time segment; determining, by the network device, a first resource used to carry, in the first time segment, first data information to be sent to a terminal device, where the first resource includes the resource that is corresponding to the at least one DMRS port and that is not used to transmit the DMRS; sending, by the network device, indication information of the first resource to the terminal device; determining, by the terminal device based on the received indication information of the first resource, the first resource used to carry the first data information in the first time segment.

Abstract: Embodiments of this application provide an information sending method and an information receiving method. A network device receives a random access signal of a terminal device from the terminal device on a random access resource, where the random access resource is on a first uplink carrier or a second uplink carrier, and the first uplink carrier and the second uplink carrier are corresponding to a same downlink carrier; the network device determines a random access identifier corresponding to the random access resource according to a time-frequency resource sequence number of the random access resource and a carrier identifier of a carrier on which the random access resource is and the network device generates a random access response based on the determined random access identifier, and sends the random access response to the terminal device via the downlink carrier.