Abstract: Disclosed are a communications method and device. The method includes: sending, by a network device, configuration information to a terminal device; determining, by the terminal device, channel state information CSI measurement behavior and/or CSI feedback related information, where the channel state information CSI measurement behavior and/or the CSI feedback related information are/is related to the configuration information; and performing, by the terminal device, CSI measurement based on the configuration information and the CSI measurement behavior and/or the CSI feedback related information, to obtain at least one piece of CSI, and sending all or some of the at least one piece of CSI to the network device. It can be learned that, in a scenario in which a plurality of transmission modes are supported, according to the foregoing method, the terminal device can measure CSI, and feed back the measured CSI to the network device.

Abstract: A method includes: generating, by a first network device, parameter information of a resource in which a channel state information CSI reference signal is located, where the parameter information is used by the second network device to determine one or more of the following information of the resource in which the CSI reference signal is located: subcarrier spacing information, cyclic prefix length information, frame structure time length information, and symbol quantity information; and sending, by the first network device, the parameter information to the second network device.

Abstract: Embodiments of this application disclose an access control method, a communications device, and a base station, so that a UE determines, based on a UAC parameter determined based on a CE-level, whether access of the UE is barred, so that a probability that a UE with a large resource consumption amount accesses a communications network system can be controlled. The method in the embodiments of this application includes: determining, by user equipment UE based on a first coverage enhancement level CE-level, a first unified access control UAC parameter corresponding to the first CE-level; and determining, by the UE based on the first UAC parameter, whether access of the UE is barred.

Abstract: This application discloses a communication method and a communications apparatus, and relates to the communications field, to reduce power consumption of a terminal. The communication method includes: determining, by a first network device, first information, where the first information includes type information of a synchronization signal block, and the type information of the synchronization signal block is used to indicate that the synchronization signal block is a cell-defined synchronization signal block or a non-cell-defined synchronization signal block; and sending, by the first network device, the first information to a second network device. Embodiments of this application are applied to an indication of the cell-defined or non-cell-defined synchronization signal block.

Abstract: A target identification method includes receiving target detection information for a current target from a device, and acquiring target state information of multiple reference targets. A degree of matching between the target detection information and the target state information of each of the multiple reference targets is determined; and the current target is associated with a corresponding reference target having a best degree of matching amongst the multiple reference targets.

Abstract: In accordance with an embodiment, the application discloses a communication method that includes the operations: generating downlink control information DCI; and sending the DCI to a terminal device. The DCI includes indication information used to indicate a single codeword scheduled by using the DCI, or a correspondence between a single codeword scheduled by using the DCI and a first resource. Alternatively, the DCI includes a first number of a hybrid automatic repeat request HARQ process corresponding to a single codeword scheduled by using the DCI, where a quantity of values of the first number is greater than a quantity of values of a second number of an HARQ process used by either one codeword of DCI used to schedule two codewords. In embodiments of the application, a utilization rate of an HARQ buffer can be improved.

Abstract: Example channel transmission methods and apparatus are described. One example method includes determining search spaces of at least two downlink control channels by a first network device. The first network device separately determines in the search spaces resources occupied by the at least two downlink control channels. Resource scheduled by the at least two downlink control channels belong to one carrier. The first network device obtains the at least two downlink control channels by using the resources. With the embodiments of the present invention, data on one carrier can be scheduled through a plurality of downlink control channels.

Abstract: This application provides a communication method and a communications apparatus and system, to help improve transmission reliability. One method includes: obtaining, by a terminal device, a configuration parameter comprising a channel state information (CSI) process feature; and in response to determining that the CSI process feature indicates that further enhancements to coordinated multi-point (FeCoMP) CSI is enabled, sending, by the terminal device uplink control information on a physical uplink channel without sending uplink data on the physical uplink channel.

Abstract: A communication method and a communications apparatus, where the method includes: first determining, by a terminal, a first radio access technology for establishing a Radio Resource Control (RRC) connection; and then determining, by the terminal based on access information, a first cause value for establishing the RRC connection, where the first cause value is a cause value of the first radio access technology, and the access information includes at least one of an access identity (AI), an access category (AC), or a second cause value of a second radio access technology. After the terminal determines the first cause value, the terminal sends a first message used to establish the RRC connection, and uses the first message to carry the first cause value.

Abstract: A method includes: receiving, by a network device, k channel measurement values, k channel measurement resource identifiers, and k interference measurement resource identifiers that are sent by user equipment, where k is an integer greater than or equal to 1, each channel measurement value corresponds to one channel measurement resource identifier and one interference measurement resource identifier, and the channel measurement value is calculated based on the channel measurement resource identifier and the interference measurement resource identifier that correspond to the channel measurement value.

Abstract: Disclosed are a communications method and device. The method includes: sending, by a network device, configuration information to a terminal device; determining, by the terminal device, channel state information CSI measurement behavior and/or CSI feedback related information, where the channel state information CSI measurement behavior and/or the CSI feedback related information are/is related to the configuration information; and performing, by the terminal device, CSI measurement based on the configuration information and the CSI measurement behavior and/or the CSI feedback related information, to obtain at least one piece of CSI, and sending all or some of the at least one piece of CSI to the network device. It can be learned that, in a scenario in which a plurality of transmission modes are supported, according to the foregoing method, the terminal device can measure CSI, and feed back the measured CSI to the network device.

Abstract: Embodiments of this application provide example data transmission methods. One example method includes: receiving, by a receiving device, first data on a first time-frequency resource, and receiving second data on a second time-frequency resource. When the first time-frequency resource and the second time-frequency resource have an overlapped target frequency domain resource in frequency domain, the receiving device can then use a first DMRS mapped to a target frequency domain resource of the first time-frequency resource to demodulate the second data mapped to a target frequency domain resource of the second time-frequency resource.

Abstract: Disclosed are a communications method and device. The method includes: sending, by a network device, configuration information to a terminal device; determining, by the terminal device, channel state information CSI measurement behavior and/or CSI feedback related information, where the channel state information CSI measurement behavior and/or the CSI feedback related information are/is related to the configuration information; and performing, by the terminal device, CSI measurement based on the configuration information and the CSI measurement behavior and/or the CSI feedback related information, to obtain at least one piece of CSI, and sending all or some of the at least one piece of CSI to the network device. It can be learned that, in a scenario in which a plurality of transmission modes are supported, according to the foregoing method, the terminal device can measure CSI, and feed back the measured CSI to the network device.

Abstract: This application provides a communication method, a terminal device, and a network device. The method includes the steps of: receiving, by the terminal device, configuration information, where the configuration information is used to instruct the terminal device to jointly report channel state information (CSI) for at least two groups of channel state information-reference signal (CSI-RS) resources; receiving, by the terminal device, CSI-RSs carried on the at least two groups of CSI-RS resources; and jointly reporting, by the terminal device, CSI based on a result of measuring the CSI-RSs carried on the at least two groups of CSI-RS resources. According to embodiments of this application, transmission performance can be improved.

Abstract: One example method for measuring a channel state information reference signal includes receiving, from a network device, a partial channel state information reference signal resource sets selected from a plurality of channel state information reference signal resource sets and indication information indicating one or more resource sets for channel measurement, which are from the partial channel state information reference signal resource sets, and performing channel measurement by using the one of the one or more resource sets for channel measurement indicated by the indication information.

Abstract: Embodiments of the present invention provide a communication method. A first network device configures power configuration information for each of at least two precoding matrix groups, and sends the power configuration information to a second network device. The power configuration information is used to indicate a power configuration of a corresponding precoding matrix group of the at least two precoding matrix groups, and the at least two precoding matrix groups belong to a same resource used to measure channel state information CSI. When the second network device performs CSI measurement, different power values of different precoding matrix groups can be considered, thereby increasing accuracy of the CSI measurement.

Abstract: A method includes: generating, by a first network device, parameter information of a resource in which a channel state information CSI reference signal is located, where the parameter information is used by the second network device to determine one or more of the following information of the resource in which the CSI reference signal is located: subcarrier spacing information, cyclic prefix length information, frame structure time length information, and symbol quantity information; and sending, by the first network device, the parameter information to the second network device.

Abstract: Embodiments of the present invention provide a channel state information measurement method, including: receiving, by user equipment, configuration information for channel state information measurement from a radio network device, where the configuration information includes information about a resource for channel state information measurement and indicates information about a measurement attribute of the resource, and the measurement attribute includes channel measurement, or X types of interference measurement, or channel measurement and X types of interference measurement, where X is an integer greater than or equal to 1; and measuring, by the user equipment, channel state information based on the configuration information, and feeding back the channel state information. The method is intended to meet different requirements for channel state information measurement in different scenarios of coordinated multipoint in a future network.

Abstract: A target identification method includes receiving target detection information for a current target from a device, and acquiring target state information of multiple reference targets. A degree of matching between the target detection information and the target state information of each of the multiple reference targets is determined; and the current target is associated with a corresponding reference target having a best degree of matching amongst the multiple reference targets.

Abstract: A method includes: generating, by a first network device, parameter information of a resource in which a channel state information CSI reference signal is located, where the parameter information is used by the second network device to determine one or more of the following information of the resource in which the CSI reference signal is located: subcarrier spacing information, cyclic prefix length information, frame structure time length information, and symbol quantity information; and sending, by the first network device, the parameter information to the second network device.