Abstract: This application provides a communication method. The method includes: A first communication apparatus obtains first configuration information, and performs carrier aggregation communication on at least two transmit carriers based on the first configuration information. The first configuration information indicates the first communication apparatus to perform carrier aggregation communication on the at least two transmit carriers, the at least two transmit carriers include a first transmit carrier and a second transmit carrier, the first transmit carrier corresponds to a first communication standard, the second transmit carrier corresponds to a second communication standard, and the first communication standard is different from the second communication standard.

Abstract: A method may include: dividing, by a sending device into k code blocks CBs, a TB into which a cyclic redundancy check bit is loaded, then separately performing channel coding on the k CBs, to obtain a bit sequence Sj, where j=1, 2, . . . , and k, and a set S={S1, S2, . . . , Sk}, and mapping, by the sending device, some or all bit sequences in all elements in S to transmission resources in N basic transmission time units, where some or all bit sequences in the Sj are mapped to transmission resources in Mj basic transmission time units, and a last bit in the Sj mapped to an mth basic transmission time unit in the Mj basic transmission time units and a first bit in the Sj mapped to an (m+1)th basic transmission time unit are contiguous in the Sj.

Abstract: Current signaling structures in Long-Term Evolution and New Radio are not designed to accommodate flexible allocation of RF chains and/or antennas among radio access technologies (RATs) and/or between different transmission modes that support multiple transmissions/receptions/component carriers such as carrier aggregation, multiple-input multiple-output and/or multiple-transmit-receive point transmission/reception. Embodiments are disclosed in which an apparatus reports radio frequency (RF) capability information that supports such a flexible allocation of RF chains and/or antennas. In some embodiments, the RF capability information includes RF chain information indicating a number of RF chains operable in a first frequency range, and antenna information indicating, for each of a plurality of second frequency ranges within the first frequency range, a number of physical antennas operable within the corresponding second frequency range.

Abstract: A first access node determines scheduling information, where the scheduling information indicates resource information to be used by a second access node to receive data or send data; and the first access node sends the scheduling information to the second access node.

Abstract: Current frame structures in Long-Term Evolution (LTE) and New Radio (NR) are not designed to accommodate full duplex (FD) communication. Embodiments are disclosed in which frame structures are provided that support FD communication and frequency division duplex (FDD) communication and time division duplex (TDD) communication. In some embodiments, there is defined two separate and independent frame structures: a frame structure for reception (e.g. a downlink frame structure) and a frame structure for transmission (e.g. an uplink frame structure).

Abstract: This application provides a physical layer control information transmission method and apparatus. In the method, a first communication apparatus may obtain first physical layer control information. The first physical layer control information may include N pieces of first information, where N is greater than or equal to 2. The first communication apparatus may obtain target first information from the N pieces of first information. The target first information may indicate a frequency domain resource of a first channel. The first communication apparatus may estimate the first channel based on the target first information. The first communication apparatus may obtain second physical layer control information. The second physical layer control information includes signaling information that may be used by the first communication apparatus to send feedback information corresponding to the first channel.

Abstract: A network device sends indication information to a terminal device, to indicate a reference position of a starting symbol of a data channel. The network device sends a physical downlink control channel to the terminal device. Then the network device sends the data channel to the terminal device, or the network device receives the data channel from the terminal device.

Abstract: This application provides a method and an apparatus for sending an SRS. When receiving first indication information indicating to send an SRS, a terminal device may determine a first time interval in a plurality of candidate first time intervals, where the first time interval is used to determine whether the first indication information is valid, and the terminal device may send the SRS based on the first time interval.

Abstract: Embodiments of this application provide data transmission methods and apparatuses. In an implementation, a method includes: determining information about a first modulation constellation diagram and communicating with a first device based on the first modulation constellation diagram, wherein the first modulation constellation diagram comprises M constellation points, and wherein the information about the first modulation constellation diagram comprises one of: a value range of M1 constellation points in the first modulation constellation diagram, wherein M1 is an integer greater than or equal to 1 and less than or equal to M; offsets of M1 constellation points in the first modulation constellation diagram relative to M1 constellation points in a reference modulation constellation diagram, wherein M1 is an integer greater than or equal to 1 and less than or equal to M; or a rotation phase of the first modulation constellation diagram relative to a reference modulation constellation diagram.

Abstract: The technology of this application relates to a method for determining a feature of a terminal and a communication apparatus. A mandatory feature set in a feature set of a terminal determined by the terminal or a network device is related to a type of the terminal. In this way, a mandatory feature set may be separately defined for different types of terminals. This customizes features of the terminals, helps minimize the features of the terminals, meets feature requirements of the different types of terminals, reduces chip costs and terminal implementation processing complexity, and implements terminal energy saving.

Abstract: The present disclosure relates to communication methods and apparatuses. In one example method, a first access network device determines configuration information, and sends the configuration information to a terminal. The first access network device is connected to a first core network device, and the first core network device uses a first or second communication standard. The configuration information includes status indication information of a first protocol layer (for example, a service data adaptation protocol (SDAP) layer) of the second communication standard, and the status indication information indicates the terminal to perform or not to perform a function of the first protocol layer. The first access network device determines a state of the first protocol layer based on a protocol layer specified in a communication standard of the core network device.

Abstract: Methods and apparatuses for transmission of k repetitions over a channel are described. Repetition formats for the transmissions include options for slot-based repetition, mini-slot based repetition, intra-slot frequency hopping, inter-slot frequency hopping, data splitting, data switching, and DMRS sharing, among others. In some examples, intra-slot frequency hopping is performed. A first repetition of the k repetitions is sent over the channel, starting from a first symbol within a first slot, and using a first set of frequency resources. A second repetition of the k repetitions is sent over the channel, following the first repetition and starting from a second symbol within the first slot, and using a second set of frequency resources.

Abstract: A two stage DCI (downlink control information) scheme is provided in which a first DCI is transmitted by a network device in a first physical downlink control channel (PDCCH), and the first DCI including at least one field indicating presence information of a second DCI in a second PDCCH. A user equipment receives the first DCI using blind detection, and using the presence information, can also obtain the second DCI without needing to perform further blind detection.

Abstract: The present disclosure relates to communication methods and apparatuses. One example method includes receiving configuration information, where the configuration information is used to configure a communication mode, and the communication mode includes a first mode.The example method further includes communicating with an access network device in the first mode.

Abstract: A communication method, apparatus, and system are provided, related to the field of communication technologies. The method includes, the terminal device determines a first value candidate set. The first value candidate set corresponds to a terminal type of the terminal device, and the first value candidate set includes a value candidate set of a radio resource control RRC parameter corresponding to the terminal type. The terminal device receives a first value from the network device. The first value includes a group of RRC parameter values in the first value candidate set. The terminal device performs communication based on the first value.

Abstract: The present disclosure relates to channel state information (CSI) reporting methods and apparatus. When receiving first indication information used to trigger reporting of CSI, a terminal device determines a first time interval from a plurality of candidate first time intervals. The first time interval is used to determine whether the first indication information is valid. The terminal device reports the CSI based on the first time interval.

Abstract: Embodiments of this application disclose mode switching methods and apparatuses. In an example method, a first communication apparatus sends a first signal to a second communication apparatus, where the first signal indicates that the first communication apparatus requests to switch a mode of the first communication apparatus, the mode includes a first mode and a second mode, and there is a correspondence between the mode and a service type of the first communication apparatus.

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: During operation of some wireless communication systems, a user equipment (UE) may monitor a control channel for a downlink notification. An example of a downlink notification is a paging notification. It is desirable to reduce the amount of power consumed when monitoring for downlink notifications. In some embodiments, power savings may possibly be provided by reducing the frequency resources (e.g. bandwidth) over which monitoring for downlink notifications is to occur. In some embodiments, there may be an association between: (i) UE type, capability, and/or service, and (ii) which configuration of resources is used for the monitoring of downlink notifications. In some embodiments, there may be different possible configurations of frequency resources to be used during an initial access procedure, with each configuration possibly having a different bandwidth of frequency resources allocated for the initial access procedure.

Abstract: A timing advance (TA) value is a time offset that may be applied by a UE to compensate for the propagation delay of the UE and thereby cause the UE's uplink transmissions to be time synchronized with the uplink transmissions of other UEs. However, a UE may possibly operate in different states, and in some states (e.g. a power saving state) the UE does not maintain uplink synchronization. If the UE has information to transmit, and the UE is operating in a state in which there is no uplink synchronization, then the overhead of performing uplink synchronization in order to transmit the information must be incurred. Systems and method are instead disclosed for providing TA values to maintain timing synchronization, e.g. even when the UE is in a power-saving state.