Abstract:
The present invention discloses a method and an apparatus for acquiring downlink quality information, which relate to the communications field and are used to resolve a problem in the prior art that a base station cannot learn interference caused by a UE to a neighboring cell. The method provided in the present invention includes: measuring the downlink quality information; and reporting the downlink quality information to a network-side device. The present invention is applicable to the communications field, and is used for acquiring the downlink quality information by the base station.
Abstract:
This application discloses a carrier status indication method and device, to support carrier activation and deactivation in New Radio (NR) systems. The method includes communicating, by a communications apparatus, with a network device on a first uplink carrier based on a first downlink carrier and receiving, by the communications apparatus, carrier status indication information sent by the network device. The carrier status indication information indicates carrier statuses of M carriers corresponding to N cells that are of the network device and that serve the communications apparatus, and the carrier status includes an activated state and a deactivated state. Flexible carrier activation and deactivation in the NR can be implemented by using the method provided in this application.
Abstract:
This application provides methods and apparatuses for sending a HARQ-ACK feedback codebook. One example method includes detecting DCI in a plurality of time units corresponding to at least one carrier, where a type of the DCI is a first DCI type or a second DCI type, where the first DCI is used to indicate to feed back CBG-level HARQ-ACK information for data scheduled by the first DCI, and where the second DCI is used to indicate to feed back TB-level HARQ-ACK information for data scheduled by the second DCI. A HARQ-ACK feedback codebook is then sent to a network device, where the codebook includes HARQ-ACK information of at least one piece of data scheduled by the DCI, and the HARQ-ACK feedback codebook is determined according to the type of the DCI and a type of the HARQ-ACK feedback codebook.
Abstract:
A network node configured to operate in an unlicensed communication spectrum includes a processor and a transceiver, the processor being configured to determine an identifier for subframe for an uplink control channel transmission, the uplink control channel transmission comprising at least HARQ-ACK information, wherein the subframe for the uplink control channel transmission is a function of at least an index of a subframe in a downlink control channel that is configured to transmit the identifier, and the identifier; and wherein the transceiver is configured to transmit the identifier in the downlink control channel.
Abstract:
Embodiments described provide a data transmission method, a network device, and a terminal device. The method includes: sending, by a network device, control information corresponding to target data to a terminal device on a control resource, where the control resource and a data resource have a correspondence, and the control resource is used by the terminal device to determine the data resource on which the target data is received; and sending, by the network device based on the correspondence, the target data to the terminal device on the data resource. In the embodiments, after sending the control information corresponding to the target data on the control resource, the network device can send the target data on the data resource based on the correspondence between the control resource and the data resource, so that terminal devices having different bandwidth capabilities are able to receive the target data.
Abstract:
A method for determining time information is disclosed. The method includes: obtaining, by a network node, information sent by a terminal device; and determining, by the network node, at least one of the following based on the information: a first time interval between downlink scheduling and downlink data transmission, a second time interval between the downlink data transmission and a feedback message sent by the terminal device after the terminal device receives downlink data, and a third time interval between uplink scheduling and uplink data transmission, where the information may include at least one of a subcarrier spacing, an operating band, and a bandwidth that are supported by the terminal device, and further include a first smallest value and/or a second smallest value and/or a third smallest value corresponding to the at least one item. Therefore, flexibility and accuracy of determining the time information are improved.
Abstract:
An embodiment of this application provides a method for transmission in a time interval. The time interval includes one or more first time units and one or more second time units. The one or more first time units are used to transmit a first-type signal, and a quantity of first time units is associated with a quantity of first-type signals. The one or more second time units are used to transmit a second-type signal. In the method, a receiving node may obtain time unit information, where the time unit information is used to obtain a location of the one or more second time units, that is, determine a time domain location of the second-type time-frequency resource in the time interval. Then, the receiving node may receive or send the second-type signal on the second-type time-frequency resource.
Abstract:
Examples communication methods and communications apparatus are described. In one example method, a base station sends a first synchronization signal block, where the first synchronization signal (SS) block includes a primary SS, a secondary SS, and information carried on a physical broadcast channel (PBCH). In addition, the base station sends a second SS block, where the second SS block includes a primary SS or includes a primary SS and a secondary SS, and does not include information carried on the PBCH. The first SS block is used by a terminal to access the base station. The second SS block is used to perform time and frequency synchronization after the terminal accesses the base station.
Abstract:
An uplink data transmission method includes: receiving, by a terminal, scheduling signaling sent by a network device, where the scheduling signaling indicates at least one frequency-domain discrete structure; determining, by the terminal, the at least one frequency-domain discrete structure based on the scheduling signaling, where a size value of the at least one frequency-domain discrete structure belongs to a set that includes a plurality of size values of frequency-domain discrete structures, the set includes a size value of a first frequency-domain discrete structure and a size value of a second frequency-domain discrete structure or the set includes the size value of the second frequency-domain discrete structure, and the size value of the second frequency-domain discrete structure is less than the size value of the first frequency-domain discrete structure; and initiating, by the terminal, uplink data transmission by using the at least one frequency-domain discrete structure.
Abstract:
A method and an apparatus for determining a time offset are disclosed. The method includes: obtaining, by a device at a head end, a time-domain signal based on a received signal; and then determining a time offset based on values of peak-to-average ratios of a preset quantity of symbols starting from a qth symbol in the time-domain signal, where a peak-to-average ratio of the qth symbol is greater than a preset threshold. A new method for determining a time offset is provided, and takes advantages that the time-domain signal obtained by the device at the head end has stronger capabilities of resisting interference such as frequency offset and phase noise. The method for determining a time offset can be applied both to initial ranging and periodic ranging.