Huawei Technologies Co., Limited

Hongzhe Shi

Xiaoyan Bi

Shibin Ge

Liuliu Ji

Haicun Hang

Wei Han

Jianqin Liu

Huangping Jin

Xiaohan Wang

Jin Liu

Ye Wu

Min Zhang

Jun Luo

Yong Liang Liu

Yi Qin

Peng Guan

Peng Jiang

Lu Wu

Xi Zhang

Huang Huang

Di Zhang

Yinggang Du

Yiqun Wu

Yong Liu

Xiang Ren

Dageng Chen

Zhitang Chen

Min Cheng

Jing Liang

Mingzhe Wang

Wenkai Zhang

Xiaoyan Bl

Xioyan Bi

A communication method and apparatus. A terminal device determines channel state information based on S indexes of S vectors. Each of the S vectors is included in a first vector quantization dictionary. The first vector quantization dictionary includes Nvectors, where Nand S are both positive integers. The terminal device sends the channel state information to a network device. Because a vector included in the vector quantization dictionary usually has a relatively large dimension, quantizing channel information by using the first vector quantization dictionary is equivalent to performing dimension expansion on the channel information or maintaining a relatively high dimension. High-precision feedback is implemented by using relatively low signaling overheads.

Communication method and apparatus

A power control method and apparatus are disclosed. The method is applied to a terminal that has a capability of supporting a configuration with a plurality of control resource set pool indexes and/or that is configured with the plurality of control resource set pool indexes. The method includes receiving a first physical downlink control channel (PDCCH) sent by a network device, where the first PDCCH carries a power offset corresponding to a physical uplink shared channel (PUSCH). The method further includes determining a transmit power based on a power control process corresponding to the network device, where the power control process is used for accumulating power offsets indicated by the network device, and determining the transmit power for the PUSCH based on an accumulation result. The method further includes sending the PDCCH to the network device at the transmit power.

Power control method and apparatus

A method and apparatus are provided for determining a transmission mode. A method embodiment includes obtaining, by a terminal device, configuration indication information, the configuration indication information comprising one or more of: DMRS indication information, repeated-transmission indication information, or transmission configuration indication information; and determining a transmission mode based on the configuration indication information, the transmission mode is one or more of: a space division multiplexing mode, a frequency division multiplexing mode, or a time division multiplexing mode.

Method for determining transmission mode and apparatus

Example frequency domain resource allocation methods and apparatus are described. One example method includes determining M frequency domain resources according to a predetermined frequency domain resource allocation rule, and performing communication on one or more of the M frequency domain resources. Any two of the M frequency domain resources do not overlap. Each of the M frequency domain resources is associated with one piece of quasi-colocation (QCL) information, and any two of the M frequency domain resources are associated with different QCL information.

Frequency domain resource allocation method and apparatus

This disclosure provides a communication method to implement a function of a hybrid automatic repeat request (HARQ) feedback codebook in a multi-station scenario. A terminal device receives a configuration group identifier, determines a physical downlink shared channel (PDSCH) reception occasion corresponding to the configuration group identifier, and transmits feedback information of the PDSCH reception occasion based on the configuration group identifier corresponding to the PDSCH reception occasion and according to a predetermined rule of feedback sorting.

Communication method and communications apparatus

Example communication methods and communications apparatus are described. One example method include: receiving downlink control information (DCI), where the DCI indicates N demodulation reference signal (DMRS) ports. The N DMRS ports correspond to each of M physical downlink shared channel (PDSCH) transmission units, at least two of the M PDSCH transmission units correspond to different transmission configuration indicator (TCI)-states, N is an integer greater than or equal to 1, and M are integers greater than or equal to 2. M PDSCHs are received based on the DCI.

This application provides a data transmission method and a communication apparatus, to improve data transmission reliability. The method includes: receiving downlink control information (DCI); determining a plurality of pieces of quasi-co-location (QCL) information based on the DCI; and receiving downlink data based on the plurality of pieces of QCL information. The plurality of pieces of QCL information correspond to a plurality of time domain units, each time domain unit corresponds to at least one piece of QCL information, and at least two of the plurality of pieces of QCL information are different, that is, the downlink data is from at least two network devices.

Data transmission method and communication apparatus

Embodiments of this application provide a downlink control information transmission method in which after receiving one piece of downlink control information (DCI), the terminal device learns whether blind detection of DCI needs to be continued. The method includes: A terminal device receives first DCI, where the first DCI includes first indication information, and the first indication information is used to indicate a first antenna port. The terminal device determines, based on the first antenna port and antenna port configuration information, whether second DCI exists. The configuration information may include an index of a CDM group to which each of a plurality of antenna ports belongs and a maximum quantity of CDM groups that is supported by the terminal device. Alternatively the configuration information may include one or more antenna port groups, and each of the one or more antenna port groups includes one or more antenna ports.

Downlink control information transmission method, apparatus, and system

A beam reporting method and a communications apparatus is provided. The method includes that a terminal device receives first information, where the first information is used to configure at least two reference signal resource groups; and sending, by the terminal device, reporting information, where the reporting information includes related information of at least two beams, the at least two beams are used to send reference signals carried on at least two reference signal resources, and the reference signals sent by using the at least two beams can be simultaneously received by the terminal device, where the at least two reference signal resources are respectively from the at least two reference signal resource groups. In this application, related information of beams of at least two transmission points is reported through one time of beam scanning, to implement beam training in a CoMP system.

Beam reporting method and communications apparatus

This application provides a channel measurement configuration method and a communications apparatus. The method includes: receiving, by a terminal device, a measurement configuration, where the measurement configuration includes a plurality of resource settings, and the plurality of resource settings include a plurality of resource settings for channel measurement and a plurality of resource settings for interference measurement; receiving, by the terminal device, channel state information reference signals CSI-RSs on resources configured in the plurality of resource settings; and generating, by the terminal device, a CSI group based on the CSI-RSs, where the CSI group includes one or more pieces of CSI. In embodiments of this application, a plurality of resource settings for channel measurement and a plurality of resource settings for interference measurement are associated in one report setting.

Channel measurement configuration method and communications apparatus

Embodiments of this application provide data transmission methods and apparatuses. One method includes: receiving, by a communications apparatus, indication information from a network device, wherein the indication information indicates a data distribution selected from a first data distribution and a second data distribution; performing, by the communications apparatus, data transmission with the network device based on the data distribution; wherein the data distribution indicates a distribution of modulation symbols of a code block (CB) on one or more orthogonal frequency division multiplexing (OFDM) symbols of at least one resource unit, and wherein the one or more OFDM symbols are consecutive in time-domain.

Data transmission method and apparatus

The application provides a beam training method and a communications apparatus. The method includes: generating, by a terminal device, capability indication information, where the capability indication information is used to indicate that the terminal device can support simultaneous beam training in a maximum of N frequency bands, and N is an integer greater than or equal to 1; and sending, by the terminal device, the capability indication information. In this way, the network device may select a plurality of frequency bands at a time based on a capability of the terminal device to simultaneously perform beam training. Therefore, in an embodiments of this application, when the quantity N, of frequency bands for simultaneous training, supported by the terminal device is greater than 1, beam training may be simultaneously performed between the network device and the terminal device in a plurality of frequency bands.

Beam training method and communications apparatus

This application discloses communication methods and apparatuses. One method includes: receiving, by a terminal device, a reference signal from a beam of a network device; determining, by the terminal device, availability of the beam based on a threshold and the reference signal; and sending, by the terminal device, feedback information to the network device, wherein the feedback information indicates the availability of the beam.

This disclosure relates to a communication method and apparatus. The method includes: receiving, by a terminal device, a reference signal sent by a network device; measuring the reference signal to obtain at least one piece of beam quality; and reporting specified differential beam quality indication information to the network device, where the specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal, and/or the specified differential beam quality indication information is used to indicate that beam quality corresponding to the specified differential beam quality indication information is a specified value. A corresponding apparatus is further disclosed. According to the solution in this disclosure, specified differential beam quality indication information is used to indicate that beam quality reporting is abnormal or indicate that beam quality is a specified value, so that beam quality can be accurately reported.

Communication method and apparatus for indicating beam quality

This application provides a channel quality information reporting method, a terminal device, and a network device. The reporting method includes: receiving, by a terminal device, a first reference signal and a second reference signal that are sent by a network device; receiving, by the terminal device, first indication information sent by the network device, where the first indication information includes a quasi co-location (QCL) assumption relationship between the second reference signal and the first reference signal; and reporting, by the terminal device, second channel quality information to the network device based on the QCL assumption relationship, where the second channel quality information is channel quality information for the second reference signal. According to this application, resource overheads for reporting channel quality information can be reduced.

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Shanghai, China

Hongzhe Shi