Abstract: This application disclose a method for indicating and determining a precoding vector related to precoding technologies to increase an overall system performance gain. The method may include: generating indication information, and sending the indication information. The indication information is used to indicate a plurality of component vectors of a precoding vector and a combination coefficient of each component vector. The combination coefficient of the component vector includes at least one of the following types: a wideband amplitude coefficient, a narrowband amplitude coefficient, and a narrowband phase coefficient.

Abstract: This application describes a data transmission method, a terminal device, and a network device. The method may include determining, by a terminal device, a reporting type of channel state information (CSI), where the reporting type is used to indicate a relationship between CSI of a beam that is currently reported by the terminal device and CSI of a beam that is previously reported by the terminal device in a current reporting period. The method may also include sending, by the terminal device, CSI of N beams to a network device based on a reporting type and a codebook parameter, where the codebook parameter is used to indicate a quantity N of the currently reported beams, and N is an integer greater than or equal to 1. According to the data transmission method, the terminal device, and the network device described in the embodiments of this application, CSI reporting flexibility can be improved, thereby improving system performance.

Abstract: This application disclose a method for indicating and determining a precoding vector related to precoding technologies to increase an overall system performance gain. The method may include: generating indication information, and sending the indication information. The indication information is used to indicate a plurality of component vectors of a precoding vector and a combination coefficient of each component vector. The combination coefficient of the component vector includes at least one of the following types: a wideband amplitude coefficient, a narrowband amplitude coefficient, and a narrowband phase coefficient.

Abstract: A radio access node (RAN) and method of operation of the RAN are provided. The RAN includes a massive multiple-input-multiple-output (MIMO) antenna array. The RAN includes a processing hardware configured to carry out a communication method that includes receiving a digital data stream for transmission on a time-frequency resource. The RAN precodes the digital data stream using a digital beamforming stage to render a precoded digital downlink data stream for downlink data stream signal transmission to a user equipment. The digital beamforming stage includes a first precoding stage configured according to a long-term matrix, and a second precoding stage configured according to a short-term matrix. The RAN is further configured to generate a downlink data stream transmission signal to the user equipment in accordance with the precoded digital downlink data stream.

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2, an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

Abstract: Embodiments can provide a precoding matrix indicating method, a precoding matrix determining method, a receive end device, and a transmit end device. In the precoding matrix indicating method, component matrices of an ideal precoding matrix and a weight of each component matrix can be determined based on at least one basic codebook. A dimension of each component matrix is the same as a dimension of the ideal precoding matrix, and a column vector of each component matrix is selected from column vectors of one of the at least one basic codebook. A precoding matrix indicator can be sent. The precoding matrix indicator can indicate the component matrices and the weight of each component matrix. With this, an ideal precoding matrix is approximately represented in a form of a weighted sum of a plurality of component matrices so that feedback overheads caused by feeding back a precoding matrix can be reduced.

Abstract: Embodiments of the present invention provide a precoding vector indicating method, a precoding vector determining method, a receive end device, and a transmit end device. The precoding vector indicating method includes: determining a plurality of component vectors of an ideal precoding vector and a weight of each component vector based on at least one basic codebook, where each component vector is a column vector of one of the at least one basic codebook; and sending a precoding vector indicator, where the precoding vector indicator is used to indicate the plurality of component vectors and the weight of each component vector. The embodiments of the present invention further provide a precoding vector determining method, a receive end device, and a transmit end device. In the technical solutions provided in the embodiments of the present invention, a basic codebook is constructed based on a plurality of parameters, so that the basic codebook can be used to more accurately describe a channel environment.

Abstract: This application disclose a method for indicating and determining a precoding vector related to precoding technologies to increase an overall system performance gain. The method may include: generating indication information, and sending the indication information. The indication information is used to indicate a plurality of component vectors of a precoding vector and a combination coefficient of each component vector. The combination coefficient of the component vector includes at least one of the following types: a wideband amplitude coefficient, a narrowband amplitude coefficient, and a narrowband phase coefficient.

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2 an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

Abstract: The present invention discloses an inter-base station beam configuration and management method, a base station, user equipment, and a system. The method includes: receiving, by user equipment, a beam signal sent by a base station; determining, by the user equipment, a receive beam based on the sent beam signal; receiving, by the base station, a beam signal sent by a terminal device; determining, by the base station, a receive beam based on the sent beam signal; performing dynamic selection and fast beam switching between base stations in combination with a coordinated multi-point technology; and performing fast beam alignment between the base station end with the user equipment end. This application can effectively implement fast beam switching and alignment between base stations and support dynamic base station selection, thereby improving link reliability.

Abstract: The present invention belongs to the field of communications technologies, and discloses a channel state information CSI feedback method and an apparatus. The method includes: determining a codebook of at each transport layer CSI of user equipment UE, where the codebook of the CSI at each transport layer of the UE is: W=W1×W2 an element Xi in W2 is a weighting coefficient corresponding to each codeword in W1, and i is an integer greater than or equal to 1 and less than or equal to K; determining a quantity Ni of bits occupied by a quantized value of an ith element in W2, where quantized values of at least two elements in W2 occupy different quantities of bits; and feeding back the quantized value of the ith element to a network device based on Ni.

Abstract: This application disclose a method for indicating and determining a precoding vector related to precoding technologies to increase an overall system performance gain. The method may include: generating indication information, and sending the indication information. The indication information is used to indicate a plurality of component vectors of a precoding vector and a combination coefficient of each component vector. The combination coefficient of the component vector includes at least one of the following types: a wideband amplitude coefficient, a narrowband amplitude coefficient, and a narrowband phase coefficient.

Abstract: A radio access node (RAN) and method of operation of the RAN are provided. The RAN includes a massive multiple-input-multiple-output (MIMO) antenna array. The RAN includes a processing hardware configured to carry out a communication method that includes receiving a digital data stream for transmission on a time-frequency resource. The RAN precodes the digital data stream using a digital beamforming stage to render a precoded digital downlink data stream for downlink data stream signal transmission to a user equipment. The digital beamforming stage includes a first precoding stage configured according to a long-term matrix, and a second precoding stage configured according to a short-term matrix. The RAN is further configured to generate a downlink data stream transmission signal to the user equipment in accordance with the precoded digital downlink data stream.

Abstract: The present disclosure discloses a channel state information feedback method, a base station, a terminal device, and a system. The method includes: receiving, by a terminal device, a reference signal sent by a base station; determining, by the terminal device, channel state information based on the reference signal; and sending, by the terminal device, the channel state information to the base station, so that the base station determines a precoding matrix F. The precoding matrix F=C1C2W, where C1 is a first-level precoding matrix, C2 is a second-level precoding matrix, and W is a third-level precoding matrix. Channel state information corresponding to C1 includes beam information, channel state information corresponding to C2 includes long-term wideband channel information, and channel state information corresponding to W includes instantaneous channel information. This patent application can reduce total pilot and CSI feedback overheads, thereby improving a system throughput.

Abstract: The invention relates to transduction compounds, buffers and methods for introducing molecules into cells. The invention also relates to methods of treatment, pharmaceutical compositions and other uses of the transduction compounds and buffers. The invention also relates to modified cells obtainable by the transduction compounds, buffers and methods of the invention.

Abstract: Embodiments of the present invention provide a method for power control of a uplink control channel in a coordinated multi-point transmission system. The method comprises: performing the uplink control channel power control based on measured pathloss from a single reception point to the user equipment in a scenario of single-point reception of the uplink control channel; performing the uplink control channel power control by reducing uplink control channel transmission power of the user equipment to thereby reduce inter-cell interference incurred by multi-reception-point reception combining gain in a scenario of multi-point reception of the uplink control channel. Embodiments of the present invention further provide an apparatus for power control of a uplink control channel in a coordinated multi-point transmission system and a corresponding base station.

Abstract: The present invention proposes a method and device for controlling uplink power. A central processing unit firstly determines a path loss generation mode for a user equipment according to a predetermined rule and then transmits an instruction to the user equipment, the instruction including the determined path loss generation mode so that the user equipment determines uplink power of fee user equipment according to the path loss generation mode. A user equipment acquires an instruction from a central processing unit to indicate a path loss generation mode of the user equipment, then determines a path loss of the user equipment according to the path loss generation mode indicated by the central processing unit, and then acquires uplink transmission power of the user equipment according to the determined path loss of the user equipment.

Abstract: The present invention relates to a new protein molecule HAb18G/CD147 which is derived from hepatocellular carcinoma tissue and can be used as a drug target. The invention also relates to the antisense RNA directed to HAb18G/CD147 transcript, and antagonistic peptides for HAb18G/CD147.