Abstract: Embodiments disclose an uplink data transmission method and apparatus. The method includes: determining M transmission areas allocated to a terminal device, and generating first information used to indicate the M transmission areas, where M is a positive integer, and the transmission area represents an air interface time-frequency resource that includes a time range and a frequency range that are specified by a communications system. The method also includes determining, for each transmission area of the M transmission areas, second information used to indicate a transport block size. The method also includes sending an indication message to the terminal device, so that the terminal device transmits uplink data according to the indication message, where the indication message includes the first information and the second information.

Abstract: Embodiments of the present invention provide a data transmission method, apparatus, and device, so as to improve efficiency in utilizing a time-frequency resource. The method includes: determining, by a transmit end device, a signature matrix S according to a quantity L of layers of a data stream and a quantity R of receive antennas used by a receive end device; determining, by the transmit end device, a precoding matrix P according to a channel matrix H and the signature matrix S, and performing precoding processing on the L-layer data stream according to the precoding matrix P; and sending, by the transmit end device to the receive end device, the L-layer data stream on which the precoding processing has been performed and information used to indicate the signature matrix S.

Abstract: The present invention discloses an indication information transmission method and apparatus. The method includes: determining, in one or more codebooks, a first codebook used to send a first downlink data stream to a terminal device; determining one or more second codebooks used to send a second downlink data stream; determining codebook indication information used to indicate the first codebook and the one or more second codebooks; and sending the codebook indication information to the terminal device.

Abstract: The present disclosure discloses a data transmission method, a transmit end device, and a receive end device. The method includes performing bit mapping processing on a first part of bits of a first data bit group, to generate a first modulation symbol and determining a first precoding matrix from multiple preset precoding matrices according to a second part of bits of the first data bit group. The method also includes performing precoding processing on the first modulation symbol according to the first precoding matrix, to obtain a first modulation symbol matrix and transmitting the first modulation symbol matrix to a receive end device by using at least two antennas.

Abstract: Embodiments of the present invention disclose a precoding method and an apparatus for heterogeneous network coordinated multi-point transmission. The method includes: obtaining parameter information of the heterogeneous network coordinated multi-point transmission system; comparing a first channel space transmitting power with the maximum transmitting power of a macro base station, and comparing a second channel space transmitting power with the maximum transmitting power of a micro base station according to the parameter information to obtain a comparison result; determining an obtaining manner of a precoding vector according to the comparison result, and obtaining a first precoding vector according to the obtaining manner of the precoding vector; and configuring the macro base station and the micro base station according to the first precoding vector. The embodiments of the present invention are applicable to a heterogeneous network coordinated multi-point transmission environment.

Abstract: This application discloses a method for determining a pilot arrangement and a base station. The method includes the following steps. S1. Select a first optimized pilot arrangement P1 from an available subcarrier set G as a pilot arrangement of the first transmit antenna, and set G1=G?P1; S2. Perform a cyclic shift on the P1; if a Pi obtained after the shift is a subset of the G1, use the Pi as a pilot arrangement of the ith transmit antenna; or if a Pi obtained after the shift is not a subset of the G1, select a Pi from the G1 as a pilot arrangement of the ith transmit antenna; and set G1=G1?Pi and i=i+1, and repeatedly perform S2 until i is equal to a quantity of transmit antennas.

Abstract: Embodiments disclose a method and an apparatus for transmitting indication information. The method includes: determining, according to one or more codebooks, a first codebook to be used by a terminal device to send an uplink data stream; determining codebook indication information used to indicate the first codebook; and determining codebook indication information used to indicate the first codebook. For the method and the apparatus for transmitting indication information according to embodiments of the present invention, a network device determines, according to one or more codebooks, a first codebook to be used by a terminal device to send an uplink data stream, determines codebook indication information used to indicate the first codebook, and sends the codebook indication information to the terminal device, so that the terminal device can determine the first codebook assigned by the network device and transmit data by using the first codebook.

Abstract: A data processing method, including performing, by a transmit end device, mapping processing on L layers of information bits to generate L layers of modulation symbol sequences, where each layer of modulation symbol sequence includes U modulation symbols, the L layers of modulation symbol sequences correspond to a same time-frequency resource, and the U modulation symbols include at least one non-zero modulation symbol and at least one zero modulation symbol, performing precoding processing on each layer of modulation symbol sequence according to a precoding matrix to generate L layers of modulation symbol sequence matrixes, and performing superposition processing on the L layers of modulation symbol sequence matrixes to generate a to-be-sent symbol sequence matrix, where the to-be-sent symbol sequence matrix includes T element sequences in a first dimension, and the to-be-sent symbol sequence matrix includes U element sequences in a second dimension.

Abstract: Embodiments of the present invention provide a transmission status determining method, where the method includes: receiving, by a receive end device in a first time period, a first symbol sequence sent by a transmit end device; determining a first modulation parameter set according to the first symbol sequence; and determining, according to preset first mapping relationship information, a first transmission status corresponding to the first modulation parameter set as a transmission status of the transmit end device in a second time period, where the first mapping relationship information is used to indicate a one-to-one mapping relationship between N transmission statuses and N modulation parameter sets, the first modulation parameter set belongs to the N modulation parameter sets, and the second time period is later than the first time period.

Abstract: Embodiments of the present invention apply to the technical field of communications, and disclosed are a network switching method, system, and network side device. In the embodiment of the invention, within coverage of network side devices on one signaling plane, when a current network side device bearing data plane information of a terminal device determines that handover from the current network side device to a target network side device is required, the current network side device performs handover confirmation with the target network side device, so that the target network side device enables a data plane information communication function with the terminal device and completes switching the bearer of the data plane information.

Abstract: A data transmission method and a related device are disclosed. The data transmission method includes: obtaining to-be-transmitted K bits; mapping the K bits to F resource units according to a codebook and a value of the K bits, so as to obtain a codeword CK that is to be transmitted by using the F resource units, where the codebook includes S codewords in a one-to-one mapping relationship with S different values of the K bits; and sending the codeword CK by using the F resource units.

Abstract: Embodiments of the present invention provide a data communication method and a related device. The data communication method may include performing, by a first communications device, power adjustment on Q codebooks using Q power factors, to obtain power-adjusted Q codebooks, where Q is a positive integer, and the Q power factors and the Q codebooks are in a one-to-one correspondence and mapping, by the first communications device, Q to-be-transmitted bit sequences to Q codewords in the power-adjusted Q codebooks, where the Q bit sequences and the Q codewords are in a one-to-one correspondence. The method also includes obtaining, by the first communications device, a modulation symbol based on the Q codewords and sending, by the first communications device, the modulation symbol on a resource block.

Abstract: The present invention discloses a solution including: receiving channel quality fed back by at least two user terminals; determining, according to the received channel quality fed back by the at least two user terminals, a user terminal that needs to be served by each transmit antenna of a base station device; for user terminals served by a same transmit antenna, configuring, according to channel quality fed back by the user terminals served by the same transmit antenna, a constellation expansion modulation scheme for each user terminal served by the same transmit antenna, and determining an intra-stream power allocation factor and an initial phase rotation coefficient of the transmit antenna; and processing, by using the modulation scheme, a signal to be sent to the user terminal, and transmitting the processed signal to the user terminal according to the intra-stream power allocation factor and the initial phase rotation coefficient.

Abstract: Embodiments of the present disclosure provide a communications method, device, and terminal. The method includes: determining that a micro network cooperated with a macro network is in a channel tailor mode, wherein some common physical channels except a pilot channel of the micro network are in a disabled state so that the micro network is disabled from supporting initial access of a terminal; monitoring whether a terminal on a macro network has a service requirement on the micro network; and sending a network handover instruction that comprises configuration information of the micro network to the terminal if the terminal has a service requirement on the micro network, wherein the network handover instruction is used to instruct the terminal to hand over from the macro network to the micro network.

Abstract: The embodiments of the present invention provide a method and device for activating a capacity station by using wave beams. In some feasible embodiments of the present invention, by setting a set of wave beams to be transmitted for a capacity station in a dormant state, and by transmitting the wave beams in the set of wave beams to be transmitted, load information is collected. According to the covering relation of the capacity station in a dormant state and the set of wave beams to be transmitted and the load information, the capacity station needing to be activated is determined and activated.

Abstract: Embodiments of the present invention apply to the technical field of communications, and disclosed are a network switching method, system, and network side device. In the embodiment of the invention, within coverage of network side devices on one signaling plane, when a current network side device bearing data plane information of a terminal device determines that handover from the current network side device to a target network side device is required, the current network side device performs handover confirmation with the target network side device, so that the target network side device enables a data plane information communication function with the terminal device and completes switching the bearer of the data plane information.

Abstract: An energy saving method, system and device for a base station, applied in the technical field of communications. The energy saving method comprises: if the number of user equipments sending a service request in the coverage of a coverage base station is greater than a first threshold, sending a second activation request to a capacity boosting base station, wherein the second activation request is used for requesting the capacity boosting base station in a dormant state to enter an intermediate state from the dormant state, and the intermediate state refers to that in the intermediate state, the capacity boosting base station bears a user equipment in a connected state rather than a user equipment in an idle state; and after the capacity boosting base station enters the intermediate state, transferring the user equipment to be connected to the capacity boosting base station in the intermediate state.

Abstract: Embodiments of the present invention provide a decoding method and apparatus. The method includes: receiving K user signals by using N subcarriers, where one user signal is carried on at least two subcarriers of the N subcarriers, one subcarrier carries at least two user signals of the K user signals, and 2?N<K; determining, from the N subcarriers, at least two target subcarriers that carry a target user signal, and performing initialization calculation on the target subcarriers, to obtain initialization calculation results; and determining, in a logarithm domain, a probability of each codeword in a codebook of the target user signal according to the initialization calculation results, to decode the target user signal. According to this method, decoding can be performed in the logarithm domain with low complexity.

Abstract: The present invention provides a method for transmitting a downlink signal, a method for receiving a downlink signal, a network system and a terminal. The method includes: transmitting, by a control base station, a first group of downlink signal to a terminal; and transmitting, by a data base station, a second group of downlink signal to the terminal, the first group of downlink signal is at least partially different from the second group of downlink signal. The first group of downlink signal and the second group of downlink signal enable the terminal to implement a network function according to the first group of downlink signal and/or the second group of downlink signal. Embodiments of the present invention can improve network energy efficiency.

Abstract: Embodiments of the present invention provide a communications method, device, and system. The method includes: monitoring whether a terminal on a macro network has a service requirement on a micro network, where the micro network is in the coverage area of the macro network, and all common physical channels or some common physical channels except a pilot channel on the micro network are in a disabled state; and if the terminal has a service requirement on the micro network, sending a network handover instruction that includes configuration information of the micro network to the terminal, where the network handover instruction is used to instruct the terminal to hand over from the macro network to the micro network. In the embodiments of the present invention, power consumption of a capacity station is reduced, and unnecessary power waste is reduced.