Huawei Technologies Co., Limited

Shunqing Zhang

Yan Chen

Xiuqiang Xu

Yiqun Wu

Wei Zhang

Shugong Xu

Yalin Liu

Haicun Hang

Zhikun Xu

Xun Yang

Lei Zhang

Tingting Geng

Ye Wu

Lei Lu

Lu Rong

Gaoning He

Gong Zhang

Hao Yu

Yungang Li

Chenhao Qi

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.

Uplink data transmission method and apparatus

The present application provides a method for a terminal device to transmit uplink service data to a base station. The terminal device obtains uplink service data from a user input in a service session. The terminal device obtains a codebook from a preset codebook set of the terminal and a pilot sequence corresponding to the codebook. The terminal device generates an uplink data signal according to the codebook and the uplink service data, and generates a pilot signal corresponding to the pilot sequence. The terminal device transmits the uplink data signal and the pilot signal to the base station.

Uplink access method, apparatus, and system

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.

Apparatus for transmitting indication information indicating a codebook

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.

Transmission of one or more codebooks between network and terminal devices

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.

Information transmission method, apparatus, and device

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.

Network switching method, system, and network side device

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.

Data communication method, related device, and communications system

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.

Data transmission method and device

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 Cthat 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 Cby using the F resource units.

Data transmission method and related device

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&#x2264;N&#x3c;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.

Decoding method and apparatus

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.

Data transmission method, apparatus, and device

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.

Data transmission method, transmit end device, and receive end device

The present disclosure relates to the field of mobile communications technologies, and discloses a method for configuring a resource to a DRB, and an apparatus. The method is specifically: first determining, by a first CBS, resource configuration information used by a first DBS to separately allocate a resource to at least one DRB of UE; and then, sending, to the first DBS, a first resource allocation indication that carries the determined resource configuration information, so that the first DBS separately allocates the resource to the at least one DRB of the UE according to the resource configuration information. In this way, effectively implementing resource configuration for a protocol entity in a DBS according to a QoS requirement of a DRB.

Method for configuring resource to data radio bearer DRB, and apparatus

Embodiments of this application disclose a pilot signal sending and receiving method and apparatus, wherein the pilot signal sending method includes: establishing a first correspondence between a carrier identifier and a pilot pattern of a first type of pilot signal; establishing a second correspondence between a carrier identifier and a resource block set; acquiring a target carrier identifier of a target carrier; determining a location of a target resource block set corresponding to the target carrier identifier; determining a target pilot pattern that is of a first type of pilot signal and that corresponds to the target carrier identifier; mapping, according to the target pilot pattern, the first type of pilot signal to each resource block in the target resource block set on the target carrier. In this method, mapping is performed on a pilot signal only in a resource block set, which may reduce pilot redundancy and overheads.

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Shenzhen, China

Shunqing Zhang